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* VisualEditor UserInterface HistoryCommand class.
*
* @copyright See AUTHORS.txt
*/
/**
* UserInterface history command.
*
* @class
* @extends ve.ui.Command
*
* @constructor
* @param {string} name
* @param {string} [method]
*/
ve.ui.HistoryCommand = function VeUiHistoryCommand( name, method ) {
method = method || name;
// Parent constructor
ve.ui.HistoryCommand.super.call( this, name, 'history', method );
this.checkMethod = {
undo: 'canUndo',
redo: 'canRedo'
}[ method ];
};
/* Inheritance */
OO.inheritClass( ve.ui.HistoryCommand, ve.ui.Command );
/* Methods */
/**
* @inheritdoc
*/
ve.ui.HistoryCommand.prototype.isExecutable = function ( fragment ) {
var surface = fragment.getSurface();
// Parent method
return ve.ui.HistoryCommand.super.prototype.isExecutable.apply( this, arguments ) &&
surface[ this.checkMethod ]();
};
/* Registration */
ve.ui.commandRegistry.register( new ve.ui.HistoryCommand( 'undo' ) );
ve.ui.commandRegistry.register( new ve.ui.HistoryCommand( 'redo' ) );
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