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/*
* Copyright (C) 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
* Copyright (C) 2012 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_HTML_TRACK_TEXT_TRACK_CONTAINER_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_HTML_TRACK_TEXT_TRACK_CONTAINER_H_
#include "third_party/blink/renderer/core/html/html_div_element.h"
namespace blink {
class HTMLMediaElement;
class TextTrackContainer final : public HTMLDivElement {
public:
static TextTrackContainer* Create(HTMLMediaElement&);
// Runs the "rules for updating the text track rendering". The
// ExposingControls enum is used in the WebVTT processing model to reset the
// layout when the media controls become visible, to avoid overlapping them.
enum ExposingControls {
kDidNotStartExposingControls,
kDidStartExposingControls
};
void UpdateDisplay(HTMLMediaElement&, ExposingControls);
void UpdateDefaultFontSize(LayoutObject*);
void Trace(blink::Visitor*) override;
private:
TextTrackContainer(Document&);
bool IsTextTrackContainer() const override { return true; }
void ObserveSizeChanges(Element&);
LayoutObject* CreateLayoutObject(const ComputedStyle&) override;
Member<ResizeObserver> video_size_observer_;
float default_font_size_;
};
DEFINE_ELEMENT_TYPE_CASTS(TextTrackContainer, IsTextTrackContainer());
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_HTML_TRACK_TEXT_TRACK_CONTAINER_H_