/* 
 Equation Editor Plugin for CKEditor v4
 Version 1.4

 This plugin allows equations to be created and edited from within CKEditor.
 For more information goto: http://www.codecogs.com/latex/integration/ckeditor_v4/install.php
 
 Copyright CodeCogs 2006-2013
 Written by Will Bateman.
 
 Special Thanks to:
  - Kyle Jones for a fix to allow multiple editor to load on one page
*/
window.CCounter=0;
CKEDITOR.dialog.add( 'eqneditorDialog', function(editor)
{	
	var http = ('https:' == document.location.protocol ? 'https://' : 'http://');
  window.CCounter++;
	return {
		title : editor.lang.eqneditor.title,
		minWidth : 550,
		minHeight : 380,
		resizable: CKEDITOR.DIALOG_RESIZE_NONE,
		contents : [
			{
				id : 'CCEquationEditor',
				label : 'EqnEditor',
				elements : [
	  			{
							type: 'html',
							html: '<div id="CCtoolbar'+window.CCounter+'"></div>',	
							style: 'margin-top:-9px'					
					},
					{
							type: 'html',
							html: '<label for="CClatex'+window.CCounter+'">Equation (LaTeX):</label>',
					},
					{
							type: 'html',
							html: '<textarea id="CClatex'+window.CCounter+'" rows="5"></textarea>',
							style:'border:1px solid #8fb6bd; width:540px; font-size:16px; padding:5px; background-color:#ffc',
					},
					{
						 	type: 'html',
							html: '<label for="CCequation'+window.CCounter+'">Preview:</label>'		
					},
					{
							type :'html',
							html: '<div style="position:absolute; left:5px; bottom:0; z-index:999"><a href="http://www.codecogs.com" target="_blank"><img src="'+http+'codecogs.izyba.com/images/poweredbycodecogs.png" width="105" height="35" border="0" alt="Powered by CodeCogs" style="vertical-align:-4px"/></a> &nbsp; <a href="http://www.codecogs.com/latex/about.php" target="_blank">About</a> | <a href="http://www.codecogs.com/latex/popup.php" target="_blank">Install</a> | <a href="http://www.codecogs.com/pages/forums/forum_view.php?f=28" target="_blank">Forum</a> | <a href="http://www.codecogs.com" target="_blank">CodeCogs</a> &copy; 2007-2013</div><img id="CCequation'+window.CCounter+'" src="'+http+'www.codecogs.com/images/spacer.gif" />'					
					}
				]
			}
		],
		
		onLoad : function() {
			EqEditor.embed('CCtoolbar'+window.CCounter,'','efull');
 			EqEditor.add(new EqTextArea('CCequation'+window.CCounter, 'CClatex'+window.CCounter), false);
		},
				
		onShow : function() {
			var dialog = this,
				  sel = editor.getSelection(),
				  image = sel.getStartElement().getAscendant('img',true);
			 
			// has the users selected an equation. Make sure we have the image element, include itself		
			if(image) 
			{
				var sName = image.getAttribute('src').match( /(gif|svg)\.latex\?(.*)/ );
				if(sName!=null) EqEditor.getTextArea().setText(sName[2]);
				dialog.insertMode = true;
			}
			
			// set-up the field values based on selected or newly created image
			dialog.setupContent( dialog.image );
		},
		
		onOk : function() {
			var eqn = editor.document.createElement( 'img' );
			eqn.setAttribute( 'alt', EqEditor.getTextArea().getLaTeX());
			eqn.setAttribute( 'src', EqEditor.getTextArea().exportEquation('urlencoded'));
			editor.insertElement(eqn);
		}
	};
});