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/*
* Copyright (C) 2013 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:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. 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 CustomElementScheduler_h
#define CustomElementScheduler_h
#include "core/dom/custom/CustomElementCallbackQueue.h"
#include "core/dom/custom/CustomElementLifecycleCallbacks.h"
#include "platform/heap/Handle.h"
#include "wtf/HashMap.h"
#include "wtf/OwnPtr.h"
#include "wtf/PassRefPtr.h"
#include "wtf/text/AtomicString.h"
namespace WebCore {
class CustomElementDescriptor;
class CustomElementMicrotaskImportStep;
class CustomElementRegistrationContext;
class Element;
class HTMLImportChild;
class CustomElementScheduler FINAL : public NoBaseWillBeGarbageCollected<CustomElementScheduler> {
DECLARE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(CustomElementScheduler);
public:
static void scheduleCallback(PassRefPtr<CustomElementLifecycleCallbacks>, PassRefPtrWillBeRawPtr<Element>, CustomElementLifecycleCallbacks::CallbackType);
static void scheduleAttributeChangedCallback(PassRefPtr<CustomElementLifecycleCallbacks>, PassRefPtrWillBeRawPtr<Element>, const AtomicString& name, const AtomicString& oldValue, const AtomicString& newValue);
static void resolveOrScheduleResolution(PassRefPtrWillBeRawPtr<CustomElementRegistrationContext>, PassRefPtrWillBeRawPtr<Element>, const CustomElementDescriptor&);
static CustomElementMicrotaskImportStep* scheduleImport(HTMLImportChild*);
static void microtaskDispatcherDidFinish();
static void callbackDispatcherDidFinish();
void trace(Visitor*);
private:
CustomElementScheduler() { }
static CustomElementScheduler& instance();
CustomElementCallbackQueue& ensureCallbackQueue(PassRefPtrWillBeRawPtr<Element>);
CustomElementCallbackQueue& schedule(PassRefPtrWillBeRawPtr<Element>);
// FIXME: Consider moving the element's callback queue to
// ElementRareData. Then the scheduler can become completely
// static.
void clearElementCallbackQueueMap();
// The element -> callback queue map is populated by the scheduler
// and owns the lifetimes of the CustomElementCallbackQueues.
typedef WillBeHeapHashMap<RawPtrWillBeMember<Element>, OwnPtrWillBeMember<CustomElementCallbackQueue> > ElementCallbackQueueMap;
ElementCallbackQueueMap m_elementCallbackQueueMap;
};
}
#endif // CustomElementScheduler_h
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