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 are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this 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 HTMLImportChild_h 32 #define HTMLImportChild_h 33 34 #include "core/html/imports/HTMLImport.h" 35 #include "platform/heap/Handle.h" 36 #include "platform/weborigin/KURL.h" 37 #include "wtf/WeakPtr.h" 38 39 namespace blink { 40 41 class CustomElementMicrotaskImportStep; 42 class HTMLImportLoader; 43 class HTMLImportChildClient; 44 class HTMLLinkElement; 45 46 // 47 // An import tree node subclas to encapsulate imported document 48 // lifecycle. This class is owned by HTMLImportsController. The actual loading 49 // is done by HTMLImportLoader, which can be shared among multiple 50 // HTMLImportChild of same link URL. 51 // 52 class HTMLImportChild FINAL : public HTMLImport { 53 public: 54 HTMLImportChild(const KURL&, HTMLImportLoader*, SyncMode); 55 virtual ~HTMLImportChild(); 56 57 HTMLLinkElement* link() const; 58 const KURL& url() const { return m_url; } 59 60 void ownerInserted(); 61 void didShareLoader(); 62 void didStartLoading(); 63 #if !ENABLE(OILPAN) 64 void importDestroyed(); 65 WeakPtr<HTMLImportChild> weakPtr() { return m_weakFactory.createWeakPtr(); } 66 #endif 67 68 // HTMLImport 69 virtual Document* document() const OVERRIDE; 70 virtual bool isDone() const OVERRIDE; 71 virtual HTMLImportLoader* loader() const OVERRIDE; 72 virtual void stateWillChange() OVERRIDE; 73 virtual void stateDidChange() OVERRIDE; 74 virtual void trace(Visitor*) OVERRIDE; 75 76 #if !defined(NDEBUG) 77 virtual void showThis() OVERRIDE; 78 #endif 79 80 void setClient(HTMLImportChildClient*); 81 #if !ENABLE(OILPAN) 82 void clearClient(); 83 #endif 84 85 void didFinishLoading(); 86 void didFinishUpgradingCustomElements(); 87 void normalize(); 88 89 private: 90 void didFinish(); 91 void shareLoader(); 92 void createCustomElementMicrotaskStepIfNeeded(); 93 void invalidateCustomElementMicrotaskStep(); 94 95 KURL m_url; 96 WeakPtrWillBeWeakMember<CustomElementMicrotaskImportStep> m_customElementMicrotaskStep; 97 #if !ENABLE(OILPAN) 98 WeakPtrFactory<HTMLImportChild> m_weakFactory; 99 #endif 100 RawPtrWillBeMember<HTMLImportLoader> m_loader; 101 RawPtrWillBeMember<HTMLImportChildClient> m_client; 102 }; 103 104 inline HTMLImportChild* toHTMLImportChild(HTMLImport* import) 105 { 106 ASSERT(!import || !import->isRoot()); 107 return static_cast<HTMLImportChild*>(import); 108 } 109 110 } // namespace blink 111 112 #endif // HTMLImportChild_h 113