Source/modules/mediasource/WebKitSourceBufferList.cpp

/*
 * Copyright (C) 2012 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
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 * in the documentation and/or other materials provided with the
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 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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#include "config.h"
#include "modules/mediasource/WebKitSourceBufferList.h"

#include "core/events/Event.h"
#include "core/events/GenericEventQueue.h"
#include "modules/mediasource/WebKitSourceBuffer.h"

namespace WebCore {

WebKitSourceBufferList::WebKitSourceBufferList(ExecutionContext* context, GenericEventQueue* asyncEventQueue)
    : m_executionContext(context)
    , m_asyncEventQueue(asyncEventQueue)
{
    ScriptWrappable::init(this);
}

unsigned long WebKitSourceBufferList::length() const
{
    return m_list.size();
}

WebKitSourceBuffer* WebKitSourceBufferList::item(unsigned index) const
{
    if (index >= m_list.size())
        return 0;
    return m_list[index].get();
}

void WebKitSourceBufferList::add(PassRefPtr<WebKitSourceBuffer> buffer)
{
    m_list.append(buffer);
    createAndFireEvent(EventTypeNames::webkitaddsourcebuffer);
}

bool WebKitSourceBufferList::remove(WebKitSourceBuffer* buffer)
{
    size_t index = m_list.find(buffer);
    if (index == kNotFound)
        return false;

    buffer->removedFromMediaSource();
    m_list.remove(index);
    createAndFireEvent(EventTypeNames::webkitremovesourcebuffer);
    return true;
}

void WebKitSourceBufferList::clear()
{
    for (size_t i = 0; i < m_list.size(); ++i)
        m_list[i]->removedFromMediaSource();
    m_list.clear();
    createAndFireEvent(EventTypeNames::webkitremovesourcebuffer);
}

void WebKitSourceBufferList::createAndFireEvent(const AtomicString& eventName)
{
    ASSERT(m_asyncEventQueue);

    RefPtr<Event> event = Event::create(eventName);
    event->setTarget(this);

    m_asyncEventQueue->enqueueEvent(event.release());
}

const AtomicString& WebKitSourceBufferList::interfaceName() const
{
    return EventTargetNames::WebKitSourceBufferList;
}

ExecutionContext* WebKitSourceBufferList::executionContext() const
{
    return m_executionContext;
}

} // namespace WebCore