//    Licensed Materials - Property of IBM
//
//    IBM Cognos Products:  cclcore
//
//    (C) Copyright IBM Corp. 2012, 2013
//
//    US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
dojo.provide("bidi.dojo.editor.plugins.BidiSupport");

dojo.require("dijit._editor._Plugin");

dojo.declare("bidi.dojo.editor.plugins.BidiSupport",dijit._editor._Plugin,{
	// summary:
	//		This plugin provides 2 toolbar buttons making possible to switch RTE text direction
	//		between LTR and RTL mode

	command: "bidiSupport",
	_LTR: 'ltr',
	_RTL: 'rtl',
	_transText: {},

	setEditor: function(/*dijit.Editor*/ editor){
		// summary:
		//		Tell the plugin which Editor it is associated with.
		this.editor = editor;
		this._initButton();
	},

	_initButton: function(){
		// summary:
		//		Override _Plugin._initButton(). Creates two buttons, used for
		//		setting text direction to left-to-right and right-to-left.
		this._transText[this._LTR] = this._LTR;
		this._transText[this._RTL] = this._RTL;

		var bMenu = new dijit.Menu({});
		bMenu.addChild(new dijit.MenuItem({label:this._transText[this._LTR], iconClass:this.iconClassPrefix+" "+this.iconClassPrefix + "LeftToRight", onClick:dojo.hitch(this, "_changeDir", this._LTR)}));
		bMenu.addChild(new dijit.MenuItem({label:this._transText[this._RTL], iconClass:this.iconClassPrefix+" "+this.iconClassPrefix + "RightToLeft", onClick:dojo.hitch(this, "_changeDir", this._RTL)}));
		var direction = dojo.getComputedStyle(this.editor.domNode).direction;
		this.button = new dijit.form.DropDownButton(dojo.mixin({
			label: this._transText[direction],
			lang: this.editor.lang,
			dropDown: bMenu,
		    showLabel: false,
		    iconClass: this.iconClassPrefix+" "+this.iconClassPrefix + ((direction === this._LTR) ? "LeftToRight" : "RightToLeft")
		}, this.params || {}));

		this.editor.onLoadDeferred.addCallback(dojo.hitch(this, function(){
			var h = dojo.hitch(this,this._toggleDir);
			this.editor.addKeyHandler('d', true, false, h);
		}));
	},
	_toggleDir: function(){
		// summary:
		//		Called in result of using Ctrl+Shift+X shortcut.
		//		Toggles the Editor direction
		var dir = this.editor.editorObject.contentWindow.document.documentElement.getElementsByTagName("body")[0].dir;
		dir = (dir === this._LTR) ? this._RTL : this._LTR;
		this._changeDir(dir);
	},
	_changeDir: function(dir){
		// summary:
		//		Handler for button click events, to switch the text direction of the editor
		if(dir){
			var editDoc = this.editor.editorObject.contentWindow.document.documentElement.getElementsByTagName("body")[0];
			editDoc.dir = dir;
			if(dojo.isIE && editDoc.firstChild) {
				editDoc.firstChild.dir = "";
			}
			var updatedClass = this.iconClassPrefix+" "+this.iconClassPrefix + ((dir === this._LTR)? "LeftToRight" : "RightToLeft");
			dojo.attr(this.button,"iconClass",updatedClass);
			dojo.attr(this.button,"label",this._transText[dir]);
		}		
	}
});

dojo.subscribe(dijit._scopeName + ".Editor.getPlugin",null,function(o){
	if(o.plugin){ return; }
	if (o.args.name === "bidiSupport") {
		o.plugin = new bidi.dojo.editor.plugins.BidiSupport({command: o.args.name});
	}
});