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1 /* | |
2 * Copyright (C) 2013 Google Inc. All rights reserved. | |
3 * | |
4 * Redistribution and use in source and binary forms, with or without | |
5 * modification, are permitted provided that the following conditions are | |
6 * met: | |
7 * | |
8 * * Redistributions of source code must retain the above copyright | |
9 * notice, this list of conditions and the following disclaimer. | |
10 * * Redistributions in binary form must reproduce the above | |
11 * copyright notice, this list of conditions and the following disclaimer | |
12 * in the documentation and/or other materials provided with the | |
13 * distribution. | |
14 * * Neither the name of Google Inc. nor the names of its | |
15 * contributors may be used to endorse or promote products derived from | |
16 * this software without specific prior written permission. | |
17 * | |
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
29 */ | |
30 | |
31 #ifndef WebMIDIClient_h | |
32 #define WebMIDIClient_h | |
33 | |
34 namespace blink { | |
35 | |
36 struct WebMIDIOptions; | |
37 class WebMIDIPermissionRequest; | |
38 | |
39 class WebMIDIClient { | |
40 public: | |
41 virtual ~WebMIDIClient() { } | |
42 | |
43 // Request a permission to use MIDI system. Called when requestMIDIAccess() | |
44 // is called with any option. | |
45 // Once the request is done, any WebMIDIPermissionRequest instances equal to | |
46 // |request| must not be accessed after that. | |
47 virtual void requestPermission(const WebMIDIPermissionRequest& /* request */
, const WebMIDIOptions& /* options */) = 0; | |
48 | |
49 // Cancel the request since the requesting frame may be moving to | |
50 // a new page. | |
51 // Once canceled, any WebMIDIPermissionRequest instances equal to | |
52 // |request| must not be accessed after that. | |
53 virtual void cancelPermissionRequest(const WebMIDIPermissionRequest& /* requ
est */) = 0; | |
54 }; | |
55 | |
56 } // namespace blink | |
57 | |
58 #endif // WebMIDIClient_h | |
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