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2f2c2d59100a347b67ee9d7da43dfae4a4ea36cf
typecho/admin/js/pagedown.js
T
joyqi 2f2c2d5910 fix #552
2017-03-30 15:09:28 +08:00

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JavaScript
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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 (text) {
var args = Array.prototype.slice.call(arguments, 0);
args[0] = original.apply(null, args);
return func.apply(null, args);
};
},
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.stackexchange.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 (OPTIONS) {
var pluginHooks = this.hooks = new HookCollection();
// 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("plainLinkText");
// 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("preConversion");
// called with the text once all normalizations have been completed (tabs to spaces, line endings, etc.), but before any conversions have
pluginHooks.addNoop("postNormalization");
// Called with the text before / after creating block elements like code blocks and lists. Note that this is called recursively
// with inner content, e.g. it's called with the full text, and then only with the content of a blockquote. The inner
// call will receive outdented text.
pluginHooks.addNoop("preBlockGamut");
pluginHooks.addNoop("postBlockGamut");
// called with the text of a single block element before / after the span-level conversions (bold, code spans, etc.) have been made
pluginHooks.addNoop("preSpanGamut");
pluginHooks.addNoop("postSpanGamut");
// called with the final cooked HTML code. The result of this plugin hook is the actual output of makeHtml
pluginHooks.addNoop("postConversion");
//
// 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;
OPTIONS = OPTIONS || {};
var asciify = identity, deasciify = identity;
if (OPTIONS.nonAsciiLetters) {
/* In JavaScript regular expressions, \w only denotes [a-zA-Z0-9_].
* That's why there's inconsistent handling e.g. with intra-word bolding
* of Japanese words. That's why we do the following if OPTIONS.nonAsciiLetters
* is true:
*
* Before doing bold and italics, we find every instance
* of a unicode word character in the Markdown source that is not
* matched by \w, and the letter "Q". We take the character's code point
* and encode it in base 51, using the "digits"
*
* A, B, ..., P, R, ..., Y, Z, a, b, ..., y, z
*
* delimiting it with "Q" on both sides. For example, the source
*
* > In Chinese, the smurfs are called 藍精靈, meaning "blue spirits".
*
* turns into
*
* > In Chinese, the smurfs are called QNIhQQMOIQQOuUQ, meaning "blue spirits".
*
* Since everything that is a letter in Unicode is now a letter (or
* several letters) in ASCII, \w and \b should always do the right thing.
*
* After the bold/italic conversion, we decode again; since "Q" was encoded
* alongside all non-ascii characters (as "QBfQ"), and the conversion
* will not generate "Q", the only instances of that letter should be our
* encoded characters. And since the conversion will not break words, the
* "Q...Q" should all still be in one piece.
*
* We're using "Q" as the delimiter because it's probably one of the
* rarest characters, and also because I can't think of any special behavior
* that would ever be triggered by this letter (to use a silly example, if we
* delimited with "H" on the left and "P" on the right, then "Ψ" would be
* encoded as "HTTP", which may cause special behavior). The latter would not
* actually be a huge issue for bold/italic, but may be if we later use it
* in other places as well.
* */
(function () {
var lettersThatJavaScriptDoesNotKnowAndQ = /[Q\u00aa\u00b5\u00ba\u00c0-\u00d6\u00d8-\u00f6\u00f8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376-\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u0523\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0621-\u064a\u0660-\u0669\u066e-\u066f\u0671-\u06d3\u06d5\u06e5-\u06e6\u06ee-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07c0-\u07ea\u07f4-\u07f5\u07fa\u0904-\u0939\u093d\u0950\u0958-\u0961\u0966-\u096f\u0971-\u0972\u097b-\u097f\u0985-\u098c\u098f-\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc-\u09dd\u09df-\u09e1\u09e6-\u09f1\u0a05-\u0a0a\u0a0f-\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32-\u0a33\u0a35-\u0a36\u0a38-\u0a39\u0a59-\u0a5c\u0a5e\u0a66-\u0a6f\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2-\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0-\u0ae1\u0ae6-\u0aef\u0b05-\u0b0c\u0b0f-\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32-\u0b33\u0b35-\u0b39\u0b3d\u0b5c-\u0b5d\u0b5f-\u0b61\u0b66-\u0b6f\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99-\u0b9a\u0b9c\u0b9e-\u0b9f\u0ba3-\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0be6-\u0bef\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c33\u0c35-\u0c39\u0c3d\u0c58-\u0c59\u0c60-\u0c61\u0c66-\u0c6f\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0-\u0ce1\u0ce6-\u0cef\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d28\u0d2a-\u0d39\u0d3d\u0d60-\u0d61\u0d66-\u0d6f\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32-\u0e33\u0e40-\u0e46\u0e50-\u0e59\u0e81-\u0e82\u0e84\u0e87-\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa-\u0eab\u0ead-\u0eb0\u0eb2-\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0ed0-\u0ed9\u0edc-\u0edd\u0f00\u0f20-\u0f29\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8b\u1000-\u102a\u103f-\u1049\u1050-\u1055\u105a-\u105d\u1061\u1065-\u1066\u106e-\u1070\u1075-\u1081\u108e\u1090-\u1099\u10a0-\u10c5\u10d0-\u10fa\u10fc\u1100-\u1159\u115f-\u11a2\u11a8-\u11f9\u1200-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f4\u1401-\u166c\u166f-\u1676\u1681-\u169a\u16a0-\u16ea\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u17e0-\u17e9\u1810-\u1819\u1820-\u1877\u1880-\u18a8\u18aa\u1900-\u191c\u1946-\u196d\u1970-\u1974\u1980-\u19a9\u19c1-\u19c7\u19d0-\u19d9\u1a00-\u1a16\u1b05-\u1b33\u1b45-\u1b4b\u1b50-\u1b59\u1b83-\u1ba0\u1bae-\u1bb9\u1c00-\u1c23\u1c40-\u1c49\u1c4d-\u1c7d\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u203f-\u2040\u2054\u2071\u207f\u2090-\u2094\u2102\u2107\u210a-\u2113\u2115\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2183-\u2184\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2c6f\u2c71-\u2c7d\u2c80-\u2ce4\u2d00-\u2d25\u2d30-\u2d65\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u2e2f\u3005-\u3006\u3031-\u3035\u303b-\u303c\u3041-\u3096\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31b7\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fc3\ua000-\ua48c\ua500-\ua60c\ua610-\ua62b\ua640-\ua65f\ua662-\ua66e\ua67f-\ua697\ua717-\ua71f\ua722-\ua788\ua78b-\ua78c\ua7fb-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8d0-\ua8d9\ua900-\ua925\ua930-\ua946\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa50-\uaa59\uac00-\ud7a3\uf900-\ufa2d\ufa30-\ufa6a\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40-\ufb41\ufb43-\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe33-\ufe34\ufe4d-\ufe4f\ufe70-\ufe74\ufe76-\ufefc\uff10-\uff19\uff21-\uff3a\uff3f\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc]/g;
var cp_Q = "Q".charCodeAt(0);
var cp_A = "A".charCodeAt(0);
var cp_Z = "Z".charCodeAt(0);
var dist_Za = "a".charCodeAt(0) - cp_Z - 1;
asciify = function(text) {
return text.replace(lettersThatJavaScriptDoesNotKnowAndQ, function (m) {
var c = m.charCodeAt(0);
var s = "";
var v;
while (c > 0) {
v = (c % 51) + cp_A;
if (v >= cp_Q)
v++;
if (v > cp_Z)
v += dist_Za;
s = String.fromCharCode(v) + s;
c = c / 51 | 0;
}
return "Q" + s + "Q";
})
};
deasciify = function(text) {
return text.replace(/Q([A-PR-Za-z]{1,3})Q/g, function (m, s) {
var c = 0;
var v;
for (var i = 0; i < s.length; i++) {
v = s.charCodeAt(i);
if (v > cp_Z)
v -= dist_Za;
if (v > cp_Q)
v--;
v -= cp_A;
c = (c * 51) + v;
}
return String.fromCharCode(c);
})
}
})();
}
var _DoItalicsAndBold = OPTIONS.asteriskIntraWordEmphasis ? _DoItalicsAndBold_AllowIntrawordWithAsterisk : _DoItalicsAndBoldStrict;
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, "");
text = pluginHooks.postNormalization(text);
// 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, hashMatch);
//
// 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, hashMatch);
// 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,hashMatch);
*/
text = text.replace(/\n[ ]{0,3}((<(hr)\b([^<>])*?\/?>)[ \t]*(?=\n{2,}))/g, hashMatch);
// 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.stackexchange.com/q/95256
>
[ \t]*
(?=\n{2,}) // followed by a blank line
)
/g,hashMatch);
*/
text = text.replace(/\n\n[ ]{0,3}(<!(--(?:|(?:[^>-]|-[^>])(?:[^-]|-[^-])*)--)>[ \t]*(?=\n{2,}))/g, hashMatch);
// 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
(?:
<([?%]) // $2
[^\r]*?
\2>
)
[ \t]*
(?=\n{2,}) // followed by a blank line
)
/g,hashMatch);
*/
text = text.replace(/(?:\n\n)([ ]{0,3}(?:<([?%])[^\r]*?\2>)[ \t]*(?=\n{2,}))/g, hashMatch);
return text;
}
function hashBlock(text) {
text = text.replace(/(^\n+|\n+$)/g, "");
// Replace the element text with a marker ("~KxK" where x is its key)
return "\n\n~K" + (g_html_blocks.push(text) - 1) + "K\n\n";
}
function hashMatch(wholeMatch, m1) {
return hashBlock(m1);
}
var blockGamutHookCallback = function (t) { return _RunBlockGamut(t); }
function _RunBlockGamut(text, doNotUnhash) {
//
// These are all the transformations that form block-level
// tags like paragraphs, headers, and list items.
//
text = pluginHooks.preBlockGamut(text, blockGamutHookCallback);
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]*$/gm, replacement);
text = _DoLists(text);
text = _DoCodeBlocks(text);
text = _DoBlockQuotes(text);
text = pluginHooks.postBlockGamut(text, blockGamutHookCallback);
// We already ran _HashHTMLBlocks() before, in Markdown(), but that
// was to escape raw HTML in the original Markdown source. This time,
// we're escaping the markup we've just created, so that we don't wrap
// <p> tags around block-level tags.
text = _HashHTMLBlocks(text);
text = _FormParagraphs(text, doNotUnhash);
return text;
}
function _RunSpanGamut(text) {
//
// These are all the transformations that occur *within* block-level
// tags like paragraphs, headers, and list items.
//
text = pluginHooks.preSpanGamut(text);
text = _DoCodeSpans(text);
text = _EscapeSpecialCharsWithinTagAttributes(text);
text = _EncodeBackslashEscapes(text);
// Process anchor and image tags. Images must come first,
// because ![foo][f] looks like an anchor.
text = _DoImages(text);
text = _DoAnchors(text);
// Make links out of things like `<http://example.com/>`
// Must come after _DoAnchors(), because you can use < and >
// delimiters in inline links like [this](<url>).
text = _DoAutoLinks(text);
text = text.replace(/~P/g, "://"); // put in place to prevent autolinking; reset now
text = _EncodeAmpsAndAngles(text);
text = _DoItalicsAndBold(text);
// Do hard breaks:
text = text.replace(/ +\n/g, " <br>\n");
text = pluginHooks.postSpanGamut(text);
return text;
}
function _EscapeSpecialCharsWithinTagAttributes(text) {
//
// Within tags -- meaning between < and > -- encode [\ ` * _] so they
// don't conflict with their use in Markdown for code, italics and strong.
//
// Build a regex to find HTML tags and comments. See Friedl's
// "Mastering Regular Expressions", 2nd Ed., pp. 200-201.
// SE: changed the comment part of the regex
var regex = /(<[a-z\/!$]("[^"]*"|'[^']*'|[^'">])*>|<!(--(?:|(?:[^>-]|-[^>])(?:[^-]|-[^-])*)--)>)/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.stackexchange.com/questions/95987
return tag;
});
return text;
}
function _DoAnchors(text) {
if (text.indexOf("[") === -1)
return 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 = attributeSafeUrl(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) {
if (text.indexOf("![") === -1)
return 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;").replace(/'/g, "&#39;");
}
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, isInsideParagraphlessListItem) {
//
// 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 first_number;
if (list_type === "ol")
first_number = parseInt(m2, 10)
var result = _ProcessListItems(list, list_type, isInsideParagraphlessListItem);
// Trim any trailing whitespace, to put the closing `</$list_type>`
// up on the preceding line, to get it past the current stupid
// HTML block parser. This is a hack to work around the terrible
// hack that is the HTML block parser.
result = result.replace(/\s+$/, "");
var opening = "<" + list_type;
if (first_number && first_number !== 1)
opening += " start=\"" + first_number + "\"";
result = opening + ">" + 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 first_number;
if (list_type === "ol")
first_number = parseInt(m3, 10)
var result = _ProcessListItems(list, list_type);
var opening = "<" + list_type;
if (first_number && first_number !== 1)
opening += " start=\"" + first_number + "\"";
result = runup + opening + ">\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, isInsideParagraphlessListItem) {
//
// 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), /* isInsideParagraphlessListItem= */ true);
item = item.replace(/\n$/, ""); // chomp(item)
if (!isInsideParagraphlessListItem) // only the outer-most item should run this, otherwise it's run multiple times for the inner ones
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|^)
( // $1 = the code block -- one or more lines, starting with a space/tab
(?:
(?:[ ]{4}|\t) // Lines must start with a tab or a tab-width of spaces - attacklab: g_tab_width
.*\n+
)+
)
(\n*[ ]{0,3}[^ \t\n]|(?=~0)) // attacklab: g_tab_width
/g ,function(){...});
*/
// attacklab: sentinel workarounds for lack of \A and \Z, safari\khtml bug
text += "~0";
text = text.replace(/(?:\n\n|^\n?)((?:(?:[ ]{4}|\t).*\n+)+)(\n*[ ]{0,3}[^ \t\n]|(?=~0))/g,
function (wholeMatch, m1, m2) {
var codeblock = m1;
var nextChar = m2;
codeblock = _EncodeCode(_Outdent(codeblock));
codeblock = _Detab(codeblock);
codeblock = codeblock.replace(/^\n+/g, ""); // trim leading newlines
codeblock = codeblock.replace(/\n+$/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 _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 or backtick
(`+) // $2 = Opening run of `
(?!`) // and no more backticks -- match the full run
( // $3 = The code block
[^\r]*?
[^`] // attacklab: work around lack of lookbehind
)
\2 // Matching closer
(?!`)
/gm, function(){...});
*/
text = text.replace(/(^|[^\\`])(`+)(?!`)([^\r]*?[^`])\2(?!`)/gm,
function (wholeMatch, m1, m2, m3, m4) {
var c = m3;
c = c.replace(/^([ \t]*)/g, ""); // leading whitespace
c = c.replace(/[ \t]*$/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 _DoItalicsAndBoldStrict(text) {
if (text.indexOf("*") === -1 && text.indexOf("_") === - 1)
return text;
text = asciify(text);
// <strong> must go first:
// (^|[\W_]) Start with a non-letter or beginning of string. Store in \1.
// (?:(?!\1)|(?=^)) Either the next character is *not* the same as the previous,
// or we started at the end of the string (in which case the previous
// group had zero width, so we're still there). Because the next
// character is the marker, this means that if there are e.g. multiple
// underscores in a row, we can only match the left-most ones (which
// prevents foo___bar__ from getting bolded)
// (\*|_) The marker character itself, asterisk or underscore. Store in \2.
// \2 The marker again, since bold needs two.
// (?=\S) The first bolded character cannot be a space.
// ([^\r]*?\S) The actual bolded string. At least one character, and it cannot *end*
// with a space either. Note that like in many other places, [^\r] is
// just a workaround for JS' lack of single-line regexes; it's equivalent
// to a . in an /s regex, because the string cannot contain any \r (they
// are removed in the normalizing step).
// \2\2 The marker character, twice -- end of bold.
// (?!\2) Not followed by another marker character (ensuring that we match the
// rightmost two in a longer row)...
// (?=[\W_]|$) ...but by any other non-word character or the end of string.
text = text.replace(/(^|[\W_])(?:(?!\1)|(?=^))(\*|_)\2(?=\S)([^\r]*?\S)\2\2(?!\2)(?=[\W_]|$)/g,
"$1<strong>$3</strong>");
// This is almost identical to the <strong> regex, except 1) there's obviously just one marker
// character, and 2) the italicized string cannot contain the marker character.
text = text.replace(/(^|[\W_])(?:(?!\1)|(?=^))(\*|_)(?=\S)((?:(?!\2)[^\r])*?\S)\2(?!\2)(?=[\W_]|$)/g,
"$1<em>$3</em>");
return deasciify(text);
}
function _DoItalicsAndBold_AllowIntrawordWithAsterisk(text) {
if (text.indexOf("*") === -1 && text.indexOf("_") === - 1)
return text;
text = asciify(text);
// <strong> must go first:
// (?=[^\r][*_]|[*_]) Optimization only, to find potentially relevant text portions faster. Minimally slower in Chrome, but much faster in IE.
// ( Store in \1. This is the last character before the delimiter
// ^ Either we're at the start of the string (i.e. there is no last character)...
// | ... or we allow one of the following:
// (?= (lookahead; we're not capturing this, just listing legal possibilities)
// \W__ If the delimiter is __, then this last character must be non-word non-underscore (extra-word emphasis only)
// |
// (?!\*)[\W_]\*\* If the delimiter is **, then this last character can be non-word non-asterisk (extra-word emphasis)...
// |
// \w\*\*\w ...or it can be word/underscore, but only if the first bolded character is such a character as well (intra-word emphasis)
// )
// [^\r] actually capture the character (can't use `.` since it could be \n)
// )
// (\*\*|__) Store in \2: the actual delimiter
// (?!\2) not followed by the delimiter again (at most one more asterisk/underscore is allowed)
// (?=\S) the first bolded character can't be a space
// ( Store in \3: the bolded string
//
// (?:| Look at all bolded characters except for the last one. Either that's empty, meaning only a single character was bolded...
// [^\r]*? ... otherwise take arbitrary characters, minimally matching; that's all bolded characters except for the last *two*
// (?!\2) the last two characters cannot be the delimiter itself (because that would mean four underscores/asterisks in a row)
// [^\r] capture the next-to-last bolded character
// )
// (?= lookahead at the very last bolded char and what comes after
// \S_ for underscore-bolding, it can be any non-space
// |
// \w for asterisk-bolding (otherwise the previous alternative would've matched, since \w implies \S), either the last char is word/underscore...
// |
// \S\*\*(?:[\W_]|$) ... or it's any other non-space, but in that case the character *after* the delimiter may not be a word character
// )
// . actually capture the last character (can use `.` this time because the lookahead ensures \S in all cases)
// )
// (?= lookahead; list the legal possibilities for the closing delimiter and its following character
// __(?:\W|$) for underscore-bolding, the following character (if any) must be non-word non-underscore
// |
// \*\*(?:[^*]|$) for asterisk-bolding, any non-asterisk is allowed (note we already ensured above that it's not a word character if the last bolded character wasn't one)
// )
// \2 actually capture the closing delimiter (and make sure that it matches the opening one)
text = text.replace(/(?=[^\r][*_]|[*_])(^|(?=\W__|(?!\*)[\W_]\*\*|\w\*\*\w)[^\r])(\*\*|__)(?!\2)(?=\S)((?:|[^\r]*?(?!\2)[^\r])(?=\S_|\w|\S\*\*(?:[\W_]|$)).)(?=__(?:\W|$)|\*\*(?:[^*]|$))\2/g,
"$1<strong>$3</strong>");
// now <em>:
// (?=[^\r][*_]|[*_]) Optimization, see above.
// ( Store in \1. This is the last character before the delimiter
// ^ Either we're at the start of the string (i.e. there is no last character)...
// | ... or we allow one of the following:
// (?= (lookahead; we're not capturing this, just listing legal possibilities)
// \W_ If the delimiter is _, then this last character must be non-word non-underscore (extra-word emphasis only)
// |
// (?!\*) otherwise, we list two possiblities for * as the delimiter; in either case, the last characters cannot be an asterisk itself
// (?:
// [\W_]\* this last character can be non-word (extra-word emphasis)...
// |
// \D\*(?=\w)\D ...or it can be word (otherwise the first alternative would've matched), but only if
// a) the first italicized character is such a character as well (intra-word emphasis), and
// b) neither character on either side of the asterisk is a digit
// )
// )
// [^\r] actually capture the character (can't use `.` since it could be \n)
// )
// (\*|_) Store in \2: the actual delimiter
// (?!\2\2\2) not followed by more than two more instances of the delimiter
// (?=\S) the first italicized character can't be a space
// ( Store in \3: the italicized string
// (?:(?!\2)[^\r])*? arbitrary characters except for the delimiter itself, minimally matching
// (?= lookahead at the very last italicized char and what comes after
// [^\s_]_ for underscore-italicizing, it can be any non-space non-underscore
// |
// (?=\w)\D\*\D for asterisk-italicizing, either the last char is word/underscore *and* neither character on either side of the asterisk is a digit...
// |
// [^\s*]\*(?:[\W_]|$) ... or that last char is any other non-space non-asterisk, but then the character after the delimiter (if any) must be non-word
// )
// . actually capture the last character (can use `.` this time because the lookahead ensures \S in all cases)
// )
// (?= lookahead; list the legal possibilities for the closing delimiter and its following character
// _(?:\W|$) for underscore-italicizing, the following character (if any) must be non-word non-underscore
// |
// \*(?:[^*]|$) for asterisk-italicizing, any non-asterisk is allowed; all other restrictions have already been ensured in the previous lookahead
// )
// \2 actually capture the closing delimiter (and make sure that it matches the opening one)
text = text.replace(/(?=[^\r][*_]|[*_])(^|(?=\W_|(?!\*)(?:[\W_]\*|\D\*(?=\w)\D))[^\r])(\*|_)(?!\2\2\2)(?=\S)((?:(?!\2)[^\r])*?(?=[^\s_]_|(?=\w)\D\*\D|[^\s*]\*(?:[\W_]|$)).)(?=_(?:\W|$)|\*(?:[^*]|$))\2/g,
"$1<em>$3</em>");
return deasciify(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\/?!]|~D)/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;
}
var charInsideUrl = "[-A-Z0-9+&@#/%?=~_|[\\]()!:,.;]",
charEndingUrl = "[-A-Z0-9+&@#/%=~_|[\\])]",
autoLinkRegex = new RegExp("(=\"|<)?\\b(https?|ftp)(://" + charInsideUrl + "*" + charEndingUrl + ")(?=$|\\W)", "gi"),
endCharRegex = new RegExp(charEndingUrl, "i");
function handleTrailingParens(wholeMatch, lookbehind, protocol, link) {
if (lookbehind)
return wholeMatch;
if (link.charAt(link.length - 1) !== ")")
return "<" + protocol + link + ">";
var parens = link.match(/[()]/g);
var level = 0;
for (var i = 0; i < parens.length; i++) {
if (parens[i] === "(") {
if (level <= 0)
level = 1;
else
level++;
}
else {
level--;
}
}
var tail = "";
if (level < 0) {
var re = new RegExp("\\){1," + (-level) + "}$");
link = link.replace(re, function (trailingParens) {
tail = trailingParens;
return "";
});
}
if (tail) {
var lastChar = link.charAt(link.length - 1);
if (!endCharRegex.test(lastChar)) {
tail = lastChar + tail;
link = link.substr(0, link.length - 1);
}
}
return "<" + protocol + link + ">" + tail;
}
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 a non-word character (and not by =" or <) and followed by non-word/EOF character
// simulating the lookbehind in a consuming way is okay here, since a URL can neither and with a " nor
// with a <, so there is no risk of overlapping matches.
text = text.replace(autoLinkRegex, handleTrailingParens);
// autolink anything like <http://example.com>
var replacer = function (wholematch, m1) {
var url = attributeSafeUrl(m1);
return "<a href=\"" + url + "\">" + 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
//
function attributeSafeUrl(url) {
url = attributeEncode(url);
url = escapeCharacters(url, "*_:()[]")
return url;
}
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
})();
(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())
};
var defaultsStrings = {
bold: "Strong <strong> Ctrl+B",
boldexample: "strong text",
italic: "Emphasis <em> Ctrl+I",
italicexample: "emphasized text",
link: "Hyperlink <a> Ctrl+L",
linkdescription: "enter link description here",
linkdialog: "<p><b>Insert Hyperlink</b></p><p>http://example.com/ \"optional title\"</p>",
linkname: null,
quote: "Blockquote <blockquote> Ctrl+Q",
quoteexample: "Blockquote",
code: "Code Sample <pre><code> Ctrl+K",
codeexample: "enter code here",
image: "Image <img> Ctrl+G",
imagedescription: "enter image description here",
imagedialog: "<p><b>Insert Image</b></p><p>http://example.com/images/diagram.jpg \"optional title\"<br>Need <a href='http://www.google.com/search?q=free+image+hosting' target='_blank'>free image hosting?</a></p>",
imagename: null,
olist: "Numbered List <ol> Ctrl+O",
ulist: "Bulleted List <ul> Ctrl+U",
litem: "List item",
heading: "Heading <h1>/<h2> Ctrl+H",
headingexample: "Heading",
more: "More contents <!--more--> Ctrl+M",
fullscreen: 'FullScreen Ctrl+J',
exitFullscreen: 'Exit FullScreen Ctrl+E',
fullscreenUnsupport: 'Sorry, the browser dont support fullscreen api',
hr: "Horizontal Rule <hr> Ctrl+R",
undo: "Undo - Ctrl+Z",
redo: "Redo - Ctrl+Y",
redomac: "Redo - Ctrl+Shift+Z",
ok: "OK",
cancel: "Cancel",
help: "Markdown Editing Help"
};
// -------------------------------------------------------------------
// YOUR CHANGES GO HERE
//
// I've tried to localize the things you are likely to change to
// this area.
// -------------------------------------------------------------------
// The default text that appears in the dialog input box when entering
// links.
var imageDefaultText = "http://";
var linkDefaultText = "http://";
// -------------------------------------------------------------------
// END OF YOUR CHANGES
// -------------------------------------------------------------------
// options, if given, can have the following properties:
// options.helpButton = { handler: yourEventHandler }
// options.strings = { italicexample: "slanted text" }
// `yourEventHandler` is the click handler for the help button.
// If `options.helpButton` isn't given, not help button is created.
// `options.strings` can have any or all of the same properties as
// `defaultStrings` above, so you can just override some string displayed
// to the user on a case-by-case basis, or translate all strings to
// a different language.
//
// For backwards compatibility reasons, the `options` argument can also
// be just the `helpButton` object, and `strings.help` can also be set via
// `helpButton.title`. This should be considered legacy.
//
// 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, options) {
options = options || {};
if (typeof options.handler === "function") { //backwards compatible behavior
options = { helpButton: options };
}
options.strings = options.strings || {};
if (options.helpButton) {
options.strings.help = options.strings.help || options.helpButton.title;
}
var getString = function (identifier) {
var string = options.strings[identifier] || defaultsStrings[identifier];
if ('imagename' == identifier || 'linkname' == identifier) {
options.strings[identifier] = null;
}
return string;
}
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.
*/
hooks.addFalse("insertLinkDialog"); /* 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.
*/
hooks.addNoop("makeButton");
hooks.addNoop("enterFullScreen");
hooks.addNoop("enterFakeFullScreen");
hooks.addNoop("exitFullScreen");
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, getString);
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();
}
}
fullScreenManager = new FullScreenManager(hooks, getString);
uiManager = new UIManager(idPostfix, panels, hooks, undoManager, previewManager, commandManager, fullScreenManager, options.helpButton, getString);
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.stackexchange.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("text");
};
// 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) && !event.altKey) {
// IE and Opera do not support charCode.
var keyCode = event.charCode || event.keyCode;
var keyCodeChar = String.fromCharCode(keyCode);
switch (keyCodeChar.toLowerCase()) {
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.altKey && (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;
};
// 扩展了原来ui的功能
// 允许创建一个自定义html的对话框
ui.dialog = function (html, callback, ok, cancel) {
// These variables need to be declared at this level since they are used
// in multiple functions.
var dialog; // The dialog box.
// 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);
dialog.parentNode.removeChild(dialog);
callback(isCancel);
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.setAttribute("role", "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");
// 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);
form.appendChild(question);
if ('function' == typeof(html)) {
html.call(this, question);
} else {
question.innerHTML = html;
}
// The ok button
var okButton = doc.createElement("button");
okButton.type = "button";
okButton.className = "btn btn-s primary";
okButton.onclick = function () { return close(false); };
okButton.innerHTML = ok;
/*
style = okButton.style;
style.margin = "10px";
style.display = "inline";
style.width = "7em";
*/
// The cancel button
var cancelButton = doc.createElement("button");
cancelButton.type = "button";
cancelButton.className = "btn btn-s";
cancelButton.onclick = function () { return close(true); };
cancelButton.innerHTML = 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();
}, 0);
}
// 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, ok, cancel) {
// 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://');
// fix issue #552
if (!/^(?:https?|ftp):\/\//.test(text) && !/^[_a-z0-9-]+:/i.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.setAttribute("role", "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("button");
okButton.type = "button";
okButton.className = "btn btn-s primary";
okButton.onclick = function () { return close(false); };
okButton.innerHTML = ok;
/*
style = okButton.style;
style.margin = "10px";
style.display = "inline";
style.width = "7em";
*/
// The cancel button
var cancelButton = doc.createElement("button");
cancelButton.type = "button";
cancelButton.className = "btn btn-s";
cancelButton.onclick = function () { return close(true); };
cancelButton.innerHTML = 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, hooks, undoManager, previewManager, commandManager, fullScreenManager, helpOptions, getString) {
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 'm':
doClick(buttons.more);
break;
case 'j':
doClick(buttons.fullscreen);
break;
case 'e':
doClick(buttons.exitFullscreen);
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;
}
}else if(key.keyCode==9 && window.fullScreenEntered){
var tab = {};
tab.textOp = bindCommand("doTab");
doClick(tab);
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", getString("bold"), "0px", bindCommand("doBold"));
buttons.italic = makeButton("wmd-italic-button", getString("italic"), "-20px", bindCommand("doItalic"));
makeSpacer(1);
buttons.link = makeButton("wmd-link-button", getString("link"), "-40px", bindCommand(function (chunk, postProcessing) {
return this.doLinkOrImage(chunk, postProcessing, false);
}));
buttons.quote = makeButton("wmd-quote-button", getString("quote"), "-60px", bindCommand("doBlockquote"));
buttons.code = makeButton("wmd-code-button", getString("code"), "-80px", bindCommand("doCode"));
buttons.image = makeButton("wmd-image-button", getString("image"), "-100px", bindCommand(function (chunk, postProcessing) {
return this.doLinkOrImage(chunk, postProcessing, true);
}));
makeSpacer(2);
buttons.olist = makeButton("wmd-olist-button", getString("olist"), "-120px", bindCommand(function (chunk, postProcessing) {
this.doList(chunk, postProcessing, true);
}));
buttons.ulist = makeButton("wmd-ulist-button", getString("ulist"), "-140px", bindCommand(function (chunk, postProcessing) {
this.doList(chunk, postProcessing, false);
}));
buttons.heading = makeButton("wmd-heading-button", getString("heading"), "-160px", bindCommand("doHeading"));
buttons.hr = makeButton("wmd-hr-button", getString("hr"), "-180px", bindCommand("doHorizontalRule"));
buttons.more = makeButton("wmd-more-button", getString("more"), "-280px", bindCommand("doMore"));
makeSpacer(3);
buttons.undo = makeButton("wmd-undo-button", getString("undo"), "-200px", null);
buttons.undo.execute = function (manager) { if (manager) manager.undo(); };
var redoTitle = /win/.test(nav.platform.toLowerCase()) ?
getString("redo") :
getString("redomac"); // mac and other non-Windows platforms
buttons.redo = makeButton("wmd-redo-button", redoTitle, "-220px", null);
buttons.redo.execute = function (manager) { if (manager) manager.redo(); };
makeSpacer(4);
buttons.fullscreen = makeButton("wmd-fullscreen-button", getString("fullscreen"), "-240px", null);
buttons.fullscreen.execute = function () { fullScreenManager.doFullScreen(buttons, true); };
buttons.exitFullscreen = makeButton("wmd-exit-fullscreen-button", getString("exitFullscreen"), "-260px", null);
buttons.exitFullscreen.style.display = 'none';
buttons.exitFullscreen.execute = function () { fullScreenManager.doFullScreen(buttons, false); };
// button hooks
hooks.makeButton(buttons, makeButton, bindCommand, ui);
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 = "-300px";
helpButton.isHelp = true;
helpButton.style.right = "0px";
helpButton.title = getString("help");
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, getString) {
this.hooks = pluginHooks;
this.getString = getString;
}
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+$/, "");
};
commandProto.doBold = function (chunk, postProcessing) {
return this.doBorI(chunk, postProcessing, 2, this.getString("boldexample"));
};
commandProto.doItalic = function (chunk, postProcessing) {
return this.doBorI(chunk, postProcessing, 1, this.getString("italicexample"));
};
// chunk: The selected region that will be enclosed with */**
// nStars: 1 for italics, 2 for bold
// insertText: If you just click the button without highlighting text, this gets inserted
commandProto.doBorI = function (chunk, postProcessing, nStars, insertText) {
// Get rid of whitespace and fixup newlines.
chunk.trimWhitespace();
chunk.selection = chunk.selection.replace(/\n{2,}/g, "\n");
// Look for stars before and after. Is the chunk already marked up?
// note that these regex matches cannot fail
var starsBefore = /(\**$)/.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) {
var inQueryString = false;
// Having `[^\w\d-./]` in there is just a shortcut that lets us skip
// the most common characters in URLs. Replacing that it with `.` would not change
// the result, because encodeURI returns those characters unchanged, but it
// would mean lots of unnecessary replacement calls. Having `[` and `]` in that
// section as well means we do *not* enocde square brackets. These characters are
// a strange beast in URLs, but if anything, this causes URLs to be more readable,
// and we leave it to the browser to make sure that these links are handled without
// problems.
link = link.replace(/%(?:[\da-fA-F]{2})|\?|\+|[^\w\d-./[\]]/g, function (match) {
// Valid percent encoding. Could just return it as is, but we follow RFC3986
// Section 2.1 which says "For consistency, URI producers and normalizers
// should use uppercase hexadecimal digits for all percent-encodings."
// Note that we also handle (illegal) stand-alone percent characters by
// replacing them with "%25"
if (match.length === 3 && match.charAt(0) == "%") {
return match.toUpperCase();
}
switch (match) {
case "?":
inQueryString = true;
return "?";
break;
// In the query string, a plus and a space are identical -- normalize.
// Not strictly necessary, but identical behavior to the previous version
// of this function.
case "+":
if (inQueryString)
return "%20";
break;
}
return encodeURI(match);
})
if (title) {
title = title.trim ? title.trim() : title.replace(/^\s*/, "").replace(/\s*$/, "");
title = 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, "$1\\").substr(1);
var linkDef = " [999]: " + properlyEncoded(link);
var num = that.addLinkDef(chunk, linkDef);
chunk.startTag = isImage ? "![" : "[";
chunk.endTag = "][" + num + "]";
if (!chunk.selection) {
if (isImage) {
var imagename = that.getString("imagename");
chunk.selection = imagename || that.getString("imagedescription");
}
else {
var linkname = that.getString("linkname");
chunk.selection = linkname || that.getString("linkdescription");
}
}
}
postProcessing();
};
background = ui.createBackground();
if (isImage) {
if (!this.hooks.insertImageDialog(linkEnteredCallback))
ui.prompt(this.getString("imagedialog"), imageDefaultText, linkEnteredCallback, this.getString("ok"), this.getString("cancel"));
}
else {
if (!this.hooks.insertLinkDialog(linkEnteredCallback))
ui.prompt(this.getString("linkdialog"), linkDefaultText, linkEnteredCallback, this.getString("ok"), this.getString("cancel"));
}
return true;
}
};
// When making a list, hitting shift-enter will put your cursor on the next line
// at the current indent level.
commandProto.doAutoindent = function (chunk, postProcessing) {
var commandMgr = this,
fakeSelection = false;
chunk.before = chunk.before.replace(/(\n|^)[ ]{0,3}([*+-]|\d+[.])[ \t]*\n$/, "\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|>)+$/, "");
chunk.selection = chunk.selection || this.getString("quoteexample");
// The original code uses a regular expression to find out how much of the
// text *directly before* the selection already was a blockquote:
/*
if (chunk.before) {
chunk.before = chunk.before.replace(/\n?$/, "\n");
}
chunk.before = chunk.before.replace(/(((\n|^)(\n[ \t]*)*>(.+\n)*.*)+(\n[ \t]*)*$)/,
function (totalMatch) {
chunk.startTag = totalMatch;
return "";
});
*/
// This comes down to:
// Go backwards as many lines a possible, such that each line
// a) starts with ">", or
// b) is almost empty, except for whitespace, or
// c) is preceeded by an unbroken chain of non-empty lines
// leading up to a line that starts with ">" and at least one more character
// and in addition
// d) at least one line fulfills a)
//
// Since this is essentially a backwards-moving regex, it's susceptible to
// catstrophic backtracking and can cause the browser to hang;
// see e.g. http://meta.stackexchange.com/questions/9807.
//
// Hence we replaced this by a simple state machine that just goes through the
// lines and checks for a), b), and c).
var match = "",
leftOver = "",
line;
if (chunk.before) {
var lines = chunk.before.replace(/\n$/, "").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$/.test(chunk.before)) {
nLinesBack = 0;
}
if (/^\n(\t|[ ]{4,})/.test(chunk.after)) {
nLinesForward = 0;
}
chunk.skipLines(nLinesBack, nLinesForward);
if (!chunk.selection) {
chunk.startTag = " ";
chunk.selection = this.getString("codeexample");
}
else {
if (/^[ ]{0,3}\S/m.test(chunk.selection)) {
if (/\n/.test(chunk.selection))
chunk.selection = chunk.selection.replace(/^/gm, " ");
else // if it's not multiline, do not select the four added spaces; this is more consistent with the doList behavior
chunk.before += " ";
}
else {
chunk.selection = chunk.selection.replace(/^(?:[ ]{4}|[ ]{0,3}\t)/gm, "");
}
}
}
else {
// Use backticks (`) to delimit the code block.
chunk.trimWhitespace();
chunk.findTags(/`/, /`/);
if (!chunk.startTag && !chunk.endTag) {
chunk.startTag = chunk.endTag = "`";
if (!chunk.selection) {
chunk.selection = this.getString("codeexample");
}
}
else if (chunk.endTag && !chunk.startTag) {
chunk.before += chunk.endTag;
chunk.endTag = "";
}
else {
chunk.startTag = chunk.endTag = "";
}
}
};
commandProto.doList = function (chunk, postProcessing, isNumberedList) {
// These are identical except at the very beginning and end.
// Should probably use the regex extension function to make this clearer.
var previousItemsRegex = /(\n|^)(([ ]{0,3}([*+-]|\d+[.])[ \t]+.*)(\n.+|\n{2,}([*+-].*|\d+[.])[ \t]+.*|\n{2,}[ \t]+\S.*)*)\n*$/;
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.$1;
}
nLinesUp = /[^\n]\n\n[^\n]/.test(itemText) ? 1 : 0;
return getPrefixedItem(itemText);
});
if (!chunk.selection) {
chunk.selection = this.getString("litem");
}
var prefix = getItemPrefix();
var nLinesDown = 1;
chunk.after = chunk.after.replace(nextItemsRegex,
function (itemText) {
nLinesDown = /[^\n]\n\n[^\n]/.test(itemText) ? 1 : 0;
return getPrefixedItem(itemText);
});
chunk.trimWhitespace(true);
chunk.skipLines(nLinesUp, nLinesDown, true);
chunk.startTag = prefix;
var spaces = prefix.replace(/./g, " ");
this.wrap(chunk, SETTINGS.lineLength - spaces.length);
chunk.selection = chunk.selection.replace(/\n/g, "\n" + spaces);
};
commandProto.doHeading = function (chunk, postProcessing) {
// Remove leading/trailing whitespace and reduce internal spaces to single spaces.
chunk.selection = chunk.selection.replace(/\s+/g, " ");
chunk.selection = chunk.selection.replace(/(^\s+|\s+$)/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 = this.getString("headingexample");
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);
}
commandProto.doMore = function (chunk, postProcessing) {
chunk.startTag = "<!--more-->\n\n";
chunk.selection = "";
chunk.skipLines(2, 0, true);
}
commandProto.doTab = function (chunk, postProcessing) {
chunk.startTag = " ";
chunk.selection = "";
}
function FullScreenManager (hooks, getString) {
this.fullScreenBind = false;
this.hooks = hooks;
this.getString = getString;
this.isFakeFullScreen = false;
}
function getFullScreenAdapter () {
var selector = {
fullScreenChange : ['onfullscreenchange', 'onwebkitfullscreenchange', 'onmozfullscreenchange', 'onmsfullscreenchange'],
requestFullscreen : ['requestFullscreen', 'webkitRequestFullScreen', 'mozRequestFullScreen', 'msRequestFullScreen'],
cancelFullscreen : ['cancelFullscreen', 'exitFullScreen', 'webkitCancelFullScreen', 'mozCancelFullScreen', 'msCancelFullScreen']
}, adapter = {};
for (var name in selector) {
var len = selector[name].length, found = false;
for (var i = 0; i < len; i ++) {
var method = selector[name][i];
if ('undefined' != typeof(document[method]) || 'undefined' != typeof(document.body[method])) {
adapter[name] = method;
found = true;
break;
}
}
if (!found) {
return false;
}
}
return adapter;
};
function isFullScreen () {
return document.fullScreen ||
document.mozFullScreen ||
document.webkitIsFullScreen ||
document.msIsFullScreen;
};
// fullscreen
FullScreenManager.prototype.doFullScreen = function (buttons, enter) {
var adapter = getFullScreenAdapter(), self = this;
if (!adapter) {
alert(self.getString('fullscreenUnsupport'));
return false;
}
if (!this.fullScreenBind) {
util.addEvent(document, adapter.fullScreenChange.substring(2), function () {
if (!isFullScreen()) {
buttons.fullscreen.style.display = '';
buttons.exitFullscreen.style.display = 'none';
self.hooks.exitFullScreen();
} else {
buttons.fullscreen.style.display = 'none';
buttons.exitFullscreen.style.display = '';
self.hooks.enterFullScreen();
}
});
this.fullScreenBind = true;
}
if (enter) {
if (self.isFakeFullScreen) {
document.body[adapter.requestFullscreen]('webkitRequestFullScreen' == adapter.requestFullscreen
? Element.ALLOW_KEYBOARD_INPUT : null);
self.isFakeFullScreen = false;
} else if (!isFullScreen()) {
buttons.exitFullscreen.style.display = '';
self.hooks.enterFakeFullScreen();
self.isFakeFullScreen = true;
}
window.fullScreenEntered = true;
} else {
if (self.isFakeFullScreen) {
buttons.exitFullscreen.style.display = 'none';
self.hooks.exitFullScreen();
} else if (isFullScreen()) {
document[adapter.cancelFullscreen]();
}
self.isFakeFullScreen = false;
window.fullScreenEntered = false;
}
};
})();
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