154 lines
4.7 KiB
C++
154 lines
4.7 KiB
C++
/*
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* Copyright (C) 2006-2019 Apple Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#include "config.h"
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#include "HTMLFrameOwnerElement.h"
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#include "DOMWindow.h"
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#include "Frame.h"
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#include "FrameLoader.h"
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#include "RenderWidget.h"
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#include "ScriptController.h"
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#include "ShadowRoot.h"
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#include "SVGDocument.h"
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#include "StyleTreeResolver.h"
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#include <wtf/IsoMallocInlines.h>
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#include <wtf/Ref.h>
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namespace WebCore {
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WTF_MAKE_ISO_ALLOCATED_IMPL(HTMLFrameOwnerElement);
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HTMLFrameOwnerElement::HTMLFrameOwnerElement(const QualifiedName& tagName, Document& document)
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: HTMLElement(tagName, document)
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{
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}
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RenderWidget* HTMLFrameOwnerElement::renderWidget() const
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{
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// HTMLObjectElement and HTMLEmbedElement may return arbitrary renderers
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// when using fallback content.
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if (!is<RenderWidget>(renderer()))
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return nullptr;
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return downcast<RenderWidget>(renderer());
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}
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void HTMLFrameOwnerElement::setContentFrame(Frame& frame)
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{
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// Make sure we will not end up with two frames referencing the same owner element.
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ASSERT(!m_contentFrame || m_contentFrame->ownerElement() != this);
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// Disconnected frames should not be allowed to load.
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ASSERT(isConnected());
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m_contentFrame = makeWeakPtr(frame);
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for (RefPtr<ContainerNode> node = this; node; node = node->parentOrShadowHostNode())
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node->incrementConnectedSubframeCount();
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}
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void HTMLFrameOwnerElement::clearContentFrame()
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{
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if (!m_contentFrame)
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return;
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m_contentFrame = nullptr;
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for (RefPtr<ContainerNode> node = this; node; node = node->parentOrShadowHostNode())
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node->decrementConnectedSubframeCount();
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}
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void HTMLFrameOwnerElement::disconnectContentFrame()
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{
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if (RefPtr<Frame> frame = m_contentFrame.get()) {
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frame->loader().frameDetached();
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frame->disconnectOwnerElement();
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}
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}
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HTMLFrameOwnerElement::~HTMLFrameOwnerElement()
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{
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if (m_contentFrame)
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m_contentFrame->disconnectOwnerElement();
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}
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Document* HTMLFrameOwnerElement::contentDocument() const
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{
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return m_contentFrame ? m_contentFrame->document() : nullptr;
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}
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WindowProxy* HTMLFrameOwnerElement::contentWindow() const
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{
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return m_contentFrame ? &m_contentFrame->windowProxy() : nullptr;
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}
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void HTMLFrameOwnerElement::setSandboxFlags(SandboxFlags flags)
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{
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m_sandboxFlags = flags;
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}
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bool HTMLFrameOwnerElement::isKeyboardFocusable(KeyboardEvent* event) const
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{
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return m_contentFrame && HTMLElement::isKeyboardFocusable(event);
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}
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ExceptionOr<Document&> HTMLFrameOwnerElement::getSVGDocument() const
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{
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auto* document = contentDocument();
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if (is<SVGDocument>(document))
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return *document;
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// Spec: http://www.w3.org/TR/SVG/struct.html#InterfaceGetSVGDocument
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return Exception { NotSupportedError };
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}
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void HTMLFrameOwnerElement::scheduleInvalidateStyleAndLayerComposition()
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{
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if (Style::postResolutionCallbacksAreSuspended()) {
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RefPtr<HTMLFrameOwnerElement> element = this;
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Style::queuePostResolutionCallback([element] {
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element->invalidateStyleAndLayerComposition();
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});
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} else
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invalidateStyleAndLayerComposition();
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}
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bool HTMLFrameOwnerElement::isProhibitedSelfReference(const URL& completeURL) const
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{
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// We allow one level of self-reference because some websites depend on that, but we don't allow more than one.
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bool foundOneSelfReference = false;
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for (auto* frame = document().frame(); frame; frame = frame->tree().parent()) {
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if (equalIgnoringFragmentIdentifier(frame->document()->url(), completeURL)) {
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if (foundOneSelfReference)
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return true;
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foundOneSelfReference = true;
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}
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}
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return false;
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}
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bool SubframeLoadingDisabler::canLoadFrame(HTMLFrameOwnerElement& owner)
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{
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for (RefPtr<ContainerNode> node = &owner; node; node = node->parentOrShadowHostNode()) {
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if (disabledSubtreeRoots().contains(node.get()))
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return false;
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}
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return true;
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}
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} // namespace WebCore
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