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Diffstat (limited to 'Source/WebCore/dom/ScopedEventQueue.h')
-rw-r--r-- | Source/WebCore/dom/ScopedEventQueue.h | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/Source/WebCore/dom/ScopedEventQueue.h b/Source/WebCore/dom/ScopedEventQueue.h new file mode 100644 index 0000000..52415d4 --- /dev/null +++ b/Source/WebCore/dom/ScopedEventQueue.h @@ -0,0 +1,77 @@ +/* + * Copyright (C) 2010 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. + * * Neither the name of Google Inc. 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 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 + * 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. + */ + +#ifndef ScopedEventQueue_h +#define ScopedEventQueue_h + +#include <wtf/Noncopyable.h> +#include <wtf/PassOwnPtr.h> +#include <wtf/PassRefPtr.h> +#include <wtf/Vector.h> + +namespace WebCore { + +class Event; + +class ScopedEventQueue { + WTF_MAKE_NONCOPYABLE(ScopedEventQueue); + +public: + ~ScopedEventQueue(); + + void enqueueEvent(PassRefPtr<Event>); + void dispatchAllEvents(); + static ScopedEventQueue* instance(); + + void incrementScopingLevel(); + void decrementScopingLevel(); + +private: + ScopedEventQueue(); + static void initialize(); + void dispatchEvent(PassRefPtr<Event>) const; + + Vector<RefPtr<Event> > m_queuedEvents; + unsigned m_scopingLevel; + + static ScopedEventQueue* s_instance; +}; + +class EventQueueScope { + WTF_MAKE_NONCOPYABLE(EventQueueScope); + +public: + EventQueueScope() { ScopedEventQueue::instance()->incrementScopingLevel(); } + ~EventQueueScope() { ScopedEventQueue::instance()->decrementScopingLevel(); } +}; + +} + +#endif // ScopedEventQueue_h |