lib/editor/htmlarea/htmlarea_bak.php

   1 <?php
   2     include("../../config.php");
   3
   4     $lastmodified = filemtime("htmlarea.php");
   5     $lifetime = 1800;
   6
   7     header("Content-type: application/x-javascript");  // Correct MIME type
   8     header("Last-Modified: " . gmdate("D, d M Y H:i:s", $lastmodified) . " GMT");
   9     header("Expires: " . gmdate("D, d M Y H:i:s", time() + $lifetime) . " GMT");
  10     header("Cache-control: max_age = $lifetime");
  11     header("Pragma: ");
  12
  13     $lang = current_language();
  14
  15     if (empty($lang)) {
  16         $lang = "en";
  17     }
  18
  19     $strheading = get_string("heading", "editor");
  20     $strnormal = get_string("normal", "editor");
  21     $straddress = get_string("address", "editor");
  22     $strpreformatted = get_string("preformatted", "editor");
  23 ?>
  24
  25 // htmlArea v3.0 - Copyright (c) 2002, 2003 interactivetools.com, inc.
  26 // This copyright notice MUST stay intact for use (see license.txt).
  27 //
  28 // Portions (c) dynarch.com, 2003-2004
  29 //
  30 // A free WYSIWYG editor replacement for <textarea> fields.
  31 // For full source code and docs, visit http://www.interactivetools.com/
  32 //
  33 // Version 3.0 developed by Mihai Bazon.
  34 //   http://dynarch.com/mishoo
  35 //
  36 // $Id$
  37
  38 if (typeof _editor_url == "string") {
  39     // Leave exactly one backslash at the end of _editor_url
  40     _editor_url = _editor_url.replace(/\x2f*$/, '/');
  41 } else {
  42     //alert("WARNING: _editor_url is not set!  You should set this variable to the editor files path; it should preferably be an absolute path, like in '/htmlarea', but it can be relative if you prefer.  Further we will try to load the editor files correctly but we'll probably fail.");
  43     _editor_url = '<?php print ($CFG->wwwroot); ?>/lib/editor/';
  44 }
  45
  46 // make sure we have a language
  47 if (typeof _editor_lang == "string") {
  48     _editor_lang = "en"; // should always be english in moodle.
  49 } else {
  50     _editor_lang = "en";
  51 }
  52
  53 // Creates a new HTMLArea object.  Tries to replace the textarea with the given
  54 // ID with it.
  55 function HTMLArea(textarea, config) {
  56     if (HTMLArea.checkSupportedBrowser()) {
  57         if (typeof config == "undefined") {
  58             this.config = new HTMLArea.Config();
  59         } else {
  60             this.config = config;
  61         }
  62         this._htmlArea = null;
  63         this._textArea = textarea;
  64         this._editMode = "wysiwyg";
  65         this.plugins = {};
  66         this._timerToolbar = null;
  67         this._timerUndo = null;
  68         this._undoQueue = new Array(this.config.undoSteps);
  69         this._undoPos = -1;
  70         this._customUndo = true;
  71         this._mdoc = document; // cache the document, we need it in plugins
  72         this.doctype = '';
  73     }
  74 };
  75
  76 // load some scripts
  77 (function() {
  78     var scripts = HTMLArea._scripts = [ _editor_url + "htmlarea.js",
  79                         _editor_url + "dialog.js",
  80                         _editor_url + "popupwin.js",
  81                         _editor_url + "lang/" + _editor_lang + ".js" ];
  82     var head = document.getElementsByTagName("head")[0];
  83     // start from 1, htmlarea.js is already loaded
  84     for (var i = 1; i < scripts.length; ++i) {
  85         var script = document.createElement("script");
  86         script.src = scripts[i];
  87         head.appendChild(script);
  88     }
  89 })();
  90
  91 // cache some regexps
  92 HTMLArea.RE_tagName = /(<\/|<)\s*([^ \t\n>]+)/ig;
  93 HTMLArea.RE_doctype = /(<!doctype((.|\n)*?)>)\n?/i;
  94 HTMLArea.RE_head    = /<head>((.|\n)*?)<\/head>/i;
  95 HTMLArea.RE_body    = /<body>((.|\n)*?)<\/body>/i;
  96
  97 HTMLArea.Config = function () {
  98     this.version = "3.0";
  99
 100     this.width = "auto";
 101     this.height = "auto";
 102
 103     // enable creation of a status bar?
 104     this.statusBar = true;
 105
 106     // maximum size of the undo queue
 107     this.undoSteps = 20;
 108
 109     // the time interval at which undo samples are taken
 110     this.undoTimeout = 500; // 1/2 sec.
 111
 112     // the next parameter specifies whether the toolbar should be included
 113     // in the size or not.
 114     this.sizeIncludesToolbar = true;
 115
 116     // if true then HTMLArea will retrieve the full HTML, starting with the
 117     // <HTML> tag.
 118     this.fullPage = false;
 119
 120     // style included in the iframe document
 121     this.pageStyle = "body { background-color: #fff; font-family: 'Times New Roman', Times; }";
 122
 123     // set to true if you want Word code to be cleaned upon Paste
 124     this.killWordOnPaste = true;
 125
 126     // BaseURL included in the iframe document
 127     this.baseURL = document.baseURI || document.URL;
 128     if (this.baseURL && this.baseURL.match(/(.*)\/([^\/]+)/))
 129         this.baseURL = RegExp.$1 + "/";
 130
 131     // URL-s
 132     this.imgURL = "images/";
 133     this.popupURL = "popups/";
 134
 135     /** CUSTOMIZING THE TOOLBAR
 136      * -------------------------
 137      *
 138      * It is recommended that you customize the toolbar contents in an
 139      * external file (i.e. the one calling HTMLArea) and leave this one
 140      * unchanged.  That's because when we (InteractiveTools.com) release a
 141      * new official version, it's less likely that you will have problems
 142      * upgrading HTMLArea.
 143      */
 144     this.toolbar = [
 145         [ "fontname", "space",
 146           "fontsize", "space",
 147           "formatblock", "space",
 148           "bold", "italic", "underline", "strikethrough", "separator",
 149           "subscript", "superscript", "separator",
 150           "copy", "cut", "paste","clean", "separator", "undo", "redo" ],
 151
 152         [ "justifyleft", "justifycenter", "justifyright", "justifyfull", "separator",
 153           "lefttoright", "righttoleft", "separator",
 154           "insertorderedlist", "insertunorderedlist", "outdent", "indent", "separator",
 155           "forecolor", "hilitecolor", "separator",
 156           "inserthorizontalrule", "createlink", "unlink", "insertimage", "inserttable",
 157           "insertsmile", "insertchar", "separator", "htmlmode", "separator", "popupeditor" ]
 158     ];
 159
 160     this.fontname = {
 161         "Arial":       'arial,helvetica,sans-serif',
 162         "Courier New":     'courier new,courier,monospace',
 163         "Georgia":     'georgia,times new roman,times,serif',
 164         "Tahoma":      'tahoma,arial,helvetica,sans-serif',
 165         "Times New Roman": 'times new roman,times,serif',
 166         "Verdana":     'verdana,arial,helvetica,sans-serif',
 167         "impact":      'impact',
 168         "WingDings":       'wingdings'
 169     };
 170
 171     this.fontsize = {
 172         "1 (8 pt)":  "1",
 173         "2 (10 pt)": "2",
 174         "3 (12 pt)": "3",
 175         "4 (14 pt)": "4",
 176         "5 (18 pt)": "5",
 177         "6 (24 pt)": "6",
 178         "7 (36 pt)": "7"
 179     };
 180
 181     this.formatblock = {
 182         "<?php echo $strheading ?> 1": "h1",
 183         "<?php echo $strheading ?> 2": "h2",
 184         "<?php echo $strheading ?> 3": "h3",
 185         "<?php echo $strheading ?> 4": "h4",
 186         "<?php echo $strheading ?> 5": "h5",
 187         "<?php echo $strheading ?> 6": "h6",
 188         "<?php echo $strnormal ?>": "p",
 189         "<?php echo $straddress ?>": "address",
 190         "<?php echo $strpreformatted ?>": "pre"
 191     };
 192
 193     this.customSelects = {};
 194
 195     function cut_copy_paste(e, cmd, obj) {
 196             e.execCommand(cmd);
 197     };
 198
 199     // ADDING CUSTOM BUTTONS: please read below!
 200     // format of the btnList elements is "ID: [ ToolTip, Icon, Enabled in text mode?, ACTION ]"
 201     //    - ID: unique ID for the button.  If the button calls document.execCommand
 202     //      it's wise to give it the same name as the called command.
 203     //    - ACTION: function that gets called when the button is clicked.
 204     //              it has the following prototype:
 205     //                 function(editor, buttonName)
 206     //              - editor is the HTMLArea object that triggered the call
 207     //              - buttonName is the ID of the clicked button
 208     //              These 2 parameters makes it possible for you to use the same
 209     //              handler for more HTMLArea objects or for more different buttons.
 210     //    - ToolTip: default tooltip, for cases when it is not defined in the -lang- file (HTMLArea.I18N)
 211     //    - Icon: path to an icon image file for the button (TODO: use one image for all buttons!)
 212     //    - Enabled in text mode: if false the button gets disabled for text-only mode; otherwise enabled all the time.
 213     this.btnList = {
 214         bold: [ "Bold", "ed_format_bold.gif", false, function(e) {e.execCommand("bold");} ],
 215         italic: [ "Italic", "ed_format_italic.gif", false, function(e) {e.execCommand("italic");} ],
 216         underline: [ "Underline", "ed_format_underline.gif", false, function(e) {e.execCommand("underline");} ],
 217         strikethrough: [ "Strikethrough", "ed_format_strike.gif", false, function(e) {e.execCommand("strikethrough");} ],
 218         subscript: [ "Subscript", "ed_format_sub.gif", false, function(e) {e.execCommand("subscript");} ],
 219         superscript: [ "Superscript", "ed_format_sup.gif", false, function(e) {e.execCommand("superscript");} ],
 220         justifyleft: [ "Justify Left", "ed_align_left.gif", false, function(e) {e.execCommand("justifyleft");} ],
 221         justifycenter: [ "Justify Center", "ed_align_center.gif", false, function(e) {e.execCommand("justifycenter");} ],
 222         justifyright: [ "Justify Right", "ed_align_right.gif", false, function(e) {e.execCommand("justifyright");} ],
 223         justifyfull: [ "Justify Full", "ed_align_justify.gif", false, function(e) {e.execCommand("justifyfull");} ],
 224         insertorderedlist: [ "Ordered List", "ed_list_num.gif", false, function(e) {e.execCommand("insertorderedlist");} ],
 225         insertunorderedlist: [ "Bulleted List", "ed_list_bullet.gif", false, function(e) {e.execCommand("insertunorderedlist");} ],
 226         outdent: [ "Decrease Indent", "ed_indent_less.gif", false, function(e) {e.execCommand("outdent");} ],
 227         indent: [ "Increase Indent", "ed_indent_more.gif", false, function(e) {e.execCommand("indent");} ],
 228         forecolor: [ "Font Color", "ed_color_fg.gif", false, function(e) {e.execCommand("forecolor");} ],
 229         hilitecolor: [ "Background Color", "ed_color_bg.gif", false, function(e) {e.execCommand("hilitecolor");} ],
 230         inserthorizontalrule: [ "Horizontal Rule", "ed_hr.gif", false, function(e) {e.execCommand("inserthorizontalrule");} ],
 231         createlink: [ "Insert Web Link", "ed_link.gif", false, function(e) {e.execCommand("createlink", true);} ],
 232         unlink: [ "Remove Link", "ed_unlink.gif", false, function(e) {e.execCommand("unlink");} ],
 233         insertimage: [ "Insert/Modify Image", "ed_image.gif", false, function(e) {e.execCommand("insertimage");} ],
 234         inserttable: [ "Insert Table", "insert_table.gif", false, function(e) {e.execCommand("inserttable");} ],
 235         htmlmode: [ "Toggle HTML Source", "ed_html.gif", true, function(e) {e.execCommand("htmlmode");} ],
 236         popupeditor: [ "Enlarge Editor", "fullscreen_maximize.gif", true, function(e) {e.execCommand("popupeditor");} ],
 237         about: [ "About this editor", "ed_about.gif", true, function(e) {e.execCommand("about");} ],
 238         showhelp: [ "Help using editor", "ed_help.gif", true, function(e) {e.execCommand("showhelp");} ],
 239         undo: [ "Undoes your last action", "ed_undo.gif", false, function(e) {e.execCommand("undo");} ],
 240         redo: [ "Redoes your last action", "ed_redo.gif", false, function(e) {e.execCommand("redo");} ],
 241         cut: [ "Cut selection", "ed_cut.gif", false, cut_copy_paste ],
 242         copy: [ "Copy selection", "ed_copy.gif", false, cut_copy_paste ],
 243         paste: [ "Paste from clipboard", "ed_paste.gif", false, cut_copy_paste ],
 244         clean: [ "Clean Word HTML", "ed_wordclean.gif", false, function(e) {e.execCommand("killword"); }],
 245         lefttoright: [ "Direction left to right", "ed_left_to_right.gif", false, function(e) {e.execCommand("lefttoright");} ],
 246         righttoleft: [ "Direction right to left", "ed_right_to_left.gif", false, function(e) {e.execCommand("righttoleft");} ],
 247         insertsmile: ["Insert Smiley", "em.icon.smile.gif", false, function(e) {e.execCommand("insertsmile");} ],
 248         insertchar: [ "Insert Char", "icon_ins_char.gif", false, function(e) {e.execCommand("insertchar");} ]
 249     };
 250     /* ADDING CUSTOM BUTTONS
 251      * ---------------------
 252      *
 253      * It is recommended that you add the custom buttons in an external
 254      * file and leave this one unchanged.  That's because when we
 255      * (InteractiveTools.com) release a new official version, it's less
 256      * likely that you will have problems upgrading HTMLArea.
 257      *
 258      * Example on how to add a custom button when you construct the HTMLArea:
 259      *
 260      *   var editor = new HTMLArea("your_text_area_id");
 261      *   var cfg = editor.config; // this is the default configuration
 262      *   cfg.btnList["my-hilite"] =
 263      *  [ function(editor) { editor.surroundHTML('<span style="background:yellow">', '</span>'); }, // action
 264      *    "Highlight selection", // tooltip
 265      *    "my_hilite.gif", // image
 266      *    false // disabled in text mode
 267      *  ];
 268      *   cfg.toolbar.push(["linebreak", "my-hilite"]); // add the new button to the toolbar
 269      *
 270      * An alternate (also more convenient and recommended) way to
 271      * accomplish this is to use the registerButton function below.
 272      */
 273     // initialize tooltips from the I18N module and generate correct image path
 274     for (var i in this.btnList) {
 275         var btn = this.btnList[i];
 276         btn[1] = _editor_url + this.imgURL + btn[1];
 277         if (typeof HTMLArea.I18N.tooltips[i] != "undefined") {
 278             btn[0] = HTMLArea.I18N.tooltips[i];
 279         }
 280     }
 281 };
 282
 283 /** Helper function: register a new button with the configuration.  It can be
 284  * called with all 5 arguments, or with only one (first one).  When called with
 285  * only one argument it must be an object with the following properties: id,
 286  * tooltip, image, textMode, action.  Examples:
 287  *
 288  * 1. config.registerButton("my-hilite", "Hilite text", "my-hilite.gif", false, function(editor) {...});
 289  * 2. config.registerButton({
 290  *      id       : "my-hilite",      // the ID of your button
 291  *      tooltip  : "Hilite text",    // the tooltip
 292  *      image    : "my-hilite.gif",  // image to be displayed in the toolbar
 293  *      textMode : false,            // disabled in text mode
 294  *      action   : function(editor) { // called when the button is clicked
 295  *                   editor.surroundHTML('<span class="hilite">', '</span>');
 296  *                 },
 297  *      context  : "p"               // will be disabled if outside a <p> element
 298  *    });
 299  */
 300 HTMLArea.Config.prototype.registerButton = function(id, tooltip, image, textMode, action, context) {
 301     var the_id;
 302     if (typeof id == "string") {
 303         the_id = id;
 304     } else if (typeof id == "object") {
 305         the_id = id.id;
 306     } else {
 307         alert("ERROR [HTMLArea.Config::registerButton]:\ninvalid arguments");
 308         return false;
 309     }
 310     // check for existing id
 311     if (typeof this.customSelects[the_id] != "undefined") {
 312         // alert("WARNING [HTMLArea.Config::registerDropdown]:\nA dropdown with the same ID already exists.");
 313     }
 314     if (typeof this.btnList[the_id] != "undefined") {
 315         // alert("WARNING [HTMLArea.Config::registerDropdown]:\nA button with the same ID already exists.");
 316     }
 317     switch (typeof id) {
 318         case "string": this.btnList[id] = [ tooltip, image, textMode, action, context ]; break;
 319         case "object": this.btnList[id.id] = [ id.tooltip, id.image, id.textMode, id.action, id.context ]; break;
 320     }
 321 };
 322
 323 /** The following helper function registers a dropdown box with the editor
 324  * configuration.  You still have to add it to the toolbar, same as with the
 325  * buttons.  Call it like this:
 326  *
 327  * FIXME: add example
 328  */
 329 HTMLArea.Config.prototype.registerDropdown = function(object) {
 330     // check for existing id
 331     if (typeof this.customSelects[object.id] != "undefined") {
 332         // alert("WARNING [HTMLArea.Config::registerDropdown]:\nA dropdown with the same ID already exists.");
 333     }
 334     if (typeof this.btnList[object.id] != "undefined") {
 335         // alert("WARNING [HTMLArea.Config::registerDropdown]:\nA button with the same ID already exists.");
 336     }
 337     this.customSelects[object.id] = object;
 338 };
 339
 340 /** Call this function to remove some buttons/drop-down boxes from the toolbar.
 341  * Pass as the only parameter a string containing button/drop-down names
 342  * delimited by spaces.  Note that the string should also begin with a space
 343  * and end with a space.  Example:
 344  *
 345  *   config.hideSomeButtons(" fontname fontsize textindicator ");
 346  *
 347  * It's useful because it's easier to remove stuff from the defaul toolbar than
 348  * create a brand new toolbar ;-)
 349  */
 350 HTMLArea.Config.prototype.hideSomeButtons = function(remove) {
 351     var toolbar = this.toolbar;
 352     for (var i in toolbar) {
 353         var line = toolbar[i];
 354         for (var j = line.length; --j >= 0; ) {
 355             if (remove.indexOf(" " + line[j] + " ") >= 0) {
 356                 var len = 1;
 357                 if (/separator|space/.test(line[j + 1])) {
 358                     len = 2;
 359                 }
 360                 line.splice(j, len);
 361             }
 362         }
 363     }
 364 };
 365
 366 /** Helper function: replace all TEXTAREA-s in the document with HTMLArea-s. */
 367 HTMLArea.replaceAll = function(config) {
 368     var tas = document.getElementsByTagName("textarea");
 369     for (var i = tas.length; i > 0; (new HTMLArea(tas[--i], config)).generate());
 370 };
 371
 372 /** Helper function: replaces the TEXTAREA with the given ID with HTMLArea. */
 373 HTMLArea.replace = function(id, config) {
 374     var ta = HTMLArea.getElementById("textarea", id);
 375     return ta ? (new HTMLArea(ta, config)).generate() : null;
 376 };
 377
 378 // Creates the toolbar and appends it to the _htmlarea
 379 HTMLArea.prototype._createToolbar = function () {
 380     var editor = this;  // to access this in nested functions
 381
 382     var toolbar = document.createElement("div");
 383     this._toolbar = toolbar;
 384     toolbar.className = "toolbar";
 385     toolbar.unselectable = "1";
 386     var tb_row = null;
 387     var tb_objects = new Object();
 388     this._toolbarObjects = tb_objects;
 389
 390     // creates a new line in the toolbar
 391     function newLine() {
 392         var table = document.createElement("table");
 393         table.border = "0px";
 394         table.cellSpacing = "0px";
 395         table.cellPadding = "0px";
 396         toolbar.appendChild(table);
 397         // TBODY is required for IE, otherwise you don't see anything
 398         // in the TABLE.
 399         var tb_body = document.createElement("tbody");
 400         table.appendChild(tb_body);
 401         tb_row = document.createElement("tr");
 402         tb_body.appendChild(tb_row);
 403     }; // END of function: newLine
 404     // init first line
 405     newLine();
 406
 407     // updates the state of a toolbar element.  This function is member of
 408     // a toolbar element object (unnamed objects created by createButton or
 409     // createSelect functions below).
 410     function setButtonStatus(id, newval) {
 411         var oldval = this[id];
 412         var el = this.element;
 413         if (oldval != newval) {
 414             switch (id) {
 415                 case "enabled":
 416                 if (newval) {
 417                     HTMLArea._removeClass(el, "buttonDisabled");
 418                     el.disabled = false;
 419                 } else {
 420                     HTMLArea._addClass(el, "buttonDisabled");
 421                     el.disabled = true;
 422                 }
 423                 break;
 424                 case "active":
 425                 if (newval) {
 426                     HTMLArea._addClass(el, "buttonPressed");
 427                 } else {
 428                     HTMLArea._removeClass(el, "buttonPressed");
 429                 }
 430                 break;
 431             }
 432             this[id] = newval;
 433         }
 434     }; // END of function: setButtonStatus
 435
 436     // this function will handle creation of combo boxes.  Receives as
 437     // parameter the name of a button as defined in the toolBar config.
 438     // This function is called from createButton, above, if the given "txt"
 439     // doesn't match a button.
 440     function createSelect(txt) {
 441         var options = null;
 442         var el = null;
 443         var cmd = null;
 444         var customSelects = editor.config.customSelects;
 445         var context = null;
 446         switch (txt) {
 447             case "fontsize":
 448             case "fontname":
 449             case "formatblock":
 450             // the following line retrieves the correct
 451             // configuration option because the variable name
 452             // inside the Config object is named the same as the
 453             // button/select in the toolbar.  For instance, if txt
 454             // == "formatblock" we retrieve config.formatblock (or
 455             // a different way to write it in JS is
 456             // config["formatblock"].
 457             options = editor.config[txt];
 458             cmd = txt;
 459             break;
 460             default:
 461             // try to fetch it from the list of registered selects
 462             cmd = txt;
 463             var dropdown = customSelects[cmd];
 464             if (typeof dropdown != "undefined") {
 465                 options = dropdown.options;
 466                 context = dropdown.context;
 467             } else {
 468                 alert("ERROR [createSelect]:\nCan't find the requested dropdown definition");
 469             }
 470             break;
 471         }
 472         if (options) {
 473             el = document.createElement("select");
 474             var obj = {
 475                 name    : txt, // field name
 476                 element : el,   // the UI element (SELECT)
 477                 enabled : true, // is it enabled?
 478                 text    : false, // enabled in text mode?
 479                 cmd : cmd, // command ID
 480                 state   : setButtonStatus, // for changing state
 481                 context : context
 482             };
 483             tb_objects[txt] = obj;
 484             for (var i in options) {
 485                 var op = document.createElement("option");
 486                 op.appendChild(document.createTextNode(i));
 487                 op.value = options[i];
 488                 el.appendChild(op);
 489             }
 490             HTMLArea._addEvent(el, "change", function () {
 491                 editor._comboSelected(el, txt);
 492             });
 493         }
 494         return el;
 495     }; // END of function: createSelect
 496
 497     // appends a new button to toolbar
 498     function createButton(txt) {
 499         // the element that will be created
 500         var el = null;
 501         var btn = null;
 502         switch (txt) {
 503             case "separator":
 504             el = document.createElement("div");
 505             el.className = "separator";
 506             break;
 507             case "space":
 508             el = document.createElement("div");
 509             el.className = "space";
 510             break;
 511             case "linebreak":
 512             newLine();
 513             return false;
 514             case "textindicator":
 515             el = document.createElement("div");
 516             el.appendChild(document.createTextNode("A"));
 517             el.className = "indicator";
 518             el.title = HTMLArea.I18N.tooltips.textindicator;
 519             var obj = {
 520                 name    : txt, // the button name (i.e. 'bold')
 521                 element : el, // the UI element (DIV)
 522                 enabled : true, // is it enabled?
 523                 active  : false, // is it pressed?
 524                 text    : false, // enabled in text mode?
 525                 cmd : "textindicator", // the command ID
 526                 state   : setButtonStatus // for changing state
 527             };
 528             tb_objects[txt] = obj;
 529             break;
 530             default:
 531             btn = editor.config.btnList[txt];
 532         }
 533         if (!el && btn) {
 534             el = document.createElement("div");
 535             el.title = btn[0];
 536             el.className = "button";
 537             // let's just pretend we have a button object, and
 538             // assign all the needed information to it.
 539             var obj = {
 540                 name    : txt, // the button name (i.e. 'bold')
 541                 element : el, // the UI element (DIV)
 542                 enabled : true, // is it enabled?
 543                 active  : false, // is it pressed?
 544                 text    : btn[2], // enabled in text mode?
 545                 cmd : btn[3], // the command ID
 546                 state   : setButtonStatus, // for changing state
 547                 context : btn[4] || null // enabled in a certain context?
 548             };
 549             tb_objects[txt] = obj;
 550             // handlers to emulate nice flat toolbar buttons
 551             HTMLArea._addEvent(el, "mouseover", function () {
 552                 if (obj.enabled) {
 553                     HTMLArea._addClass(el, "buttonHover");
 554                 }
 555             });
 556             HTMLArea._addEvent(el, "mouseout", function () {
 557                 if (obj.enabled) with (HTMLArea) {
 558                     _removeClass(el, "buttonHover");
 559                     _removeClass(el, "buttonActive");
 560                     (obj.active) && _addClass(el, "buttonPressed");
 561                 }
 562             });
 563             HTMLArea._addEvent(el, "mousedown", function (ev) {
 564                 if (obj.enabled) with (HTMLArea) {
 565                     _addClass(el, "buttonActive");
 566                     _removeClass(el, "buttonPressed");
 567                     _stopEvent(is_ie ? window.event : ev);
 568                 }
 569             });
 570             // when clicked, do the following:
 571             HTMLArea._addEvent(el, "click", function (ev) {
 572                 if (obj.enabled) with (HTMLArea) {
 573                     _removeClass(el, "buttonActive");
 574                     _removeClass(el, "buttonHover");
 575                     obj.cmd(editor, obj.name, obj);
 576                     _stopEvent(is_ie ? window.event : ev);
 577                 }
 578             });
 579             var img = document.createElement("img");
 580             img.src = btn[1];
 581             img.style.width = "18px";
 582             img.style.height = "18px";
 583             el.appendChild(img);
 584         } else if (!el) {
 585             el = createSelect(txt);
 586         }
 587         if (el) {
 588             var tb_cell = document.createElement("td");
 589             tb_row.appendChild(tb_cell);
 590             tb_cell.appendChild(el);
 591         } else {
 592             alert("FIXME: Unknown toolbar item: " + txt);
 593         }
 594         return el;
 595     };
 596
 597     var first = true;
 598     for (var i in this.config.toolbar) {
 599         if (!first) {
 600             createButton("linebreak");
 601         } else {
 602             first = false;
 603         }
 604         var group = this.config.toolbar[i];
 605         for (var j in group) {
 606             var code = group[j];
 607             if (/^([IT])\[(.*?)\]/.test(code)) {
 608                 // special case, create text label
 609                 var l7ed = RegExp.$1 == "I"; // localized?
 610                 var label = RegExp.$2;
 611                 if (l7ed) {
 612                     label = HTMLArea.I18N.custom[label];
 613                 }
 614                 var tb_cell = document.createElement("td");
 615                 tb_row.appendChild(tb_cell);
 616                 tb_cell.className = "label";
 617                 tb_cell.innerHTML = label;
 618             } else {
 619                 createButton(code);
 620             }
 621         }
 622     }
 623
 624     this._htmlArea.appendChild(toolbar);
 625 };
 626
 627 HTMLArea.prototype._createStatusBar = function() {
 628     var statusbar = document.createElement("div");
 629     statusbar.className = "statusBar";
 630     this._htmlArea.appendChild(statusbar);
 631     this._statusBar = statusbar;
 632     // statusbar.appendChild(document.createTextNode(HTMLArea.I18N.msg["Path"] + ": "));
 633     // creates a holder for the path view
 634     div = document.createElement("span");
 635     div.className = "statusBarTree";
 636     div.innerHTML = HTMLArea.I18N.msg["Path"] + ": ";
 637     this._statusBarTree = div;
 638     this._statusBar.appendChild(div);
 639     if (!this.config.statusBar) {
 640         // disable it...
 641         statusbar.style.display = "none";
 642     }
 643 };
 644
 645 // Creates the HTMLArea object and replaces the textarea with it.
 646 HTMLArea.prototype.generate = function () {
 647     var editor = this;  // we'll need "this" in some nested functions
 648     // get the textarea
 649     var textarea = this._textArea;
 650     if (typeof textarea == "string") {
 651         // it's not element but ID
 652         this._textArea = textarea = HTMLArea.getElementById("textarea", textarea);
 653     }
 654     this._ta_size = {
 655         w: textarea.offsetWidth,
 656         h: textarea.offsetHeight
 657     };
 658     textarea.style.display = "none";
 659
 660     // create the editor framework
 661     var htmlarea = document.createElement("div");
 662     htmlarea.className = "htmlarea";
 663     this._htmlArea = htmlarea;
 664
 665     // insert the editor before the textarea.
 666     textarea.parentNode.insertBefore(htmlarea, textarea);
 667
 668     if (textarea.form) {
 669         // we have a form, on submit get the HTMLArea content and
 670         // update original textarea.
 671         var f = textarea.form;
 672         if (typeof f.onsubmit == "function") {
 673             var funcref = f.onsubmit;
 674             if (typeof f.__msh_prevOnSubmit == "undefined") {
 675                 f.__msh_prevOnSubmit = [];
 676             }
 677             f.__msh_prevOnSubmit.push(funcref);
 678         }
 679         f.onsubmit = function() {
 680             editor._textArea.value = editor.getHTML();
 681             var a = this.__msh_prevOnSubmit;
 682             // call previous submit methods if they were there.
 683             if (typeof a != "undefined") {
 684                 for (var i in a) {
 685                     a[i]();
 686                 }
 687             }
 688         };
 689     }
 690
 691     // add a handler for the "back/forward" case -- on body.unload we save
 692     // the HTML content into the original textarea.
 693     window.onunload = function() {
 694         editor._textArea.value = editor.getHTML();
 695     };
 696
 697     // creates & appends the toolbar
 698     this._createToolbar();
 699
 700     // create the IFRAME
 701     var iframe = document.createElement("iframe");
 702
 703     if (HTMLArea.is_ie) {  // http://moodle.org/mod/forum/discuss.php?d=8555
 704         // tricky! set src to local url to turn off SSL security alert
 705         iframe.src = _editor_url + this.config.popupURL+"blank.html";
 706     }
 707
 708     htmlarea.appendChild(iframe);
 709
 710     this._iframe = iframe;
 711
 712     // creates & appends the status bar, if the case
 713     this._createStatusBar();
 714
 715     // remove the default border as it keeps us from computing correctly
 716     // the sizes.  (somebody tell me why doesn't this work in IE)
 717
 718     if (!HTMLArea.is_ie) {
 719         iframe.style.borderWidth = "1px";
 720     // iframe.frameBorder = "1";
 721     // iframe.marginHeight = "0";
 722     // iframe.marginWidth = "0";
 723     }
 724
 725     // size the IFRAME according to user's prefs or initial textarea
 726     var height = (this.config.height == "auto" ? (this._ta_size.h + "px") : this.config.height);
 727     height = parseInt(height);
 728     var width = (this.config.width == "auto" ? (this._ta_size.w + 50 + "px") : this.config.width);
 729     width = parseInt(width);
 730
 731     if (!HTMLArea.is_ie) {
 732         height -= 2;
 733         width -= 2;
 734     }
 735
 736     iframe.style.width = width + "px";
 737     if (this.config.sizeIncludesToolbar) {
 738         // substract toolbar height
 739         height -= this._toolbar.offsetHeight;
 740         height -= this._statusBar.offsetHeight;
 741     }
 742     if (height < 0) {
 743         height = 0;
 744     }
 745     iframe.style.height = height + "px";
 746
 747     // the editor including the toolbar now have the same size as the
 748     // original textarea.. which means that we need to reduce that a bit.
 749     textarea.style.width = iframe.style.width;
 750     textarea.style.height = iframe.style.height;
 751
 752     // IMPORTANT: we have to allow Mozilla a short time to recognize the
 753     // new frame.  Otherwise we get a stupid exception.
 754     function initIframe() {
 755         var doc = editor._iframe.contentWindow.document;
 756         if (!doc) {
 757             // Try again..
 758             // FIXME: don't know what else to do here.  Normally
 759             // we'll never reach this point.
 760             if (HTMLArea.is_gecko) {
 761                 setTimeout(initIframe, 100);
 762                 return false;
 763             } else {
 764                 alert("ERROR: IFRAME can't be initialized.");
 765             }
 766         }
 767         if (HTMLArea.is_gecko) {
 768             // enable editable mode for Mozilla
 769             doc.designMode = "on";
 770         }
 771         editor._doc = doc;
 772         if (!editor.config.fullPage) {
 773             doc.open();
 774             var html = "<html>\n";
 775             html += "<head>\n";
 776             if (editor.config.baseURL)
 777                 html += '<base href="' + editor.config.baseURL + '" />';
 778             html += "<style>" + editor.config.pageStyle + " td { border: 1px dotted gray; }</style>\n";
 779             html += "</head>\n";
 780             html += "<body>\n";
 781             html += editor._textArea.value;
 782             html += "</body>\n";
 783             html += "</html>";
 784             doc.write(html);
 785             doc.close();
 786         } else {
 787             var html = editor._textArea.value;
 788             if (html.match(HTMLArea.RE_doctype)) {
 789                 editor.setDoctype(RegExp.$1);
 790                 html = html.replace(HTMLArea.RE_doctype, "");
 791             }
 792             doc.open();
 793             doc.write(html);
 794             doc.close();
 795         }
 796
 797         if (HTMLArea.is_ie) {
 798             // enable editable mode for IE.  For some reason this
 799             // doesn't work if done in the same place as for Gecko
 800             // (above).
 801             doc.body.contentEditable = true;
 802         }
 803
 804         editor.focusEditor();
 805         // intercept some events; for updating the toolbar & keyboard handlers
 806         HTMLArea._addEvents
 807             (doc, ["keydown", "keypress", "mousedown", "mouseup", "drag"],
 808              function (event) {
 809                  return editor._editorEvent(HTMLArea.is_ie ? editor._iframe.contentWindow.event : event);
 810              });
 811
 812         // check if any plugins have registered refresh handlers
 813         for (var i in editor.plugins) {
 814             var plugin = editor.plugins[i].instance;
 815             if (typeof plugin.onGenerate == "function")
 816                 plugin.onGenerate();
 817         }
 818
 819         setTimeout(function() {
 820         editor.updateToolbar();
 821         }, 250);
 822
 823         if (typeof editor.onGenerate == "function")
 824             editor.onGenerate();
 825     };
 826     setTimeout(initIframe, 100);
 827 };
 828
 829 // Switches editor mode; parameter can be "textmode" or "wysiwyg".  If no
 830 // parameter was passed this function toggles between modes.
 831 HTMLArea.prototype.setMode = function(mode) {
 832     if (typeof mode == "undefined") {
 833         mode = ((this._editMode == "textmode") ? "wysiwyg" : "textmode");
 834     }
 835     switch (mode) {
 836         case "textmode":
 837         this._textArea.value = this.getHTML();
 838         this._iframe.style.display = "none";
 839         this._textArea.style.display = "block";
 840         if (this.config.statusBar) {
 841             this._statusBar.innerHTML = HTMLArea.I18N.msg["TEXT_MODE"];
 842         }
 843         break;
 844         case "wysiwyg":
 845         if (HTMLArea.is_gecko) {
 846             // disable design mode before changing innerHTML
 847             try {
 848             this._doc.designMode = "off";
 849             } catch(e) {};
 850         }
 851         if (!this.config.fullPage)
 852             this._doc.body.innerHTML = this.getHTML();
 853         else
 854             this.setFullHTML(this.getHTML());
 855         this._iframe.style.display = "block";
 856         this._textArea.style.display = "none";
 857         if (HTMLArea.is_gecko) {
 858             // we need to refresh that info for Moz-1.3a
 859             try {
 860             this._doc.designMode = "on";
 861             //this._doc.focus();
 862             } catch(e) {};
 863         }
 864         if (this.config.statusBar) {
 865             this._statusBar.innerHTML = '';
 866             this._statusBar.appendChild(document.createTextNode(HTMLArea.I18N.msg["Path"] + ": "));
 867             this._statusBar.appendChild(this._statusBarTree);
 868         }
 869         break;
 870         default:
 871         alert("Mode <" + mode + "> not defined!");
 872         return false;
 873     }
 874     this._editMode = mode;
 875     this.focusEditor();
 876 };
 877
 878 HTMLArea.prototype.setFullHTML = function(html) {
 879     var save_multiline = RegExp.multiline;
 880     RegExp.multiline = true;
 881     if (html.match(HTMLArea.RE_doctype)) {
 882         this.setDoctype(RegExp.$1);
 883         html = html.replace(HTMLArea.RE_doctype, "");
 884     }
 885     RegExp.multiline = save_multiline;
 886     if (!HTMLArea.is_ie) {
 887         if (html.match(HTMLArea.RE_head))
 888             this._doc.getElementsByTagName("head")[0].innerHTML = RegExp.$1;
 889         if (html.match(HTMLArea.RE_body))
 890             this._doc.getElementsByTagName("body")[0].innerHTML = RegExp.$1;
 891     } else {
 892         var html_re = /<html>((.|\n)*?)<\/html>/i;
 893         html = html.replace(html_re, "$1");
 894         this._doc.open();
 895         this._doc.write(html);
 896         this._doc.close();
 897         this._doc.body.contentEditable = true;
 898         return true;
 899     }
 900 };
 901
 902 /***************************************************
 903  *  Category: PLUGINS
 904  ***************************************************/
 905
 906 // this is the variant of the function above where the plugin arguments are
 907 // already packed in an array.  Externally, it should be only used in the
 908 // full-screen editor code, in order to initialize plugins with the same
 909 // parameters as in the opener window.
 910 HTMLArea.prototype.registerPlugin2 = function(plugin, args) {
 911     if (typeof plugin == "string")
 912         plugin = eval(plugin);
 913     var obj = new plugin(this, args);
 914     if (obj) {
 915         var clone = {};
 916         var info = plugin._pluginInfo;
 917         for (var i in info)
 918             clone[i] = info[i];
 919         clone.instance = obj;
 920         clone.args = args;
 921         this.plugins[plugin._pluginInfo.name] = clone;
 922     } else
 923         alert("Can't register plugin " + plugin.toString() + ".");
 924 };
 925
 926 // Create the specified plugin and register it with this HTMLArea
 927 HTMLArea.prototype.registerPlugin = function() {
 928     var plugin = arguments[0];
 929     var args = [];
 930     for (var i = 1; i < arguments.length; ++i)
 931         args.push(arguments[i]);
 932     this.registerPlugin2(plugin, args);
 933 };
 934
 935 // static function that loads the required plugin and lang file, based on the
 936 // language loaded already for HTMLArea.  You better make sure that the plugin
 937 // _has_ that language, otherwise shit might happen ;-)
 938 HTMLArea.loadPlugin = function(pluginName) {
 939     var dir = _editor_url + "plugins/" + pluginName;
 940     var plugin = pluginName.replace(/([a-z])([A-Z])([a-z])/g,
 941                     function (str, l1, l2, l3) {
 942                         return l1 + "-" + l2.toLowerCase() + l3;
 943                     }).toLowerCase() + ".js";
 944     var plugin_file = dir + "/" + plugin;
 945     var plugin_lang = dir + "/lang/" + HTMLArea.I18N.lang + ".js";
 946     HTMLArea._scripts.push(plugin_file, plugin_lang);
 947     document.write("<script type='text/javascript' src='" + plugin_file + "'></script>");
 948     document.write("<script type='text/javascript' src='" + plugin_lang + "'></script>");
 949 };
 950
 951 HTMLArea.loadStyle = function(style, plugin) {
 952     var url = _editor_url || '';
 953     if (typeof plugin != "undefined") {
 954         url += "plugins/" + plugin + "/";
 955     }
 956     url += style;
 957     document.write("<style type='text/css'>@import url(" + url + ");</style>");
 958 };
 959 HTMLArea.loadStyle("htmlarea.css");
 960
 961 /***************************************************
 962  *  Category: EDITOR UTILITIES
 963  ***************************************************/
 964
 965 // The following function is a slight variation of the word cleaner code posted
 966 // by Weeezl (user @ InteractiveTools forums).
 967 HTMLArea.prototype._wordClean = function() {
 968     var D = this.getInnerHTML();
 969     if (D.indexOf("class=Mso") >= 0 || D.indexOf("mso") >= 0 || D.indexOf("Mso") >= 0) {
 970
 971         // make one line
 972         D = D.replace(/\r\n/g, ' ').
 973             replace(/\n/g, ' ').
 974             replace(/\r/g, ' ').
 975             replace(/\&nbsp\;/g,' ');
 976
 977         // keep tags, strip attributes
 978         D = D.replace(/ class=[^\s|>]*/gi,'').
 979             //replace(/<p [^>]*TEXT-ALIGN: justify[^>]*>/gi,'<p align="justify">').
 980             replace(/ style=\"[^>]*\"/gi,'').
 981             replace(/ align=[^\s|>]*/gi,'');
 982
 983         //clean up tags
 984         D = D.replace(/<b [^>]*>/gi,'<b>').
 985             replace(/<i [^>]*>/gi,'<i>').
 986             replace(/<li [^>]*>/gi,'<li>').
 987             replace(/<ul [^>]*>/gi,'<ul>');
 988
 989         // replace outdated tags
 990         D = D.replace(/<b>/gi,'<strong>').
 991             replace(/<\/b>/gi,'</strong>');
 992
 993         // mozilla doesn't like <em> tags
 994         D = D.replace(/<em>/gi,'<i>').
 995             replace(/<\/em>/gi,'</i>');
 996
 997         // kill unwanted tags
 998         D = D.replace(/<\?xml:[^>]*>/g, '').       // Word xml
 999             replace(/<\/?st1:[^>]*>/g,'').     // Word SmartTags
1000             replace(/<\/?[a-z]\:[^>]*>/g,'').  // All other funny Word non-HTML stuff
1001             replace(/<\/?font[^>]*>/gi,'').    // Disable if you want to keep font formatting
1002             replace(/<\/?span[^>]*>/gi,' ').
1003             replace(/<\/?div[^>]*>/gi,' ').
1004             replace(/<\/?pre[^>]*>/gi,' ').
1005             replace(/<(\/?)(h[1-6]+)[^>]*>/gi,'<$1$2>');
1006
1007         //remove empty tags
1008         //D = D.replace(/<strong><\/strong>/gi,'').
1009         //replace(/<i><\/i>/gi,'').
1010         //replace(/<P[^>]*><\/P>/gi,'');
1011
1012         // nuke double tags
1013         oldlen = D.length + 1;
1014         while(oldlen > D.length) {
1015             oldlen = D.length;
1016             // join us now and free the tags, we'll be free hackers, we'll be free... ;-)
1017             D = D.replace(/<([a-z][a-z]*)> *<\/\1>/gi,' ').
1018                 replace(/<([a-z][a-z]*)> *<([a-z][^>]*)> *<\/\1>/gi,'<$2>');
1019         }
1020         D = D.replace(/<([a-z][a-z]*)><\1>/gi,'<$1>').
1021             replace(/<\/([a-z][a-z]*)><\/\1>/gi,'<\/$1>');
1022
1023         // nuke double spaces
1024         D = D.replace(/  */gi,' ');
1025
1026         this.setHTML(D);
1027         this.updateToolbar();
1028     }
1029 };
1030
1031 HTMLArea.prototype.forceRedraw = function() {
1032     this._doc.body.style.visibility = "hidden";
1033     this._doc.body.style.visibility = "visible";
1034     // this._doc.body.innerHTML = this.getInnerHTML();
1035 };
1036
1037 // focuses the iframe window.  returns a reference to the editor document.
1038 HTMLArea.prototype.focusEditor = function() {
1039     switch (this._editMode) {
1040         case "wysiwyg" : this._iframe.contentWindow.focus(); break;
1041         case "textmode": this._textArea.focus(); break;
1042         default    : alert("ERROR: mode " + this._editMode + " is not defined");
1043     }
1044     return this._doc;
1045 };
1046
1047 // takes a snapshot of the current text (for undo)
1048 HTMLArea.prototype._undoTakeSnapshot = function() {
1049     ++this._undoPos;
1050     if (this._undoPos >= this.config.undoSteps) {
1051         // remove the first element
1052         this._undoQueue.shift();
1053         --this._undoPos;
1054     }
1055     // use the fasted method (getInnerHTML);
1056     var take = true;
1057     var txt = this.getInnerHTML();
1058     if (this._undoPos > 0)
1059         take = (this._undoQueue[this._undoPos - 1] != txt);
1060     if (take) {
1061         this._undoQueue[this._undoPos] = txt;
1062     } else {
1063         this._undoPos--;
1064     }
1065 };
1066
1067 HTMLArea.prototype.undo = function() {
1068     if (this._undoPos > 0) {
1069         var txt = this._undoQueue[--this._undoPos];
1070         if (txt) this.setHTML(txt);
1071         else ++this._undoPos;
1072     }
1073 };
1074
1075 HTMLArea.prototype.redo = function() {
1076     if (this._undoPos < this._undoQueue.length - 1) {
1077         var txt = this._undoQueue[++this._undoPos];
1078         if (txt) this.setHTML(txt);
1079         else --this._undoPos;
1080     }
1081 };
1082
1083 // updates enabled/disable/active state of the toolbar elements
1084 HTMLArea.prototype.updateToolbar = function(noStatus) {
1085     var doc = this._doc;
1086     var text = (this._editMode == "textmode");
1087     var ancestors = null;
1088     if (!text) {
1089         ancestors = this.getAllAncestors();
1090         if (this.config.statusBar && !noStatus) {
1091             this._statusBarTree.innerHTML = HTMLArea.I18N.msg["Path"] + ": "; // clear
1092             for (var i = ancestors.length; --i >= 0;) {
1093                 var el = ancestors[i];
1094                 if (!el) {
1095                     // hell knows why we get here; this
1096                     // could be a classic example of why
1097                     // it's good to check for conditions
1098                     // that are impossible to happen ;-)
1099                     continue;
1100                 }
1101                 var a = document.createElement("a");
1102                 a.href = "#";
1103                 a.el = el;
1104                 a.editor = this;
1105                 a.onclick = function() {
1106                     this.blur();
1107                     this.editor.selectNodeContents(this.el);
1108                     this.editor.updateToolbar(true);
1109                     return false;
1110                 };
1111                 a.oncontextmenu = function() {
1112                     // TODO: add context menu here
1113                     this.blur();
1114                     var info = "Inline style:\n\n";
1115                     info += this.el.style.cssText.split(/;\s*/).join(";\n");
1116                     alert(info);
1117                     return false;
1118                 };
1119                 var txt = el.tagName.toLowerCase();
1120                 a.title = el.style.cssText;
1121                 if (el.id) {
1122                     txt += "#" + el.id;
1123                 }
1124                 if (el.className) {
1125                     txt += "." + el.className;
1126                 }
1127                 a.appendChild(document.createTextNode(txt));
1128                 this._statusBarTree.appendChild(a);
1129                 if (i != 0) {
1130                     this._statusBarTree.appendChild(document.createTextNode(String.fromCharCode(0xbb)));
1131                 }
1132             }
1133         }
1134     }
1135     for (var i in this._toolbarObjects) {
1136         var btn = this._toolbarObjects[i];
1137         var cmd = i;
1138         var inContext = true;
1139         if (btn.context && !text) {
1140             inContext = false;
1141             var context = btn.context;
1142             var attrs = [];
1143             if (/(.*)\[(.*?)\]/.test(context)) {
1144                 context = RegExp.$1;
1145                 attrs = RegExp.$2.split(",");
1146             }
1147             context = context.toLowerCase();
1148             var match = (context == "*");
1149             for (var k in ancestors) {
1150                 if (!ancestors[k]) {
1151                     // the impossible really happens.
1152                     continue;
1153                 }
1154                 if (match || (ancestors[k].tagName.toLowerCase() == context)) {
1155                     inContext = true;
1156                     for (var ka in attrs) {
1157                         if (!eval("ancestors[k]." + attrs[ka])) {
1158                             inContext = false;
1159                             break;
1160                         }
1161                     }
1162                     if (inContext) {
1163                         break;
1164                     }
1165                 }
1166             }
1167         }
1168         btn.state("enabled", (!text || btn.text) && inContext);
1169         if (typeof cmd == "function") {
1170             continue;
1171         }
1172         // look-it-up in the custom dropdown boxes
1173         var dropdown = this.config.customSelects[cmd];
1174         if ((!text || btn.text) && (typeof dropdown != "undefined")) {
1175             dropdown.refresh(this);
1176             continue;
1177         }
1178         switch (cmd) {
1179             case "fontname":
1180             case "fontsize":
1181             case "formatblock":
1182             if (!text) try {
1183                 var value = ("" + doc.queryCommandValue(cmd)).toLowerCase();
1184                 if (!value) {
1185                     // FIXME: what do we do here?
1186                     break;
1187                 }
1188                 // HACK -- retrieve the config option for this
1189                 // combo box.  We rely on the fact that the
1190                 // variable in config has the same name as
1191                 // button name in the toolbar.
1192                 var options = this.config[cmd];
1193                 var k = 0;
1194                 // btn.element.selectedIndex = 0;
1195                 for (var j in options) {
1196                     // FIXME: the following line is scary.
1197                     if ((j.toLowerCase() == value) ||
1198                         (options[j].substr(0, value.length).toLowerCase() == value)) {
1199                         btn.element.selectedIndex = k;
1200                         break;
1201                     }
1202                     ++k;
1203                 }
1204             } catch(e) {};
1205             break;
1206             case "textindicator":
1207             if (!text) {
1208                 try {with (btn.element.style) {
1209                     backgroundColor = HTMLArea._makeColor(
1210                         doc.queryCommandValue(HTMLArea.is_ie ? "backcolor" : "hilitecolor"));
1211                     if (/transparent/i.test(backgroundColor)) {
1212                         // Mozilla
1213                         backgroundColor = HTMLArea._makeColor(doc.queryCommandValue("backcolor"));
1214                     }
1215                     color = HTMLArea._makeColor(doc.queryCommandValue("forecolor"));
1216                     fontFamily = doc.queryCommandValue("fontname");
1217                     fontWeight = doc.queryCommandState("bold") ? "bold" : "normal";
1218                     fontStyle = doc.queryCommandState("italic") ? "italic" : "normal";
1219                 }} catch (e) {
1220                     // alert(e + "\n\n" + cmd);
1221                 }
1222             }
1223             break;
1224             case "htmlmode": btn.state("active", text); break;
1225             case "lefttoright":
1226             case "righttoleft":
1227             var el = this.getParentElement();
1228             while (el && !HTMLArea.isBlockElement(el))
1229                 el = el.parentNode;
1230             if (el)
1231                 btn.state("active", (el.style.direction == ((cmd == "righttoleft") ? "rtl" : "ltr")));
1232             break;
1233             default:
1234             try {
1235                 btn.state("active", (!text && doc.queryCommandState(cmd)));
1236             } catch (e) {}
1237         }
1238     }
1239     // take undo snapshots
1240     if (this._customUndo && !this._timerUndo) {
1241         this._undoTakeSnapshot();
1242         var editor = this;
1243         this._timerUndo = setTimeout(function() {
1244             editor._timerUndo = null;
1245         }, this.config.undoTimeout);
1246     }
1247     // check if any plugins have registered refresh handlers
1248     for (var i in this.plugins) {
1249         var plugin = this.plugins[i].instance;
1250         if (typeof plugin.onUpdateToolbar == "function")
1251             plugin.onUpdateToolbar();
1252     }
1253 };
1254
1255 /** Returns a node after which we can insert other nodes, in the current
1256  * selection.  The selection is removed.  It splits a text node, if needed.
1257  */
1258 HTMLArea.prototype.insertNodeAtSelection = function(toBeInserted) {
1259     if (!HTMLArea.is_ie) {
1260         var sel = this._getSelection();
1261         var range = this._createRange(sel);
1262         // remove the current selection
1263         sel.removeAllRanges();
1264         range.deleteContents();
1265         var node = range.startContainer;
1266         var pos = range.startOffset;
1267         switch (node.nodeType) {
1268             case 3: // Node.TEXT_NODE
1269             // we have to split it at the caret position.
1270             if (toBeInserted.nodeType == 3) {
1271                 // do optimized insertion
1272                 node.insertData(pos, toBeInserted.data);
1273                 range = this._createRange();
1274                 range.setEnd(node, pos + toBeInserted.length);
1275                 range.setStart(node, pos + toBeInserted.length);
1276                 sel.addRange(range);
1277             } else {
1278                 node = node.splitText(pos);
1279                 var selnode = toBeInserted;
1280                 if (toBeInserted.nodeType == 11 /* Node.DOCUMENT_FRAGMENT_NODE */) {
1281                     selnode = selnode.firstChild;
1282                 }
1283                 node.parentNode.insertBefore(toBeInserted, node);
1284                 this.selectNodeContents(selnode);
1285                 this.updateToolbar();
1286             }
1287             break;
1288             case 1: // Node.ELEMENT_NODE
1289             var selnode = toBeInserted;
1290             if (toBeInserted.nodeType == 11 /* Node.DOCUMENT_FRAGMENT_NODE */) {
1291                 selnode = selnode.firstChild;
1292             }
1293             node.insertBefore(toBeInserted, node.childNodes[pos]);
1294             this.selectNodeContents(selnode);
1295             this.updateToolbar();
1296             break;
1297         }
1298     } else {
1299         return null;    // this function not yet used for IE <FIXME>
1300     }
1301 };
1302
1303 // Returns the deepest node that contains both endpoints of the selection.
1304 HTMLArea.prototype.getParentElement = function() {
1305     var sel = this._getSelection();
1306     var range = this._createRange(sel);
1307     if (HTMLArea.is_ie) {
1308         switch (sel.type) {
1309             case "Text":
1310             case "None":
1311             // It seems that even for selection of type "None",
1312             // there _is_ a parent element and it's value is not
1313             // only correct, but very important to us.  MSIE is
1314             // certainly the buggiest browser in the world and I
1315             // wonder, God, how can Earth stand it?
1316             return range.parentElement();
1317             case "Control":
1318             return range.item(0);
1319             default:
1320             return this._doc.body;
1321         }
1322     } else try {
1323         var p = range.commonAncestorContainer;
1324         if (!range.collapsed && range.startContainer == range.endContainer &&
1325             range.startOffset - range.endOffset <= 1 && range.startContainer.hasChildNodes())
1326             p = range.startContainer.childNodes[range.startOffset];
1327         /*
1328         alert(range.startContainer + ":" + range.startOffset + "\n" +
1329               range.endContainer + ":" + range.endOffset);
1330         */
1331         while (p.nodeType == 3) {
1332             p = p.parentNode;
1333         }
1334         return p;
1335     } catch (e) {
1336         return null;
1337     }
1338 };
1339
1340 // Returns an array with all the ancestor nodes of the selection.
1341 HTMLArea.prototype.getAllAncestors = function() {
1342     var p = this.getParentElement();
1343     var a = [];
1344     while (p && (p.nodeType == 1) && (p.tagName.toLowerCase() != 'body')) {
1345         a.push(p);
1346         p = p.parentNode;
1347     }
1348     a.push(this._doc.body);
1349     return a;
1350 };
1351
1352 // Selects the contents inside the given node
1353 HTMLArea.prototype.selectNodeContents = function(node, pos) {
1354     this.focusEditor();
1355     this.forceRedraw();
1356     var range;
1357     var collapsed = (typeof pos != "undefined");
1358     if (HTMLArea.is_ie) {
1359         range = this._doc.body.createTextRange();
1360         range.moveToElementText(node);
1361         (collapsed) && range.collapse(pos);
1362         range.select();
1363     } else {
1364         var sel = this._getSelection();
1365         range = this._doc.createRange();
1366         range.selectNodeContents(node);
1367         (collapsed) && range.collapse(pos);
1368         sel.removeAllRanges();
1369         sel.addRange(range);
1370     }
1371 };
1372
1373 /** Call this function to insert HTML code at the current position.  It deletes
1374  * the selection, if any.
1375  */
1376 HTMLArea.prototype.insertHTML = function(html) {
1377     var sel = this._getSelection();
1378     var range = this._createRange(sel);
1379     if (HTMLArea.is_ie) {
1380         range.pasteHTML(html);
1381     } else {
1382         // construct a new document fragment with the given HTML
1383         var fragment = this._doc.createDocumentFragment();
1384         var div = this._doc.createElement("div");
1385         div.innerHTML = html;
1386         while (div.firstChild) {
1387             // the following call also removes the node from div
1388             fragment.appendChild(div.firstChild);
1389         }
1390         // this also removes the selection
1391         var node = this.insertNodeAtSelection(fragment);
1392     }
1393 };
1394
1395 /**
1396  *  Call this function to surround the existing HTML code in the selection with
1397  *  your tags.  FIXME: buggy!  This function will be deprecated "soon".
1398  */
1399 HTMLArea.prototype.surroundHTML = function(startTag, endTag) {
1400     var html = this.getSelectedHTML();
1401     // the following also deletes the selection
1402     this.insertHTML(startTag + html + endTag);
1403 };
1404
1405 /// Retrieve the selected block
1406 HTMLArea.prototype.getSelectedHTML = function() {
1407     var sel = this._getSelection();
1408     var range = this._createRange(sel);
1409     var existing = null;
1410     if (HTMLArea.is_ie) {
1411         existing = range.htmlText;
1412     } else {
1413         existing = HTMLArea.getHTML(range.cloneContents(), false, this);
1414     }
1415     return existing;
1416 };
1417
1418 /// Return true if we have some selection
1419 HTMLArea.prototype.hasSelectedText = function() {
1420     // FIXME: come _on_ mishoo, you can do better than this ;-)
1421     return this.getSelectedHTML() != '';
1422 };
1423
1424 HTMLArea.prototype._createLink = function(link) {
1425     var editor = this;
1426     var outparam = null;
1427     if (typeof link == "undefined") {
1428         link = this.getParentElement();
1429         if (link && !/^a$/i.test(link.tagName))
1430             link = null;
1431     }
1432     if (link) outparam = {
1433         f_href   : HTMLArea.is_ie ? editor.stripBaseURL(link.href) : link.getAttribute("href"),
1434         f_title  : link.title,
1435         f_target : link.target
1436     };
1437     this._popupDialog("link_std.php?id=<?php echo $id; ?>", function(param) {
1438         if (!param)
1439             return false;
1440         var a = link;
1441         if (!a) {
1442             editor._doc.execCommand("createlink", false, param.f_href);
1443             a = editor.getParentElement();
1444             var sel = editor._getSelection();
1445             var range = editor._createRange(sel);
1446         //    if (!HTMLArea.is_ie) {           /// Removed by PJ and Martin, Moodle bug #1455
1447         //        a = range.startContainer;
1448         //        if (!/^a$/i.test(a.tagName))
1449         //            a = a.nextSibling;
1450         //    }
1451         } else a.href = param.f_href.trim();
1452         if (!/^a$/i.test(a.tagName))
1453             return false;
1454         a.target = param.f_target.trim();
1455         a.title = param.f_title.trim();
1456         editor.selectNodeContents(a);
1457         editor.updateToolbar();
1458     }, outparam);
1459 };
1460
1461 // Called when the user clicks on "InsertImage" button.  If an image is already
1462 // there, it will just modify it's properties.
1463 HTMLArea.prototype._insertImage = function(image) {
1464     var editor = this;  // for nested functions
1465     var outparam = null;
1466     if (typeof image == "undefined") {
1467         image = this.getParentElement();
1468         if (image && !/^img$/i.test(image.tagName))
1469             image = null;
1470     }
1471     if (image) outparam = {
1472         f_url    : HTMLArea.is_ie ? editor.stripBaseURL(image.src) : image.getAttribute("src"),
1473         f_alt    : image.alt,
1474         f_border : image.border,
1475         f_align  : image.align,
1476         f_vert   : image.vspace,
1477         f_horiz  : image.hspace,
1478         f_width  : image.width,
1479         f_height : image.height
1480     };
1481     this._popupDialog("<?php
1482     if (has_capability('moodle/course:managefiles', get_context_instance(CONTEXT_COURSE, $id))) {
1483         echo "insert_image.php?id=$id";
1484     } else {
1485         echo "insert_image_std.php?id=$id";
1486     }?>", function(param) {
1487         if (!param) {   // user must have pressed Cancel
1488             return false;
1489         }
1490         var img = image;
1491         if (!img) {
1492         var sel = editor._getSelection();
1493         var range = editor._createRange(sel);
1494             editor._doc.execCommand("insertimage", false, param.f_url);
1495         if (HTMLArea.is_ie) {
1496             img = range.parentElement();
1497             // wonder if this works...
1498             if (img.tagName.toLowerCase() != "img") {
1499                 img = img.previousSibling;
1500             }
1501         } else {
1502             img = range.startContainer.previousSibling;
1503         }
1504         } else {
1505             img.src = param.f_url;
1506         }
1507         for (field in param) {
1508             var value = param[field];
1509             switch (field) {
1510                 case "f_alt"    : img.alt    = value; break;
1511                 case "f_border" : img.border = parseInt(value || "0"); break;
1512                 case "f_align"  : img.align  = value; break;
1513                 case "f_vert"   : img.vspace = parseInt(value || "0"); break;
1514                 case "f_horiz"  : img.hspace = parseInt(value || "0"); break;
1515                 case "f_width"  :
1516                     if(value != 0) {
1517                         img.width = parseInt(value);
1518                     } else {
1519                         break;
1520                     }
1521                     break;
1522                 case "f_height"  :
1523                     if(value != 0) {
1524                         img.height = parseInt(value);
1525                     } else {
1526                         break;
1527                     }
1528                     break;
1529             }
1530         }
1531     }, outparam);
1532 };
1533
1534 // Called when the user clicks the Insert Table button
1535 HTMLArea.prototype._insertTable = function() {
1536     var sel = this._getSelection();
1537     var range = this._createRange(sel);
1538     var editor = this;  // for nested functions
1539     this._popupDialog("insert_table.php", function(param) {
1540         if (!param) {   // user must have pressed Cancel
1541             return false;
1542         }
1543         var doc = editor._doc;
1544         // create the table element
1545         var table = doc.createElement("table");
1546         // assign the given arguments
1547         for (var field in param) {
1548             var value = param[field];
1549             if (!value) {
1550                 continue;
1551             }
1552             switch (field) {
1553                 case "f_width"   : table.width = value + param["f_unit"]; break;
1554                 case "f_align"   : table.align   = value; break;
1555                 case "f_border"  : table.border  = parseInt(value); break;
1556                 case "f_spacing" : table.cellspacing = parseInt(value); break;
1557                 case "f_padding" : table.cellpadding = parseInt(value); break;
1558             }
1559         }
1560         var tbody = doc.createElement("tbody");
1561         table.appendChild(tbody);
1562         for (var i = 0; i < param["f_rows"]; ++i) {
1563             var tr = doc.createElement("tr");
1564             tbody.appendChild(tr);
1565             for (var j = 0; j < param["f_cols"]; ++j) {
1566                 var td = doc.createElement("td");
1567                 /// Moodle hack
1568                 if(param["f_unit"] == "px") {
1569                     tdwidth = Math.round(table.width / param["f_cols"]);
1570                 } else {
1571                     tdwidth = Math.round(100 / param["f_cols"]);
1572                 }
1573                 td.setAttribute("width",tdwidth + param["f_unit"]);
1574                 td.setAttribute("valign","top");
1575                 /// Moodle hack -ends
1576                 tr.appendChild(td);
1577                 // Mozilla likes to see something inside the cell.
1578                 (HTMLArea.is_gecko) && td.appendChild(doc.createElement("br"));
1579             }
1580         }
1581         if (HTMLArea.is_ie) {
1582             range.pasteHTML(table.outerHTML);
1583         } else {
1584             // insert the table
1585             editor.insertNodeAtSelection(table);
1586         }
1587         return true;
1588     }, null);
1589 };
1590 /******************************************************************
1591 * Moodle hack - insertSmile
1592 ******************************************************************/
1593 /// since method insertimage doesn't work the same way in mozilla
1594 /// as it does in IE, let's go around this for both browsers.
1595 HTMLArea.prototype._insertSmile = function() {
1596     var sel = this._getSelection();
1597     var range = this._createRange(sel);
1598     var editor = this;  // for nested functions
1599     this._popupDialog("dlg_ins_smile.php", function(imgString) {
1600         if(!imgString) {
1601             return false;
1602         }
1603         if (HTMLArea.is_ie) {
1604             range.pasteHTML(imgString);
1605         } else {
1606             // insert the table
1607             editor.insertHTML(imgString);
1608         }
1609         return true;
1610     }, null);
1611 };
1612
1613 HTMLArea.prototype._insertChar = function() {
1614     var sel = this._getSelection();
1615     var range = this._createRange(sel);
1616     var editor = this;  // for nested functions
1617     this._popupDialog("dlg_ins_char.php", function(sChar) {
1618         if(!sChar) {
1619             return false;
1620         }
1621         if (HTMLArea.is_ie) {
1622             range.pasteHTML(sChar);
1623         } else {
1624             // insert the table
1625             editor.insertHTML(sChar);
1626         }
1627         return true;
1628     }, null);
1629 };
1630
1631 HTMLArea.prototype._removelink = function() {
1632     var editor = this;
1633     link = this.getParentElement();
1634     editor.selectNodeContents(link);
1635
1636     this._doc.execCommand("unlink", false, null);
1637     this.focusEditor();
1638 };
1639 /************************************************************************
1640 * Moodle hack's ends
1641 ************************************************************************/
1642 /***************************************************
1643  *  Category: EVENT HANDLERS
1644  ***************************************************/
1645
1646 // el is reference to the SELECT object
1647 // txt is the name of the select field, as in config.toolbar
1648 HTMLArea.prototype._comboSelected = function(el, txt) {
1649     this.focusEditor();
1650     var value = el.options[el.selectedIndex].value;
1651     switch (txt) {
1652         case "fontname":
1653         case "fontsize": this.execCommand(txt, false, value); break;
1654         case "formatblock":
1655         (HTMLArea.is_ie) && (value = "<" + value + ">");
1656         this.execCommand(txt, false, value);
1657         break;
1658         default:
1659         // try to look it up in the registered dropdowns
1660         var dropdown = this.config.customSelects[txt];
1661         if (typeof dropdown != "undefined") {
1662             dropdown.action(this);
1663         } else {
1664             alert("FIXME: combo box " + txt + " not implemented");
1665         }
1666     }
1667 };
1668
1669 // the execCommand function (intercepts some commands and replaces them with
1670 // our own implementation)
1671 HTMLArea.prototype.execCommand = function(cmdID, UI, param) {
1672     var editor = this;  // for nested functions
1673     this.focusEditor();
1674     cmdID = cmdID.toLowerCase();
1675     switch (cmdID) {
1676         case "htmlmode" : this.setMode(); break;
1677         case "hilitecolor":
1678         (HTMLArea.is_ie) && (cmdID = "backcolor");
1679         case "forecolor":
1680         this._popupDialog("select_color.php", function(color) {
1681             if (color) { // selection not canceled
1682                 editor._doc.execCommand(cmdID, false, "#" + color);
1683             }
1684         }, HTMLArea._colorToRgb(this._doc.queryCommandValue(cmdID)));
1685         break;
1686         case "createlink":
1687         this._createLink();
1688         break;
1689         case "unlink": this._removelink(); break;
1690         case "popupeditor":
1691         // this object will be passed to the newly opened window
1692         HTMLArea._object = this;
1693         if (HTMLArea.is_ie) {
1694             //if (confirm(HTMLArea.I18N.msg["IE-sucks-full-screen"]))
1695             {
1696                 window.open(this.popupURL("fullscreen.php?id=<?php print($id);?>"), "ha_fullscreen",
1697                     "toolbar=no,location=no,directories=no,status=no,menubar=no," +
1698                         "scrollbars=no,resizable=yes,width=800,height=600");
1699             }
1700         } else {
1701             window.open(this.popupURL("fullscreen.php?id=<?php print($id);?>"), "ha_fullscreen",
1702                     "toolbar=no,menubar=no,personalbar=no,width=800,height=600," +
1703                     "scrollbars=no,resizable=yes");
1704         }
1705         break;
1706         case "undo":
1707         case "redo":
1708         if (this._customUndo)
1709             this[cmdID]();
1710         else
1711             this._doc.execCommand(cmdID, UI, param);
1712         break;
1713         case "inserttable": this._insertTable(); break;
1714         case "insertimage": this._insertImage(); break;
1715         case "insertsmile": this._insertSmile(); break;
1716         case "insertchar": this._insertChar(); break;
1717         case "about"    : this._popupDialog("about.html", null, this); break;
1718         case "showhelp" : window.open(_editor_url + "reference.html", "ha_help"); break;
1719
1720         case "killword": this._wordClean(); break;
1721
1722         case "cut":
1723         case "copy":
1724         case "paste":
1725         try {
1726             if (this.config.killWordOnPaste)
1727                 this._wordClean();
1728             this._doc.execCommand(cmdID, UI, param);
1729         } catch (e) {
1730             if (HTMLArea.is_gecko) {
1731                 if (confirm("Unprivileged scripts cannot access Cut/Copy/Paste programatically " +
1732                         "for security reasons.  Click OK to see a technical note at mozilla.org " +
1733                         "which shows you how to allow a script to access the clipboard." +
1734                         "\n\nFor more information HOW TO enable Cut/Copy/Paste see moodle -discussion: " +
1735                         "\nhttp://moodle.org/mod/forum/discuss.php?d=5880"))
1736                     window.open("http://mozilla.org/editor/midasdemo/securityprefs.html");
1737             }
1738         }
1739         break;
1740         case "lefttoright":
1741         case "righttoleft":
1742         var dir = (cmdID == "righttoleft") ? "rtl" : "ltr";
1743         var el = this.getParentElement();
1744         while (el && !HTMLArea.isBlockElement(el))
1745             el = el.parentNode;
1746         if (el) {
1747             if (el.style.direction == dir)
1748                 el.style.direction = "";
1749             else
1750                 el.style.direction = dir;
1751         }
1752         break;
1753         default: this._doc.execCommand(cmdID, UI, param);
1754     }
1755     this.updateToolbar();
1756     return false;
1757 };
1758
1759 /** A generic event handler for things that happen in the IFRAME's document.
1760  * This function also handles key bindings. */
1761 HTMLArea.prototype._editorEvent = function(ev) {
1762     var editor = this;
1763     var keyEvent = (HTMLArea.is_ie && ev.type == "keydown") || (ev.type == "keypress");
1764     if (keyEvent) {
1765         for (var i in editor.plugins) {
1766             var plugin = editor.plugins[i].instance;
1767             if (typeof plugin.onKeyPress == "function") plugin.onKeyPress(ev);
1768         }
1769     }
1770     if (keyEvent && ev.ctrlKey && ! ev.altKey) {
1771         var sel = null;
1772         var range = null;
1773         var key = String.fromCharCode(HTMLArea.is_ie ? ev.keyCode : ev.charCode).toLowerCase();
1774         var cmd = null;
1775         var value = null;
1776         switch (key) {
1777             case 'a':
1778             if (!HTMLArea.is_ie) {
1779                 // KEY select all
1780                 sel = this._getSelection();
1781                 sel.removeAllRanges();
1782                 range = this._createRange();
1783                 range.selectNodeContents(this._doc.body);
1784                 sel.addRange(range);
1785                 HTMLArea._stopEvent(ev);
1786             }
1787             break;
1788
1789             // simple key commands follow
1790
1791             case 'b': cmd = "bold"; break;
1792             case 'i': cmd = "italic"; break;
1793             case 'u': cmd = "underline"; break;
1794             case 's': cmd = "strikethrough"; break;
1795             case 'l': cmd = "justifyleft"; break;
1796             case 'e': cmd = "justifycenter"; break;
1797             case 'r': cmd = "justifyright"; break;
1798             case 'j': cmd = "justifyfull"; break;
1799             case 'z': cmd = "undo"; break;
1800             case 'y': cmd = "redo"; break;
1801             case 'v': cmd = "paste"; break;
1802
1803             case '0': cmd = "killword"; break;
1804
1805             // headings
1806             case '1':
1807             case '2':
1808             case '3':
1809             case '4':
1810             case '5':
1811             case '6':
1812             cmd = "formatblock";
1813             value = "h" + key;
1814             if (HTMLArea.is_ie) {
1815                 value = "<" + value + ">";
1816             }
1817             break;
1818         }
1819         if (cmd) {
1820             // execute simple command
1821             this.execCommand(cmd, false, value);
1822             HTMLArea._stopEvent(ev);
1823         }
1824     }
1825     /*
1826     else if (keyEvent) {
1827         // other keys here
1828         switch (ev.keyCode) {
1829             case 13: // KEY enter
1830             // if (HTMLArea.is_ie) {
1831             this.insertHTML("<br />");
1832             HTMLArea._stopEvent(ev);
1833             // }
1834             break;
1835         }
1836     }
1837     */
1838     // update the toolbar state after some time
1839     if (editor._timerToolbar) {
1840         clearTimeout(editor._timerToolbar);
1841     }
1842     editor._timerToolbar = setTimeout(function() {
1843         editor.updateToolbar();
1844         editor._timerToolbar = null;
1845     }, 50);
1846 };
1847
1848 // retrieve the HTML
1849 HTMLArea.prototype.getHTML = function() {
1850     switch (this._editMode) {
1851         case "wysiwyg"  :
1852         if (!this.config.fullPage) {
1853             return HTMLArea.getHTML(this._doc.body, false, this);
1854         } else
1855             return this.doctype + "\n" + HTMLArea.getHTML(this._doc.documentElement, true, this);
1856         case "textmode" : return this._textArea.value;
1857         default     : alert("Mode <" + mode + "> not defined!");
1858     }
1859     return false;
1860 };
1861
1862 // retrieve the HTML (fastest version, but uses innerHTML)
1863 HTMLArea.prototype.getInnerHTML = function() {
1864     switch (this._editMode) {
1865         case "wysiwyg"  :
1866         if (!this.config.fullPage)
1867             return this._doc.body.innerHTML;
1868         else
1869             return this.doctype + "\n" + this._doc.documentElement.innerHTML;
1870         case "textmode" : return this._textArea.value;
1871         default     : alert("Mode <" + mode + "> not defined!");
1872     }
1873     return false;
1874 };
1875
1876 // completely change the HTML inside
1877 HTMLArea.prototype.setHTML = function(html) {
1878     switch (this._editMode) {
1879         case "wysiwyg"  :
1880         if (!this.config.fullPage)
1881             this._doc.body.innerHTML = html;
1882         else
1883             // this._doc.documentElement.innerHTML = html;
1884             this._doc.body.innerHTML = html;
1885         break;
1886         case "textmode" : this._textArea.value = html; break;
1887         default     : alert("Mode <" + mode + "> not defined!");
1888     }
1889     return false;
1890 };
1891
1892 // sets the given doctype (useful when config.fullPage is true)
1893 HTMLArea.prototype.setDoctype = function(doctype) {
1894     this.doctype = doctype;
1895 };
1896
1897 /***************************************************
1898  *  Category: UTILITY FUNCTIONS
1899  ***************************************************/
1900
1901 // browser identification
1902
1903 HTMLArea.agt = navigator.userAgent.toLowerCase();
1904 HTMLArea.is_ie     = ((HTMLArea.agt.indexOf("msie") != -1) && (HTMLArea.agt.indexOf("opera") == -1));
1905 HTMLArea.is_opera  = (HTMLArea.agt.indexOf("opera") != -1);
1906 HTMLArea.is_mac    = (HTMLArea.agt.indexOf("mac") != -1);
1907 HTMLArea.is_mac_ie = (HTMLArea.is_ie && HTMLArea.is_mac);
1908 HTMLArea.is_win_ie = (HTMLArea.is_ie && !HTMLArea.is_mac);
1909 HTMLArea.is_gecko  = (navigator.product == "Gecko");
1910
1911 // variable used to pass the object to the popup editor window.
1912 HTMLArea._object = null;
1913
1914 // function that returns a clone of the given object
1915 HTMLArea.cloneObject = function(obj) {
1916     var newObj = new Object;
1917
1918     // check for array objects
1919     if (obj.constructor.toString().indexOf("function Array(") == 1) {
1920         newObj = obj.constructor();
1921     }
1922
1923     // check for function objects (as usual, IE is phucked up)
1924     if (obj.constructor.toString().indexOf("function Function(") == 1) {
1925         newObj = obj; // just copy reference to it
1926     } else for (var n in obj) {
1927         var node = obj[n];
1928         if (typeof node == 'object') { newObj[n] = HTMLArea.cloneObject(node); }
1929         else                         { newObj[n] = node; }
1930     }
1931
1932     return newObj;
1933 };
1934
1935 // FIXME!!! this should return false for IE < 5.5
1936 HTMLArea.checkSupportedBrowser = function() {
1937     if (HTMLArea.is_gecko) {
1938         if (navigator.productSub < 20021201) {
1939             alert("You need at least Mozilla-1.3 Alpha.\n" +
1940                   "Sorry, your Gecko is not supported.");
1941             return false;
1942         }
1943         if (navigator.productSub < 20030210) {
1944             alert("Mozilla < 1.3 Beta is not supported!\n" +
1945                   "I'll try, though, but it might not work.");
1946         }
1947     }
1948     return HTMLArea.is_gecko || HTMLArea.is_ie;
1949 };
1950
1951 // selection & ranges
1952
1953 // returns the current selection object
1954 HTMLArea.prototype._getSelection = function() {
1955     if (HTMLArea.is_ie) {
1956         return this._doc.selection;
1957     } else {
1958         return this._iframe.contentWindow.getSelection();
1959     }
1960 };
1961
1962 // returns a range for the current selection
1963 HTMLArea.prototype._createRange = function(sel) {
1964     if (HTMLArea.is_ie) {
1965         return sel.createRange();
1966     } else {
1967         this.focusEditor();
1968         if (typeof sel != "undefined") {
1969             try {
1970             return sel.getRangeAt(0);
1971             } catch(e) {
1972                 return this._doc.createRange();
1973             }
1974         } else {
1975             return this._doc.createRange();
1976         }
1977     }
1978 };
1979
1980 // event handling
1981
1982 HTMLArea._addEvent = function(el, evname, func) {
1983     if (HTMLArea.is_ie) {
1984         el.attachEvent("on" + evname, func);
1985     } else {
1986         el.addEventListener(evname, func, true);
1987     }
1988 };
1989
1990 HTMLArea._addEvents = function(el, evs, func) {
1991     for (var i in evs) {
1992         HTMLArea._addEvent(el, evs[i], func);
1993     }
1994 };
1995
1996 HTMLArea._removeEvent = function(el, evname, func) {
1997     if (HTMLArea.is_ie) {
1998         el.detachEvent("on" + evname, func);
1999     } else {
2000         el.removeEventListener(evname, func, true);
2001     }
2002 };
2003
2004 HTMLArea._removeEvents = function(el, evs, func) {
2005     for (var i in evs) {
2006         HTMLArea._removeEvent(el, evs[i], func);
2007     }
2008 };
2009
2010 HTMLArea._stopEvent = function(ev) {
2011     if (HTMLArea.is_ie) {
2012         ev.cancelBubble = true;
2013         ev.returnValue = false;
2014     } else {
2015         ev.preventDefault();
2016         ev.stopPropagation();
2017     }
2018 };
2019
2020 HTMLArea._removeClass = function(el, className) {
2021     if (!(el && el.className)) {
2022         return;
2023     }
2024     var cls = el.className.split(" ");
2025     var ar = new Array();
2026     for (var i = cls.length; i > 0;) {
2027         if (cls[--i] != className) {
2028             ar[ar.length] = cls[i];
2029         }
2030     }
2031     el.className = ar.join(" ");
2032 };
2033
2034 HTMLArea._addClass = function(el, className) {
2035     // remove the class first, if already there
2036     HTMLArea._removeClass(el, className);
2037     el.className += " " + className;
2038 };
2039
2040 HTMLArea._hasClass = function(el, className) {
2041     if (!(el && el.className)) {
2042         return false;
2043     }
2044     var cls = el.className.split(" ");
2045     for (var i = cls.length; i > 0;) {
2046         if (cls[--i] == className) {
2047             return true;
2048         }
2049     }
2050     return false;
2051 };
2052
2053 HTMLArea.isBlockElement = function(el) {
2054     var blockTags = " body form textarea fieldset ul ol dl li div " +
2055         "p h1 h2 h3 h4 h5 h6 quote pre table thead " +
2056         "tbody tfoot tr td iframe address ";
2057     return (blockTags.indexOf(" " + el.tagName.toLowerCase() + " ") != -1);
2058 };
2059
2060 HTMLArea.needsClosingTag = function(el) {
2061     var closingTags = " head script style div span tr td tbody table em strong font a title ";
2062     return (closingTags.indexOf(" " + el.tagName.toLowerCase() + " ") != -1);
2063 };
2064
2065 // performs HTML encoding of some given string
2066 HTMLArea.htmlEncode = function(str) {
2067     // we don't need regexp for that, but.. so be it for now.
2068     str = str.replace(/&/ig, "&amp;");
2069     str = str.replace(/</ig, "&lt;");
2070     str = str.replace(/>/ig, "&gt;");
2071     str = str.replace(/\x22/ig, "&quot;");
2072     // \x22 means '"' -- we use hex reprezentation so that we don't disturb
2073     // JS compressors (well, at least mine fails.. ;)
2074     return str;
2075 };
2076
2077 // Retrieves the HTML code from the given node.  This is a replacement for
2078 // getting innerHTML, using standard DOM calls.
2079 HTMLArea.getHTML = function(root, outputRoot, editor) {
2080     var html = "";
2081     switch (root.nodeType) {
2082         case 1: // Node.ELEMENT_NODE
2083         case 11: // Node.DOCUMENT_FRAGMENT_NODE
2084         var closed;
2085         var i;
2086         var root_tag = (root.nodeType == 1) ? root.tagName.toLowerCase() : '';
2087         if (HTMLArea.is_ie && root_tag == "head") {
2088             if (outputRoot)
2089                 html += "<head>";
2090             // lowercasize
2091             var save_multiline = RegExp.multiline;
2092             RegExp.multiline = true;
2093             var txt = root.innerHTML.replace(HTMLArea.RE_tagName, function(str, p1, p2) {
2094                 return p1 + p2.toLowerCase();
2095             });
2096             RegExp.multiline = save_multiline;
2097             html += txt;
2098             if (outputRoot)
2099                 html += "</head>";
2100             break;
2101         } else if (outputRoot) {
2102             closed = (!(root.hasChildNodes() || HTMLArea.needsClosingTag(root)));
2103             html = "<" + root.tagName.toLowerCase();
2104             var attrs = root.attributes;
2105             for (i = 0; i < attrs.length; ++i) {
2106                 var a = attrs.item(i);
2107                 if (!a.specified) {
2108                     continue;
2109                 }
2110                 var name = a.nodeName.toLowerCase();
2111                 if (/_moz|contenteditable|_msh/.test(name)) {
2112                     // avoid certain attributes
2113                     continue;
2114                 }
2115                 var value;
2116                 if (name != "style") {
2117                     // IE5.5 reports 25 when cellSpacing is
2118                     // 1; other values might be doomed too.
2119                     // For this reason we extract the
2120                     // values directly from the root node.
2121                     // I'm starting to HATE JavaScript
2122                     // development.  Browser differences
2123                     // suck.
2124                     //
2125                     // Using Gecko the values of href and src are converted to absolute links
2126                     // unless we get them using nodeValue()
2127                     if (typeof root[a.nodeName] != "undefined" && name != "href" && name != "src") {
2128                         value = root[a.nodeName];
2129                     } else {
2130                         value = a.nodeValue;
2131                         // IE seems not willing to return the original values - it converts to absolute
2132                         // links using a.nodeValue, a.value, a.stringValue, root.getAttribute("href")
2133                         // So we have to strip the baseurl manually -/
2134                         if (HTMLArea.is_ie && (name == "href" || name == "src")) {
2135                             value = editor.stripBaseURL(value);
2136                         }
2137                     }
2138                 } else { // IE fails to put style in attributes list
2139                     // FIXME: cssText reported by IE is UPPERCASE
2140                     value = root.style.cssText;
2141                 }
2142                 if (/(_moz|^$)/.test(value)) {
2143                     // Mozilla reports some special tags
2144                     // here; we don't need them.
2145                     continue;
2146                 }
2147                 html += " " + name + '="' + value + '"';
2148             }
2149             html += closed ? " />" : ">";
2150         }
2151         for (i = root.firstChild; i; i = i.nextSibling) {
2152             html += HTMLArea.getHTML(i, true, editor);
2153         }
2154         if (outputRoot && !closed) {
2155             html += "</" + root.tagName.toLowerCase() + ">";
2156         }
2157         break;
2158         case 3: // Node.TEXT_NODE
2159         // If a text node is alone in an element and all spaces, replace it with an non breaking one
2160         // This partially undoes the damage done by moz, which translates '&nbsp;'s into spaces in the data element
2161         if ( !root.previousSibling && !root.nextSibling && root.data.match(/^\s*$/i) ) html = '&nbsp;';
2162         else html = HTMLArea.htmlEncode(root.data);
2163         break;
2164         case 8: // Node.COMMENT_NODE
2165         html = "<!--" + root.data + "-->";
2166         break;      // skip comments, for now.
2167     }
2168     return html;
2169 };
2170
2171 HTMLArea.prototype.stripBaseURL = function(string) {
2172     var baseurl = this.config.baseURL;
2173
2174     // IE adds the path to an anchor, converting #anchor
2175     // to path/#anchor which of course needs to be fixed
2176     var index = string.indexOf("/#")+1;
2177     if ((index > 0) && (string.indexOf(baseurl) > -1)) {
2178         return string.substr(index);
2179     }
2180     return string; // Moodle doesn't use the code below because
2181                    // Moodle likes to keep absolute links
2182
2183     // strip to last directory in case baseurl points to a file
2184     baseurl = baseurl.replace(/[^\/]+$/, '');
2185     var basere = new RegExp(baseurl);
2186     string = string.replace(basere, "");
2187
2188     // strip host-part of URL which is added by MSIE to links relative to server root
2189     baseurl = baseurl.replace(/^(https?:\/\/[^\/]+)(.*)$/, '$1');
2190     basere = new RegExp(baseurl);
2191     return string.replace(basere, "");
2192 };
2193
2194 String.prototype.trim = function() {
2195     a = this.replace(/^\s+/, '');
2196     return a.replace(/\s+$/, '');
2197 };
2198
2199 // creates a rgb-style color from a number
2200 HTMLArea._makeColor = function(v) {
2201     if (typeof v != "number") {
2202         // already in rgb (hopefully); IE doesn't get here.
2203         return v;
2204     }
2205     // IE sends number; convert to rgb.
2206     var r = v & 0xFF;
2207     var g = (v >> 8) & 0xFF;
2208     var b = (v >> 16) & 0xFF;
2209     return "rgb(" + r + "," + g + "," + b + ")";
2210 };
2211
2212 // returns hexadecimal color representation from a number or a rgb-style color.
2213 HTMLArea._colorToRgb = function(v) {
2214     if (!v)
2215         return '';
2216
2217     // returns the hex representation of one byte (2 digits)
2218     function hex(d) {
2219         return (d < 16) ? ("0" + d.toString(16)) : d.toString(16);
2220     };
2221
2222     if (typeof v == "number") {
2223         // we're talking to IE here
2224         var r = v & 0xFF;
2225         var g = (v >> 8) & 0xFF;
2226         var b = (v >> 16) & 0xFF;
2227         return "#" + hex(r) + hex(g) + hex(b);
2228     }
2229
2230     if (v.substr(0, 3) == "rgb") {
2231         // in rgb(...) form -- Mozilla
2232         var re = /rgb\s*\(\s*([0-9]+)\s*,\s*([0-9]+)\s*,\s*([0-9]+)\s*\)/;
2233         if (v.match(re)) {
2234             var r = parseInt(RegExp.$1);
2235             var g = parseInt(RegExp.$2);
2236             var b = parseInt(RegExp.$3);
2237             return "#" + hex(r) + hex(g) + hex(b);
2238         }
2239         // doesn't match RE?!  maybe uses percentages or float numbers
2240         // -- FIXME: not yet implemented.
2241         return null;
2242     }
2243
2244     if (v.substr(0, 1) == "#") {
2245         // already hex rgb (hopefully :D )
2246         return v;
2247     }
2248
2249     // if everything else fails ;)
2250     return null;
2251 };
2252
2253 // modal dialogs for Mozilla (for IE we're using the showModalDialog() call).
2254
2255 // receives an URL to the popup dialog and a function that receives one value;
2256 // this function will get called after the dialog is closed, with the return
2257 // value of the dialog.
2258 HTMLArea.prototype._popupDialog = function(url, action, init) {
2259     Dialog(this.popupURL(url), action, init);
2260 };
2261
2262 // paths
2263
2264 HTMLArea.prototype.imgURL = function(file, plugin) {
2265     if (typeof plugin == "undefined")
2266         return _editor_url + file;
2267     else
2268         return _editor_url + "plugins/" + plugin + "/img/" + file;
2269 };
2270
2271 HTMLArea.prototype.popupURL = function(file) {
2272     var url = "";
2273     if (file.match(/^plugin:\/\/(.*?)\/(.*)/)) {
2274         var plugin = RegExp.$1;
2275         var popup = RegExp.$2;
2276         if (!/\.html$/.test(popup))
2277             popup += ".html";
2278         url = _editor_url + "plugins/" + plugin + "/popups/" + popup;
2279     } else
2280         url = _editor_url + this.config.popupURL + file;
2281     return url;
2282 };
2283
2284 /**
2285  * FIX: Internet Explorer returns an item having the _name_ equal to the given
2286  * id, even if it's not having any id.  This way it can return a different form
2287  * field even if it's not a textarea.  This workarounds the problem by
2288  * specifically looking to search only elements having a certain tag name.
2289  */
2290 HTMLArea.getElementById = function(tag, id) {
2291     var el, i, objs = document.getElementsByTagName(tag);
2292     for (i = objs.length; --i >= 0 && (el = objs[i]);)
2293         if (el.id == id)
2294             return el;
2295     return null;
2296 };
2297
2298
2299
2300 // EOF
2301 // Local variables: //
2302 // c-basic-offset:8 //
2303 // indent-tabs-mode:t //
2304 // End: //