ABANDONED: ash: Support changing default wallpaper at runtime.

ash/desktop_background/desktop_background_controller.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_DESKTOP_BACKGROUND_DESKTOP_BACKGROUND_CONTROLLER_H_
 #define ASH_DESKTOP_BACKGROUND_DESKTOP_BACKGROUND_CONTROLLER_H_
 
 #include "ash/ash_export.h"
 #include "ash/display/display_controller.h"
 #include "base/basictypes.h"
@@ skipping 65 matching lines @@
     BACKGROUND_IMAGE,
   };
 
   DesktopBackgroundController();
   virtual ~DesktopBackgroundController();
 
   BackgroundMode desktop_background_mode() const {
     return desktop_background_mode_;
   }
 
-  void set_command_line_for_testing(base::CommandLine* command_line) {
-    command_line_for_testing_ = command_line;
-  }
-
   // Add/Remove observers.
   void AddObserver(DesktopBackgroundControllerObserver* observer);
   void RemoveObserver(DesktopBackgroundControllerObserver* observer);
 
   // Provides current image on the background, or empty gfx::ImageSkia if there
   // is no image, e.g. background is none.
   gfx::ImageSkia GetWallpaper() const;
 
   WallpaperLayout GetWallpaperLayout() const;
 
   // Initialize root window's background.
   void OnRootWindowAdded(aura::Window* root_window);
 
+  // Initializes |small_default_wallpaper_path_|,
+  // |large_default_wallpaper_path_|, |small_guest_wallpaper_path_|, and
+  // |large_guest_wallpaper_path_| based on the flags in |cl|.
+  // Called from the c'tor with the current process's command line, but also
+  // made public so that tests can call it with a custom command line.
+  void InitWallpaperPathsFromCommandLine(base::CommandLine* cl);
+
+  // Overrides command-line arguments specifying the default wallpaper.
+  // If the previous default wallpaper is currently being shown, the new default
+  // wallpaper is loaded instead.
+  void SetDefaultWallpaperPaths(const base::FilePath& small_path,
+                                const base::FilePath& large_path,
+                                bool is_guest);
+
   // Loads builtin wallpaper asynchronously and sets to current wallpaper
   // after loaded. Returns true if the controller started loading the
   // wallpaper and false otherwise (i.e. the appropriate wallpaper was
   // already loading or loaded).
   bool SetDefaultWallpaper(bool is_guest);
 
   // Sets the user selected custom wallpaper. Called when user selected a file
   // from file system or changed the layout of wallpaper.
   void SetCustomWallpaper(const gfx::ImageSkia& image, WallpaperLayout layout);
 
@@ skipping 22 matching lines @@
   // Overrides DisplayController::Observer:
   virtual void OnDisplayConfigurationChanged() OVERRIDE;
 
  private:
   friend class DesktopBackgroundControllerTest;
   FRIEND_TEST_ALL_PREFIXES(DesktopBackgroundControllerTest, GetMaxDisplaySize);
 
   // An operation to asynchronously loads wallpaper.
   class WallpaperLoader;
 
+  // Determines information about the default wallpaper that should currently be
+  // used. Out-param pointers may be NULL, in which case they will be ignored.
+  void GetDefaultWallpaperInfo(bool is_guest,
+                               base::FilePath* file_path,
+                               WallpaperLayout* file_layout,
+                               int* resource_id,
+                               WallpaperLayout* resource_layout);
+
   // Returns true if the specified default wallpaper is already being
   // loaded by |wallpaper_loader_| or stored in |current_wallpaper_|.
   bool DefaultWallpaperIsAlreadyLoadingOrLoaded(
-      const base::FilePath& image_file, int image_resource_id) const;
+      const base::FilePath& image_file,
+      int image_resource_id) const;
 
   // Returns true if the specified custom wallpaper is already stored
   // in |current_wallpaper_|.
   bool CustomWallpaperIsAlreadyLoaded(const gfx::ImageSkia& image) const;
 
   // Creates view for all root windows, or notifies them to repaint if they
   // already exist.
   void SetDesktopBackgroundImageMode();
 
   // Creates a new background widget and sets the background mode to image mode.
@@ skipping 14 matching lines @@
 
   // Returns id for background container for unlocked and locked states.
   int GetBackgroundContainerId(bool locked);
 
   // Send notification that background animation finished.
   void NotifyAnimationFinished();
 
   // Reload the wallpaper.
   void UpdateWallpaper();
 
-  void set_wallpaper_reload_delay_for_test(bool value) {
-    wallpaper_reload_delay_ = value;
+  void set_wallpaper_reload_delay_for_test(base::TimeDelta delay) {
+    wallpaper_reload_delay_ = delay;
   }
 
   // Returns the maximum size of all displays combined in native
   // resolutions.  Note that this isn't the bounds of the display who
   // has maximum resolutions. Instead, this returns the size of the
   // maximum width of all displays, and the maximum height of all displays.
   static gfx::Size GetMaxDisplaySizeInNative();
 
-  // If non-NULL, used in place of the real command line.
-  base::CommandLine* command_line_for_testing_;
-
   // Can change at runtime.
   bool locked_;
 
+  // Wallpaper images loaded by SetDefaultWallpaper().
+  base::FilePath small_default_wallpaper_path_;
+  base::FilePath large_default_wallpaper_path_;
+  base::FilePath small_guest_wallpaper_path_;
+  base::FilePath large_guest_wallpaper_path_;
+
   BackgroundMode desktop_background_mode_;
 
   SkColor background_color_;
 
   ObserverList<DesktopBackgroundControllerObserver> observers_;
 
   // The current wallpaper.
   scoped_ptr<WallpaperResizer> current_wallpaper_;
 
   // If a default wallpaper is stored in |current_wallpaper_|, the path and
   // resource ID that were passed to WallpaperLoader when loading it.
   // Otherwise, empty and -1, respectively.
   base::FilePath current_default_wallpaper_path_;
   int current_default_wallpaper_resource_id_;
 
   gfx::Size current_max_display_size_;
 
   // Loads default wallpaper from disk.
   scoped_refptr<WallpaperLoader> default_wallpaper_loader_;
 
   base::WeakPtrFactory<DesktopBackgroundController> weak_ptr_factory_;
 
   base::OneShotTimer<DesktopBackgroundController> timer_;
 
-  int wallpaper_reload_delay_;
+  // Delay before updating the wallpaper when the display configuration changes.
+  base::TimeDelta wallpaper_reload_delay_;
 
   DISALLOW_COPY_AND_ASSIGN(DesktopBackgroundController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_DESKTOP_BACKGROUND_DESKTOP_BACKGROUND_CONTROLLER_H_