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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 NotificationClient_h
33 #define NotificationClient_h
34 
35 #include "core/html/VoidCallback.h"
36 #include "modules/notifications/NotificationPermissionCallback.h"
37 #include "wtf/PassOwnPtr.h"
38 
39 namespace blink {
40 
41 class ExecutionContext;
42 class Notification;
43 
44 class NotificationClient {
45 
46 public:
~NotificationClient()47     virtual ~NotificationClient() { }
48 
49     enum Permission {
50         PermissionAllowed, // User has allowed notifications
51         PermissionNotAllowed, // User has not yet allowed
52         PermissionDenied // User has explicitly denied permission
53     };
54 
55     // Requests that a notification be shown.
56     virtual bool show(Notification*) = 0;
57 
58     // Requests that a notification that has already been shown be closed.
59     virtual void close(Notification*) = 0;
60 
61     // Informs the presenter that a Notification object has been destroyed
62     // (such as by a page transition). The presenter may continue showing
63     // the notification, but must not attempt to call the event handlers.
64     virtual void notificationObjectDestroyed(Notification*) = 0;
65 
66     // Checks the current level of permission.
67     virtual Permission checkPermission(ExecutionContext*) = 0;
68 };
69 
70 } // namespace blink
71 
72 #endif // NotificationClient_h
73