1/*
2 * Copyright (C) 2012, 2013 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. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef CaptionUserPreferencesMediaAF_h
27#define CaptionUserPreferencesMediaAF_h
28
29#if ENABLE(VIDEO_TRACK)
30
31#include "CSSPropertyNames.h"
32#include "CaptionUserPreferences.h"
33#include "Color.h"
34#include <wtf/HashSet.h>
35
36namespace WebCore {
37
38class CaptionUserPreferencesMediaAF : public CaptionUserPreferences {
39public:
40    CaptionUserPreferencesMediaAF(PageGroup&);
41    virtual ~CaptionUserPreferencesMediaAF();
42
43#if HAVE(MEDIA_ACCESSIBILITY_FRAMEWORK)
44    virtual CaptionDisplayMode captionDisplayMode() const override;
45    virtual void setCaptionDisplayMode(CaptionDisplayMode) override;
46
47    virtual bool userPrefersCaptions() const override;
48    virtual bool userPrefersSubtitles() const override;
49
50    virtual float captionFontSizeScaleAndImportance(bool&) const override;
51
52    virtual void setInterestedInCaptionPreferenceChanges() override;
53
54    virtual void setPreferredLanguage(const String&) override;
55    virtual Vector<String> preferredLanguages() const override;
56
57    virtual void captionPreferencesChanged() override;
58
59    bool shouldFilterTrackMenu() const { return true; }
60#else
61    bool shouldFilterTrackMenu() const { return false; }
62#endif
63
64    virtual String captionsStyleSheetOverride() const override;
65    virtual int textTrackSelectionScore(TextTrack*, HTMLMediaElement*) const override;
66    virtual Vector<RefPtr<TextTrack>> sortedTrackListForMenu(TextTrackList*) override;
67    virtual String displayNameForTrack(TextTrack*) const override;
68
69private:
70#if HAVE(MEDIA_ACCESSIBILITY_FRAMEWORK)
71    String captionsWindowCSS() const;
72    String captionsBackgroundCSS() const;
73    String captionsTextColorCSS() const;
74    Color captionsTextColor(bool&) const;
75    String captionsDefaultFontCSS() const;
76    Color captionsEdgeColorForTextColor(const Color&) const;
77    String windowRoundedCornerRadiusCSS() const;
78    String captionsTextEdgeCSS() const;
79    String cssPropertyWithTextEdgeColor(CSSPropertyID, const String&, const Color&, bool) const;
80    String colorPropertyCSS(CSSPropertyID, const Color&, bool) const;
81
82    bool m_listeningForPreferenceChanges;
83#endif
84};
85
86}
87#endif
88
89#endif
90