1/*
2 * Copyright (C) 2019 Apple 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
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#if ENABLE(SPEECH_SYNTHESIS)
29
30#include <wtf/WeakPtr.h>
31
32namespace WebCore {
33
34class PlatformSpeechSynthesisUtterance;
35class SpeechSynthesisClientObserver;
36class PlatformSpeechSynthesisVoice;
37
38class SpeechSynthesisClient : public CanMakeWeakPtr<SpeechSynthesisClient> {
39public:
40 virtual ~SpeechSynthesisClient() = default;
41
42 virtual void setObserver(WeakPtr<SpeechSynthesisClientObserver>) = 0;
43 virtual WeakPtr<SpeechSynthesisClientObserver> observer() const = 0;
44
45 virtual const Vector<RefPtr<PlatformSpeechSynthesisVoice>>& voiceList() = 0;
46 virtual void speak(RefPtr<PlatformSpeechSynthesisUtterance>) = 0;
47 virtual void cancel() = 0;
48 virtual void pause() = 0;
49 virtual void resume() = 0;
50
51};
52
53class SpeechSynthesisClientObserver : public CanMakeWeakPtr<SpeechSynthesisClientObserver> {
54public:
55 virtual ~SpeechSynthesisClientObserver() = default;
56
57 virtual void didStartSpeaking() = 0;
58 virtual void didFinishSpeaking() = 0;
59 virtual void didPauseSpeaking() = 0;
60 virtual void didResumeSpeaking() = 0;
61 virtual void speakingErrorOccurred() = 0;
62 virtual void boundaryEventOccurred(bool wordBoundary, unsigned charIndex) = 0;
63 virtual void voicesChanged() = 0;
64};
65
66} // namespace WebCore
67
68#endif // ENABLE(SPEECH_SYNTHESIS)
69