| // Copyright (c) 2012 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 ASH_WM_SYSTEM_MODAL_CONTAINER_LAYOUT_MANAGER_H_ |
| #define ASH_WM_SYSTEM_MODAL_CONTAINER_LAYOUT_MANAGER_H_ |
| |
| #include <vector> |
| |
| #include "ash/ash_export.h" |
| #include "base/basictypes.h" |
| #include "base/compiler_specific.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "ui/aura/layout_manager.h" |
| #include "ui/aura/window_observer.h" |
| |
| namespace aura { |
| class Window; |
| class EventFilter; |
| } |
| namespace gfx { |
| class Rect; |
| } |
| namespace views { |
| class Widget; |
| } |
| |
| namespace ash { |
| namespace internal { |
| |
| // LayoutManager for the modal window container. |
| class ASH_EXPORT SystemModalContainerLayoutManager |
| : public aura::LayoutManager, |
| public aura::WindowObserver { |
| public: |
| explicit SystemModalContainerLayoutManager(aura::Window* container); |
| virtual ~SystemModalContainerLayoutManager(); |
| |
| bool has_modal_background() const { return modal_background_ != NULL; } |
| |
| // Overridden from aura::LayoutManager: |
| virtual void OnWindowResized() OVERRIDE; |
| virtual void OnWindowAddedToLayout(aura::Window* child) OVERRIDE; |
| virtual void OnWillRemoveWindowFromLayout(aura::Window* child) OVERRIDE; |
| virtual void OnWindowRemovedFromLayout(aura::Window* child) OVERRIDE; |
| virtual void OnChildWindowVisibilityChanged(aura::Window* child, |
| bool visibile) OVERRIDE; |
| virtual void SetChildBounds(aura::Window* child, |
| const gfx::Rect& requested_bounds) OVERRIDE; |
| |
| // Overridden from aura::WindowObserver: |
| virtual void OnWindowPropertyChanged(aura::Window* window, |
| const void* key, |
| intptr_t old) OVERRIDE; |
| virtual void OnWindowDestroying(aura::Window* window) OVERRIDE; |
| |
| // Can a given |window| receive and handle input events? |
| bool CanWindowReceiveEvents(aura::Window* window); |
| |
| // Activates next modal window if any. Returns false if there |
| // are no more modal windows in this layout manager. |
| bool ActivateNextModalWindow(); |
| |
| // Creates modal background window, which is a partially-opaque |
| // fullscreen window. If there is already a modal background window, |
| // it will bring it the top. |
| void CreateModalBackground(); |
| |
| void DestroyModalBackground(); |
| |
| // Is the |window| modal background? |
| static bool IsModalBackground(aura::Window* window); |
| |
| private: |
| void AddModalWindow(aura::Window* window); |
| void RemoveModalWindow(aura::Window* window); |
| |
| aura::Window* modal_window() { |
| return !modal_windows_.empty() ? modal_windows_.back() : NULL; |
| } |
| |
| // The container that owns the layout manager. |
| aura::Window* container_; |
| |
| // A widget that dims the windows behind the modal window(s) being |
| // shown in |container_|. |
| views::Widget* modal_background_; |
| |
| // A stack of modal windows. Only the topmost can receive events. |
| std::vector<aura::Window*> modal_windows_; |
| |
| DISALLOW_COPY_AND_ASSIGN(SystemModalContainerLayoutManager); |
| }; |
| |
| } // namespace internal |
| } // namespace ash |
| |
| #endif // ASH_WM_SYSTEM_MODAL_CONTAINER_LAYOUT_MANAGER_H_ |