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      1 /*
      2  * Copyright (C) 2009 Google Inc. All rights reserved.
      3  * Copyright (C) 2011, 2012 Apple Inc. All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions are
      7  * met:
      8  *
      9  *     * Redistributions of source code must retain the above copyright
     10  * notice, this list of conditions and the following disclaimer.
     11  *     * Redistributions in binary form must reproduce the above
     12  * copyright notice, this list of conditions and the following disclaimer
     13  * in the documentation and/or other materials provided with the
     14  * distribution.
     15  *     * Neither the name of Google Inc. nor the names of its
     16  * contributors may be used to endorse or promote products derived from
     17  * this software without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     20  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     21  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     22  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     23  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     24  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     25  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     29  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef NotificationCenter_h
     33 #define NotificationCenter_h
     34 
     35 #include "bindings/v8/ExceptionState.h"
     36 #include "bindings/v8/ScriptWrappable.h"
     37 #include "core/dom/ExceptionCode.h"
     38 #include "core/dom/ScriptExecutionContext.h"
     39 #include "core/html/VoidCallback.h"
     40 #include "core/platform/Timer.h"
     41 #include "modules/notifications/Notification.h"
     42 #include "wtf/OwnPtr.h"
     43 #include "wtf/PassRefPtr.h"
     44 #include "wtf/RefCounted.h"
     45 #include "wtf/RefPtr.h"
     46 
     47 #if ENABLE(NOTIFICATIONS) || ENABLE(LEGACY_NOTIFICATIONS)
     48 
     49 namespace WebCore {
     50 
     51 class NotificationClient;
     52 class VoidCallback;
     53 
     54 class NotificationCenter : public RefCounted<NotificationCenter>, public ScriptWrappable, public ActiveDOMObject {
     55 public:
     56     static PassRefPtr<NotificationCenter> create(ScriptExecutionContext*, NotificationClient*);
     57 
     58 #if ENABLE(LEGACY_NOTIFICATIONS)
     59     PassRefPtr<Notification> createNotification(const String& iconURI, const String& title, const String& body, ExceptionState& es)
     60     {
     61         if (!client()) {
     62             es.throwDOMException(InvalidStateError);
     63             return 0;
     64         }
     65         return Notification::create(title, body, iconURI, scriptExecutionContext(), es, this);
     66     }
     67 #endif
     68 
     69     NotificationClient* client() const { return m_client; }
     70 
     71 #if ENABLE(LEGACY_NOTIFICATIONS)
     72     int checkPermission();
     73     void requestPermission(PassRefPtr<VoidCallback> = 0);
     74 #endif
     75 
     76     virtual void stop() OVERRIDE;
     77 
     78 private:
     79     NotificationCenter(ScriptExecutionContext*, NotificationClient*);
     80 
     81     class NotificationRequestCallback : public RefCounted<NotificationRequestCallback> {
     82     public:
     83         static PassRefPtr<NotificationRequestCallback> createAndStartTimer(NotificationCenter*, PassRefPtr<VoidCallback>);
     84         void startTimer();
     85         void timerFired(Timer<NotificationRequestCallback>*);
     86     private:
     87         NotificationRequestCallback(NotificationCenter*, PassRefPtr<VoidCallback>);
     88 
     89         RefPtr<NotificationCenter> m_notificationCenter;
     90         Timer<NotificationRequestCallback> m_timer;
     91         RefPtr<VoidCallback> m_callback;
     92     };
     93 
     94     void requestTimedOut(NotificationRequestCallback*);
     95 
     96     NotificationClient* m_client;
     97     HashSet<RefPtr<NotificationRequestCallback> > m_callbacks;
     98 };
     99 
    100 } // namespace WebCore
    101 
    102 #endif // ENABLE(NOTIFICATIONS) || ENABLE(LEGACY_NOTIFICATIONS)
    103 
    104 #endif // NotificationCenter_h
    105