summaryrefslogtreecommitdiffstats
path: root/dom/svg/SVGUseElement.h
diff options
context:
space:
mode:
Diffstat (limited to 'dom/svg/SVGUseElement.h')
-rw-r--r--dom/svg/SVGUseElement.h127
1 files changed, 127 insertions, 0 deletions
diff --git a/dom/svg/SVGUseElement.h b/dom/svg/SVGUseElement.h
new file mode 100644
index 000000000..7630e9af6
--- /dev/null
+++ b/dom/svg/SVGUseElement.h
@@ -0,0 +1,127 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_dom_SVGUseElement_h
+#define mozilla_dom_SVGUseElement_h
+
+#include "mozilla/dom/FromParser.h"
+#include "nsReferencedElement.h"
+#include "nsStubMutationObserver.h"
+#include "mozilla/dom/SVGGraphicsElement.h"
+#include "nsSVGLength2.h"
+#include "nsSVGString.h"
+#include "nsTArray.h"
+
+class nsIContent;
+class nsSVGUseFrame;
+
+nsresult
+NS_NewSVGSVGElement(nsIContent **aResult,
+ already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
+ mozilla::dom::FromParser aFromParser);
+nsresult NS_NewSVGUseElement(nsIContent **aResult,
+ already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
+
+namespace mozilla {
+namespace dom {
+
+typedef SVGGraphicsElement SVGUseElementBase;
+
+class SVGUseElement final : public SVGUseElementBase,
+ public nsStubMutationObserver
+{
+ friend class ::nsSVGUseFrame;
+protected:
+ friend nsresult (::NS_NewSVGUseElement(nsIContent **aResult,
+ already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo));
+ explicit SVGUseElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo);
+ virtual ~SVGUseElement();
+ virtual JSObject* WrapNode(JSContext *cx, JS::Handle<JSObject*> aGivenProto) override;
+
+public:
+ // interfaces:
+
+ NS_DECL_ISUPPORTS_INHERITED
+ NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(SVGUseElement, SVGUseElementBase)
+
+ NS_DECL_NSIMUTATIONOBSERVER_CHARACTERDATACHANGED
+ NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTECHANGED
+ NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED
+ NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
+ NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED
+ NS_DECL_NSIMUTATIONOBSERVER_NODEWILLBEDESTROYED
+
+ // for nsSVGUseFrame's nsIAnonymousContentCreator implementation.
+ nsIContent* CreateAnonymousContent();
+ nsIContent* GetAnonymousContent() const { return mClone; }
+ void DestroyAnonymousContent();
+
+ // nsSVGElement specializations:
+ virtual gfxMatrix PrependLocalTransformsTo(
+ const gfxMatrix &aMatrix,
+ SVGTransformTypes aWhich = eAllTransforms) const override;
+ virtual bool HasValidDimensions() const override;
+
+ // nsIContent interface
+ virtual nsresult Clone(mozilla::dom::NodeInfo *aNodeInfo, nsINode **aResult) const override;
+ NS_IMETHOD_(bool) IsAttributeMapped(const nsIAtom* aAttribute) const override;
+
+ // WebIDL
+ already_AddRefed<SVGAnimatedString> Href();
+ already_AddRefed<SVGAnimatedLength> X();
+ already_AddRefed<SVGAnimatedLength> Y();
+ already_AddRefed<SVGAnimatedLength> Width();
+ already_AddRefed<SVGAnimatedLength> Height();
+
+ nsIURI* GetSourceDocURI();
+
+protected:
+ class SourceReference : public nsReferencedElement {
+ public:
+ explicit SourceReference(SVGUseElement* aContainer) : mContainer(aContainer) {}
+ protected:
+ virtual void ElementChanged(Element* aFrom, Element* aTo) override {
+ nsReferencedElement::ElementChanged(aFrom, aTo);
+ if (aFrom) {
+ aFrom->RemoveMutationObserver(mContainer);
+ }
+ mContainer->TriggerReclone();
+ }
+ private:
+ SVGUseElement* mContainer;
+ };
+
+ virtual LengthAttributesInfo GetLengthInfo() override;
+ virtual StringAttributesInfo GetStringInfo() override;
+
+ /**
+ * Returns true if our width and height should be used, or false if they
+ * should be ignored. As per the spec, this depends on the type of the
+ * element that we're referencing.
+ */
+ bool OurWidthAndHeightAreUsed() const;
+ void SyncWidthOrHeight(nsIAtom *aName);
+ void LookupHref();
+ void TriggerReclone();
+ void UnlinkSource();
+
+ enum { ATTR_X, ATTR_Y, ATTR_WIDTH, ATTR_HEIGHT };
+ nsSVGLength2 mLengthAttributes[4];
+ static LengthInfo sLengthInfo[4];
+
+ enum { HREF, XLINK_HREF };
+ nsSVGString mStringAttributes[2];
+ static StringInfo sStringInfo[2];
+
+ nsCOMPtr<nsIContent> mOriginal; // if we've been cloned, our "real" copy
+ nsCOMPtr<nsIContent> mClone; // cloned tree
+ SourceReference mSource; // observed element
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_SVGUseElement_h