Steve Pham
38261d0800
* Updated all copyright headers to split the longer original copyright line into 2 shorter lines Signed-off-by: Steve Pham <spham@amazon.com>
53 lines
1.3 KiB
C++
53 lines
1.3 KiB
C++
/*
|
|
* Copyright (c) Contributors to the Open 3D Engine Project.
|
|
* For complete copyright and license terms please see the LICENSE at the root of this distribution.
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0 OR MIT
|
|
*
|
|
*/
|
|
#pragma once
|
|
|
|
#include <QUndoCommand>
|
|
|
|
class CommandHierarchyItemToggleIsVisible
|
|
: public QUndoCommand
|
|
{
|
|
public:
|
|
|
|
void undo() override;
|
|
void redo() override;
|
|
|
|
// IMPORTANT: We DON'T want this command to support mergeWith().
|
|
// Otherwise we leave commands on the undo stack that have no
|
|
// effect (NOOP).
|
|
//
|
|
// To avoid the NOOPs, we can either:
|
|
//
|
|
// (1) Delete the NOPs from the undo stack.
|
|
// or
|
|
// (2) NOT support mergeWith().
|
|
//
|
|
// The problem with (1) is that it only allows odd number of
|
|
// state changes to be undoable. (2) is more consistent
|
|
// by making all state changes undoable.
|
|
|
|
static void Push(UndoStack* stack,
|
|
HierarchyWidget* hierarchy,
|
|
const HierarchyItemRawPtrList& items);
|
|
|
|
private:
|
|
|
|
CommandHierarchyItemToggleIsVisible(UndoStack* stack,
|
|
HierarchyWidget* hierarchy,
|
|
const HierarchyItemRawPtrList& items);
|
|
|
|
void SetIsVisible(bool isVisible);
|
|
|
|
UndoStack* m_stack;
|
|
|
|
HierarchyWidget* m_hierarchy;
|
|
|
|
EntityHelpers::EntityIdList m_ids;
|
|
bool m_toIsVisible;
|
|
};
|