1/*
2 * Copyright (C) 2012 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/speech/DOMWindowSpeechSynthesis.h"
33
34#include "core/frame/LocalDOMWindow.h"
35#include "core/frame/LocalFrame.h"
36#include "wtf/PassRefPtr.h"
37
38namespace blink {
39
40DOMWindowSpeechSynthesis::DOMWindowSpeechSynthesis(LocalDOMWindow& window)
41    : DOMWindowProperty(window.frame())
42{
43}
44
45DEFINE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(DOMWindowSpeechSynthesis);
46
47const char* DOMWindowSpeechSynthesis::supplementName()
48{
49    return "DOMWindowSpeechSynthesis";
50}
51
52// static
53DOMWindowSpeechSynthesis& DOMWindowSpeechSynthesis::from(LocalDOMWindow& window)
54{
55    DOMWindowSpeechSynthesis* supplement = static_cast<DOMWindowSpeechSynthesis*>(WillBeHeapSupplement<LocalDOMWindow>::from(window, supplementName()));
56    if (!supplement) {
57        supplement = new DOMWindowSpeechSynthesis(window);
58        provideTo(window, supplementName(), adoptPtrWillBeNoop(supplement));
59    }
60    return *supplement;
61}
62
63// static
64SpeechSynthesis* DOMWindowSpeechSynthesis::speechSynthesis(LocalDOMWindow& window)
65{
66    return DOMWindowSpeechSynthesis::from(window).speechSynthesis();
67}
68
69SpeechSynthesis* DOMWindowSpeechSynthesis::speechSynthesis()
70{
71    if (!m_speechSynthesis && frame())
72        m_speechSynthesis = SpeechSynthesis::create(frame()->domWindow()->executionContext());
73    return m_speechSynthesis.get();
74}
75
76void DOMWindowSpeechSynthesis::trace(Visitor* visitor)
77{
78    visitor->trace(m_speechSynthesis);
79    WillBeHeapSupplement<LocalDOMWindow>::trace(visitor);
80    DOMWindowProperty::trace(visitor);
81}
82
83} // namespace blink
84