FrameActionScheduler.cpp [plain text]
#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()
{
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)));
}
}