add slickgrid assets

common/static/css/vendor/slickgrid/slick.grid.css

@@ -0,0 +1,157 @@
+/*
+IMPORTANT:
+In order to preserve the uniform grid appearance, all cell styles need to have padding, margin and border sizes.
+No built-in (selected, editable, highlight, flashing, invalid, loading, :focus) or user-specified CSS
+classes should alter those!
+*/
+
+.slick-header.ui-state-default, .slick-headerrow.ui-state-default {
+  width: 100%;
+  overflow: hidden;
+  border-left: 0px;
+}
+
+.slick-header-columns, .slick-headerrow-columns {
+  position: relative;
+  white-space: nowrap;
+  cursor: default;
+  overflow: hidden;
+}
+
+.slick-header-column.ui-state-default {
+  position: relative;
+  display: inline-block;
+  overflow: hidden;
+  -o-text-overflow: ellipsis;
+  text-overflow: ellipsis;
+  height: 16px;
+  line-height: 16px;
+  margin: 0;
+  padding: 4px;
+  border-right: 1px solid silver;
+  border-left: 0px;
+  border-top: 0px;
+  border-bottom: 0px;
+  float: left;
+}
+
+.slick-headerrow-column.ui-state-default {
+  padding: 4px;
+}
+
+.slick-header-column-sorted {
+  font-style: italic;
+}
+
+.slick-sort-indicator {
+  display: inline-block;
+  width: 8px;
+  height: 5px;
+  margin-left: 4px;
+  margin-top: 6px;
+  float: left;
+}
+
+.slick-sort-indicator-desc {
+  background: url(images/sort-desc.gif);
+}
+
+.slick-sort-indicator-asc {
+  background: url(images/sort-asc.gif);
+}
+
+.slick-resizable-handle {
+  position: absolute;
+  font-size: 0.1px;
+  display: block;
+  cursor: col-resize;
+  width: 4px;
+  right: 0px;
+  top: 0;
+  height: 100%;
+}
+
+.slick-sortable-placeholder {
+  background: silver;
+}
+
+.grid-canvas {
+  position: relative;
+  outline: 0;
+}
+
+.slick-row.ui-widget-content, .slick-row.ui-state-active {
+  position: absolute;
+  border: 0px;
+  width: 100%;
+}
+
+.slick-cell, .slick-headerrow-column {
+  position: absolute;
+  border: 1px solid transparent;
+  border-right: 1px dotted silver;
+  border-bottom-color: silver;
+  overflow: hidden;
+  -o-text-overflow: ellipsis;
+  text-overflow: ellipsis;
+  vertical-align: middle;
+  z-index: 1;
+  padding: 1px 2px 2px 1px;
+  margin: 0;
+  white-space: nowrap;
+  cursor: default;
+}
+
+.slick-group {
+}
+
+.slick-group-toggle {
+  display: inline-block;
+}
+
+.slick-cell.highlighted {
+  background: lightskyblue;
+  background: rgba(0, 0, 255, 0.2);
+  -webkit-transition: all 0.5s;
+  -moz-transition: all 0.5s;
+  -o-transition: all 0.5s;
+  transition: all 0.5s;
+}
+
+.slick-cell.flashing {
+  border: 1px solid red !important;
+}
+
+.slick-cell.editable {
+  z-index: 11;
+  overflow: visible;
+  background: white;
+  border-color: black;
+  border-style: solid;
+}
+
+.slick-cell:focus {
+  outline: none;
+}
+
+.slick-reorder-proxy {
+  display: inline-block;
+  background: blue;
+  opacity: 0.15;
+  filter: alpha(opacity = 15);
+  cursor: move;
+}
+
+.slick-reorder-guide {
+  display: inline-block;
+  height: 2px;
+  background: blue;
+  opacity: 0.7;
+  filter: alpha(opacity = 70);
+}
+
+.slick-selection {
+  z-index: 10;
+  position: absolute;
+  border: 2px dashed black;
+}

common/static/css/vendor/slickgrid/smoothness/jquery-ui-1.8.16.custom.css

@@ -0,0 +1,409 @@
+/*
+ * jQuery UI CSS Framework 1.8.16
+ *
+ * Copyright 2011, AUTHORS.txt (http://jqueryui.com/about)
+ * Dual licensed under the MIT or GPL Version 2 licenses.
+ * http://jquery.org/license
+ *
+ * http://docs.jquery.com/UI/Theming/API
+ */
+
+/* Layout helpers
+----------------------------------*/
+.ui-helper-hidden { display: none; }
+.ui-helper-hidden-accessible { position: absolute !important; clip: rect(1px 1px 1px 1px); clip: rect(1px,1px,1px,1px); }
+.ui-helper-reset { margin: 0; padding: 0; border: 0; outline: 0; line-height: 1.3; text-decoration: none; font-size: 100%; list-style: none; }
+.ui-helper-clearfix:after { content: "."; display: block; height: 0; clear: both; visibility: hidden; }
+.ui-helper-clearfix { display: inline-block; }
+/* required comment for clearfix to work in Opera \*/
+* html .ui-helper-clearfix { height:1%; }
+.ui-helper-clearfix { display:block; }
+/* end clearfix */
+.ui-helper-zfix { width: 100%; height: 100%; top: 0; left: 0; position: absolute; opacity: 0; filter:Alpha(Opacity=0); }
+
+
+/* Interaction Cues
+----------------------------------*/
+.ui-state-disabled { cursor: default !important; }
+
+
+/* Icons
+----------------------------------*/
+
+/* states and images */
+.ui-icon { display: block; text-indent: -99999px; overflow: hidden; background-repeat: no-repeat; }
+
+
+/* Misc visuals
+----------------------------------*/
+
+/* Overlays */
+.ui-widget-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }
+
+
+/*
+ * jQuery UI CSS Framework 1.8.16
+ *
+ * Copyright 2011, AUTHORS.txt (http://jqueryui.com/about)
+ * Dual licensed under the MIT or GPL Version 2 licenses.
+ * http://jquery.org/license
+ *
+ * http://docs.jquery.com/UI/Theming/API
+ *
+ * To view and modify this theme, visit http://jqueryui.com/themeroller/?ffDefault=Verdana,Arial,sans-serif&fwDefault=normal&fsDefault=1.1em&cornerRadius=4px&bgColorHeader=cccccc&bgTextureHeader=03_highlight_soft.png&bgImgOpacityHeader=75&borderColorHeader=aaaaaa&fcHeader=222222&iconColorHeader=222222&bgColorContent=ffffff&bgTextureContent=01_flat.png&bgImgOpacityContent=75&borderColorContent=aaaaaa&fcContent=222222&iconColorContent=222222&bgColorDefault=e6e6e6&bgTextureDefault=02_glass.png&bgImgOpacityDefault=75&borderColorDefault=d3d3d3&fcDefault=555555&iconColorDefault=888888&bgColorHover=dadada&bgTextureHover=02_glass.png&bgImgOpacityHover=75&borderColorHover=999999&fcHover=212121&iconColorHover=454545&bgColorActive=ffffff&bgTextureActive=02_glass.png&bgImgOpacityActive=65&borderColorActive=aaaaaa&fcActive=212121&iconColorActive=454545&bgColorHighlight=fbf9ee&bgTextureHighlight=02_glass.png&bgImgOpacityHighlight=55&borderColorHighlight=fcefa1&fcHighlight=363636&iconColorHighlight=2e83ff&bgColorError=fef1ec&bgTextureError=02_glass.png&bgImgOpacityError=95&borderColorError=cd0a0a&fcError=cd0a0a&iconColorError=cd0a0a&bgColorOverlay=aaaaaa&bgTextureOverlay=01_flat.png&bgImgOpacityOverlay=0&opacityOverlay=30&bgColorShadow=aaaaaa&bgTextureShadow=01_flat.png&bgImgOpacityShadow=0&opacityShadow=30&thicknessShadow=8px&offsetTopShadow=-8px&offsetLeftShadow=-8px&cornerRadiusShadow=8px
+ */
+
+
+/* Component containers
+----------------------------------*/
+.ui-widget { font-family: Verdana,Arial,sans-serif; font-size: 1.1em; }
+.ui-widget .ui-widget { font-size: 1em; }
+.ui-widget input, .ui-widget select, .ui-widget textarea, .ui-widget button { font-family: Verdana,Arial,sans-serif; font-size: 1em; }
+.ui-widget-content { border: 1px solid #aaaaaa; background: #ffffff url(images/ui-bg_flat_75_ffffff_40x100.png) 50% 50% repeat-x; color: #222222; }
+.ui-widget-content a { color: #222222; }
+.ui-widget-header { border: 1px solid #aaaaaa; background: #cccccc url(images/ui-bg_highlight-soft_75_cccccc_1x100.png) 50% 50% repeat-x; color: #222222; font-weight: bold; }
+.ui-widget-header a { color: #222222; }
+
+/* Interaction states
+----------------------------------*/
+.ui-state-default, .ui-widget-content .ui-state-default, .ui-widget-header .ui-state-default { border: 1px solid #d3d3d3; background: #e6e6e6 url(images/ui-bg_glass_75_e6e6e6_1x400.png) 50% 50% repeat-x; font-weight: normal; color: #555555; }
+.ui-state-default a, .ui-state-default a:link, .ui-state-default a:visited { color: #555555; text-decoration: none; }
+.ui-state-hover, .ui-widget-content .ui-state-hover, .ui-widget-header .ui-state-hover, .ui-state-focus, .ui-widget-content .ui-state-focus, .ui-widget-header .ui-state-focus { border: 1px solid #999999; background: #dadada url(images/ui-bg_glass_75_dadada_1x400.png) 50% 50% repeat-x; font-weight: normal; color: #212121; }
+.ui-state-hover a, .ui-state-hover a:hover { color: #212121; text-decoration: none; }
+.ui-state-active, .ui-widget-content .ui-state-active, .ui-widget-header .ui-state-active { border: 1px solid #aaaaaa; background: #ffffff url(images/ui-bg_glass_65_ffffff_1x400.png) 50% 50% repeat-x; font-weight: normal; color: #212121; }
+.ui-state-active a, .ui-state-active a:link, .ui-state-active a:visited { color: #212121; text-decoration: none; }
+.ui-widget :active { outline: none; }
+
+/* Interaction Cues
+----------------------------------*/
+.ui-state-highlight, .ui-widget-content .ui-state-highlight, .ui-widget-header .ui-state-highlight  {border: 1px solid #fcefa1; background: #fbf9ee url(images/ui-bg_glass_55_fbf9ee_1x400.png) 50% 50% repeat-x; color: #363636; }
+.ui-state-highlight a, .ui-widget-content .ui-state-highlight a,.ui-widget-header .ui-state-highlight a { color: #363636; }
+.ui-state-error, .ui-widget-content .ui-state-error, .ui-widget-header .ui-state-error {border: 1px solid #cd0a0a; background: #fef1ec url(images/ui-bg_glass_95_fef1ec_1x400.png) 50% 50% repeat-x; color: #cd0a0a; }
+.ui-state-error a, .ui-widget-content .ui-state-error a, .ui-widget-header .ui-state-error a { color: #cd0a0a; }
+.ui-state-error-text, .ui-widget-content .ui-state-error-text, .ui-widget-header .ui-state-error-text { color: #cd0a0a; }
+.ui-priority-primary, .ui-widget-content .ui-priority-primary, .ui-widget-header .ui-priority-primary { font-weight: bold; }
+.ui-priority-secondary, .ui-widget-content .ui-priority-secondary,  .ui-widget-header .ui-priority-secondary { opacity: .7; filter:Alpha(Opacity=70); font-weight: normal; }
+.ui-state-disabled, .ui-widget-content .ui-state-disabled, .ui-widget-header .ui-state-disabled { opacity: .35; filter:Alpha(Opacity=35); background-image: none; }
+
+/* Icons
+----------------------------------*/
+
+/* states and images */
+.ui-icon { width: 16px; height: 16px; background-image: url(images/ui-icons_222222_256x240.png); }
+.ui-widget-content .ui-icon {background-image: url(images/ui-icons_222222_256x240.png); }
+.ui-widget-header .ui-icon {background-image: url(images/ui-icons_222222_256x240.png); }
+.ui-state-default .ui-icon { background-image: url(images/ui-icons_888888_256x240.png); }
+.ui-state-hover .ui-icon, .ui-state-focus .ui-icon {background-image: url(images/ui-icons_454545_256x240.png); }
+.ui-state-active .ui-icon {background-image: url(images/ui-icons_454545_256x240.png); }
+.ui-state-highlight .ui-icon {background-image: url(images/ui-icons_2e83ff_256x240.png); }
+.ui-state-error .ui-icon, .ui-state-error-text .ui-icon {background-image: url(images/ui-icons_cd0a0a_256x240.png); }
+
+/* positioning */
+.ui-icon-carat-1-n { background-position: 0 0; }
+.ui-icon-carat-1-ne { background-position: -16px 0; }
+.ui-icon-carat-1-e { background-position: -32px 0; }
+.ui-icon-carat-1-se { background-position: -48px 0; }
+.ui-icon-carat-1-s { background-position: -64px 0; }
+.ui-icon-carat-1-sw { background-position: -80px 0; }
+.ui-icon-carat-1-w { background-position: -96px 0; }
+.ui-icon-carat-1-nw { background-position: -112px 0; }
+.ui-icon-carat-2-n-s { background-position: -128px 0; }
+.ui-icon-carat-2-e-w { background-position: -144px 0; }
+.ui-icon-triangle-1-n { background-position: 0 -16px; }
+.ui-icon-triangle-1-ne { background-position: -16px -16px; }
+.ui-icon-triangle-1-e { background-position: -32px -16px; }
+.ui-icon-triangle-1-se { background-position: -48px -16px; }
+.ui-icon-triangle-1-s { background-position: -64px -16px; }
+.ui-icon-triangle-1-sw { background-position: -80px -16px; }
+.ui-icon-triangle-1-w { background-position: -96px -16px; }
+.ui-icon-triangle-1-nw { background-position: -112px -16px; }
+.ui-icon-triangle-2-n-s { background-position: -128px -16px; }
+.ui-icon-triangle-2-e-w { background-position: -144px -16px; }
+.ui-icon-arrow-1-n { background-position: 0 -32px; }
+.ui-icon-arrow-1-ne { background-position: -16px -32px; }
+.ui-icon-arrow-1-e { background-position: -32px -32px; }
+.ui-icon-arrow-1-se { background-position: -48px -32px; }
+.ui-icon-arrow-1-s { background-position: -64px -32px; }
+.ui-icon-arrow-1-sw { background-position: -80px -32px; }
+.ui-icon-arrow-1-w { background-position: -96px -32px; }
+.ui-icon-arrow-1-nw { background-position: -112px -32px; }
+.ui-icon-arrow-2-n-s { background-position: -128px -32px; }
+.ui-icon-arrow-2-ne-sw { background-position: -144px -32px; }
+.ui-icon-arrow-2-e-w { background-position: -160px -32px; }
+.ui-icon-arrow-2-se-nw { background-position: -176px -32px; }
+.ui-icon-arrowstop-1-n { background-position: -192px -32px; }
+.ui-icon-arrowstop-1-e { background-position: -208px -32px; }
+.ui-icon-arrowstop-1-s { background-position: -224px -32px; }
+.ui-icon-arrowstop-1-w { background-position: -240px -32px; }
+.ui-icon-arrowthick-1-n { background-position: 0 -48px; }
+.ui-icon-arrowthick-1-ne { background-position: -16px -48px; }
+.ui-icon-arrowthick-1-e { background-position: -32px -48px; }
+.ui-icon-arrowthick-1-se { background-position: -48px -48px; }
+.ui-icon-arrowthick-1-s { background-position: -64px -48px; }
+.ui-icon-arrowthick-1-sw { background-position: -80px -48px; }
+.ui-icon-arrowthick-1-w { background-position: -96px -48px; }
+.ui-icon-arrowthick-1-nw { background-position: -112px -48px; }
+.ui-icon-arrowthick-2-n-s { background-position: -128px -48px; }
+.ui-icon-arrowthick-2-ne-sw { background-position: -144px -48px; }
+.ui-icon-arrowthick-2-e-w { background-position: -160px -48px; }
+.ui-icon-arrowthick-2-se-nw { background-position: -176px -48px; }
+.ui-icon-arrowthickstop-1-n { background-position: -192px -48px; }
+.ui-icon-arrowthickstop-1-e { background-position: -208px -48px; }
+.ui-icon-arrowthickstop-1-s { background-position: -224px -48px; }
+.ui-icon-arrowthickstop-1-w { background-position: -240px -48px; }
+.ui-icon-arrowreturnthick-1-w { background-position: 0 -64px; }
+.ui-icon-arrowreturnthick-1-n { background-position: -16px -64px; }
+.ui-icon-arrowreturnthick-1-e { background-position: -32px -64px; }
+.ui-icon-arrowreturnthick-1-s { background-position: -48px -64px; }
+.ui-icon-arrowreturn-1-w { background-position: -64px -64px; }
+.ui-icon-arrowreturn-1-n { background-position: -80px -64px; }
+.ui-icon-arrowreturn-1-e { background-position: -96px -64px; }
+.ui-icon-arrowreturn-1-s { background-position: -112px -64px; }
+.ui-icon-arrowrefresh-1-w { background-position: -128px -64px; }
+.ui-icon-arrowrefresh-1-n { background-position: -144px -64px; }
+.ui-icon-arrowrefresh-1-e { background-position: -160px -64px; }
+.ui-icon-arrowrefresh-1-s { background-position: -176px -64px; }
+.ui-icon-arrow-4 { background-position: 0 -80px; }
+.ui-icon-arrow-4-diag { background-position: -16px -80px; }
+.ui-icon-extlink { background-position: -32px -80px; }
+.ui-icon-newwin { background-position: -48px -80px; }
+.ui-icon-refresh { background-position: -64px -80px; }
+.ui-icon-shuffle { background-position: -80px -80px; }
+.ui-icon-transfer-e-w { background-position: -96px -80px; }
+.ui-icon-transferthick-e-w { background-position: -112px -80px; }
+.ui-icon-folder-collapsed { background-position: 0 -96px; }
+.ui-icon-folder-open { background-position: -16px -96px; }
+.ui-icon-document { background-position: -32px -96px; }
+.ui-icon-document-b { background-position: -48px -96px; }
+.ui-icon-note { background-position: -64px -96px; }
+.ui-icon-mail-closed { background-position: -80px -96px; }
+.ui-icon-mail-open { background-position: -96px -96px; }
+.ui-icon-suitcase { background-position: -112px -96px; }
+.ui-icon-comment { background-position: -128px -96px; }
+.ui-icon-person { background-position: -144px -96px; }
+.ui-icon-print { background-position: -160px -96px; }
+.ui-icon-trash { background-position: -176px -96px; }
+.ui-icon-locked { background-position: -192px -96px; }
+.ui-icon-unlocked { background-position: -208px -96px; }
+.ui-icon-bookmark { background-position: -224px -96px; }
+.ui-icon-tag { background-position: -240px -96px; }
+.ui-icon-home { background-position: 0 -112px; }
+.ui-icon-flag { background-position: -16px -112px; }
+.ui-icon-calendar { background-position: -32px -112px; }
+.ui-icon-cart { background-position: -48px -112px; }
+.ui-icon-pencil { background-position: -64px -112px; }
+.ui-icon-clock { background-position: -80px -112px; }
+.ui-icon-disk { background-position: -96px -112px; }
+.ui-icon-calculator { background-position: -112px -112px; }
+.ui-icon-zoomin { background-position: -128px -112px; }
+.ui-icon-zoomout { background-position: -144px -112px; }
+.ui-icon-search { background-position: -160px -112px; }
+.ui-icon-wrench { background-position: -176px -112px; }
+.ui-icon-gear { background-position: -192px -112px; }
+.ui-icon-heart { background-position: -208px -112px; }
+.ui-icon-star { background-position: -224px -112px; }
+.ui-icon-link { background-position: -240px -112px; }
+.ui-icon-cancel { background-position: 0 -128px; }
+.ui-icon-plus { background-position: -16px -128px; }
+.ui-icon-plusthick { background-position: -32px -128px; }
+.ui-icon-minus { background-position: -48px -128px; }
+.ui-icon-minusthick { background-position: -64px -128px; }
+.ui-icon-close { background-position: -80px -128px; }
+.ui-icon-closethick { background-position: -96px -128px; }
+.ui-icon-key { background-position: -112px -128px; }
+.ui-icon-lightbulb { background-position: -128px -128px; }
+.ui-icon-scissors { background-position: -144px -128px; }
+.ui-icon-clipboard { background-position: -160px -128px; }
+.ui-icon-copy { background-position: -176px -128px; }
+.ui-icon-contact { background-position: -192px -128px; }
+.ui-icon-image { background-position: -208px -128px; }
+.ui-icon-video { background-position: -224px -128px; }
+.ui-icon-script { background-position: -240px -128px; }
+.ui-icon-alert { background-position: 0 -144px; }
+.ui-icon-info { background-position: -16px -144px; }
+.ui-icon-notice { background-position: -32px -144px; }
+.ui-icon-help { background-position: -48px -144px; }
+.ui-icon-check { background-position: -64px -144px; }
+.ui-icon-bullet { background-position: -80px -144px; }
+.ui-icon-radio-off { background-position: -96px -144px; }
+.ui-icon-radio-on { background-position: -112px -144px; }
+.ui-icon-pin-w { background-position: -128px -144px; }
+.ui-icon-pin-s { background-position: -144px -144px; }
+.ui-icon-play { background-position: 0 -160px; }
+.ui-icon-pause { background-position: -16px -160px; }
+.ui-icon-seek-next { background-position: -32px -160px; }
+.ui-icon-seek-prev { background-position: -48px -160px; }
+.ui-icon-seek-end { background-position: -64px -160px; }
+.ui-icon-seek-start { background-position: -80px -160px; }
+/* ui-icon-seek-first is deprecated, use ui-icon-seek-start instead */
+.ui-icon-seek-first { background-position: -80px -160px; }
+.ui-icon-stop { background-position: -96px -160px; }
+.ui-icon-eject { background-position: -112px -160px; }
+.ui-icon-volume-off { background-position: -128px -160px; }
+.ui-icon-volume-on { background-position: -144px -160px; }
+.ui-icon-power { background-position: 0 -176px; }
+.ui-icon-signal-diag { background-position: -16px -176px; }
+.ui-icon-signal { background-position: -32px -176px; }
+.ui-icon-battery-0 { background-position: -48px -176px; }
+.ui-icon-battery-1 { background-position: -64px -176px; }
+.ui-icon-battery-2 { background-position: -80px -176px; }
+.ui-icon-battery-3 { background-position: -96px -176px; }
+.ui-icon-circle-plus { background-position: 0 -192px; }
+.ui-icon-circle-minus { background-position: -16px -192px; }
+.ui-icon-circle-close { background-position: -32px -192px; }
+.ui-icon-circle-triangle-e { background-position: -48px -192px; }
+.ui-icon-circle-triangle-s { background-position: -64px -192px; }
+.ui-icon-circle-triangle-w { background-position: -80px -192px; }
+.ui-icon-circle-triangle-n { background-position: -96px -192px; }
+.ui-icon-circle-arrow-e { background-position: -112px -192px; }
+.ui-icon-circle-arrow-s { background-position: -128px -192px; }
+.ui-icon-circle-arrow-w { background-position: -144px -192px; }
+.ui-icon-circle-arrow-n { background-position: -160px -192px; }
+.ui-icon-circle-zoomin { background-position: -176px -192px; }
+.ui-icon-circle-zoomout { background-position: -192px -192px; }
+.ui-icon-circle-check { background-position: -208px -192px; }
+.ui-icon-circlesmall-plus { background-position: 0 -208px; }
+.ui-icon-circlesmall-minus { background-position: -16px -208px; }
+.ui-icon-circlesmall-close { background-position: -32px -208px; }
+.ui-icon-squaresmall-plus { background-position: -48px -208px; }
+.ui-icon-squaresmall-minus { background-position: -64px -208px; }
+.ui-icon-squaresmall-close { background-position: -80px -208px; }
+.ui-icon-grip-dotted-vertical { background-position: 0 -224px; }
+.ui-icon-grip-dotted-horizontal { background-position: -16px -224px; }
+.ui-icon-grip-solid-vertical { background-position: -32px -224px; }
+.ui-icon-grip-solid-horizontal { background-position: -48px -224px; }
+.ui-icon-gripsmall-diagonal-se { background-position: -64px -224px; }
+.ui-icon-grip-diagonal-se { background-position: -80px -224px; }
+
+
+/* Misc visuals
+----------------------------------*/
+
+/* Corner radius */
+.ui-corner-all, .ui-corner-top, .ui-corner-left, .ui-corner-tl { -moz-border-radius-topleft: 4px; -webkit-border-top-left-radius: 4px; -khtml-border-top-left-radius: 4px; border-top-left-radius: 4px; }
+.ui-corner-all, .ui-corner-top, .ui-corner-right, .ui-corner-tr { -moz-border-radius-topright: 4px; -webkit-border-top-right-radius: 4px; -khtml-border-top-right-radius: 4px; border-top-right-radius: 4px; }
+.ui-corner-all, .ui-corner-bottom, .ui-corner-left, .ui-corner-bl { -moz-border-radius-bottomleft: 4px; -webkit-border-bottom-left-radius: 4px; -khtml-border-bottom-left-radius: 4px; border-bottom-left-radius: 4px; }
+.ui-corner-all, .ui-corner-bottom, .ui-corner-right, .ui-corner-br { -moz-border-radius-bottomright: 4px; -webkit-border-bottom-right-radius: 4px; -khtml-border-bottom-right-radius: 4px; border-bottom-right-radius: 4px; }
+
+/* Overlays */
+.ui-widget-overlay { background: #aaaaaa url(images/ui-bg_flat_0_aaaaaa_40x100.png) 50% 50% repeat-x; opacity: .30;filter:Alpha(Opacity=30); }
+.ui-widget-shadow { margin: -8px 0 0 -8px; padding: 8px; background: #aaaaaa url(images/ui-bg_flat_0_aaaaaa_40x100.png) 50% 50% repeat-x; opacity: .30;filter:Alpha(Opacity=30); -moz-border-radius: 8px; -khtml-border-radius: 8px; -webkit-border-radius: 8px; border-radius: 8px; }/*
+ * jQuery UI Resizable 1.8.16
+ *
+ * Copyright 2011, AUTHORS.txt (http://jqueryui.com/about)
+ * Dual licensed under the MIT or GPL Version 2 licenses.
+ * http://jquery.org/license
+ *
+ * http://docs.jquery.com/UI/Resizable#theming
+ */
+.ui-resizable { position: relative;}
+.ui-resizable-handle { position: absolute;font-size: 0.1px;z-index: 99999; display: block; }
+.ui-resizable-disabled .ui-resizable-handle, .ui-resizable-autohide .ui-resizable-handle { display: none; }
+.ui-resizable-n { cursor: n-resize; height: 7px; width: 100%; top: -5px; left: 0; }
+.ui-resizable-s { cursor: s-resize; height: 7px; width: 100%; bottom: -5px; left: 0; }
+.ui-resizable-e { cursor: e-resize; width: 7px; right: -5px; top: 0; height: 100%; }
+.ui-resizable-w { cursor: w-resize; width: 7px; left: -5px; top: 0; height: 100%; }
+.ui-resizable-se { cursor: se-resize; width: 12px; height: 12px; right: 1px; bottom: 1px; }
+.ui-resizable-sw { cursor: sw-resize; width: 9px; height: 9px; left: -5px; bottom: -5px; }
+.ui-resizable-nw { cursor: nw-resize; width: 9px; height: 9px; left: -5px; top: -5px; }
+.ui-resizable-ne { cursor: ne-resize; width: 9px; height: 9px; right: -5px; top: -5px;}/*
+ * jQuery UI Selectable 1.8.16
+ *
+ * Copyright 2011, AUTHORS.txt (http://jqueryui.com/about)
+ * Dual licensed under the MIT or GPL Version 2 licenses.
+ * http://jquery.org/license
+ *
+ * http://docs.jquery.com/UI/Selectable#theming
+ */
+.ui-selectable-helper { position: absolute; z-index: 100; border:1px dotted black; }
+/*
+ * jQuery UI Slider 1.8.16
+ *
+ * Copyright 2011, AUTHORS.txt (http://jqueryui.com/about)
+ * Dual licensed under the MIT or GPL Version 2 licenses.
+ * http://jquery.org/license
+ *
+ * http://docs.jquery.com/UI/Slider#theming
+ */
+.ui-slider { position: relative; text-align: left; }
+.ui-slider .ui-slider-handle { position: absolute; z-index: 2; width: 1.2em; height: 1.2em; cursor: default; }
+.ui-slider .ui-slider-range { position: absolute; z-index: 1; font-size: .7em; display: block; border: 0; background-position: 0 0; }
+
+.ui-slider-horizontal { height: .8em; }
+.ui-slider-horizontal .ui-slider-handle { top: -.3em; margin-left: -.6em; }
+.ui-slider-horizontal .ui-slider-range { top: 0; height: 100%; }
+.ui-slider-horizontal .ui-slider-range-min { left: 0; }
+.ui-slider-horizontal .ui-slider-range-max { right: 0; }
+
+.ui-slider-vertical { width: .8em; height: 100px; }
+.ui-slider-vertical .ui-slider-handle { left: -.3em; margin-left: 0; margin-bottom: -.6em; }
+.ui-slider-vertical .ui-slider-range { left: 0; width: 100%; }
+.ui-slider-vertical .ui-slider-range-min { bottom: 0; }
+.ui-slider-vertical .ui-slider-range-max { top: 0; }/*
+ * jQuery UI Datepicker 1.8.16
+ *
+ * Copyright 2011, AUTHORS.txt (http://jqueryui.com/about)
+ * Dual licensed under the MIT or GPL Version 2 licenses.
+ * http://jquery.org/license
+ *
+ * http://docs.jquery.com/UI/Datepicker#theming
+ */
+.ui-datepicker { width: 17em; padding: .2em .2em 0; display: none; }
+.ui-datepicker .ui-datepicker-header { position:relative; padding:.2em 0; }
+.ui-datepicker .ui-datepicker-prev, .ui-datepicker .ui-datepicker-next { position:absolute; top: 2px; width: 1.8em; height: 1.8em; }
+.ui-datepicker .ui-datepicker-prev-hover, .ui-datepicker .ui-datepicker-next-hover { top: 1px; }
+.ui-datepicker .ui-datepicker-prev { left:2px; }
+.ui-datepicker .ui-datepicker-next { right:2px; }
+.ui-datepicker .ui-datepicker-prev-hover { left:1px; }
+.ui-datepicker .ui-datepicker-next-hover { right:1px; }
+.ui-datepicker .ui-datepicker-prev span, .ui-datepicker .ui-datepicker-next span { display: block; position: absolute; left: 50%; margin-left: -8px; top: 50%; margin-top: -8px;  }
+.ui-datepicker .ui-datepicker-title { margin: 0 2.3em; line-height: 1.8em; text-align: center; }
+.ui-datepicker .ui-datepicker-title select { font-size:1em; margin:1px 0; }
+.ui-datepicker select.ui-datepicker-month-year {width: 100%;}
+.ui-datepicker select.ui-datepicker-month, 
+.ui-datepicker select.ui-datepicker-year { width: 49%;}
+.ui-datepicker table {width: 100%; font-size: .9em; border-collapse: collapse; margin:0 0 .4em; }
+.ui-datepicker th { padding: .7em .3em; text-align: center; font-weight: bold; border: 0;  }
+.ui-datepicker td { border: 0; padding: 1px; }
+.ui-datepicker td span, .ui-datepicker td a { display: block; padding: .2em; text-align: right; text-decoration: none; }
+.ui-datepicker .ui-datepicker-buttonpane { background-image: none; margin: .7em 0 0 0; padding:0 .2em; border-left: 0; border-right: 0; border-bottom: 0; }
+.ui-datepicker .ui-datepicker-buttonpane button { float: right; margin: .5em .2em .4em; cursor: pointer; padding: .2em .6em .3em .6em; width:auto; overflow:visible; }
+.ui-datepicker .ui-datepicker-buttonpane button.ui-datepicker-current { float:left; }
+
+/* with multiple calendars */
+.ui-datepicker.ui-datepicker-multi { width:auto; }
+.ui-datepicker-multi .ui-datepicker-group { float:left; }
+.ui-datepicker-multi .ui-datepicker-group table { width:95%; margin:0 auto .4em; }
+.ui-datepicker-multi-2 .ui-datepicker-group { width:50%; }
+.ui-datepicker-multi-3 .ui-datepicker-group { width:33.3%; }
+.ui-datepicker-multi-4 .ui-datepicker-group { width:25%; }
+.ui-datepicker-multi .ui-datepicker-group-last .ui-datepicker-header { border-left-width:0; }
+.ui-datepicker-multi .ui-datepicker-group-middle .ui-datepicker-header { border-left-width:0; }
+.ui-datepicker-multi .ui-datepicker-buttonpane { clear:left; }
+.ui-datepicker-row-break { clear:both; width:100%; font-size:0em; }
+
+/* RTL support */
+.ui-datepicker-rtl { direction: rtl; }
+.ui-datepicker-rtl .ui-datepicker-prev { right: 2px; left: auto; }
+.ui-datepicker-rtl .ui-datepicker-next { left: 2px; right: auto; }
+.ui-datepicker-rtl .ui-datepicker-prev:hover { right: 1px; left: auto; }
+.ui-datepicker-rtl .ui-datepicker-next:hover { left: 1px; right: auto; }
+.ui-datepicker-rtl .ui-datepicker-buttonpane { clear:right; }
+.ui-datepicker-rtl .ui-datepicker-buttonpane button { float: left; }
+.ui-datepicker-rtl .ui-datepicker-buttonpane button.ui-datepicker-current { float:right; }
+.ui-datepicker-rtl .ui-datepicker-group { float:right; }
+.ui-datepicker-rtl .ui-datepicker-group-last .ui-datepicker-header { border-right-width:0; border-left-width:1px; }
+.ui-datepicker-rtl .ui-datepicker-group-middle .ui-datepicker-header { border-right-width:0; border-left-width:1px; }
+
+/* IE6 IFRAME FIX (taken from datepicker 1.5.3 */
+.ui-datepicker-cover {
+    display: none; /*sorry for IE5*/
+    display/**/: block; /*sorry for IE5*/
+    position: absolute; /*must have*/
+    z-index: -1; /*must have*/
+    filter: mask(); /*must have*/
+    top: -4px; /*must have*/
+    left: -4px; /*must have*/
+    width: 200px; /*must have*/
+    height: 200px; /*must have*/
+}

common/static/js/vendor/jquery.event.drag-2.2.js

@@ -0,0 +1,402 @@
+/*! 
+ * jquery.event.drag - v 2.2
+ * Copyright (c) 2010 Three Dub Media - http://threedubmedia.com
+ * Open Source MIT License - http://threedubmedia.com/code/license
+ */
+// Created: 2008-06-04 
+// Updated: 2012-05-21
+// REQUIRES: jquery 1.7.x
+
+;(function( $ ){
+
+// add the jquery instance method
+$.fn.drag = function( str, arg, opts ){
+	// figure out the event type
+	var type = typeof str == "string" ? str : "",
+	// figure out the event handler...
+	fn = $.isFunction( str ) ? str : $.isFunction( arg ) ? arg : null;
+	// fix the event type
+	if ( type.indexOf("drag") !== 0 ) 
+		type = "drag"+ type;
+	// were options passed
+	opts = ( str == fn ? arg : opts ) || {};
+	// trigger or bind event handler
+	return fn ? this.bind( type, opts, fn ) : this.trigger( type );
+};
+
+// local refs (increase compression)
+var $event = $.event, 
+$special = $event.special,
+// configure the drag special event 
+drag = $special.drag = {
+	
+	// these are the default settings
+	defaults: {
+		which: 1, // mouse button pressed to start drag sequence
+		distance: 0, // distance dragged before dragstart
+		not: ':input', // selector to suppress dragging on target elements
+		handle: null, // selector to match handle target elements
+		relative: false, // true to use "position", false to use "offset"
+		drop: true, // false to suppress drop events, true or selector to allow
+		click: false // false to suppress click events after dragend (no proxy)
+	},
+	
+	// the key name for stored drag data
+	datakey: "dragdata",
+	
+	// prevent bubbling for better performance
+	noBubble: true,
+	
+	// count bound related events
+	add: function( obj ){ 
+		// read the interaction data
+		var data = $.data( this, drag.datakey ),
+		// read any passed options 
+		opts = obj.data || {};
+		// count another realted event
+		data.related += 1;
+		// extend data options bound with this event
+		// don't iterate "opts" in case it is a node 
+		$.each( drag.defaults, function( key, def ){
+			if ( opts[ key ] !== undefined )
+				data[ key ] = opts[ key ];
+		});
+	},
+	
+	// forget unbound related events
+	remove: function(){
+		$.data( this, drag.datakey ).related -= 1;
+	},
+	
+	// configure interaction, capture settings
+	setup: function(){
+		// check for related events
+		if ( $.data( this, drag.datakey ) ) 
+			return;
+		// initialize the drag data with copied defaults
+		var data = $.extend({ related:0 }, drag.defaults );
+		// store the interaction data
+		$.data( this, drag.datakey, data );
+		// bind the mousedown event, which starts drag interactions
+		$event.add( this, "touchstart mousedown", drag.init, data );
+		// prevent image dragging in IE...
+		if ( this.attachEvent ) 
+			this.attachEvent("ondragstart", drag.dontstart ); 
+	},
+	
+	// destroy configured interaction
+	teardown: function(){
+		var data = $.data( this, drag.datakey ) || {};
+		// check for related events
+		if ( data.related ) 
+			return;
+		// remove the stored data
+		$.removeData( this, drag.datakey );
+		// remove the mousedown event
+		$event.remove( this, "touchstart mousedown", drag.init );
+		// enable text selection
+		drag.textselect( true ); 
+		// un-prevent image dragging in IE...
+		if ( this.detachEvent ) 
+			this.detachEvent("ondragstart", drag.dontstart ); 
+	},
+		
+	// initialize the interaction
+	init: function( event ){ 
+		// sorry, only one touch at a time
+		if ( drag.touched ) 
+			return;
+		// the drag/drop interaction data
+		var dd = event.data, results;
+		// check the which directive
+		if ( event.which != 0 && dd.which > 0 && event.which != dd.which ) 
+			return; 
+		// check for suppressed selector
+		if ( $( event.target ).is( dd.not ) ) 
+			return;
+		// check for handle selector
+		if ( dd.handle && !$( event.target ).closest( dd.handle, event.currentTarget ).length ) 
+			return;
+
+		drag.touched = event.type == 'touchstart' ? this : null;
+		dd.propagates = 1;
+		dd.mousedown = this;
+		dd.interactions = [ drag.interaction( this, dd ) ];
+		dd.target = event.target;
+		dd.pageX = event.pageX;
+		dd.pageY = event.pageY;
+		dd.dragging = null;
+		// handle draginit event... 
+		results = drag.hijack( event, "draginit", dd );
+		// early cancel
+		if ( !dd.propagates )
+			return;
+		// flatten the result set
+		results = drag.flatten( results );
+		// insert new interaction elements
+		if ( results && results.length ){
+			dd.interactions = [];
+			$.each( results, function(){
+				dd.interactions.push( drag.interaction( this, dd ) );
+			});
+		}
+		// remember how many interactions are propagating
+		dd.propagates = dd.interactions.length;
+		// locate and init the drop targets
+		if ( dd.drop !== false && $special.drop ) 
+			$special.drop.handler( event, dd );
+		// disable text selection
+		drag.textselect( false ); 
+		// bind additional events...
+		if ( drag.touched )
+			$event.add( drag.touched, "touchmove touchend", drag.handler, dd );
+		else 
+			$event.add( document, "mousemove mouseup", drag.handler, dd );
+		// helps prevent text selection or scrolling
+		if ( !drag.touched || dd.live )
+			return false;
+	},	
+	
+	// returns an interaction object
+	interaction: function( elem, dd ){
+		var offset = $( elem )[ dd.relative ? "position" : "offset" ]() || { top:0, left:0 };
+		return {
+			drag: elem, 
+			callback: new drag.callback(), 
+			droppable: [],
+			offset: offset
+		};
+	},
+	
+	// handle drag-releatd DOM events
+	handler: function( event ){ 
+		// read the data before hijacking anything
+		var dd = event.data;	
+		// handle various events
+		switch ( event.type ){
+			// mousemove, check distance, start dragging
+			case !dd.dragging && 'touchmove': 
+				event.preventDefault();
+			case !dd.dragging && 'mousemove':
+				//  drag tolerance, x<> + y<> = distance<63>
+				if ( Math.pow(  event.pageX-dd.pageX, 2 ) + Math.pow(  event.pageY-dd.pageY, 2 ) < Math.pow( dd.distance, 2 ) ) 
+					break; // distance tolerance not reached
+				event.target = dd.target; // force target from "mousedown" event (fix distance issue)
+				drag.hijack( event, "dragstart", dd ); // trigger "dragstart"
+				if ( dd.propagates ) // "dragstart" not rejected
+					dd.dragging = true; // activate interaction
+			// mousemove, dragging
+			case 'touchmove':
+				event.preventDefault();
+			case 'mousemove':
+				if ( dd.dragging ){
+					// trigger "drag"		
+					drag.hijack( event, "drag", dd );
+					if ( dd.propagates ){
+						// manage drop events
+						if ( dd.drop !== false && $special.drop )
+							$special.drop.handler( event, dd ); // "dropstart", "dropend"							
+						break; // "drag" not rejected, stop		
+					}
+					event.type = "mouseup"; // helps "drop" handler behave
+				}
+			// mouseup, stop dragging
+			case 'touchend': 
+			case 'mouseup': 
+			default:
+				if ( drag.touched )
+					$event.remove( drag.touched, "touchmove touchend", drag.handler ); // remove touch events
+				else 
+					$event.remove( document, "mousemove mouseup", drag.handler ); // remove page events	
+				if ( dd.dragging ){
+					if ( dd.drop !== false && $special.drop )
+						$special.drop.handler( event, dd ); // "drop"
+					drag.hijack( event, "dragend", dd ); // trigger "dragend"	
+				}
+				drag.textselect( true ); // enable text selection
+				// if suppressing click events...
+				if ( dd.click === false && dd.dragging )
+					$.data( dd.mousedown, "suppress.click", new Date().getTime() + 5 );
+				dd.dragging = drag.touched = false; // deactivate element	
+				break;
+		}
+	},
+		
+	// re-use event object for custom events
+	hijack: function( event, type, dd, x, elem ){
+		// not configured
+		if ( !dd ) 
+			return;
+		// remember the original event and type
+		var orig = { event:event.originalEvent, type:event.type },
+		// is the event drag related or drog related?
+		mode = type.indexOf("drop") ? "drag" : "drop",
+		// iteration vars
+		result, i = x || 0, ia, $elems, callback,
+		len = !isNaN( x ) ? x : dd.interactions.length;
+		// modify the event type
+		event.type = type;
+		// remove the original event
+		event.originalEvent = null;
+		// initialize the results
+		dd.results = [];
+		// handle each interacted element
+		do if ( ia = dd.interactions[ i ] ){
+			// validate the interaction
+			if ( type !== "dragend" && ia.cancelled )
+				continue;
+			// set the dragdrop properties on the event object
+			callback = drag.properties( event, dd, ia );
+			// prepare for more results
+			ia.results = [];
+			// handle each element
+			$( elem || ia[ mode ] || dd.droppable ).each(function( p, subject ){
+				// identify drag or drop targets individually
+				callback.target = subject;
+				// force propagtion of the custom event
+				event.isPropagationStopped = function(){ return false; };
+				// handle the event	
+				result = subject ? $event.dispatch.call( subject, event, callback ) : null;
+				// stop the drag interaction for this element
+				if ( result === false ){
+					if ( mode == "drag" ){
+						ia.cancelled = true;
+						dd.propagates -= 1;
+					}
+					if ( type == "drop" ){
+						ia[ mode ][p] = null;
+					}
+				}
+				// assign any dropinit elements
+				else if ( type == "dropinit" )
+					ia.droppable.push( drag.element( result ) || subject );
+				// accept a returned proxy element 
+				if ( type == "dragstart" )
+					ia.proxy = $( drag.element( result ) || ia.drag )[0];
+				// remember this result	
+				ia.results.push( result );
+				// forget the event result, for recycling
+				delete event.result;
+				// break on cancelled handler
+				if ( type !== "dropinit" )
+					return result;
+			});	
+			// flatten the results	
+			dd.results[ i ] = drag.flatten( ia.results );	
+			// accept a set of valid drop targets
+			if ( type == "dropinit" )
+				ia.droppable = drag.flatten( ia.droppable );
+			// locate drop targets
+			if ( type == "dragstart" && !ia.cancelled )
+				callback.update(); 
+		}
+		while ( ++i < len )
+		// restore the original event & type
+		event.type = orig.type;
+		event.originalEvent = orig.event;
+		// return all handler results
+		return drag.flatten( dd.results );
+	},
+		
+	// extend the callback object with drag/drop properties...
+	properties: function( event, dd, ia ){		
+		var obj = ia.callback;
+		// elements
+		obj.drag = ia.drag;
+		obj.proxy = ia.proxy || ia.drag;
+		// starting mouse position
+		obj.startX = dd.pageX;
+		obj.startY = dd.pageY;
+		// current distance dragged
+		obj.deltaX = event.pageX - dd.pageX;
+		obj.deltaY = event.pageY - dd.pageY;
+		// original element position
+		obj.originalX = ia.offset.left;
+		obj.originalY = ia.offset.top;
+		// adjusted element position
+		obj.offsetX = obj.originalX + obj.deltaX; 
+		obj.offsetY = obj.originalY + obj.deltaY;
+		// assign the drop targets information
+		obj.drop = drag.flatten( ( ia.drop || [] ).slice() );
+		obj.available = drag.flatten( ( ia.droppable || [] ).slice() );
+		return obj;	
+	},
+	
+	// determine is the argument is an element or jquery instance
+	element: function( arg ){
+		if ( arg && ( arg.jquery || arg.nodeType == 1 ) )
+			return arg;
+	},
+	
+	// flatten nested jquery objects and arrays into a single dimension array
+	flatten: function( arr ){
+		return $.map( arr, function( member ){
+			return member && member.jquery ? $.makeArray( member ) : 
+				member && member.length ? drag.flatten( member ) : member;
+		});
+	},
+	
+	// toggles text selection attributes ON (true) or OFF (false)
+	textselect: function( bool ){ 
+		$( document )[ bool ? "unbind" : "bind" ]("selectstart", drag.dontstart )
+			.css("MozUserSelect", bool ? "" : "none" );
+		// .attr("unselectable", bool ? "off" : "on" )
+		document.unselectable = bool ? "off" : "on"; 
+	},
+	
+	// suppress "selectstart" and "ondragstart" events
+	dontstart: function(){ 
+		return false; 
+	},
+	
+	// a callback instance contructor
+	callback: function(){}
+	
+};
+
+// callback methods
+drag.callback.prototype = {
+	update: function(){
+		if ( $special.drop && this.available.length )
+			$.each( this.available, function( i ){
+				$special.drop.locate( this, i );
+			});
+	}
+};
+
+// patch $.event.$dispatch to allow suppressing clicks
+var $dispatch = $event.dispatch;
+$event.dispatch = function( event ){
+	if ( $.data( this, "suppress."+ event.type ) - new Date().getTime() > 0 ){
+		$.removeData( this, "suppress."+ event.type );
+		return;
+	}
+	return $dispatch.apply( this, arguments );
+};
+
+// event fix hooks for touch events...
+var touchHooks = 
+$event.fixHooks.touchstart = 
+$event.fixHooks.touchmove = 
+$event.fixHooks.touchend =
+$event.fixHooks.touchcancel = {
+	props: "clientX clientY pageX pageY screenX screenY".split( " " ),
+	filter: function( event, orig ) {
+		if ( orig ){
+			var touched = ( orig.touches && orig.touches[0] )
+				|| ( orig.changedTouches && orig.changedTouches[0] )
+				|| null; 
+			// iOS webkit: touchstart, touchmove, touchend
+			if ( touched ) 
+				$.each( touchHooks.props, function( i, prop ){
+					event[ prop ] = touched[ prop ];
+				});
+		}
+		return event;
+	}
+};
+
+// share the same special event configuration with related events...
+$special.draginit = $special.dragstart = $special.dragend = drag;
+
+})( jQuery );

common/static/js/vendor/jquery.event.drop-2.2.js

@@ -0,0 +1,302 @@
+/*! 
+ * jquery.event.drop - v 2.2
+ * Copyright (c) 2010 Three Dub Media - http://threedubmedia.com
+ * Open Source MIT License - http://threedubmedia.com/code/license
+ */
+// Created: 2008-06-04 
+// Updated: 2012-05-21
+// REQUIRES: jquery 1.7.x, event.drag 2.2
+
+;(function($){ // secure $ jQuery alias
+
+// Events: drop, dropstart, dropend
+
+// add the jquery instance method
+$.fn.drop = function( str, arg, opts ){
+	// figure out the event type
+	var type = typeof str == "string" ? str : "",
+	// figure out the event handler...
+	fn = $.isFunction( str ) ? str : $.isFunction( arg ) ? arg : null;
+	// fix the event type
+	if ( type.indexOf("drop") !== 0 ) 
+		type = "drop"+ type;
+	// were options passed
+	opts = ( str == fn ? arg : opts ) || {};
+	// trigger or bind event handler
+	return fn ? this.bind( type, opts, fn ) : this.trigger( type );
+};
+
+// DROP MANAGEMENT UTILITY
+// returns filtered drop target elements, caches their positions
+$.drop = function( opts ){ 
+	opts = opts || {};
+	// safely set new options...
+	drop.multi = opts.multi === true ? Infinity : 
+		opts.multi === false ? 1 : !isNaN( opts.multi ) ? opts.multi : drop.multi;
+	drop.delay = opts.delay || drop.delay;
+	drop.tolerance = $.isFunction( opts.tolerance ) ? opts.tolerance : 
+		opts.tolerance === null ? null : drop.tolerance;
+	drop.mode = opts.mode || drop.mode || 'intersect';
+};
+
+// local refs (increase compression)
+var $event = $.event, 
+$special = $event.special,
+// configure the drop special event
+drop = $.event.special.drop = {
+
+	// these are the default settings
+	multi: 1, // allow multiple drop winners per dragged element
+	delay: 20, // async timeout delay
+	mode: 'overlap', // drop tolerance mode
+		
+	// internal cache
+	targets: [], 
+	
+	// the key name for stored drop data
+	datakey: "dropdata",
+		
+	// prevent bubbling for better performance
+	noBubble: true,
+	
+	// count bound related events
+	add: function( obj ){ 
+		// read the interaction data
+		var data = $.data( this, drop.datakey );
+		// count another realted event
+		data.related += 1;
+	},
+	
+	// forget unbound related events
+	remove: function(){
+		$.data( this, drop.datakey ).related -= 1;
+	},
+	
+	// configure the interactions
+	setup: function(){
+		// check for related events
+		if ( $.data( this, drop.datakey ) ) 
+			return;
+		// initialize the drop element data
+		var data = { 
+			related: 0,
+			active: [],
+			anyactive: 0,
+			winner: 0,
+			location: {}
+		};
+		// store the drop data on the element
+		$.data( this, drop.datakey, data );
+		// store the drop target in internal cache
+		drop.targets.push( this );
+	},
+	
+	// destroy the configure interaction	
+	teardown: function(){ 
+		var data = $.data( this, drop.datakey ) || {};
+		// check for related events
+		if ( data.related ) 
+			return;
+		// remove the stored data
+		$.removeData( this, drop.datakey );
+		// reference the targeted element
+		var element = this;
+		// remove from the internal cache
+		drop.targets = $.grep( drop.targets, function( target ){ 
+			return ( target !== element ); 
+		});
+	},
+	
+	// shared event handler
+	handler: function( event, dd ){ 
+		// local vars
+		var results, $targets;
+		// make sure the right data is available
+		if ( !dd ) 
+			return;
+		// handle various events
+		switch ( event.type ){
+			// draginit, from $.event.special.drag
+			case 'mousedown': // DROPINIT >>
+			case 'touchstart': // DROPINIT >>
+				// collect and assign the drop targets
+				$targets =  $( drop.targets );
+				if ( typeof dd.drop == "string" )
+					$targets = $targets.filter( dd.drop );
+				// reset drop data winner properties
+				$targets.each(function(){
+					var data = $.data( this, drop.datakey );
+					data.active = [];
+					data.anyactive = 0;
+					data.winner = 0;
+				});
+				// set available target elements
+				dd.droppable = $targets;
+				// activate drop targets for the initial element being dragged
+				$special.drag.hijack( event, "dropinit", dd ); 
+				break;
+			// drag, from $.event.special.drag
+			case 'mousemove': // TOLERATE >>
+			case 'touchmove': // TOLERATE >>
+				drop.event = event; // store the mousemove event
+				if ( !drop.timer )
+					// monitor drop targets
+					drop.tolerate( dd ); 
+				break;
+			// dragend, from $.event.special.drag
+			case 'mouseup': // DROP >> DROPEND >>
+			case 'touchend': // DROP >> DROPEND >>
+				drop.timer = clearTimeout( drop.timer ); // delete timer	
+				if ( dd.propagates ){
+					$special.drag.hijack( event, "drop", dd ); 
+					$special.drag.hijack( event, "dropend", dd ); 
+				}
+				break;
+				
+		}
+	},
+		
+	// returns the location positions of an element
+	locate: function( elem, index ){ 
+		var data = $.data( elem, drop.datakey ),
+		$elem = $( elem ), 
+		posi = $elem.offset() || {}, 
+		height = $elem.outerHeight(), 
+		width = $elem.outerWidth(),
+		location = { 
+			elem: elem, 
+			width: width, 
+			height: height,
+			top: posi.top, 
+			left: posi.left, 
+			right: posi.left + width, 
+			bottom: posi.top + height
+		};
+		// drag elements might not have dropdata
+		if ( data ){
+			data.location = location;
+			data.index = index;
+			data.elem = elem;
+		}
+		return location;
+	},
+	
+	// test the location positions of an element against another OR an X,Y coord
+	contains: function( target, test ){ // target { location } contains test [x,y] or { location }
+		return ( ( test[0] || test.left ) >= target.left && ( test[0] || test.right ) <= target.right
+			&& ( test[1] || test.top ) >= target.top && ( test[1] || test.bottom ) <= target.bottom ); 
+	},
+	
+	// stored tolerance modes
+	modes: { // fn scope: "$.event.special.drop" object 
+		// target with mouse wins, else target with most overlap wins
+		'intersect': function( event, proxy, target ){
+			return this.contains( target, [ event.pageX, event.pageY ] ) ? // check cursor
+				1e9 : this.modes.overlap.apply( this, arguments ); // check overlap
+		},
+		// target with most overlap wins	
+		'overlap': function( event, proxy, target ){
+			// calculate the area of overlap...
+			return Math.max( 0, Math.min( target.bottom, proxy.bottom ) - Math.max( target.top, proxy.top ) )
+				* Math.max( 0, Math.min( target.right, proxy.right ) - Math.max( target.left, proxy.left ) );
+		},
+		// proxy is completely contained within target bounds	
+		'fit': function( event, proxy, target ){
+			return this.contains( target, proxy ) ? 1 : 0;
+		},
+		// center of the proxy is contained within target bounds	
+		'middle': function( event, proxy, target ){
+			return this.contains( target, [ proxy.left + proxy.width * .5, proxy.top + proxy.height * .5 ] ) ? 1 : 0;
+		}
+	},	
+	
+	// sort drop target cache by by winner (dsc), then index (asc)
+	sort: function( a, b ){
+		return ( b.winner - a.winner ) || ( a.index - b.index );
+	},
+		
+	// async, recursive tolerance execution
+	tolerate: function( dd ){		
+		// declare local refs
+		var i, drp, drg, data, arr, len, elem,
+		// interaction iteration variables
+		x = 0, ia, end = dd.interactions.length,
+		// determine the mouse coords
+		xy = [ drop.event.pageX, drop.event.pageY ],
+		// custom or stored tolerance fn
+		tolerance = drop.tolerance || drop.modes[ drop.mode ];
+		// go through each passed interaction...
+		do if ( ia = dd.interactions[x] ){
+			// check valid interaction
+			if ( !ia )
+				return; 
+			// initialize or clear the drop data
+			ia.drop = [];
+			// holds the drop elements
+			arr = []; 
+			len = ia.droppable.length;
+			// determine the proxy location, if needed
+			if ( tolerance )
+				drg = drop.locate( ia.proxy ); 
+			// reset the loop
+			i = 0;
+			// loop each stored drop target
+			do if ( elem = ia.droppable[i] ){ 
+				data = $.data( elem, drop.datakey );
+				drp = data.location;
+				if ( !drp ) continue;
+				// find a winner: tolerance function is defined, call it
+				data.winner = tolerance ? tolerance.call( drop, drop.event, drg, drp ) 
+					// mouse position is always the fallback
+					: drop.contains( drp, xy ) ? 1 : 0; 
+				arr.push( data );	
+			} while ( ++i < len ); // loop 
+			// sort the drop targets
+			arr.sort( drop.sort );			
+			// reset the loop
+			i = 0;
+			// loop through all of the targets again
+			do if ( data = arr[ i ] ){
+				// winners...
+				if ( data.winner && ia.drop.length < drop.multi ){
+					// new winner... dropstart
+					if ( !data.active[x] && !data.anyactive ){
+						// check to make sure that this is not prevented
+						if ( $special.drag.hijack( drop.event, "dropstart", dd, x, data.elem )[0] !== false ){ 	
+							data.active[x] = 1;
+							data.anyactive += 1;
+						}
+						// if false, it is not a winner
+						else
+							data.winner = 0;
+					}
+					// if it is still a winner
+					if ( data.winner )
+						ia.drop.push( data.elem );
+				}
+				// losers... 
+				else if ( data.active[x] && data.anyactive == 1 ){
+					// former winner... dropend
+					$special.drag.hijack( drop.event, "dropend", dd, x, data.elem ); 
+					data.active[x] = 0;
+					data.anyactive -= 1;
+				}
+			} while ( ++i < len ); // loop 		
+		} while ( ++x < end ) // loop
+		// check if the mouse is still moving or is idle
+		if ( drop.last && xy[0] == drop.last.pageX && xy[1] == drop.last.pageY ) 
+			delete drop.timer; // idle, don't recurse
+		else  // recurse
+			drop.timer = setTimeout(function(){ 
+				drop.tolerate( dd ); 
+			}, drop.delay );
+		// remember event, to compare idleness
+		drop.last = drop.event; 
+	}
+	
+};
+
+// share the same special event configuration with related events...
+$special.dropinit = $special.dropstart = $special.dropend = drop;
+
+})(jQuery); // confine scope	

common/static/js/vendor/slick.core.js

@@ -0,0 +1,458 @@
+/***
+ * Contains core SlickGrid classes.
+ * @module Core
+ * @namespace Slick
+ */
+
+(function ($) {
+  // register namespace
+  $.extend(true, window, {
+    "Slick": {
+      "Event": Event,
+      "EventData": EventData,
+      "EventHandler": EventHandler,
+      "Range": Range,
+      "NonDataRow": NonDataItem,
+      "Group": Group,
+      "GroupTotals": GroupTotals,
+      "EditorLock": EditorLock,
+
+      /***
+       * A global singleton editor lock.
+       * @class GlobalEditorLock
+       * @static
+       * @constructor
+       */
+      "GlobalEditorLock": new EditorLock()
+    }
+  });
+
+  /***
+   * An event object for passing data to event handlers and letting them control propagation.
+   * <p>This is pretty much identical to how W3C and jQuery implement events.</p>
+   * @class EventData
+   * @constructor
+   */
+  function EventData() {
+    var isPropagationStopped = false;
+    var isImmediatePropagationStopped = false;
+
+    /***
+     * Stops event from propagating up the DOM tree.
+     * @method stopPropagation
+     */
+    this.stopPropagation = function () {
+      isPropagationStopped = true;
+    };
+
+    /***
+     * Returns whether stopPropagation was called on this event object.
+     * @method isPropagationStopped
+     * @return {Boolean}
+     */
+    this.isPropagationStopped = function () {
+      return isPropagationStopped;
+    };
+
+    /***
+     * Prevents the rest of the handlers from being executed.
+     * @method stopImmediatePropagation
+     */
+    this.stopImmediatePropagation = function () {
+      isImmediatePropagationStopped = true;
+    };
+
+    /***
+     * Returns whether stopImmediatePropagation was called on this event object.\
+     * @method isImmediatePropagationStopped
+     * @return {Boolean}
+     */
+    this.isImmediatePropagationStopped = function () {
+      return isImmediatePropagationStopped;
+    }
+  }
+
+  /***
+   * A simple publisher-subscriber implementation.
+   * @class Event
+   * @constructor
+   */
+  function Event() {
+    var handlers = [];
+
+    /***
+     * Adds an event handler to be called when the event is fired.
+     * <p>Event handler will receive two arguments - an <code>EventData</code> and the <code>data</code>
+     * object the event was fired with.<p>
+     * @method subscribe
+     * @param fn {Function} Event handler.
+     */
+    this.subscribe = function (fn) {
+      handlers.push(fn);
+    };
+
+    /***
+     * Removes an event handler added with <code>subscribe(fn)</code>.
+     * @method unsubscribe
+     * @param fn {Function} Event handler to be removed.
+     */
+    this.unsubscribe = function (fn) {
+      for (var i = handlers.length - 1; i >= 0; i--) {
+        if (handlers[i] === fn) {
+          handlers.splice(i, 1);
+        }
+      }
+    };
+
+    /***
+     * Fires an event notifying all subscribers.
+     * @method notify
+     * @param args {Object} Additional data object to be passed to all handlers.
+     * @param e {EventData}
+     *      Optional.
+     *      An <code>EventData</code> object to be passed to all handlers.
+     *      For DOM events, an existing W3C/jQuery event object can be passed in.
+     * @param scope {Object}
+     *      Optional.
+     *      The scope ("this") within which the handler will be executed.
+     *      If not specified, the scope will be set to the <code>Event</code> instance.
+     */
+    this.notify = function (args, e, scope) {
+      e = e || new EventData();
+      scope = scope || this;
+
+      var returnValue;
+      for (var i = 0; i < handlers.length && !(e.isPropagationStopped() || e.isImmediatePropagationStopped()); i++) {
+        returnValue = handlers[i].call(scope, e, args);
+      }
+
+      return returnValue;
+    };
+  }
+
+  function EventHandler() {
+    var handlers = [];
+
+    this.subscribe = function (event, handler) {
+      handlers.push({
+        event: event,
+        handler: handler
+      });
+      event.subscribe(handler);
+
+      return this;  // allow chaining
+    };
+
+    this.unsubscribe = function (event, handler) {
+      var i = handlers.length;
+      while (i--) {
+        if (handlers[i].event === event &&
+            handlers[i].handler === handler) {
+          handlers.splice(i, 1);
+          event.unsubscribe(handler);
+          return;
+        }
+      }
+
+      return this;  // allow chaining
+    };
+
+    this.unsubscribeAll = function () {
+      var i = handlers.length;
+      while (i--) {
+        handlers[i].event.unsubscribe(handlers[i].handler);
+      }
+      handlers = [];
+
+      return this;  // allow chaining
+    }
+  }
+
+  /***
+   * A structure containing a range of cells.
+   * @class Range
+   * @constructor
+   * @param fromRow {Integer} Starting row.
+   * @param fromCell {Integer} Starting cell.
+   * @param toRow {Integer} Optional. Ending row. Defaults to <code>fromRow</code>.
+   * @param toCell {Integer} Optional. Ending cell. Defaults to <code>fromCell</code>.
+   */
+  function Range(fromRow, fromCell, toRow, toCell) {
+    if (toRow === undefined && toCell === undefined) {
+      toRow = fromRow;
+      toCell = fromCell;
+    }
+
+    /***
+     * @property fromRow
+     * @type {Integer}
+     */
+    this.fromRow = Math.min(fromRow, toRow);
+
+    /***
+     * @property fromCell
+     * @type {Integer}
+     */
+    this.fromCell = Math.min(fromCell, toCell);
+
+    /***
+     * @property toRow
+     * @type {Integer}
+     */
+    this.toRow = Math.max(fromRow, toRow);
+
+    /***
+     * @property toCell
+     * @type {Integer}
+     */
+    this.toCell = Math.max(fromCell, toCell);
+
+    /***
+     * Returns whether a range represents a single row.
+     * @method isSingleRow
+     * @return {Boolean}
+     */
+    this.isSingleRow = function () {
+      return this.fromRow == this.toRow;
+    };
+
+    /***
+     * Returns whether a range represents a single cell.
+     * @method isSingleCell
+     * @return {Boolean}
+     */
+    this.isSingleCell = function () {
+      return this.fromRow == this.toRow && this.fromCell == this.toCell;
+    };
+
+    /***
+     * Returns whether a range contains a given cell.
+     * @method contains
+     * @param row {Integer}
+     * @param cell {Integer}
+     * @return {Boolean}
+     */
+    this.contains = function (row, cell) {
+      return row >= this.fromRow && row <= this.toRow &&
+          cell >= this.fromCell && cell <= this.toCell;
+    };
+
+    /***
+     * Returns a readable representation of a range.
+     * @method toString
+     * @return {String}
+     */
+    this.toString = function () {
+      if (this.isSingleCell()) {
+        return "(" + this.fromRow + ":" + this.fromCell + ")";
+      }
+      else {
+        return "(" + this.fromRow + ":" + this.fromCell + " - " + this.toRow + ":" + this.toCell + ")";
+      }
+    }
+  }
+
+
+  /***
+   * A base class that all special / non-data rows (like Group and GroupTotals) derive from.
+   * @class NonDataItem
+   * @constructor
+   */
+  function NonDataItem() {
+    this.__nonDataRow = true;
+  }
+
+
+  /***
+   * Information about a group of rows.
+   * @class Group
+   * @extends Slick.NonDataItem
+   * @constructor
+   */
+  function Group() {
+    this.__group = true;
+
+    /**
+     * Grouping level, starting with 0.
+     * @property level
+     * @type {Number}
+     */
+    this.level = 0;
+
+    /***
+     * Number of rows in the group.
+     * @property count
+     * @type {Integer}
+     */
+    this.count = 0;
+
+    /***
+     * Grouping value.
+     * @property value
+     * @type {Object}
+     */
+    this.value = null;
+
+    /***
+     * Formatted display value of the group.
+     * @property title
+     * @type {String}
+     */
+    this.title = null;
+
+    /***
+     * Whether a group is collapsed.
+     * @property collapsed
+     * @type {Boolean}
+     */
+    this.collapsed = false;
+
+    /***
+     * GroupTotals, if any.
+     * @property totals
+     * @type {GroupTotals}
+     */
+    this.totals = null;
+
+    /**
+     * Rows that are part of the group.
+     * @property rows
+     * @type {Array}
+     */
+    this.rows = [];
+
+    /**
+     * Sub-groups that are part of the group.
+     * @property groups
+     * @type {Array}
+     */
+    this.groups = null;
+
+    /**
+     * A unique key used to identify the group.  This key can be used in calls to DataView
+     * collapseGroup() or expandGroup().
+     * @property groupingKey
+     * @type {Object}
+     */
+    this.groupingKey = null;
+  }
+
+  Group.prototype = new NonDataItem();
+
+  /***
+   * Compares two Group instances.
+   * @method equals
+   * @return {Boolean}
+   * @param group {Group} Group instance to compare to.
+   */
+  Group.prototype.equals = function (group) {
+    return this.value === group.value &&
+        this.count === group.count &&
+        this.collapsed === group.collapsed;
+  };
+
+  /***
+   * Information about group totals.
+   * An instance of GroupTotals will be created for each totals row and passed to the aggregators
+   * so that they can store arbitrary data in it.  That data can later be accessed by group totals
+   * formatters during the display.
+   * @class GroupTotals
+   * @extends Slick.NonDataItem
+   * @constructor
+   */
+  function GroupTotals() {
+    this.__groupTotals = true;
+
+    /***
+     * Parent Group.
+     * @param group
+     * @type {Group}
+     */
+    this.group = null;
+  }
+
+  GroupTotals.prototype = new NonDataItem();
+
+  /***
+   * A locking helper to track the active edit controller and ensure that only a single controller
+   * can be active at a time.  This prevents a whole class of state and validation synchronization
+   * issues.  An edit controller (such as SlickGrid) can query if an active edit is in progress
+   * and attempt a commit or cancel before proceeding.
+   * @class EditorLock
+   * @constructor
+   */
+  function EditorLock() {
+    var activeEditController = null;
+
+    /***
+     * Returns true if a specified edit controller is active (has the edit lock).
+     * If the parameter is not specified, returns true if any edit controller is active.
+     * @method isActive
+     * @param editController {EditController}
+     * @return {Boolean}
+     */
+    this.isActive = function (editController) {
+      return (editController ? activeEditController === editController : activeEditController !== null);
+    };
+
+    /***
+     * Sets the specified edit controller as the active edit controller (acquire edit lock).
+     * If another edit controller is already active, and exception will be thrown.
+     * @method activate
+     * @param editController {EditController} edit controller acquiring the lock
+     */
+    this.activate = function (editController) {
+      if (editController === activeEditController) { // already activated?
+        return;
+      }
+      if (activeEditController !== null) {
+        throw "SlickGrid.EditorLock.activate: an editController is still active, can't activate another editController";
+      }
+      if (!editController.commitCurrentEdit) {
+        throw "SlickGrid.EditorLock.activate: editController must implement .commitCurrentEdit()";
+      }
+      if (!editController.cancelCurrentEdit) {
+        throw "SlickGrid.EditorLock.activate: editController must implement .cancelCurrentEdit()";
+      }
+      activeEditController = editController;
+    };
+
+    /***
+     * Unsets the specified edit controller as the active edit controller (release edit lock).
+     * If the specified edit controller is not the active one, an exception will be thrown.
+     * @method deactivate
+     * @param editController {EditController} edit controller releasing the lock
+     */
+    this.deactivate = function (editController) {
+      if (activeEditController !== editController) {
+        throw "SlickGrid.EditorLock.deactivate: specified editController is not the currently active one";
+      }
+      activeEditController = null;
+    };
+
+    /***
+     * Attempts to commit the current edit by calling "commitCurrentEdit" method on the active edit
+     * controller and returns whether the commit attempt was successful (commit may fail due to validation
+     * errors, etc.).  Edit controller's "commitCurrentEdit" must return true if the commit has succeeded
+     * and false otherwise.  If no edit controller is active, returns true.
+     * @method commitCurrentEdit
+     * @return {Boolean}
+     */
+    this.commitCurrentEdit = function () {
+      return (activeEditController ? activeEditController.commitCurrentEdit() : true);
+    };
+
+    /***
+     * Attempts to cancel the current edit by calling "cancelCurrentEdit" method on the active edit
+     * controller and returns whether the edit was successfully cancelled.  If no edit controller is
+     * active, returns true.
+     * @method cancelCurrentEdit
+     * @return {Boolean}
+     */
+    this.cancelCurrentEdit = function cancelCurrentEdit() {
+      return (activeEditController ? activeEditController.cancelCurrentEdit() : true);
+    };
+  }
+})(jQuery);
+
+

common/static/js/vendor/slick.dataview.js

@@ -0,0 +1,1063 @@
+(function ($) {
+  $.extend(true, window, {
+    Slick: {
+      Data: {
+        DataView: DataView,
+        Aggregators: {
+          Avg: AvgAggregator,
+          Min: MinAggregator,
+          Max: MaxAggregator,
+          Sum: SumAggregator
+        }
+      }
+    }
+  });
+
+
+  /***
+   * A sample Model implementation.
+   * Provides a filtered view of the underlying data.
+   *
+   * Relies on the data item having an "id" property uniquely identifying it.
+   */
+  function DataView(options) {
+    var self = this;
+
+    var defaults = {
+      groupItemMetadataProvider: null,
+      inlineFilters: false
+    };
+
+
+    // private
+    var idProperty = "id";  // property holding a unique row id
+    var items = [];         // data by index
+    var rows = [];          // data by row
+    var idxById = {};       // indexes by id
+    var rowsById = null;    // rows by id; lazy-calculated
+    var filter = null;      // filter function
+    var updated = null;     // updated item ids
+    var suspend = false;    // suspends the recalculation
+    var sortAsc = true;
+    var fastSortField;
+    var sortComparer;
+    var refreshHints = {};
+    var prevRefreshHints = {};
+    var filterArgs;
+    var filteredItems = [];
+    var compiledFilter;
+    var compiledFilterWithCaching;
+    var filterCache = [];
+
+    // grouping
+    var groupingInfoDefaults = {
+      getter: null,
+      formatter: null,
+      comparer: function(a, b) { return a.value - b.value; },
+      predefinedValues: [],
+      aggregators: [],
+      aggregateEmpty: false,
+      aggregateCollapsed: false,
+      aggregateChildGroups: false,
+      collapsed: false,
+      displayTotalsRow: true
+    };
+    var groupingInfos = [];
+    var groups = [];
+    var toggledGroupsByLevel = [];
+    var groupingDelimiter = ':|:';
+
+    var pagesize = 0;
+    var pagenum = 0;
+    var totalRows = 0;
+
+    // events
+    var onRowCountChanged = new Slick.Event();
+    var onRowsChanged = new Slick.Event();
+    var onPagingInfoChanged = new Slick.Event();
+
+    options = $.extend(true, {}, defaults, options);
+
+
+    function beginUpdate() {
+      suspend = true;
+    }
+
+    function endUpdate() {
+      suspend = false;
+      refresh();
+    }
+
+    function setRefreshHints(hints) {
+      refreshHints = hints;
+    }
+
+    function setFilterArgs(args) {
+      filterArgs = args;
+    }
+
+    function updateIdxById(startingIndex) {
+      startingIndex = startingIndex || 0;
+      var id;
+      for (var i = startingIndex, l = items.length; i < l; i++) {
+        id = items[i][idProperty];
+        if (id === undefined) {
+          throw "Each data element must implement a unique 'id' property";
+        }
+        idxById[id] = i;
+      }
+    }
+
+    function ensureIdUniqueness() {
+      var id;
+      for (var i = 0, l = items.length; i < l; i++) {
+        id = items[i][idProperty];
+        if (id === undefined || idxById[id] !== i) {
+          throw "Each data element must implement a unique 'id' property";
+        }
+      }
+    }
+
+    function getItems() {
+      return items;
+    }
+
+    function setItems(data, objectIdProperty) {
+      if (objectIdProperty !== undefined) {
+        idProperty = objectIdProperty;
+      }
+      items = filteredItems = data;
+      idxById = {};
+      updateIdxById();
+      ensureIdUniqueness();
+      refresh();
+    }
+
+    function setPagingOptions(args) {
+      if (args.pageSize != undefined) {
+        pagesize = args.pageSize;
+        pagenum = pagesize ? Math.min(pagenum, Math.max(0, Math.ceil(totalRows / pagesize) - 1)) : 0;
+      }
+
+      if (args.pageNum != undefined) {
+        pagenum = Math.min(args.pageNum, Math.max(0, Math.ceil(totalRows / pagesize) - 1));
+      }
+
+      onPagingInfoChanged.notify(getPagingInfo(), null, self);
+
+      refresh();
+    }
+
+    function getPagingInfo() {
+      var totalPages = pagesize ? Math.max(1, Math.ceil(totalRows / pagesize)) : 1;
+      return {pageSize: pagesize, pageNum: pagenum, totalRows: totalRows, totalPages: totalPages};
+    }
+
+    function sort(comparer, ascending) {
+      sortAsc = ascending;
+      sortComparer = comparer;
+      fastSortField = null;
+      if (ascending === false) {
+        items.reverse();
+      }
+      items.sort(comparer);
+      if (ascending === false) {
+        items.reverse();
+      }
+      idxById = {};
+      updateIdxById();
+      refresh();
+    }
+
+    /***
+     * Provides a workaround for the extremely slow sorting in IE.
+     * Does a [lexicographic] sort on a give column by temporarily overriding Object.prototype.toString
+     * to return the value of that field and then doing a native Array.sort().
+     */
+    function fastSort(field, ascending) {
+      sortAsc = ascending;
+      fastSortField = field;
+      sortComparer = null;
+      var oldToString = Object.prototype.toString;
+      Object.prototype.toString = (typeof field == "function") ? field : function () {
+        return this[field]
+      };
+      // an extra reversal for descending sort keeps the sort stable
+      // (assuming a stable native sort implementation, which isn't true in some cases)
+      if (ascending === false) {
+        items.reverse();
+      }
+      items.sort();
+      Object.prototype.toString = oldToString;
+      if (ascending === false) {
+        items.reverse();
+      }
+      idxById = {};
+      updateIdxById();
+      refresh();
+    }
+
+    function reSort() {
+      if (sortComparer) {
+        sort(sortComparer, sortAsc);
+      } else if (fastSortField) {
+        fastSort(fastSortField, sortAsc);
+      }
+    }
+
+    function setFilter(filterFn) {
+      filter = filterFn;
+      if (options.inlineFilters) {
+        compiledFilter = compileFilter();
+        compiledFilterWithCaching = compileFilterWithCaching();
+      }
+      refresh();
+    }
+
+    function getGrouping() {
+      return groupingInfos;
+    }
+
+    function setGrouping(groupingInfo) {
+      if (!options.groupItemMetadataProvider) {
+        options.groupItemMetadataProvider = new Slick.Data.GroupItemMetadataProvider();
+      }
+
+      groups = [];
+      toggledGroupsByLevel = [];
+      groupingInfo = groupingInfo || [];
+      groupingInfos = (groupingInfo instanceof Array) ? groupingInfo : [groupingInfo];
+
+      for (var i = 0; i < groupingInfos.length; i++) {
+        var gi = groupingInfos[i] = $.extend(true, {}, groupingInfoDefaults, groupingInfos[i]);
+        gi.getterIsAFn = typeof gi.getter === "function";
+
+        // pre-compile accumulator loops
+        gi.compiledAccumulators = [];
+        var idx = gi.aggregators.length;
+        while (idx--) {
+          gi.compiledAccumulators[idx] = compileAccumulatorLoop(gi.aggregators[idx]);
+        }
+
+        toggledGroupsByLevel[i] = {};
+      }
+
+      refresh();
+    }
+
+    /**
+     * @deprecated Please use {@link setGrouping}.
+     */
+    function groupBy(valueGetter, valueFormatter, sortComparer) {
+      if (valueGetter == null) {
+        setGrouping([]);
+        return;
+      }
+
+      setGrouping({
+        getter: valueGetter,
+        formatter: valueFormatter,
+        comparer: sortComparer
+      });
+    }
+
+    /**
+     * @deprecated Please use {@link setGrouping}.
+     */
+    function setAggregators(groupAggregators, includeCollapsed) {
+      if (!groupingInfos.length) {
+        throw new Error("At least one grouping must be specified before calling setAggregators().");
+      }
+
+      groupingInfos[0].aggregators = groupAggregators;
+      groupingInfos[0].aggregateCollapsed = includeCollapsed;
+
+      setGrouping(groupingInfos);
+    }
+
+    function getItemByIdx(i) {
+      return items[i];
+    }
+
+    function getIdxById(id) {
+      return idxById[id];
+    }
+
+    function ensureRowsByIdCache() {
+      if (!rowsById) {
+        rowsById = {};
+        for (var i = 0, l = rows.length; i < l; i++) {
+          rowsById[rows[i][idProperty]] = i;
+        }
+      }
+    }
+
+    function getRowById(id) {
+      ensureRowsByIdCache();
+      return rowsById[id];
+    }
+
+    function getItemById(id) {
+      return items[idxById[id]];
+    }
+
+    function mapIdsToRows(idArray) {
+      var rows = [];
+      ensureRowsByIdCache();
+      for (var i = 0; i < idArray.length; i++) {
+        var row = rowsById[idArray[i]];
+        if (row != null) {
+          rows[rows.length] = row;
+        }
+      }
+      return rows;
+    }
+
+    function mapRowsToIds(rowArray) {
+      var ids = [];
+      for (var i = 0; i < rowArray.length; i++) {
+        if (rowArray[i] < rows.length) {
+          ids[ids.length] = rows[rowArray[i]][idProperty];
+        }
+      }
+      return ids;
+    }
+
+    function updateItem(id, item) {
+      if (idxById[id] === undefined || id !== item[idProperty]) {
+        throw "Invalid or non-matching id";
+      }
+      items[idxById[id]] = item;
+      if (!updated) {
+        updated = {};
+      }
+      updated[id] = true;
+      refresh();
+    }
+
+    function insertItem(insertBefore, item) {
+      items.splice(insertBefore, 0, item);
+      updateIdxById(insertBefore);
+      refresh();
+    }
+
+    function addItem(item) {
+      items.push(item);
+      updateIdxById(items.length - 1);
+      refresh();
+    }
+
+    function deleteItem(id) {
+      var idx = idxById[id];
+      if (idx === undefined) {
+        throw "Invalid id";
+      }
+      delete idxById[id];
+      items.splice(idx, 1);
+      updateIdxById(idx);
+      refresh();
+    }
+
+    function getLength() {
+      return rows.length;
+    }
+
+    function getItem(i) {
+      return rows[i];
+    }
+
+    function getItemMetadata(i) {
+      var item = rows[i];
+      if (item === undefined) {
+        return null;
+      }
+
+      // overrides for grouping rows
+      if (item.__group) {
+        return options.groupItemMetadataProvider.getGroupRowMetadata(item);
+      }
+
+      // overrides for totals rows
+      if (item.__groupTotals) {
+        return options.groupItemMetadataProvider.getTotalsRowMetadata(item);
+      }
+
+      return null;
+    }
+
+    function expandCollapseAllGroups(level, collapse) {
+      if (level == null) {
+        for (var i = 0; i < groupingInfos.length; i++) {
+          toggledGroupsByLevel[i] = {};
+          groupingInfos[i].collapsed = collapse;
+        }
+      } else {
+        toggledGroupsByLevel[level] = {};
+        groupingInfos[level].collapsed = collapse;
+      }
+      refresh();
+    }
+
+    /**
+     * @param level {Number} Optional level to collapse.  If not specified, applies to all levels.
+     */
+    function collapseAllGroups(level) {
+      expandCollapseAllGroups(level, true);
+    }
+
+    /**
+     * @param level {Number} Optional level to expand.  If not specified, applies to all levels.
+     */
+    function expandAllGroups(level) {
+      expandCollapseAllGroups(level, false);
+    }
+
+    function expandCollapseGroup(level, groupingKey, collapse) {
+      toggledGroupsByLevel[level][groupingKey] = groupingInfos[level].collapsed ^ collapse;
+      refresh();
+    }
+
+    /**
+     * @param varArgs Either a Slick.Group's "groupingKey" property, or a
+     *     variable argument list of grouping values denoting a unique path to the row.  For
+     *     example, calling collapseGroup('high', '10%') will collapse the '10%' subgroup of
+     *     the 'high' setGrouping.
+     */
+    function collapseGroup(varArgs) {
+      var args = Array.prototype.slice.call(arguments);
+      var arg0 = args[0];
+      if (args.length == 1 && arg0.indexOf(groupingDelimiter) != -1) {
+        expandCollapseGroup(arg0.split(groupingDelimiter).length - 1, arg0, true);
+      } else {
+        expandCollapseGroup(args.length - 1, args.join(groupingDelimiter), true);
+      }
+    }
+
+    /**
+     * @param varArgs Either a Slick.Group's "groupingKey" property, or a
+     *     variable argument list of grouping values denoting a unique path to the row.  For
+     *     example, calling expandGroup('high', '10%') will expand the '10%' subgroup of
+     *     the 'high' setGrouping.
+     */
+    function expandGroup(varArgs) {
+      var args = Array.prototype.slice.call(arguments);
+      var arg0 = args[0];
+      if (args.length == 1 && arg0.indexOf(groupingDelimiter) != -1) {
+        expandCollapseGroup(arg0.split(groupingDelimiter).length - 1, arg0, false);
+      } else {
+        expandCollapseGroup(args.length - 1, args.join(groupingDelimiter), false);
+      }
+    }
+
+    function getGroups() {
+      return groups;
+    }
+
+    function extractGroups(rows, parentGroup) {
+      var group;
+      var val;
+      var groups = [];
+      var groupsByVal = [];
+      var r;
+      var level = parentGroup ? parentGroup.level + 1 : 0;
+      var gi = groupingInfos[level];
+
+      for (var i = 0, l = gi.predefinedValues.length; i < l; i++) {
+        val = gi.predefinedValues[i];
+        group = groupsByVal[val];
+        if (!group) {
+          group = new Slick.Group();
+          group.value = val;
+          group.level = level;
+          group.groupingKey = (parentGroup ? parentGroup.groupingKey + groupingDelimiter : '') + val;
+          groups[groups.length] = group;
+          groupsByVal[val] = group;
+        }
+      }
+
+      for (var i = 0, l = rows.length; i < l; i++) {
+        r = rows[i];
+        val = gi.getterIsAFn ? gi.getter(r) : r[gi.getter];
+        group = groupsByVal[val];
+        if (!group) {
+          group = new Slick.Group();
+          group.value = val;
+          group.level = level;
+          group.groupingKey = (parentGroup ? parentGroup.groupingKey + groupingDelimiter : '') + val;
+          groups[groups.length] = group;
+          groupsByVal[val] = group;
+        }
+
+        group.rows[group.count++] = r;
+      }
+
+      if (level < groupingInfos.length - 1) {
+        for (var i = 0; i < groups.length; i++) {
+          group = groups[i];
+          group.groups = extractGroups(group.rows, group);
+        }
+      }      
+
+      groups.sort(groupingInfos[level].comparer);
+
+      return groups;
+    }
+
+    // TODO:  lazy totals calculation
+    function calculateGroupTotals(group) {
+      // TODO:  try moving iterating over groups into compiled accumulator
+      var gi = groupingInfos[group.level];
+      var isLeafLevel = (group.level == groupingInfos.length);
+      var totals = new Slick.GroupTotals();
+      var agg, idx = gi.aggregators.length;
+      while (idx--) {
+        agg = gi.aggregators[idx];
+        agg.init();
+        gi.compiledAccumulators[idx].call(agg,
+            (!isLeafLevel && gi.aggregateChildGroups) ? group.groups : group.rows);
+        agg.storeResult(totals);
+      }
+      totals.group = group;
+      group.totals = totals;
+    }
+
+    function calculateTotals(groups, level) {
+      level = level || 0;
+      var gi = groupingInfos[level];
+      var idx = groups.length, g;
+      while (idx--) {
+        g = groups[idx];
+
+        if (g.collapsed && !gi.aggregateCollapsed) {
+          continue;
+        }
+
+        // Do a depth-first aggregation so that parent setGrouping aggregators can access subgroup totals.
+        if (g.groups) {
+          calculateTotals(g.groups, level + 1);
+        }
+
+        if (gi.aggregators.length && (
+            gi.aggregateEmpty || g.rows.length || (g.groups && g.groups.length))) {
+          calculateGroupTotals(g);
+        }
+      }
+    }
+
+    function finalizeGroups(groups, level) {
+      level = level || 0;
+      var gi = groupingInfos[level];
+      var groupCollapsed = gi.collapsed;
+      var toggledGroups = toggledGroupsByLevel[level];
+      var idx = groups.length, g;
+      while (idx--) {
+        g = groups[idx];
+        g.collapsed = groupCollapsed ^ toggledGroups[g.groupingKey];
+        g.title = gi.formatter ? gi.formatter(g) : g.value;
+
+        if (g.groups) {
+          finalizeGroups(g.groups, level + 1);
+          // Let the non-leaf setGrouping rows get garbage-collected.
+          // They may have been used by aggregates that go over all of the descendants,
+          // but at this point they are no longer needed.
+          g.rows = [];
+        }
+      }
+    }
+
+    function flattenGroupedRows(groups, level) {
+      level = level || 0;
+      var gi = groupingInfos[level];
+      var groupedRows = [], rows, gl = 0, g;
+      for (var i = 0, l = groups.length; i < l; i++) {
+        g = groups[i];
+        groupedRows[gl++] = g;
+
+        if (!g.collapsed) {
+          rows = g.groups ? flattenGroupedRows(g.groups, level + 1) : g.rows;
+          for (var j = 0, jj = rows.length; j < jj; j++) {
+            groupedRows[gl++] = rows[j];
+          }
+        }
+
+        if (g.totals && gi.displayTotalsRow && (!g.collapsed || gi.aggregateCollapsed)) {
+          groupedRows[gl++] = g.totals;
+        }
+      }
+      return groupedRows;
+    }
+
+    function getFunctionInfo(fn) {
+      var fnRegex = /^function[^(]*\(([^)]*)\)\s*{([\s\S]*)}$/;
+      var matches = fn.toString().match(fnRegex);
+      return {
+        params: matches[1].split(","),
+        body: matches[2]
+      };
+    }
+
+    function compileAccumulatorLoop(aggregator) {
+      var accumulatorInfo = getFunctionInfo(aggregator.accumulate);
+      var fn = new Function(
+          "_items",
+          "for (var " + accumulatorInfo.params[0] + ", _i=0, _il=_items.length; _i<_il; _i++) {" +
+              accumulatorInfo.params[0] + " = _items[_i]; " +
+              accumulatorInfo.body +
+          "}"
+      );
+      fn.displayName = fn.name = "compiledAccumulatorLoop";
+      return fn;
+    }
+
+    function compileFilter() {
+      var filterInfo = getFunctionInfo(filter);
+
+      var filterBody = filterInfo.body
+          .replace(/return false[;}]/gi, "{ continue _coreloop; }")
+          .replace(/return true[;}]/gi, "{ _retval[_idx++] = $item$; continue _coreloop; }")
+          .replace(/return ([^;}]+?);/gi,
+          "{ if ($1) { _retval[_idx++] = $item$; }; continue _coreloop; }");
+
+      // This preserves the function template code after JS compression,
+      // so that replace() commands still work as expected.
+      var tpl = [
+        //"function(_items, _args) { ",
+        "var _retval = [], _idx = 0; ",
+        "var $item$, $args$ = _args; ",
+        "_coreloop: ",
+        "for (var _i = 0, _il = _items.length; _i < _il; _i++) { ",
+        "$item$ = _items[_i]; ",
+        "$filter$; ",
+        "} ",
+        "return _retval; "
+        //"}"
+      ].join("");
+      tpl = tpl.replace(/\$filter\$/gi, filterBody);
+      tpl = tpl.replace(/\$item\$/gi, filterInfo.params[0]);
+      tpl = tpl.replace(/\$args\$/gi, filterInfo.params[1]);
+
+      var fn = new Function("_items,_args", tpl);
+      fn.displayName = fn.name = "compiledFilter";
+      return fn;
+    }
+
+    function compileFilterWithCaching() {
+      var filterInfo = getFunctionInfo(filter);
+
+      var filterBody = filterInfo.body
+          .replace(/return false[;}]/gi, "{ continue _coreloop; }")
+          .replace(/return true[;}]/gi, "{ _cache[_i] = true;_retval[_idx++] = $item$; continue _coreloop; }")
+          .replace(/return ([^;}]+?);/gi,
+          "{ if ((_cache[_i] = $1)) { _retval[_idx++] = $item$; }; continue _coreloop; }");
+
+      // This preserves the function template code after JS compression,
+      // so that replace() commands still work as expected.
+      var tpl = [
+        //"function(_items, _args, _cache) { ",
+        "var _retval = [], _idx = 0; ",
+        "var $item$, $args$ = _args; ",
+        "_coreloop: ",
+        "for (var _i = 0, _il = _items.length; _i < _il; _i++) { ",
+        "$item$ = _items[_i]; ",
+        "if (_cache[_i]) { ",
+        "_retval[_idx++] = $item$; ",
+        "continue _coreloop; ",
+        "} ",
+        "$filter$; ",
+        "} ",
+        "return _retval; "
+        //"}"
+      ].join("");
+      tpl = tpl.replace(/\$filter\$/gi, filterBody);
+      tpl = tpl.replace(/\$item\$/gi, filterInfo.params[0]);
+      tpl = tpl.replace(/\$args\$/gi, filterInfo.params[1]);
+
+      var fn = new Function("_items,_args,_cache", tpl);
+      fn.displayName = fn.name = "compiledFilterWithCaching";
+      return fn;
+    }
+
+    function uncompiledFilter(items, args) {
+      var retval = [], idx = 0;
+
+      for (var i = 0, ii = items.length; i < ii; i++) {
+        if (filter(items[i], args)) {
+          retval[idx++] = items[i];
+        }
+      }
+
+      return retval;
+    }
+
+    function uncompiledFilterWithCaching(items, args, cache) {
+      var retval = [], idx = 0, item;
+
+      for (var i = 0, ii = items.length; i < ii; i++) {
+        item = items[i];
+        if (cache[i]) {
+          retval[idx++] = item;
+        } else if (filter(item, args)) {
+          retval[idx++] = item;
+          cache[i] = true;
+        }
+      }
+
+      return retval;
+    }
+
+    function getFilteredAndPagedItems(items) {
+      if (filter) {
+        var batchFilter = options.inlineFilters ? compiledFilter : uncompiledFilter;
+        var batchFilterWithCaching = options.inlineFilters ? compiledFilterWithCaching : uncompiledFilterWithCaching;
+
+        if (refreshHints.isFilterNarrowing) {
+          filteredItems = batchFilter(filteredItems, filterArgs);
+        } else if (refreshHints.isFilterExpanding) {
+          filteredItems = batchFilterWithCaching(items, filterArgs, filterCache);
+        } else if (!refreshHints.isFilterUnchanged) {
+          filteredItems = batchFilter(items, filterArgs);
+        }
+      } else {
+        // special case:  if not filtering and not paging, the resulting
+        // rows collection needs to be a copy so that changes due to sort
+        // can be caught
+        filteredItems = pagesize ? items : items.concat();
+      }
+
+      // get the current page
+      var paged;
+      if (pagesize) {
+        if (filteredItems.length < pagenum * pagesize) {
+          pagenum = Math.floor(filteredItems.length / pagesize);
+        }
+        paged = filteredItems.slice(pagesize * pagenum, pagesize * pagenum + pagesize);
+      } else {
+        paged = filteredItems;
+      }
+
+      return {totalRows: filteredItems.length, rows: paged};
+    }
+
+    function getRowDiffs(rows, newRows) {
+      var item, r, eitherIsNonData, diff = [];
+      var from = 0, to = newRows.length;
+
+      if (refreshHints && refreshHints.ignoreDiffsBefore) {
+        from = Math.max(0,
+            Math.min(newRows.length, refreshHints.ignoreDiffsBefore));
+      }
+
+      if (refreshHints && refreshHints.ignoreDiffsAfter) {
+        to = Math.min(newRows.length,
+            Math.max(0, refreshHints.ignoreDiffsAfter));
+      }
+
+      for (var i = from, rl = rows.length; i < to; i++) {
+        if (i >= rl) {
+          diff[diff.length] = i;
+        } else {
+          item = newRows[i];
+          r = rows[i];
+
+          if ((groupingInfos.length && (eitherIsNonData = (item.__nonDataRow) || (r.__nonDataRow)) &&
+              item.__group !== r.__group ||
+              item.__group && !item.equals(r))
+              || (eitherIsNonData &&
+              // no good way to compare totals since they are arbitrary DTOs
+              // deep object comparison is pretty expensive
+              // always considering them 'dirty' seems easier for the time being
+              (item.__groupTotals || r.__groupTotals))
+              || item[idProperty] != r[idProperty]
+              || (updated && updated[item[idProperty]])
+              ) {
+            diff[diff.length] = i;
+          }
+        }
+      }
+      return diff;
+    }
+
+    function recalc(_items) {
+      rowsById = null;
+
+      if (refreshHints.isFilterNarrowing != prevRefreshHints.isFilterNarrowing ||
+          refreshHints.isFilterExpanding != prevRefreshHints.isFilterExpanding) {
+        filterCache = [];
+      }
+
+      var filteredItems = getFilteredAndPagedItems(_items);
+      totalRows = filteredItems.totalRows;
+      var newRows = filteredItems.rows;
+
+      groups = [];
+      if (groupingInfos.length) {
+        groups = extractGroups(newRows);
+        if (groups.length) {
+          calculateTotals(groups);
+          finalizeGroups(groups);
+          newRows = flattenGroupedRows(groups);
+        }
+      }
+
+      var diff = getRowDiffs(rows, newRows);
+
+      rows = newRows;
+
+      return diff;
+    }
+
+    function refresh() {
+      if (suspend) {
+        return;
+      }
+
+      var countBefore = rows.length;
+      var totalRowsBefore = totalRows;
+
+      var diff = recalc(items, filter); // pass as direct refs to avoid closure perf hit
+
+      // if the current page is no longer valid, go to last page and recalc
+      // we suffer a performance penalty here, but the main loop (recalc) remains highly optimized
+      if (pagesize && totalRows < pagenum * pagesize) {
+        pagenum = Math.max(0, Math.ceil(totalRows / pagesize) - 1);
+        diff = recalc(items, filter);
+      }
+
+      updated = null;
+      prevRefreshHints = refreshHints;
+      refreshHints = {};
+
+      if (totalRowsBefore != totalRows) {
+        onPagingInfoChanged.notify(getPagingInfo(), null, self);
+      }
+      if (countBefore != rows.length) {
+        onRowCountChanged.notify({previous: countBefore, current: rows.length}, null, self);
+      }
+      if (diff.length > 0) {
+        onRowsChanged.notify({rows: diff}, null, self);
+      }
+    }
+
+    function syncGridSelection(grid, preserveHidden) {
+      var self = this;
+      var selectedRowIds = self.mapRowsToIds(grid.getSelectedRows());;
+      var inHandler;
+
+      function update() {
+        if (selectedRowIds.length > 0) {
+          inHandler = true;
+          var selectedRows = self.mapIdsToRows(selectedRowIds);
+          if (!preserveHidden) {
+            selectedRowIds = self.mapRowsToIds(selectedRows);
+          }
+          grid.setSelectedRows(selectedRows);
+          inHandler = false;
+        }
+      }
+
+      grid.onSelectedRowsChanged.subscribe(function(e, args) {
+        if (inHandler) { return; }
+        selectedRowIds = self.mapRowsToIds(grid.getSelectedRows());
+      });
+
+      this.onRowsChanged.subscribe(update);
+
+      this.onRowCountChanged.subscribe(update);
+    }
+
+    function syncGridCellCssStyles(grid, key) {
+      var hashById;
+      var inHandler;
+
+      // since this method can be called after the cell styles have been set,
+      // get the existing ones right away
+      storeCellCssStyles(grid.getCellCssStyles(key));
+
+      function storeCellCssStyles(hash) {
+        hashById = {};
+        for (var row in hash) {
+          var id = rows[row][idProperty];
+          hashById[id] = hash[row];
+        }
+      }
+
+      function update() {
+        if (hashById) {
+          inHandler = true;
+          ensureRowsByIdCache();
+          var newHash = {};
+          for (var id in hashById) {
+            var row = rowsById[id];
+            if (row != undefined) {
+              newHash[row] = hashById[id];
+            }
+          }
+          grid.setCellCssStyles(key, newHash);
+          inHandler = false;
+        }
+      }
+
+      grid.onCellCssStylesChanged.subscribe(function(e, args) {
+        if (inHandler) { return; }
+        if (key != args.key) { return; }
+        if (args.hash) {
+          storeCellCssStyles(args.hash);
+        }
+      });
+
+      this.onRowsChanged.subscribe(update);
+
+      this.onRowCountChanged.subscribe(update);
+    }
+
+    $.extend(this, {
+      // methods
+      "beginUpdate": beginUpdate,
+      "endUpdate": endUpdate,
+      "setPagingOptions": setPagingOptions,
+      "getPagingInfo": getPagingInfo,
+      "getItems": getItems,
+      "setItems": setItems,
+      "setFilter": setFilter,
+      "sort": sort,
+      "fastSort": fastSort,
+      "reSort": reSort,
+      "setGrouping": setGrouping,
+      "getGrouping": getGrouping,
+      "groupBy": groupBy,
+      "setAggregators": setAggregators,
+      "collapseAllGroups": collapseAllGroups,
+      "expandAllGroups": expandAllGroups,
+      "collapseGroup": collapseGroup,
+      "expandGroup": expandGroup,
+      "getGroups": getGroups,
+      "getIdxById": getIdxById,
+      "getRowById": getRowById,
+      "getItemById": getItemById,
+      "getItemByIdx": getItemByIdx,
+      "mapRowsToIds": mapRowsToIds,
+      "mapIdsToRows": mapIdsToRows,
+      "setRefreshHints": setRefreshHints,
+      "setFilterArgs": setFilterArgs,
+      "refresh": refresh,
+      "updateItem": updateItem,
+      "insertItem": insertItem,
+      "addItem": addItem,
+      "deleteItem": deleteItem,
+      "syncGridSelection": syncGridSelection,
+      "syncGridCellCssStyles": syncGridCellCssStyles,
+
+      // data provider methods
+      "getLength": getLength,
+      "getItem": getItem,
+      "getItemMetadata": getItemMetadata,
+
+      // events
+      "onRowCountChanged": onRowCountChanged,
+      "onRowsChanged": onRowsChanged,
+      "onPagingInfoChanged": onPagingInfoChanged
+    });
+  }
+
+  function AvgAggregator(field) {
+    this.field_ = field;
+
+    this.init = function () {
+      this.count_ = 0;
+      this.nonNullCount_ = 0;
+      this.sum_ = 0;
+    };
+
+    this.accumulate = function (item) {
+      var val = item[this.field_];
+      this.count_++;
+      if (val != null && val !== "" && val !== NaN) {
+        this.nonNullCount_++;
+        this.sum_ += parseFloat(val);
+      }
+    };
+
+    this.storeResult = function (groupTotals) {
+      if (!groupTotals.avg) {
+        groupTotals.avg = {};
+      }
+      if (this.nonNullCount_ != 0) {
+        groupTotals.avg[this.field_] = this.sum_ / this.nonNullCount_;
+      }
+    };
+  }
+
+  function MinAggregator(field) {
+    this.field_ = field;
+
+    this.init = function () {
+      this.min_ = null;
+    };
+
+    this.accumulate = function (item) {
+      var val = item[this.field_];
+      if (val != null && val !== "" && val !== NaN) {
+        if (this.min_ == null || val < this.min_) {
+          this.min_ = val;
+        }
+      }
+    };
+
+    this.storeResult = function (groupTotals) {
+      if (!groupTotals.min) {
+        groupTotals.min = {};
+      }
+      groupTotals.min[this.field_] = this.min_;
+    }
+  }
+
+  function MaxAggregator(field) {
+    this.field_ = field;
+
+    this.init = function () {
+      this.max_ = null;
+    };
+
+    this.accumulate = function (item) {
+      var val = item[this.field_];
+      if (val != null && val !== "" && val !== NaN) {
+        if (this.max_ == null || val > this.max_) {
+          this.max_ = val;
+        }
+      }
+    };
+
+    this.storeResult = function (groupTotals) {
+      if (!groupTotals.max) {
+        groupTotals.max = {};
+      }
+      groupTotals.max[this.field_] = this.max_;
+    }
+  }
+
+  function SumAggregator(field) {
+    this.field_ = field;
+
+    this.init = function () {
+      this.sum_ = null;
+    };
+
+    this.accumulate = function (item) {
+      var val = item[this.field_];
+      if (val != null && val !== "" && val !== NaN) {
+        this.sum_ += parseFloat(val);
+      }
+    };
+
+    this.storeResult = function (groupTotals) {
+      if (!groupTotals.sum) {
+        groupTotals.sum = {};
+      }
+      groupTotals.sum[this.field_] = this.sum_;
+    }
+  }
+
+  // TODO:  add more built-in aggregators
+  // TODO:  merge common aggregators in one to prevent needles iterating
+
+})(jQuery);

common/static/js/vendor/slick.editors.js

@@ -0,0 +1,512 @@
+/***
+ * Contains basic SlickGrid editors.
+ * @module Editors
+ * @namespace Slick
+ */
+
+(function ($) {
+  // register namespace
+  $.extend(true, window, {
+    "Slick": {
+      "Editors": {
+        "Text": TextEditor,
+        "Integer": IntegerEditor,
+        "Date": DateEditor,
+        "YesNoSelect": YesNoSelectEditor,
+        "Checkbox": CheckboxEditor,
+        "PercentComplete": PercentCompleteEditor,
+        "LongText": LongTextEditor
+      }
+    }
+  });
+
+  function TextEditor(args) {
+    var $input;
+    var defaultValue;
+    var scope = this;
+
+    this.init = function () {
+      $input = $("<INPUT type=text class='editor-text' />")
+          .appendTo(args.container)
+          .bind("keydown.nav", function (e) {
+            if (e.keyCode === $.ui.keyCode.LEFT || e.keyCode === $.ui.keyCode.RIGHT) {
+              e.stopImmediatePropagation();
+            }
+          })
+          .focus()
+          .select();
+    };
+
+    this.destroy = function () {
+      $input.remove();
+    };
+
+    this.focus = function () {
+      $input.focus();
+    };
+
+    this.getValue = function () {
+      return $input.val();
+    };
+
+    this.setValue = function (val) {
+      $input.val(val);
+    };
+
+    this.loadValue = function (item) {
+      defaultValue = item[args.column.field] || "";
+      $input.val(defaultValue);
+      $input[0].defaultValue = defaultValue;
+      $input.select();
+    };
+
+    this.serializeValue = function () {
+      return $input.val();
+    };
+
+    this.applyValue = function (item, state) {
+      item[args.column.field] = state;
+    };
+
+    this.isValueChanged = function () {
+      return (!($input.val() == "" && defaultValue == null)) && ($input.val() != defaultValue);
+    };
+
+    this.validate = function () {
+      if (args.column.validator) {
+        var validationResults = args.column.validator($input.val());
+        if (!validationResults.valid) {
+          return validationResults;
+        }
+      }
+
+      return {
+        valid: true,
+        msg: null
+      };
+    };
+
+    this.init();
+  }
+
+  function IntegerEditor(args) {
+    var $input;
+    var defaultValue;
+    var scope = this;
+
+    this.init = function () {
+      $input = $("<INPUT type=text class='editor-text' />");
+
+      $input.bind("keydown.nav", function (e) {
+        if (e.keyCode === $.ui.keyCode.LEFT || e.keyCode === $.ui.keyCode.RIGHT) {
+          e.stopImmediatePropagation();
+        }
+      });
+
+      $input.appendTo(args.container);
+      $input.focus().select();
+    };
+
+    this.destroy = function () {
+      $input.remove();
+    };
+
+    this.focus = function () {
+      $input.focus();
+    };
+
+    this.loadValue = function (item) {
+      defaultValue = item[args.column.field];
+      $input.val(defaultValue);
+      $input[0].defaultValue = defaultValue;
+      $input.select();
+    };
+
+    this.serializeValue = function () {
+      return parseInt($input.val(), 10) || 0;
+    };
+
+    this.applyValue = function (item, state) {
+      item[args.column.field] = state;
+    };
+
+    this.isValueChanged = function () {
+      return (!($input.val() == "" && defaultValue == null)) && ($input.val() != defaultValue);
+    };
+
+    this.validate = function () {
+      if (isNaN($input.val())) {
+        return {
+          valid: false,
+          msg: "Please enter a valid integer"
+        };
+      }
+
+      return {
+        valid: true,
+        msg: null
+      };
+    };
+
+    this.init();
+  }
+
+  function DateEditor(args) {
+    var $input;
+    var defaultValue;
+    var scope = this;
+    var calendarOpen = false;
+
+    this.init = function () {
+      $input = $("<INPUT type=text class='editor-text' />");
+      $input.appendTo(args.container);
+      $input.focus().select();
+      $input.datepicker({
+        showOn: "button",
+        buttonImageOnly: true,
+        buttonImage: "../images/calendar.gif",
+        beforeShow: function () {
+          calendarOpen = true
+        },
+        onClose: function () {
+          calendarOpen = false
+        }
+      });
+      $input.width($input.width() - 18);
+    };
+
+    this.destroy = function () {
+      $.datepicker.dpDiv.stop(true, true);
+      $input.datepicker("hide");
+      $input.datepicker("destroy");
+      $input.remove();
+    };
+
+    this.show = function () {
+      if (calendarOpen) {
+        $.datepicker.dpDiv.stop(true, true).show();
+      }
+    };
+
+    this.hide = function () {
+      if (calendarOpen) {
+        $.datepicker.dpDiv.stop(true, true).hide();
+      }
+    };
+
+    this.position = function (position) {
+      if (!calendarOpen) {
+        return;
+      }
+      $.datepicker.dpDiv
+          .css("top", position.top + 30)
+          .css("left", position.left);
+    };
+
+    this.focus = function () {
+      $input.focus();
+    };
+
+    this.loadValue = function (item) {
+      defaultValue = item[args.column.field];
+      $input.val(defaultValue);
+      $input[0].defaultValue = defaultValue;
+      $input.select();
+    };
+
+    this.serializeValue = function () {
+      return $input.val();
+    };
+
+    this.applyValue = function (item, state) {
+      item[args.column.field] = state;
+    };
+
+    this.isValueChanged = function () {
+      return (!($input.val() == "" && defaultValue == null)) && ($input.val() != defaultValue);
+    };
+
+    this.validate = function () {
+      return {
+        valid: true,
+        msg: null
+      };
+    };
+
+    this.init();
+  }
+
+  function YesNoSelectEditor(args) {
+    var $select;
+    var defaultValue;
+    var scope = this;
+
+    this.init = function () {
+      $select = $("<SELECT tabIndex='0' class='editor-yesno'><OPTION value='yes'>Yes</OPTION><OPTION value='no'>No</OPTION></SELECT>");
+      $select.appendTo(args.container);
+      $select.focus();
+    };
+
+    this.destroy = function () {
+      $select.remove();
+    };
+
+    this.focus = function () {
+      $select.focus();
+    };
+
+    this.loadValue = function (item) {
+      $select.val((defaultValue = item[args.column.field]) ? "yes" : "no");
+      $select.select();
+    };
+
+    this.serializeValue = function () {
+      return ($select.val() == "yes");
+    };
+
+    this.applyValue = function (item, state) {
+      item[args.column.field] = state;
+    };
+
+    this.isValueChanged = function () {
+      return ($select.val() != defaultValue);
+    };
+
+    this.validate = function () {
+      return {
+        valid: true,
+        msg: null
+      };
+    };
+
+    this.init();
+  }
+
+  function CheckboxEditor(args) {
+    var $select;
+    var defaultValue;
+    var scope = this;
+
+    this.init = function () {
+      $select = $("<INPUT type=checkbox value='true' class='editor-checkbox' hideFocus>");
+      $select.appendTo(args.container);
+      $select.focus();
+    };
+
+    this.destroy = function () {
+      $select.remove();
+    };
+
+    this.focus = function () {
+      $select.focus();
+    };
+
+    this.loadValue = function (item) {
+      defaultValue = !!item[args.column.field];
+      if (defaultValue) {
+        $select.attr("checked", "checked");
+      } else {
+        $select.removeAttr("checked");
+      }
+    };
+
+    this.serializeValue = function () {
+      return !!$select.attr("checked");
+    };
+
+    this.applyValue = function (item, state) {
+      item[args.column.field] = state;
+    };
+
+    this.isValueChanged = function () {
+      return (this.serializeValue() !== defaultValue);
+    };
+
+    this.validate = function () {
+      return {
+        valid: true,
+        msg: null
+      };
+    };
+
+    this.init();
+  }
+
+  function PercentCompleteEditor(args) {
+    var $input, $picker;
+    var defaultValue;
+    var scope = this;
+
+    this.init = function () {
+      $input = $("<INPUT type=text class='editor-percentcomplete' />");
+      $input.width($(args.container).innerWidth() - 25);
+      $input.appendTo(args.container);
+
+      $picker = $("<div class='editor-percentcomplete-picker' />").appendTo(args.container);
+      $picker.append("<div class='editor-percentcomplete-helper'><div class='editor-percentcomplete-wrapper'><div class='editor-percentcomplete-slider' /><div class='editor-percentcomplete-buttons' /></div></div>");
+
+      $picker.find(".editor-percentcomplete-buttons").append("<button val=0>Not started</button><br/><button val=50>In Progress</button><br/><button val=100>Complete</button>");
+
+      $input.focus().select();
+
+      $picker.find(".editor-percentcomplete-slider").slider({
+        orientation: "vertical",
+        range: "min",
+        value: defaultValue,
+        slide: function (event, ui) {
+          $input.val(ui.value)
+        }
+      });
+
+      $picker.find(".editor-percentcomplete-buttons button").bind("click", function (e) {
+        $input.val($(this).attr("val"));
+        $picker.find(".editor-percentcomplete-slider").slider("value", $(this).attr("val"));
+      })
+    };
+
+    this.destroy = function () {
+      $input.remove();
+      $picker.remove();
+    };
+
+    this.focus = function () {
+      $input.focus();
+    };
+
+    this.loadValue = function (item) {
+      $input.val(defaultValue = item[args.column.field]);
+      $input.select();
+    };
+
+    this.serializeValue = function () {
+      return parseInt($input.val(), 10) || 0;
+    };
+
+    this.applyValue = function (item, state) {
+      item[args.column.field] = state;
+    };
+
+    this.isValueChanged = function () {
+      return (!($input.val() == "" && defaultValue == null)) && ((parseInt($input.val(), 10) || 0) != defaultValue);
+    };
+
+    this.validate = function () {
+      if (isNaN(parseInt($input.val(), 10))) {
+        return {
+          valid: false,
+          msg: "Please enter a valid positive number"
+        };
+      }
+
+      return {
+        valid: true,
+        msg: null
+      };
+    };
+
+    this.init();
+  }
+
+  /*
+   * An example of a "detached" editor.
+   * The UI is added onto document BODY and .position(), .show() and .hide() are implemented.
+   * KeyDown events are also handled to provide handling for Tab, Shift-Tab, Esc and Ctrl-Enter.
+   */
+  function LongTextEditor(args) {
+    var $input, $wrapper;
+    var defaultValue;
+    var scope = this;
+
+    this.init = function () {
+      var $container = $("body");
+
+      $wrapper = $("<DIV style='z-index:10000;position:absolute;background:white;padding:5px;border:3px solid gray; -moz-border-radius:10px; border-radius:10px;'/>")
+          .appendTo($container);
+
+      $input = $("<TEXTAREA hidefocus rows=5 style='backround:white;width:250px;height:80px;border:0;outline:0'>")
+          .appendTo($wrapper);
+
+      $("<DIV style='text-align:right'><BUTTON>Save</BUTTON><BUTTON>Cancel</BUTTON></DIV>")
+          .appendTo($wrapper);
+
+      $wrapper.find("button:first").bind("click", this.save);
+      $wrapper.find("button:last").bind("click", this.cancel);
+      $input.bind("keydown", this.handleKeyDown);
+
+      scope.position(args.position);
+      $input.focus().select();
+    };
+
+    this.handleKeyDown = function (e) {
+      if (e.which == $.ui.keyCode.ENTER && e.ctrlKey) {
+        scope.save();
+      } else if (e.which == $.ui.keyCode.ESCAPE) {
+        e.preventDefault();
+        scope.cancel();
+      } else if (e.which == $.ui.keyCode.TAB && e.shiftKey) {
+        e.preventDefault();
+        args.grid.navigatePrev();
+      } else if (e.which == $.ui.keyCode.TAB) {
+        e.preventDefault();
+        args.grid.navigateNext();
+      }
+    };
+
+    this.save = function () {
+      args.commitChanges();
+    };
+
+    this.cancel = function () {
+      $input.val(defaultValue);
+      args.cancelChanges();
+    };
+
+    this.hide = function () {
+      $wrapper.hide();
+    };
+
+    this.show = function () {
+      $wrapper.show();
+    };
+
+    this.position = function (position) {
+      $wrapper
+          .css("top", position.top - 5)
+          .css("left", position.left - 5)
+    };
+
+    this.destroy = function () {
+      $wrapper.remove();
+    };
+
+    this.focus = function () {
+      $input.focus();
+    };
+
+    this.loadValue = function (item) {
+      $input.val(defaultValue = item[args.column.field]);
+      $input.select();
+    };
+
+    this.serializeValue = function () {
+      return $input.val();
+    };
+
+    this.applyValue = function (item, state) {
+      item[args.column.field] = state;
+    };
+
+    this.isValueChanged = function () {
+      return (!($input.val() == "" && defaultValue == null)) && ($input.val() != defaultValue);
+    };
+
+    this.validate = function () {
+      return {
+        valid: true,
+        msg: null
+      };
+    };
+
+    this.init();
+  }
+})(jQuery);

common/static/js/vendor/slick.formatters.js

@@ -0,0 +1,59 @@
+/***
+ * Contains basic SlickGrid formatters.
+ * 
+ * NOTE:  These are merely examples.  You will most likely need to implement something more
+ *        robust/extensible/localizable/etc. for your use!
+ * 
+ * @module Formatters
+ * @namespace Slick
+ */
+
+(function ($) {
+  // register namespace
+  $.extend(true, window, {
+    "Slick": {
+      "Formatters": {
+        "PercentComplete": PercentCompleteFormatter,
+        "PercentCompleteBar": PercentCompleteBarFormatter,
+        "YesNo": YesNoFormatter,
+        "Checkmark": CheckmarkFormatter
+      }
+    }
+  });
+
+  function PercentCompleteFormatter(row, cell, value, columnDef, dataContext) {
+    if (value == null || value === "") {
+      return "-";
+    } else if (value < 50) {
+      return "<span style='color:red;font-weight:bold;'>" + value + "%</span>";
+    } else {
+      return "<span style='color:green'>" + value + "%</span>";
+    }
+  }
+
+  function PercentCompleteBarFormatter(row, cell, value, columnDef, dataContext) {
+    if (value == null || value === "") {
+      return "";
+    }
+
+    var color;
+
+    if (value < 30) {
+      color = "red";
+    } else if (value < 70) {
+      color = "silver";
+    } else {
+      color = "green";
+    }
+
+    return "<span class='percent-complete-bar' style='background:" + color + ";width:" + value + "%'></span>";
+  }
+
+  function YesNoFormatter(row, cell, value, columnDef, dataContext) {
+    return value ? "Yes" : "No";
+  }
+
+  function CheckmarkFormatter(row, cell, value, columnDef, dataContext) {
+    return value ? "<img src='../images/tick.png'>" : "";
+  }
+})(jQuery);

common/static/js/vendor/slick.grid.js

@@ -0,0 +1,3306 @@
+/**
+ * @license
+ * (c) 2009-2012 Michael Leibman
+ * michael{dot}leibman{at}gmail{dot}com
+ * http://github.com/mleibman/slickgrid
+ *
+ * Distributed under MIT license.
+ * All rights reserved.
+ *
+ * SlickGrid v2.1
+ *
+ * NOTES:
+ *     Cell/row DOM manipulations are done directly bypassing jQuery's DOM manipulation methods.
+ *     This increases the speed dramatically, but can only be done safely because there are no event handlers
+ *     or data associated with any cell/row DOM nodes.  Cell editors must make sure they implement .destroy()
+ *     and do proper cleanup.
+ */
+
+// make sure required JavaScript modules are loaded
+if (typeof jQuery === "undefined") {
+  throw "SlickGrid requires jquery module to be loaded";
+}
+if (!jQuery.fn.drag) {
+  throw "SlickGrid requires jquery.event.drag module to be loaded";
+}
+if (typeof Slick === "undefined") {
+  throw "slick.core.js not loaded";
+}
+
+
+(function ($) {
+  // Slick.Grid
+  $.extend(true, window, {
+    Slick: {
+      Grid: SlickGrid
+    }
+  });
+
+  // shared across all grids on the page
+  var scrollbarDimensions;
+  var maxSupportedCssHeight;  // browser's breaking point
+
+  //////////////////////////////////////////////////////////////////////////////////////////////
+  // SlickGrid class implementation (available as Slick.Grid)
+
+  /**
+   * Creates a new instance of the grid.
+   * @class SlickGrid
+   * @constructor
+   * @param {Node}              container   Container node to create the grid in.
+   * @param {Array,Object}      data        An array of objects for databinding.
+   * @param {Array}             columns     An array of column definitions.
+   * @param {Object}            options     Grid options.
+   **/
+  function SlickGrid(container, data, columns, options) {
+    // settings
+    var defaults = {
+      explicitInitialization: false,
+      rowHeight: 25,
+      defaultColumnWidth: 80,
+      enableAddRow: false,
+      leaveSpaceForNewRows: false,
+      editable: false,
+      autoEdit: true,
+      enableCellNavigation: true,
+      enableColumnReorder: true,
+      asyncEditorLoading: false,
+      asyncEditorLoadDelay: 100,
+      forceFitColumns: false,
+      enableAsyncPostRender: false,
+      asyncPostRenderDelay: 50,
+      autoHeight: false,
+      editorLock: Slick.GlobalEditorLock,
+      showHeaderRow: false,
+      headerRowHeight: 25,
+      showTopPanel: false,
+      topPanelHeight: 25,
+      formatterFactory: null,
+      editorFactory: null,
+      cellFlashingCssClass: "flashing",
+      selectedCellCssClass: "selected",
+      multiSelect: true,
+      enableTextSelectionOnCells: false,
+      dataItemColumnValueExtractor: null,
+      fullWidthRows: false,
+      multiColumnSort: false,
+      defaultFormatter: defaultFormatter,
+      forceSyncScrolling: false
+    };
+
+    var columnDefaults = {
+      name: "",
+      resizable: true,
+      sortable: false,
+      minWidth: 30,
+      rerenderOnResize: false,
+      headerCssClass: null,
+      defaultSortAsc: true,
+      focusable: true,
+      selectable: true
+    };
+
+    // scroller
+    var th;   // virtual height
+    var h;    // real scrollable height
+    var ph;   // page height
+    var n;    // number of pages
+    var cj;   // "jumpiness" coefficient
+
+    var page = 0;       // current page
+    var offset = 0;     // current page offset
+    var vScrollDir = 1;
+
+    // private
+    var initialized = false;
+    var $container;
+    var uid = "slickgrid_" + Math.round(1000000 * Math.random());
+    var self = this;
+    var $focusSink, $focusSink2;
+    var $headerScroller;
+    var $headers;
+    var $headerRow, $headerRowScroller, $headerRowSpacer;
+    var $topPanelScroller;
+    var $topPanel;
+    var $viewport;
+    var $canvas;
+    var $style;
+    var $boundAncestors;
+    var stylesheet, columnCssRulesL, columnCssRulesR;
+    var viewportH, viewportW;
+    var canvasWidth;
+    var viewportHasHScroll, viewportHasVScroll;
+    var headerColumnWidthDiff = 0, headerColumnHeightDiff = 0, // border+padding
+        cellWidthDiff = 0, cellHeightDiff = 0;
+    var absoluteColumnMinWidth;
+    var numberOfRows = 0;
+
+    var tabbingDirection = 1;
+    var activePosX;
+    var activeRow, activeCell;
+    var activeCellNode = null;
+    var currentEditor = null;
+    var serializedEditorValue;
+    var editController;
+
+    var rowsCache = {};
+    var renderedRows = 0;
+    var numVisibleRows;
+    var prevScrollTop = 0;
+    var scrollTop = 0;
+    var lastRenderedScrollTop = 0;
+    var lastRenderedScrollLeft = 0;
+    var prevScrollLeft = 0;
+    var scrollLeft = 0;
+
+    var selectionModel;
+    var selectedRows = [];
+
+    var plugins = [];
+    var cellCssClasses = {};
+
+    var columnsById = {};
+    var sortColumns = [];
+    var columnPosLeft = [];
+    var columnPosRight = [];
+
+
+    // async call handles
+    var h_editorLoader = null;
+    var h_render = null;
+    var h_postrender = null;
+    var postProcessedRows = {};
+    var postProcessToRow = null;
+    var postProcessFromRow = null;
+
+    // perf counters
+    var counter_rows_rendered = 0;
+    var counter_rows_removed = 0;
+
+
+    //////////////////////////////////////////////////////////////////////////////////////////////
+    // Initialization
+
+    function init() {
+      $container = $(container);
+      if ($container.length < 1) {
+        throw new Error("SlickGrid requires a valid container, " + container + " does not exist in the DOM.");
+      }
+
+      // calculate these only once and share between grid instances
+      maxSupportedCssHeight = maxSupportedCssHeight || getMaxSupportedCssHeight();
+      scrollbarDimensions = scrollbarDimensions || measureScrollbar();
+
+      options = $.extend({}, defaults, options);
+      validateAndEnforceOptions();
+      columnDefaults.width = options.defaultColumnWidth;
+
+      columnsById = {};
+      for (var i = 0; i < columns.length; i++) {
+        var m = columns[i] = $.extend({}, columnDefaults, columns[i]);
+        columnsById[m.id] = i;
+        if (m.minWidth && m.width < m.minWidth) {
+          m.width = m.minWidth;
+        }
+        if (m.maxWidth && m.width > m.maxWidth) {
+          m.width = m.maxWidth;
+        }
+      }
+
+      // validate loaded JavaScript modules against requested options
+      if (options.enableColumnReorder && !$.fn.sortable) {
+        throw new Error("SlickGrid's 'enableColumnReorder = true' option requires jquery-ui.sortable module to be loaded");
+      }
+
+      editController = {
+        "commitCurrentEdit": commitCurrentEdit,
+        "cancelCurrentEdit": cancelCurrentEdit
+      };
+
+      $container
+          .empty()
+          .css("overflow", "hidden")
+          .css("outline", 0)
+          .addClass(uid)
+          .addClass("ui-widget");
+
+      // set up a positioning container if needed
+      if (!/relative|absolute|fixed/.test($container.css("position"))) {
+        $container.css("position", "relative");
+      }
+
+      $focusSink = $("<div tabIndex='0' hideFocus style='position:fixed;width:0;height:0;top:0;left:0;outline:0;'></div>").appendTo($container);
+
+      $headerScroller = $("<div class='slick-header ui-state-default' style='overflow:hidden;position:relative;' />").appendTo($container);
+      $headers = $("<div class='slick-header-columns' style='left:-1000px' />").appendTo($headerScroller);
+      $headers.width(getHeadersWidth());
+
+      $headerRowScroller = $("<div class='slick-headerrow ui-state-default' style='overflow:hidden;position:relative;' />").appendTo($container);
+      $headerRow = $("<div class='slick-headerrow-columns' />").appendTo($headerRowScroller);
+      $headerRowSpacer = $("<div style='display:block;height:1px;position:absolute;top:0;left:0;'></div>")
+          .css("width", getCanvasWidth() + scrollbarDimensions.width + "px")
+          .appendTo($headerRowScroller);
+
+      $topPanelScroller = $("<div class='slick-top-panel-scroller ui-state-default' style='overflow:hidden;position:relative;' />").appendTo($container);
+      $topPanel = $("<div class='slick-top-panel' style='width:10000px' />").appendTo($topPanelScroller);
+
+      if (!options.showTopPanel) {
+        $topPanelScroller.hide();
+      }
+
+      if (!options.showHeaderRow) {
+        $headerRowScroller.hide();
+      }
+
+      $viewport = $("<div class='slick-viewport' style='width:100%;overflow:auto;outline:0;position:relative;;'>").appendTo($container);
+      $viewport.css("overflow-y", options.autoHeight ? "hidden" : "auto");
+
+      $canvas = $("<div class='grid-canvas' />").appendTo($viewport);
+
+      $focusSink2 = $focusSink.clone().appendTo($container);
+
+      if (!options.explicitInitialization) {
+        finishInitialization();
+      }
+    }
+
+    function finishInitialization() {
+      if (!initialized) {
+        initialized = true;
+
+        viewportW = parseFloat($.css($container[0], "width", true));
+
+        // header columns and cells may have different padding/border skewing width calculations (box-sizing, hello?)
+        // calculate the diff so we can set consistent sizes
+        measureCellPaddingAndBorder();
+
+        // for usability reasons, all text selection in SlickGrid is disabled
+        // with the exception of input and textarea elements (selection must
+        // be enabled there so that editors work as expected); note that
+        // selection in grid cells (grid body) is already unavailable in
+        // all browsers except IE
+        disableSelection($headers); // disable all text selection in header (including input and textarea)
+
+        if (!options.enableTextSelectionOnCells) {
+          // disable text selection in grid cells except in input and textarea elements
+          // (this is IE-specific, because selectstart event will only fire in IE)
+          $viewport.bind("selectstart.ui", function (event) {
+            return $(event.target).is("input,textarea");
+          });
+        }
+
+        updateColumnCaches();
+        createColumnHeaders();
+        setupColumnSort();
+        createCssRules();
+        resizeCanvas();
+        bindAncestorScrollEvents();
+
+        $container
+            .bind("resize.slickgrid", resizeCanvas);
+        $viewport
+            .bind("scroll", handleScroll);
+        $headerScroller
+            .bind("contextmenu", handleHeaderContextMenu)
+            .bind("click", handleHeaderClick)
+            .delegate(".slick-header-column", "mouseenter", handleHeaderMouseEnter)
+            .delegate(".slick-header-column", "mouseleave", handleHeaderMouseLeave);
+        $headerRowScroller
+            .bind("scroll", handleHeaderRowScroll);
+        $focusSink.add($focusSink2)
+            .bind("keydown", handleKeyDown);
+        $canvas
+            .bind("keydown", handleKeyDown)
+            .bind("click", handleClick)
+            .bind("dblclick", handleDblClick)
+            .bind("contextmenu", handleContextMenu)
+            .bind("draginit", handleDragInit)
+            .bind("dragstart", {distance: 3}, handleDragStart)
+            .bind("drag", handleDrag)
+            .bind("dragend", handleDragEnd)
+            .delegate(".slick-cell", "mouseenter", handleMouseEnter)
+            .delegate(".slick-cell", "mouseleave", handleMouseLeave);
+      }
+    }
+
+    function registerPlugin(plugin) {
+      plugins.unshift(plugin);
+      plugin.init(self);
+    }
+
+    function unregisterPlugin(plugin) {
+      for (var i = plugins.length; i >= 0; i--) {
+        if (plugins[i] === plugin) {
+          if (plugins[i].destroy) {
+            plugins[i].destroy();
+          }
+          plugins.splice(i, 1);
+          break;
+        }
+      }
+    }
+
+    function setSelectionModel(model) {
+      if (selectionModel) {
+        selectionModel.onSelectedRangesChanged.unsubscribe(handleSelectedRangesChanged);
+        if (selectionModel.destroy) {
+          selectionModel.destroy();
+        }
+      }
+
+      selectionModel = model;
+      if (selectionModel) {
+        selectionModel.init(self);
+        selectionModel.onSelectedRangesChanged.subscribe(handleSelectedRangesChanged);
+      }
+    }
+
+    function getSelectionModel() {
+      return selectionModel;
+    }
+
+    function getCanvasNode() {
+      return $canvas[0];
+    }
+
+    function measureScrollbar() {
+      var $c = $("<div style='position:absolute; top:-10000px; left:-10000px; width:100px; height:100px; overflow:scroll;'></div>").appendTo("body");
+      var dim = {
+        width: $c.width() - $c[0].clientWidth,
+        height: $c.height() - $c[0].clientHeight
+      };
+      $c.remove();
+      return dim;
+    }
+
+    function getHeadersWidth() {
+      var headersWidth = 0;
+      for (var i = 0, ii = columns.length; i < ii; i++) {
+        var width = columns[i].width;
+        headersWidth += width;
+      }
+      headersWidth += scrollbarDimensions.width;
+      return Math.max(headersWidth, viewportW) + 1000;
+    }
+
+    function getCanvasWidth() {
+      var availableWidth = viewportHasVScroll ? viewportW - scrollbarDimensions.width : viewportW;
+      var rowWidth = 0;
+      var i = columns.length;
+      while (i--) {
+        rowWidth += columns[i].width;
+      }
+      return options.fullWidthRows ? Math.max(rowWidth, availableWidth) : rowWidth;
+    }
+
+    function updateCanvasWidth(forceColumnWidthsUpdate) {
+      var oldCanvasWidth = canvasWidth;
+      canvasWidth = getCanvasWidth();
+
+      if (canvasWidth != oldCanvasWidth) {
+        $canvas.width(canvasWidth);
+        $headerRow.width(canvasWidth);
+        $headers.width(getHeadersWidth());
+        viewportHasHScroll = (canvasWidth > viewportW - scrollbarDimensions.width);
+      }
+
+      $headerRowSpacer.width(canvasWidth + (viewportHasVScroll ? scrollbarDimensions.width : 0));
+
+      if (canvasWidth != oldCanvasWidth || forceColumnWidthsUpdate) {
+        applyColumnWidths();
+      }
+    }
+
+    function disableSelection($target) {
+      if ($target && $target.jquery) {
+        $target
+            .attr("unselectable", "on")
+            .css("MozUserSelect", "none")
+            .bind("selectstart.ui", function () {
+              return false;
+            }); // from jquery:ui.core.js 1.7.2
+      }
+    }
+
+    function getMaxSupportedCssHeight() {
+      var supportedHeight = 1000000;
+      // FF reports the height back but still renders blank after ~6M px
+      var testUpTo = navigator.userAgent.toLowerCase().match(/firefox/) ? 6000000 : 1000000000;
+      var div = $("<div style='display:none' />").appendTo(document.body);
+
+      while (true) {
+        var test = supportedHeight * 2;
+        div.css("height", test);
+        if (test > testUpTo || div.height() !== test) {
+          break;
+        } else {
+          supportedHeight = test;
+        }
+      }
+
+      div.remove();
+      return supportedHeight;
+    }
+
+    // TODO:  this is static.  need to handle page mutation.
+    function bindAncestorScrollEvents() {
+      var elem = $canvas[0];
+      while ((elem = elem.parentNode) != document.body && elem != null) {
+        // bind to scroll containers only
+        if (elem == $viewport[0] || elem.scrollWidth != elem.clientWidth || elem.scrollHeight != elem.clientHeight) {
+          var $elem = $(elem);
+          if (!$boundAncestors) {
+            $boundAncestors = $elem;
+          } else {
+            $boundAncestors = $boundAncestors.add($elem);
+          }
+          $elem.bind("scroll." + uid, handleActiveCellPositionChange);
+        }
+      }
+    }
+
+    function unbindAncestorScrollEvents() {
+      if (!$boundAncestors) {
+        return;
+      }
+      $boundAncestors.unbind("scroll." + uid);
+      $boundAncestors = null;
+    }
+
+    function updateColumnHeader(columnId, title, toolTip) {
+      if (!initialized) { return; }
+      var idx = getColumnIndex(columnId);
+      if (idx == null) {
+        return;
+      }
+
+      var columnDef = columns[idx];
+      var $header = $headers.children().eq(idx);
+      if ($header) {
+        if (title !== undefined) {
+          columns[idx].name = title;
+        }
+        if (toolTip !== undefined) {
+          columns[idx].toolTip = toolTip;
+        }
+
+        trigger(self.onBeforeHeaderCellDestroy, {
+          "node": $header[0],
+          "column": columnDef
+        });
+
+        $header
+            .attr("title", toolTip || "")
+            .children().eq(0).html(title);
+
+        trigger(self.onHeaderCellRendered, {
+          "node": $header[0],
+          "column": columnDef
+        });
+      }
+    }
+
+    function getHeaderRow() {
+      return $headerRow[0];
+    }
+
+    function getHeaderRowColumn(columnId) {
+      var idx = getColumnIndex(columnId);
+      var $header = $headerRow.children().eq(idx);
+      return $header && $header[0];
+    }
+
+    function createColumnHeaders() {
+      function onMouseEnter() {
+        $(this).addClass("ui-state-hover");
+      }
+
+      function onMouseLeave() {
+        $(this).removeClass("ui-state-hover");
+      }
+
+      $headers.find(".slick-header-column")
+        .each(function() {
+          var columnDef = $(this).data("column");
+          if (columnDef) {
+            trigger(self.onBeforeHeaderCellDestroy, {
+              "node": this,
+              "column": columnDef
+            });
+          }
+        });
+      $headers.empty();
+      $headers.width(getHeadersWidth());
+
+      $headerRow.find(".slick-headerrow-column")
+        .each(function() {
+          var columnDef = $(this).data("column");
+          if (columnDef) {
+            trigger(self.onBeforeHeaderRowCellDestroy, {
+              "node": this,
+              "column": columnDef
+            });
+          }
+        });
+      $headerRow.empty();
+
+      for (var i = 0; i < columns.length; i++) {
+        var m = columns[i];
+
+        var header = $("<div class='ui-state-default slick-header-column' />")
+            .html("<span class='slick-column-name'>" + m.name + "</span>")
+            .width(m.width - headerColumnWidthDiff)
+            .attr("id", "" + uid + m.id)
+            .attr("title", m.toolTip || "")
+            .data("column", m)
+            .addClass(m.headerCssClass || "")
+            .appendTo($headers);
+
+        if (options.enableColumnReorder || m.sortable) {
+          header
+            .on('mouseenter', onMouseEnter)
+            .on('mouseleave', onMouseLeave);
+        }
+
+        if (m.sortable) {
+          header.addClass("slick-header-sortable");
+          header.append("<span class='slick-sort-indicator' />");
+        }
+
+        trigger(self.onHeaderCellRendered, {
+          "node": header[0],
+          "column": m
+        });
+
+        if (options.showHeaderRow) {
+          var headerRowCell = $("<div class='ui-state-default slick-headerrow-column l" + i + " r" + i + "'></div>")
+              .data("column", m)
+              .appendTo($headerRow);
+
+          trigger(self.onHeaderRowCellRendered, {
+            "node": headerRowCell[0],
+            "column": m
+          });
+        }
+      }
+
+      setSortColumns(sortColumns);
+      setupColumnResize();
+      if (options.enableColumnReorder) {
+        setupColumnReorder();
+      }
+    }
+
+    function setupColumnSort() {
+      $headers.click(function (e) {
+        // temporary workaround for a bug in jQuery 1.7.1 (http://bugs.jquery.com/ticket/11328)
+        e.metaKey = e.metaKey || e.ctrlKey;
+
+        if ($(e.target).hasClass("slick-resizable-handle")) {
+          return;
+        }
+
+        var $col = $(e.target).closest(".slick-header-column");
+        if (!$col.length) {
+          return;
+        }
+
+        var column = $col.data("column");
+        if (column.sortable) {
+          if (!getEditorLock().commitCurrentEdit()) {
+            return;
+          }
+
+          var sortOpts = null;
+          var i = 0;
+          for (; i < sortColumns.length; i++) {
+            if (sortColumns[i].columnId == column.id) {
+              sortOpts = sortColumns[i];
+              sortOpts.sortAsc = !sortOpts.sortAsc;
+              break;
+            }
+          }
+
+          if (e.metaKey && options.multiColumnSort) {
+            if (sortOpts) {
+              sortColumns.splice(i, 1);
+            }
+          }
+          else {
+            if ((!e.shiftKey && !e.metaKey) || !options.multiColumnSort) {
+              sortColumns = [];
+            }
+
+            if (!sortOpts) {
+              sortOpts = { columnId: column.id, sortAsc: column.defaultSortAsc };
+              sortColumns.push(sortOpts);
+            } else if (sortColumns.length == 0) {
+              sortColumns.push(sortOpts);
+            }
+          }
+
+          setSortColumns(sortColumns);
+
+          if (!options.multiColumnSort) {
+            trigger(self.onSort, {
+              multiColumnSort: false,
+              sortCol: column,
+              sortAsc: sortOpts.sortAsc}, e);
+          } else {
+            trigger(self.onSort, {
+              multiColumnSort: true,
+              sortCols: $.map(sortColumns, function(col) {
+                return {sortCol: columns[getColumnIndex(col.columnId)], sortAsc: col.sortAsc };
+              })}, e);
+          }
+        }
+      });
+    }
+
+    function setupColumnReorder() {
+      $headers.filter(":ui-sortable").sortable("destroy");
+      $headers.sortable({
+        containment: "parent",
+        distance: 3,
+        axis: "x",
+        cursor: "default",
+        tolerance: "intersection",
+        helper: "clone",
+        placeholder: "slick-sortable-placeholder ui-state-default slick-header-column",
+        forcePlaceholderSize: true,
+        start: function (e, ui) {
+          $(ui.helper).addClass("slick-header-column-active");
+        },
+        beforeStop: function (e, ui) {
+          $(ui.helper).removeClass("slick-header-column-active");
+        },
+        stop: function (e) {
+          if (!getEditorLock().commitCurrentEdit()) {
+            $(this).sortable("cancel");
+            return;
+          }
+
+          var reorderedIds = $headers.sortable("toArray");
+          var reorderedColumns = [];
+          for (var i = 0; i < reorderedIds.length; i++) {
+            reorderedColumns.push(columns[getColumnIndex(reorderedIds[i].replace(uid, ""))]);
+          }
+          setColumns(reorderedColumns);
+
+          trigger(self.onColumnsReordered, {});
+          e.stopPropagation();
+          setupColumnResize();
+        }
+      });
+    }
+
+    function setupColumnResize() {
+      var $col, j, c, pageX, columnElements, minPageX, maxPageX, firstResizable, lastResizable;
+      columnElements = $headers.children();
+      columnElements.find(".slick-resizable-handle").remove();
+      columnElements.each(function (i, e) {
+        if (columns[i].resizable) {
+          if (firstResizable === undefined) {
+            firstResizable = i;
+          }
+          lastResizable = i;
+        }
+      });
+      if (firstResizable === undefined) {
+        return;
+      }
+      columnElements.each(function (i, e) {
+        if (i < firstResizable || (options.forceFitColumns && i >= lastResizable)) {
+          return;
+        }
+        $col = $(e);
+        $("<div class='slick-resizable-handle' />")
+            .appendTo(e)
+            .bind("dragstart", function (e, dd) {
+              if (!getEditorLock().commitCurrentEdit()) {
+                return false;
+              }
+              pageX = e.pageX;
+              $(this).parent().addClass("slick-header-column-active");
+              var shrinkLeewayOnRight = null, stretchLeewayOnRight = null;
+              // lock each column's width option to current width
+              columnElements.each(function (i, e) {
+                columns[i].previousWidth = $(e).outerWidth();
+              });
+              if (options.forceFitColumns) {
+                shrinkLeewayOnRight = 0;
+                stretchLeewayOnRight = 0;
+                // colums on right affect maxPageX/minPageX
+                for (j = i + 1; j < columnElements.length; j++) {
+                  c = columns[j];
+                  if (c.resizable) {
+                    if (stretchLeewayOnRight !== null) {
+                      if (c.maxWidth) {
+                        stretchLeewayOnRight += c.maxWidth - c.previousWidth;
+                      } else {
+                        stretchLeewayOnRight = null;
+                      }
+                    }
+                    shrinkLeewayOnRight += c.previousWidth - Math.max(c.minWidth || 0, absoluteColumnMinWidth);
+                  }
+                }
+              }
+              var shrinkLeewayOnLeft = 0, stretchLeewayOnLeft = 0;
+              for (j = 0; j <= i; j++) {
+                // columns on left only affect minPageX
+                c = columns[j];
+                if (c.resizable) {
+                  if (stretchLeewayOnLeft !== null) {
+                    if (c.maxWidth) {
+                      stretchLeewayOnLeft += c.maxWidth - c.previousWidth;
+                    } else {
+                      stretchLeewayOnLeft = null;
+                    }
+                  }
+                  shrinkLeewayOnLeft += c.previousWidth - Math.max(c.minWidth || 0, absoluteColumnMinWidth);
+                }
+              }
+              if (shrinkLeewayOnRight === null) {
+                shrinkLeewayOnRight = 100000;
+              }
+              if (shrinkLeewayOnLeft === null) {
+                shrinkLeewayOnLeft = 100000;
+              }
+              if (stretchLeewayOnRight === null) {
+                stretchLeewayOnRight = 100000;
+              }
+              if (stretchLeewayOnLeft === null) {
+                stretchLeewayOnLeft = 100000;
+              }
+              maxPageX = pageX + Math.min(shrinkLeewayOnRight, stretchLeewayOnLeft);
+              minPageX = pageX - Math.min(shrinkLeewayOnLeft, stretchLeewayOnRight);
+            })
+            .bind("drag", function (e, dd) {
+              var actualMinWidth, d = Math.min(maxPageX, Math.max(minPageX, e.pageX)) - pageX, x;
+              if (d < 0) { // shrink column
+                x = d;
+                for (j = i; j >= 0; j--) {
+                  c = columns[j];
+                  if (c.resizable) {
+                    actualMinWidth = Math.max(c.minWidth || 0, absoluteColumnMinWidth);
+                    if (x && c.previousWidth + x < actualMinWidth) {
+                      x += c.previousWidth - actualMinWidth;
+                      c.width = actualMinWidth;
+                    } else {
+                      c.width = c.previousWidth + x;
+                      x = 0;
+                    }
+                  }
+                }
+
+                if (options.forceFitColumns) {
+                  x = -d;
+                  for (j = i + 1; j < columnElements.length; j++) {
+                    c = columns[j];
+                    if (c.resizable) {
+                      if (x && c.maxWidth && (c.maxWidth - c.previousWidth < x)) {
+                        x -= c.maxWidth - c.previousWidth;
+                        c.width = c.maxWidth;
+                      } else {
+                        c.width = c.previousWidth + x;
+                        x = 0;
+                      }
+                    }
+                  }
+                }
+              } else { // stretch column
+                x = d;
+                for (j = i; j >= 0; j--) {
+                  c = columns[j];
+                  if (c.resizable) {
+                    if (x && c.maxWidth && (c.maxWidth - c.previousWidth < x)) {
+                      x -= c.maxWidth - c.previousWidth;
+                      c.width = c.maxWidth;
+                    } else {
+                      c.width = c.previousWidth + x;
+                      x = 0;
+                    }
+                  }
+                }
+
+                if (options.forceFitColumns) {
+                  x = -d;
+                  for (j = i + 1; j < columnElements.length; j++) {
+                    c = columns[j];
+                    if (c.resizable) {
+                      actualMinWidth = Math.max(c.minWidth || 0, absoluteColumnMinWidth);
+                      if (x && c.previousWidth + x < actualMinWidth) {
+                        x += c.previousWidth - actualMinWidth;
+                        c.width = actualMinWidth;
+                      } else {
+                        c.width = c.previousWidth + x;
+                        x = 0;
+                      }
+                    }
+                  }
+                }
+              }
+              applyColumnHeaderWidths();
+              if (options.syncColumnCellResize) {
+                applyColumnWidths();
+              }
+            })
+            .bind("dragend", function (e, dd) {
+              var newWidth;
+              $(this).parent().removeClass("slick-header-column-active");
+              for (j = 0; j < columnElements.length; j++) {
+                c = columns[j];
+                newWidth = $(columnElements[j]).outerWidth();
+
+                if (c.previousWidth !== newWidth && c.rerenderOnResize) {
+                  invalidateAllRows();
+                }
+              }
+              updateCanvasWidth(true);
+              render();
+              trigger(self.onColumnsResized, {});
+            });
+      });
+    }
+
+    function getVBoxDelta($el) {
+      var p = ["borderTopWidth", "borderBottomWidth", "paddingTop", "paddingBottom"];
+      var delta = 0;
+      $.each(p, function (n, val) {
+        delta += parseFloat($el.css(val)) || 0;
+      });
+      return delta;
+    }
+
+    function measureCellPaddingAndBorder() {
+      var el;
+      var h = ["borderLeftWidth", "borderRightWidth", "paddingLeft", "paddingRight"];
+      var v = ["borderTopWidth", "borderBottomWidth", "paddingTop", "paddingBottom"];
+
+      el = $("<div class='ui-state-default slick-header-column' style='visibility:hidden'>-</div>").appendTo($headers);
+      headerColumnWidthDiff = headerColumnHeightDiff = 0;
+      $.each(h, function (n, val) {
+        headerColumnWidthDiff += parseFloat(el.css(val)) || 0;
+      });
+      $.each(v, function (n, val) {
+        headerColumnHeightDiff += parseFloat(el.css(val)) || 0;
+      });
+      el.remove();
+
+      var r = $("<div class='slick-row' />").appendTo($canvas);
+      el = $("<div class='slick-cell' id='' style='visibility:hidden'>-</div>").appendTo(r);
+      cellWidthDiff = cellHeightDiff = 0;
+      $.each(h, function (n, val) {
+        cellWidthDiff += parseFloat(el.css(val)) || 0;
+      });
+      $.each(v, function (n, val) {
+        cellHeightDiff += parseFloat(el.css(val)) || 0;
+      });
+      r.remove();
+
+      absoluteColumnMinWidth = Math.max(headerColumnWidthDiff, cellWidthDiff);
+    }
+
+    function createCssRules() {
+      $style = $("<style type='text/css' rel='stylesheet' />").appendTo($("head"));
+      var rowHeight = (options.rowHeight - cellHeightDiff);
+      var rules = [
+        "." + uid + " .slick-header-column { left: 1000px; }",
+        "." + uid + " .slick-top-panel { height:" + options.topPanelHeight + "px; }",
+        "." + uid + " .slick-headerrow-columns { height:" + options.headerRowHeight + "px; }",
+        "." + uid + " .slick-cell { height:" + rowHeight + "px; }",
+        "." + uid + " .slick-row { height:" + options.rowHeight + "px; }"
+      ];
+
+      for (var i = 0; i < columns.length; i++) {
+        rules.push("." + uid + " .l" + i + " { }");
+        rules.push("." + uid + " .r" + i + " { }");
+      }
+
+      if ($style[0].styleSheet) { // IE
+        $style[0].styleSheet.cssText = rules.join(" ");
+      } else {
+        $style[0].appendChild(document.createTextNode(rules.join(" ")));
+      }
+    }
+
+    function getColumnCssRules(idx) {
+      if (!stylesheet) {
+        var sheets = document.styleSheets;
+        for (var i = 0; i < sheets.length; i++) {
+          if ((sheets[i].ownerNode || sheets[i].owningElement) == $style[0]) {
+            stylesheet = sheets[i];
+            break;
+          }
+        }
+
+        if (!stylesheet) {
+          throw new Error("Cannot find stylesheet.");
+        }
+
+        // find and cache column CSS rules
+        columnCssRulesL = [];
+        columnCssRulesR = [];
+        var cssRules = (stylesheet.cssRules || stylesheet.rules);
+        var matches, columnIdx;
+        for (var i = 0; i < cssRules.length; i++) {
+          var selector = cssRules[i].selectorText;
+          if (matches = /\.l\d+/.exec(selector)) {
+            columnIdx = parseInt(matches[0].substr(2, matches[0].length - 2), 10);
+            columnCssRulesL[columnIdx] = cssRules[i];
+          } else if (matches = /\.r\d+/.exec(selector)) {
+            columnIdx = parseInt(matches[0].substr(2, matches[0].length - 2), 10);
+            columnCssRulesR[columnIdx] = cssRules[i];
+          }
+        }
+      }
+
+      return {
+        "left": columnCssRulesL[idx],
+        "right": columnCssRulesR[idx]
+      };
+    }
+
+    function removeCssRules() {
+      $style.remove();
+      stylesheet = null;
+    }
+
+    function destroy() {
+      getEditorLock().cancelCurrentEdit();
+
+      trigger(self.onBeforeDestroy, {});
+
+      var i = plugins.length;
+      while(i--) {
+        unregisterPlugin(plugins[i]);
+      }
+
+      if (options.enableColumnReorder) {
+          $headers.filter(":ui-sortable").sortable("destroy");
+      }
+
+      unbindAncestorScrollEvents();
+      $container.unbind(".slickgrid");
+      removeCssRules();
+
+      $canvas.unbind("draginit dragstart dragend drag");
+      $container.empty().removeClass(uid);
+    }
+
+
+    //////////////////////////////////////////////////////////////////////////////////////////////
+    // General
+
+    function trigger(evt, args, e) {
+      e = e || new Slick.EventData();
+      args = args || {};
+      args.grid = self;
+      return evt.notify(args, e, self);
+    }
+
+    function getEditorLock() {
+      return options.editorLock;
+    }
+
+    function getEditController() {
+      return editController;
+    }
+
+    function getColumnIndex(id) {
+      return columnsById[id];
+    }
+
+    function autosizeColumns() {
+      var i, c,
+          widths = [],
+          shrinkLeeway = 0,
+          total = 0,
+          prevTotal,
+          availWidth = viewportHasVScroll ? viewportW - scrollbarDimensions.width : viewportW;
+
+      for (i = 0; i < columns.length; i++) {
+        c = columns[i];
+        widths.push(c.width);
+        total += c.width;
+        if (c.resizable) {
+          shrinkLeeway += c.width - Math.max(c.minWidth, absoluteColumnMinWidth);
+        }
+      }
+
+      // shrink
+      prevTotal = total;
+      while (total > availWidth && shrinkLeeway) {
+        var shrinkProportion = (total - availWidth) / shrinkLeeway;
+        for (i = 0; i < columns.length && total > availWidth; i++) {
+          c = columns[i];
+          var width = widths[i];
+          if (!c.resizable || width <= c.minWidth || width <= absoluteColumnMinWidth) {
+            continue;
+          }
+          var absMinWidth = Math.max(c.minWidth, absoluteColumnMinWidth);
+          var shrinkSize = Math.floor(shrinkProportion * (width - absMinWidth)) || 1;
+          shrinkSize = Math.min(shrinkSize, width - absMinWidth);
+          total -= shrinkSize;
+          shrinkLeeway -= shrinkSize;
+          widths[i] -= shrinkSize;
+        }
+        if (prevTotal == total) {  // avoid infinite loop
+          break;
+        }
+        prevTotal = total;
+      }
+
+      // grow
+      prevTotal = total;
+      while (total < availWidth) {
+        var growProportion = availWidth / total;
+        for (i = 0; i < columns.length && total < availWidth; i++) {
+          c = columns[i];
+          if (!c.resizable || c.maxWidth <= c.width) {
+            continue;
+          }
+          var growSize = Math.min(Math.floor(growProportion * c.width) - c.width, (c.maxWidth - c.width) || 1000000) || 1;
+          total += growSize;
+          widths[i] += growSize;
+        }
+        if (prevTotal == total) {  // avoid infinite loop
+          break;
+        }
+        prevTotal = total;
+      }
+
+      var reRender = false;
+      for (i = 0; i < columns.length; i++) {
+        if (columns[i].rerenderOnResize && columns[i].width != widths[i]) {
+          reRender = true;
+        }
+        columns[i].width = widths[i];
+      }
+
+      applyColumnHeaderWidths();
+      updateCanvasWidth(true);
+      if (reRender) {
+        invalidateAllRows();
+        render();
+      }
+    }
+
+    function applyColumnHeaderWidths() {
+      if (!initialized) { return; }
+      var h;
+      for (var i = 0, headers = $headers.children(), ii = headers.length; i < ii; i++) {
+        h = $(headers[i]);
+        if (h.width() !== columns[i].width - headerColumnWidthDiff) {
+          h.width(columns[i].width - headerColumnWidthDiff);
+        }
+      }
+
+      updateColumnCaches();
+    }
+
+    function applyColumnWidths() {
+      var x = 0, w, rule;
+      for (var i = 0; i < columns.length; i++) {
+        w = columns[i].width;
+
+        rule = getColumnCssRules(i);
+        rule.left.style.left = x + "px";
+        rule.right.style.right = (canvasWidth - x - w) + "px";
+
+        x += columns[i].width;
+      }
+    }
+
+    function setSortColumn(columnId, ascending) {
+      setSortColumns([{ columnId: columnId, sortAsc: ascending}]);
+    }
+
+    function setSortColumns(cols) {
+      sortColumns = cols;
+
+      var headerColumnEls = $headers.children();
+      headerColumnEls
+          .removeClass("slick-header-column-sorted")
+          .find(".slick-sort-indicator")
+              .removeClass("slick-sort-indicator-asc slick-sort-indicator-desc");
+
+      $.each(sortColumns, function(i, col) {
+        if (col.sortAsc == null) {
+          col.sortAsc = true;
+        }
+        var columnIndex = getColumnIndex(col.columnId);
+        if (columnIndex != null) {
+          headerColumnEls.eq(columnIndex)
+              .addClass("slick-header-column-sorted")
+              .find(".slick-sort-indicator")
+                  .addClass(col.sortAsc ? "slick-sort-indicator-asc" : "slick-sort-indicator-desc");
+        }
+      });
+    }
+
+    function getSortColumns() {
+      return sortColumns;
+    }
+
+    function handleSelectedRangesChanged(e, ranges) {
+      selectedRows = [];
+      var hash = {};
+      for (var i = 0; i < ranges.length; i++) {
+        for (var j = ranges[i].fromRow; j <= ranges[i].toRow; j++) {
+          if (!hash[j]) {  // prevent duplicates
+            selectedRows.push(j);
+            hash[j] = {};
+          }
+          for (var k = ranges[i].fromCell; k <= ranges[i].toCell; k++) {
+            if (canCellBeSelected(j, k)) {
+              hash[j][columns[k].id] = options.selectedCellCssClass;
+            }
+          }
+        }
+      }
+
+      setCellCssStyles(options.selectedCellCssClass, hash);
+
+      trigger(self.onSelectedRowsChanged, {rows: getSelectedRows()}, e);
+    }
+
+    function getColumns() {
+      return columns;
+    }
+
+    function updateColumnCaches() {
+      // Pre-calculate cell boundaries.
+      columnPosLeft = [];
+      columnPosRight = [];
+      var x = 0;
+      for (var i = 0, ii = columns.length; i < ii; i++) {
+        columnPosLeft[i] = x;
+        columnPosRight[i] = x + columns[i].width;
+        x += columns[i].width;
+      }
+    }
+
+    function setColumns(columnDefinitions) {
+      columns = columnDefinitions;
+
+      columnsById = {};
+      for (var i = 0; i < columns.length; i++) {
+        var m = columns[i] = $.extend({}, columnDefaults, columns[i]);
+        columnsById[m.id] = i;
+        if (m.minWidth && m.width < m.minWidth) {
+          m.width = m.minWidth;
+        }
+        if (m.maxWidth && m.width > m.maxWidth) {
+          m.width = m.maxWidth;
+        }
+      }
+
+      updateColumnCaches();
+
+      if (initialized) {
+        invalidateAllRows();
+        createColumnHeaders();
+        removeCssRules();
+        createCssRules();
+        resizeCanvas();
+        applyColumnWidths();
+        handleScroll();
+      }
+    }
+
+    function getOptions() {
+      return options;
+    }
+
+    function setOptions(args) {
+      if (!getEditorLock().commitCurrentEdit()) {
+        return;
+      }
+
+      makeActiveCellNormal();
+
+      if (options.enableAddRow !== args.enableAddRow) {
+        invalidateRow(getDataLength());
+      }
+
+      options = $.extend(options, args);
+      validateAndEnforceOptions();
+
+      $viewport.css("overflow-y", options.autoHeight ? "hidden" : "auto");
+      render();
+    }
+
+    function validateAndEnforceOptions() {
+      if (options.autoHeight) {
+        options.leaveSpaceForNewRows = false;
+      }
+    }
+
+    function setData(newData, scrollToTop) {
+      data = newData;
+      invalidateAllRows();
+      updateRowCount();
+      if (scrollToTop) {
+        scrollTo(0);
+      }
+    }
+
+    function getData() {
+      return data;
+    }
+
+    function getDataLength() {
+      if (data.getLength) {
+        return data.getLength();
+      } else {
+        return data.length;
+      }
+    }
+
+    function getDataItem(i) {
+      if (data.getItem) {
+        return data.getItem(i);
+      } else {
+        return data[i];
+      }
+    }
+
+    function getTopPanel() {
+      return $topPanel[0];
+    }
+
+    function setTopPanelVisibility(visible) {
+      if (options.showTopPanel != visible) {
+        options.showTopPanel = visible;
+        if (visible) {
+          $topPanelScroller.slideDown("fast", resizeCanvas);
+        } else {
+          $topPanelScroller.slideUp("fast", resizeCanvas);
+        }
+      }
+    }
+
+    function setHeaderRowVisibility(visible) {
+      if (options.showHeaderRow != visible) {
+        options.showHeaderRow = visible;
+        if (visible) {
+          $headerRowScroller.slideDown("fast", resizeCanvas);
+        } else {
+          $headerRowScroller.slideUp("fast", resizeCanvas);
+        }
+      }
+    }
+
+    function getContainerNode() {
+      return $container.get(0);
+    }
+
+    //////////////////////////////////////////////////////////////////////////////////////////////
+    // Rendering / Scrolling
+
+    function getRowTop(row) {
+      return options.rowHeight * row - offset;
+    }
+
+    function getRowFromPosition(y) {
+      return Math.floor((y + offset) / options.rowHeight);
+    }
+
+    function scrollTo(y) {
+      y = Math.max(y, 0);
+      y = Math.min(y, th - viewportH + (viewportHasHScroll ? scrollbarDimensions.height : 0));
+
+      var oldOffset = offset;
+
+      page = Math.min(n - 1, Math.floor(y / ph));
+      offset = Math.round(page * cj);
+      var newScrollTop = y - offset;
+
+      if (offset != oldOffset) {
+        var range = getVisibleRange(newScrollTop);
+        cleanupRows(range);
+        updateRowPositions();
+      }
+
+      if (prevScrollTop != newScrollTop) {
+        vScrollDir = (prevScrollTop + oldOffset < newScrollTop + offset) ? 1 : -1;
+        $viewport[0].scrollTop = (lastRenderedScrollTop = scrollTop = prevScrollTop = newScrollTop);
+
+        trigger(self.onViewportChanged, {});
+      }
+    }
+
+    function defaultFormatter(row, cell, value, columnDef, dataContext) {
+      if (value == null) {
+        return "";
+      } else {
+        return (value + "").replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;");
+      }
+    }
+
+    function getFormatter(row, column) {
+      var rowMetadata = data.getItemMetadata && data.getItemMetadata(row);
+
+      // look up by id, then index
+      var columnOverrides = rowMetadata &&
+          rowMetadata.columns &&
+          (rowMetadata.columns[column.id] || rowMetadata.columns[getColumnIndex(column.id)]);
+
+      return (columnOverrides && columnOverrides.formatter) ||
+          (rowMetadata && rowMetadata.formatter) ||
+          column.formatter ||
+          (options.formatterFactory && options.formatterFactory.getFormatter(column)) ||
+          options.defaultFormatter;
+    }
+
+    function getEditor(row, cell) {
+      var column = columns[cell];
+      var rowMetadata = data.getItemMetadata && data.getItemMetadata(row);
+      var columnMetadata = rowMetadata && rowMetadata.columns;
+
+      if (columnMetadata && columnMetadata[column.id] && columnMetadata[column.id].editor !== undefined) {
+        return columnMetadata[column.id].editor;
+      }
+      if (columnMetadata && columnMetadata[cell] && columnMetadata[cell].editor !== undefined) {
+        return columnMetadata[cell].editor;
+      }
+
+      return column.editor || (options.editorFactory && options.editorFactory.getEditor(column));
+    }
+
+    function getDataItemValueForColumn(item, columnDef) {
+      if (options.dataItemColumnValueExtractor) {
+        return options.dataItemColumnValueExtractor(item, columnDef);
+      }
+      return item[columnDef.field];
+    }
+
+    function appendRowHtml(stringArray, row, range, dataLength) {
+      var d = getDataItem(row);
+      var dataLoading = row < dataLength && !d;
+      var rowCss = "slick-row" +
+          (dataLoading ? " loading" : "") +
+          (row === activeRow ? " active" : "") +
+          (row % 2 == 1 ? " odd" : " even");
+
+      var metadata = data.getItemMetadata && data.getItemMetadata(row);
+
+      if (metadata && metadata.cssClasses) {
+        rowCss += " " + metadata.cssClasses;
+      }
+
+      stringArray.push("<div class='ui-widget-content " + rowCss + "' style='top:" + getRowTop(row) + "px'>");
+
+      var colspan, m;
+      for (var i = 0, ii = columns.length; i < ii; i++) {
+        m = columns[i];
+        colspan = 1;
+        if (metadata && metadata.columns) {
+          var columnData = metadata.columns[m.id] || metadata.columns[i];
+          colspan = (columnData && columnData.colspan) || 1;
+          if (colspan === "*") {
+            colspan = ii - i;
+          }
+        }
+
+        // Do not render cells outside of the viewport.
+        if (columnPosRight[Math.min(ii - 1, i + colspan - 1)] > range.leftPx) {
+          if (columnPosLeft[i] > range.rightPx) {
+            // All columns to the right are outside the range.
+            break;
+          }
+
+          appendCellHtml(stringArray, row, i, colspan, d);
+        }
+
+        if (colspan > 1) {
+          i += (colspan - 1);
+        }
+      }
+
+      stringArray.push("</div>");
+    }
+
+    function appendCellHtml(stringArray, row, cell, colspan, item) {
+      var m = columns[cell];
+      var cellCss = "slick-cell l" + cell + " r" + Math.min(columns.length - 1, cell + colspan - 1) +
+          (m.cssClass ? " " + m.cssClass : "");
+      if (row === activeRow && cell === activeCell) {
+        cellCss += (" active");
+      }
+
+      // TODO:  merge them together in the setter
+      for (var key in cellCssClasses) {
+        if (cellCssClasses[key][row] && cellCssClasses[key][row][m.id]) {
+          cellCss += (" " + cellCssClasses[key][row][m.id]);
+        }
+      }
+
+      stringArray.push("<div class='" + cellCss + "'>");
+
+      // if there is a corresponding row (if not, this is the Add New row or this data hasn't been loaded yet)
+      if (item) {
+        var value = getDataItemValueForColumn(item, m);
+        stringArray.push(getFormatter(row, m)(row, cell, value, m, item));
+      }
+
+      stringArray.push("</div>");
+
+      rowsCache[row].cellRenderQueue.push(cell);
+      rowsCache[row].cellColSpans[cell] = colspan;
+    }
+
+
+    function cleanupRows(rangeToKeep) {
+      for (var i in rowsCache) {
+        if (((i = parseInt(i, 10)) !== activeRow) && (i < rangeToKeep.top || i > rangeToKeep.bottom)) {
+          removeRowFromCache(i);
+        }
+      }
+    }
+
+    function invalidate() {
+      updateRowCount();
+      invalidateAllRows();
+      render();
+    }
+
+    function invalidateAllRows() {
+      if (currentEditor) {
+        makeActiveCellNormal();
+      }
+      for (var row in rowsCache) {
+        removeRowFromCache(row);
+      }
+    }
+
+    function removeRowFromCache(row) {
+      var cacheEntry = rowsCache[row];
+      if (!cacheEntry) {
+        return;
+      }
+      $canvas[0].removeChild(cacheEntry.rowNode);
+      delete rowsCache[row];
+      delete postProcessedRows[row];
+      renderedRows--;
+      counter_rows_removed++;
+    }
+
+    function invalidateRows(rows) {
+      var i, rl;
+      if (!rows || !rows.length) {
+        return;
+      }
+      vScrollDir = 0;
+      for (i = 0, rl = rows.length; i < rl; i++) {
+        if (currentEditor && activeRow === rows[i]) {
+          makeActiveCellNormal();
+        }
+        if (rowsCache[rows[i]]) {
+          removeRowFromCache(rows[i]);
+        }
+      }
+    }
+
+    function invalidateRow(row) {
+      invalidateRows([row]);
+    }
+
+    function updateCell(row, cell) {
+      var cellNode = getCellNode(row, cell);
+      if (!cellNode) {
+        return;
+      }
+
+      var m = columns[cell], d = getDataItem(row);
+      if (currentEditor && activeRow === row && activeCell === cell) {
+        currentEditor.loadValue(d);
+      } else {
+        cellNode.innerHTML = d ? getFormatter(row, m)(row, cell, getDataItemValueForColumn(d, m), m, d) : "";
+        invalidatePostProcessingResults(row);
+      }
+    }
+
+    function updateRow(row) {
+      var cacheEntry = rowsCache[row];
+      if (!cacheEntry) {
+        return;
+      }
+
+      ensureCellNodesInRowsCache(row);
+
+      var d = getDataItem(row);
+
+      for (var columnIdx in cacheEntry.cellNodesByColumnIdx) {
+        if (!cacheEntry.cellNodesByColumnIdx.hasOwnProperty(columnIdx)) {
+          continue;
+        }
+
+        columnIdx = columnIdx | 0;
+        var m = columns[columnIdx],
+            node = cacheEntry.cellNodesByColumnIdx[columnIdx];
+
+        if (row === activeRow && columnIdx === activeCell && currentEditor) {
+          currentEditor.loadValue(d);
+        } else if (d) {
+          node.innerHTML = getFormatter(row, m)(row, columnIdx, getDataItemValueForColumn(d, m), m, d);
+        } else {
+          node.innerHTML = "";
+        }
+      }
+
+      invalidatePostProcessingResults(row);
+    }
+
+    function getViewportHeight() {
+      return parseFloat($.css($container[0], "height", true)) -
+          parseFloat($.css($container[0], "paddingTop", true)) -
+          parseFloat($.css($container[0], "paddingBottom", true)) -
+          parseFloat($.css($headerScroller[0], "height")) - getVBoxDelta($headerScroller) -
+          (options.showTopPanel ? options.topPanelHeight + getVBoxDelta($topPanelScroller) : 0) -
+          (options.showHeaderRow ? options.headerRowHeight + getVBoxDelta($headerRowScroller) : 0);
+    }
+
+    function resizeCanvas() {
+      if (!initialized) { return; }
+      if (options.autoHeight) {
+        viewportH = options.rowHeight * (getDataLength() + (options.enableAddRow ? 1 : 0));
+      } else {
+        viewportH = getViewportHeight();
+      }
+
+      numVisibleRows = Math.ceil(viewportH / options.rowHeight);
+      viewportW = parseFloat($.css($container[0], "width", true));
+      if (!options.autoHeight) {
+        $viewport.height(viewportH);
+      }
+
+      if (options.forceFitColumns) {
+        autosizeColumns();
+      }
+
+      updateRowCount();
+      handleScroll();
+      render();
+    }
+
+    function updateRowCount() {
+      var dataLength = getDataLength();
+      if (!initialized) { return; }
+      numberOfRows = dataLength +
+          (options.enableAddRow ? 1 : 0) +
+          (options.leaveSpaceForNewRows ? numVisibleRows - 1 : 0);
+
+      var oldViewportHasVScroll = viewportHasVScroll;
+      // with autoHeight, we do not need to accommodate the vertical scroll bar
+      viewportHasVScroll = !options.autoHeight && (numberOfRows * options.rowHeight > viewportH);
+
+      // remove the rows that are now outside of the data range
+      // this helps avoid redundant calls to .removeRow() when the size of the data decreased by thousands of rows
+      var l = options.enableAddRow ? dataLength : dataLength - 1;
+      for (var i in rowsCache) {
+        if (i >= l) {
+          removeRowFromCache(i);
+        }
+      }
+
+      if (activeCellNode && activeRow > l) {
+        resetActiveCell();
+      }
+
+      var oldH = h;
+      th = Math.max(options.rowHeight * numberOfRows, viewportH - scrollbarDimensions.height);
+      if (th < maxSupportedCssHeight) {
+        // just one page
+        h = ph = th;
+        n = 1;
+        cj = 0;
+      } else {
+        // break into pages
+        h = maxSupportedCssHeight;
+        ph = h / 100;
+        n = Math.floor(th / ph);
+        cj = (th - h) / (n - 1);
+      }
+
+      if (h !== oldH) {
+        $canvas.css("height", h);
+        scrollTop = $viewport[0].scrollTop;
+      }
+
+      var oldScrollTopInRange = (scrollTop + offset <= th - viewportH);
+
+      if (th == 0 || scrollTop == 0) {
+        page = offset = 0;
+      } else if (oldScrollTopInRange) {
+        // maintain virtual position
+        scrollTo(scrollTop + offset);
+      } else {
+        // scroll to bottom
+        scrollTo(th - viewportH);
+      }
+
+      if (h != oldH && options.autoHeight) {
+        resizeCanvas();
+      }
+
+      if (options.forceFitColumns && oldViewportHasVScroll != viewportHasVScroll) {
+        autosizeColumns();
+      }
+      updateCanvasWidth(false);
+    }
+
+    function getVisibleRange(viewportTop, viewportLeft) {
+      if (viewportTop == null) {
+        viewportTop = scrollTop;
+      }
+      if (viewportLeft == null) {
+        viewportLeft = scrollLeft;
+      }
+
+      return {
+        top: getRowFromPosition(viewportTop),
+        bottom: getRowFromPosition(viewportTop + viewportH) + 1,
+        leftPx: viewportLeft,
+        rightPx: viewportLeft + viewportW
+      };
+    }
+
+    function getRenderedRange(viewportTop, viewportLeft) {
+      var range = getVisibleRange(viewportTop, viewportLeft);
+      var buffer = Math.round(viewportH / options.rowHeight);
+      var minBuffer = 3;
+
+      if (vScrollDir == -1) {
+        range.top -= buffer;
+        range.bottom += minBuffer;
+      } else if (vScrollDir == 1) {
+        range.top -= minBuffer;
+        range.bottom += buffer;
+      } else {
+        range.top -= minBuffer;
+        range.bottom += minBuffer;
+      }
+
+      range.top = Math.max(0, range.top);
+      range.bottom = Math.min(options.enableAddRow ? getDataLength() : getDataLength() - 1, range.bottom);
+
+      range.leftPx -= viewportW;
+      range.rightPx += viewportW;
+
+      range.leftPx = Math.max(0, range.leftPx);
+      range.rightPx = Math.min(canvasWidth, range.rightPx);
+
+      return range;
+    }
+
+    function ensureCellNodesInRowsCache(row) {
+      var cacheEntry = rowsCache[row];
+      if (cacheEntry) {
+        if (cacheEntry.cellRenderQueue.length) {
+          var lastChild = cacheEntry.rowNode.lastChild;
+          while (cacheEntry.cellRenderQueue.length) {
+            var columnIdx = cacheEntry.cellRenderQueue.pop();
+            cacheEntry.cellNodesByColumnIdx[columnIdx] = lastChild;
+            lastChild = lastChild.previousSibling;
+          }
+        }
+      }
+    }
+
+    function cleanUpCells(range, row) {
+      var totalCellsRemoved = 0;
+      var cacheEntry = rowsCache[row];
+
+      // Remove cells outside the range.
+      var cellsToRemove = [];
+      for (var i in cacheEntry.cellNodesByColumnIdx) {
+        // I really hate it when people mess with Array.prototype.
+        if (!cacheEntry.cellNodesByColumnIdx.hasOwnProperty(i)) {
+          continue;
+        }
+
+        // This is a string, so it needs to be cast back to a number.
+        i = i | 0;
+
+        var colspan = cacheEntry.cellColSpans[i];
+        if (columnPosLeft[i] > range.rightPx ||
+          columnPosRight[Math.min(columns.length - 1, i + colspan - 1)] < range.leftPx) {
+          if (!(row == activeRow && i == activeCell)) {
+            cellsToRemove.push(i);
+          }
+        }
+      }
+
+      var cellToRemove;
+      while ((cellToRemove = cellsToRemove.pop()) != null) {
+        cacheEntry.rowNode.removeChild(cacheEntry.cellNodesByColumnIdx[cellToRemove]);
+        delete cacheEntry.cellColSpans[cellToRemove];
+        delete cacheEntry.cellNodesByColumnIdx[cellToRemove];
+        if (postProcessedRows[row]) {
+          delete postProcessedRows[row][cellToRemove];
+        }
+        totalCellsRemoved++;
+      }
+    }
+
+    function cleanUpAndRenderCells(range) {
+      var cacheEntry;
+      var stringArray = [];
+      var processedRows = [];
+      var cellsAdded;
+      var totalCellsAdded = 0;
+      var colspan;
+
+      for (var row = range.top, btm = range.bottom; row <= btm; row++) {
+        cacheEntry = rowsCache[row];
+        if (!cacheEntry) {
+          continue;
+        }
+
+        // cellRenderQueue populated in renderRows() needs to be cleared first
+        ensureCellNodesInRowsCache(row);
+
+        cleanUpCells(range, row);
+
+        // Render missing cells.
+        cellsAdded = 0;
+
+        var metadata = data.getItemMetadata && data.getItemMetadata(row);
+        metadata = metadata && metadata.columns;
+
+        var d = getDataItem(row);
+
+        // TODO:  shorten this loop (index? heuristics? binary search?)
+        for (var i = 0, ii = columns.length; i < ii; i++) {
+          // Cells to the right are outside the range.
+          if (columnPosLeft[i] > range.rightPx) {
+            break;
+          }
+
+          // Already rendered.
+          if ((colspan = cacheEntry.cellColSpans[i]) != null) {
+            i += (colspan > 1 ? colspan - 1 : 0);
+            continue;
+          }
+
+          colspan = 1;
+          if (metadata) {
+            var columnData = metadata[columns[i].id] || metadata[i];
+            colspan = (columnData && columnData.colspan) || 1;
+            if (colspan === "*") {
+              colspan = ii - i;
+            }
+          }
+
+          if (columnPosRight[Math.min(ii - 1, i + colspan - 1)] > range.leftPx) {
+            appendCellHtml(stringArray, row, i, colspan, d);
+            cellsAdded++;
+          }
+
+          i += (colspan > 1 ? colspan - 1 : 0);
+        }
+
+        if (cellsAdded) {
+          totalCellsAdded += cellsAdded;
+          processedRows.push(row);
+        }
+      }
+
+      if (!stringArray.length) {
+        return;
+      }
+
+      var x = document.createElement("div");
+      x.innerHTML = stringArray.join("");
+
+      var processedRow;
+      var node;
+      while ((processedRow = processedRows.pop()) != null) {
+        cacheEntry = rowsCache[processedRow];
+        var columnIdx;
+        while ((columnIdx = cacheEntry.cellRenderQueue.pop()) != null) {
+          node = x.lastChild;
+          cacheEntry.rowNode.appendChild(node);
+          cacheEntry.cellNodesByColumnIdx[columnIdx] = node;
+        }
+      }
+    }
+
+    function renderRows(range) {
+      var parentNode = $canvas[0],
+          stringArray = [],
+          rows = [],
+          needToReselectCell = false,
+          dataLength = getDataLength();
+
+      for (var i = range.top, ii = range.bottom; i <= ii; i++) {
+        if (rowsCache[i]) {
+          continue;
+        }
+        renderedRows++;
+        rows.push(i);
+
+        // Create an entry right away so that appendRowHtml() can
+        // start populatating it.
+        rowsCache[i] = {
+          "rowNode": null,
+
+          // ColSpans of rendered cells (by column idx).
+          // Can also be used for checking whether a cell has been rendered.
+          "cellColSpans": [],
+
+          // Cell nodes (by column idx).  Lazy-populated by ensureCellNodesInRowsCache().
+          "cellNodesByColumnIdx": [],
+
+          // Column indices of cell nodes that have been rendered, but not yet indexed in
+          // cellNodesByColumnIdx.  These are in the same order as cell nodes added at the
+          // end of the row.
+          "cellRenderQueue": []
+        };
+
+        appendRowHtml(stringArray, i, range, dataLength);
+        if (activeCellNode && activeRow === i) {
+          needToReselectCell = true;
+        }
+        counter_rows_rendered++;
+      }
+
+      if (!rows.length) { return; }
+
+      var x = document.createElement("div");
+      x.innerHTML = stringArray.join("");
+
+      for (var i = 0, ii = rows.length; i < ii; i++) {
+        rowsCache[rows[i]].rowNode = parentNode.appendChild(x.firstChild);
+      }
+
+      if (needToReselectCell) {
+        activeCellNode = getCellNode(activeRow, activeCell);
+      }
+    }
+
+    function startPostProcessing() {
+      if (!options.enableAsyncPostRender) {
+        return;
+      }
+      clearTimeout(h_postrender);
+      h_postrender = setTimeout(asyncPostProcessRows, options.asyncPostRenderDelay);
+    }
+
+    function invalidatePostProcessingResults(row) {
+      delete postProcessedRows[row];
+      postProcessFromRow = Math.min(postProcessFromRow, row);
+      postProcessToRow = Math.max(postProcessToRow, row);
+      startPostProcessing();
+    }
+
+    function updateRowPositions() {
+      for (var row in rowsCache) {
+        rowsCache[row].rowNode.style.top = getRowTop(row) + "px";
+      }
+    }
+
+    function render() {
+      if (!initialized) { return; }
+      var visible = getVisibleRange();
+      var rendered = getRenderedRange();
+
+      // remove rows no longer in the viewport
+      cleanupRows(rendered);
+
+      // add new rows & missing cells in existing rows
+      if (lastRenderedScrollLeft != scrollLeft) {
+        cleanUpAndRenderCells(rendered);
+      }
+
+      // render missing rows
+      renderRows(rendered);
+
+      postProcessFromRow = visible.top;
+      postProcessToRow = Math.min(options.enableAddRow ? getDataLength() : getDataLength() - 1, visible.bottom);
+      startPostProcessing();
+
+      lastRenderedScrollTop = scrollTop;
+      lastRenderedScrollLeft = scrollLeft;
+      h_render = null;
+    }
+
+    function handleHeaderRowScroll() {
+      var scrollLeft = $headerRowScroller[0].scrollLeft;
+      if (scrollLeft != $viewport[0].scrollLeft) {
+        $viewport[0].scrollLeft = scrollLeft;
+      }
+    }
+
+    function handleScroll() {
+      scrollTop = $viewport[0].scrollTop;
+      scrollLeft = $viewport[0].scrollLeft;
+      var vScrollDist = Math.abs(scrollTop - prevScrollTop);
+      var hScrollDist = Math.abs(scrollLeft - prevScrollLeft);
+
+      if (hScrollDist) {
+        prevScrollLeft = scrollLeft;
+        $headerScroller[0].scrollLeft = scrollLeft;
+        $topPanelScroller[0].scrollLeft = scrollLeft;
+        $headerRowScroller[0].scrollLeft = scrollLeft;
+      }
+
+      if (vScrollDist) {
+        vScrollDir = prevScrollTop < scrollTop ? 1 : -1;
+        prevScrollTop = scrollTop;
+
+        // switch virtual pages if needed
+        if (vScrollDist < viewportH) {
+          scrollTo(scrollTop + offset);
+        } else {
+          var oldOffset = offset;
+          if (h == viewportH) {
+            page = 0;
+          } else {
+            page = Math.min(n - 1, Math.floor(scrollTop * ((th - viewportH) / (h - viewportH)) * (1 / ph)));
+          }
+          offset = Math.round(page * cj);
+          if (oldOffset != offset) {
+            invalidateAllRows();
+          }
+        }
+      }
+
+      if (hScrollDist || vScrollDist) {
+        if (h_render) {
+          clearTimeout(h_render);
+        }
+
+        if (Math.abs(lastRenderedScrollTop - scrollTop) > 20 ||
+            Math.abs(lastRenderedScrollLeft - scrollLeft) > 20) {
+          if (options.forceSyncScrolling || (
+              Math.abs(lastRenderedScrollTop - scrollTop) < viewportH &&
+              Math.abs(lastRenderedScrollLeft - scrollLeft) < viewportW)) {
+            render();
+          } else {
+            h_render = setTimeout(render, 50);
+          }
+
+          trigger(self.onViewportChanged, {});
+        }
+      }
+
+      trigger(self.onScroll, {scrollLeft: scrollLeft, scrollTop: scrollTop});
+    }
+
+    function asyncPostProcessRows() {
+      while (postProcessFromRow <= postProcessToRow) {
+        var row = (vScrollDir >= 0) ? postProcessFromRow++ : postProcessToRow--;
+        var cacheEntry = rowsCache[row];
+        if (!cacheEntry || row >= getDataLength()) {
+          continue;
+        }
+
+        if (!postProcessedRows[row]) {
+          postProcessedRows[row] = {};
+        }
+
+        ensureCellNodesInRowsCache(row);
+        for (var columnIdx in cacheEntry.cellNodesByColumnIdx) {
+          if (!cacheEntry.cellNodesByColumnIdx.hasOwnProperty(columnIdx)) {
+            continue;
+          }
+
+          columnIdx = columnIdx | 0;
+
+          var m = columns[columnIdx];
+          if (m.asyncPostRender && !postProcessedRows[row][columnIdx]) {
+            var node = cacheEntry.cellNodesByColumnIdx[columnIdx];
+            if (node) {
+              m.asyncPostRender(node, row, getDataItem(row), m);
+            }
+            postProcessedRows[row][columnIdx] = true;
+          }
+        }
+
+        h_postrender = setTimeout(asyncPostProcessRows, options.asyncPostRenderDelay);
+        return;
+      }
+    }
+
+    function updateCellCssStylesOnRenderedRows(addedHash, removedHash) {
+      var node, columnId, addedRowHash, removedRowHash;
+      for (var row in rowsCache) {
+        removedRowHash = removedHash && removedHash[row];
+        addedRowHash = addedHash && addedHash[row];
+
+        if (removedRowHash) {
+          for (columnId in removedRowHash) {
+            if (!addedRowHash || removedRowHash[columnId] != addedRowHash[columnId]) {
+              node = getCellNode(row, getColumnIndex(columnId));
+              if (node) {
+                $(node).removeClass(removedRowHash[columnId]);
+              }
+            }
+          }
+        }
+
+        if (addedRowHash) {
+          for (columnId in addedRowHash) {
+            if (!removedRowHash || removedRowHash[columnId] != addedRowHash[columnId]) {
+              node = getCellNode(row, getColumnIndex(columnId));
+              if (node) {
+                $(node).addClass(addedRowHash[columnId]);
+              }
+            }
+          }
+        }
+      }
+    }
+
+    function addCellCssStyles(key, hash) {
+      if (cellCssClasses[key]) {
+        throw "addCellCssStyles: cell CSS hash with key '" + key + "' already exists.";
+      }
+
+      cellCssClasses[key] = hash;
+      updateCellCssStylesOnRenderedRows(hash, null);
+
+      trigger(self.onCellCssStylesChanged, { "key": key, "hash": hash });
+    }
+
+    function removeCellCssStyles(key) {
+      if (!cellCssClasses[key]) {
+        return;
+      }
+
+      updateCellCssStylesOnRenderedRows(null, cellCssClasses[key]);
+      delete cellCssClasses[key];
+
+      trigger(self.onCellCssStylesChanged, { "key": key, "hash": null });
+    }
+
+    function setCellCssStyles(key, hash) {
+      var prevHash = cellCssClasses[key];
+
+      cellCssClasses[key] = hash;
+      updateCellCssStylesOnRenderedRows(hash, prevHash);
+
+      trigger(self.onCellCssStylesChanged, { "key": key, "hash": hash });
+    }
+
+    function getCellCssStyles(key) {
+      return cellCssClasses[key];
+    }
+
+    function flashCell(row, cell, speed) {
+      speed = speed || 100;
+      if (rowsCache[row]) {
+        var $cell = $(getCellNode(row, cell));
+
+        function toggleCellClass(times) {
+          if (!times) {
+            return;
+          }
+          setTimeout(function () {
+                $cell.queue(function () {
+                  $cell.toggleClass(options.cellFlashingCssClass).dequeue();
+                  toggleCellClass(times - 1);
+                });
+              },
+              speed);
+        }
+
+        toggleCellClass(4);
+      }
+    }
+
+    //////////////////////////////////////////////////////////////////////////////////////////////
+    // Interactivity
+
+    function handleDragInit(e, dd) {
+      var cell = getCellFromEvent(e);
+      if (!cell || !cellExists(cell.row, cell.cell)) {
+        return false;
+      }
+
+      var retval = trigger(self.onDragInit, dd, e);
+      if (e.isImmediatePropagationStopped()) {
+        return retval;
+      }
+
+      // if nobody claims to be handling drag'n'drop by stopping immediate propagation,
+      // cancel out of it
+      return false;
+    }
+
+    function handleDragStart(e, dd) {
+      var cell = getCellFromEvent(e);
+      if (!cell || !cellExists(cell.row, cell.cell)) {
+        return false;
+      }
+
+      var retval = trigger(self.onDragStart, dd, e);
+      if (e.isImmediatePropagationStopped()) {
+        return retval;
+      }
+
+      return false;
+    }
+
+    function handleDrag(e, dd) {
+      return trigger(self.onDrag, dd, e);
+    }
+
+    function handleDragEnd(e, dd) {
+      trigger(self.onDragEnd, dd, e);
+    }
+
+    function handleKeyDown(e) {
+      trigger(self.onKeyDown, {row: activeRow, cell: activeCell}, e);
+      var handled = e.isImmediatePropagationStopped();
+
+      if (!handled) {
+        if (!e.shiftKey && !e.altKey && !e.ctrlKey) {
+          if (e.which == 27) {
+            if (!getEditorLock().isActive()) {
+              return; // no editing mode to cancel, allow bubbling and default processing (exit without cancelling the event)
+            }
+            cancelEditAndSetFocus();
+          } else if (e.which == 37) {
+            handled = navigateLeft();
+          } else if (e.which == 39) {
+            handled = navigateRight();
+          } else if (e.which == 38) {
+            handled = navigateUp();
+          } else if (e.which == 40) {
+            handled = navigateDown();
+          } else if (e.which == 9) {
+            handled = navigateNext();
+          } else if (e.which == 13) {
+            if (options.editable) {
+              if (currentEditor) {
+                // adding new row
+                if (activeRow === getDataLength()) {
+                  navigateDown();
+                } else {
+                  commitEditAndSetFocus();
+                }
+              } else {
+                if (getEditorLock().commitCurrentEdit()) {
+                  makeActiveCellEditable();
+                }
+              }
+            }
+            handled = true;
+          }
+        } else if (e.which == 9 && e.shiftKey && !e.ctrlKey && !e.altKey) {
+          handled = navigatePrev();
+        }
+      }
+
+      if (handled) {
+        // the event has been handled so don't let parent element (bubbling/propagation) or browser (default) handle it
+        e.stopPropagation();
+        e.preventDefault();
+        try {
+          e.originalEvent.keyCode = 0; // prevent default behaviour for special keys in IE browsers (F3, F5, etc.)
+        }
+        // ignore exceptions - setting the original event's keycode throws access denied exception for "Ctrl"
+        // (hitting control key only, nothing else), "Shift" (maybe others)
+        catch (error) {
+        }
+      }
+    }
+
+    function handleClick(e) {
+      if (!currentEditor) {
+        // if this click resulted in some cell child node getting focus,
+        // don't steal it back - keyboard events will still bubble up
+        if (e.target != document.activeElement) {
+          setFocus();
+        }
+      }
+
+      var cell = getCellFromEvent(e);
+      if (!cell || (currentEditor !== null && activeRow == cell.row && activeCell == cell.cell)) {
+        return;
+      }
+
+      trigger(self.onClick, {row: cell.row, cell: cell.cell}, e);
+      if (e.isImmediatePropagationStopped()) {
+        return;
+      }
+
+      if ((activeCell != cell.cell || activeRow != cell.row) && canCellBeActive(cell.row, cell.cell)) {
+        if (!getEditorLock().isActive() || getEditorLock().commitCurrentEdit()) {
+          scrollRowIntoView(cell.row, false);
+          setActiveCellInternal(getCellNode(cell.row, cell.cell), (cell.row === getDataLength()) || options.autoEdit);
+        }
+      }
+    }
+
+    function handleContextMenu(e) {
+      var $cell = $(e.target).closest(".slick-cell", $canvas);
+      if ($cell.length === 0) {
+        return;
+      }
+
+      // are we editing this cell?
+      if (activeCellNode === $cell[0] && currentEditor !== null) {
+        return;
+      }
+
+      trigger(self.onContextMenu, {}, e);
+    }
+
+    function handleDblClick(e) {
+      var cell = getCellFromEvent(e);
+      if (!cell || (currentEditor !== null && activeRow == cell.row && activeCell == cell.cell)) {
+        return;
+      }
+
+      trigger(self.onDblClick, {row: cell.row, cell: cell.cell}, e);
+      if (e.isImmediatePropagationStopped()) {
+        return;
+      }
+
+      if (options.editable) {
+        gotoCell(cell.row, cell.cell, true);
+      }
+    }
+
+    function handleHeaderMouseEnter(e) {
+      trigger(self.onHeaderMouseEnter, {
+        "column": $(this).data("column")
+      }, e);
+    }
+
+    function handleHeaderMouseLeave(e) {
+      trigger(self.onHeaderMouseLeave, {
+        "column": $(this).data("column")
+      }, e);
+    }
+
+    function handleHeaderContextMenu(e) {
+      var $header = $(e.target).closest(".slick-header-column", ".slick-header-columns");
+      var column = $header && $header.data("column");
+      trigger(self.onHeaderContextMenu, {column: column}, e);
+    }
+
+    function handleHeaderClick(e) {
+      var $header = $(e.target).closest(".slick-header-column", ".slick-header-columns");
+      var column = $header && $header.data("column");
+      if (column) {
+        trigger(self.onHeaderClick, {column: column}, e);
+      }
+    }
+
+    function handleMouseEnter(e) {
+      trigger(self.onMouseEnter, {}, e);
+    }
+
+    function handleMouseLeave(e) {
+      trigger(self.onMouseLeave, {}, e);
+    }
+
+    function cellExists(row, cell) {
+      return !(row < 0 || row >= getDataLength() || cell < 0 || cell >= columns.length);
+    }
+
+    function getCellFromPoint(x, y) {
+      var row = getRowFromPosition(y);
+      var cell = 0;
+
+      var w = 0;
+      for (var i = 0; i < columns.length && w < x; i++) {
+        w += columns[i].width;
+        cell++;
+      }
+
+      if (cell < 0) {
+        cell = 0;
+      }
+
+      return {row: row, cell: cell - 1};
+    }
+
+    function getCellFromNode(cellNode) {
+      // read column number from .l<columnNumber> CSS class
+      var cls = /l\d+/.exec(cellNode.className);
+      if (!cls) {
+        throw "getCellFromNode: cannot get cell - " + cellNode.className;
+      }
+      return parseInt(cls[0].substr(1, cls[0].length - 1), 10);
+    }
+
+    function getRowFromNode(rowNode) {
+      for (var row in rowsCache) {
+        if (rowsCache[row].rowNode === rowNode) {
+          return row | 0;
+        }
+      }
+
+      return null;
+    }
+
+    function getCellFromEvent(e) {
+      var $cell = $(e.target).closest(".slick-cell", $canvas);
+      if (!$cell.length) {
+        return null;
+      }
+
+      var row = getRowFromNode($cell[0].parentNode);
+      var cell = getCellFromNode($cell[0]);
+
+      if (row == null || cell == null) {
+        return null;
+      } else {
+        return {
+          "row": row,
+          "cell": cell
+        };
+      }
+    }
+
+    function getCellNodeBox(row, cell) {
+      if (!cellExists(row, cell)) {
+        return null;
+      }
+
+      var y1 = getRowTop(row);
+      var y2 = y1 + options.rowHeight - 1;
+      var x1 = 0;
+      for (var i = 0; i < cell; i++) {
+        x1 += columns[i].width;
+      }
+      var x2 = x1 + columns[cell].width;
+
+      return {
+        top: y1,
+        left: x1,
+        bottom: y2,
+        right: x2
+      };
+    }
+
+    //////////////////////////////////////////////////////////////////////////////////////////////
+    // Cell switching
+
+    function resetActiveCell() {
+      setActiveCellInternal(null, false);
+    }
+
+    function setFocus() {
+      if (tabbingDirection == -1) {
+        $focusSink[0].focus();
+      } else {
+        $focusSink2[0].focus();
+      }
+    }
+
+    function scrollCellIntoView(row, cell, doPaging) {
+      scrollRowIntoView(row, doPaging);
+
+      var colspan = getColspan(row, cell);
+      var left = columnPosLeft[cell],
+        right = columnPosRight[cell + (colspan > 1 ? colspan - 1 : 0)],
+        scrollRight = scrollLeft + viewportW;
+
+      if (left < scrollLeft) {
+        $viewport.scrollLeft(left);
+        handleScroll();
+        render();
+      } else if (right > scrollRight) {
+        $viewport.scrollLeft(Math.min(left, right - $viewport[0].clientWidth));
+        handleScroll();
+        render();
+      }
+    }
+
+    function setActiveCellInternal(newCell, editMode) {
+      if (activeCellNode !== null) {
+        makeActiveCellNormal();
+        $(activeCellNode).removeClass("active");
+        if (rowsCache[activeRow]) {
+          $(rowsCache[activeRow].rowNode).removeClass("active");
+        }
+      }
+
+      var activeCellChanged = (activeCellNode !== newCell);
+      activeCellNode = newCell;
+
+      if (activeCellNode != null) {
+        activeRow = getRowFromNode(activeCellNode.parentNode);
+        activeCell = activePosX = getCellFromNode(activeCellNode);
+
+        $(activeCellNode).addClass("active");
+        $(rowsCache[activeRow].rowNode).addClass("active");
+
+        if (options.editable && editMode && isCellPotentiallyEditable(activeRow, activeCell)) {
+          clearTimeout(h_editorLoader);
+
+          if (options.asyncEditorLoading) {
+            h_editorLoader = setTimeout(function () {
+              makeActiveCellEditable();
+            }, options.asyncEditorLoadDelay);
+          } else {
+            makeActiveCellEditable();
+          }
+        }
+      } else {
+        activeRow = activeCell = null;
+      }
+
+      if (activeCellChanged) {
+        trigger(self.onActiveCellChanged, getActiveCell());
+      }
+    }
+
+    function clearTextSelection() {
+      if (document.selection && document.selection.empty) {
+        document.selection.empty();
+      } else if (window.getSelection) {
+        var sel = window.getSelection();
+        if (sel && sel.removeAllRanges) {
+          sel.removeAllRanges();
+        }
+      }
+    }
+
+    function isCellPotentiallyEditable(row, cell) {
+      // is the data for this row loaded?
+      if (row < getDataLength() && !getDataItem(row)) {
+        return false;
+      }
+
+      // are we in the Add New row?  can we create new from this cell?
+      if (columns[cell].cannotTriggerInsert && row >= getDataLength()) {
+        return false;
+      }
+
+      // does this cell have an editor?
+      if (!getEditor(row, cell)) {
+        return false;
+      }
+
+      return true;
+    }
+
+    function makeActiveCellNormal() {
+      if (!currentEditor) {
+        return;
+      }
+      trigger(self.onBeforeCellEditorDestroy, {editor: currentEditor});
+      currentEditor.destroy();
+      currentEditor = null;
+
+      if (activeCellNode) {
+        var d = getDataItem(activeRow);
+        $(activeCellNode).removeClass("editable invalid");
+        if (d) {
+          var column = columns[activeCell];
+          var formatter = getFormatter(activeRow, column);
+          activeCellNode.innerHTML = formatter(activeRow, activeCell, getDataItemValueForColumn(d, column), column, d);
+          invalidatePostProcessingResults(activeRow);
+        }
+      }
+
+      // if there previously was text selected on a page (such as selected text in the edit cell just removed),
+      // IE can't set focus to anything else correctly
+      if (navigator.userAgent.toLowerCase().match(/msie/)) {
+        clearTextSelection();
+      }
+
+      getEditorLock().deactivate(editController);
+    }
+
+    function makeActiveCellEditable(editor) {
+      if (!activeCellNode) {
+        return;
+      }
+      if (!options.editable) {
+        throw "Grid : makeActiveCellEditable : should never get called when options.editable is false";
+      }
+
+      // cancel pending async call if there is one
+      clearTimeout(h_editorLoader);
+
+      if (!isCellPotentiallyEditable(activeRow, activeCell)) {
+        return;
+      }
+
+      var columnDef = columns[activeCell];
+      var item = getDataItem(activeRow);
+
+      if (trigger(self.onBeforeEditCell, {row: activeRow, cell: activeCell, item: item, column: columnDef}) === false) {
+        setFocus();
+        return;
+      }
+
+      getEditorLock().activate(editController);
+      $(activeCellNode).addClass("editable");
+
+      // don't clear the cell if a custom editor is passed through
+      if (!editor) {
+        activeCellNode.innerHTML = "";
+      }
+
+      currentEditor = new (editor || getEditor(activeRow, activeCell))({
+        grid: self,
+        gridPosition: absBox($container[0]),
+        position: absBox(activeCellNode),
+        container: activeCellNode,
+        column: columnDef,
+        item: item || {},
+        commitChanges: commitEditAndSetFocus,
+        cancelChanges: cancelEditAndSetFocus
+      });
+
+      if (item) {
+        currentEditor.loadValue(item);
+      }
+
+      serializedEditorValue = currentEditor.serializeValue();
+
+      if (currentEditor.position) {
+        handleActiveCellPositionChange();
+      }
+    }
+
+    function commitEditAndSetFocus() {
+      // if the commit fails, it would do so due to a validation error
+      // if so, do not steal the focus from the editor
+      if (getEditorLock().commitCurrentEdit()) {
+        setFocus();
+        if (options.autoEdit) {
+          navigateDown();
+        }
+      }
+    }
+
+    function cancelEditAndSetFocus() {
+      if (getEditorLock().cancelCurrentEdit()) {
+        setFocus();
+      }
+    }
+
+    function absBox(elem) {
+      var box = {
+        top: elem.offsetTop,
+        left: elem.offsetLeft,
+        bottom: 0,
+        right: 0,
+        width: $(elem).outerWidth(),
+        height: $(elem).outerHeight(),
+        visible: true};
+      box.bottom = box.top + box.height;
+      box.right = box.left + box.width;
+
+      // walk up the tree
+      var offsetParent = elem.offsetParent;
+      while ((elem = elem.parentNode) != document.body) {
+        if (box.visible && elem.scrollHeight != elem.offsetHeight && $(elem).css("overflowY") != "visible") {
+          box.visible = box.bottom > elem.scrollTop && box.top < elem.scrollTop + elem.clientHeight;
+        }
+
+        if (box.visible && elem.scrollWidth != elem.offsetWidth && $(elem).css("overflowX") != "visible") {
+          box.visible = box.right > elem.scrollLeft && box.left < elem.scrollLeft + elem.clientWidth;
+        }
+
+        box.left -= elem.scrollLeft;
+        box.top -= elem.scrollTop;
+
+        if (elem === offsetParent) {
+          box.left += elem.offsetLeft;
+          box.top += elem.offsetTop;
+          offsetParent = elem.offsetParent;
+        }
+
+        box.bottom = box.top + box.height;
+        box.right = box.left + box.width;
+      }
+
+      return box;
+    }
+
+    function getActiveCellPosition() {
+      return absBox(activeCellNode);
+    }
+
+    function getGridPosition() {
+      return absBox($container[0])
+    }
+
+    function handleActiveCellPositionChange() {
+      if (!activeCellNode) {
+        return;
+      }
+
+      trigger(self.onActiveCellPositionChanged, {});
+
+      if (currentEditor) {
+        var cellBox = getActiveCellPosition();
+        if (currentEditor.show && currentEditor.hide) {
+          if (!cellBox.visible) {
+            currentEditor.hide();
+          } else {
+            currentEditor.show();
+          }
+        }
+
+        if (currentEditor.position) {
+          currentEditor.position(cellBox);
+        }
+      }
+    }
+
+    function getCellEditor() {
+      return currentEditor;
+    }
+
+    function getActiveCell() {
+      if (!activeCellNode) {
+        return null;
+      } else {
+        return {row: activeRow, cell: activeCell};
+      }
+    }
+
+    function getActiveCellNode() {
+      return activeCellNode;
+    }
+
+    function scrollRowIntoView(row, doPaging) {
+      var rowAtTop = row * options.rowHeight;
+      var rowAtBottom = (row + 1) * options.rowHeight - viewportH + (viewportHasHScroll ? scrollbarDimensions.height : 0);
+
+      // need to page down?
+      if ((row + 1) * options.rowHeight > scrollTop + viewportH + offset) {
+        scrollTo(doPaging ? rowAtTop : rowAtBottom);
+        render();
+      }
+      // or page up?
+      else if (row * options.rowHeight < scrollTop + offset) {
+        scrollTo(doPaging ? rowAtBottom : rowAtTop);
+        render();
+      }
+    }
+
+    function scrollRowToTop(row) {
+      scrollTo(row * options.rowHeight);
+      render();
+    }
+
+    function getColspan(row, cell) {
+      var metadata = data.getItemMetadata && data.getItemMetadata(row);
+      if (!metadata || !metadata.columns) {
+        return 1;
+      }
+
+      var columnData = metadata.columns[columns[cell].id] || metadata.columns[cell];
+      var colspan = (columnData && columnData.colspan);
+      if (colspan === "*") {
+        colspan = columns.length - cell;
+      } else {
+        colspan = colspan || 1;
+      }
+
+      return colspan;
+    }
+
+    function findFirstFocusableCell(row) {
+      var cell = 0;
+      while (cell < columns.length) {
+        if (canCellBeActive(row, cell)) {
+          return cell;
+        }
+        cell += getColspan(row, cell);
+      }
+      return null;
+    }
+
+    function findLastFocusableCell(row) {
+      var cell = 0;
+      var lastFocusableCell = null;
+      while (cell < columns.length) {
+        if (canCellBeActive(row, cell)) {
+          lastFocusableCell = cell;
+        }
+        cell += getColspan(row, cell);
+      }
+      return lastFocusableCell;
+    }
+
+    function gotoRight(row, cell, posX) {
+      if (cell >= columns.length) {
+        return null;
+      }
+
+      do {
+        cell += getColspan(row, cell);
+      }
+      while (cell < columns.length && !canCellBeActive(row, cell));
+
+      if (cell < columns.length) {
+        return {
+          "row": row,
+          "cell": cell,
+          "posX": cell
+        };
+      }
+      return null;
+    }
+
+    function gotoLeft(row, cell, posX) {
+      if (cell <= 0) {
+        return null;
+      }
+
+      var firstFocusableCell = findFirstFocusableCell(row);
+      if (firstFocusableCell === null || firstFocusableCell >= cell) {
+        return null;
+      }
+
+      var prev = {
+        "row": row,
+        "cell": firstFocusableCell,
+        "posX": firstFocusableCell
+      };
+      var pos;
+      while (true) {
+        pos = gotoRight(prev.row, prev.cell, prev.posX);
+        if (!pos) {
+          return null;
+        }
+        if (pos.cell >= cell) {
+          return prev;
+        }
+        prev = pos;
+      }
+    }
+
+    function gotoDown(row, cell, posX) {
+      var prevCell;
+      while (true) {
+        if (++row >= getDataLength() + (options.enableAddRow ? 1 : 0)) {
+          return null;
+        }
+
+        prevCell = cell = 0;
+        while (cell <= posX) {
+          prevCell = cell;
+          cell += getColspan(row, cell);
+        }
+
+        if (canCellBeActive(row, prevCell)) {
+          return {
+            "row": row,
+            "cell": prevCell,
+            "posX": posX
+          };
+        }
+      }
+    }
+
+    function gotoUp(row, cell, posX) {
+      var prevCell;
+      while (true) {
+        if (--row < 0) {
+          return null;
+        }
+
+        prevCell = cell = 0;
+        while (cell <= posX) {
+          prevCell = cell;
+          cell += getColspan(row, cell);
+        }
+
+        if (canCellBeActive(row, prevCell)) {
+          return {
+            "row": row,
+            "cell": prevCell,
+            "posX": posX
+          };
+        }
+      }
+    }
+
+    function gotoNext(row, cell, posX) {
+      if (row == null && cell == null) {
+        row = cell = posX = 0;
+        if (canCellBeActive(row, cell)) {
+          return {
+            "row": row,
+            "cell": cell,
+            "posX": cell
+          };
+        }
+      }
+
+      var pos = gotoRight(row, cell, posX);
+      if (pos) {
+        return pos;
+      }
+
+      var firstFocusableCell = null;
+      while (++row < getDataLength() + (options.enableAddRow ? 1 : 0)) {
+        firstFocusableCell = findFirstFocusableCell(row);
+        if (firstFocusableCell !== null) {
+          return {
+            "row": row,
+            "cell": firstFocusableCell,
+            "posX": firstFocusableCell
+          };
+        }
+      }
+      return null;
+    }
+
+    function gotoPrev(row, cell, posX) {
+      if (row == null && cell == null) {
+        row = getDataLength() + (options.enableAddRow ? 1 : 0) - 1;
+        cell = posX = columns.length - 1;
+        if (canCellBeActive(row, cell)) {
+          return {
+            "row": row,
+            "cell": cell,
+            "posX": cell
+          };
+        }
+      }
+
+      var pos;
+      var lastSelectableCell;
+      while (!pos) {
+        pos = gotoLeft(row, cell, posX);
+        if (pos) {
+          break;
+        }
+        if (--row < 0) {
+          return null;
+        }
+
+        cell = 0;
+        lastSelectableCell = findLastFocusableCell(row);
+        if (lastSelectableCell !== null) {
+          pos = {
+            "row": row,
+            "cell": lastSelectableCell,
+            "posX": lastSelectableCell
+          };
+        }
+      }
+      return pos;
+    }
+
+    function navigateRight() {
+      return navigate("right");
+    }
+
+    function navigateLeft() {
+      return navigate("left");
+    }
+
+    function navigateDown() {
+      return navigate("down");
+    }
+
+    function navigateUp() {
+      return navigate("up");
+    }
+
+    function navigateNext() {
+      return navigate("next");
+    }
+
+    function navigatePrev() {
+      return navigate("prev");
+    }
+
+    /**
+     * @param {string} dir Navigation direction.
+     * @return {boolean} Whether navigation resulted in a change of active cell.
+     */
+    function navigate(dir) {
+      if (!options.enableCellNavigation) {
+        return false;
+      }
+
+      if (!activeCellNode && dir != "prev" && dir != "next") {
+        return false;
+      }
+
+      if (!getEditorLock().commitCurrentEdit()) {
+        return true;
+      }
+      setFocus();
+
+      var tabbingDirections = {
+        "up": -1,
+        "down": 1,
+        "left": -1,
+        "right": 1,
+        "prev": -1,
+        "next": 1
+      };
+      tabbingDirection = tabbingDirections[dir];
+
+      var stepFunctions = {
+        "up": gotoUp,
+        "down": gotoDown,
+        "left": gotoLeft,
+        "right": gotoRight,
+        "prev": gotoPrev,
+        "next": gotoNext
+      };
+      var stepFn = stepFunctions[dir];
+      var pos = stepFn(activeRow, activeCell, activePosX);
+      if (pos) {
+        var isAddNewRow = (pos.row == getDataLength());
+        scrollCellIntoView(pos.row, pos.cell, !isAddNewRow);
+        setActiveCellInternal(getCellNode(pos.row, pos.cell), isAddNewRow || options.autoEdit);
+        activePosX = pos.posX;
+        return true;
+      } else {
+        setActiveCellInternal(getCellNode(activeRow, activeCell), (activeRow == getDataLength()) || options.autoEdit);
+        return false;
+      }
+    }
+
+    function getCellNode(row, cell) {
+      if (rowsCache[row]) {
+        ensureCellNodesInRowsCache(row);
+        return rowsCache[row].cellNodesByColumnIdx[cell];
+      }
+      return null;
+    }
+
+    function setActiveCell(row, cell) {
+      if (!initialized) { return; }
+      if (row > getDataLength() || row < 0 || cell >= columns.length || cell < 0) {
+        return;
+      }
+
+      if (!options.enableCellNavigation) {
+        return;
+      }
+
+      scrollCellIntoView(row, cell, false);
+      setActiveCellInternal(getCellNode(row, cell), false);
+    }
+
+    function canCellBeActive(row, cell) {
+      if (!options.enableCellNavigation || row >= getDataLength() + (options.enableAddRow ? 1 : 0) ||
+          row < 0 || cell >= columns.length || cell < 0) {
+        return false;
+      }
+
+      var rowMetadata = data.getItemMetadata && data.getItemMetadata(row);
+      if (rowMetadata && typeof rowMetadata.focusable === "boolean") {
+        return rowMetadata.focusable;
+      }
+
+      var columnMetadata = rowMetadata && rowMetadata.columns;
+      if (columnMetadata && columnMetadata[columns[cell].id] && typeof columnMetadata[columns[cell].id].focusable === "boolean") {
+        return columnMetadata[columns[cell].id].focusable;
+      }
+      if (columnMetadata && columnMetadata[cell] && typeof columnMetadata[cell].focusable === "boolean") {
+        return columnMetadata[cell].focusable;
+      }
+
+      return columns[cell].focusable;
+    }
+
+    function canCellBeSelected(row, cell) {
+      if (row >= getDataLength() || row < 0 || cell >= columns.length || cell < 0) {
+        return false;
+      }
+
+      var rowMetadata = data.getItemMetadata && data.getItemMetadata(row);
+      if (rowMetadata && typeof rowMetadata.selectable === "boolean") {
+        return rowMetadata.selectable;
+      }
+
+      var columnMetadata = rowMetadata && rowMetadata.columns && (rowMetadata.columns[columns[cell].id] || rowMetadata.columns[cell]);
+      if (columnMetadata && typeof columnMetadata.selectable === "boolean") {
+        return columnMetadata.selectable;
+      }
+
+      return columns[cell].selectable;
+    }
+
+    function gotoCell(row, cell, forceEdit) {
+      if (!initialized) { return; }
+      if (!canCellBeActive(row, cell)) {
+        return;
+      }
+
+      if (!getEditorLock().commitCurrentEdit()) {
+        return;
+      }
+
+      scrollCellIntoView(row, cell, false);
+
+      var newCell = getCellNode(row, cell);
+
+      // if selecting the 'add new' row, start editing right away
+      setActiveCellInternal(newCell, forceEdit || (row === getDataLength()) || options.autoEdit);
+
+      // if no editor was created, set the focus back on the grid
+      if (!currentEditor) {
+        setFocus();
+      }
+    }
+
+
+    //////////////////////////////////////////////////////////////////////////////////////////////
+    // IEditor implementation for the editor lock
+
+    function commitCurrentEdit() {
+      var item = getDataItem(activeRow);
+      var column = columns[activeCell];
+
+      if (currentEditor) {
+        if (currentEditor.isValueChanged()) {
+          var validationResults = currentEditor.validate();
+
+          if (validationResults.valid) {
+            if (activeRow < getDataLength()) {
+              var editCommand = {
+                row: activeRow,
+                cell: activeCell,
+                editor: currentEditor,
+                serializedValue: currentEditor.serializeValue(),
+                prevSerializedValue: serializedEditorValue,
+                execute: function () {
+                  this.editor.applyValue(item, this.serializedValue);
+                  updateRow(this.row);
+                },
+                undo: function () {
+                  this.editor.applyValue(item, this.prevSerializedValue);
+                  updateRow(this.row);
+                }
+              };
+
+              if (options.editCommandHandler) {
+                makeActiveCellNormal();
+                options.editCommandHandler(item, column, editCommand);
+              } else {
+                editCommand.execute();
+                makeActiveCellNormal();
+              }
+
+              trigger(self.onCellChange, {
+                row: activeRow,
+                cell: activeCell,
+                item: item
+              });
+            } else {
+              var newItem = {};
+              currentEditor.applyValue(newItem, currentEditor.serializeValue());
+              makeActiveCellNormal();
+              trigger(self.onAddNewRow, {item: newItem, column: column});
+            }
+
+            // check whether the lock has been re-acquired by event handlers
+            return !getEditorLock().isActive();
+          } else {
+            // Re-add the CSS class to trigger transitions, if any.
+            $(activeCellNode).removeClass("invalid");
+            $(activeCellNode).width();  // force layout
+            $(activeCellNode).addClass("invalid");
+
+            trigger(self.onValidationError, {
+              editor: currentEditor,
+              cellNode: activeCellNode,
+              validationResults: validationResults,
+              row: activeRow,
+              cell: activeCell,
+              column: column
+            });
+
+            currentEditor.focus();
+            return false;
+          }
+        }
+
+        makeActiveCellNormal();
+      }
+      return true;
+    }
+
+    function cancelCurrentEdit() {
+      makeActiveCellNormal();
+      return true;
+    }
+
+    function rowsToRanges(rows) {
+      var ranges = [];
+      var lastCell = columns.length - 1;
+      for (var i = 0; i < rows.length; i++) {
+        ranges.push(new Slick.Range(rows[i], 0, rows[i], lastCell));
+      }
+      return ranges;
+    }
+
+    function getSelectedRows() {
+      if (!selectionModel) {
+        throw "Selection model is not set";
+      }
+      return selectedRows;
+    }
+
+    function setSelectedRows(rows) {
+      if (!selectionModel) {
+        throw "Selection model is not set";
+      }
+      selectionModel.setSelectedRanges(rowsToRanges(rows));
+    }
+
+
+    //////////////////////////////////////////////////////////////////////////////////////////////
+    // Debug
+
+    this.debug = function () {
+      var s = "";
+
+      s += ("\n" + "counter_rows_rendered:  " + counter_rows_rendered);
+      s += ("\n" + "counter_rows_removed:  " + counter_rows_removed);
+      s += ("\n" + "renderedRows:  " + renderedRows);
+      s += ("\n" + "numVisibleRows:  " + numVisibleRows);
+      s += ("\n" + "maxSupportedCssHeight:  " + maxSupportedCssHeight);
+      s += ("\n" + "n(umber of pages):  " + n);
+      s += ("\n" + "(current) page:  " + page);
+      s += ("\n" + "page height (ph):  " + ph);
+      s += ("\n" + "vScrollDir:  " + vScrollDir);
+
+      alert(s);
+    };
+
+    // a debug helper to be able to access private members
+    this.eval = function (expr) {
+      return eval(expr);
+    };
+
+    //////////////////////////////////////////////////////////////////////////////////////////////
+    // Public API
+
+    $.extend(this, {
+      "slickGridVersion": "2.1",
+
+      // Events
+      "onScroll": new Slick.Event(),
+      "onSort": new Slick.Event(),
+      "onHeaderMouseEnter": new Slick.Event(),
+      "onHeaderMouseLeave": new Slick.Event(),
+      "onHeaderContextMenu": new Slick.Event(),
+      "onHeaderClick": new Slick.Event(),
+      "onHeaderCellRendered": new Slick.Event(),
+      "onBeforeHeaderCellDestroy": new Slick.Event(),
+      "onHeaderRowCellRendered": new Slick.Event(),
+      "onBeforeHeaderRowCellDestroy": new Slick.Event(),
+      "onMouseEnter": new Slick.Event(),
+      "onMouseLeave": new Slick.Event(),
+      "onClick": new Slick.Event(),
+      "onDblClick": new Slick.Event(),
+      "onContextMenu": new Slick.Event(),
+      "onKeyDown": new Slick.Event(),
+      "onAddNewRow": new Slick.Event(),
+      "onValidationError": new Slick.Event(),
+      "onViewportChanged": new Slick.Event(),
+      "onColumnsReordered": new Slick.Event(),
+      "onColumnsResized": new Slick.Event(),
+      "onCellChange": new Slick.Event(),
+      "onBeforeEditCell": new Slick.Event(),
+      "onBeforeCellEditorDestroy": new Slick.Event(),
+      "onBeforeDestroy": new Slick.Event(),
+      "onActiveCellChanged": new Slick.Event(),
+      "onActiveCellPositionChanged": new Slick.Event(),
+      "onDragInit": new Slick.Event(),
+      "onDragStart": new Slick.Event(),
+      "onDrag": new Slick.Event(),
+      "onDragEnd": new Slick.Event(),
+      "onSelectedRowsChanged": new Slick.Event(),
+      "onCellCssStylesChanged": new Slick.Event(),
+
+      // Methods
+      "registerPlugin": registerPlugin,
+      "unregisterPlugin": unregisterPlugin,
+      "getColumns": getColumns,
+      "setColumns": setColumns,
+      "getColumnIndex": getColumnIndex,
+      "updateColumnHeader": updateColumnHeader,
+      "setSortColumn": setSortColumn,
+      "setSortColumns": setSortColumns,
+      "getSortColumns": getSortColumns,
+      "autosizeColumns": autosizeColumns,
+      "getOptions": getOptions,
+      "setOptions": setOptions,
+      "getData": getData,
+      "getDataLength": getDataLength,
+      "getDataItem": getDataItem,
+      "setData": setData,
+      "getSelectionModel": getSelectionModel,
+      "setSelectionModel": setSelectionModel,
+      "getSelectedRows": getSelectedRows,
+      "setSelectedRows": setSelectedRows,
+      "getContainerNode": getContainerNode,
+
+      "render": render,
+      "invalidate": invalidate,
+      "invalidateRow": invalidateRow,
+      "invalidateRows": invalidateRows,
+      "invalidateAllRows": invalidateAllRows,
+      "updateCell": updateCell,
+      "updateRow": updateRow,
+      "getViewport": getVisibleRange,
+      "getRenderedRange": getRenderedRange,
+      "resizeCanvas": resizeCanvas,
+      "updateRowCount": updateRowCount,
+      "scrollRowIntoView": scrollRowIntoView,
+      "scrollRowToTop": scrollRowToTop,
+      "scrollCellIntoView": scrollCellIntoView,
+      "getCanvasNode": getCanvasNode,
+      "focus": setFocus,
+
+      "getCellFromPoint": getCellFromPoint,
+      "getCellFromEvent": getCellFromEvent,
+      "getActiveCell": getActiveCell,
+      "setActiveCell": setActiveCell,
+      "getActiveCellNode": getActiveCellNode,
+      "getActiveCellPosition": getActiveCellPosition,
+      "resetActiveCell": resetActiveCell,
+      "editActiveCell": makeActiveCellEditable,
+      "getCellEditor": getCellEditor,
+      "getCellNode": getCellNode,
+      "getCellNodeBox": getCellNodeBox,
+      "canCellBeSelected": canCellBeSelected,
+      "canCellBeActive": canCellBeActive,
+      "navigatePrev": navigatePrev,
+      "navigateNext": navigateNext,
+      "navigateUp": navigateUp,
+      "navigateDown": navigateDown,
+      "navigateLeft": navigateLeft,
+      "navigateRight": navigateRight,
+      "gotoCell": gotoCell,
+      "getTopPanel": getTopPanel,
+      "setTopPanelVisibility": setTopPanelVisibility,
+      "setHeaderRowVisibility": setHeaderRowVisibility,
+      "getHeaderRow": getHeaderRow,
+      "getHeaderRowColumn": getHeaderRowColumn,
+      "getGridPosition": getGridPosition,
+      "flashCell": flashCell,
+      "addCellCssStyles": addCellCssStyles,
+      "setCellCssStyles": setCellCssStyles,
+      "removeCellCssStyles": removeCellCssStyles,
+      "getCellCssStyles": getCellCssStyles,
+
+      "init": finishInitialization,
+      "destroy": destroy,
+
+      // IEditor implementation
+      "getEditorLock": getEditorLock,
+      "getEditController": getEditController
+    });
+
+    init();
+  }
+}(jQuery));

common/static/js/vendor/slick.groupitemmetadataprovider.js

@@ -0,0 +1,144 @@
+(function ($) {
+  $.extend(true, window, {
+    Slick: {
+      Data: {
+        GroupItemMetadataProvider: GroupItemMetadataProvider
+      }
+    }
+  });
+
+
+  /***
+   * Provides item metadata for group (Slick.Group) and totals (Slick.Totals) rows produced by the DataView.
+   * This metadata overrides the default behavior and formatting of those rows so that they appear and function
+   * correctly when processed by the grid.
+   *
+   * This class also acts as a grid plugin providing event handlers to expand & collapse groups.
+   * If "grid.registerPlugin(...)" is not called, expand & collapse will not work.
+   *
+   * @class GroupItemMetadataProvider
+   * @module Data
+   * @namespace Slick.Data
+   * @constructor
+   * @param options
+   */
+  function GroupItemMetadataProvider(options) {
+    var _grid;
+    var _defaults = {
+      groupCssClass: "slick-group",
+      groupTitleCssClass: "slick-group-title",
+      totalsCssClass: "slick-group-totals",
+      groupFocusable: true,
+      totalsFocusable: false,
+      toggleCssClass: "slick-group-toggle",
+      toggleExpandedCssClass: "expanded",
+      toggleCollapsedCssClass: "collapsed",
+      enableExpandCollapse: true
+    };
+
+    options = $.extend(true, {}, _defaults, options);
+
+
+    function defaultGroupCellFormatter(row, cell, value, columnDef, item) {
+      if (!options.enableExpandCollapse) {
+        return item.title;
+      }
+
+      var indentation = item.level * 15 + "px";
+
+      return "<span class='" + options.toggleCssClass + " " +
+          (item.collapsed ? options.toggleCollapsedCssClass : options.toggleExpandedCssClass) +
+          "' style='margin-left:" + indentation +"'>" +
+          "</span>" +
+          "<span class='" + options.groupTitleCssClass + "' level='" + item.level + "'>" +
+            item.title +
+          "</span>";
+    }
+
+    function defaultTotalsCellFormatter(row, cell, value, columnDef, item) {
+      return (columnDef.groupTotalsFormatter && columnDef.groupTotalsFormatter(item, columnDef)) || "";
+    }
+
+
+    function init(grid) {
+      _grid = grid;
+      _grid.onClick.subscribe(handleGridClick);
+      _grid.onKeyDown.subscribe(handleGridKeyDown);
+
+    }
+
+    function destroy() {
+      if (_grid) {
+        _grid.onClick.unsubscribe(handleGridClick);
+        _grid.onKeyDown.unsubscribe(handleGridKeyDown);
+      }
+    }
+
+    function handleGridClick(e, args) {
+      var item = this.getDataItem(args.row);
+      if (item && item instanceof Slick.Group && $(e.target).hasClass(options.toggleCssClass)) {
+        if (item.collapsed) {
+          this.getData().expandGroup(item.groupingKey);
+        } else {
+          this.getData().collapseGroup(item.groupingKey);
+        }
+
+        e.stopImmediatePropagation();
+        e.preventDefault();
+      }
+    }
+
+    // TODO:  add -/+ handling
+    function handleGridKeyDown(e, args) {
+      if (options.enableExpandCollapse && (e.which == $.ui.keyCode.SPACE)) {
+        var activeCell = this.getActiveCell();
+        if (activeCell) {
+          var item = this.getDataItem(activeCell.row);
+          if (item && item instanceof Slick.Group) {
+            if (item.collapsed) {
+              this.getData().expandGroup(item.groupingKey);
+            } else {
+              this.getData().collapseGroup(item.groupingKey);
+            }
+
+            e.stopImmediatePropagation();
+            e.preventDefault();
+          }
+        }
+      }
+    }
+
+    function getGroupRowMetadata(item) {
+      return {
+        selectable: false,
+        focusable: options.groupFocusable,
+        cssClasses: options.groupCssClass,
+        columns: {
+          0: {
+            colspan: "*",
+            formatter: defaultGroupCellFormatter,
+            editor: null
+          }
+        }
+      };
+    }
+
+    function getTotalsRowMetadata(item) {
+      return {
+        selectable: false,
+        focusable: options.totalsFocusable,
+        cssClasses: options.totalsCssClass,
+        formatter: defaultTotalsCellFormatter,
+        editor: null
+      };
+    }
+
+
+    return {
+      "init": init,
+      "destroy": destroy,
+      "getGroupRowMetadata": getGroupRowMetadata,
+      "getTotalsRowMetadata": getTotalsRowMetadata
+    };
+  }
+})(jQuery);

common/static/js/vendor/slick.remotemodel.js

@@ -0,0 +1,164 @@
+(function ($) {
+  /***
+   * A sample AJAX data store implementation.
+   * Right now, it's hooked up to load all Apple-related Digg stories, but can
+   * easily be extended to support and JSONP-compatible backend that accepts paging parameters.
+   */
+  function RemoteModel() {
+    // private
+    var PAGESIZE = 50;
+    var data = {length: 0};
+    var searchstr = "apple";
+    var sortcol = null;
+    var sortdir = 1;
+    var h_request = null;
+    var req = null; // ajax request
+
+    // events
+    var onDataLoading = new Slick.Event();
+    var onDataLoaded = new Slick.Event();
+
+
+    function init() {
+    }
+
+
+    function isDataLoaded(from, to) {
+      for (var i = from; i <= to; i++) {
+        if (data[i] == undefined || data[i] == null) {
+          return false;
+        }
+      }
+
+      return true;
+    }
+
+
+    function clear() {
+      for (var key in data) {
+        delete data[key];
+      }
+      data.length = 0;
+    }
+
+
+    function ensureData(from, to) {
+      if (req) {
+        req.abort();
+        for (var i = req.fromPage; i <= req.toPage; i++)
+          data[i * PAGESIZE] = undefined;
+      }
+
+      if (from < 0) {
+        from = 0;
+      }
+
+      var fromPage = Math.floor(from / PAGESIZE);
+      var toPage = Math.floor(to / PAGESIZE);
+
+      while (data[fromPage * PAGESIZE] !== undefined && fromPage < toPage)
+        fromPage++;
+
+      while (data[toPage * PAGESIZE] !== undefined && fromPage < toPage)
+        toPage--;
+
+      if (fromPage > toPage || ((fromPage == toPage) && data[fromPage * PAGESIZE] !== undefined)) {
+        // TODO:  look-ahead
+        return;
+      }
+
+      var url = "http://services.digg.com/search/stories?query=" + searchstr + "&offset=" + (fromPage * PAGESIZE) + "&count=" + (((toPage - fromPage) * PAGESIZE) + PAGESIZE) + "&appkey=http://slickgrid.googlecode.com&type=javascript";
+
+      switch (sortcol) {
+        case "diggs":
+          url += ("&sort=" + ((sortdir > 0) ? "digg_count-asc" : "digg_count-desc"));
+          break;
+      }
+
+      if (h_request != null) {
+        clearTimeout(h_request);
+      }
+
+      h_request = setTimeout(function () {
+        for (var i = fromPage; i <= toPage; i++)
+          data[i * PAGESIZE] = null; // null indicates a 'requested but not available yet'
+
+        onDataLoading.notify({from: from, to: to});
+
+        req = $.jsonp({
+          url: url,
+          callbackParameter: "callback",
+          cache: true, // Digg doesn't accept the autogenerated cachebuster param
+          success: onSuccess,
+          error: function () {
+            onError(fromPage, toPage)
+          }
+        });
+        req.fromPage = fromPage;
+        req.toPage = toPage;
+      }, 50);
+    }
+
+
+    function onError(fromPage, toPage) {
+      alert("error loading pages " + fromPage + " to " + toPage);
+    }
+
+    function onSuccess(resp) {
+      var from = this.fromPage * PAGESIZE, to = from + resp.count;
+      data.length = parseInt(resp.total);
+
+      for (var i = 0; i < resp.stories.length; i++) {
+        data[from + i] = resp.stories[i];
+        data[from + i].index = from + i;
+      }
+
+      req = null;
+
+      onDataLoaded.notify({from: from, to: to});
+    }
+
+
+    function reloadData(from, to) {
+      for (var i = from; i <= to; i++)
+        delete data[i];
+
+      ensureData(from, to);
+    }
+
+
+    function setSort(column, dir) {
+      sortcol = column;
+      sortdir = dir;
+      clear();
+    }
+
+    function setSearch(str) {
+      searchstr = str;
+      clear();
+    }
+
+
+    init();
+
+    return {
+      // properties
+      "data": data,
+
+      // methods
+      "clear": clear,
+      "isDataLoaded": isDataLoaded,
+      "ensureData": ensureData,
+      "reloadData": reloadData,
+      "setSort": setSort,
+      "setSearch": setSearch,
+
+      // events
+      "onDataLoading": onDataLoading,
+      "onDataLoaded": onDataLoaded
+    };
+  }
+
+  // Slick.Data.RemoteModel
+  $.extend(true, window, { Slick: { Data: { RemoteModel: RemoteModel }}});
+})(jQuery);

lms/static/coffee/src/instructor_dashboard.coffee

@@ -73,7 +73,28 @@ setup_section_data_download = (section) ->
       location.href = url
     else
       $.getJSON url, (data) ->
-        section.find('.dumped-data-display').text JSON.stringify(data)
+        display = section.find('.dumped-data-display')
+        display.text JSON.stringify(data)
+        log data
+
+        # setup SlickGrid
+
+        options = enableCellNavigation: true, enableColumnReorder: false
+        # columns = [{id: feature, name: feature} for feature in data.queried_features]
+
+        log options
+        # log columns
+
+        # new Slick.Grid(display, data.students, columns, options)
+
+        data = [{'label1': 'val1,1', 'label2': 'val2,1'}, {'label1': 'val1,2', 'label2': 'val2,2'}]
+        columns = [{id: 'label1', name: 'Label One', width: 80, minWidth: 80}, {id: 'label2', name: 'Label Two'}]
+
+        log 'columns', columns
+        log 'data', data
+
+        grid = new Slick.Grid(display, data, columns, options)
+        grid.autosizeColumns()
 
   grade_config_btn = section.find("input[name='dump-gradeconf']'")
   grade_config_btn.click (e) ->