Remove implementation of Panels on OSes other than ChromeOS.

chrome/browser/ui/panels/panel.h

Index: chrome/browser/ui/panels/panel.h
diff --git a/chrome/browser/ui/panels/panel.h b/chrome/browser/ui/panels/panel.h
deleted file mode 100644
index b5d994472c3f56d30ec49eeee04e01b680a33c39..0000000000000000000000000000000000000000
--- a/chrome/browser/ui/panels/panel.h
+++ /dev/null
@@ -1,422 +0,0 @@
-// 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 CHROME_BROWSER_UI_PANELS_PANEL_H_
-#define CHROME_BROWSER_UI_PANELS_PANEL_H_
-
-#include <memory>
-#include <string>
-
-#include "base/macros.h"
-#include "base/memory/weak_ptr.h"
-#include "base/strings/string16.h"
-#include "chrome/browser/command_updater.h"
-#include "chrome/browser/command_updater_delegate.h"
-#include "chrome/browser/ui/panels/panel_constants.h"
-#include "components/sessions/core/session_id.h"
-#include "content/public/browser/notification_observer.h"
-#include "content/public/browser/notification_registrar.h"
-#include "content/public/browser/web_contents_observer.h"
-#include "extensions/browser/extension_registry_observer.h"
-#include "ui/base/base_window.h"
-#include "ui/gfx/geometry/rect.h"
-#include "ui/gfx/image/image.h"
-
-class GURL;
-class NativePanel;
-class PanelCollection;
-class PanelHost;
-class PanelManager;
-class Profile;
-class ScopedKeepAlive;
-class StackedPanelCollection;
-
-namespace content {
-class SiteInstance;
-class WebContents;
-struct NativeWebKeyboardEvent;
-}
-
-namespace extensions {
-class Extension;
-class ExtensionRegistry;
-class WindowController;
-}
-
-// A platform independent implementation of ui::BaseWindow for Panels.
-// This class gets the first crack at all the ui::BaseWindow calls for Panels
-// and does one or more of the following:
-// - Do nothing.  The function is not relevant to Panels.
-// - Do Panel specific platform independent processing and then invoke the
-//   function on the platform specific member. For example, restrict panel
-//   size to certain limits.
-// - Invoke an appropriate PanelManager function to do stuff that might affect
-//   other Panels. For example deleting a panel would rearrange other panels.
-class Panel : public ui::BaseWindow,
-              public CommandUpdaterDelegate,
-              public content::NotificationObserver,
-              public content::WebContentsObserver,
-              public extensions::ExtensionRegistryObserver {
- public:
-  enum ExpansionState {
-    // The panel is fully expanded with both title-bar and the client-area.
-    EXPANDED,
-    // The panel is shown with the title-bar only.
-    TITLE_ONLY,
-    // The panel is shown with 3-pixel line.
-    MINIMIZED
-  };
-
-  // Controls how the attention should be drawn.
-  enum AttentionMode {
-    // Uses the panel attention. The panel's titlebar would be painted
-    // differently to attract the user's attention. This is the default mode.
-    USE_PANEL_ATTENTION = 0x01,
-    // Uses the system attention. On Windows or Linux (depending on Window
-    // Manager), the app icon on taskbar will be flashed. On MacOS, the dock
-    // icon will jump once.
-    USE_SYSTEM_ATTENTION = 0x02
-  };
-
-  ~Panel() override;
-
-  // Returns the PanelManager associated with this panel.
-  PanelManager* manager() const;
-
-  const std::string& app_name() const { return app_name_; }
-  const gfx::Image& app_icon() const { return app_icon_; }
-  const SessionID& session_id() const { return session_id_; }
-  extensions::WindowController* extension_window_controller() const {
-    return extension_window_controller_.get();
-  }
-  const std::string extension_id() const;
-
-  CommandUpdater* command_updater();
-  Profile* profile() const;
-
-  const extensions::Extension* GetExtension() const;
-
-  // Returns web contents of the panel, if any. There may be none if web
-  // contents have not been added to the panel yet.
-  content::WebContents* GetWebContents() const;
-
-  void SetExpansionState(ExpansionState new_expansion_state);
-
-  bool IsDrawingAttention() const;
-
-  // This function will only get called by PanelManager when full screen mode
-  // changes i.e it gets called when an app goes into full screen mode or when
-  // an app exits full screen mode. Panel should respond by making sure
-  // a) it does not go on top when some app enters full screen mode.
-  // b) it remains on top when an app exits full screen mode.
-  void FullScreenModeChanged(bool is_full_screen);
-
-  int TitleOnlyHeight() const;
-
-  // Returns true if the panel can show minimize or restore button in its
-  // titlebar, depending on its state.
-  bool CanShowMinimizeButton() const;
-  bool CanShowRestoreButton() const;
-
-  // ui::BaseWindow overrides.
-  bool IsActive() const override;
-  bool IsMaximized() const override;
-  bool IsMinimized() const override;
-  bool IsFullscreen() const override;
-  gfx::NativeWindow GetNativeWindow() const override;
-  gfx::Rect GetRestoredBounds() const override;
-  ui::WindowShowState GetRestoredState() const override;
-  gfx::Rect GetBounds() const override;
-  void Show() override;
-  void Hide() override;
-  void ShowInactive() override;
-  void Close() override;
-  void Activate() override;
-  void Deactivate() override;
-  void Maximize() override;
-  void Minimize() override;
-  void Restore() override;
-  void SetBounds(const gfx::Rect& bounds) override;
-  void FlashFrame(bool flash) override;
-  bool IsAlwaysOnTop() const override;
-  void SetAlwaysOnTop(bool on_top) override;
-
-  // Overridden from CommandUpdaterDelegate:
-  void ExecuteCommandWithDisposition(int id, WindowOpenDisposition disposition)
-      override;
-
-  // content::NotificationObserver overrides.
-  void Observe(int type,
-               const content::NotificationSource& source,
-               const content::NotificationDetails& details) override;
-
-  // content::WebContentsObserver overrides.
-  void RenderViewHostChanged(content::RenderViewHost* old_host,
-                             content::RenderViewHost* new_host) override;
-
-  //  extensions::ExtensionRegistryObserver.
-  void OnExtensionUnloaded(
-      content::BrowserContext* browser_context,
-      const extensions::Extension* extension,
-      extensions::UnloadedExtensionInfo::Reason reason) override;
-
-  // Construct a native panel implementation.
-  static NativePanel* CreateNativePanel(Panel* panel,
-                                        const gfx::Rect& bounds,
-                                        bool always_on_top);
-
-  NativePanel* native_panel() const { return native_panel_; }
-
-  // Invoked when the native panel has detected a mouse click on the
-  // panel's titlebar, minimize or restore buttons. Behavior of the
-  // click may be modified as indicated by |modifier|.
-  void OnTitlebarClicked(panel::ClickModifier modifier);
-  void OnMinimizeButtonClicked(panel::ClickModifier modifier);
-  void OnRestoreButtonClicked(panel::ClickModifier modifier);
-
-  // Used on platforms where the panel cannot determine its window size
-  // until the window has been created. (e.g. GTK)
-  void OnWindowSizeAvailable();
-
-  // Asynchronous completion of panel close request.
-  void OnNativePanelClosed();
-
-  // May be NULL if:
-  // * panel is newly created and has not been positioned yet.
-  // * panel is being closed asynchronously.
-  // Please use it with caution.
-  PanelCollection* collection() const { return collection_; }
-
-  // Sets the current panel collection that contains this panel.
-  void set_collection(PanelCollection* new_collection) {
-    collection_ = new_collection;
-  }
-
-  StackedPanelCollection* stack() const;
-
-  ExpansionState expansion_state() const { return expansion_state_; }
-  const gfx::Size& min_size() const { return min_size_; }
-  const gfx::Size& max_size() const { return max_size_; }
-  bool auto_resizable() const { return auto_resizable_; }
-
-  bool in_preview_mode() const { return in_preview_mode_; }
-
-  panel::Resizability CanResizeByMouse() const;
-
-  AttentionMode attention_mode() const { return attention_mode_; }
-  void set_attention_mode(AttentionMode attention_mode) {
-    attention_mode_ = attention_mode;
-  }
-
-  // The full size is the size of the panel when it is detached or expanded
-  // in the docked collection and squeezing mode is not on.
-  gfx::Size full_size() const { return full_size_; }
-  void set_full_size(const gfx::Size& size) { full_size_ = size; }
-
-  // Panel must be initialized to be "fully created" and ready for use.
-  // Only called by PanelManager.
-  bool initialized() const { return initialized_; }
-  void Initialize(const GURL& url,
-                  content::SiteInstance* source_site_instance,
-                  const gfx::Rect& bounds,
-                  bool always_on_top);
-
-  // This is different from BaseWindow::SetBounds():
-  // * SetPanelBounds() is only called by PanelManager to manage its position.
-  // * SetBounds() is called by the API to try to change the bounds, which may
-  //   only change the size for Panel.
-  void SetPanelBounds(const gfx::Rect& bounds);
-
-  // Updates the panel bounds instantly without any animation.
-  void SetPanelBoundsInstantly(const gfx::Rect& bounds);
-
-  // Ensures that the panel's size does not exceed the work area by updating
-  // maximum and full size of the panel. This is called each time when display
-  // settings are changed. Note that bounds are not updated here and the call
-  // of setting bounds or refreshing layout should be called after this.
-  void LimitSizeToWorkArea(const gfx::Rect& work_area);
-
-  // Sets whether the panel will auto resize according to its content.
-  void SetAutoResizable(bool resizable);
-
-  // Configures the web contents for auto resize, including configurations
-  // on the renderer and detecting renderer changes.
-  void EnableWebContentsAutoResize(content::WebContents* web_contents);
-
-  // Invoked when the preferred window size of the given panel might need to
-  // get changed due to the contents being auto-resized.
-  void OnContentsAutoResized(const gfx::Size& new_content_size);
-
-  // Resizes the panel and sets the origin. Invoked when the panel is resized
-  // via the mouse.
-  void OnWindowResizedByMouse(const gfx::Rect& new_bounds);
-
-  // Sets minimum and maximum size for the panel.
-  void SetSizeRange(const gfx::Size& min_size, const gfx::Size& max_size);
-
-  // Updates the maximum size of the panel so that it's never smaller than the
-  // panel's desired size. Note that even if the user resizes the panel smaller
-  // later, the increased maximum size will still be in effect. Since it's not
-  // possible currently to switch the panel back to autosizing from
-  // user-resizable, it should not be a problem.
-  void IncreaseMaxSize(const gfx::Size& desired_panel_size);
-
-  // Handles keyboard events coming back from the renderer.
-  void HandleKeyboardEvent(const content::NativeWebKeyboardEvent& event);
-
-  // Sets whether the panel is shown in preview mode. When the panel is
-  // being dragged, it is in preview mode.
-  void SetPreviewMode(bool in_preview_mode);
-
-  // Sets whether the minimize or restore button, if any, are visible.
-  void UpdateMinimizeRestoreButtonVisibility();
-
-  // Changes the preferred size to acceptable based on min_size() and max_size()
-  gfx::Size ClampSize(const gfx::Size& size) const;
-
-  // Called when the panel's active state changes.
-  // |active| is true if panel became active.
-  void OnActiveStateChanged(bool active);
-
-  // Called when the panel starts/ends the user resizing.
-  void OnPanelStartUserResizing();
-  void OnPanelEndUserResizing();
-
-  // Gives beforeunload handlers the chance to cancel the close.
-  bool ShouldCloseWindow();
-
-  // Invoked when the window containing us is closing. Performs the necessary
-  // cleanup.
-  void OnWindowClosing();
-
-  // Executes a command if it's enabled.
-  // Returns true if the command is executed.
-  bool ExecuteCommandIfEnabled(int id);
-
-  // Gets the title of the window from the web contents.
-  base::string16 GetWindowTitle() const;
-
-  // Gets the Favicon of the web contents.
-  gfx::Image GetCurrentPageIcon() const;
-
-  // Updates the title bar to display the current title and icon.
-  void UpdateTitleBar();
-
-  // Updates UI to reflect change in loading state.
-  void LoadingStateChanged(bool is_loading);
-
-  // Moves the panel by delta instantly.
-  void MoveByInstantly(const gfx::Vector2d& delta_origin);
-
-  // Applies |corner_style| to the panel window.
-  void SetWindowCornerStyle(panel::CornerStyle corner_style);
-
-  // Performs the system minimize for the panel, i.e. becoming iconic.
-  void MinimizeBySystem();
-
-  bool IsMinimizedBySystem() const;
-
-  // Returns true if the panel is shown in the active desktop. The user could
-  // create or use multiple desktops or workspaces.
-  bool IsShownOnActiveDesktop() const;
-
-  // Turns on/off the shadow effect around the window shape.
-  void ShowShadow(bool show);
-
- protected:
-  // Panel can only be created using PanelManager::CreatePanel() or subclass.
-  // |app_name| is the default title for Panels when the page content does not
-  // provide a title. For extensions, this is usually the application name
-  // generated from the extension id.
-  Panel(Profile* profile, const std::string& app_name,
-        const gfx::Size& min_size, const gfx::Size& max_size);
-
- private:
-  friend class PanelManager;
-  friend class PanelBrowserTest;
-
-  enum MaxSizePolicy {
-    // Default maximum size is proportional to the work area.
-    DEFAULT_MAX_SIZE,
-    // Custom maximum size is used when the panel is resized by the user.
-    CUSTOM_MAX_SIZE
-  };
-
-  void OnImageLoaded(const gfx::Image& image);
-
-  // Initialize state for all supported commands.
-  void InitCommandState();
-
-  // Configures the renderer for auto resize (if auto resize is enabled).
-  void ConfigureAutoResize(content::WebContents* web_contents);
-
-  // Load the app's image, firing a load state change when loaded.
-  void UpdateAppIcon();
-
-  // Prepares a title string for display (removes embedded newlines, etc).
-  static void FormatTitleForDisplay(base::string16* title);
-
-  // The application name that is also the name of the window when the
-  // page content does not provide a title.
-  // This name should be set when the panel is created.
-  const std::string app_name_;
-
-  Profile* profile_;
-
-  // Current collection of panels to which this panel belongs. This determines
-  // the panel's screen layout.
-  PanelCollection* collection_;  // Owned by PanelManager.
-
-  bool initialized_;
-
-  // Stores the full size of the panel so we can restore it after it's
-  // been minimized or squeezed due to lack of space in the collection.
-  gfx::Size full_size_;
-
-  // This is the minimum size that the panel can shrink to.
-  gfx::Size min_size_;
-
-  // This is the size beyond which the panel is not going to grow to accomodate
-  // the growing content and WebKit would add the scrollbars in such case.
-  gfx::Size max_size_;
-
-  MaxSizePolicy max_size_policy_;
-
-  // True if this panel auto resizes based on content.
-  bool auto_resizable_;
-
-  // True if this panel is in preview mode. When in preview mode, panel bounds
-  // should not be affected by layout refresh. This is currently used by drag
-  // controller to add a panel to the collection without causing its bounds to
-  // change.
-  bool in_preview_mode_;
-
-  // Platform specifc implementation for panels.  It'd be one of
-  // PanelGtk/PanelView/PanelCocoa.
-  NativePanel* native_panel_;  // Weak, owns us.
-
-  AttentionMode attention_mode_;
-
-  ExpansionState expansion_state_;
-
-  // The CommandUpdater manages the window commands.
-  CommandUpdater command_updater_;
-
-  content::NotificationRegistrar registrar_;
-  extensions::ExtensionRegistry* extension_registry_;
-  const SessionID session_id_;
-  std::unique_ptr<extensions::WindowController> extension_window_controller_;
-  std::unique_ptr<PanelHost> panel_host_;
-
-  // Icon showed in the task bar.
-  gfx::Image app_icon_;
-
-  std::unique_ptr<ScopedKeepAlive> keep_alive_;
-
-  base::WeakPtrFactory<Panel> image_loader_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(Panel);
-};
-
-#endif  // CHROME_BROWSER_UI_PANELS_PANEL_H_