• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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 #include "config.h"
32 #include "modules/webmidi/NavigatorWebMIDI.h"
33 
34 #include "bindings/core/v8/ScriptPromise.h"
35 #include "bindings/core/v8/ScriptPromiseResolver.h"
36 #include "core/dom/DOMError.h"
37 #include "core/dom/Document.h"
38 #include "core/frame/LocalFrame.h"
39 #include "core/frame/Navigator.h"
40 #include "modules/webmidi/MIDIAccessInitializer.h"
41 #include "modules/webmidi/MIDIOptions.h"
42 
43 namespace blink {
44 
NavigatorWebMIDI(LocalFrame * frame)45 NavigatorWebMIDI::NavigatorWebMIDI(LocalFrame* frame)
46     : DOMWindowProperty(frame)
47 {
48 }
49 
50 DEFINE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(NavigatorWebMIDI);
51 
trace(Visitor * visitor)52 void NavigatorWebMIDI::trace(Visitor* visitor)
53 {
54     WillBeHeapSupplement<Navigator>::trace(visitor);
55     DOMWindowProperty::trace(visitor);
56 }
57 
supplementName()58 const char* NavigatorWebMIDI::supplementName()
59 {
60     return "NavigatorWebMIDI";
61 }
62 
from(Navigator & navigator)63 NavigatorWebMIDI& NavigatorWebMIDI::from(Navigator& navigator)
64 {
65     NavigatorWebMIDI* supplement = static_cast<NavigatorWebMIDI*>(WillBeHeapSupplement<Navigator>::from(navigator, supplementName()));
66     if (!supplement) {
67         supplement = new NavigatorWebMIDI(navigator.frame());
68         provideTo(navigator, supplementName(), adoptPtrWillBeNoop(supplement));
69     }
70     return *supplement;
71 }
72 
requestMIDIAccess(ScriptState * scriptState,Navigator & navigator,const MIDIOptions & options)73 ScriptPromise NavigatorWebMIDI::requestMIDIAccess(ScriptState* scriptState, Navigator& navigator, const MIDIOptions& options)
74 {
75     return NavigatorWebMIDI::from(navigator).requestMIDIAccess(scriptState, options);
76 }
77 
requestMIDIAccess(ScriptState * scriptState,const MIDIOptions & options)78 ScriptPromise NavigatorWebMIDI::requestMIDIAccess(ScriptState* scriptState, const MIDIOptions& options)
79 {
80     if (!frame() || frame()->document()->activeDOMObjectsAreStopped()) {
81         RefPtr<ScriptPromiseResolver> resolver = ScriptPromiseResolver::create(scriptState);
82         ScriptPromise promise = resolver->promise();
83         // FIXME: Currently this rejection does not work because the context is stopped.
84         resolver->reject(DOMError::create("AbortError"));
85         return promise;
86     }
87 
88     return MIDIAccessInitializer::start(scriptState, options);
89 }
90 
91 } // namespace blink
92