286 lines
12 KiB
JavaScript
286 lines
12 KiB
JavaScript
define(["js/views/validation", "codemirror", "underscore", "jquery", "jquery.ui", "tzAbbr", "js/models/uploads",
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"js/views/uploads", "js/utils/change_on_enter", "jquery.timepicker", "date"],
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function(ValidatingView, CodeMirror, _, $, ui, tzAbbr, FileUploadModel, FileUploadDialog, TriggerChangeEventOnEnter) {
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var DetailsView = ValidatingView.extend({
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// Model class is CMS.Models.Settings.CourseDetails
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events : {
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"input input" : "updateModel",
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"input textarea" : "updateModel",
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// Leaving change in as fallback for older browsers
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"change input" : "updateModel",
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"change textarea" : "updateModel",
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'click .remove-course-introduction-video' : "removeVideo",
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'focus #course-overview' : "codeMirrorize",
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'mouseover #timezone' : "updateTime",
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// would love to move to a general superclass, but event hashes don't inherit in backbone :-(
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'focus :input' : "inputFocus",
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'blur :input' : "inputUnfocus",
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'click .action-upload-image': "uploadImage"
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},
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initialize : function() {
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this.fileAnchorTemplate = _.template('<a href="<%= fullpath %>"> <i class="icon-file"></i><%= filename %></a>');
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// fill in fields
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this.$el.find("#course-organization").val(this.model.get('org'));
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this.$el.find("#course-number").val(this.model.get('course_id'));
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this.$el.find("#course-name").val(this.model.get('run'));
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this.$el.find('.set-date').datepicker({ 'dateFormat': 'm/d/yy' });
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// Avoid showing broken image on mistyped/nonexistent image
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this.$el.find('img.course-image').error(function() {
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$(this).hide();
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});
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this.$el.find('img.course-image').load(function() {
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$(this).show();
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});
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this.$el.find('#timezone').html("(" + tzAbbr() + ")");
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this.listenTo(this.model, 'invalid', this.handleValidationError);
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this.listenTo(this.model, 'change', this.showNotificationBar);
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this.selectorToField = _.invert(this.fieldToSelectorMap);
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},
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render: function() {
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this.setupDatePicker('start_date');
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this.setupDatePicker('end_date');
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this.setupDatePicker('enrollment_start');
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this.setupDatePicker('enrollment_end');
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this.$el.find('#' + this.fieldToSelectorMap['overview']).val(this.model.get('overview'));
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this.codeMirrorize(null, $('#course-overview')[0]);
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this.$el.find('#' + this.fieldToSelectorMap['short_description']).val(this.model.get('short_description'));
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this.$el.find('.current-course-introduction-video iframe').attr('src', this.model.videosourceSample());
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this.$el.find('#' + this.fieldToSelectorMap['intro_video']).val(this.model.get('intro_video') || '');
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if (this.model.has('intro_video')) {
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this.$el.find('.remove-course-introduction-video').show();
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}
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else this.$el.find('.remove-course-introduction-video').hide();
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this.$el.find('#' + this.fieldToSelectorMap['effort']).val(this.model.get('effort'));
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var imageURL = this.model.get('course_image_asset_path');
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this.$el.find('#course-image-url').val(imageURL);
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this.$el.find('#course-image').attr('src', imageURL);
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return this;
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},
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fieldToSelectorMap : {
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'start_date' : "course-start",
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'end_date' : 'course-end',
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'enrollment_start' : 'enrollment-start',
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'enrollment_end' : 'enrollment-end',
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'overview' : 'course-overview',
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'short_description' : 'course-short-description',
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'intro_video' : 'course-introduction-video',
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'effort' : "course-effort",
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'course_image_asset_path': 'course-image-url'
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},
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updateTime : function(e) {
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var now = new Date();
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var hours = now.getHours();
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var minutes = now.getMinutes();
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$(e.currentTarget).attr('title', (hours % 12 === 0 ? 12 : hours % 12) + ":" + (minutes < 10 ? "0" : "") +
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now.getMinutes() + (hours < 12 ? "am" : "pm") + " (current local time)");
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},
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setupDatePicker: function (fieldName) {
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var cacheModel = this.model;
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var div = this.$el.find('#' + this.fieldToSelectorMap[fieldName]);
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var datefield = $(div).find("input:.date");
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var timefield = $(div).find("input:.time");
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var cachethis = this;
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var setfield = function () {
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var date = datefield.datepicker('getDate');
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if (date) {
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var time = timefield.timepicker("getSecondsFromMidnight");
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if (!time) {
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time = 0;
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}
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var newVal = new Date(date.getTime() + time * 1000);
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if (!cacheModel.has(fieldName) || cacheModel.get(fieldName).getTime() !== newVal.getTime()) {
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cachethis.clearValidationErrors();
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cachethis.setAndValidate(fieldName, newVal);
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}
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}
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else {
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// Clear date (note that this clears the time as well, as date and time are linked).
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// Note also that the validation logic prevents us from clearing the start date
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// (start date is required by the back end).
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cachethis.clearValidationErrors();
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cachethis.setAndValidate(fieldName, null);
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}
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};
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// instrument as date and time pickers
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timefield.timepicker({'timeFormat' : 'H:i'});
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datefield.datepicker();
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// Using the change event causes setfield to be triggered twice, but it is necessary
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// to pick up when the date is typed directly in the field.
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datefield.change(setfield).keyup(TriggerChangeEventOnEnter);
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timefield.on('changeTime', setfield);
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timefield.on('input', setfield);
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datefield.datepicker('setDate', this.model.get(fieldName));
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// timepicker doesn't let us set null, so check that we have a time
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if (this.model.has(fieldName)) {
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timefield.timepicker('setTime', this.model.get(fieldName));
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} // but reset the field either way
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else {
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timefield.val('');
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}
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},
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updateModel: function(event) {
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switch (event.currentTarget.id) {
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case 'course-image-url':
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this.setField(event);
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var url = $(event.currentTarget).val();
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var image_name = _.last(url.split('/'));
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this.model.set('course_image_name', image_name);
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// Wait to set the image src until the user stops typing
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clearTimeout(this.imageTimer);
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this.imageTimer = setTimeout(function() {
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$('#course-image').attr('src', $(event.currentTarget).val());
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}, 1000);
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break;
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case 'course-effort':
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this.setField(event);
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break;
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case 'course-short-description':
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this.setField(event);
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break;
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// Don't make the user reload the page to check the Youtube ID.
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// Wait for a second to load the video, avoiding egregious AJAX calls.
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case 'course-introduction-video':
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this.clearValidationErrors();
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var previewsource = this.model.set_videosource($(event.currentTarget).val());
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clearTimeout(this.videoTimer);
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this.videoTimer = setTimeout(_.bind(function() {
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this.$el.find(".current-course-introduction-video iframe").attr("src", previewsource);
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if (this.model.has('intro_video')) {
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this.$el.find('.remove-course-introduction-video').show();
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}
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else {
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this.$el.find('.remove-course-introduction-video').hide();
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}
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}, this), 1000);
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break;
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default: // Everything else is handled by datepickers and CodeMirror.
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break;
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}
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},
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removeVideo: function(event) {
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event.preventDefault();
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if (this.model.has('intro_video')) {
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this.model.set_videosource(null);
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this.$el.find(".current-course-introduction-video iframe").attr("src", "");
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this.$el.find('#' + this.fieldToSelectorMap['intro_video']).val("");
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this.$el.find('.remove-course-introduction-video').hide();
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}
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},
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codeMirrors : {},
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codeMirrorize: function (e, forcedTarget) {
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var thisTarget;
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if (forcedTarget) {
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thisTarget = forcedTarget;
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thisTarget.id = $(thisTarget).attr('id');
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} else if (e !== null) {
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thisTarget = e.currentTarget;
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} else
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{
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// e and forcedTarget can be null so don't deference it
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// This is because in cases where we have a marketing site
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// we don't display the codeMirrors for editing the marketing
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// materials, except we do need to show the 'set course image'
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// workflow. So in this case e = forcedTarget = null.
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return;
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}
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if (!this.codeMirrors[thisTarget.id]) {
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var cachethis = this;
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var field = this.selectorToField[thisTarget.id];
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this.codeMirrors[thisTarget.id] = CodeMirror.fromTextArea(thisTarget, {
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mode: "text/html", lineNumbers: true, lineWrapping: true});
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this.codeMirrors[thisTarget.id].on('change', function (mirror) {
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mirror.save();
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cachethis.clearValidationErrors();
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var newVal = mirror.getValue();
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if (cachethis.model.get(field) != newVal) {
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cachethis.setAndValidate(field, newVal);
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}
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});
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}
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},
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revertView: function() {
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// Make sure that the CodeMirror instance has the correct
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// data from its corresponding textarea
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var self = this;
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this.model.fetch({
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success: function() {
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self.render();
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_.each(self.codeMirrors,
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function(mirror) {
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var ele = mirror.getTextArea();
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var field = self.selectorToField[ele.id];
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mirror.setValue(self.model.get(field));
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});
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},
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reset: true,
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silent: true});
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},
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setAndValidate: function(attr, value) {
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// If we call model.set() with {validate: true}, model fields
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// will not be set if validation fails. This puts the UI and
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// the model in an inconsistent state, and causes us to not
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// see the right validation errors the next time validate() is
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// called on the model. So we set *without* validating, then
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// call validate ourselves.
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this.model.set(attr, value);
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this.model.isValid();
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},
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showNotificationBar: function() {
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// We always call showNotificationBar with the same args, just
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// delegate to superclass
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ValidatingView.prototype.showNotificationBar.call(this,
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this.save_message,
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_.bind(this.saveView, this),
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_.bind(this.revertView, this));
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},
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uploadImage: function(event) {
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event.preventDefault();
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var upload = new FileUploadModel({
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title: gettext("Upload your course image."),
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message: gettext("Files must be in JPEG or PNG format."),
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mimeTypes: ['image/jpeg', 'image/png']
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});
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var self = this;
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var modal = new FileUploadDialog({
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model: upload,
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onSuccess: function(response) {
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var options = {
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'course_image_name': response.asset.display_name,
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'course_image_asset_path': response.asset.url
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};
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self.model.set(options);
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self.render();
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$('#course-image').attr('src', self.model.get('course_image_asset_path'));
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}
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});
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modal.show();
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}
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});
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return DetailsView;
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}); // end define()
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