MediaWiki:LAPI.js
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// <syntaxhighlight lang=javascript">
/*
Small JS library containing stuff I use often.
Author: [[User:Lupo]], June 2009
License: Quadruple licensed GFDL, GPL, LGPL and Creative Commons Attribution 3.0 (CC-BY-3.0)
Choose whichever license of these you like best :-)
Includes the following components:
- Object enhancements (clone, merge)
- String enhancements (trim, ...)
- Array enhancements (JS 1.6)
- Function enhancements (bind)
- LAPI Most basic DOM functions: $ (getElementById), make
- LAPI.Ajax Ajax request implementation, tailored for MediaWiki/WMF sites
- LAPI.Browser Browser detection (general)
- LAPI.DOM DOM helpers, including a cross-browser DOM parser
- LAPI.WP MediaWiki/WMF-specific DOM routines
- LAPI.Edit Simple editor implementation with save, cancel, preview (for WMF sites)
- LAPI.Evt Event handler routines (general)
- LAPI.Pos Position calculations (general)
*/
// Global: importScript (from wiki.js, for MediaWiki:AjaxSubmit.js)
// Configuration: set this to the URL of your image server. The value is a string representation
// of a regular expression. For instance, for Wikia, use "http://images\\d\\.wikia\\.nocookie\\.net".
// Remember to double-escape the backslash.
if (typeof (LAPI_file_store) == 'undefined')
var LAPI_file_store = "(https?:)?//upload\\.wikimedia\\.org/";
// Some basic routines, mainly enhancements of the String, Array, and Function objects.
// Some taken from Javascript 1.6, some own.
/** Object enhancements ************/
// Note: adding these to the prototype may break other code that assumes that
// {} has no properties at all.
Object.clone = function (source, includeInherited)
{
if (!source) return null;
var result = {};
for (var key in source) {
if (includeInherited || source.hasOwnProperty (key)) result[key] = source[key];
}
return result;
};
Object.merge = function (from, into, includeInherited)
{
if (!from) return into;
for (var key in from) {
if (includeInherited || from.hasOwnProperty (key)) into[key] = from[key];
}
return into;
};
Object.mergeSome = function (from, into, includeInherited, predicate)
{
if (!from) return into;
if (typeof (predicate) == 'undefined')
return Object.merge (from, into, includeInherited);
for (var key in from) {
if ((includeInherited || from.hasOwnProperty (key)) && predicate (from, into, key))
into[key] = from[key];
}
return into;
};
Object.mergeSet = function (from, into, includeInherited)
{
return Object.mergeSome
(from, into, includeInherited, function (src, tgt, key) {return src[key] != null;});
}
/** String enhancements (Javascript 1.6) ************/
// Removes given characters from both ends of the string.
// If no characters are given, defaults to removing whitespace.
if (!String.prototype.trim) {
String.prototype.trim = function (chars) {
if (!chars) return this.replace (/^\s+|\s+$/g, "");
return this.trimRight (chars).trimLeft (chars);
};
}
// Removes given characters from the beginning of the string.
// If no characters are given, defaults to removing whitespace.
if (!String.prototype.trimLeft) {
String.prototype.trimLeft = function (chars) {
if (!chars) return this.replace (/^\s\s*/, "");
return this.replace (new RegExp ('^[' + chars.escapeRE () + ']+'), "");
};
}
String.prototype.trimFront = String.prototype.trimLeft; // Synonym
// Removes given characters from the end of the string.
// If no characters are given, defaults to removing whitespace.
if (!String.prototype.trimRight) {
String.prototype.trimRight = function (chars) {
if (!chars) return this.replace (/\s\s*$/, "");
return this.replace (new RegExp ('[' + chars.escapeRE () + ']+$'), "");
};
}
String.prototype.trimEnd = String.prototype.trimRight; // Synonym
/** Further String enhancements ************/
// Returns true if the string begins with prefix.
String.prototype.startsWith = function (prefix) {
return this.indexOf (prefix) == 0;
};
// Returns true if the string ends in suffix
String.prototype.endsWith = function (suffix) {
return this.lastIndexOf (suffix) + suffix.length == this.length;
};
// Returns true if the string contains s.
String.prototype.contains = function (s) {
return this.indexOf (s) >= 0;
};
// Replace all occurrences of a string pattern by replacement.
String.prototype.replaceAll = function (pattern, replacement) {
return this.split (pattern).join (replacement);
};
// Escape all backslashes and single or double quotes such that the result can
// be used in Javascript inside quotes or double quotes.
String.prototype.stringifyJS = function () {
return this.replace (/([\\\'\"]|%5C|%27|%22)/g, '\\$1') // ' // Fix syntax coloring
.replace (/\n/g, '\\n');
}
// Escape all RegExp special characters such that the result can be safely used
// in a RegExp as a literal.
String.prototype.escapeRE = function () {
return this.replace (/([\\{}()|.?*+^$\[\]])/g, "\\$1");
};
String.prototype.escapeXML = function (quot, apos) {
var s = this.replace (/&/g, '&')
.replace (/\xa0/g, ' ')
.replace (/</g, '<')
.replace (/>/g, '>');
if (quot) s = s.replace (/\"/g, '"'); // " // Fix syntax coloring
if (apos) s = s.replace (/\'/g, '''); // ' // Fix syntax coloring
return s;
};
String.prototype.decodeXML = function () {
return this.replace(/"/g, '"')
.replace(/'/g, "'")
.replace(/>/g, '>')
.replace(/</g, '<')
.replace(/ /g, '\xa0')
.replace(/&/g, '&');
};
String.prototype.capitalizeFirst = function () {
return this.substring (0, 1).toUpperCase() + this.substring (1);
};
String.prototype.lowercaseFirst = function () {
return this.substring (0, 1).toLowerCase() + this.substring (1);
};
// This is actually a function on URLs, but since URLs typically are strings in
// Javascript, let's include this one here, too.
String.prototype.getParamValue = function (param) {
var re = new RegExp ('[&?]' + param.escapeRE () + '=([^&#]*)');
var m = re.exec (this);
if (m && m.length >= 2) return decodeURIComponent (m[1]);
return null;
};
String.getParamValue = function (param, url)
{
if (typeof (url) == 'undefined' || url === null) url = document.location.href;
try {
return url.getParamValue (param);
} catch (e) {
return null;
}
};
/** Function enhancements ************/
if (!Function.prototype.bind) {
// Return a function that calls the function with 'this' bound to 'thisObject'
Function.prototype.bind = function (thisObject) {
var f = this, obj = thisObject, slice = Array.prototype.slice, prefixedArgs = slice.call (arguments, 1);
return function () { return f.apply (obj, prefixedArgs.concat (slice.call (arguments))); };
};
}
/** Array enhancements (Javascript 1.6) ************/
// Note that contrary to JS 1.6, we treat the thisObject as optional.
// Don't add to the prototype, that would break for (var key in array) loops!
// Returns a new array containing only those elements for which predicate
// is true.
if (!Array.filter) {
Array.filter = function (target, predicate, thisObject)
{
if (target === null) return null;
if (typeof (target.filter) == 'function') return target.filter (predicate, thisObject);
if (typeof (predicate) != 'function')
throw new Error ('Array.filter: predicate must be a function');
var l = target.length;
var result = [];
if (thisObject) predicate = predicate.bind (thisObject);
for (var i=0; l && i < l; i++) {
if (i in target) {
var curr = target[i];
if (predicate (curr, i, target)) result[result.length] = curr;
}
}
return result;
};
}
Array.select = Array.filter; // Synonym
// Calls iterator on all elements of the array
if (!Array.forEach) {
Array.forEach = function (target, iterator, thisObject)
{
if (target === null) return;
if (typeof (target.forEach) == 'function') {
target.forEach (iterator, thisObject);
return;
}
if (typeof (iterator) != 'function')
throw new Error ('Array.forEach: iterator must be a function');
var l = target.length;
if (thisObject) iterator = iterator.bind (thisObject);
for (var i=0; l && i < l; i++) {
if (i in target) iterator (target[i], i, target);
}
};
}
// Returns true if predicate is true for every element of the array, false otherwise
if (!Array.every) {
Array.every = function (target, predicate, thisObject)
{
if (target === null) return true;
if (typeof (target.every) == 'function') return target.every (predicate, thisObject);
if (typeof (predicate) != 'function')
throw new Error ('Array.every: predicate must be a function');
var l = target.length;
if (thisObject) predicate = predicate.bind (thisObject);
for (var i=0; l && i < l; i++) {
if (i in target && !predicate (target[i], i, target)) return false;
}
return true;
};
}
Array.forAll = Array.every; // Synonym
// Returns true if predicate is true for at least one element of the array, false otherwise.
if (!Array.some) {
Array.some = function (target, predicate, thisObject)
{
if (target === null) return false;
if (typeof (target.some) == 'function') return target.some (predicate, thisObject);
if (typeof (predicate) != 'function')
throw new Error ('Array.some: predicate must be a function');
var l = target.length;
if (thisObject) predicate = predicate.bind (thisObject);
for (var i=0; l && i < l; i++) {
if (i in target && predicate (target[i], i, target)) return true;
}
return false;
};
}
Array.exists = Array.some; // Synonym
// Returns a new array built by applying mapper to all elements.
if (!Array.map) {
Array.map = function (target, mapper, thisObject)
{
if (target === null) return null;
if (typeof (target.map) == 'function') return target.map (mapper, thisObject);
if (typeof (mapper) != 'function')
throw new Error ('Array.map: mapper must be a function');
var l = target.length;
var result = [];
if (thisObject) mapper = mapper.bind (thisObject);
for (var i=0; l && i < l; i++) {
if (i in target) result[i] = mapper (target[i], i, target);
}
return result;
};
}
if (!Array.indexOf) {
Array.indexOf = function (target, elem, from)
{
if (target === null) return -1;
if (typeof (target.indexOf) == 'function') return target.indexOf (elem, from);
if (typeof (target.length) == 'undefined') return -1;
var l = target.length;
if (isNaN (from)) from = 0; else from = from || 0;
from = (from < 0) ? Math.ceil (from) : Math.floor (from);
if (from < 0) from += l;
if (from < 0) from = 0;
while (from < l) {
if (from in target && target[from] === elem) return from;
from += 1;
}
return -1;
};
}
if (!Array.lastIndexOf) {
Array.lastIndexOf = function (target, elem, from)
{
if (target === null) return -1;
if (typeof (target.lastIndexOf) == 'function') return target.lastIndexOf (elem, from);
if (typeof (target.length) == 'undefined') return -1;
var l = target.length;
if (isNaN (from)) from = l-1; else from = from || (l-1);
from = (from < 0) ? Math.ceil (from) : Math.floor (from);
if (from < 0) from += l; else if (from >= l) from = l-1;
while (from >= 0) {
if (from in target && target[from] === elem) return from;
from -= 1;
}
return -1;
};
}
/** Additional Array enhancements ************/
Array.remove = function (target, elem) {
var i = Array.indexOf (target, elem);
if (i >= 0) target.splice (i, 1);
};
Array.contains = function (target, elem) {
return Array.indexOf (target, elem) >= 0;
};
Array.flatten = function (target) {
var result = [];
Array.forEach (target, function (elem) {result = result.concat (elem);});
return result;
};
// Calls selector on the array elements until it returns a non-null object
// and then returns that object. If selector always returns null, any also
// returns null. See also Array.map.
Array.any = function (target, selector, thisObject)
{
if (target === null) return null;
if (typeof (selector) != 'function')
throw new Error ('Array.any: selector must be a function');
var l = target.length;
var result = null;
if (thisObject) selector = selector.bind (thisObject);
for (var i=0; l && i < l; i++) {
if (i in target) {
result = selector (target[i], i, target);
if (result != null) return result;
}
}
return null;
};
// Return a contiguous array of the contents of source, which may be an array or pseudo-array,
// basically anything that has a length and can be indexed. (E.g. live HTMLCollections, but also
// Strings, or objects, or the arguments "variable".
Array.make = function (source)
{
if (!source || typeof (source.length) == 'undefined') return null;
var result = [];
var l = source.length;
for (var i=0; i < l; i++) {
if (i in source) result[result.length] = source[i];
}
return result;
};
if (typeof (window.LAPI) == 'undefined') {
window.LAPI = {
Ajax :
{
getRequest : function ()
{
var request = null;
try {
request = new XMLHttpRequest();
} catch (anything) {
request = null;
if (!!window.ActiveXObject) {
if (typeof (LAPI.Ajax.getRequest.msXMLHttpID) == 'undefined') {
var XHR_ids = [ 'MSXML2.XMLHTTP.6.0', 'MSXML2.XMLHTTP.3.0'
, 'MSXML2.XMLHTTP', 'Microsoft.XMLHTTP'
];
for (var i=0; i < XHR_ids.length && !request; i++) {
try {
request = new ActiveXObject (XHR_ids[i]);
if (request) LAPI.Ajax.getRequest.msXMLHttpID = XHR_ids[i];
} catch (ex) {
request = null;
}
}
if (!request) LAPI.Ajax.getRequest.msXMLHttpID = null;
} else if (LAPI.Ajax.getRequest.msXMLHttpID) {
request = new ActiveXObject (LAPI.Ajax.getRequest.msXMLHttpID);
}
} // end if IE
} // end try-catch
return request;
}
},
$ : function (selector, doc, multi)
{
if (!selector || selector.length == 0) return null;
doc = doc || document;
if (typeof (selector) == 'string') {
if (selector.charAt (0) == '#') selector = selector.substring (1);
if (selector.length > 0) return doc.getElementById (selector);
return null;
} else {
if (multi) return Array.map (selector, function (id) {return LAPI.$ (id, doc);});
return Array.any (selector, function (id) {return LAPI.$ (id, doc);});
}
},
make : function (tag, attribs, css, doc)
{
doc = doc || document;
if (!tag || tag.length == 0) throw new Error ('No tag for LAPI.make');
var result = doc.createElement (tag);
Object.mergeSet (attribs, result);
Object.mergeSet (css, result.style);
if (/^(form|input|button|select|textarea)$/.test (tag) &&
result.id && result.id.length > 0 && !result.name
)
{
result.name = result.id;
}
return result;
},
formatException : function (ex, asDOM)
{
var name = ex.name || "";
var msg = ex.message || "";
var file = null;
var line = null;
if (msg && msg.length > 0 && msg.charAt (0) == '#') {
// User msg: don't confuse users with error locations. (Note: could also use
// custom exception types, but that doesn't work right on IE6.)
msg = msg.substring (1);
} else {
file = ex.fileName || ex.sourceURL || null; // Gecko, Webkit, others
line = ex.lineNumber || ex.line || null; // Gecko, Webkit, others
}
if (name || msg) {
if (!asDOM) {
return
'Exception ' + name + ': ' + msg
+ (file ? '\nFile ' + file + (line ? ' (' + line + ')' : "") : "")
;
} else {
var ex_msg = LAPI.make ('div');
ex_msg.appendChild (document.createTextNode ('Exception ' + name + ': ' + msg));
if (file) {
ex_msg.appendChild (LAPI.make ('br'));
ex_msg.appendChild
(document.createTextNode ('File ' + file + (line ? ' (' + line + ')' : "")));
}
return ex_msg;
}
} else {
return null;
}
}
};
} // end if (guard)
if (typeof (LAPI.Browser) == 'undefined') {
// Yes, usually it's better to test for available features. But sometimes there's no
// way around testing for specific browsers (differences in dimensions, layout errors,
// etc.)
LAPI.Browser =
(function (agent) {
var result = {};
result.client = agent;
var m = agent.match(/applewebkit\/(\d+)/);
result.is_webkit = (m != null);
result.is_safari = result.is_webkit && !agent.contains ('spoofer');
result.webkit_version = (m ? parseInt (m[1]) : 0);
result.is_khtml =
navigator.vendor == 'KDE'
|| (document.childNodes && !document.all && !navigator.taintEnabled && navigator.accentColorName);
result.is_gecko =
agent.contains ('gecko')
&& !/khtml|spoofer|netscape\/7\.0/.test (agent);
result.is_ff_1 = agent.contains ('firefox/1');
result.is_ff_2 = agent.contains ('firefox/2');
result.is_ff_ge_2 = /firefox\/[2-9]|minefield\/3/.test (agent);
result.is_ie = agent.contains ('msie') || !!window.ActiveXObject;
result.is_ie_lt_7 = false;
if (result.is_ie) {
var version = /msie ((\d|\.)+)/.exec (agent);
result.is_ie_lt_7 = (version != null && (parseFloat(version[1]) < 7));
}
result.is_opera = agent.contains ('opera');
result.is_opera_ge_9 = false;
result.is_opera_95 = false;
if (result.is_opera) {
m = /opera\/((\d|\.)+)/.exec (agent);
result.is_opera_95 = m && (parseFloat (m[1]) >= 9.5);
result.is_opera_ge_9 = m && (parseFloat (m[1]) >= 9.0);
}
result.is_mac = agent.contains ('mac');
return result;
})(navigator.userAgent.toLowerCase ());
} // end if (guard)
if (typeof (LAPI.DOM) == 'undefined') {
LAPI.DOM =
{
// IE6 doesn't have these Node constants in Node, so put them here
ELEMENT_NODE : 1,
ATTRIBUTE_NODE : 2,
TEXT_NODE : 3,
CDATA_SECTION_NODE : 4,
ENTITY_REFERENCE_NODE : 5,
ENTITY_NODE : 6,
PROCESSING_INSTRUCTION_NODE : 7,
COMMENT_NODE : 8,
DOCUMENT_NODE : 9,
DOCUMENT_TYPE_NODE : 10,
DOCUMENT_FRAGMENT_NODE : 11,
NOTATION_NODE : 12,
cleanAttributeName : function (attr_name)
{
if (!LAPI.Browser.is_ie) return attr_name;
if (!LAPI.DOM.cleanAttributeName._names) {
LAPI.DOM.cleanAttributeName._names = {
'class' : 'className'
,'cellspacing' : 'cellSpacing'
,'cellpadding' : 'cellPadding'
,'colspan' : 'colSpan'
,'maxlength' : 'maxLength'
,'readonly' : 'readOnly'
,'rowspan' : 'rowSpan'
,'tabindex' : 'tabIndex'
,'valign' : 'vAlign'
};
}
var cleaned = attr_name.toLowerCase ();
return LAPI.DOM.cleanAttributeName._names[cleaned] || cleaned;
},
importNode : function (into, node, deep)
{
if (!node) return null;
if (into.importNode) return into.importNode (node, deep);
if (node.ownerDocument == into) return node.cloneNode (deep);
var new_node = null;
switch (node.nodeType) {
case LAPI.DOM.ELEMENT_NODE :
new_node = into.createElement (node.nodeName);
Array.forEach (
node.attributes
, function (attr) {
if (attr && attr.nodeValue && attr.nodeValue.length > 0)
new_node.setAttribute (LAPI.DOM.cleanAttributeName (attr.name), attr.nodeValue);
}
);
new_node.style.cssText = node.style.cssText;
if (deep) {
Array.forEach (
node.childNodes
, function (child) {
var copy = LAPI.DOM.importNode (into, child, true);
if (copy) new_node.appendChild (copy);
}
);
}
return new_node;
case LAPI.DOM.TEXT_NODE :
return into.createTextNode (node.nodeValue);
case LAPI.DOM.CDATA_SECTION_NODE :
return (into.createCDATASection
? into.createCDATASection (node.nodeValue)
: into.createTextNode (node.nodeValue)
);
case LAPI.DOM.COMMENT_NODE :
return into.createComment (node.nodeValue);
default :
return null;
} // end switch
},
parse : function (str, content_type)
{
function getDocument (str, content_type)
{
if (typeof (DOMParser) != 'undefined') {
var parser = new DOMParser ();
if (parser && parser.parseFromString)
return parser.parseFromString (str, content_type);
}
// We don't have DOMParser
if (LAPI.Browser.is_ie) {
var doc = null;
// Apparently, these can be installed side-by-side. Try to get the newest one available.
// Unfortunately, one finds a variety of version strings on the net. I have no idea which
// ones are correct.
if (typeof (LAPI.DOM.parse.msDOMDocumentID) == 'undefined') {
// If we find a parser, we cache it. If we cannot find one, we also remember that.
var parsers =
[ 'MSXML6.DOMDocument','MSXML5.DOMDocument','MSXML4.DOMDocument','MSXML3.DOMDocument'
,'MSXML2.DOMDocument.5.0','MSXML2.DOMDocument.4.0','MSXML2.DOMDocument.3.0'
,'MSXML2.DOMDocument','MSXML.DomDocument','Microsoft.XmlDom'];
for (var i=0; i < parsers.length && !doc; i++) {
try {
doc = new ActiveXObject (parsers[i]);
if (doc) LAPI.DOM.parse.msDOMDocumentID = parsers[i];
} catch (ex) {
doc = null;
}
}
if (!doc) LAPI.DOM.parse.msDOMDocumentID = null;
} else if (LAPI.DOM.parse.msDOMDocumentID) {
doc = new ActiveXObject (LAPI.DOM.parse.msDOMDocumentID);
}
if (doc) {
doc.async = false;
doc.loadXML (str);
return doc;
}
}
// Try using a "data" URI (http://www.ietf.org/rfc/rfc2397). Reported to work on
// older Safaris.
content_type = content_type || 'application/xml';
var req = LAPI.Ajax.getRequest ();
if (req) {
// Synchronous is OK, since "data" URIs are local
req.open
('GET', 'data:' + content_type + ';charset=utf-8,' + encodeURIComponent (str), false);
if (req.overrideMimeType) req.overrideMimeType (content_type);
req.send (null);
return req.responseXML;
}
return null;
} // end getDocument
var doc = null;
try {
doc = getDocument (str, content_type);
} catch (ex) {
doc = null;
}
if ( ( (!doc || !doc.documentElement)
&& ( str.search (/^\s*(<xml[^>]*>\s*)?<!doctype\s+html/i) >= 0
|| str.search (/^\s*<html/i) >= 0
)
)
||
(doc && ( LAPI.Browser.is_ie
&& (!doc.documentElement
&& doc.parseError && doc.parseError.errorCode != 0
&& doc.parseError.reason.contains ('Error processing resource')
&& doc.parseError.reason.contains
('http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd')
)
)
)
)
{
// Either the text specified an (X)HTML document, but we failed to get a Document, or we
// hit the walls of the single-origin policy on IE which tries to get the DTD from the
// URI specified... Let's fake a document:
doc = LAPI.DOM.fakeHTMLDocument (str);
}
return doc;
},
parseHTML : function (str, sanity_check)
{
// Always use a faked document; parsing as XML and then treating the result as HTML doesn't work right with HTML5.
return LAPI.DOM.fakeHTMLDocument (str);
},
fakeHTMLDocument : function (str)
{
var body_tag = /<body.*?>/.exec (str);
if (!body_tag || body_tag.length == 0) return null;
body_tag = body_tag.index + body_tag[0].length; // Index after the opening body tag
var body_end = str.lastIndexOf ('</body>');
if (body_end < 0) return null;
var content = str.substring (body_tag, body_end); // Anything in between
content = content.replace(/<script(.|\s)*?\/script>/g, ""); // Sanitize: strip scripts
return new LAPI.DOM.DocumentFacade (content);
},
isValid : function (doc)
{
if (!doc) return doc;
if (typeof (doc.parseError) != 'undefined') { // IE
if (doc.parseError.errorCode != 0) {
throw new Error ( 'XML parse error: ' + doc.parseError.reason
+ ' line ' + doc.parseError.line
+ ' col ' + doc.parseError.linepos
+ '\nsrc = ' + doc.parseError.srcText);
}
} else {
// FF... others?
var root = doc.documentElement;
if (/^parsererror$/i.test (root.tagName)) {
throw new Error ('XML parse error: ' + root.getInnerText ());
}
}
return doc;
},
hasClass : function (node, className)
{
if (!node) return false;
return (' ' + node.className + ' ').contains (' ' + className + ' ');
},
setContent : function (node, content)
{
if (content == null) return node;
LAPI.DOM.removeChildren (node);
if (content.nodeName) { // presumably a DOM tree, like a span or a document fragment
node.appendChild (content);
} else if (typeof (node.innerHTML) != 'undefined') {
node.innerHTML = content.toString ();
} else {
node.appendChild (document.createTextNode (content.toString ()));
}
return node;
},
makeImage : function (src, width, height, title, doc)
{
return LAPI.make (
'img'
, {src : src, width: "" + width, height : "" + height, title : title}
, doc
);
},
makeButton : function (id, text, f, submit, doc)
{
return LAPI.make (
'input'
, {id : id || "", type: (submit ? 'submit' : 'button'), value: text, onclick: f}
, doc
);
},
makeLabel : function (id, text, for_elem, doc)
{
var label = LAPI.make ('label', {id: id || "", htmlFor: for_elem}, null, doc);
return LAPI.DOM.setContent (label, text);
},
makeLink : function (url, text, tooltip, onclick, doc)
{
var lk = LAPI.make ('a', {href: url, title: tooltip, onclick: onclick}, null, doc);
return LAPI.DOM.setContent (lk, text || url);
},
// Unfortunately, extending Node.prototype may not work on some browsers,
// most notably (you've guessed it) IE...
getInnerText : function (node)
{
if (node.textContent) return node.textContent;
if (node.innerText) return node.innerText;
var result = "";
if (node.nodeType == LAPI.DOM.TEXT_NODE) {
result = node.nodeValue;
} else {
Array.forEach (node.childNodes,
function (elem) {
switch (elem.nodeType) {
case LAPI.DOM.ELEMENT_NODE:
result += LAPI.DOM.getInnerText (elem);
break;
case LAPI.DOM.TEXT_NODE:
result += elem.nodeValue;
break;
}
}
);
}
return result;
},
removeNode : function (node)
{
if (node.parentNode) node.parentNode.removeChild (node);
return node;
},
removeChildren : function (node)
{
// if (typeof (node.innerHTML) != 'undefined') node.innerHTML = "";
// Not a good idea. On IE this destroys all contained nodes, even if they're still referenced
// from JavaScript! Can't have that...
while (node.firstChild) node.removeChild (node.firstChild);
return node;
},
insertNode : function (node, before)
{
before.parentNode.insertBefore (node, before);
return node;
},
insertAfter : function (node, after)
{
var next = after.nextSibling;
after.parentNode.insertBefore (node, next);
return node;
},
replaceNode : function (node, newNode)
{
node.parentNode.replaceChild (node, newNode);
return newNode;
},
isParentOf : function (parent, child)
{
while (child && child != parent && child.parentNode) child = child.parentNode;
return child == parent;
},
// Property is to be in CSS style, e.g. 'background-color', not in JS style ('backgroundColor')!
// Use standard 'cssFloat' for float property.
currentStyle : function (element, property)
{
function normalize (prop) {
// Don't use a regexp with a lambda function (available only in JS 1.3)... and I once had a
// case where IE6 goofed grossly with a lambda function. Since then I try to avoid those
// (though they're neat).
if (prop == 'cssFloat') return 'styleFloat'; // We'll try both variants below, standard first...
var result = prop.split ('-');
result =
Array.map (result, function (s) { if (s) return s.capitalizeFirst (); else return s;});
result = result.join ("");
return result.lowercaseFirst ();
}
if (element.ownerDocument.defaultView
&& element.ownerDocument.defaultView.getComputedStyle)
{ // Gecko etc.
if (property == 'cssFloat') property = 'float';
return
element.ownerDocument.defaultView.getComputedStyle (element, null).getPropertyValue (property);
} else {
var result;
if (element.currentStyle) { // IE, has subtle differences to getComputedStyle
result = element.currentStyle[property] || element.currentStyle[normalize (property)];
} else // Not exactly right, but best effort
result = element.style[property] || element.style[normalize (property)];
// Convert em etc. to pixels. Kudos to Dean Edwards; see
// http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291
if (!/^\d+(px)?$/i.test (result) && /^\d/.test (result) && element.runtimeStyle) {
var style = element.style.left;
var runtimeStyle = element.runtimeStyle.left;
element.runtimeStyle.left = element.currentStyle.left;
element.style.left = result || 0;
result = elem.style.pixelLeft + "px";
element.style.left = style;
element.runtimeStyle.left = runtimeStyle;
}
}
},
// Load a given image in a given size. Parameters:
// title
// Full title of the image, including the "File:" namespace
// url
// If != null, URL of an existing thumb for that image. If width is null, may contain the url
// of the full image.
// width
// If != null, desired width of the image, otherwise load the full image
// height
// If width != null, height should also be set.
// auto_thumbs
// True if missing thumbnails are generated automatically.
// success
// Function to be called once the image is loaded. Takes one parameter: the IMG-tag of
// the loaded image
// failure
// Function to be called if the image cannot be loaded. Takes one parameter: a string
// containing an error message.
loadImage : function (title, url, width, height, auto_thumbs, success, failure)
{
if (auto_thumbs && url) {
// MediaWiki-style with 404 handler. Set condition to false if your wiki does not have such a
// setup.
var img_src = null;
if (width) {
var i = url.lastIndexOf ('/');
if (i >= 0) {
img_src = url.substring (0, i)
+ url.substring (i).replace (/^\/\d+px-/, '/' + width + 'px-');
}
} else if (url) {
img_src = url;
}
if (!img_src) {
failure ("Cannot load image from url " + url);
return;
}
var img_loader =
LAPI.make (
'img'
, {src: img_src}
, {position: 'absolute', top: '0px', left: '0px', display: 'none'}
);
if (width) img_loader.width = "" + width;
if (height) img_loader.height = "" + height;
LAPI.Evt.attach (img_loader, 'load', function () {success (img_loader);});
document.body.appendChild (img_loader); // Now the browser goes loading the image
} else {
// No url to work with. Use parseWikitext to have a thumb generated an to get its URL.
LAPI.Ajax.parseWikitext (
'[[' + title + (width ? '|' + width + 'px' : "") + ']]'
, function (html, failureFunc) {
var dummy =
LAPI.make (
'div'
, null
, {position: 'absolute', top: '0px', left: '0px', display: 'none'}
);
document.body.appendChild (dummy); // Now start loading the image
dummy.innerHTML = html;
var imgs = dummy.getElementsByTagName ('img');
LAPI.Evt.attach (
imgs[0], 'load'
, function () {
success (imgs[0]);
LAPI.DOM.removeNode (dummy);
}
);
}
, function (request, json_result)
{
failure ("Image loading failed: " + request.status + ' ' + request.statusText);
}
, false // Not as preview
, null // user language: don't care
, null // on page: don't care
, 3600 // Cache for an hour
);
}
}
}; // end LAPI.DOM
LAPI.DOM.DocumentFacade = function () {this.initialize.apply (this, arguments);};
LAPI.DOM.DocumentFacade.prototype =
{
initialize : function (text)
{
// It's not a real document, but it will behave like one for our purposes.
this.documentElement = LAPI.make ('div', null, {display: 'none', position: 'absolute'});
this.body = LAPI.make ('div', null, {position: 'relative'});
this.documentElement.appendChild (this.body);
document.body.appendChild (this.documentElement);
this.body.innerHTML = text;
// Find all forms
var forms = document.getElementsByTagName ('form');
var self = this;
this.forms = Array.select (forms, function (f) {return LAPI.DOM.isParentOf (self.body, f);});
// Konqueror 4.2.3/4.2.4 clears form.elements when the containing div is removed from the
// parent document?!
if (!LAPI.Browser.is_khtml) {
LAPI.DOM.removeNode (this.documentElement);
} else {
this.dispose = function () {LAPI.DOM.removeNode (this.documentElement);};
// Since we must leave the stuff *in* the original document on Konqueror, we'll also need a
// dispose routine... what an ugly hack.
}
this.allIDs = {};
this.isFake = true;
},
createElement : function (tag) { return document.createElement (tag); },
createDocumentFragment : function () { return document.createDocumentFragment (); },
createTextNode : function (text) { return document.createTextNode (text); },
createComment : function (text) { return document.createComment (text); },
createCDATASection : function (text) { return document.createCDATASection (text); },
createAttribute : function (name) { return document.createAttribute (name); },
createEntityReference : function (name) { return document.createEntityReference (name); },
createProcessingInstruction : function (target, data) { return document.createProcessingInstruction (target, data); },
getElementsByTagName : function (tag)
{
// Grossly inefficient, but deprecated anyway
var res = [];
function traverse (node, tag)
{
if (node.nodeName.toLowerCase () == tag) res[res.length] = node;
var curr = node.firstChild;
while (curr) { traverse (curr, tag); curr = curr.nextSibling; }
}
traverse (this.body, tag.toLowerCase ());
return res;
},
getElementById : function (id)
{
function traverse (elem, id)
{
if (elem.id == id) return elem;
var res = null;
var curr = elem.firstChild;
while (curr && !res) {
res = traverse (curr, id);
curr = curr.nextSibling;
}
return res;
}
if (!this.allIDs[id]) this.allIDs[id] = traverse (this.body, id);
return this.allIDs[id];
}
// ...NS operations omitted
}; // end DocumentFacade
if (document.importNode) {
LAPI.DOM.DocumentFacade.prototype.importNode =
function (node, deep) { document.importNode (node, deep); };
}
} // end if (guard)
if (typeof (LAPI.WP) == 'undefined') {
LAPI.WP = {
getContentDiv : function (doc)
{
// Monobook, modern, classic skins
return LAPI.$ (['bodyContent', 'mw_contentholder', 'article'], doc);
},
fullImageSizeFromPage : function (doc)
{
// Get the full img size. This is screenscraping :-( but there are times where you don't
// want to get this info from the server using an Ajax call.
// Note: we get the size from the file history table because the text just below the image
// is all scrambled on RTL wikis. For instance, on ar-WP, it is
// " (1,806 × 1,341 بكسل، حجم الملف: 996 كيلوبايت، نوع الملف: image/jpeg) and with uselang=en,
// it is at ar-WP " (1,806 × 1,341 pixels, file size: 996 KB, MIME type: image/jpeg)"
// However, in the file history table, it looks good no matter the language and writing
// direction.
// Update: this fails on e.g. ar-WP because someone had the great idea to use localized
// numerals, but the digit transform table is empty!
var result = {width : 0, height : 0};
var file_hist = LAPI.$ ('mw-imagepage-section-filehistory', doc);
if (!file_hist) return result;
try {
var $file_curr = window.jQuery ? $(file_hist).find('td.filehistory-selected') : file_hist.querySelectorAll('td.filehistory-selected');
// Did they change the column order here? It once was nextSibling.nextSibling... but somehow
// the thumbnails seem to be gone... Right:
// http://svn.wikimedia.org/viewvc/mediawiki/trunk/phase3/includes/ImagePage.php?r1=52385&r2=53130
file_hist = LAPI.DOM.getInnerText ($file_curr[0].nextSibling);
if (!file_hist.contains ('×')) {
file_hist = LAPI.DOM.getInnerText ($file_curr[0].nextSibling.nextSibling);
if (!file_hist.contains ('×')) file_hist = null;
}
} catch (ex) {
return result;
}
// Now we have "number×number" followed by something arbitrary
if (file_hist) {
file_hist = file_hist.split ('×', 2);
result.width = parseInt (file_hist.shift ().replace (/[^0-9]/g, ""), 10);
// Height is a bit more difficult because e.g. uselang=eo uses a space as the thousands
// separator. Hence we have to extract this more carefully
file_hist = file_hist.pop(); // Everything after the "×"
// Remove any white space embedded between digits
file_hist = file_hist.replace (/(\d)\s*(\d)/g, '$1$2');
file_hist = file_hist.split (" ",2).shift ().replace (/[^0-9]/g, "");
result.height = parseInt (file_hist, 10);
if (isNaN (result.width) || isNaN (result.height)) result = {width : 0, height : 0};
}
return result;
},
getPreviewImage : function (title, doc)
{
var file_div = LAPI.$ ('file', doc);
if (!file_div) return null; // Catch page without file...
var imgs = file_div.getElementsByTagName ('img');
title = title || mw.config.get('wgTitle');
for (var i = 0; i < imgs.length; i++) {
var src = decodeURIComponent (imgs[i].getAttribute ('src', 2)).replace ('%26', '&');
if (src.search (new RegExp ('^' + LAPI_file_store + '.*/' + title.replace (/ /g, '_').escapeRE () + '(/.*)?$')) == 0)
return imgs[i];
}
return null;
},
pageFromLink : function (lk)
{
if (!lk) return null;
var href = lk.getAttribute ('href', 2);
if (!href) return null;
// This is a bit tricky to get right, because wgScript can be a substring prefix of
// wgArticlePath, or vice versa.
var script = mw.config.get('wgScript') + '?';
if (href.startsWith (script) || href.startsWith (mw.config.get('wgServer') + script) || mw.config.get('wgServer').startsWith('//') && href.startsWith (document.location.protocol + mw.config.get('wgServer') + script)) {
// href="/w/index.php?title=..."
return href.getParamValue ('title');
}
// Now try wgArticlePath: href="/wiki/..."
var prefix = mw.config.get('wgArticlePath').replace ('$1', "");
if (!href.startsWith (prefix)) prefix = mw.config.get('wgServer') + prefix; // Fully expanded URL?
if (!href.startsWith (prefix) && prefix.startsWith ('//')) prefix = document.location.protocol + prefix; // Protocol-relative wgServer?
if (href.startsWith (prefix))
return decodeURIComponent (href.substring (prefix.length));
// Do we have variants?
var variants = mw.config.get('wgVariantArticlePath');
if (variants && variants.length > 0)
{
var re =
new RegExp (variants.escapeRE().replace ('\\$2', "[^\\/]*").replace ('\\$1', "(.*)"));
var m = re.exec (href);
if (m && m.length > 1) return decodeURIComponent (m[m.length-1]);
}
// Finally alternative action paths
var actions = mw.config.get('wgActionPaths');
if (actions) {
for (var i=0; i < actions.length; i++) {
var p = actions[i];
if (p && p.length > 0) {
p = p.replace('$1', "");
if (!href.startsWith (p)) p = mw.config.get('wgServer') + p;
if (!href.startsWith (p) && p.startsWith('//')) p = document.location.protocol + p;
if (href.startsWith (p))
return decodeURIComponent (href.substring (p.length));
}
}
}
return null;
},
revisionFromHtml : function (htmlOfPage)
{
var revision_id = null;
if (window.mediaWiki) { // MW 1.17+
revision_id = htmlOfPage.match (/(mediaWiki|mw).config.set\(\{.*"wgCurRevisionId"\s*:\s*(\d+),/);
if (revision_id) revision_id = parseInt (revision_id[2], 10);
} else { // MW < 1.17
revision_id = htmlOfPage.match (/wgCurRevisionId\s*=\s*(\d+)[;,]/);
if (revision_id) revision_id = parseInt (revision_id[1], 10);
}
return revision_id;
}
}; // end LAPI.WP
} // end if (guard)
if (typeof (LAPI.Ajax.doAction) == 'undefined') {
mw.loader.load('/wiki/MediaWiki:AjaxSubmit.js?action=raw&ctype=text/javascript'); // Legacy code: ajaxSubmit
LAPI.Ajax.getXML = function (request, failureFunc)
{
var doc = null;
if (request.responseXML && request.responseXML.documentElement) {
doc = request.responseXML;
} else {
try {
doc = LAPI.DOM.parse (request.responseText, 'text/xml');
} catch (ex) {
if (typeof (failureFunc) == 'function') failureFunc (request, ex);
doc = null;
}
}
if (doc) {
try {
doc = LAPI.DOM.isValid (doc);
} catch (ex) {
if (typeof (failureFunc) == 'function') failureFunc (request, ex);
doc = null;
}
}
return doc;
};
LAPI.Ajax.getHTML = function (request, failureFunc, sanity_check)
{
// Konqueror sometimes has severe problems with responseXML. It does set it, but getElementById
// may fail to find elements known to exist.
var doc = null;
// Always use our own parser instead of responseXML; that doesn't work right with HTML5. (It did work with XHTML, though.)
// if ( request.responseXML && request.responseXML.documentElement
// && request.responseXML.documentElement.tagName == 'HTML'
// && (!sanity_check || request.responseXML.getElementById (sanity_check) != null)
// )
// {
// doc = request.responseXML;
// } else {
try {
doc = LAPI.DOM.parseHTML (request.responseText, sanity_check);
if (!doc) throw new Error ('#Could not understand request result');
} catch (ex) {
if (typeof (failureFunc) == 'function') failureFunc (request, ex);
doc = null;
}
// }
if (doc) {
try {
doc = LAPI.DOM.isValid (doc);
} catch (ex) {
if (typeof (failureFunc) == 'function') failureFunc (request, ex);
doc = null;
}
}
if (doc === null) return doc;
// We've gotten XML. There is a subtle difference between XML and (X)HTML concerning leading newlines in textareas:
// XML is required to pass through any whitespace (http://www.w3.org/TR/2004/REC-xml-20040204/#sec-white-space), whereas
// HTML may or must not (e.g. http://www.w3.org/TR/html4/appendix/notes.html#h-B.3.1, though it is unclear whether that
// really applies to the content of a textarea, but the draft HTML 5 spec explicitly says that the first newline in a
// <textarea> is swallowed in HTML:
// http://www.whatwg.org/specs/web-apps/current-work/multipage/syntax.html#element-restrictions).
// Because of the latter MW1.18+ adds a newline after the <textarea> start tag if the value starts with a newline. That
// solves bug 12130 (leading newlines swallowed), but since XML passes us this extra newline, we might end up adding a
// leading newline upon each edit.
// Let's try to make sure that all textarea's values are as they should be in HTML.
// Note: since the above change to always use our own parser, which always returns a faked HTML document, this should be
// unnecessary since doc.isFake should always be true.
if (typeof (LAPI.Ajax.getHTML.extraNewlineRE) == 'undefined') {
// Feature detection. Compare value after parsing with value after .innerHTML.
LAPI.Ajax.getHTML.extraNewlineRE = null; // Don't know; hence do nothing
try {
var testTA = '<textarea id="test">\nTest</textarea>';
var testString = '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">\n'
+ '<html xmlns="http://www.w3.org/1999/xhtml" lang="en" dir="ltr">\n'
+ '<head><title>Test</title></head><body><form>' + testTA + '</form></body>\n'
+ '</html>';
var testDoc = LAPI.DOM.parseHTML (testString, 'test');
var testVal = "" + testDoc.getElementById ('test').value;
if (testDoc.dispose) testDoc.dispose();
var testDiv = LAPI.make ('div', null, {display: 'none'});
document.body.appendChild (testDiv);
testDiv.innerHTML = testTA;
if (testDiv.firstChild.value != testVal) {
LAPI.Ajax.getHTML.extraNewlineRE = /^\r?\n/;
if (testDiv.firstChild.value != testVal.replace(LAPI.Ajax.getHTML.extraNewlineRE, "")) {
// Huh? Not the expected difference: go back to "don't know" mode
LAPI.Ajax.getHTML.extraNewlineRE = null;
}
}
LAPI.DOM.removeNode (testDiv);
} catch (any) {
LAPI.Ajax.getHTML.extraNewlineRE = null;
}
}
if (!doc.isFake && LAPI.Ajax.getHTML.extraNewlineRE !== null) {
// If have a "fake" doc, then we did parse through .innerHTML anyway. No need to fix anything.
// (Hm. Maybe we should just always use a fake doc?)
var tas = doc.getElementsByTagName ('textarea');
for (var i = 0, l = tas.length; i < l; i++) {
tas[i].value = tas[i].value.replace(LAPI.Ajax.getHTML.extraNewlineRE, "");
}
}
return doc;
};
LAPI.Ajax.get = function (uri, params, success, failure, config)
{
var original_failure = failure;
if (!failure || typeof (failure) != 'function') failure = function () {};
if (!success || typeof (success) != 'function')
throw new Error ('No success function supplied for LAPI.Ajax.get '
+ uri + ' with arguments ' + params.toString ());
var request = LAPI.Ajax.getRequest ();
if (!request) {
failure (request);
return;
}
var args = "";
var question_mark = uri.indexOf ('?');
if (question_mark) {
args = uri.substring (question_mark + 1);
uri = uri.substring (0, question_mark);
}
if (params != null) {
if (typeof (params) == 'string' && params.length > 0) {
args += (args.length > 0 ? '&' : "")
+ ((params.charAt (0) == '&' || params.charAt (0) == '?')
? params.substring (1)
: params
); // Must already be encoded!
} else {
for (var param in params) {
args += (args.length > 0 ? '&' : "") + param;
if (params[param] != null) args += '=' + encodeURIComponent (params[param]);
}
}
}
var method;
if (uri.startsWith ('//')) uri = document.location.protocol + uri; // Avoid protocol-relative URIs (IE7 bug)
if (uri.length + args.length + 1 < (LAPI.Browser.is_ie ? 2040 : 4080)) {
// Both browsers and web servers may have limits on URL length. IE has a limit of 2083 characters
// (2048 in the path part), and the WMF servers seem to impose a limit of 4kB.
method = 'GET'; uri += '?' + args; args = null;
} else {
method = 'POST'; // We'll lose caching, but at least we can make the request.
}
request.open (method, uri, true);
request.setRequestHeader ('Pragma', 'cache=yes');
request.setRequestHeader (
'Cache-Control'
, 'no-transform'
+ (params && params.maxage ? ', max-age=' + params.maxage : "")
+ (params && params.smaxage ? ', s-maxage=' + params.smaxage : "")
);
if (config) {
for (var conf in config) {
if (conf == 'overrideMimeType') {
if (config[conf] && config[conf].length > 0 && request.overrideMimeType)
request.overrideMimeType (config[conf]);
} else {
request.setRequestHeader (conf, config[conf]);
}
}
}
if (args) request.setRequestHeader ('Content-Type', 'application/x-www-form-urlencoded');
request.onreadystatechange =
function ()
{
if (request.readyState != 4) return; // Wait until the request has completed.
try {
if (request.status != 200)
throw new Error
('#Request to server failed. Status: ' + request.status + ' ' + request.statusText
+ ' URI: ' + uri);
if (!request.responseText)
throw new Error ('#Empty response from server for request ' + uri);
} catch (ex) {
failure (request, ex);
return;
}
success (request, original_failure);
};
request.send (args);
};
LAPI.Ajax.getPage = function (page, action, params, success, failure)
{
var uri = mw.config.get('wgServer') + mw.config.get('wgScript') + '?title=' + encodeURIComponent (page)
+ (action ? '&action=' + action : "");
LAPI.Ajax.get (uri, params, success, failure, {overrideMimeType : 'application/xml'});
};
// modify is supposed to save the changes at the end, e.g. using LAPI.Ajax.submit.
// modify is called with three parameters: the document, possibly the form, and the optional
// failure function. The failure function is called with the request as the first parameter,
// and possibly an exception as the second parameter.
LAPI.Ajax.doAction = function (page, action, form, modify, failure)
{
if (!page || !action || !modify || typeof (modify) != 'function')
throw new Error ('Parameter inconsistency in LAPI.Ajax.doAction.');
var original_failure = failure;
if (!failure || typeof (failure) != 'function') failure = function () {};
LAPI.Ajax.getPage (
page, action, null // No additional parameters
, function (request, failureFunc) {
var doc = null;
var the_form = null;
var revision_id = null;
try {
// Convert responseText into DOM tree.
doc = LAPI.Ajax.getHTML (request, failureFunc, form);
if (!doc) return;
var err_msg = LAPI.$ ('permissions-errors', doc);
if (err_msg) throw new Error ('#' + LAPI.DOM.getInnerText (err_msg));
if (form) {
the_form = LAPI.$ (form, doc);
if (!the_form) throw new Error ('#Server reply does not contain mandatory form.');
}
revision_id = LAPI.WP.revisionFromHtml (request.responseText);
} catch (ex) {
failureFunc (request, ex);
return;
}
modify (doc, the_form, original_failure, revision_id)
}
, failure
);
}; // end LAPI.Ajax.doAction
LAPI.Ajax.submit = function (form, after_submit)
{
try {
ajaxSubmit (form, null, after_submit, true); // Legacy code from MediaWiki:AjaxSubmit
} catch (ex) {
after_submit (null, ex);
}
}; // end LAPI.Ajax.submit
LAPI.Ajax.editPage = function (page, modify, failure)
{
LAPI.Ajax.doAction (page, 'edit', 'editform', modify, failure);
}; // end LAPI.Ajax.editPage
LAPI.Ajax.checkEdit = function (request)
{
if (!request) return true;
// Check for previews (session token lost?) or edit forms (edit conflict).
try {
var doc = LAPI.Ajax.getHTML (request, function () {throw new Error ('Cannot check HTML');});
if (!doc) return false;
return LAPI.$ (['wikiPreview', 'editform'], doc) == null;
} catch (anything) {
return false;
}
}; // end LAPI.Ajax.checkEdit
LAPI.Ajax.submitEdit = function (form, success, failure)
{
if (!success || typeof (success) != 'function') success = function () {};
if (!failure || typeof (failure) != 'function') failure = function () {};
LAPI.Ajax.submit (
form
, function (request, ex)
{
if (ex) {
failure (request, ex);
} else {
var successful = false;
try {
successful = request && request.status == 200 && LAPI.Ajax.checkEdit (request);
} catch (some_error) {
failure (request, some_error);
return;
}
if (successful)
success (request);
else
failure (request);
}
}
);
}; // end LAPI.Ajax.submitEdit
LAPI.Ajax.apiGet = function (action, params, success, failure)
{
var original_failure = failure;
if (!failure || typeof (failure) != 'function') failure = function () {};
if (!success || typeof (success) != 'function')
throw new Error ('No success function supplied for LAPI.Ajax.apiGet '
+ action + ' with arguments ' + params.toString ());
var is_json = false;
if (params != null) {
if (typeof (params) == 'string') {
if (!/format=[^&]+/.test (params)) params += '&format=json';
is_json = /format=json(&|$)/.test (params); // Exclude jsonfm, which actually serves XHTML
} else {
if (typeof (params['format']) != 'string' || params.format.length == 0) params.format = 'json';
is_json = params.format == 'json';
}
}
var uri = mw.config.get('wgServer') + mw.config.get('wgScriptPath') + '/api.php' + (action ? '?action=' + action : "");
LAPI.Ajax.get (
uri, params
, function (request, failureFunc) {
if (is_json && request.responseText.trimLeft().charAt (0) != '{') {
failureFunc (request);
} else {
success (
request
, (is_json ? eval ('(' + request.responseText.trimLeft() + ')') : null)
, original_failure
);
}
}
, failure
);
}; // end LAPI.Ajax.apiGet
LAPI.Ajax.parseWikitext = function (wikitext, success, failure, as_preview, user_language, on_page, cache)
{
if (!failure || typeof (failure) != 'function') failure = function () {};
if (!success || typeof (success) != 'function')
throw new Error ('No success function supplied for parseWikitext');
if (!wikitext && !on_page)
throw new Error ('No wikitext or page supplied for parseWikitext');
var params = null;
if (!wikitext) {
params = {pst: null, page: on_page};
} else {
params =
{ pst : null // Do the pre-save-transform: Pipe magic, tilde expansion, etc.
,text :
(as_preview ? '\<div style="border:1px solid red; padding:0.5em;"\>'
+ '\<div class="previewnote"\>'
+ '\{\{MediaWiki:Previewnote/' + (user_language || mw.config.get('wgUserLanguage')) +'\}\}'
+ '\<\/div>\<div\>\n'
: "")
+ wikitext
+ (as_preview ? '\<\/div\>\<div style="clear:both;"\>\<\/div\>\<\/div\>' : "")
,title: on_page || mw.config.get('wgPageName') || "API"
};
}
params.prop = 'text';
params.uselang = user_language || mw.config.get('wgUserLanguage'); // see bugzilla 22764
if (cache && /^\d+$/.test(cache=cache.toString())) {
params.maxage = cache;
params.smaxage = cache;
}
LAPI.Ajax.apiGet (
'parse'
, params
, function (req, json_result, failureFunc)
{
// Success.
if (!json_result || !json_result.parse || !json_result.parse.text) {
failureFunc (req, json_result);
return;
}
success (json_result.parse.text['*'], failureFunc);
}
, failure
);
}; // end LAPI.Ajax.parseWikitext
// Throbber backward-compatibility
LAPI.Ajax.injectSpinner = function (elementBefore, id) {}; // No-op, replaced as appropriate below.
LAPI.Ajax.removeSpinner = function (id) {}; // No-op, replaced as appropriate below.
if (typeof window.jQuery == 'undefined' || typeof window.mediaWiki == 'undefined' || typeof window.mediaWiki.loader == 'undefined') {
// Assume old-stlye
if (typeof window.injectSpinner != 'undefined') {
LAPI.Ajax.injectSpinner = window.injectSpinner;
}
if (typeof window.removeSpinner != 'undefined') {
LAPI.Ajax.removeSpinner = window.removeSpinner;
}
} else {
window.mediaWiki.loader.using('jquery.spinner', function () {
LAPI.Ajax.injectSpinner = function (elementBefore, id) {
window.jQuery(elementBefore).injectSpinner(id);
}
LAPI.Ajax.removeSpinner = function (id) {
window.jQuery.removeSpinner(id);
}
});
}
} // end if (guard)
if (typeof (LAPI.Pos) == 'undefined') {
LAPI.Pos =
{
// Returns the global coordinates of the mouse pointer within the document.
mousePosition : function (evt)
{
if (!evt || (typeof (evt.pageX) == 'undefined' && typeof (evt.clientX) == 'undefined'))
// No way to calculate a mouse pointer position
return null;
if (typeof (evt.pageX) != 'undefined')
return { x : evt.pageX, y : evt.pageY };
var offset = LAPI.Pos.scrollOffset ();
var mouse_delta = LAPI.Pos.mouse_offset ();
var coor_x = evt.clientX + offset.x - mouse_delta.x;
var coor_y = evt.clientY + offset.y - mouse_delta.y;
return { x : coor_x, y : coor_y };
},
// Operations on document level:
// Returns the scroll offset of the whole document (in other words, the coordinates
// of the top left corner of the viewport).
scrollOffset : function ()
{
return {x : LAPI.Pos.getScroll ('Left'), y : LAPI.Pos.getScroll ('Top') };
},
getScroll : function (what)
{
var s = 'scroll' + what;
return (document.documentElement ? document.documentElement[s] : 0)
|| document.body[s] || 0;
},
// Returns the size of the viewport (result.x is the width, result.y the height).
viewport : function ()
{
return {x : LAPI.Pos.getViewport ('Width'), y : LAPI.Pos.getViewport ('Height') };
},
getViewport : function (what)
{
if ( LAPI.Browser.is_opera_95 && what == 'Height'
|| LAPI.Browser.is_safari && !document.evaluate)
return window['inner' + what];
var s = 'client' + what;
if (LAPI.Browser.is_opera) return document.body[s];
return (document.documentElement ? document.documentElement[s] : 0)
|| document.body[s] || 0;
},
// Operations on DOM nodes
position : (function ()
{
// The following is the jQuery.offset implementation. We cannot use jQuery yet in globally
// activated scripts (it has strange side effects for Opera 8 users who can't log in anymore,
// and it breaks the search box for some users). Note that jQuery does not support Opera 8.
// Until the WMF servers serve jQuery by default, this copy from the jQuery 1.3.2 sources is
// needed here. If and when we have jQuery available officially, the whole thing here can be
// replaced by "var tmp = jQuery (node).offset(); return {x:tmp.left, y:tmp.top};"
// Kudos to the jQuery development team. Any errors in this adaptation are my own. (Lupo,
// 2009-08-24).
var data = null;
function jQuery_init ()
{
data = {};
// Capability check from jQuery.
var body = document.body;
var container = document.createElement('div');
var html =
'<div style="position:absolute;top:0;left:0;margin:0;border:5px solid #000;'
+ 'padding:0;width:1px;height:1px;"><div></div></div><table style="position:absolute;'
+ 'top:0;left:0;margin:0;border:5px solid #000;padding:0;width:1px;height:1px;" '
+ 'cellpadding="0" cellspacing="0"><tr><td></td></tr></table>';
var rules = { position: 'absolute', visibility: 'hidden'
,top: 0, left: 0
,margin: 0, border: 0
,width: '1px', height: '1px'
};
Object.merge (rules, container.style);
container.innerHTML = html;
body.insertBefore(container, body.firstChild);
var innerDiv = container.firstChild;
var checkDiv = innerDiv.firstChild;
var td = innerDiv.nextSibling.firstChild.firstChild;
data.doesNotAddBorder = (checkDiv.offsetTop !== 5);
data.doesAddBorderForTableAndCells = (td.offsetTop === 5);
innerDiv.style.overflow = 'hidden', innerDiv.style.position = 'relative';
data.subtractsBorderForOverflowNotVisible = (checkDiv.offsetTop === -5);
var bodyMarginTop = body.style.marginTop;
body.style.marginTop = '1px';
data.doesNotIncludeMarginInBodyOffset = (body.offsetTop === 0);
body.style.marginTop = bodyMarginTop;
body.removeChild(container);
};
function jQuery_offset (node)
{
if (node === node.ownerDocument.body) return jQuery_bodyOffset (node);
if (node.getBoundingClientRect) {
var box = node.getBoundingClientRect ();
var scroll = LAPI.Pos.scrollOffset ();
return {x : (box.left + scroll.x), y : (box.top + scroll.y)};
}
if (!data) jQuery_init ();
var elem = node;
var offsetParent = elem.offsetParent;
var prevOffsetParent = elem;
var doc = elem.ownerDocument;
var prevComputedStyle = doc.defaultView.getComputedStyle(elem, null);
var computedStyle;
var top = elem.offsetTop;
var left = elem.offsetLeft;
while ( (elem = elem.parentNode) && elem !== doc.body && elem !== doc.documentElement ) {
computedStyle = doc.defaultView.getComputedStyle(elem, null);
top -= elem.scrollTop, left -= elem.scrollLeft;
if ( elem === offsetParent ) {
top += elem.offsetTop, left += elem.offsetLeft;
if ( data.doesNotAddBorder
&& !(data.doesAddBorderForTableAndCells && /^t(able|d|h)$/i.test(elem.tagName))
)
{
top += parseInt (computedStyle.borderTopWidth, 10) || 0;
left += parseInt (computedStyle.borderLeftWidth, 10) || 0;
}
prevOffsetParent = offsetParent; offsetParent = elem.offsetParent;
}
if (data.subtractsBorderForOverflowNotVisible && computedStyle.overflow !== 'visible')
{
top += parseInt (computedStyle.borderTopWidth, 10) || 0;
left += parseInt (computedStyle.borderLeftWidth, 10) || 0;
}
prevComputedStyle = computedStyle;
}
if (prevComputedStyle.position === 'relative' || prevComputedStyle.position === 'static') {
top += doc.body.offsetTop;
left += doc.body.offsetLeft;
}
if (prevComputedStyle.position === 'fixed') {
top += Math.max (doc.documentElement.scrollTop, doc.body.scrollTop);
left += Math.max (doc.documentElement.scrollLeft, doc.body.scrollLeft);
}
return {x: left, y: top};
}
function jQuery_bodyOffset (body)
{
if (!data) jQuery_init();
var top = body.offsetTop, left = body.offsetLeft;
if (data.doesNotIncludeMarginInBodyOffset) {
top += parseInt (LAPI.DOM.currentStyle (body, 'margin-top'), 10) || 0;
left += parseInt (LAPI.DOM.currentStyle (body, 'margin-left'), 10) || 0;
}
return {x: left, y: top};
}
return jQuery_offset;
})(),
isWithin : function (node, x, y)
{
if (!node || !node.parentNode) return false;
var pos = LAPI.Pos.position (node);
return (x == null || x > pos.x && x < pos.x + node.offsetWidth)
&& (y == null || y > pos.y && y < pos.y + node.offsetHeight);
},
// Private:
// IE has some strange offset...
mouse_offset : function ()
{
if (LAPI.Browser.is_ie) {
var doc_elem = document.documentElement;
if (doc_elem) {
if (typeof (doc_elem.getBoundingClientRect) == 'function') {
var tmp = doc_elem.getBoundingClientRect ();
return {x : tmp.left, y : tmp.top};
} else {
return {x : doc_elem.clientLeft, y : doc_elem.clientTop};
}
}
}
return {x: 0, y : 0};
}
}; // end LAPI.Pos
} // end if (guard)
if (typeof (LAPI.Evt) == 'undefined') {
LAPI.Evt =
{
listenTo : function (object, node, evt, f, capture)
{
var listener = LAPI.Evt.makeListener (object, f);
LAPI.Evt.attach (node, evt, listener, capture);
},
attach : function (node, evt, f, capture)
{
if (node.attachEvent) node.attachEvent ('on' + evt, f);
else if (node.addEventListener) node.addEventListener (evt, f, capture);
else node['on' + evt] = f;
},
remove : function (node, evt, f, capture)
{
if (node.detachEvent) node.detachEvent ('on' + evt, f);
else if (node.removeEventListener) node.removeEventListener (evt, f, capture);
else node['on' + evt] = null;
},
makeListener : function (obj, listener)
{
// Some hacking around to make sure 'this' is set correctly
var object = obj, f = listener;
return function (evt) { return f.apply (object, [evt || window.event]); }
// Alternative implementation:
// var f = listener.bind (obj);
// return function (evt) { return f (evt || window.event); };
},
kill : function (evt)
{
if (typeof (evt.preventDefault) == 'function') {
evt.stopPropagation ();
evt.preventDefault (); // Don't follow the link
} else if (typeof (evt.cancelBubble) != 'undefined') { // IE...
evt.cancelBubble = true;
}
return false; // Don't follow the link (IE)
}
}; // end LAPI.Evt
} // end if (guard)
if (typeof (LAPI.Edit) == 'undefined') {
LAPI.Edit = function () {this.initialize.apply (this, arguments);};
LAPI.Edit.SAVE = 1;
LAPI.Edit.PREVIEW = 2;
LAPI.Edit.REVERT = 4;
LAPI.Edit.CANCEL = 8;
LAPI.Edit.prototype =
{
initialize : function (initial_text, columns, rows, labels, handlers)
{
var my_labels =
{box : null, preview : null, save : 'Save', cancel : 'Cancel', nullsave : null, revert : null, post: null};
if (labels) my_labels = Object.merge (labels, my_labels);
this.labels = my_labels;
this.timestamp = (new Date ()).getTime ();
this.id = 'simpleedit_' + this.timestamp;
this.view = LAPI.make ('div', {id : this.id}, {marginRight: '1em'});
// Somehow, the textbox extends beyond the bounding box of the view. Don't know why, but
// adding a small margin fixes the layout more or less.
this.form =
LAPI.make (
'form'
, { id : this.id + '_form'
,action : ""
,onsubmit: (function () {})
}
);
if (my_labels.box) {
var label = LAPI.make ('div');
label.appendChild (LAPI.DOM.makeLabel (this.id + '_label', my_labels.box, this.id + '_text'));
this.form.appendChild (label);
}
this.textarea =
LAPI.make (
'textarea'
, { id : this.id + '_text'
,cols : columns
,rows : rows
,value: (initial_text ? initial_text.toString () : "")
}
);
LAPI.Evt.attach (this.textarea, 'keyup', LAPI.Evt.makeListener (this, this.text_changed));
// Catch cut/copy/paste through the context menu. Some browsers support oncut, oncopy,
// onpaste events for this, but since that's only IE, FF 3, Safari 3, and Chrome, we
// cannot rely on this. Instead, we check again as soon as we leave the textarea. Only
// minor catch is that on FF 3, the next focus target is determined before the blur event
// fires. Since in practice save will always be enabled, this shouldn't be a problem.
LAPI.Evt.attach (this.textarea, 'mouseout', LAPI.Evt.makeListener (this, this.text_changed));
LAPI.Evt.attach (this.textarea, 'blur', LAPI.Evt.makeListener (this, this.text_changed));
this.form.appendChild (this.textarea);
this.form.appendChild (LAPI.make ('br'));
this.preview_section =
LAPI.make ('div', null, {borderBottom: '1px solid #8888aa', display: 'none'});
this.view.insertBefore (this.preview_section, this.view.firstChild);
this.save =
LAPI.DOM.makeButton
(this.id + '_save', my_labels.save, LAPI.Evt.makeListener (this, this.do_save));
this.form.appendChild (this.save);
if (my_labels.preview) {
this.preview =
LAPI.DOM.makeButton
(this.id + '_preview', my_labels.preview, LAPI.Evt.makeListener (this, this.do_preview));
this.form.appendChild (this.preview);
}
this.cancel =
LAPI.DOM.makeButton
(this.id + '_cancel', my_labels.cancel, LAPI.Evt.makeListener (this, this.do_cancel));
this.form.appendChild (this.cancel);
this.view.appendChild (this.form);
if (my_labels.post) {
this.post_text = LAPI.DOM.setContent (LAPI.make ('div'), my_labels.post);
this.view.appendChild (this.post_text);
}
if (handlers) Object.merge (handlers, this);
if (typeof (this.ongettext) != 'function')
this.ongettext = function (text) { return text;}; // Default: no modifications
this.current_mask = LAPI.Edit.SAVE + LAPI.Edit.PREVIEW + LAPI.Edit.REVERT + LAPI.Edit.CANCEL;
if ((!initial_text || initial_text.trim ().length == 0) && this.preview)
this.preview.disabled = true;
if (my_labels.revert) {
this.revert =
LAPI.DOM.makeButton
(this.id + '_revert', my_labels.revert, LAPI.Evt.makeListener (this, this.do_revert));
this.form.insertBefore (this.revert, this.cancel);
}
this.original_text = "";
},
getView : function ()
{
return this.view;
},
getText : function ()
{
return this.ongettext (this.textarea.value);
},
setText : function (text)
{
this.textarea.value = text;
this.original_text = text;
this.text_changed ();
},
changeText : function (text)
{
this.textarea.value = text;
this.text_changed ();
},
hidePreview : function ()
{
this.preview_section.style.display = 'none';
if (this.onpreview) this.onpreview (this);
},
showPreview : function ()
{
this.preview_section.style.display = "";
if (this.onpreview) this.onpreview (this);
},
setPreview : function (html)
{
if (html.nodeName) {
LAPI.DOM.removeChildren (this.preview_section);
this.preview_section.appendChild (html);
} else {
this.preview_section.innerHTML = html;
}
},
busy : function (show)
{
if (show)
LAPI.Ajax.injectSpinner (this.cancel, this.id + '_spinner');
else
LAPI.Ajax.removeSpinner (this.id + '_spinner');
},
do_save : function (evt)
{
if (this.onsave) this.onsave (this);
return true;
},
do_revert : function (evt)
{
this.changeText (this.original_text);
return true;
},
do_cancel : function (evt)
{
if (this.oncancel) this.oncancel (this);
return true;
},
do_preview : function (evt)
{
var self = this;
this.busy (true);
LAPI.Ajax.parseWikitext (
this.getText ()
, function (text, failureFunc)
{
self.busy (false);
self.setPreview (text);
self.showPreview ();
}
, function (req, json_result)
{
// Error. TODO: user feedback?
self.busy (false);
}
, true
, mw.config.get('wgUserLanguage') || null
, mw.config.get('wgPageName') || null
);
return true;
},
enable : function (bit_set)
{
var call_text_changed = false;
this.current_mask = bit_set;
this.save.disabled = ((bit_set & LAPI.Edit.SAVE) == 0);
this.cancel.disabled = ((bit_set & LAPI.Edit.CANCEL) == 0);
if (this.preview) {
if ((bit_set & LAPI.Edit.PREVIEW) == 0)
this.preview.disabled = true;
else
call_text_changed = true;
}
if (this.revert) {
if ((bit_set & LAPI.Edit.REVERT) == 0)
this.revert.disabled = true;
else
call_text_changed = true;
}
if (call_text_changed) this.text_changed ();
},
text_changed : function (evt)
{
var text = this.textarea.value;
text = text.trim ();
var length = text.length;
if (this.preview && (this.current_mask & LAPI.Edit.PREVIEW) != 0) {
// Preview is basically enabled
this.preview.disabled = (length <= 0);
}
if (this.labels.nullsave) {
if (length > 0) {
this.save.value = this.labels.save;
} else {
this.save.value = this.labels.nullsave;
}
}
if (this.revert) {
this.revert.disabled =
(text == this.original_text || this.textarea.value == this.original_text);
}
return true;
}
}; // end LAPI.Edit
} // end if (guard)
// </syntaxhighlight>