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files for wmd editor

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This commit is contained in:
Rocky Duan
2012-07-25 20:47:11 -04:00
parent 9f1353b027
commit 63633ae1d3
9 changed files with 7266 additions and 0 deletions
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5
lms/static/coffee/src/customwmd.coffee Normal file
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$ ->
converter = Markdown.getSanitizingConverter()
editor = new Markdown.Editor(converter)
converter.hooks.chain "preConversion", removeMath
editor.run()

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lms/static/js/vendor/Markdown.Converter.js vendored Normal file
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var Markdown;
if (typeof exports === "object" && typeof require === "function") // we're in a CommonJS (e.g. Node.js) module
Markdown = exports;
else
Markdown = {};
// The following text is included for historical reasons, but should
// be taken with a pinch of salt; it's not all true anymore.
//
// Wherever possible, Showdown is a straight, line-by-line port
// of the Perl version of Markdown.
//
// This is not a normal parser design; it's basically just a
// series of string substitutions. It's hard to read and
// maintain this way, but keeping Showdown close to the original
// design makes it easier to port new features.
//
// More importantly, Showdown behaves like markdown.pl in most
// edge cases. So web applications can do client-side preview
// in Javascript, and then build identical HTML on the server.
//
// This port needs the new RegExp functionality of ECMA 262,
// 3rd Edition (i.e. Javascript 1.5). Most modern web browsers
// should do fine. Even with the new regular expression features,
// We do a lot of work to emulate Perl's regex functionality.
// The tricky changes in this file mostly have the "attacklab:"
// label. Major or self-explanatory changes don't.
//
// Smart diff tools like Araxis Merge will be able to match up
// this file with markdown.pl in a useful way. A little tweaking
// helps: in a copy of markdown.pl, replace "#" with "//" and
// replace "$text" with "text". Be sure to ignore whitespace
// and line endings.
//
//
// Usage:
//
// var text = "Markdown *rocks*.";
//
// var converter = new Markdown.Converter();
// var html = converter.makeHtml(text);
//
// alert(html);
//
// Note: move the sample code to the bottom of this
// file before uncommenting it.
//
(function () {
function identity(x) { return x; }
function returnFalse(x) { return false; }
function HookCollection() { }
HookCollection.prototype = {
chain: function (hookname, func) {
var original = this[hookname];
if (!original)
throw new Error("unknown hook " + hookname);
if (original === identity)
this[hookname] = func;
else
this[hookname] = function (x) { return func(original(x)); }
},
set: function (hookname, func) {
if (!this[hookname])
throw new Error("unknown hook " + hookname);
this[hookname] = func;
},
addNoop: function (hookname) {
this[hookname] = identity;
},
addFalse: function (hookname) {
this[hookname] = returnFalse;
}
};
Markdown.HookCollection = HookCollection;
// g_urls and g_titles allow arbitrary user-entered strings as keys. This
// caused an exception (and hence stopped the rendering) when the user entered
// e.g. [push] or [__proto__]. Adding a prefix to the actual key prevents this
// (since no builtin property starts with "s_"). See
// http://meta.stackoverflow.com/questions/64655/strange-wmd-bug
// (granted, switching from Array() to Object() alone would have left only __proto__
// to be a problem)
function SaveHash() { }
SaveHash.prototype = {
set: function (key, value) {
this["s_" + key] = value;
},
get: function (key) {
return this["s_" + key];
}
};
Markdown.Converter = function () {
var pluginHooks = this.hooks = new HookCollection();
pluginHooks.addNoop("plainLinkText"); // given a URL that was encountered by itself (without markup), should return the link text that's to be given to this link
pluginHooks.addNoop("preConversion"); // called with the orignal text as given to makeHtml. The result of this plugin hook is the actual markdown source that will be cooked
pluginHooks.addNoop("postConversion"); // called with the final cooked HTML code. The result of this plugin hook is the actual output of makeHtml
//
// Private state of the converter instance:
//
// Global hashes, used by various utility routines
var g_urls;
var g_titles;
var g_html_blocks;
// Used to track when we're inside an ordered or unordered list
// (see _ProcessListItems() for details):
var g_list_level;
this.makeHtml = function (text) {
//
// Main function. The order in which other subs are called here is
// essential. Link and image substitutions need to happen before
// _EscapeSpecialCharsWithinTagAttributes(), so that any *'s or _'s in the <a>
// and <img> tags get encoded.
//
// This will only happen if makeHtml on the same converter instance is called from a plugin hook.
// Don't do that.
if (g_urls)
throw new Error("Recursive call to converter.makeHtml");
// Create the private state objects.
g_urls = new SaveHash();
g_titles = new SaveHash();
g_html_blocks = [];
g_list_level = 0;
text = pluginHooks.preConversion(text);
// attacklab: Replace ~ with ~T
// This lets us use tilde as an escape char to avoid md5 hashes
// The choice of character is arbitray; anything that isn't
// magic in Markdown will work.
text = text.replace(/~/g, "~T");
// attacklab: Replace $ with ~D
// RegExp interprets $ as a special character
// when it's in a replacement string
text = text.replace(/\$/g, "~D");
// Standardize line endings
text = text.replace(/\r\n/g, "\n"); // DOS to Unix
text = text.replace(/\r/g, "\n"); // Mac to Unix
// Make sure text begins and ends with a couple of newlines:
text = "\n\n" + text + "\n\n";
// Convert all tabs to spaces.
text = _Detab(text);
// Strip any lines consisting only of spaces and tabs.
// This makes subsequent regexen easier to write, because we can
// match consecutive blank lines with /\n+/ instead of something
// contorted like /[ \t]*\n+/ .
text = text.replace(/^[ \t]+$/mg, "");
// Turn block-level HTML blocks into hash entries
text = _HashHTMLBlocks(text);
// Strip link definitions, store in hashes.
text = _StripLinkDefinitions(text);
text = _RunBlockGamut(text);
text = _UnescapeSpecialChars(text);
// attacklab: Restore dollar signs
text = text.replace(/~D/g, "$$");
// attacklab: Restore tildes
text = text.replace(/~T/g, "~");
text = pluginHooks.postConversion(text);
g_html_blocks = g_titles = g_urls = null;
return text;
};
function _StripLinkDefinitions(text) {
//
// Strips link definitions from text, stores the URLs and titles in
// hash references.
//
// Link defs are in the form: ^[id]: url "optional title"
/*
text = text.replace(/
^[ ]{0,3}\[(.+)\]: // id = $1 attacklab: g_tab_width - 1
[ \t]*
\n? // maybe *one* newline
[ \t]*
<?(\S+?)>? // url = $2
(?=\s|$) // lookahead for whitespace instead of the lookbehind removed below
[ \t]*
\n? // maybe one newline
[ \t]*
( // (potential) title = $3
(\n*) // any lines skipped = $4 attacklab: lookbehind removed
[ \t]+
["(]
(.+?) // title = $5
[")]
[ \t]*
)? // title is optional
(?:\n+|$)
/gm, function(){...});
*/
text = text.replace(/^[ ]{0,3}\[(.+)\]:[ \t]*\n?[ \t]*<?(\S+?)>?(?=\s|$)[ \t]*\n?[ \t]*((\n*)["(](.+?)[")][ \t]*)?(?:\n+)/gm,
function (wholeMatch, m1, m2, m3, m4, m5) {
m1 = m1.toLowerCase();
g_urls.set(m1, _EncodeAmpsAndAngles(m2)); // Link IDs are case-insensitive
if (m4) {
// Oops, found blank lines, so it's not a title.
// Put back the parenthetical statement we stole.
return m3;
} else if (m5) {
g_titles.set(m1, m5.replace(/"/g, "&quot;"));
}
// Completely remove the definition from the text
return "";
}
);
return text;
}
function _HashHTMLBlocks(text) {
// Hashify HTML blocks:
// We only want to do this for block-level HTML tags, such as headers,
// lists, and tables. That's because we still want to wrap <p>s around
// "paragraphs" that are wrapped in non-block-level tags, such as anchors,
// phrase emphasis, and spans. The list of tags we're looking for is
// hard-coded:
var block_tags_a = "p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|ins|del"
var block_tags_b = "p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math"
// First, look for nested blocks, e.g.:
// <div>
// <div>
// tags for inner block must be indented.
// </div>
// </div>
//
// The outermost tags must start at the left margin for this to match, and
// the inner nested divs must be indented.
// We need to do this before the next, more liberal match, because the next
// match will start at the first `<div>` and stop at the first `</div>`.
// attacklab: This regex can be expensive when it fails.
/*
text = text.replace(/
( // save in $1
^ // start of line (with /m)
<($block_tags_a) // start tag = $2
\b // word break
// attacklab: hack around khtml/pcre bug...
[^\r]*?\n // any number of lines, minimally matching
</\2> // the matching end tag
[ \t]* // trailing spaces/tabs
(?=\n+) // followed by a newline
) // attacklab: there are sentinel newlines at end of document
/gm,function(){...}};
*/
text = text.replace(/^(<(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|ins|del)\b[^\r]*?\n<\/\2>[ \t]*(?=\n+))/gm, hashElement);
//
// Now match more liberally, simply from `\n<tag>` to `</tag>\n`
//
/*
text = text.replace(/
( // save in $1
^ // start of line (with /m)
<($block_tags_b) // start tag = $2
\b // word break
// attacklab: hack around khtml/pcre bug...
[^\r]*? // any number of lines, minimally matching
.*</\2> // the matching end tag
[ \t]* // trailing spaces/tabs
(?=\n+) // followed by a newline
) // attacklab: there are sentinel newlines at end of document
/gm,function(){...}};
*/
text = text.replace(/^(<(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math)\b[^\r]*?.*<\/\2>[ \t]*(?=\n+)\n)/gm, hashElement);
// Special case just for <hr />. It was easier to make a special case than
// to make the other regex more complicated.
/*
text = text.replace(/
\n // Starting after a blank line
[ ]{0,3}
( // save in $1
(<(hr) // start tag = $2
\b // word break
([^<>])*?
\/?>) // the matching end tag
[ \t]*
(?=\n{2,}) // followed by a blank line
)
/g,hashElement);
*/
text = text.replace(/\n[ ]{0,3}((<(hr)\b([^<>])*?\/?>)[ \t]*(?=\n{2,}))/g, hashElement);
// Special case for standalone HTML comments:
/*
text = text.replace(/
\n\n // Starting after a blank line
[ ]{0,3} // attacklab: g_tab_width - 1
( // save in $1
<!
(--(?:|(?:[^>-]|-[^>])(?:[^-]|-[^-])*)--) // see http://www.w3.org/TR/html-markup/syntax.html#comments and http://meta.stackoverflow.com/q/95256
>
[ \t]*
(?=\n{2,}) // followed by a blank line
)
/g,hashElement);
*/
text = text.replace(/\n\n[ ]{0,3}(<!(--(?:|(?:[^>-]|-[^>])(?:[^-]|-[^-])*)--)>[ \t]*(?=\n{2,}))/g, hashElement);
// PHP and ASP-style processor instructions (<?...?> and <%...%>)
/*
text = text.replace(/
(?:
\n\n // Starting after a blank line
)
( // save in $1
[ ]{0,3} // attacklab: g_tab_width - 1
(?:
<([?%]) // $2
[^\r]*?
\2>
)
[ \t]*
(?=\n{2,}) // followed by a blank line
)
/g,hashElement);
*/
text = text.replace(/(?:\n\n)([ ]{0,3}(?:<([?%])[^\r]*?\2>)[ \t]*(?=\n{2,}))/g, hashElement);
return text;
}
function hashElement(wholeMatch, m1) {
var blockText = m1;
// Undo double lines
blockText = blockText.replace(/^\n+/, "");
// strip trailing blank lines
blockText = blockText.replace(/\n+$/g, "");
// Replace the element text with a marker ("~KxK" where x is its key)
blockText = "\n\n~K" + (g_html_blocks.push(blockText) - 1) + "K\n\n";
return blockText;
}
function _RunBlockGamut(text, doNotUnhash) {
//
// These are all the transformations that form block-level
// tags like paragraphs, headers, and list items.
//
text = _DoHeaders(text);
// Do Horizontal Rules:
var replacement = "<hr />\n";
text = text.replace(/^[ ]{0,2}([ ]?\*[ ]?){3,}[ \t]*$/gm, replacement);
text = text.replace(/^[ ]{0,2}([ ]?-[ ]?){3,}[ \t]*$/gm, replacement);
text = text.replace(/^[ ]{0,2}([ ]?_[ ]?){3,}[ \t]*$/gm, replacement);
text = _DoLists(text);
text = _DoCodeBlocks(text);
text = _DoBlockQuotes(text);
// We already ran _HashHTMLBlocks() before, in Markdown(), but that
// was to escape raw HTML in the original Markdown source. This time,
// we're escaping the markup we've just created, so that we don't wrap
// <p> tags around block-level tags.
text = _HashHTMLBlocks(text);
text = _FormParagraphs(text, doNotUnhash);
return text;
}
function _RunSpanGamut(text) {
//
// These are all the transformations that occur *within* block-level
// tags like paragraphs, headers, and list items.
//
text = _DoCodeSpans(text);
text = _EscapeSpecialCharsWithinTagAttributes(text);
text = _EncodeBackslashEscapes(text);
// Process anchor and image tags. Images must come first,
// because ![foo][f] looks like an anchor.
text = _DoImages(text);
text = _DoAnchors(text);
// Make links out of things like `<http://example.com/>`
// Must come after _DoAnchors(), because you can use < and >
// delimiters in inline links like [this](<url>).
text = _DoAutoLinks(text);
text = text.replace(/~P/g, "://"); // put in place to prevent autolinking; reset now
text = _EncodeAmpsAndAngles(text);
text = _DoItalicsAndBold(text);
// Do hard breaks:
text = text.replace(/ +\n/g, " <br>\n");
return text;
}
function _EscapeSpecialCharsWithinTagAttributes(text) {
//
// Within tags -- meaning between < and > -- encode [\ ` * _] so they
// don't conflict with their use in Markdown for code, italics and strong.
//
// Build a regex to find HTML tags and comments. See Friedl's
// "Mastering Regular Expressions", 2nd Ed., pp. 200-201.
// SE: changed the comment part of the regex
var regex = /(<[a-z\/!$]("[^"]*"|'[^']*'|[^'">])*>|<!(--(?:|(?:[^>-]|-[^>])(?:[^-]|-[^-])*)--)>)/gi;
text = text.replace(regex, function (wholeMatch) {
var tag = wholeMatch.replace(/(.)<\/?code>(?=.)/g, "$1`");
tag = escapeCharacters(tag, wholeMatch.charAt(1) == "!" ? "\\`*_/" : "\\`*_"); // also escape slashes in comments to prevent autolinking there -- http://meta.stackoverflow.com/questions/95987
return tag;
});
return text;
}
function _DoAnchors(text) {
//
// Turn Markdown link shortcuts into XHTML <a> tags.
//
//
// First, handle reference-style links: [link text] [id]
//
/*
text = text.replace(/
( // wrap whole match in $1
\[
(
(?:
\[[^\]]*\] // allow brackets nested one level
|
[^\[] // or anything else
)*
)
\]
[ ]? // one optional space
(?:\n[ ]*)? // one optional newline followed by spaces
\[
(.*?) // id = $3
\]
)
()()()() // pad remaining backreferences
/g, writeAnchorTag);
*/
text = text.replace(/(\[((?:\[[^\]]*\]|[^\[\]])*)\][ ]?(?:\n[ ]*)?\[(.*?)\])()()()()/g, writeAnchorTag);
//
// Next, inline-style links: [link text](url "optional title")
//
/*
text = text.replace(/
( // wrap whole match in $1
\[
(
(?:
\[[^\]]*\] // allow brackets nested one level
|
[^\[\]] // or anything else
)*
)
\]
\( // literal paren
[ \t]*
() // no id, so leave $3 empty
<?( // href = $4
(?:
\([^)]*\) // allow one level of (correctly nested) parens (think MSDN)
|
[^()\s]
)*?
)>?
[ \t]*
( // $5
(['"]) // quote char = $6
(.*?) // Title = $7
\6 // matching quote
[ \t]* // ignore any spaces/tabs between closing quote and )
)? // title is optional
\)
)
/g, writeAnchorTag);
*/
text = text.replace(/(\[((?:\[[^\]]*\]|[^\[\]])*)\]\([ \t]*()<?((?:\([^)]*\)|[^()\s])*?)>?[ \t]*((['"])(.*?)\6[ \t]*)?\))/g, writeAnchorTag);
//
// Last, handle reference-style shortcuts: [link text]
// These must come last in case you've also got [link test][1]
// or [link test](/foo)
//
/*
text = text.replace(/
( // wrap whole match in $1
\[
([^\[\]]+) // link text = $2; can't contain '[' or ']'
\]
)
()()()()() // pad rest of backreferences
/g, writeAnchorTag);
*/
text = text.replace(/(\[([^\[\]]+)\])()()()()()/g, writeAnchorTag);
return text;
}
function writeAnchorTag(wholeMatch, m1, m2, m3, m4, m5, m6, m7) {
if (m7 == undefined) m7 = "";
var whole_match = m1;
var link_text = m2.replace(/:\/\//g, "~P"); // to prevent auto-linking withing the link. will be converted back after the auto-linker runs
var link_id = m3.toLowerCase();
var url = m4;
var title = m7;
if (url == "") {
if (link_id == "") {
// lower-case and turn embedded newlines into spaces
link_id = link_text.toLowerCase().replace(/ ?\n/g, " ");
}
url = "#" + link_id;
if (g_urls.get(link_id) != undefined) {
url = g_urls.get(link_id);
if (g_titles.get(link_id) != undefined) {
title = g_titles.get(link_id);
}
}
else {
if (whole_match.search(/\(\s*\)$/m) > -1) {
// Special case for explicit empty url
url = "";
} else {
return whole_match;
}
}
}
url = encodeProblemUrlChars(url);
url = escapeCharacters(url, "*_");
var result = "<a href=\"" + url + "\"";
if (title != "") {
title = attributeEncode(title);
title = escapeCharacters(title, "*_");
result += " title=\"" + title + "\"";
}
result += ">" + link_text + "</a>";
return result;
}
function _DoImages(text) {
//
// Turn Markdown image shortcuts into <img> tags.
//
//
// First, handle reference-style labeled images: ![alt text][id]
//
/*
text = text.replace(/
( // wrap whole match in $1
!\[
(.*?) // alt text = $2
\]
[ ]? // one optional space
(?:\n[ ]*)? // one optional newline followed by spaces
\[
(.*?) // id = $3
\]
)
()()()() // pad rest of backreferences
/g, writeImageTag);
*/
text = text.replace(/(!\[(.*?)\][ ]?(?:\n[ ]*)?\[(.*?)\])()()()()/g, writeImageTag);
//
// Next, handle inline images: ![alt text](url "optional title")
// Don't forget: encode * and _
/*
text = text.replace(/
( // wrap whole match in $1
!\[
(.*?) // alt text = $2
\]
\s? // One optional whitespace character
\( // literal paren
[ \t]*
() // no id, so leave $3 empty
<?(\S+?)>? // src url = $4
[ \t]*
( // $5
(['"]) // quote char = $6
(.*?) // title = $7
\6 // matching quote
[ \t]*
)? // title is optional
\)
)
/g, writeImageTag);
*/
text = text.replace(/(!\[(.*?)\]\s?\([ \t]*()<?(\S+?)>?[ \t]*((['"])(.*?)\6[ \t]*)?\))/g, writeImageTag);
return text;
}
function attributeEncode(text) {
// unconditionally replace angle brackets here -- what ends up in an attribute (e.g. alt or title)
// never makes sense to have verbatim HTML in it (and the sanitizer would totally break it)
return text.replace(/>/g, "&gt;").replace(/</g, "&lt;").replace(/"/g, "&quot;");
}
function writeImageTag(wholeMatch, m1, m2, m3, m4, m5, m6, m7) {
var whole_match = m1;
var alt_text = m2;
var link_id = m3.toLowerCase();
var url = m4;
var title = m7;
if (!title) title = "";
if (url == "") {
if (link_id == "") {
// lower-case and turn embedded newlines into spaces
link_id = alt_text.toLowerCase().replace(/ ?\n/g, " ");
}
url = "#" + link_id;
if (g_urls.get(link_id) != undefined) {
url = g_urls.get(link_id);
if (g_titles.get(link_id) != undefined) {
title = g_titles.get(link_id);
}
}
else {
return whole_match;
}
}
alt_text = escapeCharacters(attributeEncode(alt_text), "*_[]()");
url = escapeCharacters(url, "*_");
var result = "<img src=\"" + url + "\" alt=\"" + alt_text + "\"";
// attacklab: Markdown.pl adds empty title attributes to images.
// Replicate this bug.
//if (title != "") {
title = attributeEncode(title);
title = escapeCharacters(title, "*_");
result += " title=\"" + title + "\"";
//}
result += " />";
return result;
}
function _DoHeaders(text) {
// Setext-style headers:
// Header 1
// ========
//
// Header 2
// --------
//
text = text.replace(/^(.+)[ \t]*\n=+[ \t]*\n+/gm,
function (wholeMatch, m1) { return "<h1>" + _RunSpanGamut(m1) + "</h1>\n\n"; }
);
text = text.replace(/^(.+)[ \t]*\n-+[ \t]*\n+/gm,
function (matchFound, m1) { return "<h2>" + _RunSpanGamut(m1) + "</h2>\n\n"; }
);
// atx-style headers:
// # Header 1
// ## Header 2
// ## Header 2 with closing hashes ##
// ...
// ###### Header 6
//
/*
text = text.replace(/
^(\#{1,6}) // $1 = string of #'s
[ \t]*
(.+?) // $2 = Header text
[ \t]*
\#* // optional closing #'s (not counted)
\n+
/gm, function() {...});
*/
text = text.replace(/^(\#{1,6})[ \t]*(.+?)[ \t]*\#*\n+/gm,
function (wholeMatch, m1, m2) {
var h_level = m1.length;
return "<h" + h_level + ">" + _RunSpanGamut(m2) + "</h" + h_level + ">\n\n";
}
);
return text;
}
function _DoLists(text) {
//
// Form HTML ordered (numbered) and unordered (bulleted) lists.
//
// attacklab: add sentinel to hack around khtml/safari bug:
// http://bugs.webkit.org/show_bug.cgi?id=11231
text += "~0";
// Re-usable pattern to match any entirel ul or ol list:
/*
var whole_list = /
( // $1 = whole list
( // $2
[ ]{0,3} // attacklab: g_tab_width - 1
([*+-]|\d+[.]) // $3 = first list item marker
[ \t]+
)
[^\r]+?
( // $4
~0 // sentinel for workaround; should be $
|
\n{2,}
(?=\S)
(?! // Negative lookahead for another list item marker
[ \t]*
(?:[*+-]|\d+[.])[ \t]+
)
)
)
/g
*/
var whole_list = /^(([ ]{0,3}([*+-]|\d+[.])[ \t]+)[^\r]+?(~0|\n{2,}(?=\S)(?![ \t]*(?:[*+-]|\d+[.])[ \t]+)))/gm;
if (g_list_level) {
text = text.replace(whole_list, function (wholeMatch, m1, m2) {
var list = m1;
var list_type = (m2.search(/[*+-]/g) > -1) ? "ul" : "ol";
var result = _ProcessListItems(list, list_type);
// Trim any trailing whitespace, to put the closing `</$list_type>`
// up on the preceding line, to get it past the current stupid
// HTML block parser. This is a hack to work around the terrible
// hack that is the HTML block parser.
result = result.replace(/\s+$/, "");
result = "<" + list_type + ">" + result + "</" + list_type + ">\n";
return result;
});
} else {
whole_list = /(\n\n|^\n?)(([ ]{0,3}([*+-]|\d+[.])[ \t]+)[^\r]+?(~0|\n{2,}(?=\S)(?![ \t]*(?:[*+-]|\d+[.])[ \t]+)))/g;
text = text.replace(whole_list, function (wholeMatch, m1, m2, m3) {
var runup = m1;
var list = m2;
var list_type = (m3.search(/[*+-]/g) > -1) ? "ul" : "ol";
var result = _ProcessListItems(list, list_type);
result = runup + "<" + list_type + ">\n" + result + "</" + list_type + ">\n";
return result;
});
}
// attacklab: strip sentinel
text = text.replace(/~0/, "");
return text;
}
var _listItemMarkers = { ol: "\\d+[.]", ul: "[*+-]" };
function _ProcessListItems(list_str, list_type) {
//
// Process the contents of a single ordered or unordered list, splitting it
// into individual list items.
//
// list_type is either "ul" or "ol".
// The $g_list_level global keeps track of when we're inside a list.
// Each time we enter a list, we increment it; when we leave a list,
// we decrement. If it's zero, we're not in a list anymore.
//
// We do this because when we're not inside a list, we want to treat
// something like this:
//
// I recommend upgrading to version
// 8. Oops, now this line is treated
// as a sub-list.
//
// As a single paragraph, despite the fact that the second line starts
// with a digit-period-space sequence.
//
// Whereas when we're inside a list (or sub-list), that line will be
// treated as the start of a sub-list. What a kludge, huh? This is
// an aspect of Markdown's syntax that's hard to parse perfectly
// without resorting to mind-reading. Perhaps the solution is to
// change the syntax rules such that sub-lists must start with a
// starting cardinal number; e.g. "1." or "a.".
g_list_level++;
// trim trailing blank lines:
list_str = list_str.replace(/\n{2,}$/, "\n");
// attacklab: add sentinel to emulate \z
list_str += "~0";
// In the original attacklab showdown, list_type was not given to this function, and anything
// that matched /[*+-]|\d+[.]/ would just create the next <li>, causing this mismatch:
//
// Markdown rendered by WMD rendered by MarkdownSharp
// ------------------------------------------------------------------
// 1. first 1. first 1. first
// 2. second 2. second 2. second
// - third 3. third * third
//
// We changed this to behave identical to MarkdownSharp. This is the constructed RegEx,
// with {MARKER} being one of \d+[.] or [*+-], depending on list_type:
/*
list_str = list_str.replace(/
(^[ \t]*) // leading whitespace = $1
({MARKER}) [ \t]+ // list marker = $2
([^\r]+? // list item text = $3
(\n+)
)
(?=
(~0 | \2 ({MARKER}) [ \t]+)
)
/gm, function(){...});
*/
var marker = _listItemMarkers[list_type];
var re = new RegExp("(^[ \\t]*)(" + marker + ")[ \\t]+([^\\r]+?(\\n+))(?=(~0|\\1(" + marker + ")[ \\t]+))", "gm");
var last_item_had_a_double_newline = false;
list_str = list_str.replace(re,
function (wholeMatch, m1, m2, m3) {
var item = m3;
var leading_space = m1;
var ends_with_double_newline = /\n\n$/.test(item);
var contains_double_newline = ends_with_double_newline || item.search(/\n{2,}/) > -1;
if (contains_double_newline || last_item_had_a_double_newline) {
item = _RunBlockGamut(_Outdent(item), /* doNotUnhash = */true);
}
else {
// Recursion for sub-lists:
item = _DoLists(_Outdent(item));
item = item.replace(/\n$/, ""); // chomp(item)
item = _RunSpanGamut(item);
}
last_item_had_a_double_newline = ends_with_double_newline;
return "<li>" + item + "</li>\n";
}
);
// attacklab: strip sentinel
list_str = list_str.replace(/~0/g, "");
g_list_level--;
return list_str;
}
function _DoCodeBlocks(text) {
//
// Process Markdown `<pre><code>` blocks.
//
/*
text = text.replace(/
(?:\n\n|^)
( // $1 = the code block -- one or more lines, starting with a space/tab
(?:
(?:[ ]{4}|\t) // Lines must start with a tab or a tab-width of spaces - attacklab: g_tab_width
.*\n+
)+
)
(\n*[ ]{0,3}[^ \t\n]|(?=~0)) // attacklab: g_tab_width
/g ,function(){...});
*/
// attacklab: sentinel workarounds for lack of \A and \Z, safari\khtml bug
text += "~0";
text = text.replace(/(?:\n\n|^)((?:(?:[ ]{4}|\t).*\n+)+)(\n*[ ]{0,3}[^ \t\n]|(?=~0))/g,
function (wholeMatch, m1, m2) {
var codeblock = m1;
var nextChar = m2;
codeblock = _EncodeCode(_Outdent(codeblock));
codeblock = _Detab(codeblock);
codeblock = codeblock.replace(/^\n+/g, ""); // trim leading newlines
codeblock = codeblock.replace(/\n+$/g, ""); // trim trailing whitespace
codeblock = "<pre><code>" + codeblock + "\n</code></pre>";
return "\n\n" + codeblock + "\n\n" + nextChar;
}
);
// attacklab: strip sentinel
text = text.replace(/~0/, "");
return text;
}
function hashBlock(text) {
text = text.replace(/(^\n+|\n+$)/g, "");
return "\n\n~K" + (g_html_blocks.push(text) - 1) + "K\n\n";
}
function _DoCodeSpans(text) {
//
// * Backtick quotes are used for <code></code> spans.
//
// * You can use multiple backticks as the delimiters if you want to
// include literal backticks in the code span. So, this input:
//
// Just type ``foo `bar` baz`` at the prompt.
//
// Will translate to:
//
// <p>Just type <code>foo `bar` baz</code> at the prompt.</p>
//
// There's no arbitrary limit to the number of backticks you
// can use as delimters. If you need three consecutive backticks
// in your code, use four for delimiters, etc.
//
// * You can use spaces to get literal backticks at the edges:
//
// ... type `` `bar` `` ...
//
// Turns to:
//
// ... type <code>`bar`</code> ...
//
/*
text = text.replace(/
(^|[^\\]) // Character before opening ` can't be a backslash
(`+) // $2 = Opening run of `
( // $3 = The code block
[^\r]*?
[^`] // attacklab: work around lack of lookbehind
)
\2 // Matching closer
(?!`)
/gm, function(){...});
*/
text = text.replace(/(^|[^\\])(`+)([^\r]*?[^`])\2(?!`)/gm,
function (wholeMatch, m1, m2, m3, m4) {
var c = m3;
c = c.replace(/^([ \t]*)/g, ""); // leading whitespace
c = c.replace(/[ \t]*$/g, ""); // trailing whitespace
c = _EncodeCode(c);
c = c.replace(/:\/\//g, "~P"); // to prevent auto-linking. Not necessary in code *blocks*, but in code spans. Will be converted back after the auto-linker runs.
return m1 + "<code>" + c + "</code>";
}
);
return text;
}
function _EncodeCode(text) {
//
// Encode/escape certain characters inside Markdown code runs.
// The point is that in code, these characters are literals,
// and lose their special Markdown meanings.
//
// Encode all ampersands; HTML entities are not
// entities within a Markdown code span.
text = text.replace(/&/g, "&amp;");
// Do the angle bracket song and dance:
text = text.replace(/</g, "&lt;");
text = text.replace(/>/g, "&gt;");
// Now, escape characters that are magic in Markdown:
text = escapeCharacters(text, "\*_{}[]\\", false);
// jj the line above breaks this:
//---
//* Item
// 1. Subitem
// special char: *
//---
return text;
}
function _DoItalicsAndBold(text) {
// <strong> must go first:
text = text.replace(/([\W_]|^)(\*\*|__)(?=\S)([^\r]*?\S[\*_]*)\2([\W_]|$)/g,
"$1<strong>$3</strong>$4");
text = text.replace(/([\W_]|^)(\*|_)(?=\S)([^\r\*_]*?\S)\2([\W_]|$)/g,
"$1<em>$3</em>$4");
return text;
}
function _DoBlockQuotes(text) {
/*
text = text.replace(/
( // Wrap whole match in $1
(
^[ \t]*>[ \t]? // '>' at the start of a line
.+\n // rest of the first line
(.+\n)* // subsequent consecutive lines
\n* // blanks
)+
)
/gm, function(){...});
*/
text = text.replace(/((^[ \t]*>[ \t]?.+\n(.+\n)*\n*)+)/gm,
function (wholeMatch, m1) {
var bq = m1;
// attacklab: hack around Konqueror 3.5.4 bug:
// "----------bug".replace(/^-/g,"") == "bug"
bq = bq.replace(/^[ \t]*>[ \t]?/gm, "~0"); // trim one level of quoting
// attacklab: clean up hack
bq = bq.replace(/~0/g, "");
bq = bq.replace(/^[ \t]+$/gm, ""); // trim whitespace-only lines
bq = _RunBlockGamut(bq); // recurse
bq = bq.replace(/(^|\n)/g, "$1 ");
// These leading spaces screw with <pre> content, so we need to fix that:
bq = bq.replace(
/(\s*<pre>[^\r]+?<\/pre>)/gm,
function (wholeMatch, m1) {
var pre = m1;
// attacklab: hack around Konqueror 3.5.4 bug:
pre = pre.replace(/^ /mg, "~0");
pre = pre.replace(/~0/g, "");
return pre;
});
return hashBlock("<blockquote>\n" + bq + "\n</blockquote>");
}
);
return text;
}
function _FormParagraphs(text, doNotUnhash) {
//
// Params:
// $text - string to process with html <p> tags
//
// Strip leading and trailing lines:
text = text.replace(/^\n+/g, "");
text = text.replace(/\n+$/g, "");
var grafs = text.split(/\n{2,}/g);
var grafsOut = [];
var markerRe = /~K(\d+)K/;
//
// Wrap <p> tags.
//
var end = grafs.length;
for (var i = 0; i < end; i++) {
var str = grafs[i];
// if this is an HTML marker, copy it
if (markerRe.test(str)) {
grafsOut.push(str);
}
else if (/\S/.test(str)) {
str = _RunSpanGamut(str);
str = str.replace(/^([ \t]*)/g, "<p>");
str += "</p>"
grafsOut.push(str);
}
}
//
// Unhashify HTML blocks
//
if (!doNotUnhash) {
end = grafsOut.length;
for (var i = 0; i < end; i++) {
var foundAny = true;
while (foundAny) { // we may need several runs, since the data may be nested
foundAny = false;
grafsOut[i] = grafsOut[i].replace(/~K(\d+)K/g, function (wholeMatch, id) {
foundAny = true;
return g_html_blocks[id];
});
}
}
}
return grafsOut.join("\n\n");
}
function _EncodeAmpsAndAngles(text) {
// Smart processing for ampersands and angle brackets that need to be encoded.
// Ampersand-encoding based entirely on Nat Irons's Amputator MT plugin:
// http://bumppo.net/projects/amputator/
text = text.replace(/&(?!#?[xX]?(?:[0-9a-fA-F]+|\w+);)/g, "&amp;");
// Encode naked <'s
text = text.replace(/<(?![a-z\/?\$!])/gi, "&lt;");
return text;
}
function _EncodeBackslashEscapes(text) {
//
// Parameter: String.
// Returns: The string, with after processing the following backslash
// escape sequences.
//
// attacklab: The polite way to do this is with the new
// escapeCharacters() function:
//
// text = escapeCharacters(text,"\\",true);
// text = escapeCharacters(text,"`*_{}[]()>#+-.!",true);
//
// ...but we're sidestepping its use of the (slow) RegExp constructor
// as an optimization for Firefox. This function gets called a LOT.
text = text.replace(/\\(\\)/g, escapeCharacters_callback);
text = text.replace(/\\([`*_{}\[\]()>#+-.!])/g, escapeCharacters_callback);
return text;
}
function _DoAutoLinks(text) {
// note that at this point, all other URL in the text are already hyperlinked as <a href=""></a>
// *except* for the <http://www.foo.com> case
// automatically add < and > around unadorned raw hyperlinks
// must be preceded by space/BOF and followed by non-word/EOF character
text = text.replace(/(^|\s)(https?|ftp)(:\/\/[-A-Z0-9+&@#\/%?=~_|\[\]\(\)!:,\.;]*[-A-Z0-9+&@#\/%=~_|\[\]])($|\W)/gi, "$1<$2$3>$4");
// autolink anything like <http://example.com>
var replacer = function (wholematch, m1) { return "<a href=\"" + m1 + "\">" + pluginHooks.plainLinkText(m1) + "</a>"; }
text = text.replace(/<((https?|ftp):[^'">\s]+)>/gi, replacer);
// Email addresses: <address@domain.foo>
/*
text = text.replace(/
<
(?:mailto:)?
(
[-.\w]+
\@
[-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+
)
>
/gi, _DoAutoLinks_callback());
*/
/* disabling email autolinking, since we don't do that on the server, either
text = text.replace(/<(?:mailto:)?([-.\w]+\@[-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+)>/gi,
function(wholeMatch,m1) {
return _EncodeEmailAddress( _UnescapeSpecialChars(m1) );
}
);
*/
return text;
}
function _UnescapeSpecialChars(text) {
//
// Swap back in all the special characters we've hidden.
//
text = text.replace(/~E(\d+)E/g,
function (wholeMatch, m1) {
var charCodeToReplace = parseInt(m1);
return String.fromCharCode(charCodeToReplace);
}
);
return text;
}
function _Outdent(text) {
//
// Remove one level of line-leading tabs or spaces
//
// attacklab: hack around Konqueror 3.5.4 bug:
// "----------bug".replace(/^-/g,"") == "bug"
text = text.replace(/^(\t|[ ]{1,4})/gm, "~0"); // attacklab: g_tab_width
// attacklab: clean up hack
text = text.replace(/~0/g, "")
return text;
}
function _Detab(text) {
if (!/\t/.test(text))
return text;
var spaces = [" ", " ", " ", " "],
skew = 0,
v;
return text.replace(/[\n\t]/g, function (match, offset) {
if (match === "\n") {
skew = offset + 1;
return match;
}
v = (offset - skew) % 4;
skew = offset + 1;
return spaces[v];
});
}
//
// attacklab: Utility functions
//
var _problemUrlChars = /(?:["'*()[\]:]|~D)/g;
// hex-encodes some unusual "problem" chars in URLs to avoid URL detection problems
function encodeProblemUrlChars(url) {
if (!url)
return "";
var len = url.length;
return url.replace(_problemUrlChars, function (match, offset) {
if (match == "~D") // escape for dollar
return "%24";
if (match == ":") {
if (offset == len - 1 || /[0-9\/]/.test(url.charAt(offset + 1)))
return ":"
}
return "%" + match.charCodeAt(0).toString(16);
});
}
function escapeCharacters(text, charsToEscape, afterBackslash) {
// First we have to escape the escape characters so that
// we can build a character class out of them
var regexString = "([" + charsToEscape.replace(/([\[\]\\])/g, "\\$1") + "])";
if (afterBackslash) {
regexString = "\\\\" + regexString;
}
var regex = new RegExp(regexString, "g");
text = text.replace(regex, escapeCharacters_callback);
return text;
}
function escapeCharacters_callback(wholeMatch, m1) {
var charCodeToEscape = m1.charCodeAt(0);
return "~E" + charCodeToEscape + "E";
}
}; // end of the Markdown.Converter constructor
})();

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lms/static/js/vendor/Markdown.Editor.js vendored Normal file
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@@ -0,0 +1,2160 @@
// needs Markdown.Converter.js at the moment
(function () {
var util = {},
position = {},
ui = {},
doc = window.document,
re = window.RegExp,
nav = window.navigator,
SETTINGS = { lineLength: 72 },
// Used to work around some browser bugs where we can't use feature testing.
uaSniffed = {
isIE: /msie/.test(nav.userAgent.toLowerCase()),
isIE_5or6: /msie 6/.test(nav.userAgent.toLowerCase()) || /msie 5/.test(nav.userAgent.toLowerCase()),
isOpera: /opera/.test(nav.userAgent.toLowerCase())
};
// -------------------------------------------------------------------
// YOUR CHANGES GO HERE
//
// I've tried to localize the things you are likely to change to
// this area.
// -------------------------------------------------------------------
// The text that appears on the upper part of the dialog box when
// entering links.
var linkDialogText = "<p><b>Insert Hyperlink</b></p><p>http://example.com/ \"optional title\"</p>";
var imageDialogText = "<p><b>Insert Image</b></p><p>http://example.com/images/diagram.jpg \"optional title\"<br><br>Need <a href='http://www.google.com/search?q=free+image+hosting' target='_blank'>free image hosting?</a></p>";
// The default text that appears in the dialog input box when entering
// links.
var imageDefaultText = "http://";
var linkDefaultText = "http://";
var defaultHelpHoverTitle = "Markdown Editing Help";
// -------------------------------------------------------------------
// END OF YOUR CHANGES
// -------------------------------------------------------------------
// help, if given, should have a property "handler", the click handler for the help button,
// and can have an optional property "title" for the button's tooltip (defaults to "Markdown Editing Help").
// If help isn't given, not help button is created.
//
// The constructed editor object has the methods:
// - getConverter() returns the markdown converter object that was passed to the constructor
// - run() actually starts the editor; should be called after all necessary plugins are registered. Calling this more than once is a no-op.
// - refreshPreview() forces the preview to be updated. This method is only available after run() was called.
Markdown.Editor = function (markdownConverter, idPostfix, help) {
idPostfix = idPostfix || "";
var hooks = this.hooks = new Markdown.HookCollection();
hooks.addNoop("onPreviewRefresh"); // called with no arguments after the preview has been refreshed
hooks.addNoop("postBlockquoteCreation"); // called with the user's selection *after* the blockquote was created; should return the actual to-be-inserted text
hooks.addFalse("insertImageDialog"); /* called with one parameter: a callback to be called with the URL of the image. If the application creates
* its own image insertion dialog, this hook should return true, and the callback should be called with the chosen
* image url (or null if the user cancelled). If this hook returns false, the default dialog will be used.
*/
this.getConverter = function () { return markdownConverter; }
var that = this,
panels;
this.run = function () {
if (panels)
return; // already initialized
panels = new PanelCollection(idPostfix);
var commandManager = new CommandManager(hooks);
var previewManager = new PreviewManager(markdownConverter, panels, function () { hooks.onPreviewRefresh(); });
var undoManager, uiManager;
if (!/\?noundo/.test(doc.location.href)) {
undoManager = new UndoManager(function () {
previewManager.refresh();
if (uiManager) // not available on the first call
uiManager.setUndoRedoButtonStates();
}, panels);
this.textOperation = function (f) {
undoManager.setCommandMode();
f();
that.refreshPreview();
}
}
uiManager = new UIManager(idPostfix, panels, undoManager, previewManager, commandManager, help);
uiManager.setUndoRedoButtonStates();
var forceRefresh = that.refreshPreview = function () { previewManager.refresh(true); };
forceRefresh();
};
}
// before: contains all the text in the input box BEFORE the selection.
// after: contains all the text in the input box AFTER the selection.
function Chunks() { }
// startRegex: a regular expression to find the start tag
// endRegex: a regular expresssion to find the end tag
Chunks.prototype.findTags = function (startRegex, endRegex) {
var chunkObj = this;
var regex;
if (startRegex) {
regex = util.extendRegExp(startRegex, "", "$");
this.before = this.before.replace(regex,
function (match) {
chunkObj.startTag = chunkObj.startTag + match;
return "";
});
regex = util.extendRegExp(startRegex, "^", "");
this.selection = this.selection.replace(regex,
function (match) {
chunkObj.startTag = chunkObj.startTag + match;
return "";
});
}
if (endRegex) {
regex = util.extendRegExp(endRegex, "", "$");
this.selection = this.selection.replace(regex,
function (match) {
chunkObj.endTag = match + chunkObj.endTag;
return "";
});
regex = util.extendRegExp(endRegex, "^", "");
this.after = this.after.replace(regex,
function (match) {
chunkObj.endTag = match + chunkObj.endTag;
return "";
});
}
};
// If remove is false, the whitespace is transferred
// to the before/after regions.
//
// If remove is true, the whitespace disappears.
Chunks.prototype.trimWhitespace = function (remove) {
var beforeReplacer, afterReplacer, that = this;
if (remove) {
beforeReplacer = afterReplacer = "";
} else {
beforeReplacer = function (s) { that.before += s; return ""; }
afterReplacer = function (s) { that.after = s + that.after; return ""; }
}
this.selection = this.selection.replace(/^(\s*)/, beforeReplacer).replace(/(\s*)$/, afterReplacer);
};
Chunks.prototype.skipLines = function (nLinesBefore, nLinesAfter, findExtraNewlines) {
if (nLinesBefore === undefined) {
nLinesBefore = 1;
}
if (nLinesAfter === undefined) {
nLinesAfter = 1;
}
nLinesBefore++;
nLinesAfter++;
var regexText;
var replacementText;
// chrome bug ... documented at: http://meta.stackoverflow.com/questions/63307/blockquote-glitch-in-editor-in-chrome-6-and-7/65985#65985
if (navigator.userAgent.match(/Chrome/)) {
"X".match(/()./);
}
this.selection = this.selection.replace(/(^\n*)/, "");
this.startTag = this.startTag + re.$1;
this.selection = this.selection.replace(/(\n*$)/, "");
this.endTag = this.endTag + re.$1;
this.startTag = this.startTag.replace(/(^\n*)/, "");
this.before = this.before + re.$1;
this.endTag = this.endTag.replace(/(\n*$)/, "");
this.after = this.after + re.$1;
if (this.before) {
regexText = replacementText = "";
while (nLinesBefore--) {
regexText += "\\n?";
replacementText += "\n";
}
if (findExtraNewlines) {
regexText = "\\n*";
}
this.before = this.before.replace(new re(regexText + "$", ""), replacementText);
}
if (this.after) {
regexText = replacementText = "";
while (nLinesAfter--) {
regexText += "\\n?";
replacementText += "\n";
}
if (findExtraNewlines) {
regexText = "\\n*";
}
this.after = this.after.replace(new re(regexText, ""), replacementText);
}
};
// end of Chunks
// A collection of the important regions on the page.
// Cached so we don't have to keep traversing the DOM.
// Also holds ieCachedRange and ieCachedScrollTop, where necessary; working around
// this issue:
// Internet explorer has problems with CSS sprite buttons that use HTML
// lists. When you click on the background image "button", IE will
// select the non-existent link text and discard the selection in the
// textarea. The solution to this is to cache the textarea selection
// on the button's mousedown event and set a flag. In the part of the
// code where we need to grab the selection, we check for the flag
// and, if it's set, use the cached area instead of querying the
// textarea.
//
// This ONLY affects Internet Explorer (tested on versions 6, 7
// and 8) and ONLY on button clicks. Keyboard shortcuts work
// normally since the focus never leaves the textarea.
function PanelCollection(postfix) {
this.buttonBar = doc.getElementById("wmd-button-bar" + postfix);
this.preview = doc.getElementById("wmd-preview" + postfix);
this.input = doc.getElementById("wmd-input" + postfix);
};
// Returns true if the DOM element is visible, false if it's hidden.
// Checks if display is anything other than none.
util.isVisible = function (elem) {
if (window.getComputedStyle) {
// Most browsers
return window.getComputedStyle(elem, null).getPropertyValue("display") !== "none";
}
else if (elem.currentStyle) {
// IE
return elem.currentStyle["display"] !== "none";
}
};
// Adds a listener callback to a DOM element which is fired on a specified
// event.
util.addEvent = function (elem, event, listener) {
if (elem.attachEvent) {
// IE only. The "on" is mandatory.
elem.attachEvent("on" + event, listener);
}
else {
// Other browsers.
elem.addEventListener(event, listener, false);
}
};
// Removes a listener callback from a DOM element which is fired on a specified
// event.
util.removeEvent = function (elem, event, listener) {
if (elem.detachEvent) {
// IE only. The "on" is mandatory.
elem.detachEvent("on" + event, listener);
}
else {
// Other browsers.
elem.removeEventListener(event, listener, false);
}
};
// Converts \r\n and \r to \n.
util.fixEolChars = function (text) {
text = text.replace(/\r\n/g, "\n");
text = text.replace(/\r/g, "\n");
return text;
};
// Extends a regular expression. Returns a new RegExp
// using pre + regex + post as the expression.
// Used in a few functions where we have a base
// expression and we want to pre- or append some
// conditions to it (e.g. adding "$" to the end).
// The flags are unchanged.
//
// regex is a RegExp, pre and post are strings.
util.extendRegExp = function (regex, pre, post) {
if (pre === null || pre === undefined) {
pre = "";
}
if (post === null || post === undefined) {
post = "";
}
var pattern = regex.toString();
var flags;
// Replace the flags with empty space and store them.
pattern = pattern.replace(/\/([gim]*)$/, function (wholeMatch, flagsPart) {
flags = flagsPart;
return "";
});
// Remove the slash delimiters on the regular expression.
pattern = pattern.replace(/(^\/|\/$)/g, "");
pattern = pre + pattern + post;
return new re(pattern, flags);
}
// UNFINISHED
// The assignment in the while loop makes jslint cranky.
// I'll change it to a better loop later.
position.getTop = function (elem, isInner) {
var result = elem.offsetTop;
if (!isInner) {
while (elem = elem.offsetParent) {
result += elem.offsetTop;
}
}
return result;
};
position.getHeight = function (elem) {
return elem.offsetHeight || elem.scrollHeight;
};
position.getWidth = function (elem) {
return elem.offsetWidth || elem.scrollWidth;
};
position.getPageSize = function () {
var scrollWidth, scrollHeight;
var innerWidth, innerHeight;
// It's not very clear which blocks work with which browsers.
if (self.innerHeight && self.scrollMaxY) {
scrollWidth = doc.body.scrollWidth;
scrollHeight = self.innerHeight + self.scrollMaxY;
}
else if (doc.body.scrollHeight > doc.body.offsetHeight) {
scrollWidth = doc.body.scrollWidth;
scrollHeight = doc.body.scrollHeight;
}
else {
scrollWidth = doc.body.offsetWidth;
scrollHeight = doc.body.offsetHeight;
}
if (self.innerHeight) {
// Non-IE browser
innerWidth = self.innerWidth;
innerHeight = self.innerHeight;
}
else if (doc.documentElement && doc.documentElement.clientHeight) {
// Some versions of IE (IE 6 w/ a DOCTYPE declaration)
innerWidth = doc.documentElement.clientWidth;
innerHeight = doc.documentElement.clientHeight;
}
else if (doc.body) {
// Other versions of IE
innerWidth = doc.body.clientWidth;
innerHeight = doc.body.clientHeight;
}
var maxWidth = Math.max(scrollWidth, innerWidth);
var maxHeight = Math.max(scrollHeight, innerHeight);
return [maxWidth, maxHeight, innerWidth, innerHeight];
};
// Handles pushing and popping TextareaStates for undo/redo commands.
// I should rename the stack variables to list.
function UndoManager(callback, panels) {
var undoObj = this;
var undoStack = []; // A stack of undo states
var stackPtr = 0; // The index of the current state
var mode = "none";
var lastState; // The last state
var timer; // The setTimeout handle for cancelling the timer
var inputStateObj;
// Set the mode for later logic steps.
var setMode = function (newMode, noSave) {
if (mode != newMode) {
mode = newMode;
if (!noSave) {
saveState();
}
}
if (!uaSniffed.isIE || mode != "moving") {
timer = setTimeout(refreshState, 1);
}
else {
inputStateObj = null;
}
};
var refreshState = function (isInitialState) {
inputStateObj = new TextareaState(panels, isInitialState);
timer = undefined;
};
this.setCommandMode = function () {
mode = "command";
saveState();
timer = setTimeout(refreshState, 0);
};
this.canUndo = function () {
return stackPtr > 1;
};
this.canRedo = function () {
if (undoStack[stackPtr + 1]) {
return true;
}
return false;
};
// Removes the last state and restores it.
this.undo = function () {
if (undoObj.canUndo()) {
if (lastState) {
// What about setting state -1 to null or checking for undefined?
lastState.restore();
lastState = null;
}
else {
undoStack[stackPtr] = new TextareaState(panels);
undoStack[--stackPtr].restore();
if (callback) {
callback();
}
}
}
mode = "none";
panels.input.focus();
refreshState();
};
// Redo an action.
this.redo = function () {
if (undoObj.canRedo()) {
undoStack[++stackPtr].restore();
if (callback) {
callback();
}
}
mode = "none";
panels.input.focus();
refreshState();
};
// Push the input area state to the stack.
var saveState = function () {
var currState = inputStateObj || new TextareaState(panels);
if (!currState) {
return false;
}
if (mode == "moving") {
if (!lastState) {
lastState = currState;
}
return;
}
if (lastState) {
if (undoStack[stackPtr - 1].text != lastState.text) {
undoStack[stackPtr++] = lastState;
}
lastState = null;
}
undoStack[stackPtr++] = currState;
undoStack[stackPtr + 1] = null;
if (callback) {
callback();
}
};
var handleCtrlYZ = function (event) {
var handled = false;
if (event.ctrlKey || event.metaKey) {
// IE and Opera do not support charCode.
var keyCode = event.charCode || event.keyCode;
var keyCodeChar = String.fromCharCode(keyCode);
switch (keyCodeChar) {
case "y":
undoObj.redo();
handled = true;
break;
case "z":
if (!event.shiftKey) {
undoObj.undo();
}
else {
undoObj.redo();
}
handled = true;
break;
}
}
if (handled) {
if (event.preventDefault) {
event.preventDefault();
}
if (window.event) {
window.event.returnValue = false;
}
return;
}
};
// Set the mode depending on what is going on in the input area.
var handleModeChange = function (event) {
if (!event.ctrlKey && !event.metaKey) {
var keyCode = event.keyCode;
if ((keyCode >= 33 && keyCode <= 40) || (keyCode >= 63232 && keyCode <= 63235)) {
// 33 - 40: page up/dn and arrow keys
// 63232 - 63235: page up/dn and arrow keys on safari
setMode("moving");
}
else if (keyCode == 8 || keyCode == 46 || keyCode == 127) {
// 8: backspace
// 46: delete
// 127: delete
setMode("deleting");
}
else if (keyCode == 13) {
// 13: Enter
setMode("newlines");
}
else if (keyCode == 27) {
// 27: escape
setMode("escape");
}
else if ((keyCode < 16 || keyCode > 20) && keyCode != 91) {
// 16-20 are shift, etc.
// 91: left window key
// I think this might be a little messed up since there are
// a lot of nonprinting keys above 20.
setMode("typing");
}
}
};
var setEventHandlers = function () {
util.addEvent(panels.input, "keypress", function (event) {
// keyCode 89: y
// keyCode 90: z
if ((event.ctrlKey || event.metaKey) && (event.keyCode == 89 || event.keyCode == 90)) {
event.preventDefault();
}
});
var handlePaste = function () {
if (uaSniffed.isIE || (inputStateObj && inputStateObj.text != panels.input.value)) {
if (timer == undefined) {
mode = "paste";
saveState();
refreshState();
}
}
};
util.addEvent(panels.input, "keydown", handleCtrlYZ);
util.addEvent(panels.input, "keydown", handleModeChange);
util.addEvent(panels.input, "mousedown", function () {
setMode("moving");
});
panels.input.onpaste = handlePaste;
panels.input.ondrop = handlePaste;
};
var init = function () {
setEventHandlers();
refreshState(true);
saveState();
};
init();
}
// end of UndoManager
// The input textarea state/contents.
// This is used to implement undo/redo by the undo manager.
function TextareaState(panels, isInitialState) {
// Aliases
var stateObj = this;
var inputArea = panels.input;
this.init = function () {
if (!util.isVisible(inputArea)) {
return;
}
if (!isInitialState && doc.activeElement && doc.activeElement !== inputArea) { // this happens when tabbing out of the input box
return;
}
this.setInputAreaSelectionStartEnd();
this.scrollTop = inputArea.scrollTop;
if (!this.text && inputArea.selectionStart || inputArea.selectionStart === 0) {
this.text = inputArea.value;
}
}
// Sets the selected text in the input box after we've performed an
// operation.
this.setInputAreaSelection = function () {
if (!util.isVisible(inputArea)) {
return;
}
if (inputArea.selectionStart !== undefined && !uaSniffed.isOpera) {
inputArea.focus();
inputArea.selectionStart = stateObj.start;
inputArea.selectionEnd = stateObj.end;
inputArea.scrollTop = stateObj.scrollTop;
}
else if (doc.selection) {
if (doc.activeElement && doc.activeElement !== inputArea) {
return;
}
inputArea.focus();
var range = inputArea.createTextRange();
range.moveStart("character", -inputArea.value.length);
range.moveEnd("character", -inputArea.value.length);
range.moveEnd("character", stateObj.end);
range.moveStart("character", stateObj.start);
range.select();
}
};
this.setInputAreaSelectionStartEnd = function () {
if (!panels.ieCachedRange && (inputArea.selectionStart || inputArea.selectionStart === 0)) {
stateObj.start = inputArea.selectionStart;
stateObj.end = inputArea.selectionEnd;
}
else if (doc.selection) {
stateObj.text = util.fixEolChars(inputArea.value);
// IE loses the selection in the textarea when buttons are
// clicked. On IE we cache the selection. Here, if something is cached,
// we take it.
var range = panels.ieCachedRange || doc.selection.createRange();
var fixedRange = util.fixEolChars(range.text);
var marker = "\x07";
var markedRange = marker + fixedRange + marker;
range.text = markedRange;
var inputText = util.fixEolChars(inputArea.value);
range.moveStart("character", -markedRange.length);
range.text = fixedRange;
stateObj.start = inputText.indexOf(marker);
stateObj.end = inputText.lastIndexOf(marker) - marker.length;
var len = stateObj.text.length - util.fixEolChars(inputArea.value).length;
if (len) {
range.moveStart("character", -fixedRange.length);
while (len--) {
fixedRange += "\n";
stateObj.end += 1;
}
range.text = fixedRange;
}
if (panels.ieCachedRange)
stateObj.scrollTop = panels.ieCachedScrollTop; // this is set alongside with ieCachedRange
panels.ieCachedRange = null;
this.setInputAreaSelection();
}
};
// Restore this state into the input area.
this.restore = function () {
if (stateObj.text != undefined && stateObj.text != inputArea.value) {
inputArea.value = stateObj.text;
}
this.setInputAreaSelection();
inputArea.scrollTop = stateObj.scrollTop;
};
// Gets a collection of HTML chunks from the inptut textarea.
this.getChunks = function () {
var chunk = new Chunks();
chunk.before = util.fixEolChars(stateObj.text.substring(0, stateObj.start));
chunk.startTag = "";
chunk.selection = util.fixEolChars(stateObj.text.substring(stateObj.start, stateObj.end));
chunk.endTag = "";
chunk.after = util.fixEolChars(stateObj.text.substring(stateObj.end));
chunk.scrollTop = stateObj.scrollTop;
return chunk;
};
// Sets the TextareaState properties given a chunk of markdown.
this.setChunks = function (chunk) {
chunk.before = chunk.before + chunk.startTag;
chunk.after = chunk.endTag + chunk.after;
this.start = chunk.before.length;
this.end = chunk.before.length + chunk.selection.length;
this.text = chunk.before + chunk.selection + chunk.after;
this.scrollTop = chunk.scrollTop;
};
this.init();
};
function PreviewManager(converter, panels, previewRefreshCallback) {
var managerObj = this;
var timeout;
var elapsedTime;
var oldInputText;
var maxDelay = 3000;
var startType = "delayed"; // The other legal value is "manual"
// Adds event listeners to elements
var setupEvents = function (inputElem, listener) {
util.addEvent(inputElem, "input", listener);
inputElem.onpaste = listener;
inputElem.ondrop = listener;
util.addEvent(inputElem, "keypress", listener);
util.addEvent(inputElem, "keydown", listener);
};
var getDocScrollTop = function () {
var result = 0;
if (window.innerHeight) {
result = window.pageYOffset;
}
else
if (doc.documentElement && doc.documentElement.scrollTop) {
result = doc.documentElement.scrollTop;
}
else
if (doc.body) {
result = doc.body.scrollTop;
}
return result;
};
var makePreviewHtml = function () {
// If there is no registered preview panel
// there is nothing to do.
if (!panels.preview)
return;
var text = panels.input.value;
if (text && text == oldInputText) {
return; // Input text hasn't changed.
}
else {
oldInputText = text;
}
var prevTime = new Date().getTime();
text = converter.makeHtml(text);
// Calculate the processing time of the HTML creation.
// It's used as the delay time in the event listener.
var currTime = new Date().getTime();
elapsedTime = currTime - prevTime;
pushPreviewHtml(text);
};
// setTimeout is already used. Used as an event listener.
var applyTimeout = function () {
if (timeout) {
clearTimeout(timeout);
timeout = undefined;
}
if (startType !== "manual") {
var delay = 0;
if (startType === "delayed") {
delay = elapsedTime;
}
if (delay > maxDelay) {
delay = maxDelay;
}
timeout = setTimeout(makePreviewHtml, delay);
}
};
var getScaleFactor = function (panel) {
if (panel.scrollHeight <= panel.clientHeight) {
return 1;
}
return panel.scrollTop / (panel.scrollHeight - panel.clientHeight);
};
var setPanelScrollTops = function () {
if (panels.preview) {
panels.preview.scrollTop = (panels.preview.scrollHeight - panels.preview.clientHeight) * getScaleFactor(panels.preview);
}
};
this.refresh = function (requiresRefresh) {
if (requiresRefresh) {
oldInputText = "";
makePreviewHtml();
}
else {
applyTimeout();
}
};
this.processingTime = function () {
return elapsedTime;
};
var isFirstTimeFilled = true;
// IE doesn't let you use innerHTML if the element is contained somewhere in a table
// (which is the case for inline editing) -- in that case, detach the element, set the
// value, and reattach. Yes, that *is* ridiculous.
var ieSafePreviewSet = function (text) {
var preview = panels.preview;
var parent = preview.parentNode;
var sibling = preview.nextSibling;
parent.removeChild(preview);
preview.innerHTML = text;
if (!sibling)
parent.appendChild(preview);
else
parent.insertBefore(preview, sibling);
}
var nonSuckyBrowserPreviewSet = function (text) {
panels.preview.innerHTML = text;
}
var previewSetter;
var previewSet = function (text) {
if (previewSetter)
return previewSetter(text);
try {
nonSuckyBrowserPreviewSet(text);
previewSetter = nonSuckyBrowserPreviewSet;
} catch (e) {
previewSetter = ieSafePreviewSet;
previewSetter(text);
}
};
var pushPreviewHtml = function (text) {
var emptyTop = position.getTop(panels.input) - getDocScrollTop();
if (panels.preview) {
previewSet(text);
previewRefreshCallback();
}
setPanelScrollTops();
if (isFirstTimeFilled) {
isFirstTimeFilled = false;
return;
}
var fullTop = position.getTop(panels.input) - getDocScrollTop();
if (uaSniffed.isIE) {
setTimeout(function () {
window.scrollBy(0, fullTop - emptyTop);
}, 0);
}
else {
window.scrollBy(0, fullTop - emptyTop);
}
};
var init = function () {
setupEvents(panels.input, applyTimeout);
makePreviewHtml();
if (panels.preview) {
panels.preview.scrollTop = 0;
}
};
init();
};
// Creates the background behind the hyperlink text entry box.
// And download dialog
// Most of this has been moved to CSS but the div creation and
// browser-specific hacks remain here.
ui.createBackground = function () {
var background = doc.createElement("div"),
style = background.style;
background.className = "wmd-prompt-background";
style.position = "absolute";
style.top = "0";
style.zIndex = "1000";
if (uaSniffed.isIE) {
style.filter = "alpha(opacity=50)";
}
else {
style.opacity = "0.5";
}
var pageSize = position.getPageSize();
style.height = pageSize[1] + "px";
if (uaSniffed.isIE) {
style.left = doc.documentElement.scrollLeft;
style.width = doc.documentElement.clientWidth;
}
else {
style.left = "0";
style.width = "100%";
}
doc.body.appendChild(background);
return background;
};
// This simulates a modal dialog box and asks for the URL when you
// click the hyperlink or image buttons.
//
// text: The html for the input box.
// defaultInputText: The default value that appears in the input box.
// callback: The function which is executed when the prompt is dismissed, either via OK or Cancel.
// It receives a single argument; either the entered text (if OK was chosen) or null (if Cancel
// was chosen).
ui.prompt = function (text, defaultInputText, callback) {
// These variables need to be declared at this level since they are used
// in multiple functions.
var dialog; // The dialog box.
var input; // The text box where you enter the hyperlink.
if (defaultInputText === undefined) {
defaultInputText = "";
}
// Used as a keydown event handler. Esc dismisses the prompt.
// Key code 27 is ESC.
var checkEscape = function (key) {
var code = (key.charCode || key.keyCode);
if (code === 27) {
close(true);
}
};
// Dismisses the hyperlink input box.
// isCancel is true if we don't care about the input text.
// isCancel is false if we are going to keep the text.
var close = function (isCancel) {
util.removeEvent(doc.body, "keydown", checkEscape);
var text = input.value;
if (isCancel) {
text = null;
}
else {
// Fixes common pasting errors.
text = text.replace(/^http:\/\/(https?|ftp):\/\//, '$1://');
if (!/^(?:https?|ftp):\/\//.test(text))
text = 'http://' + text;
}
dialog.parentNode.removeChild(dialog);
callback(text);
return false;
};
// Create the text input box form/window.
var createDialog = function () {
// The main dialog box.
dialog = doc.createElement("div");
dialog.className = "wmd-prompt-dialog";
dialog.style.padding = "10px;";
dialog.style.position = "fixed";
dialog.style.width = "400px";
dialog.style.zIndex = "1001";
// The dialog text.
var question = doc.createElement("div");
question.innerHTML = text;
question.style.padding = "5px";
dialog.appendChild(question);
// The web form container for the text box and buttons.
var form = doc.createElement("form"),
style = form.style;
form.onsubmit = function () { return close(false); };
style.padding = "0";
style.margin = "0";
style.cssFloat = "left";
style.width = "100%";
style.textAlign = "center";
style.position = "relative";
dialog.appendChild(form);
// The input text box
input = doc.createElement("input");
input.type = "text";
input.value = defaultInputText;
style = input.style;
style.display = "block";
style.width = "80%";
style.marginLeft = style.marginRight = "auto";
form.appendChild(input);
// The ok button
var okButton = doc.createElement("input");
okButton.type = "button";
okButton.onclick = function () { return close(false); };
okButton.value = "OK";
style = okButton.style;
style.margin = "10px";
style.display = "inline";
style.width = "7em";
// The cancel button
var cancelButton = doc.createElement("input");
cancelButton.type = "button";
cancelButton.onclick = function () { return close(true); };
cancelButton.value = "Cancel";
style = cancelButton.style;
style.margin = "10px";
style.display = "inline";
style.width = "7em";
form.appendChild(okButton);
form.appendChild(cancelButton);
util.addEvent(doc.body, "keydown", checkEscape);
dialog.style.top = "50%";
dialog.style.left = "50%";
dialog.style.display = "block";
if (uaSniffed.isIE_5or6) {
dialog.style.position = "absolute";
dialog.style.top = doc.documentElement.scrollTop + 200 + "px";
dialog.style.left = "50%";
}
doc.body.appendChild(dialog);
// This has to be done AFTER adding the dialog to the form if you
// want it to be centered.
dialog.style.marginTop = -(position.getHeight(dialog) / 2) + "px";
dialog.style.marginLeft = -(position.getWidth(dialog) / 2) + "px";
};
// Why is this in a zero-length timeout?
// Is it working around a browser bug?
setTimeout(function () {
createDialog();
var defTextLen = defaultInputText.length;
if (input.selectionStart !== undefined) {
input.selectionStart = 0;
input.selectionEnd = defTextLen;
}
else if (input.createTextRange) {
var range = input.createTextRange();
range.collapse(false);
range.moveStart("character", -defTextLen);
range.moveEnd("character", defTextLen);
range.select();
}
input.focus();
}, 0);
};
function UIManager(postfix, panels, undoManager, previewManager, commandManager, helpOptions) {
var inputBox = panels.input,
buttons = {}; // buttons.undo, buttons.link, etc. The actual DOM elements.
makeSpritedButtonRow();
var keyEvent = "keydown";
if (uaSniffed.isOpera) {
keyEvent = "keypress";
}
util.addEvent(inputBox, keyEvent, function (key) {
// Check to see if we have a button key and, if so execute the callback.
if ((key.ctrlKey || key.metaKey) && !key.altKey && !key.shiftKey) {
var keyCode = key.charCode || key.keyCode;
var keyCodeStr = String.fromCharCode(keyCode).toLowerCase();
switch (keyCodeStr) {
case "b":
doClick(buttons.bold);
break;
case "i":
doClick(buttons.italic);
break;
case "l":
doClick(buttons.link);
break;
case "q":
doClick(buttons.quote);
break;
case "k":
doClick(buttons.code);
break;
case "g":
doClick(buttons.image);
break;
case "o":
doClick(buttons.olist);
break;
case "u":
doClick(buttons.ulist);
break;
case "h":
doClick(buttons.heading);
break;
case "r":
doClick(buttons.hr);
break;
case "y":
doClick(buttons.redo);
break;
case "z":
if (key.shiftKey) {
doClick(buttons.redo);
}
else {
doClick(buttons.undo);
}
break;
default:
return;
}
if (key.preventDefault) {
key.preventDefault();
}
if (window.event) {
window.event.returnValue = false;
}
}
});
// Auto-indent on shift-enter
util.addEvent(inputBox, "keyup", function (key) {
if (key.shiftKey && !key.ctrlKey && !key.metaKey) {
var keyCode = key.charCode || key.keyCode;
// Character 13 is Enter
if (keyCode === 13) {
var fakeButton = {};
fakeButton.textOp = bindCommand("doAutoindent");
doClick(fakeButton);
}
}
});
// special handler because IE clears the context of the textbox on ESC
if (uaSniffed.isIE) {
util.addEvent(inputBox, "keydown", function (key) {
var code = key.keyCode;
if (code === 27) {
return false;
}
});
}
// Perform the button's action.
function doClick(button) {
inputBox.focus();
if (button.textOp) {
if (undoManager) {
undoManager.setCommandMode();
}
var state = new TextareaState(panels);
if (!state) {
return;
}
var chunks = state.getChunks();
// Some commands launch a "modal" prompt dialog. Javascript
// can't really make a modal dialog box and the WMD code
// will continue to execute while the dialog is displayed.
// This prevents the dialog pattern I'm used to and means
// I can't do something like this:
//
// var link = CreateLinkDialog();
// makeMarkdownLink(link);
//
// Instead of this straightforward method of handling a
// dialog I have to pass any code which would execute
// after the dialog is dismissed (e.g. link creation)
// in a function parameter.
//
// Yes this is awkward and I think it sucks, but there's
// no real workaround. Only the image and link code
// create dialogs and require the function pointers.
var fixupInputArea = function () {
inputBox.focus();
if (chunks) {
state.setChunks(chunks);
}
state.restore();
previewManager.refresh();
};
var noCleanup = button.textOp(chunks, fixupInputArea);
if (!noCleanup) {
fixupInputArea();
}
}
if (button.execute) {
button.execute(undoManager);
}
};
function setupButton(button, isEnabled) {
var normalYShift = "0px";
var disabledYShift = "-20px";
var highlightYShift = "-40px";
var image = button.getElementsByTagName("span")[0];
if (isEnabled) {
image.style.backgroundPosition = button.XShift + " " + normalYShift;
button.onmouseover = function () {
image.style.backgroundPosition = this.XShift + " " + highlightYShift;
};
button.onmouseout = function () {
image.style.backgroundPosition = this.XShift + " " + normalYShift;
};
// IE tries to select the background image "button" text (it's
// implemented in a list item) so we have to cache the selection
// on mousedown.
if (uaSniffed.isIE) {
button.onmousedown = function () {
if (doc.activeElement && doc.activeElement !== panels.input) { // we're not even in the input box, so there's no selection
return;
}
panels.ieCachedRange = document.selection.createRange();
panels.ieCachedScrollTop = panels.input.scrollTop;
};
}
if (!button.isHelp) {
button.onclick = function () {
if (this.onmouseout) {
this.onmouseout();
}
doClick(this);
return false;
}
}
}
else {
image.style.backgroundPosition = button.XShift + " " + disabledYShift;
button.onmouseover = button.onmouseout = button.onclick = function () { };
}
}
function bindCommand(method) {
if (typeof method === "string")
method = commandManager[method];
return function () { method.apply(commandManager, arguments); }
}
function makeSpritedButtonRow() {
var buttonBar = panels.buttonBar;
var normalYShift = "0px";
var disabledYShift = "-20px";
var highlightYShift = "-40px";
var buttonRow = document.createElement("ul");
buttonRow.id = "wmd-button-row" + postfix;
buttonRow.className = 'wmd-button-row';
buttonRow = buttonBar.appendChild(buttonRow);
var xPosition = 0;
var makeButton = function (id, title, XShift, textOp) {
var button = document.createElement("li");
button.className = "wmd-button";
button.style.left = xPosition + "px";
xPosition += 25;
var buttonImage = document.createElement("span");
button.id = id + postfix;
button.appendChild(buttonImage);
button.title = title;
button.XShift = XShift;
if (textOp)
button.textOp = textOp;
setupButton(button, true);
buttonRow.appendChild(button);
return button;
};
var makeSpacer = function (num) {
var spacer = document.createElement("li");
spacer.className = "wmd-spacer wmd-spacer" + num;
spacer.id = "wmd-spacer" + num + postfix;
buttonRow.appendChild(spacer);
xPosition += 25;
}
buttons.bold = makeButton("wmd-bold-button", "Strong <strong> Ctrl+B", "0px", bindCommand("doBold"));
buttons.italic = makeButton("wmd-italic-button", "Emphasis <em> Ctrl+I", "-20px", bindCommand("doItalic"));
makeSpacer(1);
buttons.link = makeButton("wmd-link-button", "Hyperlink <a> Ctrl+L", "-40px", bindCommand(function (chunk, postProcessing) {
return this.doLinkOrImage(chunk, postProcessing, false);
}));
buttons.quote = makeButton("wmd-quote-button", "Blockquote <blockquote> Ctrl+Q", "-60px", bindCommand("doBlockquote"));
buttons.code = makeButton("wmd-code-button", "Code Sample <pre><code> Ctrl+K", "-80px", bindCommand("doCode"));
buttons.image = makeButton("wmd-image-button", "Image <img> Ctrl+G", "-100px", bindCommand(function (chunk, postProcessing) {
return this.doLinkOrImage(chunk, postProcessing, true);
}));
makeSpacer(2);
buttons.olist = makeButton("wmd-olist-button", "Numbered List <ol> Ctrl+O", "-120px", bindCommand(function (chunk, postProcessing) {
this.doList(chunk, postProcessing, true);
}));
buttons.ulist = makeButton("wmd-ulist-button", "Bulleted List <ul> Ctrl+U", "-140px", bindCommand(function (chunk, postProcessing) {
this.doList(chunk, postProcessing, false);
}));
buttons.heading = makeButton("wmd-heading-button", "Heading <h1>/<h2> Ctrl+H", "-160px", bindCommand("doHeading"));
buttons.hr = makeButton("wmd-hr-button", "Horizontal Rule <hr> Ctrl+R", "-180px", bindCommand("doHorizontalRule"));
makeSpacer(3);
buttons.undo = makeButton("wmd-undo-button", "Undo - Ctrl+Z", "-200px", null);
buttons.undo.execute = function (manager) { if (manager) manager.undo(); };
var redoTitle = /win/.test(nav.platform.toLowerCase()) ?
"Redo - Ctrl+Y" :
"Redo - Ctrl+Shift+Z"; // mac and other non-Windows platforms
buttons.redo = makeButton("wmd-redo-button", redoTitle, "-220px", null);
buttons.redo.execute = function (manager) { if (manager) manager.redo(); };
if (helpOptions) {
var helpButton = document.createElement("li");
var helpButtonImage = document.createElement("span");
helpButton.appendChild(helpButtonImage);
helpButton.className = "wmd-button wmd-help-button";
helpButton.id = "wmd-help-button" + postfix;
helpButton.XShift = "-240px";
helpButton.isHelp = true;
helpButton.style.right = "0px";
helpButton.title = helpOptions.title || defaultHelpHoverTitle;
helpButton.onclick = helpOptions.handler;
setupButton(helpButton, true);
buttonRow.appendChild(helpButton);
buttons.help = helpButton;
}
setUndoRedoButtonStates();
}
function setUndoRedoButtonStates() {
if (undoManager) {
setupButton(buttons.undo, undoManager.canUndo());
setupButton(buttons.redo, undoManager.canRedo());
}
};
this.setUndoRedoButtonStates = setUndoRedoButtonStates;
}
function CommandManager(pluginHooks) {
this.hooks = pluginHooks;
}
var commandProto = CommandManager.prototype;
// The markdown symbols - 4 spaces = code, > = blockquote, etc.
commandProto.prefixes = "(?:\\s{4,}|\\s*>|\\s*-\\s+|\\s*\\d+\\.|=|\\+|-|_|\\*|#|\\s*\\[[^\n]]+\\]:)";
// Remove markdown symbols from the chunk selection.
commandProto.unwrap = function (chunk) {
var txt = new re("([^\\n])\\n(?!(\\n|" + this.prefixes + "))", "g");
chunk.selection = chunk.selection.replace(txt, "$1 $2");
};
commandProto.wrap = function (chunk, len) {
this.unwrap(chunk);
var regex = new re("(.{1," + len + "})( +|$\\n?)", "gm"),
that = this;
chunk.selection = chunk.selection.replace(regex, function (line, marked) {
if (new re("^" + that.prefixes, "").test(line)) {
return line;
}
return marked + "\n";
});
chunk.selection = chunk.selection.replace(/\s+$/, "");
};
commandProto.doBold = function (chunk, postProcessing) {
return this.doBorI(chunk, postProcessing, 2, "strong text");
};
commandProto.doItalic = function (chunk, postProcessing) {
return this.doBorI(chunk, postProcessing, 1, "emphasized text");
};
// chunk: The selected region that will be enclosed with */**
// nStars: 1 for italics, 2 for bold
// insertText: If you just click the button without highlighting text, this gets inserted
commandProto.doBorI = function (chunk, postProcessing, nStars, insertText) {
// Get rid of whitespace and fixup newlines.
chunk.trimWhitespace();
chunk.selection = chunk.selection.replace(/\n{2,}/g, "\n");
// Look for stars before and after. Is the chunk already marked up?
// note that these regex matches cannot fail
var starsBefore = /(\**$)/.exec(chunk.before)[0];
var starsAfter = /(^\**)/.exec(chunk.after)[0];
var prevStars = Math.min(starsBefore.length, starsAfter.length);
// Remove stars if we have to since the button acts as a toggle.
if ((prevStars >= nStars) && (prevStars != 2 || nStars != 1)) {
chunk.before = chunk.before.replace(re("[*]{" + nStars + "}$", ""), "");
chunk.after = chunk.after.replace(re("^[*]{" + nStars + "}", ""), "");
}
else if (!chunk.selection && starsAfter) {
// It's not really clear why this code is necessary. It just moves
// some arbitrary stuff around.
chunk.after = chunk.after.replace(/^([*_]*)/, "");
chunk.before = chunk.before.replace(/(\s?)$/, "");
var whitespace = re.$1;
chunk.before = chunk.before + starsAfter + whitespace;
}
else {
// In most cases, if you don't have any selected text and click the button
// you'll get a selected, marked up region with the default text inserted.
if (!chunk.selection && !starsAfter) {
chunk.selection = insertText;
}
// Add the true markup.
var markup = nStars <= 1 ? "*" : "**"; // shouldn't the test be = ?
chunk.before = chunk.before + markup;
chunk.after = markup + chunk.after;
}
return;
};
commandProto.stripLinkDefs = function (text, defsToAdd) {
text = text.replace(/^[ ]{0,3}\[(\d+)\]:[ \t]*\n?[ \t]*<?(\S+?)>?[ \t]*\n?[ \t]*(?:(\n*)["(](.+?)[")][ \t]*)?(?:\n+|$)/gm,
function (totalMatch, id, link, newlines, title) {
defsToAdd[id] = totalMatch.replace(/\s*$/, "");
if (newlines) {
// Strip the title and return that separately.
defsToAdd[id] = totalMatch.replace(/["(](.+?)[")]$/, "");
return newlines + title;
}
return "";
});
return text;
};
commandProto.addLinkDef = function (chunk, linkDef) {
var refNumber = 0; // The current reference number
var defsToAdd = {}; //
// Start with a clean slate by removing all previous link definitions.
chunk.before = this.stripLinkDefs(chunk.before, defsToAdd);
chunk.selection = this.stripLinkDefs(chunk.selection, defsToAdd);
chunk.after = this.stripLinkDefs(chunk.after, defsToAdd);
var defs = "";
var regex = /(\[)((?:\[[^\]]*\]|[^\[\]])*)(\][ ]?(?:\n[ ]*)?\[)(\d+)(\])/g;
var addDefNumber = function (def) {
refNumber++;
def = def.replace(/^[ ]{0,3}\[(\d+)\]:/, " [" + refNumber + "]:");
defs += "\n" + def;
};
// note that
// a) the recursive call to getLink cannot go infinite, because by definition
// of regex, inner is always a proper substring of wholeMatch, and
// b) more than one level of nesting is neither supported by the regex
// nor making a lot of sense (the only use case for nesting is a linked image)
var getLink = function (wholeMatch, before, inner, afterInner, id, end) {
inner = inner.replace(regex, getLink);
if (defsToAdd[id]) {
addDefNumber(defsToAdd[id]);
return before + inner + afterInner + refNumber + end;
}
return wholeMatch;
};
chunk.before = chunk.before.replace(regex, getLink);
if (linkDef) {
addDefNumber(linkDef);
}
else {
chunk.selection = chunk.selection.replace(regex, getLink);
}
var refOut = refNumber;
chunk.after = chunk.after.replace(regex, getLink);
if (chunk.after) {
chunk.after = chunk.after.replace(/\n*$/, "");
}
if (!chunk.after) {
chunk.selection = chunk.selection.replace(/\n*$/, "");
}
chunk.after += "\n\n" + defs;
return refOut;
};
// takes the line as entered into the add link/as image dialog and makes
// sure the URL and the optinal title are "nice".
function properlyEncoded(linkdef) {
return linkdef.replace(/^\s*(.*?)(?:\s+"(.+)")?\s*$/, function (wholematch, link, title) {
link = link.replace(/\?.*$/, function (querypart) {
return querypart.replace(/\+/g, " "); // in the query string, a plus and a space are identical
});
link = decodeURIComponent(link); // unencode first, to prevent double encoding
link = encodeURI(link).replace(/'/g, '%27').replace(/\(/g, '%28').replace(/\)/g, '%29');
link = link.replace(/\?.*$/, function (querypart) {
return querypart.replace(/\+/g, "%2b"); // since we replaced plus with spaces in the query part, all pluses that now appear where originally encoded
});
if (title) {
title = title.trim ? title.trim() : title.replace(/^\s*/, "").replace(/\s*$/, "");
title = $.trim(title).replace(/"/g, "quot;").replace(/\(/g, "&#40;").replace(/\)/g, "&#41;").replace(/</g, "&lt;").replace(/>/g, "&gt;");
}
return title ? link + ' "' + title + '"' : link;
});
}
commandProto.doLinkOrImage = function (chunk, postProcessing, isImage) {
chunk.trimWhitespace();
chunk.findTags(/\s*!?\[/, /\][ ]?(?:\n[ ]*)?(\[.*?\])?/);
var background;
if (chunk.endTag.length > 1 && chunk.startTag.length > 0) {
chunk.startTag = chunk.startTag.replace(/!?\[/, "");
chunk.endTag = "";
this.addLinkDef(chunk, null);
}
else {
// We're moving start and end tag back into the selection, since (as we're in the else block) we're not
// *removing* a link, but *adding* one, so whatever findTags() found is now back to being part of the
// link text. linkEnteredCallback takes care of escaping any brackets.
chunk.selection = chunk.startTag + chunk.selection + chunk.endTag;
chunk.startTag = chunk.endTag = "";
if (/\n\n/.test(chunk.selection)) {
this.addLinkDef(chunk, null);
return;
}
var that = this;
// The function to be executed when you enter a link and press OK or Cancel.
// Marks up the link and adds the ref.
var linkEnteredCallback = function (link) {
background.parentNode.removeChild(background);
if (link !== null) {
// ( $1
// [^\\] anything that's not a backslash
// (?:\\\\)* an even number (this includes zero) of backslashes
// )
// (?= followed by
// [[\]] an opening or closing bracket
// )
//
// In other words, a non-escaped bracket. These have to be escaped now to make sure they
// don't count as the end of the link or similar.
// Note that the actual bracket has to be a lookahead, because (in case of to subsequent brackets),
// the bracket in one match may be the "not a backslash" character in the next match, so it
// should not be consumed by the first match.
// The "prepend a space and finally remove it" steps makes sure there is a "not a backslash" at the
// start of the string, so this also works if the selection begins with a bracket. We cannot solve
// this by anchoring with ^, because in the case that the selection starts with two brackets, this
// would mean a zero-width match at the start. Since zero-width matches advance the string position,
// the first bracket could then not act as the "not a backslash" for the second.
chunk.selection = (" " + chunk.selection).replace(/([^\\](?:\\\\)*)(?=[[\]])/g, "$1\\").substr(1);
var linkDef = " [999]: " + properlyEncoded(link);
var num = that.addLinkDef(chunk, linkDef);
chunk.startTag = isImage ? "![" : "[";
chunk.endTag = "][" + num + "]";
if (!chunk.selection) {
if (isImage) {
chunk.selection = "enter image description here";
}
else {
chunk.selection = "enter link description here";
}
}
}
postProcessing();
};
background = ui.createBackground();
if (isImage) {
if (!this.hooks.insertImageDialog(linkEnteredCallback))
ui.prompt(imageDialogText, imageDefaultText, linkEnteredCallback);
}
else {
ui.prompt(linkDialogText, linkDefaultText, linkEnteredCallback);
}
return true;
}
};
// When making a list, hitting shift-enter will put your cursor on the next line
// at the current indent level.
commandProto.doAutoindent = function (chunk, postProcessing) {
var commandMgr = this,
fakeSelection = false;
chunk.before = chunk.before.replace(/(\n|^)[ ]{0,3}([*+-]|\d+[.])[ \t]*\n$/, "\n\n");
chunk.before = chunk.before.replace(/(\n|^)[ ]{0,3}>[ \t]*\n$/, "\n\n");
chunk.before = chunk.before.replace(/(\n|^)[ \t]+\n$/, "\n\n");
// There's no selection, end the cursor wasn't at the end of the line:
// The user wants to split the current list item / code line / blockquote line
// (for the latter it doesn't really matter) in two. Temporarily select the
// (rest of the) line to achieve this.
if (!chunk.selection && !/^[ \t]*(?:\n|$)/.test(chunk.after)) {
chunk.after = chunk.after.replace(/^[^\n]*/, function (wholeMatch) {
chunk.selection = wholeMatch;
return "";
});
fakeSelection = true;
}
if (/(\n|^)[ ]{0,3}([*+-]|\d+[.])[ \t]+.*\n$/.test(chunk.before)) {
if (commandMgr.doList) {
commandMgr.doList(chunk);
}
}
if (/(\n|^)[ ]{0,3}>[ \t]+.*\n$/.test(chunk.before)) {
if (commandMgr.doBlockquote) {
commandMgr.doBlockquote(chunk);
}
}
if (/(\n|^)(\t|[ ]{4,}).*\n$/.test(chunk.before)) {
if (commandMgr.doCode) {
commandMgr.doCode(chunk);
}
}
if (fakeSelection) {
chunk.after = chunk.selection + chunk.after;
chunk.selection = "";
}
};
commandProto.doBlockquote = function (chunk, postProcessing) {
chunk.selection = chunk.selection.replace(/^(\n*)([^\r]+?)(\n*)$/,
function (totalMatch, newlinesBefore, text, newlinesAfter) {
chunk.before += newlinesBefore;
chunk.after = newlinesAfter + chunk.after;
return text;
});
chunk.before = chunk.before.replace(/(>[ \t]*)$/,
function (totalMatch, blankLine) {
chunk.selection = blankLine + chunk.selection;
return "";
});
chunk.selection = chunk.selection.replace(/^(\s|>)+$/, "");
chunk.selection = chunk.selection || "Blockquote";
// The original code uses a regular expression to find out how much of the
// text *directly before* the selection already was a blockquote:
/*
if (chunk.before) {
chunk.before = chunk.before.replace(/\n?$/, "\n");
}
chunk.before = chunk.before.replace(/(((\n|^)(\n[ \t]*)*>(.+\n)*.*)+(\n[ \t]*)*$)/,
function (totalMatch) {
chunk.startTag = totalMatch;
return "";
});
*/
// This comes down to:
// Go backwards as many lines a possible, such that each line
// a) starts with ">", or
// b) is almost empty, except for whitespace, or
// c) is preceeded by an unbroken chain of non-empty lines
// leading up to a line that starts with ">" and at least one more character
// and in addition
// d) at least one line fulfills a)
//
// Since this is essentially a backwards-moving regex, it's susceptible to
// catstrophic backtracking and can cause the browser to hang;
// see e.g. http://meta.stackoverflow.com/questions/9807.
//
// Hence we replaced this by a simple state machine that just goes through the
// lines and checks for a), b), and c).
var match = "",
leftOver = "",
line;
if (chunk.before) {
var lines = chunk.before.replace(/\n$/, "").split("\n");
var inChain = false;
for (var i = 0; i < lines.length; i++) {
var good = false;
line = lines[i];
inChain = inChain && line.length > 0; // c) any non-empty line continues the chain
if (/^>/.test(line)) { // a)
good = true;
if (!inChain && line.length > 1) // c) any line that starts with ">" and has at least one more character starts the chain
inChain = true;
} else if (/^[ \t]*$/.test(line)) { // b)
good = true;
} else {
good = inChain; // c) the line is not empty and does not start with ">", so it matches if and only if we're in the chain
}
if (good) {
match += line + "\n";
} else {
leftOver += match + line;
match = "\n";
}
}
if (!/(^|\n)>/.test(match)) { // d)
leftOver += match;
match = "";
}
}
chunk.startTag = match;
chunk.before = leftOver;
// end of change
if (chunk.after) {
chunk.after = chunk.after.replace(/^\n?/, "\n");
}
chunk.after = chunk.after.replace(/^(((\n|^)(\n[ \t]*)*>(.+\n)*.*)+(\n[ \t]*)*)/,
function (totalMatch) {
chunk.endTag = totalMatch;
return "";
}
);
var replaceBlanksInTags = function (useBracket) {
var replacement = useBracket ? "> " : "";
if (chunk.startTag) {
chunk.startTag = chunk.startTag.replace(/\n((>|\s)*)\n$/,
function (totalMatch, markdown) {
return "\n" + markdown.replace(/^[ ]{0,3}>?[ \t]*$/gm, replacement) + "\n";
});
}
if (chunk.endTag) {
chunk.endTag = chunk.endTag.replace(/^\n((>|\s)*)\n/,
function (totalMatch, markdown) {
return "\n" + markdown.replace(/^[ ]{0,3}>?[ \t]*$/gm, replacement) + "\n";
});
}
};
if (/^(?![ ]{0,3}>)/m.test(chunk.selection)) {
this.wrap(chunk, SETTINGS.lineLength - 2);
chunk.selection = chunk.selection.replace(/^/gm, "> ");
replaceBlanksInTags(true);
chunk.skipLines();
} else {
chunk.selection = chunk.selection.replace(/^[ ]{0,3}> ?/gm, "");
this.unwrap(chunk);
replaceBlanksInTags(false);
if (!/^(\n|^)[ ]{0,3}>/.test(chunk.selection) && chunk.startTag) {
chunk.startTag = chunk.startTag.replace(/\n{0,2}$/, "\n\n");
}
if (!/(\n|^)[ ]{0,3}>.*$/.test(chunk.selection) && chunk.endTag) {
chunk.endTag = chunk.endTag.replace(/^\n{0,2}/, "\n\n");
}
}
chunk.selection = this.hooks.postBlockquoteCreation(chunk.selection);
if (!/\n/.test(chunk.selection)) {
chunk.selection = chunk.selection.replace(/^(> *)/,
function (wholeMatch, blanks) {
chunk.startTag += blanks;
return "";
});
}
};
commandProto.doCode = function (chunk, postProcessing) {
var hasTextBefore = /\S[ ]*$/.test(chunk.before);
var hasTextAfter = /^[ ]*\S/.test(chunk.after);
// Use 'four space' markdown if the selection is on its own
// line or is multiline.
if ((!hasTextAfter && !hasTextBefore) || /\n/.test(chunk.selection)) {
chunk.before = chunk.before.replace(/[ ]{4}$/,
function (totalMatch) {
chunk.selection = totalMatch + chunk.selection;
return "";
});
var nLinesBack = 1;
var nLinesForward = 1;
if (/(\n|^)(\t|[ ]{4,}).*\n$/.test(chunk.before)) {
nLinesBack = 0;
}
if (/^\n(\t|[ ]{4,})/.test(chunk.after)) {
nLinesForward = 0;
}
chunk.skipLines(nLinesBack, nLinesForward);
if (!chunk.selection) {
chunk.startTag = " ";
chunk.selection = "enter code here";
}
else {
if (/^[ ]{0,3}\S/m.test(chunk.selection)) {
if (/\n/.test(chunk.selection))
chunk.selection = chunk.selection.replace(/^/gm, " ");
else // if it's not multiline, do not select the four added spaces; this is more consistent with the doList behavior
chunk.before += " ";
}
else {
chunk.selection = chunk.selection.replace(/^[ ]{4}/gm, "");
}
}
}
else {
// Use backticks (`) to delimit the code block.
chunk.trimWhitespace();
chunk.findTags(/`/, /`/);
if (!chunk.startTag && !chunk.endTag) {
chunk.startTag = chunk.endTag = "`";
if (!chunk.selection) {
chunk.selection = "enter code here";
}
}
else if (chunk.endTag && !chunk.startTag) {
chunk.before += chunk.endTag;
chunk.endTag = "";
}
else {
chunk.startTag = chunk.endTag = "";
}
}
};
commandProto.doList = function (chunk, postProcessing, isNumberedList) {
// These are identical except at the very beginning and end.
// Should probably use the regex extension function to make this clearer.
var previousItemsRegex = /(\n|^)(([ ]{0,3}([*+-]|\d+[.])[ \t]+.*)(\n.+|\n{2,}([*+-].*|\d+[.])[ \t]+.*|\n{2,}[ \t]+\S.*)*)\n*$/;
var nextItemsRegex = /^\n*(([ ]{0,3}([*+-]|\d+[.])[ \t]+.*)(\n.+|\n{2,}([*+-].*|\d+[.])[ \t]+.*|\n{2,}[ \t]+\S.*)*)\n*/;
// The default bullet is a dash but others are possible.
// This has nothing to do with the particular HTML bullet,
// it's just a markdown bullet.
var bullet = "-";
// The number in a numbered list.
var num = 1;
// Get the item prefix - e.g. " 1. " for a numbered list, " - " for a bulleted list.
var getItemPrefix = function () {
var prefix;
if (isNumberedList) {
prefix = " " + num + ". ";
num++;
}
else {
prefix = " " + bullet + " ";
}
return prefix;
};
// Fixes the prefixes of the other list items.
var getPrefixedItem = function (itemText) {
// The numbering flag is unset when called by autoindent.
if (isNumberedList === undefined) {
isNumberedList = /^\s*\d/.test(itemText);
}
// Renumber/bullet the list element.
itemText = itemText.replace(/^[ ]{0,3}([*+-]|\d+[.])\s/gm,
function (_) {
return getItemPrefix();
});
return itemText;
};
chunk.findTags(/(\n|^)*[ ]{0,3}([*+-]|\d+[.])\s+/, null);
if (chunk.before && !/\n$/.test(chunk.before) && !/^\n/.test(chunk.startTag)) {
chunk.before += chunk.startTag;
chunk.startTag = "";
}
if (chunk.startTag) {
var hasDigits = /\d+[.]/.test(chunk.startTag);
chunk.startTag = "";
chunk.selection = chunk.selection.replace(/\n[ ]{4}/g, "\n");
this.unwrap(chunk);
chunk.skipLines();
if (hasDigits) {
// Have to renumber the bullet points if this is a numbered list.
chunk.after = chunk.after.replace(nextItemsRegex, getPrefixedItem);
}
if (isNumberedList == hasDigits) {
return;
}
}
var nLinesUp = 1;
chunk.before = chunk.before.replace(previousItemsRegex,
function (itemText) {
if (/^\s*([*+-])/.test(itemText)) {
bullet = re.$1;
}
nLinesUp = /[^\n]\n\n[^\n]/.test(itemText) ? 1 : 0;
return getPrefixedItem(itemText);
});
if (!chunk.selection) {
chunk.selection = "List item";
}
var prefix = getItemPrefix();
var nLinesDown = 1;
chunk.after = chunk.after.replace(nextItemsRegex,
function (itemText) {
nLinesDown = /[^\n]\n\n[^\n]/.test(itemText) ? 1 : 0;
return getPrefixedItem(itemText);
});
chunk.trimWhitespace(true);
chunk.skipLines(nLinesUp, nLinesDown, true);
chunk.startTag = prefix;
var spaces = prefix.replace(/./g, " ");
this.wrap(chunk, SETTINGS.lineLength - spaces.length);
chunk.selection = chunk.selection.replace(/\n/g, "\n" + spaces);
};
commandProto.doHeading = function (chunk, postProcessing) {
// Remove leading/trailing whitespace and reduce internal spaces to single spaces.
chunk.selection = chunk.selection.replace(/\s+/g, " ");
chunk.selection = chunk.selection.replace(/(^\s+|\s+$)/g, "");
// If we clicked the button with no selected text, we just
// make a level 2 hash header around some default text.
if (!chunk.selection) {
chunk.startTag = "## ";
chunk.selection = "Heading";
chunk.endTag = " ##";
return;
}
var headerLevel = 0; // The existing header level of the selected text.
// Remove any existing hash heading markdown and save the header level.
chunk.findTags(/#+[ ]*/, /[ ]*#+/);
if (/#+/.test(chunk.startTag)) {
headerLevel = re.lastMatch.length;
}
chunk.startTag = chunk.endTag = "";
// Try to get the current header level by looking for - and = in the line
// below the selection.
chunk.findTags(null, /\s?(-+|=+)/);
if (/=+/.test(chunk.endTag)) {
headerLevel = 1;
}
if (/-+/.test(chunk.endTag)) {
headerLevel = 2;
}
// Skip to the next line so we can create the header markdown.
chunk.startTag = chunk.endTag = "";
chunk.skipLines(1, 1);
// We make a level 2 header if there is no current header.
// If there is a header level, we substract one from the header level.
// If it's already a level 1 header, it's removed.
var headerLevelToCreate = headerLevel == 0 ? 2 : headerLevel - 1;
if (headerLevelToCreate > 0) {
// The button only creates level 1 and 2 underline headers.
// Why not have it iterate over hash header levels? Wouldn't that be easier and cleaner?
var headerChar = headerLevelToCreate >= 2 ? "-" : "=";
var len = chunk.selection.length;
if (len > SETTINGS.lineLength) {
len = SETTINGS.lineLength;
}
chunk.endTag = "\n";
while (len--) {
chunk.endTag += headerChar;
}
}
};
commandProto.doHorizontalRule = function (chunk, postProcessing) {
chunk.startTag = "----------\n";
chunk.selection = "";
chunk.skipLines(2, 1, true);
}
})();

108
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(function () {
var output, Converter;
if (typeof exports === "object" && typeof require === "function") { // we're in a CommonJS (e.g. Node.js) module
output = exports;
Converter = require("./Markdown.Converter").Converter;
} else {
output = window.Markdown;
Converter = output.Converter;
}
output.getSanitizingConverter = function () {
var converter = new Converter();
converter.hooks.chain("postConversion", sanitizeHtml);
converter.hooks.chain("postConversion", balanceTags);
return converter;
}
function sanitizeHtml(html) {
return html.replace(/<[^>]*>?/gi, sanitizeTag);
}
// (tags that can be opened/closed) | (tags that stand alone)
var basic_tag_whitelist = /^(<\/?(b|blockquote|code|del|dd|dl|dt|em|h1|h2|h3|i|kbd|li|ol|p|pre|s|sup|sub|strong|strike|ul)>|<(br|hr)\s?\/?>)$/i;
// <a href="url..." optional title>|</a>
var a_white = /^(<a\shref="((https?|ftp):\/\/|\/)[-A-Za-z0-9+&@#\/%?=~_|!:,.;\(\)]+"(\stitle="[^"<>]+")?\s?>|<\/a>)$/i;
// <img src="url..." optional width optional height optional alt optional title
var img_white = /^(<img\ssrc="(https?:\/\/|\/)[-A-Za-z0-9+&@#\/%?=~_|!:,.;\(\)]+"(\swidth="\d{1,3}")?(\sheight="\d{1,3}")?(\salt="[^"<>]*")?(\stitle="[^"<>]*")?\s?\/?>)$/i;
function sanitizeTag(tag) {
if (tag.match(basic_tag_whitelist) || tag.match(a_white) || tag.match(img_white))
return tag;
else
return "";
}
/// <summary>
/// attempt to balance HTML tags in the html string
/// by removing any unmatched opening or closing tags
/// IMPORTANT: we *assume* HTML has *already* been
/// sanitized and is safe/sane before balancing!
///
/// adapted from CODESNIPPET: A8591DBA-D1D3-11DE-947C-BA5556D89593
/// </summary>
function balanceTags(html) {
if (html == "")
return "";
var re = /<\/?\w+[^>]*(\s|$|>)/g;
// convert everything to lower case; this makes
// our case insensitive comparisons easier
var tags = html.toLowerCase().match(re);
// no HTML tags present? nothing to do; exit now
var tagcount = (tags || []).length;
if (tagcount == 0)
return html;
var tagname, tag;
var ignoredtags = "<p><img><br><li><hr>";
var match;
var tagpaired = [];
var tagremove = [];
var needsRemoval = false;
// loop through matched tags in forward order
for (var ctag = 0; ctag < tagcount; ctag++) {
tagname = tags[ctag].replace(/<\/?(\w+).*/, "$1");
// skip any already paired tags
// and skip tags in our ignore list; assume they're self-closed
if (tagpaired[ctag] || ignoredtags.search("<" + tagname + ">") > -1)
continue;
tag = tags[ctag];
match = -1;
if (!/^<\//.test(tag)) {
// this is an opening tag
// search forwards (next tags), look for closing tags
for (var ntag = ctag + 1; ntag < tagcount; ntag++) {
if (!tagpaired[ntag] && tags[ntag] == "</" + tagname + ">") {
match = ntag;
break;
}
}
}
if (match == -1)
needsRemoval = tagremove[ctag] = true; // mark for removal
else
tagpaired[match] = true; // mark paired
}
if (!needsRemoval)
return html;
// delete all orphaned tags from the string
var ctag = 0;
html = html.replace(re, function (match) {
var res = tagremove[ctag] ? "" : match;
ctag++;
return res;
});
return html;
}
})();

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var Attacklab = Attacklab || {};
/* begin showdown.js */
//
// showdown.js -- A javascript port of Markdown.
//
// Copyright (c) 2007 John Fraser.
//
// Original Markdown Copyright (c) 2004-2005 John Gruber
// <http://daringfireball.net/projects/markdown/>
//
// Redistributable under a BSD-style open source license.
// See license.txt for more information.
//
// The full source distribution is at:
//
// A A L
// T C A
// T K B
//
// <http://www.attacklab.net/>
//
//
// Wherever possible, Showdown is a straight, line-by-line port
// of the Perl version of Markdown.
//
// This is not a normal parser design; it's basically just a
// series of string substitutions. It's hard to read and
// maintain this way, but keeping Showdown close to the original
// design makes it easier to port new features.
//
// More importantly, Showdown behaves like markdown.pl in most
// edge cases. So web applications can do client-side preview
// in Javascript, and then build identical HTML on the server.
//
// This port needs the new RegExp functionality of ECMA 262,
// 3rd Edition (i.e. Javascript 1.5). Most modern web browsers
// should do fine. Even with the new regular expression features,
// We do a lot of work to emulate Perl's regex functionality.
// The tricky changes in this file mostly have the "attacklab:"
// label. Major or self-explanatory changes don't.
//
// Smart diff tools like Araxis Merge will be able to match up
// this file with markdown.pl in a useful way. A little tweaking
// helps: in a copy of markdown.pl, replace "#" with "//" and
// replace "$text" with "text". Be sure to ignore whitespace
// and line endings.
//
//
// Showdown usage:
//
// var text = "Markdown *rocks*.";
//
// var converter = new Attacklab.showdown.converter();
// var html = converter.makeHtml(text);
//
// alert(html);
//
// Note: move the sample code to the bottom of this
// file before uncommenting it.
//
//
// Attacklab namespace
//
var Attacklab = Attacklab || {}
//
// Showdown namespace
//
Attacklab.showdown = Attacklab.showdown || {}
//
// converter
//
// Wraps all "globals" so that the only thing
// exposed is makeHtml().
//
Attacklab.showdown.converter = function() {
//
// Globals:
//
// Global hashes, used by various utility routines
var g_urls;
var g_titles;
var g_html_blocks;
// Used to track when we're inside an ordered or unordered list
// (see _ProcessListItems() for details):
var g_list_level = 0;
this.makeHtml = function(text) {
//
// Main function. The order in which other subs are called here is
// essential. Link and image substitutions need to happen before
// _EscapeSpecialCharsWithinTagAttributes(), so that any *'s or _'s in the <a>
// and <img> tags get encoded.
//
// Clear the global hashes. If we don't clear these, you get conflicts
// from other articles when generating a page which contains more than
// one article (e.g. an index page that shows the N most recent
// articles):
g_urls = new Array();
g_titles = new Array();
g_html_blocks = new Array();
// attacklab: Replace ~ with ~T
// This lets us use tilde as an escape char to avoid md5 hashes
// The choice of character is arbitray; anything that isn't
// magic in Markdown will work.
text = text.replace(/~/g,"~T");
// attacklab: Replace $ with ~D
// RegExp interprets $ as a special character
// when it's in a replacement string
text = text.replace(/\$/g,"~D");
// Standardize line endings
text = text.replace(/\r\n/g,"\n"); // DOS to Unix
text = text.replace(/\r/g,"\n"); // Mac to Unix
// Make sure text begins and ends with a couple of newlines:
text = "\n\n" + text + "\n\n";
// Convert all tabs to spaces.
text = _Detab(text);
// Strip any lines consisting only of spaces and tabs.
// This makes subsequent regexen easier to write, because we can
// match consecutive blank lines with /\n+/ instead of something
// contorted like /[ \t]*\n+/ .
text = text.replace(/^[ \t]+$/mg,"");
// Turn block-level HTML blocks into hash entries
text = _HashHTMLBlocks(text);
// Strip link definitions, store in hashes.
text = _StripLinkDefinitions(text);
text = _RunBlockGamut(text);
text = _UnescapeSpecialChars(text);
// attacklab: Restore dollar signs
text = text.replace(/~D/g,"$$");
// attacklab: Restore tildes
text = text.replace(/~T/g,"~");
return text;
}
var _StripLinkDefinitions = function(text) {
//
// Strips link definitions from text, stores the URLs and titles in
// hash references.
//
// Link defs are in the form: ^[id]: url "optional title"
/*
var text = text.replace(/
^[ ]{0,3}\[(.+)\]: // id = $1 attacklab: g_tab_width - 1
[ \t]*
\n? // maybe *one* newline
[ \t]*
<?(\S+?)>? // url = $2
[ \t]*
\n? // maybe one newline
[ \t]*
(?:
(\n*) // any lines skipped = $3 attacklab: lookbehind removed
["(]
(.+?) // title = $4
[")]
[ \t]*
)? // title is optional
(?:\n+|$)
/gm,
function(){...});
*/
var text = text.replace(/^[ ]{0,3}\[(.+)\]:[ \t]*\n?[ \t]*<?(\S+?)>?[ \t]*\n?[ \t]*(?:(\n*)["(](.+?)[")][ \t]*)?(?:\n+)/gm,
function (wholeMatch,m1,m2,m3,m4) {
m1 = m1.toLowerCase();
g_urls[m1] = _EncodeAmpsAndAngles(m2); // Link IDs are case-insensitive
if (m3) {
// Oops, found blank lines, so it's not a title.
// Put back the parenthetical statement we stole.
return m3+m4;
} else if (m4) {
g_titles[m1] = m4.replace(/"/g,"&quot;");
}
// Completely remove the definition from the text
return "";
}
);
return text;
}
var _HashHTMLBlocks = function(text) {
// attacklab: Double up blank lines to reduce lookaround
text = text.replace(/\n/g,"\n\n");
// Hashify HTML blocks:
// We only want to do this for block-level HTML tags, such as headers,
// lists, and tables. That's because we still want to wrap <p>s around
// "paragraphs" that are wrapped in non-block-level tags, such as anchors,
// phrase emphasis, and spans. The list of tags we're looking for is
// hard-coded:
var block_tags_a = "p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|ins|del"
var block_tags_b = "p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math"
// First, look for nested blocks, e.g.:
// <div>
// <div>
// tags for inner block must be indented.
// </div>
// </div>
//
// The outermost tags must start at the left margin for this to match, and
// the inner nested divs must be indented.
// We need to do this before the next, more liberal match, because the next
// match will start at the first `<div>` and stop at the first `</div>`.
// attacklab: This regex can be expensive when it fails.
/*
var text = text.replace(/
( // save in $1
^ // start of line (with /m)
<($block_tags_a) // start tag = $2
\b // word break
// attacklab: hack around khtml/pcre bug...
[^\r]*?\n // any number of lines, minimally matching
</\2> // the matching end tag
[ \t]* // trailing spaces/tabs
(?=\n+) // followed by a newline
) // attacklab: there are sentinel newlines at end of document
/gm,function(){...}};
*/
text = text.replace(/^(<(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|ins|del)\b[^\r]*?\n<\/\2>[ \t]*(?=\n+))/gm,hashElement);
//
// Now match more liberally, simply from `\n<tag>` to `</tag>\n`
//
/*
var text = text.replace(/
( // save in $1
^ // start of line (with /m)
<($block_tags_b) // start tag = $2
\b // word break
// attacklab: hack around khtml/pcre bug...
[^\r]*? // any number of lines, minimally matching
.*</\2> // the matching end tag
[ \t]* // trailing spaces/tabs
(?=\n+) // followed by a newline
) // attacklab: there are sentinel newlines at end of document
/gm,function(){...}};
*/
text = text.replace(/^(<(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math)\b[^\r]*?.*<\/\2>[ \t]*(?=\n+)\n)/gm,hashElement);
// Special case just for <hr />. It was easier to make a special case than
// to make the other regex more complicated.
/*
text = text.replace(/
( // save in $1
\n\n // Starting after a blank line
[ ]{0,3}
(<(hr) // start tag = $2
\b // word break
([^<>])*? //
\/?>) // the matching end tag
[ \t]*
(?=\n{2,}) // followed by a blank line
)
/g,hashElement);
*/
text = text.replace(/(\n[ ]{0,3}(<(hr)\b([^<>])*?\/?>)[ \t]*(?=\n{2,}))/g,hashElement);
// Special case for standalone HTML comments:
/*
text = text.replace(/
( // save in $1
\n\n // Starting after a blank line
[ ]{0,3} // attacklab: g_tab_width - 1
<!
(--[^\r]*?--\s*)+
>
[ \t]*
(?=\n{2,}) // followed by a blank line
)
/g,hashElement);
*/
text = text.replace(/(\n\n[ ]{0,3}<!(--[^\r]*?--\s*)+>[ \t]*(?=\n{2,}))/g,hashElement);
// PHP and ASP-style processor instructions (<?...?> and <%...%>)
/*
text = text.replace(/
(?:
\n\n // Starting after a blank line
)
( // save in $1
[ ]{0,3} // attacklab: g_tab_width - 1
(?:
<([?%]) // $2
[^\r]*?
\2>
)
[ \t]*
(?=\n{2,}) // followed by a blank line
)
/g,hashElement);
*/
text = text.replace(/(?:\n\n)([ ]{0,3}(?:<([?%])[^\r]*?\2>)[ \t]*(?=\n{2,}))/g,hashElement);
// attacklab: Undo double lines (see comment at top of this function)
text = text.replace(/\n\n/g,"\n");
return text;
}
var hashElement = function(wholeMatch,m1) {
var blockText = m1;
// Undo double lines
blockText = blockText.replace(/\n\n/g,"\n");
blockText = blockText.replace(/^\n/,"");
// strip trailing blank lines
blockText = blockText.replace(/\n+$/g,"");
// Replace the element text with a marker ("~KxK" where x is its key)
blockText = "\n\n~K" + (g_html_blocks.push(blockText)-1) + "K\n\n";
return blockText;
};
var _RunBlockGamut = function(text) {
//
// These are all the transformations that form block-level
// tags like paragraphs, headers, and list items.
//
text = _DoHeaders(text);
// Do Horizontal Rules:
var key = hashBlock("<hr />");
text = text.replace(/^[ ]{0,2}([ ]?\*[ ]?){3,}[ \t]*$/gm,key);
text = text.replace(/^[ ]{0,2}([ ]?-[ ]?){3,}[ \t]*$/gm,key);
text = text.replace(/^[ ]{0,2}([ ]?_[ ]?){3,}[ \t]*$/gm,key);
text = _DoLists(text);
text = _DoCodeBlocks(text);
text = _DoBlockQuotes(text);
// We already ran _HashHTMLBlocks() before, in Markdown(), but that
// was to escape raw HTML in the original Markdown source. This time,
// we're escaping the markup we've just created, so that we don't wrap
// <p> tags around block-level tags.
text = _HashHTMLBlocks(text);
text = _FormParagraphs(text);
return text;
}
var _RunSpanGamut = function(text) {
//
// These are all the transformations that occur *within* block-level
// tags like paragraphs, headers, and list items.
//
text = _DoCodeSpans(text);
text = _EscapeSpecialCharsWithinTagAttributes(text);
text = _EncodeBackslashEscapes(text);
// Process anchor and image tags. Images must come first,
// because ![foo][f] looks like an anchor.
text = _DoImages(text);
text = _DoAnchors(text);
// Make links out of things like `<http://example.com/>`
// Must come after _DoAnchors(), because you can use < and >
// delimiters in inline links like [this](<url>).
text = _DoAutoLinks(text);
text = _EncodeAmpsAndAngles(text);
text = _DoItalicsAndBold(text);
// Do hard breaks:
text = text.replace(/ +\n/g," <br>\n");
return text;
}
var _EscapeSpecialCharsWithinTagAttributes = function(text) {
//
// Within tags -- meaning between < and > -- encode [\ ` * _] so they
// don't conflict with their use in Markdown for code, italics and strong.
//
// Build a regex to find HTML tags and comments. See Friedl's
// "Mastering Regular Expressions", 2nd Ed., pp. 200-201.
var regex = /(<[a-z\/!$]("[^"]*"|'[^']*'|[^'">])*>|<!(--.*?--\s*)+>)/gi;
text = text.replace(regex, function(wholeMatch) {
var tag = wholeMatch.replace(/(.)<\/?code>(?=.)/g,"$1`");
tag = escapeCharacters(tag,"\\`*_");
return tag;
});
return text;
}
var _DoAnchors = function(text) {
//
// Turn Markdown link shortcuts into XHTML <a> tags.
//
//
// First, handle reference-style links: [link text] [id]
//
/*
text = text.replace(/
( // wrap whole match in $1
\[
(
(?:
\[[^\]]*\] // allow brackets nested one level
|
[^\[] // or anything else
)*
)
\]
[ ]? // one optional space
(?:\n[ ]*)? // one optional newline followed by spaces
\[
(.*?) // id = $3
\]
)()()()() // pad remaining backreferences
/g,_DoAnchors_callback);
*/
text = text.replace(/(\[((?:\[[^\]]*\]|[^\[\]])*)\][ ]?(?:\n[ ]*)?\[(.*?)\])()()()()/g,writeAnchorTag);
//
// Next, inline-style links: [link text](url "optional title")
//
/*
text = text.replace(/
( // wrap whole match in $1
\[
(
(?:
\[[^\]]*\] // allow brackets nested one level
|
[^\[\]] // or anything else
)
)
\]
\( // literal paren
[ \t]*
() // no id, so leave $3 empty
<?(.*?)>? // href = $4
[ \t]*
( // $5
(['"]) // quote char = $6
(.*?) // Title = $7
\6 // matching quote
[ \t]* // ignore any spaces/tabs between closing quote and )
)? // title is optional
\)
)
/g,writeAnchorTag);
*/
text = text.replace(/(\[((?:\[[^\]]*\]|[^\[\]])*)\]\([ \t]*()<?(.*?)>?[ \t]*((['"])(.*?)\6[ \t]*)?\))/g,writeAnchorTag);
//
// Last, handle reference-style shortcuts: [link text]
// These must come last in case you've also got [link test][1]
// or [link test](/foo)
//
/*
text = text.replace(/
( // wrap whole match in $1
\[
([^\[\]]+) // link text = $2; can't contain '[' or ']'
\]
)()()()()() // pad rest of backreferences
/g, writeAnchorTag);
*/
text = text.replace(/(\[([^\[\]]+)\])()()()()()/g, writeAnchorTag);
return text;
}
var writeAnchorTag = function(wholeMatch,m1,m2,m3,m4,m5,m6,m7) {
if (m7 == undefined) m7 = "";
var whole_match = m1;
var link_text = m2;
var link_id = m3.toLowerCase();
var url = m4;
var title = m7;
if (url == "") {
if (link_id == "") {
// lower-case and turn embedded newlines into spaces
link_id = link_text.toLowerCase().replace(/ ?\n/g," ");
}
url = "#"+link_id;
if (g_urls[link_id] != undefined) {
url = g_urls[link_id];
if (g_titles[link_id] != undefined) {
title = g_titles[link_id];
}
}
else {
if (whole_match.search(/\(\s*\)$/m)>-1) {
// Special case for explicit empty url
url = "";
} else {
return whole_match;
}
}
}
url = escapeCharacters(url,"*_");
var result = "<a href=\"" + url + "\"";
if (title != "") {
title = title.replace(/"/g,"&quot;");
title = escapeCharacters(title,"*_");
result += " title=\"" + title + "\"";
}
result += ">" + link_text + "</a>";
return result;
}
var _DoImages = function(text) {
//
// Turn Markdown image shortcuts into <img> tags.
//
//
// First, handle reference-style labeled images: ![alt text][id]
//
/*
text = text.replace(/
( // wrap whole match in $1
!\[
(.*?) // alt text = $2
\]
[ ]? // one optional space
(?:\n[ ]*)? // one optional newline followed by spaces
\[
(.*?) // id = $3
\]
)()()()() // pad rest of backreferences
/g,writeImageTag);
*/
text = text.replace(/(!\[(.*?)\][ ]?(?:\n[ ]*)?\[(.*?)\])()()()()/g,writeImageTag);
//
// Next, handle inline images: ![alt text](url "optional title")
// Don't forget: encode * and _
/*
text = text.replace(/
( // wrap whole match in $1
!\[
(.*?) // alt text = $2
\]
\s? // One optional whitespace character
\( // literal paren
[ \t]*
() // no id, so leave $3 empty
<?(\S+?)>? // src url = $4
[ \t]*
( // $5
(['"]) // quote char = $6
(.*?) // title = $7
\6 // matching quote
[ \t]*
)? // title is optional
\)
)
/g,writeImageTag);
*/
text = text.replace(/(!\[(.*?)\]\s?\([ \t]*()<?(\S+?)>?[ \t]*((['"])(.*?)\6[ \t]*)?\))/g,writeImageTag);
return text;
}
var writeImageTag = function(wholeMatch,m1,m2,m3,m4,m5,m6,m7) {
var whole_match = m1;
var alt_text = m2;
var link_id = m3.toLowerCase();
var url = m4;
var title = m7;
if (!title) title = "";
if (url == "") {
if (link_id == "") {
// lower-case and turn embedded newlines into spaces
link_id = alt_text.toLowerCase().replace(/ ?\n/g," ");
}
url = "#"+link_id;
if (g_urls[link_id] != undefined) {
url = g_urls[link_id];
if (g_titles[link_id] != undefined) {
title = g_titles[link_id];
}
}
else {
return whole_match;
}
}
alt_text = alt_text.replace(/"/g,"&quot;");
url = escapeCharacters(url,"*_");
var result = "<img src=\"" + url + "\" alt=\"" + alt_text + "\"";
// attacklab: Markdown.pl adds empty title attributes to images.
// Replicate this bug.
//if (title != "") {
title = title.replace(/"/g,"&quot;");
title = escapeCharacters(title,"*_");
result += " title=\"" + title + "\"";
//}
result += " />";
return result;
}
var _DoHeaders = function(text) {
// Setext-style headers:
// Header 1
// ========
//
// Header 2
// --------
//
text = text.replace(/^(.+)[ \t]*\n=+[ \t]*\n+/gm,
function(wholeMatch,m1){return hashBlock("<h1>" + _RunSpanGamut(m1) + "</h1>");});
text = text.replace(/^(.+)[ \t]*\n-+[ \t]*\n+/gm,
function(matchFound,m1){return hashBlock("<h2>" + _RunSpanGamut(m1) + "</h2>");});
// atx-style headers:
// # Header 1
// ## Header 2
// ## Header 2 with closing hashes ##
// ...
// ###### Header 6
//
/*
text = text.replace(/
^(\#{1,6}) // $1 = string of #'s
[ \t]*
(.+?) // $2 = Header text
[ \t]*
\#* // optional closing #'s (not counted)
\n+
/gm, function() {...});
*/
text = text.replace(/^(\#{1,6})[ \t]*(.+?)[ \t]*\#*\n+/gm,
function(wholeMatch,m1,m2) {
var h_level = m1.length;
return hashBlock("<h" + h_level + ">" + _RunSpanGamut(m2) + "</h" + h_level + ">");
});
return text;
}
// This declaration keeps Dojo compressor from outputting garbage:
var _ProcessListItems;
var _DoLists = function(text) {
//
// Form HTML ordered (numbered) and unordered (bulleted) lists.
//
// attacklab: add sentinel to hack around khtml/safari bug:
// http://bugs.webkit.org/show_bug.cgi?id=11231
text += "~0";
// Re-usable pattern to match any entirel ul or ol list:
/*
var whole_list = /
( // $1 = whole list
( // $2
[ ]{0,3} // attacklab: g_tab_width - 1
([*+-]|\d+[.]) // $3 = first list item marker
[ \t]+
)
[^\r]+?
( // $4
~0 // sentinel for workaround; should be $
|
\n{2,}
(?=\S)
(?! // Negative lookahead for another list item marker
[ \t]*
(?:[*+-]|\d+[.])[ \t]+
)
)
)/g
*/
var whole_list = /^(([ ]{0,3}([*+-]|\d+[.])[ \t]+)[^\r]+?(~0|\n{2,}(?=\S)(?![ \t]*(?:[*+-]|\d+[.])[ \t]+)))/gm;
if (g_list_level) {
text = text.replace(whole_list,function(wholeMatch,m1,m2) {
var list = m1;
var list_type = (m2.search(/[*+-]/g)>-1) ? "ul" : "ol";
// Turn double returns into triple returns, so that we can make a
// paragraph for the last item in a list, if necessary:
list = list.replace(/\n{2,}/g,"\n\n\n");;
var result = _ProcessListItems(list);
// Trim any trailing whitespace, to put the closing `</$list_type>`
// up on the preceding line, to get it past the current stupid
// HTML block parser. This is a hack to work around the terrible
// hack that is the HTML block parser.
result = result.replace(/\s+$/,"");
result = "<"+list_type+">" + result + "</"+list_type+">\n";
return result;
});
} else {
whole_list = /(\n\n|^\n?)(([ ]{0,3}([*+-]|\d+[.])[ \t]+)[^\r]+?(~0|\n{2,}(?=\S)(?![ \t]*(?:[*+-]|\d+[.])[ \t]+)))/g;
text = text.replace(whole_list,function(wholeMatch,m1,m2,m3) {
var runup = m1;
var list = m2;
var list_type = (m3.search(/[*+-]/g)>-1) ? "ul" : "ol";
// Turn double returns into triple returns, so that we can make a
// paragraph for the last item in a list, if necessary:
var list = list.replace(/\n{2,}/g,"\n\n\n");;
var result = _ProcessListItems(list);
result = runup + "<"+list_type+">\n" + result + "</"+list_type+">\n";
return result;
});
}
// attacklab: strip sentinel
text = text.replace(/~0/,"");
return text;
}
_ProcessListItems = function(list_str) {
//
// Process the contents of a single ordered or unordered list, splitting it
// into individual list items.
//
// The $g_list_level global keeps track of when we're inside a list.
// Each time we enter a list, we increment it; when we leave a list,
// we decrement. If it's zero, we're not in a list anymore.
//
// We do this because when we're not inside a list, we want to treat
// something like this:
//
// I recommend upgrading to version
// 8. Oops, now this line is treated
// as a sub-list.
//
// As a single paragraph, despite the fact that the second line starts
// with a digit-period-space sequence.
//
// Whereas when we're inside a list (or sub-list), that line will be
// treated as the start of a sub-list. What a kludge, huh? This is
// an aspect of Markdown's syntax that's hard to parse perfectly
// without resorting to mind-reading. Perhaps the solution is to
// change the syntax rules such that sub-lists must start with a
// starting cardinal number; e.g. "1." or "a.".
g_list_level++;
// trim trailing blank lines:
list_str = list_str.replace(/\n{2,}$/,"\n");
// attacklab: add sentinel to emulate \z
list_str += "~0";
/*
list_str = list_str.replace(/
(\n)? // leading line = $1
(^[ \t]*) // leading whitespace = $2
([*+-]|\d+[.]) [ \t]+ // list marker = $3
([^\r]+? // list item text = $4
(\n{1,2}))
(?= \n* (~0 | \2 ([*+-]|\d+[.]) [ \t]+))
/gm, function(){...});
*/
list_str = list_str.replace(/(\n)?(^[ \t]*)([*+-]|\d+[.])[ \t]+([^\r]+?(\n{1,2}))(?=\n*(~0|\2([*+-]|\d+[.])[ \t]+))/gm,
function(wholeMatch,m1,m2,m3,m4){
var item = m4;
var leading_line = m1;
var leading_space = m2;
if (leading_line || (item.search(/\n{2,}/)>-1)) {
item = _RunBlockGamut(_Outdent(item));
}
else {
// Recursion for sub-lists:
item = _DoLists(_Outdent(item));
item = item.replace(/\n$/,""); // chomp(item)
item = _RunSpanGamut(item);
}
return "<li>" + item + "</li>\n";
}
);
// attacklab: strip sentinel
list_str = list_str.replace(/~0/g,"");
g_list_level--;
return list_str;
}
var _DoCodeBlocks = function(text) {
//
// Process Markdown `<pre><code>` blocks.
//
/*
text = text.replace(text,
/(?:\n\n|^)
( // $1 = the code block -- one or more lines, starting with a space/tab
(?:
(?:[ ]{4}|\t) // Lines must start with a tab or a tab-width of spaces - attacklab: g_tab_width
.*\n+
)+
)
(\n*[ ]{0,3}[^ \t\n]|(?=~0)) // attacklab: g_tab_width
/g,function(){...});
*/
// attacklab: sentinel workarounds for lack of \A and \Z, safari\khtml bug
text += "~0";
text = text.replace(/(?:\n\n|^)((?:(?:[ ]{4}|\t).*\n+)+)(\n*[ ]{0,3}[^ \t\n]|(?=~0))/g,
function(wholeMatch,m1,m2) {
var codeblock = m1;
var nextChar = m2;
codeblock = _EncodeCode( _Outdent(codeblock));
codeblock = _Detab(codeblock);
codeblock = codeblock.replace(/^\n+/g,""); // trim leading newlines
codeblock = codeblock.replace(/\n+$/g,""); // trim trailing whitespace
codeblock = "<pre><code>" + codeblock + "\n</code></pre>";
return hashBlock(codeblock) + nextChar;
}
);
// attacklab: strip sentinel
text = text.replace(/~0/,"");
return text;
}
var hashBlock = function(text) {
text = text.replace(/(^\n+|\n+$)/g,"");
return "\n\n~K" + (g_html_blocks.push(text)-1) + "K\n\n";
}
var _DoCodeSpans = function(text) {
//
// * Backtick quotes are used for <code></code> spans.
//
// * You can use multiple backticks as the delimiters if you want to
// include literal backticks in the code span. So, this input:
//
// Just type ``foo `bar` baz`` at the prompt.
//
// Will translate to:
//
// <p>Just type <code>foo `bar` baz</code> at the prompt.</p>
//
// There's no arbitrary limit to the number of backticks you
// can use as delimters. If you need three consecutive backticks
// in your code, use four for delimiters, etc.
//
// * You can use spaces to get literal backticks at the edges:
//
// ... type `` `bar` `` ...
//
// Turns to:
//
// ... type <code>`bar`</code> ...
//
/*
text = text.replace(/
(^|[^\\]) // Character before opening ` can't be a backslash
(`+) // $2 = Opening run of `
( // $3 = The code block
[^\r]*?
[^`] // attacklab: work around lack of lookbehind
)
\2 // Matching closer
(?!`)
/gm, function(){...});
*/
text = text.replace(/(^|[^\\])(`+)([^\r]*?[^`])\2(?!`)/gm,
function(wholeMatch,m1,m2,m3,m4) {
var c = m3;
c = c.replace(/^([ \t]*)/g,""); // leading whitespace
c = c.replace(/[ \t]*$/g,""); // trailing whitespace
c = _EncodeCode(c);
return m1+"<code>"+c+"</code>";
});
return text;
}
var _EncodeCode = function(text) {
//
// Encode/escape certain characters inside Markdown code runs.
// The point is that in code, these characters are literals,
// and lose their special Markdown meanings.
//
// Encode all ampersands; HTML entities are not
// entities within a Markdown code span.
text = text.replace(/&/g,"&amp;");
// Do the angle bracket song and dance:
text = text.replace(/</g,"&lt;");
text = text.replace(/>/g,"&gt;");
// Now, escape characters that are magic in Markdown:
text = escapeCharacters(text,"\*_{}[]\\",false);
// jj the line above breaks this:
//---
//* Item
// 1. Subitem
// special char: *
//---
return text;
}
var _DoItalicsAndBold = function(text) {
// <strong> must go first:
text = text.replace(/([\W_]|^)(\*\*|__)(?=\S)([^\r]*?\S[\*_]*)\2([\W_]|$)/g,
"$1<strong>$3</strong>$4");
text = text.replace(/([\W_]|^)(\*|_)(?=\S)([^\r\*_]*?\S)\2([\W_]|$)/g,
"$1<em>$3</em>$4");
return text;
}
var _DoBlockQuotes = function(text) {
/*
text = text.replace(/
( // Wrap whole match in $1
(
^[ \t]*>[ \t]? // '>' at the start of a line
.+\n // rest of the first line
(.+\n)* // subsequent consecutive lines
\n* // blanks
)+
)
/gm, function(){...});
*/
text = text.replace(/((^[ \t]*>[ \t]?.+\n(.+\n)*\n*)+)/gm,
function(wholeMatch,m1) {
var bq = m1;
// attacklab: hack around Konqueror 3.5.4 bug:
// "----------bug".replace(/^-/g,"") == "bug"
bq = bq.replace(/^[ \t]*>[ \t]?/gm,"~0"); // trim one level of quoting
// attacklab: clean up hack
bq = bq.replace(/~0/g,"");
bq = bq.replace(/^[ \t]+$/gm,""); // trim whitespace-only lines
bq = _RunBlockGamut(bq); // recurse
bq = bq.replace(/(^|\n)/g,"$1 ");
// These leading spaces screw with <pre> content, so we need to fix that:
bq = bq.replace(
/(\s*<pre>[^\r]+?<\/pre>)/gm,
function(wholeMatch,m1) {
var pre = m1;
// attacklab: hack around Konqueror 3.5.4 bug:
pre = pre.replace(/^ /mg,"~0");
pre = pre.replace(/~0/g,"");
return pre;
});
return hashBlock("<blockquote>\n" + bq + "\n</blockquote>");
});
return text;
}
var _FormParagraphs = function(text) {
//
// Params:
// $text - string to process with html <p> tags
//
// Strip leading and trailing lines:
text = text.replace(/^\n+/g,"");
text = text.replace(/\n+$/g,"");
var grafs = text.split(/\n{2,}/g);
var grafsOut = new Array();
//
// Wrap <p> tags.
//
var end = grafs.length;
for (var i=0; i<end; i++) {
var str = grafs[i];
// if this is an HTML marker, copy it
if (str.search(/~K(\d+)K/g) >= 0) {
grafsOut.push(str);
}
else if (str.search(/\S/) >= 0) {
str = _RunSpanGamut(str);
str = str.replace(/^([ \t]*)/g,"<p>");
str += "</p>"
grafsOut.push(str);
}
}
//
// Unhashify HTML blocks
//
end = grafsOut.length;
for (var i=0; i<end; i++) {
// if this is a marker for an html block...
while (grafsOut[i].search(/~K(\d+)K/) >= 0) {
var blockText = g_html_blocks[RegExp.$1];
blockText = blockText.replace(/\$/g,"$$$$"); // Escape any dollar signs
grafsOut[i] = grafsOut[i].replace(/~K\d+K/,blockText);
}
}
return grafsOut.join("\n\n");
}
var _EncodeAmpsAndAngles = function(text) {
// Smart processing for ampersands and angle brackets that need to be encoded.
// Ampersand-encoding based entirely on Nat Irons's Amputator MT plugin:
// http://bumppo.net/projects/amputator/
text = text.replace(/&(?!#?[xX]?(?:[0-9a-fA-F]+|\w+);)/g,"&amp;");
// Encode naked <'s
text = text.replace(/<(?![a-z\/?\$!])/gi,"&lt;");
return text;
}
var _EncodeBackslashEscapes = function(text) {
//
// Parameter: String.
// Returns: The string, with after processing the following backslash
// escape sequences.
//
// attacklab: The polite way to do this is with the new
// escapeCharacters() function:
//
// text = escapeCharacters(text,"\\",true);
// text = escapeCharacters(text,"`*_{}[]()>#+-.!",true);
//
// ...but we're sidestepping its use of the (slow) RegExp constructor
// as an optimization for Firefox. This function gets called a LOT.
text = text.replace(/\\(\\)/g,escapeCharacters_callback);
text = text.replace(/\\([`*_{}\[\]()>#+-.!])/g,escapeCharacters_callback);
return text;
}
var _DoAutoLinks = function(text) {
// note that at this point, all other URL in the text are already hyperlinked as <a href=""></a>
// *except* for the <http://www.foo.com> case
// automatically add < and > around unadorned raw hyperlinks
// must be preceded by space/BOF and followed by non-word/EOF character
text = text.replace(/(^|\s)(https?|ftp)(:\/\/[-A-Z0-9+&@#\/%?=~_|\[\]\(\)!:,\.;]*[-A-Z0-9+&@#\/%=~_|\[\]])($|\W)/gi, "$1<$2$3>$4");
// autolink anything like <http://example.com>
text = text.replace(/<((https?|ftp):[^'">\s]+)>/gi, "<a href=\"$1\">$1</a>");
// Email addresses: <address@domain.foo>
/*
text = text.replace(/
<
(?:mailto:)?
(
[-.\w]+
\@
[-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+
)
>
/gi, _DoAutoLinks_callback());
*/
/* disabling email autolinking, since we don't do that on the server, either
text = text.replace(/<(?:mailto:)?([-.\w]+\@[-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+)>/gi,
function(wholeMatch,m1) {
return _EncodeEmailAddress( _UnescapeSpecialChars(m1) );
}
);
*/
return text;
}
var _UnescapeSpecialChars = function(text) {
//
// Swap back in all the special characters we've hidden.
//
text = text.replace(/~E(\d+)E/g,
function(wholeMatch,m1) {
var charCodeToReplace = parseInt(m1);
return String.fromCharCode(charCodeToReplace);
}
);
return text;
}
var _Outdent = function(text) {
//
// Remove one level of line-leading tabs or spaces
//
// attacklab: hack around Konqueror 3.5.4 bug:
// "----------bug".replace(/^-/g,"") == "bug"
text = text.replace(/^(\t|[ ]{1,4})/gm,"~0"); // attacklab: g_tab_width
// attacklab: clean up hack
text = text.replace(/~0/g,"")
return text;
}
var _Detab = function(text) {
// attacklab: Detab's completely rewritten for speed.
// In perl we could fix it by anchoring the regexp with \G.
// In javascript we're less fortunate.
// expand first n-1 tabs
text = text.replace(/\t(?=\t)/g," "); // attacklab: g_tab_width
// replace the nth with two sentinels
text = text.replace(/\t/g,"~A~B");
// use the sentinel to anchor our regex so it doesn't explode
text = text.replace(/~B(.+?)~A/g,
function(wholeMatch,m1,m2) {
var leadingText = m1;
var numSpaces = 4 - leadingText.length % 4; // attacklab: g_tab_width
// there *must* be a better way to do this:
for (var i=0; i<numSpaces; i++) leadingText+=" ";
return leadingText;
}
);
// clean up sentinels
text = text.replace(/~A/g," "); // attacklab: g_tab_width
text = text.replace(/~B/g,"");
return text;
}
//
// attacklab: Utility functions
//
var escapeCharacters = function(text, charsToEscape, afterBackslash) {
// First we have to escape the escape characters so that
// we can build a character class out of them
var regexString = "([" + charsToEscape.replace(/([\[\]\\])/g,"\\$1") + "])";
if (afterBackslash) {
regexString = "\\\\" + regexString;
}
var regex = new RegExp(regexString,"g");
text = text.replace(regex,escapeCharacters_callback);
return text;
}
var escapeCharacters_callback = function(wholeMatch,m1) {
var charCodeToEscape = m1.charCodeAt(0);
return "~E"+charCodeToEscape+"E";
}
}
/* end showdown.js */
/* begin wmd.js */
Attacklab.wmdBase = function(){
Attacklab.wmd_env = {version:1, output:"Markdown", lineLength:40, buttons:"bold italic link blockquote code image ol ul heading hr" };
// A few handy aliases for readability.
var wmd = window.Attacklab;
var doc = window.document;
var re = window.RegExp;
var nav = window.navigator;
// Some namespaces.
wmd.Util = {};
wmd.Position = {};
wmd.Command = {};
wmd.Global = {};
var util = wmd.Util;
var position = wmd.Position;
var command = wmd.Command;
var global = wmd.Global;
// Used to work around some browser bugs where we can't use feature testing.
global.isIE = /msie/.test(nav.userAgent.toLowerCase());
global.isIE_5or6 = /msie 6/.test(nav.userAgent.toLowerCase()) || /msie 5/.test(nav.userAgent.toLowerCase());
global.isOpera = /opera/.test(nav.userAgent.toLowerCase());
// -------------------------------------------------------------------
// YOUR CHANGES GO HERE
//
// I've tried to localize the things you are likely to change to
// this area.
// -------------------------------------------------------------------
// The text that appears on the upper part of the dialog box when
// entering links.
var linkDialogText = "<p><b>Insert Hyperlink</b></p><p>http://example.com/ \"optional title\"</p>";
var imageDialogText = "<p><b>Insert Image</b></p><p>http://example.com/images/diagram.jpg \"optional title\"<br><br>Need <a href='http://www.google.com/search?q=free+image+hosting' target='_blank'>free image hosting?</a></p>";
// The default text that appears in the dialog input box when entering
// links.
var imageDefaultText = "http://";
var linkDefaultText = "http://";
// The location of your button images relative to the base directory.
var imageDirectory = "/Content/Img/";
// The link and title for the help button
var helpLink = "/editing-help";
var helpHoverTitle = "Markdown Editing Help";
// -------------------------------------------------------------------
// END OF YOUR CHANGES
// -------------------------------------------------------------------
// A collection of the important regions on the page.
// Cached so we don't have to keep traversing the DOM.
wmd.PanelCollection = function(){
this.buttonBar = doc.getElementById("wmd-button-bar");
this.preview = doc.getElementById("wmd-preview");
this.buffer = doc.getElementById("wmd-buffer"); // added by Anton
this.output = doc.getElementById("wmd-output");
this.input = doc.getElementById("wmd-input");
this.SwapBuffers = function () { // added by Anton
var buffer = this.preview, preview = this.buffer;
this.buffer = buffer; this.preview = preview;
buffer.style.visibility = "hidden"; buffer.style.position = "absolute";
preview.style.position = ""; preview.style.visibility = "";
truepreview = (!truepreview);
};
};
// This PanelCollection object can't be filled until after the page
// has loaded.
wmd.panels = undefined;
// Internet explorer has problems with CSS sprite buttons that use HTML
// lists. When you click on the background image "button", IE will
// select the non-existent link text and discard the selection in the
// textarea. The solution to this is to cache the textarea selection
// on the button's mousedown event and set a flag. In the part of the
// code where we need to grab the selection, we check for the flag
// and, if it's set, use the cached area instead of querying the
// textarea.
//
// This ONLY affects Internet Explorer (tested on versions 6, 7
// and 8) and ONLY on button clicks. Keyboard shortcuts work
// normally since the focus never leaves the textarea.
wmd.ieCachedRange = null; // cached textarea selection
wmd.ieRetardedClick = false; // flag
// Returns true if the DOM element is visible, false if it's hidden.
// Checks if display is anything other than none.
util.isVisible = function (elem) {
if (window.getComputedStyle) {
// Most browsers
return window.getComputedStyle(elem, null).getPropertyValue("display") !== "none";
}
else if (elem.currentStyle) {
// IE
return elem.currentStyle["display"] !== "none";
}
};
// Adds a listener callback to a DOM element which is fired on a specified
// event.
util.addEvent = function(elem, event, listener){
if (elem.attachEvent) {
// IE only. The "on" is mandatory.
elem.attachEvent("on" + event, listener);
}
else {
// Other browsers.
elem.addEventListener(event, listener, false);
}
};
// Removes a listener callback from a DOM element which is fired on a specified
// event.
util.removeEvent = function(elem, event, listener){
if (elem.detachEvent) {
// IE only. The "on" is mandatory.
elem.detachEvent("on" + event, listener);
}
else {
// Other browsers.
elem.removeEventListener(event, listener, false);
}
};
// Converts \r\n and \r to \n.
util.fixEolChars = function(text){
text = text.replace(/\r\n/g, "\n");
text = text.replace(/\r/g, "\n");
return text;
};
// Extends a regular expression. Returns a new RegExp
// using pre + regex + post as the expression.
// Used in a few functions where we have a base
// expression and we want to pre- or append some
// conditions to it (e.g. adding "$" to the end).
// The flags are unchanged.
//
// regex is a RegExp, pre and post are strings.
util.extendRegExp = function(regex, pre, post){
if (pre === null || pre === undefined)
{
pre = "";
}
if(post === null || post === undefined)
{
post = "";
}
var pattern = regex.toString();
var flags;
// Replace the flags with empty space and store them.
pattern = pattern.replace(/\/([gim]*)$/, "");
flags = re.$1;
// Remove the slash delimiters on the regular expression.
pattern = pattern.replace(/(^\/|\/$)/g, "");
pattern = pre + pattern + post;
return new re(pattern, flags);
}
// Sets the image for a button passed to the WMD editor.
// Returns a new element with the image attached.
// Adds several style properties to the image.
util.createImage = function(img){
var imgPath = imageDirectory + img;
var elem = doc.createElement("img");
elem.className = "wmd-button";
elem.src = imgPath;
return elem;
};
// This simulates a modal dialog box and asks for the URL when you
// click the hyperlink or image buttons.
//
// text: The html for the input box.
// defaultInputText: The default value that appears in the input box.
// makeLinkMarkdown: The function which is executed when the prompt is dismissed, either via OK or Cancel
util.prompt = function(text, defaultInputText, makeLinkMarkdown){
// These variables need to be declared at this level since they are used
// in multiple functions.
var dialog; // The dialog box.
var background; // The background beind the dialog box.
var input; // The text box where you enter the hyperlink.
if (defaultInputText === undefined) {
defaultInputText = "";
}
// Used as a keydown event handler. Esc dismisses the prompt.
// Key code 27 is ESC.
var checkEscape = function(key){
var code = (key.charCode || key.keyCode);
if (code === 27) {
close(true);
}
};
// Dismisses the hyperlink input box.
// isCancel is true if we don't care about the input text.
// isCancel is false if we are going to keep the text.
var close = function(isCancel){
util.removeEvent(doc.body, "keydown", checkEscape);
var text = input.value;
if (isCancel){
text = null;
}
else{
// Fixes common pasting errors.
text = text.replace('http://http://', 'http://');
text = text.replace('http://https://', 'https://');
text = text.replace('http://ftp://', 'ftp://');
if (text.indexOf('http://') === -1 && text.indexOf('ftp://') === -1 && text.indexOf('https://') === -1) {
text = 'http://' + text;
}
}
dialog.parentNode.removeChild(dialog);
background.parentNode.removeChild(background);
makeLinkMarkdown(text);
return false;
};
// Creates the background behind the hyperlink text entry box.
// Most of this has been moved to CSS but the div creation and
// browser-specific hacks remain here.
var createBackground = function(){
background = doc.createElement("div");
background.className = "wmd-prompt-background";
style = background.style;
style.position = "absolute";
style.top = "0";
style.zIndex = "1000";
if (global.isIE){
style.filter = "alpha(opacity=50)";
}
else {
style.opacity = "0.5";
}
var pageSize = position.getPageSize();
style.height = pageSize[1] + "px";
if(global.isIE){
style.left = doc.documentElement.scrollLeft;
style.width = doc.documentElement.clientWidth;
}
else {
style.left = "0";
style.width = "100%";
}
doc.body.appendChild(background);
};
// Create the text input box form/window.
var createDialog = function(){
// The main dialog box.
dialog = doc.createElement("div");
dialog.className = "wmd-prompt-dialog";
dialog.style.padding = "10px;";
dialog.style.position = "fixed";
dialog.style.width = "400px";
dialog.style.zIndex = "1001";
// The dialog text.
var question = doc.createElement("div");
question.innerHTML = text;
question.style.padding = "5px";
dialog.appendChild(question);
// The web form container for the text box and buttons.
var form = doc.createElement("form");
form.onsubmit = function(){ return close(false); };
style = form.style;
style.padding = "0";
style.margin = "0";
style.cssFloat = "left";
style.width = "100%";
style.textAlign = "center";
style.position = "relative";
dialog.appendChild(form);
// The input text box
input = doc.createElement("input");
input.type = "text";
input.value = defaultInputText;
style = input.style;
style.display = "block";
style.width = "80%";
style.marginLeft = style.marginRight = "auto";
form.appendChild(input);
// The ok button
var okButton = doc.createElement("input");
okButton.type = "button";
okButton.onclick = function(){ return close(false); };
okButton.value = "OK";
style = okButton.style;
style.margin = "10px";
style.display = "inline";
style.width = "7em";
// The cancel button
var cancelButton = doc.createElement("input");
cancelButton.type = "button";
cancelButton.onclick = function(){ return close(true); };
cancelButton.value = "Cancel";
style = cancelButton.style;
style.margin = "10px";
style.display = "inline";
style.width = "7em";
// The order of these buttons is different on macs.
if (/mac/.test(nav.platform.toLowerCase())) {
form.appendChild(cancelButton);
form.appendChild(okButton);
}
else {
form.appendChild(okButton);
form.appendChild(cancelButton);
}
util.addEvent(doc.body, "keydown", checkEscape);
dialog.style.top = "50%";
dialog.style.left = "50%";
dialog.style.display = "block";
if(global.isIE_5or6){
dialog.style.position = "absolute";
dialog.style.top = doc.documentElement.scrollTop + 200 + "px";
dialog.style.left = "50%";
}
doc.body.appendChild(dialog);
// This has to be done AFTER adding the dialog to the form if you
// want it to be centered.
dialog.style.marginTop = -(position.getHeight(dialog) / 2) + "px";
dialog.style.marginLeft = -(position.getWidth(dialog) / 2) + "px";
};
createBackground();
// Why is this in a zero-length timeout?
// Is it working around a browser bug?
window.setTimeout(function(){
createDialog();
var defTextLen = defaultInputText.length;
if (input.selectionStart !== undefined) {
input.selectionStart = 0;
input.selectionEnd = defTextLen;
}
else if (input.createTextRange) {
var range = input.createTextRange();
range.collapse(false);
range.moveStart("character", -defTextLen);
range.moveEnd("character", defTextLen);
range.select();
}
input.focus();
}, 0);
};
// UNFINISHED
// The assignment in the while loop makes jslint cranky.
// I'll change it to a better loop later.
position.getTop = function(elem, isInner){
var result = elem.offsetTop;
if (!isInner) {
while (elem = elem.offsetParent) {
result += elem.offsetTop;
}
}
return result;
};
position.getHeight = function (elem) {
return elem.offsetHeight || elem.scrollHeight;
};
position.getWidth = function (elem) {
return elem.offsetWidth || elem.scrollWidth;
};
position.getPageSize = function(){
var scrollWidth, scrollHeight;
var innerWidth, innerHeight;
// It's not very clear which blocks work with which browsers.
if(self.innerHeight && self.scrollMaxY){
scrollWidth = doc.body.scrollWidth;
scrollHeight = self.innerHeight + self.scrollMaxY;
}
else if(doc.body.scrollHeight > doc.body.offsetHeight){
scrollWidth = doc.body.scrollWidth;
scrollHeight = doc.body.scrollHeight;
}
else{
scrollWidth = doc.body.offsetWidth;
scrollHeight = doc.body.offsetHeight;
}
if(self.innerHeight){
// Non-IE browser
innerWidth = self.innerWidth;
innerHeight = self.innerHeight;
}
else if(doc.documentElement && doc.documentElement.clientHeight){
// Some versions of IE (IE 6 w/ a DOCTYPE declaration)
innerWidth = doc.documentElement.clientWidth;
innerHeight = doc.documentElement.clientHeight;
}
else if(doc.body){
// Other versions of IE
innerWidth = doc.body.clientWidth;
innerHeight = doc.body.clientHeight;
}
var maxWidth = Math.max(scrollWidth, innerWidth);
var maxHeight = Math.max(scrollHeight, innerHeight);
return [maxWidth, maxHeight, innerWidth, innerHeight];
};
// Handles pushing and popping TextareaStates for undo/redo commands.
// I should rename the stack variables to list.
wmd.undoManager = function(callback){
var undoObj = this;
var undoStack = []; // A stack of undo states
var stackPtr = 0; // The index of the current state
var mode = "none";
var lastState; // The last state
var poller;
var timer; // The setTimeout handle for cancelling the timer
var inputStateObj;
// Set the mode for later logic steps.
var setMode = function(newMode, noSave){
if (mode != newMode) {
mode = newMode;
if (!noSave) {
saveState();
}
}
if (!global.isIE || mode != "moving") {
timer = window.setTimeout(refreshState, 1);
}
else {
inputStateObj = null;
}
};
var refreshState = function(){
inputStateObj = new wmd.TextareaState();
timer = undefined;
};
this.setCommandMode = function(){
mode = "command";
saveState();
timer = window.setTimeout(refreshState, 0);
};
this.canUndo = function(){
return stackPtr > 1;
};
this.canRedo = function(){
if (undoStack[stackPtr + 1]) {
return true;
}
return false;
};
// Removes the last state and restores it.
this.undo = function(){
if (undoObj.canUndo()) {
if (lastState) {
// What about setting state -1 to null or checking for undefined?
lastState.restore();
lastState = null;
}
else {
undoStack[stackPtr] = new wmd.TextareaState();
undoStack[--stackPtr].restore();
if (callback) {
callback();
}
}
}
mode = "none";
wmd.panels.input.focus();
refreshState();
};
// Redo an action.
this.redo = function(){
if (undoObj.canRedo()) {
undoStack[++stackPtr].restore();
if (callback) {
callback();
}
}
mode = "none";
wmd.panels.input.focus();
refreshState();
};
// Push the input area state to the stack.
var saveState = function(){
var currState = inputStateObj || new wmd.TextareaState();
if (!currState) {
return false;
}
if (mode == "moving") {
if (!lastState) {
lastState = currState;
}
return;
}
if (lastState) {
if (undoStack[stackPtr - 1].text != lastState.text) {
undoStack[stackPtr++] = lastState;
}
lastState = null;
}
undoStack[stackPtr++] = currState;
undoStack[stackPtr + 1] = null;
if (callback) {
callback();
}
};
var handleCtrlYZ = function(event){
var handled = false;
// check for !event.altKey to support Polish
if ((event.ctrlKey || event.metaKey) && !event.altKey) {
// IE and Opera do not support charCode.
var keyCode = event.charCode || event.keyCode;
var keyCodeChar = String.fromCharCode(keyCode);
switch (keyCodeChar) {
case "y":
undoObj.redo();
handled = true;
break;
case "z":
if (!event.shiftKey) {
undoObj.undo();
}
else {
undoObj.redo();
}
handled = true;
break;
}
}
if (handled) {
if (event.preventDefault) {
event.preventDefault();
}
if (window.event) {
window.event.returnValue = false;
}
return;
}
};
// Set the mode depending on what is going on in the input area.
var handleModeChange = function(event){
if (!event.ctrlKey && !event.metaKey) {
var keyCode = event.keyCode;
if ((keyCode >= 33 && keyCode <= 40) || (keyCode >= 63232 && keyCode <= 63235)) {
// 33 - 40: page up/dn and arrow keys
// 63232 - 63235: page up/dn and arrow keys on safari
setMode("moving");
}
else if (keyCode == 8 || keyCode == 46 || keyCode == 127) {
// 8: backspace
// 46: delete
// 127: delete
setMode("deleting");
}
else if (keyCode == 13) {
// 13: Enter
setMode("newlines");
}
else if (keyCode == 27) {
// 27: escape
setMode("escape");
}
else if ((keyCode < 16 || keyCode > 20) && keyCode != 91) {
// 16-20 are shift, etc.
// 91: left window key
// I think this might be a little messed up since there are
// a lot of nonprinting keys above 20.
setMode("typing");
}
}
};
var setEventHandlers = function(){
util.addEvent(wmd.panels.input, "keypress", function(event){
// keyCode 89: y
// keyCode 90: z
// check for !event.altkey to support Polish
if ((event.ctrlKey || event.metaKey) && !event.altKey && (event.keyCode == 89 || event.keyCode == 90)) {
event.preventDefault();
}
});
var handlePaste = function(){
if (global.isIE || (inputStateObj && inputStateObj.text != wmd.panels.input.value)) {
if (timer == undefined) {
mode = "paste";
saveState();
refreshState();
}
}
};
util.addEvent(wmd.panels.input, "keydown", handleCtrlYZ);
util.addEvent(wmd.panels.input, "keydown", handleModeChange);
util.addEvent(wmd.panels.input, "mousedown", function(){
setMode("moving");
});
wmd.panels.input.onpaste = handlePaste;
wmd.panels.input.ondrop = handlePaste;
};
var init = function(){
setEventHandlers();
refreshState();
saveState();
};
// this.destroy = function(){
// if (poller) {
// poller.destroy();
// }
// };
init();
};
// I think my understanding of how the buttons and callbacks are stored in the array is incomplete.
wmd.editor = function(previewRefreshCallback){
if (!previewRefreshCallback) {
previewRefreshCallback = function(){};
}
var inputBox = wmd.panels.input;
var offsetHeight = 0;
var editObj = this;
var mainDiv;
var mainSpan;
var div; // This name is pretty ambiguous. I should rename this.
// Used to cancel recurring events from setInterval.
var creationHandle;
var undoMgr; // The undo manager
// Perform the button's action.
var doClick = function(button){
inputBox.focus();
if (button.textOp) {
if (undoMgr) {
undoMgr.setCommandMode();
}
var state = new wmd.TextareaState();
if (!state) {
return;
}
var chunks = state.getChunks();
// Some commands launch a "modal" prompt dialog. Javascript
// can't really make a modal dialog box and the WMD code
// will continue to execute while the dialog is displayed.
// This prevents the dialog pattern I'm used to and means
// I can't do something like this:
//
// var link = CreateLinkDialog();
// makeMarkdownLink(link);
//
// Instead of this straightforward method of handling a
// dialog I have to pass any code which would execute
// after the dialog is dismissed (e.g. link creation)
// in a function parameter.
//
// Yes this is awkward and I think it sucks, but there's
// no real workaround. Only the image and link code
// create dialogs and require the function pointers.
var fixupInputArea = function(){
inputBox.focus();
if (chunks) {
state.setChunks(chunks);
}
state.restore();
previewRefreshCallback();
};
var noCleanup = button.textOp(chunks, fixupInputArea);
if(!noCleanup) {
fixupInputArea();
}
}
if (button.execute) {
button.execute(editObj);
}
};
var setUndoRedoButtonStates = function(){
if(undoMgr){
setupButton(document.getElementById("wmd-undo-button"), undoMgr.canUndo());
setupButton(document.getElementById("wmd-redo-button"), undoMgr.canRedo());
}
};
var setupButton = function(button, isEnabled) {
var normalYShift = "0px";
var disabledYShift = "-20px";
var highlightYShift = "-40px";
if(isEnabled) {
button.style.backgroundPosition = button.XShift + " " + normalYShift;
button.onmouseover = function(){
this.style.backgroundPosition = this.XShift + " " + highlightYShift;
};
button.onmouseout = function(){
this.style.backgroundPosition = this.XShift + " " + normalYShift;
};
// IE tries to select the background image "button" text (it's
// implemented in a list item) so we have to cache the selection
// on mousedown.
if(global.isIE) {
button.onmousedown = function() {
wmd.ieRetardedClick = true;
wmd.ieCachedRange = document.selection.createRange();
};
}
if (!button.isHelp)
{
button.onclick = function() {
if (this.onmouseout) {
this.onmouseout();
}
doClick(this);
return false;
}
}
}
else {
button.style.backgroundPosition = button.XShift + " " + disabledYShift;
button.onmouseover = button.onmouseout = button.onclick = function(){};
}
}
var makeSpritedButtonRow = function(){
var buttonBar = document.getElementById("wmd-button-bar");
var normalYShift = "0px";
var disabledYShift = "-20px";
var highlightYShift = "-40px";
var buttonRow = document.createElement("ul");
buttonRow.id = "wmd-button-row";
buttonRow = buttonBar.appendChild(buttonRow);
var boldButton = document.createElement("li");
boldButton.className = "wmd-button";
boldButton.id = "wmd-bold-button";
boldButton.title = "Strong <strong> Ctrl+B";
boldButton.XShift = "0px";
boldButton.textOp = command.doBold;
setupButton(boldButton, true);
buttonRow.appendChild(boldButton);
var italicButton = document.createElement("li");
italicButton.className = "wmd-button";
italicButton.id = "wmd-italic-button";
italicButton.title = "Emphasis <em> Ctrl+I";
italicButton.XShift = "-20px";
italicButton.textOp = command.doItalic;
setupButton(italicButton, true);
buttonRow.appendChild(italicButton);
var spacer1 = document.createElement("li");
spacer1.className = "wmd-spacer";
spacer1.id = "wmd-spacer1";
buttonRow.appendChild(spacer1);
var linkButton = document.createElement("li");
linkButton.className = "wmd-button";
linkButton.id = "wmd-link-button";
linkButton.title = "Hyperlink <a> Ctrl+L";
linkButton.XShift = "-40px";
linkButton.textOp = function(chunk, postProcessing){
return command.doLinkOrImage(chunk, postProcessing, false);
};
setupButton(linkButton, true);
buttonRow.appendChild(linkButton);
var quoteButton = document.createElement("li");
quoteButton.className = "wmd-button";
quoteButton.id = "wmd-quote-button";
quoteButton.title = "Blockquote <blockquote> Ctrl+Q";
quoteButton.XShift = "-60px";
quoteButton.textOp = command.doBlockquote;
setupButton(quoteButton, true);
buttonRow.appendChild(quoteButton);
var codeButton = document.createElement("li");
codeButton.className = "wmd-button";
codeButton.id = "wmd-code-button";
codeButton.title = "Code Sample <pre><code> Ctrl+K";
codeButton.XShift = "-80px";
codeButton.textOp = command.doCode;
setupButton(codeButton, true);
buttonRow.appendChild(codeButton);
var imageButton = document.createElement("li");
imageButton.className = "wmd-button";
imageButton.id = "wmd-image-button";
imageButton.title = "Image <img> Ctrl+G";
imageButton.XShift = "-100px";
imageButton.textOp = function(chunk, postProcessing){
return command.doLinkOrImage(chunk, postProcessing, true);
};
setupButton(imageButton, true);
buttonRow.appendChild(imageButton);
var spacer2 = document.createElement("li");
spacer2.className = "wmd-spacer";
spacer2.id = "wmd-spacer2";
buttonRow.appendChild(spacer2);
var olistButton = document.createElement("li");
olistButton.className = "wmd-button";
olistButton.id = "wmd-olist-button";
olistButton.title = "Numbered List <ol> Ctrl+O";
olistButton.XShift = "-120px";
olistButton.textOp = function(chunk, postProcessing){
command.doList(chunk, postProcessing, true);
};
setupButton(olistButton, true);
buttonRow.appendChild(olistButton);
var ulistButton = document.createElement("li");
ulistButton.className = "wmd-button";
ulistButton.id = "wmd-ulist-button";
ulistButton.title = "Bulleted List <ul> Ctrl+U";
ulistButton.XShift = "-140px";
ulistButton.textOp = function(chunk, postProcessing){
command.doList(chunk, postProcessing, false);
};
setupButton(ulistButton, true);
buttonRow.appendChild(ulistButton);
var headingButton = document.createElement("li");
headingButton.className = "wmd-button";
headingButton.id = "wmd-heading-button";
headingButton.title = "Heading <h1>/<h2> Ctrl+H";
headingButton.XShift = "-160px";
headingButton.textOp = command.doHeading;
setupButton(headingButton, true);
buttonRow.appendChild(headingButton);
var hrButton = document.createElement("li");
hrButton.className = "wmd-button";
hrButton.id = "wmd-hr-button";
hrButton.title = "Horizontal Rule <hr> Ctrl+R";
hrButton.XShift = "-180px";
hrButton.textOp = command.doHorizontalRule;
setupButton(hrButton, true);
buttonRow.appendChild(hrButton);
var spacer3 = document.createElement("li");
spacer3.className = "wmd-spacer";
spacer3.id = "wmd-spacer3";
buttonRow.appendChild(spacer3);
var undoButton = document.createElement("li");
undoButton.className = "wmd-button";
undoButton.id = "wmd-undo-button";
undoButton.title = "Undo - Ctrl+Z";
undoButton.XShift = "-200px";
undoButton.execute = function(manager){
manager.undo();
};
setupButton(undoButton, true);
buttonRow.appendChild(undoButton);
var redoButton = document.createElement("li");
redoButton.className = "wmd-button";
redoButton.id = "wmd-redo-button";
redoButton.title = "Redo - Ctrl+Y";
if (/win/.test(nav.platform.toLowerCase())) {
redoButton.title = "Redo - Ctrl+Y";
}
else {
// mac and other non-Windows platforms
redoButton.title = "Redo - Ctrl+Shift+Z";
}
redoButton.XShift = "-220px";
redoButton.execute = function(manager){
manager.redo();
};
setupButton(redoButton, true);
buttonRow.appendChild(redoButton);
var helpButton = document.createElement("li");
helpButton.className = "wmd-button";
helpButton.id = "wmd-help-button";
helpButton.XShift = "-240px";
helpButton.isHelp = true;
var helpAnchor = document.createElement("a");
helpAnchor.href = helpLink;
helpAnchor.target = "_blank";
helpAnchor.title = helpHoverTitle;
helpButton.appendChild(helpAnchor);
setupButton(helpButton, true);
buttonRow.appendChild(helpButton);
setUndoRedoButtonStates();
}
var setupEditor = function(){
if (/\?noundo/.test(doc.location.href)) {
wmd.nativeUndo = true;
}
if (!wmd.nativeUndo) {
undoMgr = new wmd.undoManager(function(){
previewRefreshCallback();
setUndoRedoButtonStates();
});
}
makeSpritedButtonRow();
var keyEvent = "keydown";
if (global.isOpera) {
keyEvent = "keypress";
}
util.addEvent(inputBox, keyEvent, function(key){
// Check to see if we have a button key and, if so execute the callback. Check for !key.altKey to support Polish.
if ((key.ctrlKey || key.metaKey) && !key.altKey) {
var keyCode = key.charCode || key.keyCode;
var keyCodeStr = String.fromCharCode(keyCode).toLowerCase();
switch(keyCodeStr) {
case "b":
doClick(document.getElementById("wmd-bold-button"));
break;
case "i":
doClick(document.getElementById("wmd-italic-button"));
break;
case "l":
doClick(document.getElementById("wmd-link-button"));
break;
case "q":
doClick(document.getElementById("wmd-quote-button"));
break;
case "k":
doClick(document.getElementById("wmd-code-button"));
break;
case "g":
doClick(document.getElementById("wmd-image-button"));
break;
case "o":
doClick(document.getElementById("wmd-olist-button"));
break;
case "u":
doClick(document.getElementById("wmd-ulist-button"));
break;
case "h":
doClick(document.getElementById("wmd-heading-button"));
break;
case "r":
doClick(document.getElementById("wmd-hr-button"));
break;
case "y":
doClick(document.getElementById("wmd-redo-button"));
break;
case "z":
if(key.shiftKey) {
doClick(document.getElementById("wmd-redo-button"));
}
else {
doClick(document.getElementById("wmd-undo-button"));
}
break;
default:
return;
}
if (key.preventDefault) {
key.preventDefault();
}
if (window.event) {
window.event.returnValue = false;
}
}
});
// Auto-indent on shift-enter
util.addEvent(inputBox, "keyup", function(key){
if (key.shiftKey && !key.ctrlKey && !key.metaKey) {
var keyCode = key.charCode || key.keyCode;
// Character 13 is Enter
if (keyCode === 13) {
fakeButton = {};
fakeButton.textOp = command.doAutoindent;
doClick(fakeButton);
}
}
});
// special handler because IE clears the context of the textbox on ESC
if (global.isIE) {
util.addEvent(inputBox, "keydown", function(key){
var code = key.keyCode;
if (code === 27) {
return false;
}
});
}
if (inputBox.form) {
var submitCallback = inputBox.form.onsubmit;
inputBox.form.onsubmit = function(){
convertToHtml();
if (submitCallback) {
return submitCallback.apply(this, arguments);
}
};
}
};
// Convert the contents of the input textarea to HTML in the output/preview panels.
var convertToHtml = function(){
if (wmd.showdown) {
var markdownConverter = new wmd.showdown.converter();
}
var text = inputBox.value;
var callback = function(){
inputBox.value = text;
};
if (!/markdown/.test(wmd.wmd_env.output.toLowerCase())) {
if (markdownConverter) {
inputBox.value = markdownConverter.makeHtml(text);
window.setTimeout(callback, 0);
}
}
return true;
};
this.undo = function(){
if (undoMgr) {
undoMgr.undo();
}
};
this.redo = function(){
if (undoMgr) {
undoMgr.redo();
}
};
// This is pretty useless. The setupEditor function contents
// should just be copied here.
var init = function(){
setupEditor();
};
this.destroy = function(){
if (undoMgr) {
undoMgr.destroy();
}
if (div.parentNode) {
div.parentNode.removeChild(div);
}
if (inputBox) {
inputBox.style.marginTop = "";
}
window.clearInterval(creationHandle);
};
init();
};
// The input textarea state/contents.
// This is used to implement undo/redo by the undo manager.
wmd.TextareaState = function(){
// Aliases
var stateObj = this;
var inputArea = wmd.panels.input;
this.init = function() {
if (!util.isVisible(inputArea)) {
return;
}
this.setInputAreaSelectionStartEnd();
this.scrollTop = inputArea.scrollTop;
if (!this.text && inputArea.selectionStart || inputArea.selectionStart === 0) {
this.text = inputArea.value;
}
}
// Sets the selected text in the input box after we've performed an
// operation.
this.setInputAreaSelection = function(){
if (!util.isVisible(inputArea)) {
return;
}
if (inputArea.selectionStart !== undefined && !global.isOpera) {
inputArea.focus();
inputArea.selectionStart = stateObj.start;
inputArea.selectionEnd = stateObj.end;
inputArea.scrollTop = stateObj.scrollTop;
}
else if (doc.selection) {
if (doc.activeElement && doc.activeElement !== inputArea) {
return;
}
inputArea.focus();
var range = inputArea.createTextRange();
range.moveStart("character", -inputArea.value.length);
range.moveEnd("character", -inputArea.value.length);
range.moveEnd("character", stateObj.end);
range.moveStart("character", stateObj.start);
range.select();
}
};
this.setInputAreaSelectionStartEnd = function(){
if (inputArea.selectionStart || inputArea.selectionStart === 0) {
stateObj.start = inputArea.selectionStart;
stateObj.end = inputArea.selectionEnd;
}
else if (doc.selection) {
stateObj.text = util.fixEolChars(inputArea.value);
// IE loses the selection in the textarea when buttons are
// clicked. On IE we cache the selection and set a flag
// which we check for here.
var range;
if(wmd.ieRetardedClick && wmd.ieCachedRange) {
range = wmd.ieCachedRange;
wmd.ieRetardedClick = false;
}
else {
range = doc.selection.createRange();
}
var fixedRange = util.fixEolChars(range.text);
var marker = "\x07";
var markedRange = marker + fixedRange + marker;
range.text = markedRange;
var inputText = util.fixEolChars(inputArea.value);
range.moveStart("character", -markedRange.length);
range.text = fixedRange;
stateObj.start = inputText.indexOf(marker);
stateObj.end = inputText.lastIndexOf(marker) - marker.length;
var len = stateObj.text.length - util.fixEolChars(inputArea.value).length;
if (len) {
range.moveStart("character", -fixedRange.length);
while (len--) {
fixedRange += "\n";
stateObj.end += 1;
}
range.text = fixedRange;
}
this.setInputAreaSelection();
}
};
// Restore this state into the input area.
this.restore = function(){
if (stateObj.text != undefined && stateObj.text != inputArea.value) {
inputArea.value = stateObj.text;
}
this.setInputAreaSelection();
inputArea.scrollTop = stateObj.scrollTop;
};
// Gets a collection of HTML chunks from the inptut textarea.
this.getChunks = function(){
var chunk = new wmd.Chunks();
chunk.before = util.fixEolChars(stateObj.text.substring(0, stateObj.start));
chunk.startTag = "";
chunk.selection = util.fixEolChars(stateObj.text.substring(stateObj.start, stateObj.end));
chunk.endTag = "";
chunk.after = util.fixEolChars(stateObj.text.substring(stateObj.end));
chunk.scrollTop = stateObj.scrollTop;
return chunk;
};
// Sets the TextareaState properties given a chunk of markdown.
this.setChunks = function(chunk){
chunk.before = chunk.before + chunk.startTag;
chunk.after = chunk.endTag + chunk.after;
if (global.isOpera) {
chunk.before = chunk.before.replace(/\n/g, "\r\n");
chunk.selection = chunk.selection.replace(/\n/g, "\r\n");
chunk.after = chunk.after.replace(/\n/g, "\r\n");
}
this.start = chunk.before.length;
this.end = chunk.before.length + chunk.selection.length;
this.text = chunk.before + chunk.selection + chunk.after;
this.scrollTop = chunk.scrollTop;
};
this.init();
};
// before: contains all the text in the input box BEFORE the selection.
// after: contains all the text in the input box AFTER the selection.
wmd.Chunks = function(){
};
// startRegex: a regular expression to find the start tag
// endRegex: a regular expresssion to find the end tag
wmd.Chunks.prototype.findTags = function(startRegex, endRegex){
var chunkObj = this;
var regex;
if (startRegex) {
regex = util.extendRegExp(startRegex, "", "$");
this.before = this.before.replace(regex,
function(match){
chunkObj.startTag = chunkObj.startTag + match;
return "";
});
regex = util.extendRegExp(startRegex, "^", "");
this.selection = this.selection.replace(regex,
function(match){
chunkObj.startTag = chunkObj.startTag + match;
return "";
});
}
if (endRegex) {
regex = util.extendRegExp(endRegex, "", "$");
this.selection = this.selection.replace(regex,
function(match){
chunkObj.endTag = match + chunkObj.endTag;
return "";
});
regex = util.extendRegExp(endRegex, "^", "");
this.after = this.after.replace(regex,
function(match){
chunkObj.endTag = match + chunkObj.endTag;
return "";
});
}
};
// If remove is false, the whitespace is transferred
// to the before/after regions.
//
// If remove is true, the whitespace disappears.
wmd.Chunks.prototype.trimWhitespace = function(remove){
this.selection = this.selection.replace(/^(\s*)/, "");
if (!remove) {
this.before += re.$1;
}
this.selection = this.selection.replace(/(\s*)$/, "");
if (!remove) {
this.after = re.$1 + this.after;
}
};
wmd.Chunks.prototype.skipLines = function(nLinesBefore, nLinesAfter, findExtraNewlines){
if (nLinesBefore === undefined) {
nLinesBefore = 1;
}
if (nLinesAfter === undefined) {
nLinesAfter = 1;
}
nLinesBefore++;
nLinesAfter++;
var regexText;
var replacementText;
this.selection = this.selection.replace(/(^\n*)/, "");
this.startTag = this.startTag + re.$1;
this.selection = this.selection.replace(/(\n*$)/, "");
this.endTag = this.endTag + re.$1;
this.startTag = this.startTag.replace(/(^\n*)/, "");
this.before = this.before + re.$1;
this.endTag = this.endTag.replace(/(\n*$)/, "");
this.after = this.after + re.$1;
if (this.before) {
regexText = replacementText = "";
while (nLinesBefore--) {
regexText += "\\n?";
replacementText += "\n";
}
if (findExtraNewlines) {
regexText = "\\n*";
}
this.before = this.before.replace(new re(regexText + "$", ""), replacementText);
}
if (this.after) {
regexText = replacementText = "";
while (nLinesAfter--) {
regexText += "\\n?";
replacementText += "\n";
}
if (findExtraNewlines) {
regexText = "\\n*";
}
this.after = this.after.replace(new re(regexText, ""), replacementText);
}
};
// The markdown symbols - 4 spaces = code, > = blockquote, etc.
command.prefixes = "(?:\\s{4,}|\\s*>|\\s*-\\s+|\\s*\\d+\\.|=|\\+|-|_|\\*|#|\\s*\\[[^\n]]+\\]:)";
// Remove markdown symbols from the chunk selection.
command.unwrap = function(chunk){
var txt = new re("([^\\n])\\n(?!(\\n|" + command.prefixes + "))", "g");
chunk.selection = chunk.selection.replace(txt, "$1 $2");
};
command.wrap = function(chunk, len){
command.unwrap(chunk);
var regex = new re("(.{1," + len + "})( +|$\\n?)", "gm");
chunk.selection = chunk.selection.replace(regex, function(line, marked){
if (new re("^" + command.prefixes, "").test(line)) {
return line;
}
return marked + "\n";
});
chunk.selection = chunk.selection.replace(/\s+$/, "");
};
command.doBold = function(chunk, postProcessing){
return command.doBorI(chunk, postProcessing, 2, "strong text");
};
command.doItalic = function(chunk, postProcessing){
return command.doBorI(chunk, postProcessing, 1, "emphasized text");
};
// chunk: The selected region that will be enclosed with */**
// nStars: 1 for italics, 2 for bold
// insertText: If you just click the button without highlighting text, this gets inserted
command.doBorI = function(chunk, postProcessing, nStars, insertText){
// Get rid of whitespace and fixup newlines.
chunk.trimWhitespace();
chunk.selection = chunk.selection.replace(/\n{2,}/g, "\n");
// Look for stars before and after. Is the chunk already marked up?
chunk.before.search(/(\**$)/);
var starsBefore = re.$1;
chunk.after.search(/(^\**)/);
var starsAfter = re.$1;
var prevStars = Math.min(starsBefore.length, starsAfter.length);
// Remove stars if we have to since the button acts as a toggle.
if ((prevStars >= nStars) && (prevStars != 2 || nStars != 1)) {
chunk.before = chunk.before.replace(re("[*]{" + nStars + "}$", ""), "");
chunk.after = chunk.after.replace(re("^[*]{" + nStars + "}", ""), "");
}
else if (!chunk.selection && starsAfter) {
// It's not really clear why this code is necessary. It just moves
// some arbitrary stuff around.
chunk.after = chunk.after.replace(/^([*_]*)/, "");
chunk.before = chunk.before.replace(/(\s?)$/, "");
var whitespace = re.$1;
chunk.before = chunk.before + starsAfter + whitespace;
}
else {
// In most cases, if you don't have any selected text and click the button
// you'll get a selected, marked up region with the default text inserted.
if (!chunk.selection && !starsAfter) {
chunk.selection = insertText;
}
// Add the true markup.
var markup = nStars <= 1 ? "*" : "**"; // shouldn't the test be = ?
chunk.before = chunk.before + markup;
chunk.after = markup + chunk.after;
}
return;
};
command.stripLinkDefs = function(text, defsToAdd){
text = text.replace(/^[ ]{0,3}\[(\d+)\]:[ \t]*\n?[ \t]*<?(\S+?)>?[ \t]*\n?[ \t]*(?:(\n*)["(](.+?)[")][ \t]*)?(?:\n+|$)/gm,
function(totalMatch, id, link, newlines, title){
defsToAdd[id] = totalMatch.replace(/\s*$/, "");
if (newlines) {
// Strip the title and return that separately.
defsToAdd[id] = totalMatch.replace(/["(](.+?)[")]$/, "");
return newlines + title;
}
return "";
});
return text;
};
command.addLinkDef = function(chunk, linkDef){
var refNumber = 0; // The current reference number
var defsToAdd = {}; //
// Start with a clean slate by removing all previous link definitions.
chunk.before = command.stripLinkDefs(chunk.before, defsToAdd);
chunk.selection = command.stripLinkDefs(chunk.selection, defsToAdd);
chunk.after = command.stripLinkDefs(chunk.after, defsToAdd);
var defs = "";
var regex = /(\[(?:\[[^\]]*\]|[^\[\]])*\][ ]?(?:\n[ ]*)?\[)(\d+)(\])/g;
var addDefNumber = function(def){
refNumber++;
def = def.replace(/^[ ]{0,3}\[(\d+)\]:/, " [" + refNumber + "]:");
defs += "\n" + def;
};
var getLink = function(wholeMatch, link, id, end){
if (defsToAdd[id]) {
addDefNumber(defsToAdd[id]);
return link + refNumber + end;
}
return wholeMatch;
};
chunk.before = chunk.before.replace(regex, getLink);
if (linkDef) {
addDefNumber(linkDef);
}
else {
chunk.selection = chunk.selection.replace(regex, getLink);
}
var refOut = refNumber;
chunk.after = chunk.after.replace(regex, getLink);
if (chunk.after) {
chunk.after = chunk.after.replace(/\n*$/, "");
}
if (!chunk.after) {
chunk.selection = chunk.selection.replace(/\n*$/, "");
}
chunk.after += "\n\n" + defs;
return refOut;
};
command.doLinkOrImage = function(chunk, postProcessing, isImage){
chunk.trimWhitespace();
chunk.findTags(/\s*!?\[/, /\][ ]?(?:\n[ ]*)?(\[.*?\])?/);
if (chunk.endTag.length > 1) {
chunk.startTag = chunk.startTag.replace(/!?\[/, "");
chunk.endTag = "";
command.addLinkDef(chunk, null);
}
else {
if (/\n\n/.test(chunk.selection)) {
command.addLinkDef(chunk, null);
return;
}
// The function to be executed when you enter a link and press OK or Cancel.
// Marks up the link and adds the ref.
var makeLinkMarkdown = function(link){
if (link !== null) {
chunk.startTag = chunk.endTag = "";
// sanitize the link
link = encodeURI(link);
link = link.split("/").slice(0,3).join("/") + "/" + link.split("/").slice(3).join("/").replace(/:/g,"%3A");
var linkDef = " [999]: " + link;
var num = command.addLinkDef(chunk, linkDef);
chunk.startTag = isImage ? "![" : "[";
chunk.endTag = "][" + num + "]";
if (!chunk.selection) {
if (isImage) {
chunk.selection = "alt text";
}
else {
chunk.selection = "link text";
}
}
}
postProcessing();
};
if (isImage) {
util.prompt(imageDialogText, imageDefaultText, makeLinkMarkdown);
}
else {
util.prompt(linkDialogText, linkDefaultText, makeLinkMarkdown);
}
return true;
}
};
util.makeAPI = function(){
wmd.wmd = {};
wmd.wmd.editor = wmd.editor;
wmd.wmd.previewManager = wmd.previewManager;
};
util.startEditor = function(){
var edit; // The editor (buttons + input + outputs) - the main object.
// Anton: I'm hijacking previewMgr in footer.js so I can trigger a refresh
//var previewMgr; // The preview manager.
wmd.panels = new wmd.PanelCollection();
previewMgr = new wmd.previewManager();
var previewRefreshCallback = previewMgr.refresh;
edit = new wmd.editor(previewRefreshCallback);
previewMgr.refresh(true);
};
wmd.previewManager = function(){
var mathjaxRunning = false; // true when MathJax is processing
mathjaxDelay = 0;
var managerObj = this;
var converter;
var poller;
var timeout;
var elapsedTime;
var agingInputText; // input text which produced the output one step back
var oldInputText; // input text which produced the output two steps back
var htmlOut;
var maxDelay = 3000;
var startType = "delayed"; // The other legal value is "manual"
// Adds event listeners to elements and creates the input poller.
var setupEvents = function(inputElem, listener){
util.addEvent(inputElem, "input", listener);
inputElem.onpaste = listener;
inputElem.ondrop = listener;
util.addEvent(inputElem, "keypress", listener);
util.addEvent(inputElem, "keydown", listener);
};
var getDocScrollTop = function(){
var result = 0;
if (window.innerHeight) {
result = window.pageYOffset;
}
else
if (doc.documentElement && doc.documentElement.scrollTop) {
result = doc.documentElement.scrollTop;
}
else
if (doc.body) {
result = doc.body.scrollTop;
}
return result;
};
var makePreviewHtml = function(){
if (mathjaxRunning) {
return;
}
// If there are no registered preview and output panels
// there is nothing to do.
if (!wmd.panels.preview && !wmd.panels.output) {
return;
}
var text = wmd.panels.input.value;
if (text && text == oldInputText) {
return; // Input text hasn't changed.
}
else {
oldInputText = agingInputText
agingInputText = text;
}
var prevTime = new Date().getTime();
if (!converter && wmd.showdown) {
converter = new wmd.showdown.converter();
}
if (converter) {
text = converter.makeHtml(text);
}
// Calculate the processing time of the HTML creation.
// It's used as the delay time in the event listener.
var currTime = new Date().getTime();
elapsedTime = currTime - prevTime;
pushPreviewHtml(text);
htmlOut = text;
};
// setTimeout is already used. Used as an event listener.
var applyTimeout = function(){
if (timeout) {
window.clearTimeout(timeout);
timeout = undefined;
}
if (startType !== "manual") {
var delay = 0;
if (startType === "delayed") {
delay = elapsedTime + mathjaxDelay;
}
if (delay > maxDelay) {
delay = maxDelay;
}
timeout = window.setTimeout(makePreviewHtml, delay);
}
};
var getScaleFactor = function(panel){
if (panel.scrollHeight <= panel.clientHeight) {
return 1;
}
return panel.scrollTop / (panel.scrollHeight - panel.clientHeight);
};
var setPanelScrollTops = function(){
if (wmd.panels.preview) {
wmd.panels.preview.scrollTop = (wmd.panels.preview.scrollHeight - wmd.panels.preview.clientHeight) * getScaleFactor(wmd.panels.preview);
;
}
if (wmd.panels.output) {
wmd.panels.output.scrollTop = (wmd.panels.output.scrollHeight - wmd.panels.output.clientHeight) * getScaleFactor(wmd.panels.output);
;
}
};
this.refresh = function(requiresRefresh){
if (requiresRefresh) {
oldInputText = "";
makePreviewHtml();
}
else {
applyTimeout();
}
};
this.processingTime = function(){
return elapsedTime + mathjaxDelay;
};
// The output HTML
this.output = function(){
return htmlOut;
};
var isFirstTimeFilled = true;
var sanitizeHtml = function (html) {
return html.replace(/<[^<>]*>?/gi, sanitizeTag);
}
// (tags that can be opened/closed) | (tags that stand alone)
var basic_tag_whitelist = /^(<\/?(b|blockquote|code|del|dd|dl|dt|em|h1|h2|h3|i|kbd|li|ol|p|pre|s|sup|sub|strong|strike|ul)>|<(br|hr)\s?\/?>)$/i;
// <a href="url..." optional title>|</a>
var a_white = /^(<a\shref="(\#\d+|(https?|ftp):\/\/[-A-Za-z0-9+&@#\/%?=~_|!:,.;\(\)]+)"(\stitle="[^"<>]+")?\s?>|<\/a>)$/i;
// <img src="url..." optional width optional height optional alt optional title
var img_white = /^(<img\ssrc="https?:(\/\/[-A-Za-z0-9+&@#\/%?=~_|!:,.;\(\)]+)"(\swidth="\d{1,3}")?(\sheight="\d{1,3}")?(\salt="[^"<>]*")?(\stitle="[^"<>]*")?\s?\/?>)$/i;
function sanitizeTag(tag)
{
if(tag.match(basic_tag_whitelist) || tag.match(a_white) || tag.match(img_white))
return tag;
else
return "";
}
var pushPreviewHtml = function(text) {
var emptyTop = position.getTop(wmd.panels.input) - getDocScrollTop();
// Send the encoded HTML to the output textarea/div.
if (wmd.panels.output) {
// The value property is only defined if the output is a textarea.
if (wmd.panels.output.value !== undefined) {
wmd.panels.output.value = text;
wmd.panels.output.readOnly = true;
}
// Otherwise we are just replacing the text in a div.
// Send the HTML wrapped in <pre><code>
else {
var newText = text.replace(/&/g, "&amp;").replace(/</g, "&lt;");
wmd.panels.output.innerHTML = "<pre><code>" + newText + "</code></pre>";
}
}
if (wmd.panels.preview && wmd.panels.buffer) {
if (mathPreview && MathJax) {
wmd.panels.buffer.innerHTML = sanitizeHtml(text);
mathjaxRunning = true;
var prevTime = new Date().getTime();
MathJax.Hub.Queue(["Typeset", MathJax.Hub, wmd.panels.buffer], function () {
wmd.panels.SwapBuffers();
mathjaxRunning = false;
var currTime = new Date().getTime();
mathjaxDelay = currTime - prevTime;
});
} else {
mathjaxDelay = 0;
wmd.panels.preview.innerHTML = sanitizeHtml(text);
}
}
setPanelScrollTops();
if (isFirstTimeFilled) {
isFirstTimeFilled = false;
return;
}
var fullTop = position.getTop(wmd.panels.input) - getDocScrollTop();
if (global.isIE) {
window.setTimeout(function(){
window.scrollBy(0, fullTop - emptyTop);
}, 0);
}
else {
window.scrollBy(0, fullTop - emptyTop);
}
};
var init = function(){
setupEvents(wmd.panels.input, applyTimeout);
makePreviewHtml();
if (wmd.panels.preview) {
wmd.panels.preview.scrollTop = 0;
}
if (wmd.panels.output) {
wmd.panels.output.scrollTop = 0;
}
};
this.destroy = function(){
if (poller) {
poller.destroy();
}
};
init();
};
// When making a list, hitting shift-enter will put your cursor on the next line
// at the current indent level.
command.doAutoindent = function(chunk, postProcessing){
chunk.before = chunk.before.replace(/(\n|^)[ ]{0,3}([*+-]|\d+[.])[ \t]*\n$/, "\n\n");
chunk.before = chunk.before.replace(/(\n|^)[ ]{0,3}>[ \t]*\n$/, "\n\n");
chunk.before = chunk.before.replace(/(\n|^)[ \t]+\n$/, "\n\n");
if(/(\n|^)[ ]{0,3}([*+-]|\d+[.])[ \t]+.*\n$/.test(chunk.before)){
if(command.doList){
command.doList(chunk);
}
}
if(/(\n|^)[ ]{0,3}>[ \t]+.*\n$/.test(chunk.before)){
if(command.doBlockquote){
command.doBlockquote(chunk);
}
}
if(/(\n|^)(\t|[ ]{4,}).*\n$/.test(chunk.before)){
if(command.doCode){
command.doCode(chunk);
}
}
};
command.doBlockquote = function(chunk, postProcessing){
chunk.selection = chunk.selection.replace(/^(\n*)([^\r]+?)(\n*)$/,
function(totalMatch, newlinesBefore, text, newlinesAfter){
chunk.before += newlinesBefore;
chunk.after = newlinesAfter + chunk.after;
return text;
});
chunk.before = chunk.before.replace(/(>[ \t]*)$/,
function(totalMatch, blankLine){
chunk.selection = blankLine + chunk.selection;
return "";
});
chunk.selection = chunk.selection.replace(/^(\s|>)+$/ ,"");
chunk.selection = chunk.selection || "Blockquote";
if(chunk.before){
chunk.before = chunk.before.replace(/\n?$/,"\n");
}
if(chunk.after){
chunk.after = chunk.after.replace(/^\n?/,"\n");
}
chunk.before = chunk.before.replace(/(((\n|^)(\n[ \t]*)*>(.+\n)*.*)+(\n[ \t]*)*$)/,
function(totalMatch){
chunk.startTag = totalMatch;
return "";
});
chunk.after = chunk.after.replace(/^(((\n|^)(\n[ \t]*)*>(.+\n)*.*)+(\n[ \t]*)*)/,
function(totalMatch){
chunk.endTag = totalMatch;
return "";
});
var replaceBlanksInTags = function(useBracket){
var replacement = useBracket ? "> " : "";
if(chunk.startTag){
chunk.startTag = chunk.startTag.replace(/\n((>|\s)*)\n$/,
function(totalMatch, markdown){
return "\n" + markdown.replace(/^[ ]{0,3}>?[ \t]*$/gm, replacement) + "\n";
});
}
if(chunk.endTag){
chunk.endTag = chunk.endTag.replace(/^\n((>|\s)*)\n/,
function(totalMatch, markdown){
return "\n" + markdown.replace(/^[ ]{0,3}>?[ \t]*$/gm, replacement) + "\n";
});
}
};
if(/^(?![ ]{0,3}>)/m.test(chunk.selection)){
command.wrap(chunk, wmd.wmd_env.lineLength - 2);
chunk.selection = chunk.selection.replace(/^/gm, "> ");
replaceBlanksInTags(true);
chunk.skipLines();
}
else{
chunk.selection = chunk.selection.replace(/^[ ]{0,3}> ?/gm, "");
command.unwrap(chunk);
replaceBlanksInTags(false);
if(!/^(\n|^)[ ]{0,3}>/.test(chunk.selection) && chunk.startTag){
chunk.startTag = chunk.startTag.replace(/\n{0,2}$/, "\n\n");
}
if(!/(\n|^)[ ]{0,3}>.*$/.test(chunk.selection) && chunk.endTag){
chunk.endTag=chunk.endTag.replace(/^\n{0,2}/, "\n\n");
}
}
if(!/\n/.test(chunk.selection)){
chunk.selection = chunk.selection.replace(/^(> *)/,
function(wholeMatch, blanks){
chunk.startTag += blanks;
return "";
});
}
};
command.doCode = function(chunk, postProcessing){
var hasTextBefore = /\S[ ]*$/.test(chunk.before);
var hasTextAfter = /^[ ]*\S/.test(chunk.after);
// Use 'four space' markdown if the selection is on its own
// line or is multiline.
if((!hasTextAfter && !hasTextBefore) || /\n/.test(chunk.selection)){
chunk.before = chunk.before.replace(/[ ]{4}$/,
function(totalMatch){
chunk.selection = totalMatch + chunk.selection;
return "";
});
var nLinesBack = 1;
var nLinesForward = 1;
if(/\n(\t|[ ]{4,}).*\n$/.test(chunk.before)){
nLinesBack = 0;
}
if(/^\n(\t|[ ]{4,})/.test(chunk.after)){
nLinesForward = 0;
}
chunk.skipLines(nLinesBack, nLinesForward);
if(!chunk.selection){
chunk.startTag = " ";
chunk.selection = "enter code here";
}
else {
if(/^[ ]{0,3}\S/m.test(chunk.selection)){
chunk.selection = chunk.selection.replace(/^/gm, " ");
}
else{
chunk.selection = chunk.selection.replace(/^[ ]{4}/gm, "");
}
}
}
else{
// Use backticks (`) to delimit the code block.
chunk.trimWhitespace();
chunk.findTags(/`/, /`/);
if(!chunk.startTag && !chunk.endTag){
chunk.startTag = chunk.endTag="`";
if(!chunk.selection){
chunk.selection = "enter code here";
}
}
else if(chunk.endTag && !chunk.startTag){
chunk.before += chunk.endTag;
chunk.endTag = "";
}
else{
chunk.startTag = chunk.endTag="";
}
}
};
command.doList = function(chunk, postProcessing, isNumberedList){
// These are identical except at the very beginning and end.
// Should probably use the regex extension function to make this clearer.
var previousItemsRegex = /(\n|^)(([ ]{0,3}([*+-]|\d+[.])[ \t]+.*)(\n.+|\n{2,}([*+-].*|\d+[.])[ \t]+.*|\n{2,}[ \t]+\S.*)*)\n*$/;
var nextItemsRegex = /^\n*(([ ]{0,3}([*+-]|\d+[.])[ \t]+.*)(\n.+|\n{2,}([*+-].*|\d+[.])[ \t]+.*|\n{2,}[ \t]+\S.*)*)\n*/;
// The default bullet is a dash but others are possible.
// This has nothing to do with the particular HTML bullet,
// it's just a markdown bullet.
var bullet = "-";
// The number in a numbered list.
var num = 1;
// Get the item prefix - e.g. " 1. " for a numbered list, " - " for a bulleted list.
var getItemPrefix = function(){
var prefix;
if(isNumberedList){
prefix = " " + num + ". ";
num++;
}
else{
prefix = " " + bullet + " ";
}
return prefix;
};
// Fixes the prefixes of the other list items.
var getPrefixedItem = function(itemText){
// The numbering flag is unset when called by autoindent.
if(isNumberedList === undefined){
isNumberedList = /^\s*\d/.test(itemText);
}
// Renumber/bullet the list element.
itemText = itemText.replace(/^[ ]{0,3}([*+-]|\d+[.])\s/gm,
function( _ ){
return getItemPrefix();
});
return itemText;
};
chunk.findTags(/(\n|^)*[ ]{0,3}([*+-]|\d+[.])\s+/, null);
if(chunk.before && !/\n$/.test(chunk.before) && !/^\n/.test(chunk.startTag)){
chunk.before += chunk.startTag;
chunk.startTag = "";
}
if(chunk.startTag){
var hasDigits = /\d+[.]/.test(chunk.startTag);
chunk.startTag = "";
chunk.selection = chunk.selection.replace(/\n[ ]{4}/g, "\n");
command.unwrap(chunk);
chunk.skipLines();
if(hasDigits){
// Have to renumber the bullet points if this is a numbered list.
chunk.after = chunk.after.replace(nextItemsRegex, getPrefixedItem);
}
if(isNumberedList == hasDigits){
return;
}
}
var nLinesUp = 1;
chunk.before = chunk.before.replace(previousItemsRegex,
function(itemText){
if(/^\s*([*+-])/.test(itemText)){
bullet = re.$1;
}
nLinesUp = /[^\n]\n\n[^\n]/.test(itemText) ? 1 : 0;
return getPrefixedItem(itemText);
});
if(!chunk.selection){
chunk.selection = "List item";
}
var prefix = getItemPrefix();
var nLinesDown = 1;
chunk.after = chunk.after.replace(nextItemsRegex,
function(itemText){
nLinesDown = /[^\n]\n\n[^\n]/.test(itemText) ? 1 : 0;
return getPrefixedItem(itemText);
});
chunk.trimWhitespace(true);
chunk.skipLines(nLinesUp, nLinesDown, true);
chunk.startTag = prefix;
var spaces = prefix.replace(/./g, " ");
command.wrap(chunk, wmd.wmd_env.lineLength - spaces.length);
chunk.selection = chunk.selection.replace(/\n/g, "\n" + spaces);
};
command.doHeading = function(chunk, postProcessing){
// Remove leading/trailing whitespace and reduce internal spaces to single spaces.
chunk.selection = chunk.selection.replace(/\s+/g, " ");
chunk.selection = chunk.selection.replace(/(^\s+|\s+$)/g, "");
// If we clicked the button with no selected text, we just
// make a level 2 hash header around some default text.
if(!chunk.selection){
chunk.startTag = "## ";
chunk.selection = "Heading";
chunk.endTag = " ##";
return;
}
var headerLevel = 0; // The existing header level of the selected text.
// Remove any existing hash heading markdown and save the header level.
chunk.findTags(/#+[ ]*/, /[ ]*#+/);
if(/#+/.test(chunk.startTag)){
headerLevel = re.lastMatch.length;
}
chunk.startTag = chunk.endTag = "";
// Try to get the current header level by looking for - and = in the line
// below the selection.
chunk.findTags(null, /\s?(-+|=+)/);
if(/=+/.test(chunk.endTag)){
headerLevel = 1;
}
if(/-+/.test(chunk.endTag)){
headerLevel = 2;
}
// Skip to the next line so we can create the header markdown.
chunk.startTag = chunk.endTag = "";
chunk.skipLines(1, 1);
// We make a level 2 header if there is no current header.
// If there is a header level, we substract one from the header level.
// If it's already a level 1 header, it's removed.
var headerLevelToCreate = headerLevel == 0 ? 2 : headerLevel - 1;
if(headerLevelToCreate > 0){
// The button only creates level 1 and 2 underline headers.
// Why not have it iterate over hash header levels? Wouldn't that be easier and cleaner?
var headerChar = headerLevelToCreate >= 2 ? "-" : "=";
var len = chunk.selection.length;
if(len > wmd.wmd_env.lineLength){
len = wmd.wmd_env.lineLength;
}
chunk.endTag = "\n";
while(len--){
chunk.endTag += headerChar;
}
}
};
command.doHorizontalRule = function(chunk, postProcessing){
chunk.startTag = "----------\n";
chunk.selection = "";
chunk.skipLines(2, 1, true);
}
};
// create button-row and bind functions, plus cruft because neutering original Attacklab doesn't always work right
setTimeout('if ($("#show-editor-button").length == 0){Attacklab.wmdBase();Attacklab.Util.startEditor();if ($("#wmd-button-bar>*").length>1){$("#wmd-button-row:first").hide();}} primeMJ();', 500);

122
lms/static/sass/_discussion.scss
View File

@@ -186,3 +186,125 @@ $discussion_input_width: 60%;
}
}
body
{
background-color: White;
font-family: sans-serif;
}
.wmd-panel
{
margin-left: 25%;
margin-right: 25%;
width: 50%;
min-width: 500px;
}
.wmd-button-bar
{
width: 100%;
background-color: Silver;
}
.wmd-input
{
height: 300px;
width: 100%;
background-color: Gainsboro;
border: 1px solid DarkGray;
}
.wmd-preview
{
background-color: #c0e0ff;
}
.wmd-button-row
{
position: relative;
margin-left: 5px;
margin-right: 5px;
margin-bottom: 5px;
margin-top: 10px;
padding: 0px;
height: 20px;
}
.wmd-spacer
{
width: 1px;
height: 20px;
margin-left: 14px;
position: absolute;
background-color: Silver;
display: inline-block;
list-style: none;
}
.wmd-button {
width: 20px;
height: 20px;
padding-left: 2px;
padding-right: 3px;
position: absolute;
display: inline-block;
list-style: none;
cursor: pointer;
}
.wmd-button > span {
background-image: url('/static/images/wmd-buttons.png');
background-repeat: no-repeat;
background-position: 0px 0px;
width: 20px;
height: 20px;
display: inline-block;
}
.wmd-spacer1
{
left: 50px;
}
.wmd-spacer2
{
left: 175px;
}
.wmd-spacer3
{
left: 300px;
}
.wmd-prompt-background
{
background-color: Black;
}
.wmd-prompt-dialog
{
border: 1px solid #999999;
background-color: #F5F5F5;
}
.wmd-prompt-dialog > div {
font-size: 0.8em;
font-family: arial, helvetica, sans-serif;
}
.wmd-prompt-dialog > form > input[type="text"] {
border: 1px solid #999999;
color: black;
}
.wmd-prompt-dialog > form > input[type="button"]{
border: 1px solid #888888;
font-family: trebuchet MS, helvetica, sans-serif;
font-size: 0.8em;
font-weight: bold;
}

6
lms/templates/discussion/inline.html
View File

@@ -10,6 +10,12 @@
<input type="text" class="new-post-title" placeholder="Title"/>
<textarea class="new-post-body"></textarea>
<a class="discussion-new-post" href="javascript:void(0)">New Post</a>
<div class="wmd-panel">
<div id="wmd-button-bar"></div>
<textarea class="wmd-input" id="wmd-input">
</textarea>
<div id="wmd-preview" class="wmd-panel wmd-preview"></div>
</div>
</form>
</div>
% for thread in threads:

1
lms/templates/main.html
View File

@@ -14,6 +14,7 @@
<%static:js group='main_vendor'/>
<%block name="headextra"/>
<!--[if lt IE 9]>
<script src="${static.url('js/html5shiv.js')}"></script>
<![endif]-->