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
43namespace blink {
44
45NavigatorWebMIDI::NavigatorWebMIDI(LocalFrame* frame)
46    : DOMWindowProperty(frame)
47{
48}
49
50DEFINE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(NavigatorWebMIDI);
51
52void NavigatorWebMIDI::trace(Visitor* visitor)
53{
54    WillBeHeapSupplement<Navigator>::trace(visitor);
55    DOMWindowProperty::trace(visitor);
56}
57
58const char* NavigatorWebMIDI::supplementName()
59{
60    return "NavigatorWebMIDI";
61}
62
63NavigatorWebMIDI& 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
73ScriptPromise NavigatorWebMIDI::requestMIDIAccess(ScriptState* scriptState, Navigator& navigator, const MIDIOptions& options)
74{
75    return NavigatorWebMIDI::from(navigator).requestMIDIAccess(scriptState, options);
76}
77
78ScriptPromise 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