chromeos: Move files in //ash/common to //ash, part 2

ash/common/shelf/shelf_layout_manager.h

Index: ash/common/shelf/shelf_layout_manager.h
diff --git a/ash/common/shelf/shelf_layout_manager.h b/ash/common/shelf/shelf_layout_manager.h
deleted file mode 100644
index 87f598a8bd6267c271b5aa9a1230e5e023772d4b..0000000000000000000000000000000000000000
--- a/ash/common/shelf/shelf_layout_manager.h
+++ /dev/null
@@ -1,365 +0,0 @@
-// Copyright 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_SHELF_SHELF_LAYOUT_MANAGER_H_
-#define ASH_COMMON_SHELF_SHELF_LAYOUT_MANAGER_H_
-
-#include <memory>
-
-#include "ash/ash_export.h"
-#include "ash/common/session/session_state_observer.h"
-#include "ash/common/shelf/wm_shelf.h"
-#include "ash/common/shell_observer.h"
-#include "ash/common/wm/dock/docked_window_layout_manager_observer.h"
-#include "ash/common/wm/lock_state_observer.h"
-#include "ash/common/wm/wm_snap_to_pixel_layout_manager.h"
-#include "ash/common/wm/workspace/workspace_types.h"
-#include "ash/common/wm_activation_observer.h"
-#include "ash/public/cpp/shelf_types.h"
-#include "base/macros.h"
-#include "base/observer_list.h"
-#include "base/timer/timer.h"
-#include "ui/gfx/geometry/insets.h"
-#include "ui/gfx/geometry/rect.h"
-#include "ui/keyboard/keyboard_controller_observer.h"
-
-namespace ui {
-class ImplicitAnimationObserver;
-class MouseEvent;
-}
-
-namespace ash {
-
-enum class AnimationChangeType;
-class PanelLayoutManagerTest;
-class ShelfLayoutManagerObserver;
-class ShelfLayoutManagerTest;
-class ShelfWidget;
-class WmShelf;
-
-// ShelfLayoutManager is the layout manager responsible for the shelf and
-// status widgets. The shelf is given the total available width and told the
-// width of the status area. This allows the shelf to draw the background and
-// layout to the status area.
-// To respond to bounds changes in the status area StatusAreaLayoutManager works
-// closely with ShelfLayoutManager.
-// On mus, widget bounds management is handled by the window manager.
-class ASH_EXPORT ShelfLayoutManager
-    : public ShellObserver,
-      public WmActivationObserver,
-      public DockedWindowLayoutManagerObserver,
-      public keyboard::KeyboardControllerObserver,
-      public LockStateObserver,
-      public wm::WmSnapToPixelLayoutManager,
-      public SessionStateObserver {
- public:
-  ShelfLayoutManager(ShelfWidget* shelf_widget, WmShelf* wm_shelf);
-  ~ShelfLayoutManager() override;
-
-  bool updating_bounds() const { return updating_bounds_; }
-
-  // Clears internal data for shutdown process.
-  void PrepareForShutdown();
-
-  // Returns whether the shelf and its contents (shelf, status) are visible
-  // on the screen.
-  bool IsVisible() const;
-
-  // Returns the ideal bounds of the shelf assuming it is visible.
-  gfx::Rect GetIdealBounds();
-
-  // Returns the preferred size of the shelf for the target visibility state.
-  gfx::Size GetPreferredSize();
-
-  // Returns the docked area bounds.
-  const gfx::Rect& dock_bounds() const { return dock_bounds_; }
-
-  // Returns the bounds within the root window not occupied by the shelf nor the
-  // virtual keyboard.
-  const gfx::Rect& user_work_area_bounds() const {
-    return user_work_area_bounds_;
-  }
-
-  // Stops any animations and sets the bounds of the shelf and status widgets.
-  void LayoutShelfAndUpdateBounds(bool change_work_area);
-
-  // Stops any animations, sets the bounds of the shelf and status widgets, and
-  // changes the work area
-  void LayoutShelf();
-
-  // Returns shelf visibility state based on current value of auto hide
-  // behavior setting.
-  ShelfVisibilityState CalculateShelfVisibility();
-
-  // Updates the visibility state.
-  void UpdateVisibilityState();
-
-  // Invoked by the shelf when the auto-hide state may have changed.
-  void UpdateAutoHideState();
-
-  // Updates the auto-hide state for certain events.
-  // TODO(mash): Add similar event handling support for mash.
-  void UpdateAutoHideForMouseEvent(ui::MouseEvent* event, WmWindow* target);
-  void UpdateAutoHideForGestureEvent(ui::GestureEvent* event, WmWindow* target);
-
-  ShelfVisibilityState visibility_state() const {
-    return state_.visibility_state;
-  }
-  ShelfAutoHideState auto_hide_state() const { return state_.auto_hide_state; }
-
-  ShelfWidget* shelf_widget() { return shelf_widget_; }
-
-  // Sets whether any windows overlap the shelf. If a window overlaps the shelf
-  // the shelf renders slightly differently.
-  void SetWindowOverlapsShelf(bool value);
-  bool window_overlaps_shelf() const { return window_overlaps_shelf_; }
-
-  void AddObserver(ShelfLayoutManagerObserver* observer);
-  void RemoveObserver(ShelfLayoutManagerObserver* observer);
-
-  // Processes a gesture event and updates the status of the shelf when
-  // appropriate. Returns true if the gesture has been handled and it should not
-  // be processed any further, false otherwise.
-  bool ProcessGestureEvent(const ui::GestureEvent& event);
-
-  // Set an animation duration override for the show / hide animation of the
-  // shelf. Specifying 0 leads to use the default.
-  void SetAnimationDurationOverride(int duration_override_in_ms);
-
-  // Overridden from wm::WmSnapToPixelLayoutManager:
-  void OnWindowResized() override;
-  void SetChildBounds(WmWindow* child,
-                      const gfx::Rect& requested_bounds) override;
-
-  // Overridden from ShellObserver:
-  void OnShelfAutoHideBehaviorChanged(WmWindow* root_window) override;
-  void OnPinnedStateChanged(WmWindow* pinned_window) override;
-
-  // Overridden from WmActivationObserver:
-  void OnWindowActivated(WmWindow* gained_active,
-                         WmWindow* lost_active) override;
-
-  // Overridden from keyboard::KeyboardControllerObserver:
-  void OnKeyboardBoundsChanging(const gfx::Rect& new_bounds) override;
-  void OnKeyboardClosed() override;
-
-  // Overridden from LockStateObserver:
-  void OnLockStateEvent(LockStateObserver::EventType event) override;
-
-  // Overridden from SessionStateObserver:
-  void SessionStateChanged(session_manager::SessionState state) override;
-
-  // TODO(harrym|oshima): These templates will be moved to a new Shelf class.
-  // A helper function for choosing values specific to a shelf alignment.
-  template <typename T>
-  T SelectValueForShelfAlignment(T bottom, T left, T right) const {
-    switch (wm_shelf_->GetAlignment()) {
-      case SHELF_ALIGNMENT_BOTTOM:
-      case SHELF_ALIGNMENT_BOTTOM_LOCKED:
-        return bottom;
-      case SHELF_ALIGNMENT_LEFT:
-        return left;
-      case SHELF_ALIGNMENT_RIGHT:
-        return right;
-    }
-    NOTREACHED();
-    return right;
-  }
-
-  template <typename T>
-  T PrimaryAxisValue(T horizontal, T vertical) const {
-    return wm_shelf_->IsHorizontalAlignment() ? horizontal : vertical;
-  }
-
-  // Returns how the shelf background should be painted.
-  ShelfBackgroundType GetShelfBackgroundType() const;
-
-  // Set the height of the ChromeVox panel, which takes away space from the
-  // available work area from the top of the screen.
-  void SetChromeVoxPanelHeight(int height);
-
- private:
-  class UpdateShelfObserver;
-  friend class PanelLayoutManagerTest;
-  friend class ShelfLayoutManagerTest;
-  friend class WebNotificationTrayTest;
-
-  struct TargetBounds {
-    TargetBounds();
-    ~TargetBounds();
-
-    float opacity;
-    float status_opacity;
-    gfx::Rect shelf_bounds_in_root;
-    gfx::Rect shelf_bounds_in_shelf;
-    gfx::Rect status_bounds_in_shelf;
-    gfx::Insets work_area_insets;
-  };
-
-  struct State {
-    State();
-
-    // Returns true when a secondary user is being added to an existing session.
-    bool IsAddingSecondaryUser() const;
-
-    bool IsScreenLocked() const;
-
-    // Returns true if the two states are considered equal. As
-    // |auto_hide_state| only matters if |visibility_state| is
-    // |SHELF_AUTO_HIDE|, Equals() ignores the |auto_hide_state| as
-    // appropriate.
-    bool Equals(const State& other) const;
-
-    ShelfVisibilityState visibility_state;
-    ShelfAutoHideState auto_hide_state;
-    wm::WorkspaceWindowState window_state;
-    // True when the system is in the cancelable, pre-lock screen animation.
-    bool pre_lock_screen_animation_active;
-    session_manager::SessionState session_state;
-  };
-
-  // Sets the visibility of the shelf to |state|.
-  void SetState(ShelfVisibilityState visibility_state);
-
-  // Updates the bounds and opacity of the shelf and status widgets.
-  // If |observer| is specified, it will be called back when the animations, if
-  // any, are complete. |change_work_area| specifies whether or not to update
-  // the work area of the screen.
-  void UpdateBoundsAndOpacity(const TargetBounds& target_bounds,
-                              bool animate,
-                              bool change_work_area,
-                              ui::ImplicitAnimationObserver* observer);
-
-  // Stops any animations and progresses them to the end.
-  void StopAnimating();
-
-  // Calculates the target bounds assuming visibility of |visible|.
-  void CalculateTargetBounds(const State& state, TargetBounds* target_bounds);
-
-  // Updates the target bounds if a gesture-drag is in progress. This is only
-  // used by |CalculateTargetBounds()|.
-  void UpdateTargetBoundsForGesture(TargetBounds* target_bounds) const;
-
-  // Updates the background of the shelf if it has changed.
-  void MaybeUpdateShelfBackground(AnimationChangeType change_type);
-
-  // Updates the auto hide state immediately.
-  void UpdateAutoHideStateNow();
-
-  // Stops the auto hide timer and clears
-  // |mouse_over_shelf_when_auto_hide_timer_started_|.
-  void StopAutoHideTimer();
-
-  // Returns the bounds of an additional region which can trigger showing the
-  // shelf. This region exists to make it easier to trigger showing the shelf
-  // when the shelf is auto hidden and the shelf is on the boundary between
-  // two displays.
-  gfx::Rect GetAutoHideShowShelfRegionInScreen() const;
-
-  // Returns the AutoHideState. This value is determined from the shelf and
-  // tray.
-  ShelfAutoHideState CalculateAutoHideState(
-      ShelfVisibilityState visibility_state) const;
-
-  // Returns true if |window| is a descendant of the shelf.
-  bool IsShelfWindow(WmWindow* window);
-
-  int GetWorkAreaInsets(const State& state, int size) const;
-
-  // Overridden from DockedWindowLayoutManagerObserver:
-  void OnDockBoundsChanging(
-      const gfx::Rect& dock_bounds,
-      DockedWindowLayoutManagerObserver::Reason reason) override;
-
-  // Called when the LoginUI changes from visible to invisible.
-  void UpdateShelfVisibilityAfterLoginUIChange();
-
-  // Compute |target_bounds| opacity based on gesture and shelf visibility.
-  float ComputeTargetOpacity(const State& state);
-
-  // Returns true if there is a fullscreen window open that causes the shelf
-  // to be hidden.
-  bool IsShelfHiddenForFullscreen() const;
-
-  // Gesture related functions:
-  void StartGestureDrag(const ui::GestureEvent& gesture);
-  void UpdateGestureDrag(const ui::GestureEvent& gesture);
-  void CompleteGestureDrag(const ui::GestureEvent& gesture);
-  void CancelGestureDrag();
-
-  // True when inside UpdateBoundsAndOpacity() method. Used to prevent calling
-  // UpdateBoundsAndOpacity() again from SetChildBounds().
-  bool updating_bounds_;
-
-  bool in_shutdown_ = false;
-
-  // True if the last mouse event was a mouse drag.
-  bool in_mouse_drag_ = false;
-
-  // Current state.
-  State state_;
-
-  ShelfWidget* shelf_widget_;
-  WmShelf* wm_shelf_;
-
-  // Do any windows overlap the shelf? This is maintained by WorkspaceManager.
-  bool window_overlaps_shelf_;
-
-  base::OneShotTimer auto_hide_timer_;
-
-  // Whether the mouse was over the shelf when the auto hide timer started.
-  // False when neither the auto hide timer nor the timer task are running.
-  bool mouse_over_shelf_when_auto_hide_timer_started_;
-
-  base::ObserverList<ShelfLayoutManagerObserver> observers_;
-
-  // The shelf reacts to gesture-drags, and can be set to auto-hide for certain
-  // gestures. Some shelf behaviour (e.g. visibility state, background color
-  // etc.) are affected by various stages of the drag. The enum keeps track of
-  // the present status of the gesture drag.
-  enum GestureDragStatus {
-    GESTURE_DRAG_NONE,
-    GESTURE_DRAG_IN_PROGRESS,
-    GESTURE_DRAG_CANCEL_IN_PROGRESS,
-    GESTURE_DRAG_COMPLETE_IN_PROGRESS
-  };
-  GestureDragStatus gesture_drag_status_;
-
-  // Tracks the amount of the drag. The value is only valid when
-  // |gesture_drag_status_| is set to GESTURE_DRAG_IN_PROGRESS.
-  float gesture_drag_amount_;
-
-  // Manage the auto-hide state during the gesture.
-  ShelfAutoHideState gesture_drag_auto_hide_state_;
-
-  // Used to delay updating shelf background.
-  UpdateShelfObserver* update_shelf_observer_;
-
-  // The bounds of the keyboard.
-  gfx::Rect keyboard_bounds_;
-
-  // The bounds of the dock.
-  gfx::Rect dock_bounds_;
-
-  // The bounds within the root window not occupied by the shelf nor the virtual
-  // keyboard.
-  gfx::Rect user_work_area_bounds_;
-
-  // The height of the ChromeVox panel at the top of the screen, which
-  // needs to be removed from the available work area.
-  int chromevox_panel_height_;
-
-  // The show hide animation duration override or 0 for default.
-  int duration_override_in_ms_;
-
-  // The current shelf background. Should not be assigned to directly, use
-  // MaybeUpdateShelfBackground() instead.
-  ShelfBackgroundType shelf_background_type_;
-
-  DISALLOW_COPY_AND_ASSIGN(ShelfLayoutManager);
-};
-
-}  // namespace ash
-
-#endif  // ASH_COMMON_SHELF_SHELF_LAYOUT_MANAGER_H_