1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef UI_WM_PUBLIC_TRANSIENT_WINDOW_CLIENT_H_ 6 #define UI_WM_PUBLIC_TRANSIENT_WINDOW_CLIENT_H_ 7 8 #include "base/basictypes.h" 9 #include "ui/aura/aura_export.h" 10 11 namespace aura { 12 13 class Window; 14 15 namespace client { 16 17 // TransientWindowClient is used to add or remove transient windows. Transient 18 // children get the following behavior: 19 // . The transient parent destroys any transient children when it is 20 // destroyed. This means a transient child is destroyed if either its parent 21 // or transient parent is destroyed. 22 // . If a transient child and its transient parent share the same parent, then 23 // transient children are always ordered above the transient parent. 24 // Transient windows are typically used for popups and menus. 25 // TODO(sky): nuke this class and replace with calls to TransientWindowManager. 26 // This is temporary until we start moving to ui/wm. 27 class AURA_EXPORT TransientWindowClient { 28 public: 29 virtual void AddTransientChild(Window* parent, Window* child) = 0; 30 virtual void RemoveTransientChild(Window* parent, Window* child) = 0; 31 virtual Window* GetTransientParent(Window* window) = 0; 32 virtual const Window* GetTransientParent(const Window* window) = 0; 33 34 protected: ~TransientWindowClient()35 virtual ~TransientWindowClient() {} 36 }; 37 38 // Sets/gets the TransientWindowClient. This does *not* take ownership of 39 // |client|. It is assumed the caller will invoke SetTransientWindowClient(NULL) 40 // before deleting |client|. 41 AURA_EXPORT void SetTransientWindowClient(TransientWindowClient* client); 42 AURA_EXPORT TransientWindowClient* GetTransientWindowClient(); 43 44 } // namespace client 45 } // namespace aura 46 47 #endif // UI_WM_PUBLIC_TRANSIENT_WINDOW_CLIENT_H_ 48