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 HTMLImport_h 32 #define HTMLImport_h 33 34 #include "wtf/Vector.h" 35 36 namespace WebCore { 37 38 class Frame; 39 class Document; 40 class Frame; 41 class HTMLImportRoot; 42 class HTMLImportsController; 43 44 class HTMLImport { 45 public: 46 static bool unblock(HTMLImport*); 47 48 virtual ~HTMLImport() { } 49 50 Frame* frame(); 51 Document* master(); 52 HTMLImportsController* controller(); 53 54 bool isLoaded() const { return !isBlocked() && !isProcessing(); } 55 bool isBlocked() const { return m_blocked; } 56 void appendChild(HTMLImport*); 57 58 virtual HTMLImportRoot* root() = 0; 59 virtual HTMLImport* parent() const = 0; 60 virtual Document* document() const = 0; 61 virtual void wasDetachedFromDocument() = 0; 62 virtual void didFinishParsing() = 0; 63 virtual bool isProcessing() const = 0; 64 65 protected: 66 HTMLImport() 67 : m_blocked(false) 68 { } 69 70 private: 71 static void block(HTMLImport*); 72 73 void blockAfter(HTMLImport* child); 74 void block(); 75 void unblock(); 76 void didUnblock(); 77 78 bool arePredecessorsLoaded() const; 79 bool areChilrenLoaded() const; 80 bool hasChildren() const { return !m_children.isEmpty(); } 81 82 Vector<HTMLImport*> m_children; 83 bool m_blocked; // If any of decendants or predecessors is in processing, it is blocked. 84 }; 85 86 class HTMLImportRoot : public HTMLImport { 87 public: 88 virtual void importWasDisposed() = 0; 89 virtual HTMLImportsController* toController() = 0; 90 }; 91 92 } // namespace WebCore 93 94 #endif // HTMLImport_h 95