/**

 * Interface Elements for jQuery

 * TTabs

 * 

 * http://interface.eyecon.ro

 * 

 * Copyright (c) 2006 Stefan Petre

 * Dual licensed under the MIT (MIT-LICENSE.txt) 

 * and GPL (GPL-LICENSE.txt) licenses.

 *   

 *

 *

 */

jQuery.iTTabs =

{

	doTab : function(e)

	{

		pressedKey = e.charCode || e.keyCode || -1;

		if (pressedKey == 9) {

			if (window.event) {

				window.event.cancelBubble = true;

				window.event.returnValue = false;

			} else {

				e.preventDefault();

				e.stopPropagation();

			}

			if (this.createTextRange) {

				document.selection.createRange().text="\t";

				this.onblur = function() { this.focus(); this.onblur = null; };

			} else if (this.setSelectionRange) {

				start = this.selectionStart;

				end = this.selectionEnd;

				this.value = this.value.substring(0, start) + "\t" + this.value.substr(end);

				this.setSelectionRange(start + 1, start + 1);

				this.focus();

			}

			return false;

		}

	},

	destroy : function()

	{

		return this.each(

			function()

			{

				if (this.hasTabsEnabled && this.hasTabsEnabled == true) {

					jQuery(this).unbind('keydown', jQuery.iTTabs.doTab);

					this.hasTabsEnabled = false;

				}

			}

		);

	},

	build : function()

	{

		return this.each(

			function()

			{

				if (this.tagName == 'TEXTAREA' && (!this.hasTabsEnabled || this.hasTabsEnabled == false)) {

					jQuery(this).bind('keydown', jQuery.iTTabs.doTab);

					this.hasTabsEnabled = true;

				}

			}

		);			

	}

};

jQuery.fn.extend (

	{

		/**

		 * Enable tabs in textareas

		 * 

		 * @name EnableTabs

		 * @description Enable tabs in textareas

		 *

		 * @type jQuery

		 * @cat Plugins/Interface

		 * @author Stefan Petre

		 */

		EnableTabs : jQuery.iTTabs.build,

		/**

		 * Disable tabs in textareas

		 * 

		 * @name DisableTabs

		 * @description Disable tabs in textareas

		 *

		 * @type jQuery

		 * @cat Plugins/Interface

		 * @author Stefan Petre

		 */

		DisableTabs : jQuery.iTTabs.destroy

	}

);