Save and restore State for ShellWindows, including panels

chrome/browser/extensions/shell_window_geometry_cache.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 CHROME_BROWSER_EXTENSIONS_SHELL_WINDOW_GEOMETRY_CACHE_H_
 #define CHROME_BROWSER_EXTENSIONS_SHELL_WINDOW_GEOMETRY_CACHE_H_
 
 #include <map>
 #include <set>
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/time.h"
 #include "base/timer.h"
 #include "base/values.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
+#include "ui/base/ui_base_types.h"
 #include "ui/gfx/rect.h"
 
 class Profile;
 
 namespace extensions {
 
 class ExtensionPrefs;
 
 // A cache for persisted geometry of shell windows, both to not have to wait
 // for IO when creating a new window, and to not cause IO on every window
 // geometry change.
 class ShellWindowGeometryCache
     : public base::SupportsWeakPtr<ShellWindowGeometryCache>,
       public content::NotificationObserver {
  public:
   ShellWindowGeometryCache(Profile* profile,
                            ExtensionPrefs* prefs);
 
   virtual ~ShellWindowGeometryCache();
 
+  // Save the geometry and state associated with |extension_id| and |window_id|.
   void SaveGeometry(const std::string& extension_id,
                     const std::string& window_id,
-                    const gfx::Rect& bounds);
+                    const gfx::Rect& bounds,
+                    ui::WindowShowState state);
 
+  // Get any saved geometry and state associated with |extension_id| and
+  // |window_id|. If saved data exists, sets |bounds| and |state| if not NULL
+  // and returns true.
   bool GetGeometry(const std::string& extension_id,
                    const std::string& window_id,
-                   gfx::Rect* bounds) const;
+                   gfx::Rect* bounds,
+                   ui::WindowShowState* state) const;
 
   // Maximum number of windows we'll cache the geometry for per app.
   static const size_t kMaxCachedWindows = 100;
 
  protected:
   friend class ShellWindowGeometryCacheTest;
 
   // For tests, this modifies the timeout delay for saving changes from calls
   // to SaveGeometry. (Note that even if this is set to 0, you still need to
   // run the message loop to see the results of any SyncToStorage call).
   void SetSyncDelayForTests(int timeout_ms);
 
  private:
   // Data stored for each window.
   struct WindowData {
+    WindowData() : window_state(ui::SHOW_STATE_DEFAULT) {}
     gfx::Rect bounds;
+    ui::WindowShowState window_state;
     base::Time last_change;
   };
 
   // Data stored for each extension.
   typedef std::map<std::string, WindowData> ExtensionData;
 
   // content::NotificationObserver
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
@@ skipping 16 matching lines @@
 
   // The timeout value we'll use for |sync_timer_|.
   base::TimeDelta sync_delay_;
 
   content::NotificationRegistrar registrar_;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_SHELL_WINDOW_GEOMETRY_CACHE_H_