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/*
* Copyright (C) 2006, 2007, 2009 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef HTMLFrameOwnerElement_h
#define HTMLFrameOwnerElement_h
#include "core/dom/Document.h"
#include "core/frame/FrameOwner.h"
#include "core/html/HTMLElement.h"
#include "wtf/HashCountedSet.h"
namespace WebCore {
class LocalDOMWindow;
class ExceptionState;
class Frame;
class RenderPart;
class Widget;
class HTMLFrameOwnerElement : public HTMLElement, public FrameOwner {
public:
virtual ~HTMLFrameOwnerElement();
Frame* contentFrame() const { return m_contentFrame; }
LocalDOMWindow* contentWindow() const;
Document* contentDocument() const;
void setContentFrame(Frame&);
void clearContentFrame();
void disconnectContentFrame();
// Most subclasses use RenderPart (either RenderEmbeddedObject or RenderIFrame)
// except for HTMLObjectElement and HTMLEmbedElement which may return any
// RenderObject when using fallback content.
RenderPart* renderPart() const;
Document* getSVGDocument(ExceptionState&) const;
virtual ScrollbarMode scrollingMode() const { return ScrollbarAuto; }
virtual bool loadedNonEmptyDocument() const { return false; }
virtual void didLoadNonEmptyDocument() { }
virtual void renderFallbackContent() { }
virtual bool isObjectElement() const { return false; }
void setWidget(PassRefPtr<Widget>);
Widget* ownedWidget() const;
class UpdateSuspendScope {
public:
UpdateSuspendScope();
~UpdateSuspendScope();
private:
void performDeferredWidgetTreeOperations();
};
protected:
HTMLFrameOwnerElement(const QualifiedName& tagName, Document&);
void setSandboxFlags(SandboxFlags);
bool loadOrRedirectSubframe(const KURL&, const AtomicString& frameName, bool lockBackForwardList);
private:
virtual bool isKeyboardFocusable() const OVERRIDE;
virtual bool isFrameOwnerElement() const OVERRIDE FINAL { return true; }
// FrameOwner overrides:
virtual bool isLocal() const { return true; }
virtual SandboxFlags sandboxFlags() const OVERRIDE { return m_sandboxFlags; }
virtual void dispatchLoad() OVERRIDE;
Frame* m_contentFrame;
RefPtr<Widget> m_widget;
SandboxFlags m_sandboxFlags;
};
DEFINE_ELEMENT_TYPE_CASTS(HTMLFrameOwnerElement, isFrameOwnerElement());
class SubframeLoadingDisabler {
public:
explicit SubframeLoadingDisabler(Node& root)
: m_root(root)
{
disabledSubtreeRoots().add(&m_root);
}
~SubframeLoadingDisabler()
{
disabledSubtreeRoots().remove(&m_root);
}
static bool canLoadFrame(HTMLFrameOwnerElement& owner)
{
if (owner.document().unloadStarted())
return false;
for (Node* node = &owner; node; node = node->parentOrShadowHostNode()) {
if (disabledSubtreeRoots().contains(node))
return false;
}
return true;
}
private:
static HashCountedSet<Node*>& disabledSubtreeRoots()
{
DEFINE_STATIC_LOCAL(HashCountedSet<Node*>, nodes, ());
return nodes;
}
Node& m_root;
};
DEFINE_TYPE_CASTS(HTMLFrameOwnerElement, FrameOwner, owner, owner->isLocal(), owner.isLocal());
} // namespace WebCore
#endif // HTMLFrameOwnerElement_h
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