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/**
 * EditorManager.js
 *
 * Copyright 2009, Moxiecode Systems AB
 * Released under LGPL License.
 *
 * License: http://tinymce.moxiecode.com/license
 * Contributing: http://tinymce.moxiecode.com/contributing
 */

(function(tinymce) {
	/**
	 * @class tinymce
	 */

	// Shorten names
	var each = tinymce.each, extend = tinymce.extend,
		DOM = tinymce.DOM, Event = tinymce.dom.Event,
		ThemeManager = tinymce.ThemeManager, PluginManager = tinymce.PluginManager,
		explode = tinymce.explode,
		Dispatcher = tinymce.util.Dispatcher, undefined, instanceCounter = 0;

	// Setup some URLs where the editor API is located and where the document is
	tinymce.documentBaseURL = window.location.href.replace(/[\?#].*$/, '').replace(/[\/\\][^\/]+$/, '');
	if (!/[\/\\]$/.test(tinymce.documentBaseURL))
		tinymce.documentBaseURL += '/';

	tinymce.baseURL = new tinymce.util.URI(tinymce.documentBaseURL).toAbsolute(tinymce.baseURL);

	/**
	 * Absolute baseURI for the installation path of TinyMCE.
	 *
	 * @property baseURI
	 * @type tinymce.util.URI
	 */
	tinymce.baseURI = new tinymce.util.URI(tinymce.baseURL);

	// Add before unload listener
	// This was required since IE was leaking memory if you added and removed beforeunload listeners
	// with attachEvent/detatchEvent so this only adds one listener and instances can the attach to the onBeforeUnload event
	tinymce.onBeforeUnload = new Dispatcher(tinymce);

	// Must be on window or IE will leak if the editor is placed in frame or iframe
	Event.add(window, 'beforeunload', function(e) {
		tinymce.onBeforeUnload.dispatch(tinymce, e);
	});

	/**
	 * Fires when a new editor instance is added to the tinymce collection.
	 *
	 * @event onAddEditor
	 * @param {tinymce} sender TinyMCE root class/namespace.
	 * @param {tinymce.Editor} editor Editor instance.
	 * @example
	 * tinyMCE.execCommand("mceAddControl", false, "some_textarea");
	 * tinyMCE.onAddEditor.add(function(mgr,ed) {
	 *     console.debug('A new editor is available' + ed.id);
	 * });
	 */
	tinymce.onAddEditor = new Dispatcher(tinymce);

	/**
	 * Fires when an editor instance is removed from the tinymce collection.
	 *
	 * @event onRemoveEditor
	 * @param {tinymce} sender TinyMCE root class/namespace.
	 * @param {tinymce.Editor} editor Editor instance.
	 */
	tinymce.onRemoveEditor = new Dispatcher(tinymce);

	tinymce.EditorManager = extend(tinymce, {
		/**
		 * Collection of editor instances.
		 *
		 * @property editors
		 * @type Object
		 * @example
		 * for (edId in tinyMCE.editors)
		 *     tinyMCE.editors[edId].save();
		 */
		editors : [],

		/**
		 * Collection of language pack data.
		 *
		 * @property i18n
		 * @type Object
		 */
		i18n : {},

		/**
		 * Currently active editor instance.
		 *
		 * @property activeEditor
		 * @type tinymce.Editor
		 * @example
		 * tinyMCE.activeEditor.selection.getContent();
		 * tinymce.EditorManager.activeEditor.selection.getContent();
		 */
		activeEditor : null,

		/**
		 * Initializes a set of editors. This method will create a bunch of editors based in the input.
		 *
		 * @method init
		 * @param {Object} s Settings object to be passed to each editor instance.
		 * @example
		 * // Initializes a editor using the longer method
		 * tinymce.EditorManager.init({
		 *    some_settings : 'some value'
		 * });
		 * 
		 * // Initializes a editor instance using the shorter version
		 * tinyMCE.init({
		 *    some_settings : 'some value'
		 * });
		 */
		init : function(s) {
			var t = this, pl, sl = tinymce.ScriptLoader, e, el = [], ed;

			function execCallback(se, n, s) {
				var f = se[n];

				if (!f)
					return;

				if (tinymce.is(f, 'string')) {
					s = f.replace(/\.\w+$/, '');
					s = s ? tinymce.resolve(s) : 0;
					f = tinymce.resolve(f);
				}

				return f.apply(s || this, Array.prototype.slice.call(arguments, 2));
			};

			s = extend({
				theme : "simple",
				language : "en"
			}, s);

			t.settings = s;

			// Legacy call
			Event.add(document, 'init', function() {
				var l, co;

				execCallback(s, 'onpageload');

				switch (s.mode) {
					case "exact":
						l = s.elements || '';

						if(l.length > 0) {
							each(explode(l), function(v) {
								if (DOM.get(v)) {
									ed = new tinymce.Editor(v, s);
									el.push(ed);
									ed.render(1);
								} else {
									each(document.forms, function(f) {
										each(f.elements, function(e) {
											if (e.name === v) {
												v = 'mce_editor_' + instanceCounter++;
												DOM.setAttrib(e, 'id', v);

												ed = new tinymce.Editor(v, s);
												el.push(ed);
												ed.render(1);
											}
										});
									});
								}
							});
						}
						break;

					case "textareas":
					case "specific_textareas":
						function hasClass(n, c) {
							return c.constructor === RegExp ? c.test(n.className) : DOM.hasClass(n, c);
						};

						each(DOM.select('textarea'), function(v) {
							if (s.editor_deselector && hasClass(v, s.editor_deselector))
								return;

							if (!s.editor_selector || hasClass(v, s.editor_selector)) {
								// Can we use the name
								e = DOM.get(v.name);
								if (!v.id && !e)
									v.id = v.name;

								// Generate unique name if missing or already exists
								if (!v.id || t.get(v.id))
									v.id = DOM.uniqueId();

								ed = new tinymce.Editor(v.id, s);
								el.push(ed);
								ed.render(1);
							}
						});
						break;
				}

				// Call onInit when all editors are initialized
				if (s.oninit) {
					l = co = 0;

					each(el, function(ed) {
						co++;

						if (!ed.initialized) {
							// Wait for it
							ed.onInit.add(function() {
								l++;

								// All done
								if (l == co)
									execCallback(s, 'oninit');
							});
						} else
							l++;

						// All done
						if (l == co)
							execCallback(s, 'oninit');					
					});
				}
			});
		},

		/**
		 * Returns a editor instance by id.
		 *
		 * @method get
		 * @param {String/Number} id Editor instance id or index to return.
		 * @return {tinymce.Editor} Editor instance to return.
		 * @example
		 * // Adds an onclick event to an editor by id (shorter version)
		 * tinyMCE.get('mytextbox').onClick.add(function(ed, e) {
		 *    ed.windowManager.alert('Hello world!');
		 * });
		 * 
		 * // Adds an onclick event to an editor by id (longer version)
		 * tinymce.EditorManager.get('mytextbox').onClick.add(function(ed, e) {
		 *    ed.windowManager.alert('Hello world!');
		 * });
		 */
		get : function(id) {
			if (id === undefined)
				return this.editors;

			return this.editors[id];
		},

		/**
		 * Returns a editor instance by id. This method was added for compatibility with the 2.x branch.
		 *
		 * @method getInstanceById
		 * @param {String} id Editor instance id to return.
		 * @return {tinymce.Editor} Editor instance to return.
		 * @deprecated Use get method instead.
		 * @see #get
		 */
		getInstanceById : function(id) {
			return this.get(id);
		},

		/**
		 * Adds an editor instance to the editor collection. This will also set it as the active editor.
		 *
		 * @method add
		 * @param {tinymce.Editor} editor Editor instance to add to the collection.
		 * @return {tinymce.Editor} The same instance that got passed in.
		 */
		add : function(editor) {
			var self = this, editors = self.editors;

			// Add named and index editor instance
			editors[editor.id] = editor;
			editors.push(editor);

			self._setActive(editor);
			self.onAddEditor.dispatch(self, editor);

			// #ifdef jquery

			// Patch the tinymce.Editor instance with jQuery adapter logic
			if (tinymce.adapter)
				tinymce.adapter.patchEditor(editor);

			// #endif

			return editor;
		},

		/**
		 * Removes a editor instance from the collection.
		 *
		 * @method remove
		 * @param {tinymce.Editor} e Editor instance to remove.
		 * @return {tinymce.Editor} The editor that got passed in will be return if it was found otherwise null.
		 */
		remove : function(editor) {
			var t = this, i, editors = t.editors;

			// Not in the collection
			if (!editors[editor.id])
				return null;

			delete editors[editor.id];

			for (i = 0; i < editors.length; i++) {
				if (editors[i] == editor) {
					editors.splice(i, 1);
					break;
				}
			}

			// Select another editor since the active one was removed
			if (t.activeEditor == editor)
				t._setActive(editors[0]);

			editor.destroy();
			t.onRemoveEditor.dispatch(t, editor);

			return editor;
		},

		/**
		 * Executes a specific command on the currently active editor.
		 *
		 * @method execCommand
		 * @param {String} c Command to perform for example Bold.
		 * @param {Boolean} u Optional boolean state if a UI should be presented for the command or not.
		 * @param {String} v Optional value parameter like for example an URL to a link.
		 * @return {Boolean} true/false if the command was executed or not.
		 */
		execCommand : function(c, u, v) {
			var t = this, ed = t.get(v), w;

			// Manager commands
			switch (c) {
				case "mceFocus":
					ed.focus();
					return true;

				case "mceAddEditor":
				case "mceAddControl":
					if (!t.get(v))
						new tinymce.Editor(v, t.settings).render();

					return true;

				case "mceAddFrameControl":
					w = v.window;

					// Add tinyMCE global instance and tinymce namespace to specified window
					w.tinyMCE = tinyMCE;
					w.tinymce = tinymce;

					tinymce.DOM.doc = w.document;
					tinymce.DOM.win = w;

					ed = new tinymce.Editor(v.element_id, v);
					ed.render();

					// Fix IE memory leaks
					if (tinymce.isIE) {
						function clr() {
							ed.destroy();
							w.detachEvent('onunload', clr);
							w = w.tinyMCE = w.tinymce = null; // IE leak
						};

						w.attachEvent('onunload', clr);
					}

					v.page_window = null;

					return true;

				case "mceRemoveEditor":
				case "mceRemoveControl":
					if (ed)
						ed.remove();

					return true;

				case 'mceToggleEditor':
					if (!ed) {
						t.execCommand('mceAddControl', 0, v);
						return true;
					}

					if (ed.isHidden())
						ed.show();
					else
						ed.hide();

					return true;
			}

			// Run command on active editor
			if (t.activeEditor)
				return t.activeEditor.execCommand(c, u, v);

			return false;
		},

		/**
		 * Executes a command on a specific editor by id. This method was added for compatibility with the 2.x branch.
		 *
		 * @deprecated Use the execCommand method of a editor instance instead.
		 * @method execInstanceCommand
		 * @param {String} id Editor id to perform the command on.
		 * @param {String} c Command to perform for example Bold.
		 * @param {Boolean} u Optional boolean state if a UI should be presented for the command or not.
		 * @param {String} v Optional value parameter like for example an URL to a link.
		 * @return {Boolean} true/false if the command was executed or not.
		 */
		execInstanceCommand : function(id, c, u, v) {
			var ed = this.get(id);

			if (ed)
				return ed.execCommand(c, u, v);

			return false;
		},

		/**
		 * Calls the save method on all editor instances in the collection. This can be useful when a form is to be submitted.
		 *
		 * @method triggerSave
		 * @example
		 * // Saves all contents
		 * tinyMCE.triggerSave();
		 */
		triggerSave : function() {
			each(this.editors, function(e) {
				e.save();
			});
		},

		/**
		 * Adds a language pack, this gets called by the loaded language files like en.js.
		 *
		 * @method addI18n
		 * @param {String} p Prefix for the language items. For example en.myplugin
		 * @param {Object} o Name/Value collection with items to add to the language group.
		 */
		addI18n : function(p, o) {
			var lo, i18n = this.i18n;

			if (!tinymce.is(p, 'string')) {
				each(p, function(o, lc) {
					each(o, function(o, g) {
						each(o, function(o, k) {
							if (g === 'common')
								i18n[lc + '.' + k] = o;
							else
								i18n[lc + '.' + g + '.' + k] = o;
						});
					});
				});
			} else {
				each(o, function(o, k) {
					i18n[p + '.' + k] = o;
				});
			}
		},

		// Private methods

		_setActive : function(editor) {
			this.selectedInstance = this.activeEditor = editor;
		}
	});
})(tinymce);

/**
 * Alternative name for tinymce added for 2.x compatibility.
 *
 * @member
 * @property tinyMCE
 * @type tinymce
 * @example
 * // To initialize editor instances
 * tinyMCE.init({
 *    ...
 * });
 */

/**
 * Alternative name for tinymce added for compatibility.
 *
 * @member tinymce
 * @property EditorManager
 * @type tinymce
 * @example
 * // To initialize editor instances
 * tinymce.EditorManager.get('editor');
 */