Remove implementation of Panels on OSes other than ChromeOS.

chrome/browser/ui/views/panels/panel_stack_view.h

-// Copyright (c) 2013 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 CHROME_BROWSER_UI_VIEWS_PANELS_PANEL_STACK_VIEW_H_
-#define CHROME_BROWSER_UI_VIEWS_PANELS_PANEL_STACK_VIEW_H_
-
-#include <list>
-#include <map>
-#include <memory>
-
-#include "base/macros.h"
-#include "build/build_config.h"
-#include "chrome/browser/ui/panels/native_panel_stack_window.h"
-#include "ui/gfx/animation/animation_delegate.h"
-#include "ui/views/focus/widget_focus_manager.h"
-#include "ui/views/widget/widget_delegate.h"
-#include "ui/views/widget/widget_observer.h"
-
-#if defined(OS_WIN)
-#include "chrome/browser/ui/views/panels/taskbar_window_thumbnailer_win.h"
-#include "ui/base/win/hwnd_subclass.h"
-#endif
-
-namespace gfx {
-class LinearAnimation;
-}
-namespace views {
-class Widget;
-}
-
-// A native window that acts as the owner of all panels in the stack, in order
-// to make all panels appear as a single window on the taskbar or launcher.
-class PanelStackView : public NativePanelStackWindow,
-                       public views::WidgetFocusChangeListener,
-#if defined(OS_WIN)
-                       public ui::HWNDMessageFilter,
-                       public TaskbarWindowThumbnailerDelegateWin,
-#endif
-                       public gfx::AnimationDelegate {
- public:
-  explicit PanelStackView(NativePanelStackWindowDelegate* delegate);
-  ~PanelStackView() override;
-
- protected:
-  // Overridden from NativePanelStackWindow:
-  void Close() override;
-  void AddPanel(Panel* panel) override;
-  void RemovePanel(Panel* panel) override;
-  void MergeWith(NativePanelStackWindow* another) override;
-  bool IsEmpty() const override;
-  bool HasPanel(Panel* panel) const override;
-  void MovePanelsBy(const gfx::Vector2d& delta) override;
-  void BeginBatchUpdatePanelBounds(bool animate) override;
-  void AddPanelBoundsForBatchUpdate(Panel* panel,
-                                    const gfx::Rect& new_bounds) override;
-  void EndBatchUpdatePanelBounds() override;
-  bool IsAnimatingPanelBounds() const override;
-  void Minimize() override;
-  bool IsMinimized() const override;
-  void DrawSystemAttention(bool draw_attention) override;
-  void OnPanelActivated(Panel* panel) override;
-
- private:
-  typedef std::list<Panel*> Panels;
-
-  // The map value is old bounds of the panel.
-  typedef std::map<Panel*, gfx::Rect> BoundsUpdates;
-
-  // Overridden from views::WidgetFocusChangeListener:
-  void OnNativeFocusChanged(gfx::NativeView focused_now) override;
-
-  // Overridden from AnimationDelegate:
-  void AnimationEnded(const gfx::Animation* animation) override;
-  void AnimationProgressed(const gfx::Animation* animation) override;
-  void AnimationCanceled(const gfx::Animation* animation) override;
-
-  // Updates the bounds of panels as specified in batch update data.
-  void UpdatePanelsBounds();
-
-  // Notifies the delegate that the updates of the panel bounds are completed.
-  void NotifyBoundsUpdateCompleted();
-
-  // Computes/updates the minimum bounds that could fit all panels.
-  gfx::Rect GetStackWindowBounds() const;
-  void UpdateStackWindowBounds();
-
-  views::Widget* CreateWindowWithBounds(const gfx::Rect& bounds);
-  void EnsureWindowCreated();
-
-  // Makes the stack window own the panel window such that multiple panels
-  // stacked together could appear as a single window on the taskbar or
-  // launcher.
-  static void MakeStackWindowOwnPanelWindow(Panel* panel,
-                                            PanelStackView* stack_window);
-
-#if defined(OS_WIN)
-  // Overridden from ui::HWNDMessageFilter:
-  bool FilterMessage(HWND hwnd,
-                     UINT message,
-                     WPARAM w_param,
-                     LPARAM l_param,
-                     LRESULT* l_result) override;
-
-  // Overridden from TaskbarWindowThumbnailerDelegateWin:
-  std::vector<HWND> GetSnapshotWindowHandles() const override;
-
-  // Updates the live preview snapshot when something changes, like
-  // adding/removing/moving/resizing a stacked panel.
-  void RefreshLivePreviewThumbnail();
-
-  // Updates the bounds of the widget window in a deferred way.
-  void DeferUpdateNativeWindowBounds(HDWP defer_window_pos_info,
-                                     views::Widget* window,
-                                     const gfx::Rect& bounds);
-#endif
-
-  NativePanelStackWindowDelegate* delegate_;
-
-  views::Widget* window_;  // Weak pointer, own us.
-
-  // Tracks all panels that are enclosed by this window.
-  Panels panels_;
-
-  // Is the taskbar icon of the underlying window being flashed in order to
-  // draw the user's attention?
-  bool is_drawing_attention_;
-
-#if defined(OS_WIN)
-  // The custom live preview snapshot is always provided for the stack window.
-  // This is because the system might not show the snapshot correctly for
-  // a small window, like collapsed panel.
-  std::unique_ptr<TaskbarWindowThumbnailerWin> thumbnailer_;
-#endif
-
-  // For batch bounds update.
-  bool animate_bounds_updates_;
-  bool bounds_updates_started_;
-  BoundsUpdates bounds_updates_;
-
-  // Used to animate the bounds changes at a synchronized pace.
-  std::unique_ptr<gfx::LinearAnimation> bounds_animator_;
-
-  DISALLOW_COPY_AND_ASSIGN(PanelStackView);
-};
-
-#endif  // CHROME_BROWSER_UI_VIEWS_PANELS_PANEL_STACK_VIEW_H_