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

dojo.declare(
	"bidi.dojo.editor.Editor",
	dijit.Editor,
	{
		_userList: false,
		textDir: "",
		
		constructor: function(params){
			if (params.plugins){
				this._userList = true;
			}
		},
		
		postCreate: function(){
			var direction = dojo.getComputedStyle(this.domNode).direction;
			if (!this._userList){
				if ("ltr" == direction){
					this.plugins=["undo","redo","|","cut","copy","paste","|","bold","italic","underline","strikethrough","|",
					"insertOrderedList","insertUnorderedList","indent","outdent","|","justifyLeft","justifyCenter","justifyRight","justifyFull"
					];
			   	} 			
			   	else if ("rtl" == direction){
					this.plugins=["undo","redo","|","cut","copy","paste","|","bold","italic","underline","strikethrough","|",
					"insertOrderedList","insertUnorderedList","indent","outdent","|","justifyRight","justifyCenter","justifyLeft","justifyFull"
					];
			   	} 
			}
			this.inherited(arguments);
			this._setTextDir();
		},
		
		execCommand: function(cmd){
			// summary:
			//	Main handler for executing any commands to the editor, like paste, bold, etc.
			//	Overrides dijit.Editor.execCommand().
			var implFunc = "_" + cmd + "Impl";
			if(this.customUndo && (cmd=='undo' || cmd=='redo')){
				return this[cmd]();
			}
			else{
				var r;
				if(this[implFunc]){
       					if(this.customUndo){
				        	this.endEditing();
						this._beginEditing();
				     	}
					r = this[implFunc](arguments);
					if(this.customUndo){
						this._endEditing();
				     	}
				}
				else{
					r = this.inherited('execCommand', arguments);
				}
				return r;
			}           
		},
		
		_setTextDir: function(){
			if (this.editNode){		        
				dojo.attr(this.editNode, "dir", (this.isTextDirLeftToRight()? "ltr" : "rtl"));
			}
		},

		isTextDirLeftToRight: function(){
    		// summary:
    		// Returns default text direction.
    		// Default text direction is defined by textDir attribute provided that it contains one of 
    		// "ltr" or "rtl" values. In other cases default text direction is the same, as orientation
    		// of the editor.    	
			if(!this.textDir){
				return this._isLeftToRight();
			}
			var textDir = this.textDir.toUpperCase();
			if (textDir == "LTR"){
				return true;
			}else if(textDir == "RTL"){
				return false;
			}else{
				return this.isLeftToRight();
			}
    		},
       
    		_isLeftToRight: function(){
    			if (!this.editNode){
    				return true;
    			}
    			var direction = dojo.getComputedStyle(this.domNode).direction;
    			return ("ltr" == direction);
    		}
   	}	
);