1 /* 2 * Copyright (C) 2006, 2007, 2009 Apple Inc. All rights reserved. 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Library General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Library General Public License for more details. 13 * 14 * You should have received a copy of the GNU Library General Public License 15 * along with this library; see the file COPYING.LIB. If not, write to 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 17 * Boston, MA 02110-1301, USA. 18 * 19 */ 20 21 #ifndef HTMLFrameOwnerElement_h 22 #define HTMLFrameOwnerElement_h 23 24 #include "core/html/HTMLElement.h" 25 #include "wtf/HashCountedSet.h" 26 27 namespace WebCore { 28 29 class DOMWindow; 30 class ExceptionState; 31 class Frame; 32 class RenderPart; 33 class SVGDocument; 34 35 class HTMLFrameOwnerElement : public HTMLElement { 36 public: 37 virtual ~HTMLFrameOwnerElement(); 38 contentFrame()39 Frame* contentFrame() const { return m_contentFrame; } 40 DOMWindow* contentWindow() const; 41 Document* contentDocument() const; 42 43 void setContentFrame(Frame&); 44 void clearContentFrame(); 45 46 void disconnectContentFrame(); 47 48 // Most subclasses use RenderPart (either RenderEmbeddedObject or RenderIFrame) 49 // except for HTMLObjectElement and HTMLEmbedElement which may return any 50 // RenderObject when using fallback content. 51 RenderPart* renderPart() const; 52 53 SVGDocument* getSVGDocument(ExceptionState&) const; 54 scrollingMode()55 virtual ScrollbarMode scrollingMode() const { return ScrollbarAuto; } 56 sandboxFlags()57 SandboxFlags sandboxFlags() const { return m_sandboxFlags; } 58 loadedNonEmptyDocument()59 virtual bool loadedNonEmptyDocument() const { return false; } didLoadNonEmptyDocument()60 virtual void didLoadNonEmptyDocument() { } 61 renderFallbackContent()62 virtual void renderFallbackContent() { } 63 isObjectElement()64 virtual bool isObjectElement() const { return false; } 65 66 protected: 67 HTMLFrameOwnerElement(const QualifiedName& tagName, Document&); 68 void setSandboxFlags(SandboxFlags); 69 70 bool loadOrRedirectSubframe(const KURL&, const AtomicString& frameName, bool lockBackForwardList); 71 72 private: 73 virtual bool isKeyboardFocusable() const OVERRIDE; isFrameOwnerElement()74 virtual bool isFrameOwnerElement() const OVERRIDE { return true; } 75 76 Frame* m_contentFrame; 77 SandboxFlags m_sandboxFlags; 78 }; 79 80 DEFINE_NODE_TYPE_CASTS(HTMLFrameOwnerElement, isFrameOwnerElement()); 81 82 class SubframeLoadingDisabler { 83 public: SubframeLoadingDisabler(Node & root)84 explicit SubframeLoadingDisabler(Node& root) 85 : m_root(root) 86 { 87 disabledSubtreeRoots().add(&m_root); 88 } 89 ~SubframeLoadingDisabler()90 ~SubframeLoadingDisabler() 91 { 92 disabledSubtreeRoots().remove(&m_root); 93 } 94 canLoadFrame(HTMLFrameOwnerElement & owner)95 static bool canLoadFrame(HTMLFrameOwnerElement& owner) 96 { 97 for (Node* node = &owner; node; node = node->parentOrShadowHostNode()) { 98 if (disabledSubtreeRoots().contains(node)) 99 return false; 100 } 101 return true; 102 } 103 104 private: disabledSubtreeRoots()105 static HashCountedSet<Node*>& disabledSubtreeRoots() 106 { 107 DEFINE_STATIC_LOCAL(HashCountedSet<Node*>, nodes, ()); 108 return nodes; 109 } 110 111 Node& m_root; 112 }; 113 114 } // namespace WebCore 115 116 #endif // HTMLFrameOwnerElement_h 117