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