CKEDITOR.dialog.add('pbckcodeDialog', function ( editor ) {

// load JS file
var head = document.getElementsByTagName('HEAD').item(0);
var script= document.createElement("script");
script.type = "text/javascript";
script.src = CKEDITOR.plugins.getPath('pbckcode') + "dialogs/ace/ace.js";
head.appendChild(script);

// load CSS file
var link  = document.createElement('link');
link.rel  = 'stylesheet';
link.type = 'text/css';
link.href = CKEDITOR.plugins.getPath('pbckcode') + "dialogs/style.css";
link.media = 'all';
head.appendChild(link);

// default values of the plugin
if(editor.config.pbckcode.cls == undefined)
	editor.config.pbckcode.cls = "prettyprint linenums";
if(editor.config.pbckcode.modes == undefined)
	editor.config.pbckcode.modes =  [ ['PHP', 'php'], ['HTML', 'html'], ['CSS', 'css'] ]
if(editor.config.pbckcode.defaultMode == undefined)
	editor.config.pbckcode.defaultMode =  editor.config.pbckcode.modes[0][1];
if(editor.config.pbckcode.theme == undefined)
	editor.config.pbckcode.theme = 'textmate';

var AceEditor;

return {
		// Basic properties of the dialog window: title, minimum size.
		title: editor.lang.pbckcode.title,
		minWidth: 600,
		minHeight: 400,

		// Dialog window contents definition.
		contents:
		[{
			id		 : 'code-container',
			label	 : editor.lang.pbckcode.tabCode,
			elements :
			[{
				type        : 'select',
				id          : 'code-select',
				items       : editor.config.pbckcode.modes,
				defaultMode : editor.config.pbckcode.defaultMode,
				setup       : function(element) {
					this.setValue(element.getAttribute("data-language"));
				},
				commit : function(element) {
					element.setAttribute("data-language", this.getValue());
				},
				onChange: function(api) {
					AceEditor.getSession().setMode("ace/mode/" + this.getValue());
				}
			},
			{
				type  : 'html',
				html  : '<div id="code"></div>',
				setup : function(element) {
					// get the value of the editor
					code = element.getHtml();
					code = code.replace(new RegExp('<br/>', 'g'), '\n');
					code = code.replace(new RegExp('<br>', 'g'), '\n');
					code = code.replace(new RegExp('&lt;', 'g'), '<');
					code = code.replace(new RegExp('&gt;', 'g'), '>');
					code = code.replace(new RegExp('&amp;', 'g'), '&');

					AceEditor.setValue(code);
				},
				commit : function(element) {
					element.setText(AceEditor.getValue());
				}
			}]
		}],
		onLoad: function() {
			// we get the #code div and style it
			var code = document.getElementById('code');
			code.style.width = '600px';
			code.style.height = '380px';
			code.style.position = 'relative';

			// we load the ACE plugin to our div
			AceEditor = ace.edit("code");
			AceEditor.getSession().setMode("ace/mode/" + editor.config.pbckcode.defaultMode);
			AceEditor.setTheme("ace/theme/" + editor.config.pbckcode.theme);
		},
		onShow : function() {
			// get the select
			var selection = editor.getSelection();
			// get the entire element
			var element = selection.getStartElement();

			// looking for the pre parent tag
			if(element)
				element = element.getAscendant('pre', true);

			// if there is no pre tag, it is an addition. Therefore, it is an edition
			if(!element || element.getName() != 'pre') {
				element = editor.document.createElement('pre');
				this.insertMode = true;
			}
			else
				this.insertMode = false;

			// get the element to fill the inputs
			this.element = element;

			// we empty the editor
			AceEditor.setValue('');

			// we fill the inputs
			if(!this.insertMode)
				this.setupContent(this.element);
		},
		// This method is invoked once a user clicks the OK button, confirming the dialog.
		onOk: function() {
			var dialog = this,
				pre = this.element;

			// we get the value of the inputs
			this.commitContent(pre);

			// we add a new pre tag into ckeditor editor
			if(this.insertMode) {
				pre.setAttribute('class', editor.config.pbckcode.cls);
				editor.insertElement(pre);
			}

		}
	};


});