/* 
	MozTxtAlignFix version 0.3 Beta
	August 03, 2005
	Copyright (C) 2005 Saravana Kumar
	Comments/Suggestions ? saravanannkl at gmail dot com
	Tested with Firefox 1.0.6/Deer Park Alpha 2 and Greasemonkey 0.5 Beta.

	This program is free software; you can redistribute it and/or
	modify it under the terms of the GNU General Public License
	as published by the Free Software Foundation; either version 2
	of the License, or (at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.

	You can download a copy of the GNU General Public License at
	http://www.gnu.org/licenses/gpl.txt
	or get a free printed copy by writing to the Free Software Foundation,
	Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/

// ==UserScript==
// @name			MozTxtAlignFix
// @namespace		http://saravan.blogspot.com
// @description		Temp. fix for Mozilla Bug # 270012
// @include			http://*
// @include			file://*
// ==/UserScript==

(function() {
	
	var justifiedObjects = new Array();
	var objwithLtrSpg = new Array();
	var objwithWrdSpg = new Array();
	var objLtrSpgVal = new Array();
	var objWrdSpgVal = new Array();
	var bToggled = false;

	var MozTxtAlignFix = {

		canIFix : function () {
			// Check the current page for Tamil Script.
			// Tamil alphabet KA will occur in almost all Tamil pages.
			// Check only for KA. Ubhayam Krupa. 

			var allBody = document.getElementsByTagName("body")
			if(allBody.length==0) return false;
			return (allBody[0].innerHTML.indexOf(String.fromCharCode(2965))>-1);
		},

		fixTags : function (obj) {
			if(!obj) return;

			if(obj.style) {

				var objStyle = window.getComputedStyle(obj, '');

				if(objStyle.textAlign.length == 7) {
					justifiedObjects[justifiedObjects.length] = obj;
					obj.style.textAlign = "left";
				}

				if(objStyle.letterSpacing.length!=0 && objStyle.letterSpacing.length!=6) {
					objwithLtrSpg[objwithLtrSpg.length] = obj;
					objLtrSpgVal[objLtrSpgVal.length] = objStyle.letterSpacing;
					obj.style.letterSpacing = "normal";
				}

				if(objStyle.wordSpacing.length!=0 && objStyle.wordSpacing.length!=6) {
					objwithWrdSpg[objwithWrdSpg.length] = obj;
					objWrdSpgVal[objWrdSpgVal.length] = objStyle.wordSpacing;
					obj.style.wordSpacing = "normal";
				}

			}

			var kids = obj.childNodes;

			if(!kids) return;

			// Do the same for Object's Children
			for (var i = 0; i < kids.length; i++)
				this.fixTags(kids[i]);
		},

		// Inspired from Mark Pilgrim's Butler Script (http://diveintomark.org/projects/butler/butler.user.js)
		notifyUser : function () {
			if(justifiedObjects.length == 0 && objwithLtrSpg.length == 0 && objwithWrdSpg.length == 0) return;

			// Blogger fix.
			var bloggerNavBar = document.getElementById('b-navbar');
			if(bloggerNavBar) bloggerNavBar.parentNode.removeChild(bloggerNavBar);

			var logo = document.createElement("div");
			logo.innerHTML = '<div style="margin: 0 auto 0 auto; border-bottom: 1px solid #000000; margin-bottom: 5px; font-size: small; background-color: #000000; color: #ffffff;"><center><p style="margin: 2px 0 1px 0; color: #ffffff; background-color: #000000;"> Tamil fonts Enhanced by MozTxtAlignFix Script. (<a id="_toggle" style="background: black; color: white;" title="Toggle Changes" href="#">Undo Changes</a>)</p></center></div>';
			document.body.insertBefore(logo, document.body.firstChild);
			var a = document.getElementById('_toggle');
			a.addEventListener('click', function(event) {
					var tgl = document.getElementById('_toggle');
					if(bToggled) {
						for(i=0;i<justifiedObjects.length; i++)
							justifiedObjects[i].style.textAlign = 'left';

						for(i=0;i<objwithLtrSpg.length; i++)
							objwithLtrSpg[i].style.letterSpacing = 'normal';

						for(i=0;i<objwithWrdSpg.length; i++)
							objwithWrdSpg[i].style.wordSpacing = 'normal';

						tgl.innerHTML = ' Undo Changes ';
					}
					else {

						for(i=0;i<justifiedObjects.length; i++)
							justifiedObjects[i].style.textAlign = 'justify';

						for(i=0;i<objwithLtrSpg.length; i++)
							objwithLtrSpg[i].style.letterSpacing = objLtrSpgVal[i];

						for(i=0;i<objwithWrdSpg.length; i++)
							objwithWrdSpg[i].style.wordSpacing = objWrdSpgVal[i];

						tgl.innerHTML = ' Fix the Page ';
					}
					bToggled = !bToggled;
					event.preventDefault();
			}, true);
		},

		processPage : function () {
			// if(!this.canIFix()) return;
			this.fixTags(document.body);
			this.notifyUser();
		}
	}
	
	MozTxtAlignFix.processPage();
}) ();