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| 1 | +/* |
| 2 | + * Copyright (C) 2017 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 | + * |
| 8 | + * 1. Redistributions of source code must retain the above copyright |
| 9 | + * notice, this list of conditions and the following disclaimer. |
| 10 | + * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | + * notice, this list of conditions and the following disclaimer in the |
| 12 | + * documentation and/or other materials provided with the distribution. |
| 13 | + * 3. Neither the name of Apple Inc. ("Apple") nor the names of |
| 14 | + * its contributors may be used to endorse or promote products derived |
| 15 | + * from this software without specific prior written permission. |
| 16 | + * |
| 17 | + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY |
| 18 | + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 19 | + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 20 | + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
| 21 | + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 22 | + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 23 | + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 24 | + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 26 | + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | + */ |
| 28 | + |
| 29 | +#include "config.h" |
| 30 | + |
| 31 | +#if PLATFORM(IOS_FAMILY) |
| 32 | +#include "AccessibilityMediaHelpers.h" |
| 33 | + |
| 34 | +#include "AXObjectCache.h" |
| 35 | +#include "AccessibilityRenderObject.h" |
| 36 | +#include "HTMLMediaElement.h" |
| 37 | +#include "HTMLNames.h" |
| 38 | +#include "HTMLVideoElement.h" |
| 39 | +#include "LocalizedStrings.h" |
| 40 | + |
| 41 | +namespace WebCore { |
| 42 | + |
| 43 | +void AccessibilityMediaHelpers::enterFullscreen(HTMLVideoElement* videoElement) |
| 44 | +{ |
| 45 | + if (videoElement) |
| 46 | + videoElement->enterFullscreen(); |
| 47 | +} |
| 48 | + |
| 49 | +void AccessibilityMediaHelpers::toggleMute(HTMLMediaElement* mediaElement) |
| 50 | +{ |
| 51 | + if (mediaElement) |
| 52 | + mediaElement->setMuted(!mediaElement->muted()); |
| 53 | +} |
| 54 | + |
| 55 | +String AccessibilityMediaHelpers::interactiveVideoDuration(HTMLMediaElement* mediaElement) |
| 56 | +{ |
| 57 | + return mediaElement ? localizedMediaTimeDescription(mediaElement->duration()) : String(); |
| 58 | +} |
| 59 | + |
| 60 | +bool AccessibilityMediaHelpers::isPlaying(HTMLMediaElement* mediaElement) |
| 61 | +{ |
| 62 | + return mediaElement && mediaElement->isPlaying(); |
| 63 | +} |
| 64 | + |
| 65 | +bool AccessibilityMediaHelpers::isAutoplayEnabled(HTMLMediaElement* mediaElement) |
| 66 | +{ |
| 67 | + return mediaElement && mediaElement->autoplay(); |
| 68 | +} |
| 69 | + |
| 70 | +bool AccessibilityMediaHelpers::isMuted(HTMLMediaElement* mediaElement) |
| 71 | +{ |
| 72 | + return mediaElement && mediaElement->muted(); |
| 73 | +} |
| 74 | + |
| 75 | +bool AccessibilityMediaHelpers::press(HTMLMediaElement& mediaElement) |
| 76 | +{ |
| 77 | + // We can safely call the internal togglePlayState method, which doesn't check restrictions, |
| 78 | + // because this method is only called from user interaction. |
| 79 | + mediaElement.togglePlayState(); |
| 80 | + return true; |
| 81 | +} |
| 82 | + |
| 83 | +void AccessibilityMediaHelpers::increment(HTMLMediaElement& mediaElement) |
| 84 | +{ |
| 85 | + mediaSeek(mediaElement, AXSeekDirection::Forward); |
| 86 | +} |
| 87 | + |
| 88 | +void AccessibilityMediaHelpers::decrement(HTMLMediaElement& mediaElement) |
| 89 | +{ |
| 90 | + mediaSeek(mediaElement, AXSeekDirection::Backward); |
| 91 | +} |
| 92 | + |
| 93 | +void AccessibilityMediaHelpers::mediaSeek(HTMLMediaElement& mediaElement, AXSeekDirection direction) |
| 94 | +{ |
| 95 | + // Step 5% each time. |
| 96 | + constexpr double seekStep = .05; |
| 97 | + double current = mediaElement.currentTime(); |
| 98 | + double duration = mediaElement.duration(); |
| 99 | + double timeDelta = ceil(duration * seekStep); |
| 100 | + |
| 101 | + double time = direction == AXSeekDirection::Forward ? std::min(current + timeDelta, duration) : std::max(current - timeDelta, 0.0); |
| 102 | + mediaElement.setCurrentTime(time); |
| 103 | +} |
| 104 | + |
| 105 | +} // namespace WebCore |
| 106 | + |
| 107 | +#endif // PLATFORM(IOS_FAMILY) |
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