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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CHROME_BROWSER_EXTENSIONS_WINDOW_CONTROLLER_LIST_H_
      6 #define CHROME_BROWSER_EXTENSIONS_WINDOW_CONTROLLER_LIST_H_
      7 
      8 #include <list>
      9 
     10 #include "base/compiler_specific.h"
     11 #include "base/memory/singleton.h"
     12 #include "base/observer_list.h"
     13 #include "chrome/browser/extensions/window_controller.h"
     14 
     15 class Profile;
     16 class UIThreadExtensionFunction;
     17 
     18 namespace extensions {
     19 
     20 class WindowControllerListObserver;
     21 
     22 // Class to maintain a list of WindowControllers.
     23 class WindowControllerList {
     24  public:
     25   typedef std::list<WindowController*> ControllerList;
     26 
     27   WindowControllerList();
     28   ~WindowControllerList();
     29 
     30   void AddExtensionWindow(WindowController* window);
     31   void RemoveExtensionWindow(WindowController* window);
     32 
     33   void AddObserver(WindowControllerListObserver* observer);
     34   void RemoveObserver(WindowControllerListObserver* observer);
     35 
     36   // Returns a window matching |id|.
     37   WindowController* FindWindowById(int id) const;
     38 
     39   // Returns a window matching the context the function was invoked in.
     40   WindowController* FindWindowForFunctionById(
     41       const UIThreadExtensionFunction* function,
     42       int id) const;
     43 
     44   // Returns the focused or last added window matching the context the function
     45   // was invoked in.
     46   WindowController* CurrentWindowForFunction(
     47       const UIThreadExtensionFunction* function) const;
     48 
     49   const ControllerList& windows() const { return windows_; }
     50 
     51   static WindowControllerList* GetInstance();
     52 
     53  private:
     54   friend struct DefaultSingletonTraits<WindowControllerList>;
     55 
     56   // Entries are not owned by this class and must be removed when destroyed.
     57   ControllerList windows_;
     58 
     59   ObserverList<WindowControllerListObserver> observers_;
     60 
     61   DISALLOW_COPY_AND_ASSIGN(WindowControllerList);
     62 };
     63 
     64 }  // namespace extensions
     65 
     66 #endif  // CHROME_BROWSER_EXTENSIONS_WINDOW_CONTROLLER_LIST_H_
     67