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 "FrameLoaderTypes.h" 25#include "HTMLElement.h" 26#include <wtf/HashCountedSet.h> 27 28namespace WebCore { 29 30class DOMWindow; 31class Frame; 32class RenderPart; 33 34#if ENABLE(SVG) 35class SVGDocument; 36#endif 37 38class HTMLFrameOwnerElement : public HTMLElement { 39public: 40 virtual ~HTMLFrameOwnerElement(); 41 42 Frame* contentFrame() const { return m_contentFrame; } 43 DOMWindow* contentWindow() const; 44 Document* contentDocument() const; 45 46 void setContentFrame(Frame*); 47 void clearContentFrame(); 48 49 void disconnectContentFrame(); 50 51 // Most subclasses use RenderPart (either RenderEmbeddedObject or RenderIFrame) 52 // except for HTMLObjectElement and HTMLEmbedElement which may return any 53 // RenderObject when using fallback content. 54 RenderPart* renderPart() const; 55 56#if ENABLE(SVG) 57 SVGDocument* getSVGDocument(ExceptionCode&) const; 58#endif 59 60 virtual ScrollbarMode scrollingMode() const { return ScrollbarAuto; } 61 62 SandboxFlags sandboxFlags() const { return m_sandboxFlags; } 63 64protected: 65 HTMLFrameOwnerElement(const QualifiedName& tagName, Document*); 66 void setSandboxFlags(SandboxFlags); 67 68private: 69 virtual bool isKeyboardFocusable(KeyboardEvent*) const OVERRIDE; 70 virtual bool isFrameOwnerElement() const OVERRIDE { return true; } 71 72 Frame* m_contentFrame; 73 SandboxFlags m_sandboxFlags; 74}; 75 76inline HTMLFrameOwnerElement* toFrameOwnerElement(Node* node) 77{ 78 ASSERT_WITH_SECURITY_IMPLICATION(!node || node->isFrameOwnerElement()); 79 return static_cast<HTMLFrameOwnerElement*>(node); 80} 81 82class SubframeLoadingDisabler { 83public: 84 explicit SubframeLoadingDisabler(Node* root) 85 : m_root(root) 86 { 87 disabledSubtreeRoots().add(m_root); 88 } 89 90 ~SubframeLoadingDisabler() 91 { 92 disabledSubtreeRoots().remove(m_root); 93 } 94 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 104private: 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