/**
* $Id: editor_plugin_src.js,v 1.1 2009-07-19 13:05:22 skodak Exp $
*
* @author Moxiecode
* @copyright Copyright © 2004-2008, Moxiecode Systems AB, All rights reserved.
*/

(function() {
	/**
	* Auto Resize
	* 
	* This plugin automatically resizes the content area to fit its content height.
	* It will retain a minimum height, which is the height of the content area when
	* it's initialized.
	*/
	tinymce.create('tinymce.plugins.AutoResizePlugin', {
		/**
		* Initializes the plugin, this will be executed after the plugin has been created.
		* This call is done before the editor instance has finished it's initialization so use the onInit event
		* of the editor instance to intercept that event.
		*
		* @param {tinymce.Editor} ed Editor instance that the plugin is initialized in.
		* @param {string} url Absolute URL to where the plugin is located.
		*/
		init : function(ed, url) {
			var t = this;

			/**
			 * This method gets executed each time the editor needs to resize.
			 */
			function resize() {
				var d = ed.getDoc(), b = d.body, de = d.documentElement, DOM = tinymce.DOM, resizeHeight = t.autoresize_min_height, myHeight;

				// Get height differently depending on the browser used
				myHeight = tinymce.isIE ? b.scrollHeight : de.offsetHeight;

				// Don't make it smaller than the minimum height
				if (myHeight > t.autoresize_min_height)
					resizeHeight = myHeight;

				// Resize content element
				DOM.setStyle(DOM.get(ed.id + '_ifr'), 'height', resizeHeight + 'px');

				// if we're throbbing, we'll re-throb to match the new size
				if (t.throbbing) {
					ed.setProgressState(false);
					ed.setProgressState(true);
				}
			};

			t.editor = ed;

			// Define minimum height
			t.autoresize_min_height = ed.getElement().offsetHeight;

			// Things to do when the editor is ready
			ed.onInit.add(function(ed, l) {
				// Show throbber until content area is resized properly
				ed.setProgressState(true);
				t.throbbing = true;

				// Hide scrollbars
				ed.getBody().style.overflowY = "hidden";
			});

			// Add appropriate listeners for resizing content area
			ed.onChange.add(resize);
			ed.onSetContent.add(resize);
			ed.onPaste.add(resize);
			ed.onKeyUp.add(resize);
			ed.onPostRender.add(resize);

			ed.onLoadContent.add(function(ed, l) {
				resize();

				// Because the content area resizes when its content CSS loads,
				// and we can't easily add a listener to its onload event,
				// we'll just trigger a resize after a short loading period
				setTimeout(function() {
					resize();

					// Disable throbber
					ed.setProgressState(false);
					t.throbbing = false;
				}, 1250);
			});

			// Register the command so that it can be invoked by using tinyMCE.activeEditor.execCommand('mceExample');
			ed.addCommand('mceAutoResize', resize);
		},

		/**
		* Returns information about the plugin as a name/value array.
		* The current keys are longname, author, authorurl, infourl and version.
		*
		* @return {Object} Name/value array containing information about the plugin.
		*/
		getInfo : function() {
			return {
				longname : 'Auto Resize',
				author : 'Moxiecode Systems AB',
				authorurl : 'http://tinymce.moxiecode.com',
				infourl : 'http://wiki.moxiecode.com/index.php/TinyMCE:Plugins/autoresize',
				version : tinymce.majorVersion + "." + tinymce.minorVersion
			};
		}
	});

	// Register plugin
	tinymce.PluginManager.add('autoresize', tinymce.plugins.AutoResizePlugin);
})();