1 /*
  2 Copyright (c) 2003-2009, CKSource - Frederico Knabben. All rights reserved.
  3 For licensing, see LICENSE.html or http://ckeditor.com/license
  4 */
  5
  6 CKEDITOR.command = function( editor, commandDefinition )
  7 {
  8 	this.exec = function( data )
  9 	{
 10 		if ( this.state == CKEDITOR.TRISTATE_DISABLED )
 11 			return false;
 12
 13 		return ( commandDefinition.exec.call( this, editor, data ) !== false );
 14 	};
 15
 16 	CKEDITOR.tools.extend( this, commandDefinition,
 17 		// Defaults
 18 		{
 19 			modes : { wysiwyg : 1 },
 20 			state : CKEDITOR.TRISTATE_OFF
 21 		});
 22
 23 	// Call the CKEDITOR.event constructor to initialize this instance.
 24 	CKEDITOR.event.call( this );
 25 };
 26
 27 CKEDITOR.command.prototype =
 28 {
 29 	setState : function( newState )
 30 	{
 31 		// Do nothing if there is no state change.
 32 		if ( this.state == newState )
 33 			return false;
 34
 35 		// Set the new state.
 36 		this.state = newState;
 37
 38 		// Fire the "state" event, so other parts of the code can react to the
 39 		// change.
 40 		this.fire( 'state' );
 41
 42 		return true;
 43 	},
 44
 45 	toggleState : function()
 46 	{
 47 		if ( this.state == CKEDITOR.TRISTATE_OFF )
 48 			this.setState( CKEDITOR.TRISTATE_ON );
 49 		else if ( this.state == CKEDITOR.TRISTATE_ON )
 50 			this.setState( CKEDITOR.TRISTATE_OFF );
 51 	}
 52 }
 53
 54 CKEDITOR.event.implementOn( CKEDITOR.command.prototype, true );
 55