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      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 
     34 namespace WebCore {
     35 
     36 HTMLFrameOwnerElement::HTMLFrameOwnerElement(const QualifiedName& tagName, Document* document)
     37     : HTMLElement(tagName, document)
     38     , m_contentFrame(0)
     39     , m_sandboxFlags(SandboxNone)
     40 {
     41 }
     42 
     43 RenderPart* 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 
     52 void HTMLFrameOwnerElement::willRemove()
     53 {
     54     // FIXME: It is unclear why this can't be moved to removedFromDocument()
     55     // this is the only implementation of willRemove in WebCore!
     56     if (Frame* frame = contentFrame()) {
     57         RefPtr<Frame> protect(frame);
     58         frame->loader()->frameDetached();
     59         frame->disconnectOwnerElement();
     60     }
     61 
     62     HTMLElement::willRemove();
     63 }
     64 
     65 HTMLFrameOwnerElement::~HTMLFrameOwnerElement()
     66 {
     67     if (m_contentFrame)
     68         m_contentFrame->disconnectOwnerElement();
     69 }
     70 
     71 Document* HTMLFrameOwnerElement::contentDocument() const
     72 {
     73     return m_contentFrame ? m_contentFrame->document() : 0;
     74 }
     75 
     76 DOMWindow* HTMLFrameOwnerElement::contentWindow() const
     77 {
     78     return m_contentFrame ? m_contentFrame->domWindow() : 0;
     79 }
     80 
     81 void HTMLFrameOwnerElement::setSandboxFlags(SandboxFlags flags)
     82 {
     83     if (m_sandboxFlags == flags)
     84         return;
     85 
     86     m_sandboxFlags = flags;
     87 
     88     if (Frame* frame = contentFrame())
     89         frame->loader()->ownerElementSandboxFlagsChanged();
     90 }
     91 
     92 bool HTMLFrameOwnerElement::isKeyboardFocusable(KeyboardEvent* event) const
     93 {
     94     return m_contentFrame && HTMLElement::isKeyboardFocusable(event);
     95 }
     96 
     97 #if ENABLE(SVG)
     98 SVGDocument* HTMLFrameOwnerElement::getSVGDocument(ExceptionCode& ec) const
     99 {
    100     Document* doc = contentDocument();
    101     if (doc && doc->isSVGDocument())
    102         return static_cast<SVGDocument*>(doc);
    103     // Spec: http://www.w3.org/TR/SVG/struct.html#InterfaceGetSVGDocument
    104     ec = NOT_SUPPORTED_ERR;
    105     return 0;
    106 }
    107 #endif
    108 
    109 } // namespace WebCore
    110