diff options
Diffstat (limited to 'ui/wm/public/scoped_drag_drop_disabler.h')
-rw-r--r-- | ui/wm/public/scoped_drag_drop_disabler.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/ui/wm/public/scoped_drag_drop_disabler.h b/ui/wm/public/scoped_drag_drop_disabler.h new file mode 100644 index 0000000..4f708ee --- /dev/null +++ b/ui/wm/public/scoped_drag_drop_disabler.h @@ -0,0 +1,40 @@ +// Copyright 2015 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef UI_WM_PUBLIC_SCOPED_DRAG_DROP_DISABLER_H_ +#define UI_WM_PUBLIC_SCOPED_DRAG_DROP_DISABLER_H_ + +#include "base/macros.h" +#include "base/memory/scoped_ptr.h" +#include "ui/aura/window_observer.h" + +namespace aura { +class Window; + +namespace client { +class DragDropClient; + +// ScopedDragDropDisabler is used to temporarily replace the drag'n'drop client +// for a window with a "no-op" client. Upon construction, it installs a new +// client on the window, and upon destruction, it restores the previous one. +class AURA_EXPORT ScopedDragDropDisabler : public WindowObserver { + public: + explicit ScopedDragDropDisabler(Window* window); + ~ScopedDragDropDisabler() override; + + private: + // WindowObserver: + void OnWindowDestroyed(Window* window) override; + + Window* window_; + DragDropClient* old_client_; + scoped_ptr<DragDropClient> new_client_; + + DISALLOW_COPY_AND_ASSIGN(ScopedDragDropDisabler); +}; + +} // namespace client +} // namespace aura + +#endif // UI_WM_PUBLIC_SCOPED_DRAG_DROP_DISABLER_H_ |