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#include "config.h" 22#include "HTMLFrameOwnerElement.h" 23 24#include "DOMWindow.h" 25#include "Frame.h" 26#include "FrameLoader.h" 27#include "RenderPart.h" 28 29#if ENABLE(SVG) 30#include "ExceptionCode.h" 31#include "SVGDocument.h" 32#endif 33 34namespace WebCore { 35 36HTMLFrameOwnerElement::HTMLFrameOwnerElement(const QualifiedName& tagName, Document* document) 37 : HTMLElement(tagName, document) 38 , m_contentFrame(0) 39 , m_sandboxFlags(SandboxNone) 40{ 41} 42 43RenderPart* HTMLFrameOwnerElement::renderPart() const 44{ 45 // HTMLObjectElement and HTMLEmbedElement may return arbitrary renderers 46 // when using fallback content. 47 if (!renderer() || !renderer()->isRenderPart()) 48 return 0; 49 return toRenderPart(renderer()); 50} 51 52void HTMLFrameOwnerElement::setContentFrame(Frame* frame) 53{ 54 // Make sure we will not end up with two frames referencing the same owner element. 55 ASSERT(!m_contentFrame || m_contentFrame->ownerElement() != this); 56 ASSERT(frame); 57 // Disconnected frames should not be allowed to load. 58 ASSERT(inDocument()); 59 m_contentFrame = frame; 60 61 for (ContainerNode* node = this; node; node = node->parentOrShadowHostNode()) 62 node->incrementConnectedSubframeCount(); 63} 64 65void HTMLFrameOwnerElement::clearContentFrame() 66{ 67 if (!m_contentFrame) 68 return; 69 70 m_contentFrame = 0; 71 72 for (ContainerNode* node = this; node; node = node->parentOrShadowHostNode()) 73 node->decrementConnectedSubframeCount(); 74} 75 76void HTMLFrameOwnerElement::disconnectContentFrame() 77{ 78 // FIXME: Currently we don't do this in removedFrom because this causes an 79 // unload event in the subframe which could execute script that could then 80 // reach up into this document and then attempt to look back down. We should 81 // see if this behavior is really needed as Gecko does not allow this. 82 if (Frame* frame = contentFrame()) { 83 RefPtr<Frame> protect(frame); 84 frame->loader()->frameDetached(); 85 frame->disconnectOwnerElement(); 86 } 87} 88 89HTMLFrameOwnerElement::~HTMLFrameOwnerElement() 90{ 91 if (m_contentFrame) 92 m_contentFrame->disconnectOwnerElement(); 93} 94 95Document* HTMLFrameOwnerElement::contentDocument() const 96{ 97 return m_contentFrame ? m_contentFrame->document() : 0; 98} 99 100DOMWindow* HTMLFrameOwnerElement::contentWindow() const 101{ 102 return m_contentFrame ? m_contentFrame->document()->domWindow() : 0; 103} 104 105void HTMLFrameOwnerElement::setSandboxFlags(SandboxFlags flags) 106{ 107 m_sandboxFlags = flags; 108} 109 110bool HTMLFrameOwnerElement::isKeyboardFocusable(KeyboardEvent* event) const 111{ 112 return m_contentFrame && HTMLElement::isKeyboardFocusable(event); 113} 114 115#if ENABLE(SVG) 116SVGDocument* HTMLFrameOwnerElement::getSVGDocument(ExceptionCode& ec) const 117{ 118 Document* doc = contentDocument(); 119 if (doc && doc->isSVGDocument()) 120 return toSVGDocument(doc); 121 // Spec: http://www.w3.org/TR/SVG/struct.html#InterfaceGetSVGDocument 122 ec = NOT_SUPPORTED_ERR; 123 return 0; 124} 125#endif 126 127} // namespace WebCore 128