blob: 42b50b710b825de4b2ed01f2185df82c4629db90 [file] [log] [blame]
/*
* Copyright (C) 2011 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:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``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 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "FrameActionScheduler.h"
#include "Event.h"
#include "ExceptionCodePlaceholder.h"
#include "Node.h"
#include <wtf/Vector.h>
namespace WebCore {
class EventFrameAction : public FrameAction {
public:
EventFrameAction(PassRefPtr<Event> event, PassRefPtr<Node> target)
: m_event(event)
, m_eventTarget(target)
{
}
virtual void fire()
{
// Only dispatch events to nodes that are in the document
if (m_eventTarget->inDocument())
m_eventTarget->dispatchEvent(m_event, IGNORE_EXCEPTION);
}
private:
RefPtr<Event> m_event;
RefPtr<Node> m_eventTarget;
};
FrameActionScheduler::FrameActionScheduler()
: m_enqueueActions(0)
{
}
FrameActionScheduler::~FrameActionScheduler()
{
clear();
}
bool FrameActionScheduler::isEmpty() const
{
return m_scheduledActions.isEmpty();
}
void FrameActionScheduler::clear()
{
m_scheduledActions.clear();
m_enqueueActions = 0;
}
void FrameActionScheduler::pause()
{
ASSERT(isEmpty() || m_enqueueActions);
m_enqueueActions++;
}
void FrameActionScheduler::resume()
{
m_enqueueActions--;
if (!m_enqueueActions)
dispatch();
ASSERT(isEmpty() || m_enqueueActions);
}
void FrameActionScheduler::dispatch()
{
Vector< OwnPtr<FrameAction> > snapshot;
m_scheduledActions.swap(snapshot);
for (Vector< OwnPtr<FrameAction> >::iterator i = snapshot.begin(); i != snapshot.end(); ++i)
(*i)->fire();
}
void FrameActionScheduler::scheduleAction(PassOwnPtr<FrameAction> action)
{
m_scheduledActions.append(action);
}
void FrameActionScheduler::scheduleEvent(PassRefPtr<Event> event, PassRefPtr<Node> eventTarget)
{
scheduleAction(adoptPtr(new EventFrameAction(event, eventTarget)));
}
} // namespace WebCore