chromeos: Move files in //ash/common to //ash

ash/common/wm/panels/panel_layout_manager.h

-// 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_COMMON_WM_PANELS_PANEL_LAYOUT_MANAGER_H_
-#define ASH_COMMON_WM_PANELS_PANEL_LAYOUT_MANAGER_H_
-
-#include <list>
-#include <memory>
-
-#include "ash/ash_export.h"
-#include "ash/common/shelf/wm_shelf_observer.h"
-#include "ash/common/shell_observer.h"
-#include "ash/common/wm/window_state_observer.h"
-#include "ash/common/wm_activation_observer.h"
-#include "ash/common/wm_display_observer.h"
-#include "ash/common/wm_layout_manager.h"
-#include "ash/root_window_controller.h"
-#include "base/compiler_specific.h"
-#include "base/macros.h"
-#include "base/memory/weak_ptr.h"
-#include "ui/aura/window_observer.h"
-#include "ui/aura/window_tracker.h"
-#include "ui/keyboard/keyboard_controller.h"
-#include "ui/keyboard/keyboard_controller_observer.h"
-
-namespace gfx {
-class Rect;
-}
-
-namespace views {
-class Widget;
-}
-
-namespace ash {
-class PanelCalloutWidget;
-class WmShelf;
-
-namespace wm {
-class RootWindowController;
-}
-
-// PanelLayoutManager is responsible for organizing panels within the
-// workspace. It is associated with a specific container window (i.e.
-// kShellWindowId_PanelContainer) and controls the layout of any windows
-// added to that container.
-//
-// The constructor takes a |panel_container| argument which is expected to set
-// its layout manager to this instance, e.g.:
-// panel_container->SetLayoutManager(new PanelLayoutManager(panel_container));
-
-class ASH_EXPORT PanelLayoutManager
-    : public WmLayoutManager,
-      public wm::WindowStateObserver,
-      public WmActivationObserver,
-      public WmDisplayObserver,
-      public ShellObserver,
-      public aura::WindowObserver,
-      public keyboard::KeyboardControllerObserver,
-      public WmShelfObserver {
- public:
-  explicit PanelLayoutManager(WmWindow* panel_container);
-  ~PanelLayoutManager() override;
-
-  // Returns the PanelLayoutManager in the specified hierarchy. This searches
-  // from the root of |window|.
-  static PanelLayoutManager* Get(WmWindow* window);
-
-  // Call Shutdown() before deleting children of panel_container.
-  void Shutdown();
-
-  void StartDragging(WmWindow* panel);
-  void FinishDragging();
-
-  void ToggleMinimize(WmWindow* panel);
-
-  // Hide / Show the panel callout widgets.
-  void SetShowCalloutWidgets(bool show);
-
-  // Returns the callout widget (arrow) for |panel|.
-  views::Widget* GetCalloutWidgetForPanel(WmWindow* panel);
-
-  WmShelf* shelf() { return shelf_; }
-  void SetShelf(WmShelf* shelf);
-
-  // Overridden from WmLayoutManager
-  void OnWindowResized() override;
-  void OnWindowAddedToLayout(WmWindow* child) override;
-  void OnWillRemoveWindowFromLayout(WmWindow* child) override;
-  void OnWindowRemovedFromLayout(WmWindow* child) override;
-  void OnChildWindowVisibilityChanged(WmWindow* child, bool visibile) override;
-  void SetChildBounds(WmWindow* child,
-                      const gfx::Rect& requested_bounds) override;
-
-  // Overridden from ShellObserver:
-  void OnOverviewModeEnded() override;
-  void OnShelfAlignmentChanged(WmWindow* root_window) override;
-
-  // Overridden from aura::WindowObserver
-  void OnWindowPropertyChanged(aura::Window* window,
-                               const void* key,
-                               intptr_t old) override;
-
-  // Overridden from wm::WindowStateObserver
-  void OnPostWindowStateTypeChange(wm::WindowState* window_state,
-                                   wm::WindowStateType old_type) override;
-
-  // Overridden from WmActivationObserver
-  void OnWindowActivated(WmWindow* gained_active,
-                         WmWindow* lost_active) override;
-
-  // Overridden from WindowTreeHostManager::Observer
-  void OnDisplayConfigurationChanged() override;
-
-  // Overridden from WmShelfObserver
-  void WillChangeVisibilityState(ShelfVisibilityState new_state) override;
-  void OnShelfIconPositionsChanged() override;
-
- private:
-  friend class PanelLayoutManagerTest;
-  friend class PanelWindowResizerTest;
-  friend class DockedWindowResizerTest;
-  friend class DockedWindowLayoutManagerTest;
-  friend class WorkspaceControllerTest;
-  friend class AcceleratorControllerTest;
-
-  views::Widget* CreateCalloutWidget();
-
-  struct ASH_EXPORT PanelInfo {
-    PanelInfo() : window(NULL), callout_widget(NULL), slide_in(false) {}
-
-    bool operator==(const WmWindow* other_window) const {
-      return window == other_window;
-    }
-
-    // Returns |callout_widget| as a widget. Used by tests.
-    views::Widget* CalloutWidget();
-
-    // A weak pointer to the panel window.
-    WmWindow* window;
-
-    // The callout widget for this panel. This pointer must be managed
-    // manually as this structure is used in a std::list. See
-    // http://www.chromium.org/developers/smart-pointer-guidelines
-    PanelCalloutWidget* callout_widget;
-
-    // True on new and restored panel windows until the panel has been
-    // positioned. The first time Relayout is called the panel will be shown,
-    // and slide into position and this will be set to false.
-    bool slide_in;
-  };
-
-  typedef std::list<PanelInfo> PanelList;
-
-  void MinimizePanel(WmWindow* panel);
-  void RestorePanel(WmWindow* panel);
-
-  // Called whenever the panel layout might change.
-  void Relayout();
-
-  // Called whenever the panel stacking order needs to be updated (e.g. focus
-  // changes or a panel is moved).
-  void UpdateStacking(WmWindow* active_panel);
-
-  // Update the callout arrows for all managed panels.
-  void UpdateCallouts();
-
-  // Overridden from keyboard::KeyboardControllerObserver:
-  void OnKeyboardBoundsChanging(const gfx::Rect& keyboard_bounds) override;
-  void OnKeyboardClosed() override;
-
-  // Parent window associated with this layout manager.
-  WmWindow* panel_container_;
-
-  RootWindowController* root_window_controller_;
-
-  // Protect against recursive calls to OnWindowAddedToLayout().
-  bool in_add_window_;
-  // Protect against recursive calls to Relayout().
-  bool in_layout_;
-  // Indicates if the panel callout widget should be created.
-  bool show_callout_widgets_;
-  // Ordered list of unowned pointers to panel windows.
-  PanelList panel_windows_;
-  // The panel being dragged.
-  WmWindow* dragged_panel_;
-  // The shelf we are observing for shelf icon changes.
-  WmShelf* shelf_;
-
-  // When not NULL, the shelf is hidden (i.e. full screen) and this tracks the
-  // set of panel windows which have been temporarily hidden and need to be
-  // restored when the shelf becomes visible again.
-  std::unique_ptr<aura::WindowTracker> restore_windows_on_shelf_visible_;
-
-  // The last active panel. Used to maintain stacking order even if no panels
-  // are currently focused.
-  WmWindow* last_active_panel_;
-  base::WeakPtrFactory<PanelLayoutManager> weak_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(PanelLayoutManager);
-};
-
-}  // namespace ash
-
-#endif  // ASH_COMMON_WM_PANELS_PANEL_LAYOUT_MANAGER_H_