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https://gerrit.wikimedia.org/r/mediawiki/extensions/VisualEditor
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72 lines
1.6 KiB
JavaScript
72 lines
1.6 KiB
JavaScript
/**
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* Creates an ve.ui.HistoryButtonTool 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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* @param {String} name
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*/
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ve.ui.HistoryButtonTool = function( toolbar, name, title, data ) {
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// Inheritance
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ve.ui.ButtonTool.call( this, toolbar, name, title );
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// Properties
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this.data = data;
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this.enabled = false;
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var _this = this;
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this.toolbar.surfaceView.model.on( 'history', function() {
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_this.updateState();
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});
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};
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/* Methods */
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ve.ui.HistoryButtonTool.prototype.onClick = function() {
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switch ( this.name ) {
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case 'undo':
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var selection = this.toolbar.surfaceView.model.undo( 1 ) || this.toolbar.surfaceView.model.selection;
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this.toolbar.surfaceView.showSelection( selection );
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break;
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case 'redo':
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var selection = this.toolbar.surfaceView.model.redo( 1 ) || this.toolbar.surfaceView.model.selection;
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this.toolbar.surfaceView.showSelection( selection );
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break;
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}
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};
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ve.ui.HistoryButtonTool.prototype.updateState = function( annotations ) {
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var surfaceModel = this.toolbar.surfaceView.model;
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switch( this.name ) {
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case 'undo':
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this.enabled = surfaceModel.bigStack.length - surfaceModel.undoIndex > 0;
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break;
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case 'redo':
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this.enabled = surfaceModel.undoIndex > 0;
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break;
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}
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this.updateEnabled();
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};
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/* Registration */
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ve.ui.Tool.tools.undo = {
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'constructor': ve.ui.HistoryButtonTool,
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'name': 'undo',
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'title': 'Undo (ctrl/cmd + Z)'
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};
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ve.ui.Tool.tools.redo = {
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'constructor': ve.ui.HistoryButtonTool,
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'name': 'redo',
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'title': 'Redo (ctrl/cmd + shift + Z)'
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};
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/* Inhertiance */
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ve.extendClass( ve.ui.HistoryButtonTool, ve.ui.ButtonTool );
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