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/*
* Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann
* <zimmermann@kde.org>
* Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
*
* 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 THIRD_PARTY_BLINK_RENDERER_CORE_SVG_SVG_USE_ELEMENT_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_SVG_SVG_USE_ELEMENT_H_
#include "base/gtest_prod_util.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/svg/svg_animated_length.h"
#include "third_party/blink/renderer/core/svg/svg_external_document_cache.h"
#include "third_party/blink/renderer/core/svg/svg_geometry_element.h"
#include "third_party/blink/renderer/core/svg/svg_graphics_element.h"
#include "third_party/blink/renderer/core/svg/svg_uri_reference.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
namespace blink {
class SVGUseElement final : public SVGGraphicsElement,
public SVGURIReference,
public SVGExternalDocumentCache::Client {
DEFINE_WRAPPERTYPEINFO();
USING_GARBAGE_COLLECTED_MIXIN(SVGUseElement);
public:
explicit SVGUseElement(Document&);
~SVGUseElement() override;
void InvalidateShadowTree();
void InvalidateTargetReference();
// Return the element that should be used for clipping,
// or null if a valid clip element is not directly referenced.
SVGGraphicsElement* VisibleTargetGraphicsElementForClipping() const;
SVGAnimatedLength* x() const { return x_.Get(); }
SVGAnimatedLength* y() const { return y_.Get(); }
SVGAnimatedLength* width() const { return width_.Get(); }
SVGAnimatedLength* height() const { return height_.Get(); }
void BuildPendingResource() override;
String title() const override;
void DispatchPendingEvent();
Path ToClipPath() const;
void Trace(Visitor*) override;
private:
FloatRect GetBBox() override;
void CollectStyleForPresentationAttribute(
const QualifiedName&,
const AtomicString&,
MutableCSSPropertyValueSet*) override;
bool IsStructurallyExternal() const override;
InsertionNotificationRequest InsertedInto(ContainerNode&) override;
void RemovedFrom(ContainerNode&) override;
void DidMoveToNewDocument(Document&) override;
void SvgAttributeChanged(const QualifiedName&) override;
LayoutObject* CreateLayoutObject(const ComputedStyle&, LegacyLayout) override;
void ScheduleShadowTreeRecreation();
void CancelShadowTreeRecreation();
bool HaveLoadedRequiredResources() override {
return !IsStructurallyExternal() || have_fired_load_event_;
}
bool ShadowTreeRebuildPending() const;
bool SelfHasRelativeLengths() const override;
ShadowRoot& UseShadowRoot() const {
CHECK(ClosedShadowRoot());
return *ClosedShadowRoot();
}
Element* ResolveTargetElement();
void AttachShadowTree(SVGElement& target);
void DetachShadowTree();
CORE_EXPORT SVGElement* InstanceRoot() const;
SVGElement* CreateInstanceTree(SVGElement& target_root) const;
void ClearResourceReference();
bool HasCycleUseReferencing(const ContainerNode& target_instance,
const SVGElement& new_target) const;
void NotifyFinished(Document*) override;
void UpdateTargetReference();
Member<SVGExternalDocumentCache::Entry> cache_entry_;
Member<SVGAnimatedLength> x_;
Member<SVGAnimatedLength> y_;
Member<SVGAnimatedLength> width_;
Member<SVGAnimatedLength> height_;
KURL element_url_;
bool element_url_is_local_;
bool have_fired_load_event_;
bool needs_shadow_tree_recreation_;
Member<IdTargetObserver> target_id_observer_;
FRIEND_TEST_ALL_PREFIXES(SVGUseElementTest,
NullInstanceRootWhenNotConnectedToDocument);
FRIEND_TEST_ALL_PREFIXES(SVGUseElementTest,
NullInstanceRootWhenConnectedToInactiveDocument);
FRIEND_TEST_ALL_PREFIXES(SVGUseElementTest,
NullInstanceRootWhenShadowTreePendingRebuild);
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_SVG_SVG_USE_ELEMENT_H_
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