#if ENABLE(FONT_LOAD_EVENTS)
#ifndef FontLoader_h
#define FontLoader_h
#include "ActiveDOMObject.h"
#include "EventListener.h"
#include "EventNames.h"
#include "EventTarget.h"
#include "VoidCallback.h"
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/Vector.h>
namespace WebCore {
class CachedFont;
class CSSFontFaceRule;
class CSSFontFaceSource;
class Dictionary;
class Document;
class Event;
class Font;
class ScriptExecutionContext;
class FontLoader : public RefCounted<FontLoader>, public ActiveDOMObject, public EventTarget {
public:
static PassRefPtr<FontLoader> create(Document* document)
{
return adoptRef<FontLoader>(new FontLoader(document));
}
virtual ~FontLoader();
DEFINE_ATTRIBUTE_EVENT_LISTENER(loading);
DEFINE_ATTRIBUTE_EVENT_LISTENER(loadingdone);
DEFINE_ATTRIBUTE_EVENT_LISTENER(loadstart);
DEFINE_ATTRIBUTE_EVENT_LISTENER(load);
DEFINE_ATTRIBUTE_EVENT_LISTENER(error);
bool checkFont(const String&, const String&);
void loadFont(const Dictionary&);
void notifyWhenFontsReady(PassRefPtr<VoidCallback>);
bool loading() const { return m_loadingCount > 0; }
virtual ScriptExecutionContext* scriptExecutionContext() const;
virtual const AtomicString& interfaceName() const;
using RefCounted<FontLoader>::ref;
using RefCounted<FontLoader>::deref;
Document* document() const { return m_document; }
void didLayout();
void beginFontLoading(CSSFontFaceRule*);
void fontLoaded(CSSFontFaceRule*);
void loadError(CSSFontFaceRule*, CSSFontFaceSource*);
void loadingDone();
private:
FontLoader(Document*);
virtual void refEventTarget() { ref(); }
virtual void derefEventTarget() { deref(); }
virtual EventTargetData* eventTargetData();
virtual EventTargetData* ensureEventTargetData();
void scheduleEvent(PassRefPtr<Event>);
void firePendingEvents();
bool resolveFontStyle(const String&, Font&);
Document* m_document;
EventTargetData m_eventTargetData;
unsigned m_loadingCount;
Vector<RefPtr<Event> > m_pendingEvents;
Vector<RefPtr<VoidCallback> > m_callbacks;
RefPtr<Event> m_loadingDoneEvent;
};
}
#endif // FontLoader_h
#endif // ENABLE(FONT_LOAD_EVENTS)