ash/wm/workspace/workspace_layout_manager_delegate.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_WORKSPACE_WORKSPACE_LAYOUT_MANAGER_DELEGATE_H_
   6 #define ASH_WM_WORKSPACE_WORKSPACE_LAYOUT_MANAGER_DELEGATE_H_
   7
   8 #include "ash/wm/wm_types.h"
   9
  10 namespace aura {
  11 class Window;
  12 }
  13
  14 namespace ash {
  15 namespace wm {
  16 class WindowState;
  17 }
  18
  19 // A delegate which can be set to create and control a backdrop which gets
  20 // placed below the top level window.
  21 class WorkspaceLayoutManagerDelegate {
  22  public:
  23   WorkspaceLayoutManagerDelegate() {}
  24   virtual ~WorkspaceLayoutManagerDelegate() {}
  25
  26   // A window got added to the layout.
  27   virtual void OnWindowAddedToLayout(aura::Window* child) = 0;
  28
  29   // A window got removed from the layout.
  30   virtual void OnWindowRemovedFromLayout(aura::Window* child) = 0;
  31
  32   // The visibility of a window has changed.
  33   virtual void OnChildWindowVisibilityChanged(aura::Window* child,
  34                                               bool visible) = 0;
  35
  36   // The stacking order of a window has changed.
  37   virtual void OnWindowStackingChanged(aura::Window* window) = 0;
  38
  39   // A window state type has changed.
  40   virtual void OnPostWindowStateTypeChange(wm::WindowState* window_state,
  41                                            wm::WindowStateType old_type) = 0;
  42
  43   // The work area insets have changed, altering the total available space.
  44   virtual void OnDisplayWorkAreaInsetsChanged() = 0;
  45 };
  46
  47 }  // namespace ash
  48
  49 #endif  // ASH_WM_WORKSPACE_WORKSPACE_LAYOUT_MANAGER_DELEGATE_H_