MediaWiki:Gadget-CodeEditor.js

/** * MediaWiki:Gadget-codeeditor.js * (c) 2011 Brion Vibber  * CC-BY-SA 2 (?) * * Syntax highlighting, auto-indenting code editor widget for on-wiki JS and CSS pages. * Uses embedded Ajax.org Cloud9 Editor: http://ace.ajax.org/ * * Browsers tested: * - Firefox 4.0 / Linux * - Chrome 10.0.648.204 / Linux * * Browsers tested with issues: * - Opera 11.10 / Linux: copy fails, paste sometimes crashes * - IE 8.0.6001.18702 / Win XP: some newlines mysteriously removed, corrupting data; *  insertion point keeps resetting back to the top of the page after a click (arrow keys ok) * * Known issues: * - with both classic & enhanced toolbar, toolbar buttons have no effect. *  - do we need an interface for regular actions to work on custom editors, or should it replace the toolbar too? * - something keeps trying to load a background worker thread from wrong URL, but seems to fail gracefully. * - ctrl+R and ctrl+L are taken over by the editor, which is SUPER annoying * - copy/paste not available from context menu (Firefox, Chrome on Linux -- kbd & main menu commands ok) * - libs are loaded from toolserver over HTTP; should at least check for HTTPS * - unlike the textarea in many browsers, the widget isn't automatically resizable; jquery.ui.resizable on the container should fix that * - accessibility: tab/shift-tab are overridden. is there a consistent alternative for keyboard-reliant users? * - accessibility: accesskey on the original textarea needs to be moved over or otherwise handled * - 'discard your changes?' check on tab close doesn't trigger */ (function(mw, $) {   $(function { var box = $('#wpTextbox1'); if (box.length > 0) { var matches = /\.(js|css)$/.exec(wgTitle); if (matches && (wgNamespaceNumber == 2 /* User: */ || wgNamespaceNumber == 8 /* MediaWiki: */)) { var ext = matches[1]; var map = {js: 'javascript', css: 'css'}; var lang = map[ext]; var base = 'http://toolserver.org/~brion/ace/build/src/'; var modules = {}; var load = function(path, callback) { var url = base + path; $.getScript(url, callback); };               load('ace-uncompressed.js', function {                    load('mode-' + lang + '.js', function { // Ace doesn't like replacing a textarea directly. // We'll stub this out to sit on top of it... // line-height is needed to compensate for oddity in WikiEditor extension, which zeroes the line-height on a parent container var container = $('  ').insertAfter(box); var editdiv = container.find('.editor');

box.css('display', 'none'); var resize = function { container.width(box.width) .height(box.height); };                       $(window).resize(resize); resize;

editdiv.text(box.val); var editor = ace.edit(editdiv[0]); box.closest('form').submit(function(event) {                           box.val(editor.getSession.getValue);                        }); editor.getSession.setMode(new (require("ace/mode/" + lang).Mode)); });               });            }        }    });

})(mediaWiki, jQuery);