本文整理汇总了TypeScript中@dataservices/virtualization/view-editor/command/undo-redo/undo-manager.UndoManager.add方法的典型用法代码示例。如果您正苦于以下问题：TypeScript UndoManager.add方法的具体用法？TypeScript UndoManager.add怎么用？TypeScript UndoManager.add使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类@dataservices/virtualization/view-editor/command/undo-redo/undo-manager.UndoManager的用法示例。
在下文中一共展示了UndoManager.add方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的TypeScript代码示例。
示例1: it
it( "shouldConvertToJsonCorrectly" , () => {
const undoMgr = new UndoManager();
// add update name command
let cmd = CommandFactory.createUpdateViewNameCommand( "newName", "oldName");
let undoable = CommandFactory.createUndoable( cmd as Command ) ;
undoMgr.add( undoable as Undoable );
// add update description command
cmd = CommandFactory.createUpdateViewDescriptionCommand( "newDescription", "oldDescription");
undoable = CommandFactory.createUndoable( cmd as Command ) ;
undoMgr.add( undoable as Undoable );
// should include both undoables
expect( undoMgr.toJSON() ).not.toBe( null );
expect( undoMgr.toJSON()[ UndoManager.undoables ] ).not.toBe( null );
expect( undoMgr.toJSON()[ UndoManager.undoables ] instanceof Array ).toBe( true );
const undoables = undoMgr.toJSON()[ UndoManager.undoables ] as Array< any >;
expect( undoables.length ).toBe( 2 );
// move the pointer to the left
undoMgr.popUndoCommand();
expect( undoMgr.toArray().length).toBe( 1 );
expect( undoMgr.toArray().length).toBe( 1 );
} );