1 /* 2 * Copyright (C) 2013 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * 3. Neither the name of Google Inc. nor the names of its contributors 15 * may be used to endorse or promote products derived from this 16 * software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef CustomElementScheduler_h 32 #define CustomElementScheduler_h 33 34 #include "core/dom/custom/CustomElementCallbackQueue.h" 35 #include "core/dom/custom/CustomElementLifecycleCallbacks.h" 36 #include "platform/heap/Handle.h" 37 #include "wtf/HashMap.h" 38 #include "wtf/OwnPtr.h" 39 #include "wtf/PassRefPtr.h" 40 #include "wtf/text/AtomicString.h" 41 42 namespace WebCore { 43 44 class CustomElementDescriptor; 45 class CustomElementMicrotaskImportStep; 46 class CustomElementRegistrationContext; 47 class Element; 48 class HTMLImportChild; 49 50 class CustomElementScheduler FINAL : public NoBaseWillBeGarbageCollected<CustomElementScheduler> { 51 DECLARE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(CustomElementScheduler); 52 public: 53 54 static void scheduleCallback(PassRefPtr<CustomElementLifecycleCallbacks>, PassRefPtrWillBeRawPtr<Element>, CustomElementLifecycleCallbacks::CallbackType); 55 static void scheduleAttributeChangedCallback(PassRefPtr<CustomElementLifecycleCallbacks>, PassRefPtrWillBeRawPtr<Element>, const AtomicString& name, const AtomicString& oldValue, const AtomicString& newValue); 56 57 static void resolveOrScheduleResolution(PassRefPtrWillBeRawPtr<CustomElementRegistrationContext>, PassRefPtrWillBeRawPtr<Element>, const CustomElementDescriptor&); 58 static CustomElementMicrotaskImportStep* scheduleImport(HTMLImportChild*); 59 60 static void microtaskDispatcherDidFinish(); 61 static void callbackDispatcherDidFinish(); 62 63 void trace(Visitor*); 64 65 private: 66 CustomElementScheduler() { } 67 68 static CustomElementScheduler& instance(); 69 70 CustomElementCallbackQueue& ensureCallbackQueue(PassRefPtrWillBeRawPtr<Element>); 71 CustomElementCallbackQueue& schedule(PassRefPtrWillBeRawPtr<Element>); 72 73 // FIXME: Consider moving the element's callback queue to 74 // ElementRareData. Then the scheduler can become completely 75 // static. 76 void clearElementCallbackQueueMap(); 77 78 // The element -> callback queue map is populated by the scheduler 79 // and owns the lifetimes of the CustomElementCallbackQueues. 80 typedef WillBeHeapHashMap<RawPtrWillBeMember<Element>, OwnPtrWillBeMember<CustomElementCallbackQueue> > ElementCallbackQueueMap; 81 ElementCallbackQueueMap m_elementCallbackQueueMap; 82 }; 83 84 } 85 86 #endif // CustomElementScheduler_h 87
