ash/wm/lock_layout_manager.h

   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 ASH_WM_LOCK_LAYOUT_MANAGER_H_
   6 #define ASH_WM_LOCK_LAYOUT_MANAGER_H_
   7
   8 #include "ash/ash_export.h"
   9 #include "ash/shell_delegate.h"
  10 #include "ash/snap_to_pixel_layout_manager.h"
  11 #include "ash/wm/wm_types.h"
  12 #include "base/basictypes.h"
  13 #include "base/compiler_specific.h"
  14 #include "base/memory/scoped_ptr.h"
  15 #include "ui/aura/layout_manager.h"
  16 #include "ui/aura/window_observer.h"
  17 #include "ui/gfx/geometry/rect.h"
  18 #include "ui/keyboard/keyboard_controller.h"
  19 #include "ui/keyboard/keyboard_controller_observer.h"
  20
  21 namespace aura {
  22 class RootWindow;
  23 class Window;
  24 }
  25
  26 namespace ui {
  27 class Layer;
  28 }
  29
  30 namespace ash {
  31 namespace wm {
  32 class WindowState;
  33 class WMEvent;
  34 }
  35
  36 // LockLayoutManager is used for the windows created in LockScreenContainer.
  37 // For Chrome OS this includes out-of-box/login/lock/multi-profile login use
  38 // cases. LockScreenContainer does not use default work area definition.
  39 // By default work area is defined as display area minus shelf, docked windows
  40 // and minus virtual keyboard bounds.
  41 // For windows in LockScreenContainer work area is display area minus virtual
  42 // keyboard bounds (only if keyboard overscroll is disabled). If keyboard
  43 // overscroll is enabled then work area always equals to display area size since
  44 // virtual keyboard changes inner workspace of each WebContents.
  45 // For all windows in LockScreenContainer default wm::WindowState is replaced
  46 // with LockWindowState.
  47 class ASH_EXPORT LockLayoutManager
  48     : public SnapToPixelLayoutManager,
  49       public aura::WindowObserver,
  50       public VirtualKeyboardStateObserver,
  51       public keyboard::KeyboardControllerObserver {
  52  public:
  53   explicit LockLayoutManager(aura::Window* window);
  54   ~LockLayoutManager() override;
  55
  56   // Overridden from aura::LayoutManager:
  57   void OnWindowResized() override;
  58   void OnWindowAddedToLayout(aura::Window* child) override;
  59   void OnWillRemoveWindowFromLayout(aura::Window* child) override;
  60   void OnWindowRemovedFromLayout(aura::Window* child) override;
  61   void OnChildWindowVisibilityChanged(aura::Window* child,
  62                                       bool visibile) override;
  63   void SetChildBounds(aura::Window* child,
  64                       const gfx::Rect& requested_bounds) override;
  65
  66   // Overriden from aura::WindowObserver:
  67   void OnWindowHierarchyChanged(
  68       const WindowObserver::HierarchyChangeParams& params) override;
  69   void OnWindowPropertyChanged(aura::Window* window,
  70                                const void* key,
  71                                intptr_t old) override;
  72   void OnWindowStackingChanged(aura::Window* window) override;
  73   void OnWindowDestroying(aura::Window* window) override;
  74   void OnWindowBoundsChanged(aura::Window* window,
  75                              const gfx::Rect& old_bounds,
  76                              const gfx::Rect& new_bounds) override;
  77
  78   // VirtualKeyboardStateObserver overrides:
  79   void OnVirtualKeyboardStateChanged(bool activated) override;
  80
  81   // keyboard::KeyboardControllerObserver overrides:
  82   void OnKeyboardBoundsChanging(const gfx::Rect& new_bounds) override;
  83
  84  private:
  85   // Adjusts the bounds of all managed windows when the display area changes.
  86   // This happens when the display size, work area insets has changed.
  87   void AdjustWindowsForWorkAreaChange(const wm::WMEvent* event);
  88
  89   aura::Window* window_;
  90   aura::Window* root_window_;
  91
  92   // True is subscribed as keyboard controller observer.
  93   bool is_observing_keyboard_;
  94
  95   // The bounds of the keyboard.
  96   gfx::Rect keyboard_bounds_;
  97
  98   DISALLOW_COPY_AND_ASSIGN(LockLayoutManager);
  99 };
 100
 101 }  // namespace ash
 102
 103 #endif  // ASH_WM_LOCK_LAYOUT_MANAGER_H_