1/*
2 * Copyright (C) 2010 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 "SpeechInput.h"
33
34#if ENABLE(INPUT_SPEECH)
35
36#include "SecurityOrigin.h"
37#include "SpeechInputClient.h"
38#include "SpeechInputListener.h"
39#include <wtf/PassOwnPtr.h>
40
41namespace WebCore {
42
43SpeechInput::SpeechInput(SpeechInputClient* client)
44    : m_client(client)
45    , m_nextListenerId(1)
46{
47    m_client->setListener(this);
48}
49
50SpeechInput::~SpeechInput()
51{
52    m_client->setListener(0);
53}
54
55PassOwnPtr<SpeechInput> SpeechInput::create(SpeechInputClient* client)
56{
57    return adoptPtr(new SpeechInput(client));
58}
59
60int SpeechInput::registerListener(SpeechInputListener* listener)
61{
62#if defined(DEBUG)
63    // Check if already present.
64    for (HashMap<int, SpeechInputListener*>::iterator it = m_listeners.begin(); it != m_listeners.end(); ++it)
65      ASSERT(it->value != listener);
66#endif
67
68    m_listeners.add(m_nextListenerId, listener);
69    return m_nextListenerId++;
70}
71
72void SpeechInput::unregisterListener(int listenerId)
73{
74    if (m_listeners.contains(listenerId))
75        m_listeners.remove(listenerId);
76}
77
78void SpeechInput::didCompleteRecording(int listenerId)
79{
80    // Don't assert if not present as the element might have been removed by the page while
81    // this event was on the way.
82    if (m_listeners.contains(listenerId))
83        m_listeners.get(listenerId)->didCompleteRecording(listenerId);
84}
85
86void SpeechInput::didCompleteRecognition(int listenerId)
87{
88    // Don't assert if not present as the element might have been removed by the page while
89    // this event was on the way.
90    if (m_listeners.contains(listenerId))
91        m_listeners.get(listenerId)->didCompleteRecognition(listenerId);
92}
93
94void SpeechInput::setRecognitionResult(int listenerId, const SpeechInputResultArray& result)
95{
96    // Don't assert if not present as the element might have been removed by the page while
97    // this event was on the way.
98    if (m_listeners.contains(listenerId))
99        m_listeners.get(listenerId)->setRecognitionResult(listenerId, result);
100}
101
102bool SpeechInput::startRecognition(int listenerId, const IntRect& elementRect, const AtomicString& language, const String& grammar, SecurityOrigin* origin)
103{
104    ASSERT(m_listeners.contains(listenerId));
105    return m_client->startRecognition(listenerId, elementRect, language, grammar, origin);
106}
107
108void SpeechInput::stopRecording(int listenerId)
109{
110    ASSERT(m_listeners.contains(listenerId));
111    m_client->stopRecording(listenerId);
112}
113
114void SpeechInput::cancelRecognition(int listenerId)
115{
116    ASSERT(m_listeners.contains(listenerId));
117    m_client->cancelRecognition(listenerId);
118}
119
120const char* SpeechInput::supplementName()
121{
122    return "SpeechInput";
123}
124
125void provideSpeechInputTo(Page* page, SpeechInputClient* client)
126{
127    SpeechInput::provideTo(page, SpeechInput::supplementName(), SpeechInput::create(client));
128}
129
130} // namespace WebCore
131
132#endif // ENABLE(INPUT_SPEECH)
133