mediawiki-extensions-Visual.../modules/ve/ui/tools/buttons/ve.ui.UndoButtonTool.js
Trevor Parscal 238feeb881 Tools changes
* Rewrite of all tools, dramatically simplifiying them and decreasing
  duplication
* Tools are now created using a tool factory instead of
  a make-shift facility built into the toolbar
* All UI object have a surface or a toolbar reference instead of a
  surface view

Change-Id: I589ecba36bf715b452d03c8fd5c0547dc3c1dc61
2012-10-26 14:48:27 -07:00

63 lines
1.6 KiB
JavaScript

/**
* VisualEditor user interface UndoButtonTool class.
*
* @copyright 2011-2012 VisualEditor Team and others; see AUTHORS.txt
* @license The MIT License (MIT); see LICENSE.txt
*/
/**
* Creates an ve.ui.UndoButtonTool object.
*
* @class
* @constructor
* @extends {ve.ui.ButtonTool}
* @param {ve.ui.Toolbar} toolbar
*/
ve.ui.UndoButtonTool = function VeUiUndoButtonTool( toolbar ) {
// Parent constructor
ve.ui.ButtonTool.call( this, toolbar );
// Events
this.toolbar.getSurface().getModel().addListenerMethod( this, 'history', 'onUpdateState' );
// Initialization
this.setDisabled( true );
};
/* Inheritance */
ve.inheritClass( ve.ui.UndoButtonTool, ve.ui.ButtonTool );
/* Static Members */
ve.ui.UndoButtonTool.static.name = 'undo';
ve.ui.UndoButtonTool.static.titleMessage = 'visualeditor-historybutton-undo-tooltip';
/* Methods */
/**
* Responds to the button being clicked.
*
* @method
*/
ve.ui.UndoButtonTool.prototype.onClick = function () {
this.toolbar.getSurface().execute( 'history', 'undo' );
};
/**
* Responds to the toolbar state being updated.
*
* @method
* @param {ve.dm.Node[]} nodes List of nodes covered by the current selection
* @param {ve.dm.AnnotationSet} full Annotations that cover all of the current selection
* @param {ve.dm.AnnotationSet} partial Annotations that cover some or all of the current selection
*/
ve.ui.UndoButtonTool.prototype.onUpdateState = function () {
this.setDisabled( !this.toolbar.getSurface().getModel().hasPastState() );
};
/* Registration */
ve.ui.toolFactory.register( 'undo', ve.ui.UndoButtonTool );