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-rw-r--r--dom/svg/SVGMPathElement.cpp288
1 files changed, 288 insertions, 0 deletions
diff --git a/dom/svg/SVGMPathElement.cpp b/dom/svg/SVGMPathElement.cpp
new file mode 100644
index 000000000..4a137f8fc
--- /dev/null
+++ b/dom/svg/SVGMPathElement.cpp
@@ -0,0 +1,288 @@
+/* -*- 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/. */
+
+#include "mozilla/ArrayUtils.h"
+
+#include "mozilla/dom/SVGMPathElement.h"
+#include "nsDebug.h"
+#include "mozilla/dom/SVGAnimateMotionElement.h"
+#include "mozilla/dom/SVGPathElement.h"
+#include "nsContentUtils.h"
+#include "mozilla/dom/SVGMPathElementBinding.h"
+#include "nsIURI.h"
+
+NS_IMPL_NS_NEW_NAMESPACED_SVG_ELEMENT(MPath)
+
+namespace mozilla {
+namespace dom {
+
+JSObject*
+SVGMPathElement::WrapNode(JSContext *aCx, JS::Handle<JSObject*> aGivenProto)
+{
+ return SVGMPathElementBinding::Wrap(aCx, this, aGivenProto);
+}
+
+nsSVGElement::StringInfo SVGMPathElement::sStringInfo[2] =
+{
+ { &nsGkAtoms::href, kNameSpaceID_None, false },
+ { &nsGkAtoms::href, kNameSpaceID_XLink, false }
+};
+
+// Cycle collection magic -- based on SVGUseElement
+NS_IMPL_CYCLE_COLLECTION_CLASS(SVGMPathElement)
+
+NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(SVGMPathElement,
+ SVGMPathElementBase)
+ tmp->UnlinkHrefTarget(false);
+NS_IMPL_CYCLE_COLLECTION_UNLINK_END
+
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(SVGMPathElement,
+ SVGMPathElementBase)
+ tmp->mHrefTarget.Traverse(&cb);
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
+
+//----------------------------------------------------------------------
+// nsISupports methods
+
+NS_IMPL_ADDREF_INHERITED(SVGMPathElement,SVGMPathElementBase)
+NS_IMPL_RELEASE_INHERITED(SVGMPathElement,SVGMPathElementBase)
+
+NS_INTERFACE_TABLE_HEAD_CYCLE_COLLECTION_INHERITED(SVGMPathElement)
+ NS_INTERFACE_TABLE_INHERITED(SVGMPathElement, nsIDOMNode, nsIDOMElement,
+ nsIDOMSVGElement,
+ nsIMutationObserver)
+NS_INTERFACE_TABLE_TAIL_INHERITING(SVGMPathElementBase)
+
+// Constructor
+SVGMPathElement::SVGMPathElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
+ : SVGMPathElementBase(aNodeInfo),
+ mHrefTarget(this)
+{
+}
+
+SVGMPathElement::~SVGMPathElement()
+{
+ UnlinkHrefTarget(false);
+}
+
+//----------------------------------------------------------------------
+// nsIDOMNode methods
+
+NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGMPathElement)
+
+already_AddRefed<SVGAnimatedString>
+SVGMPathElement::Href()
+{
+ return mStringAttributes[HREF].IsExplicitlySet()
+ ? mStringAttributes[HREF].ToDOMAnimatedString(this)
+ : mStringAttributes[XLINK_HREF].ToDOMAnimatedString(this);
+}
+
+//----------------------------------------------------------------------
+// nsIContent methods
+
+nsresult
+SVGMPathElement::BindToTree(nsIDocument* aDocument,
+ nsIContent* aParent,
+ nsIContent* aBindingParent,
+ bool aCompileEventHandlers)
+{
+ MOZ_ASSERT(!mHrefTarget.get(),
+ "Shouldn't have href-target yet (or it should've been cleared)");
+ nsresult rv = SVGMPathElementBase::BindToTree(aDocument, aParent,
+ aBindingParent,
+ aCompileEventHandlers);
+ NS_ENSURE_SUCCESS(rv,rv);
+
+ if (aDocument) {
+ const nsAttrValue* hrefAttrValue =
+ HasAttr(kNameSpaceID_None, nsGkAtoms::href)
+ ? mAttrsAndChildren.GetAttr(nsGkAtoms::href, kNameSpaceID_None)
+ : mAttrsAndChildren.GetAttr(nsGkAtoms::href, kNameSpaceID_XLink);
+ if (hrefAttrValue) {
+ UpdateHrefTarget(aParent, hrefAttrValue->GetStringValue());
+ }
+ }
+
+ return NS_OK;
+}
+
+void
+SVGMPathElement::UnbindFromTree(bool aDeep, bool aNullParent)
+{
+ UnlinkHrefTarget(true);
+ SVGMPathElementBase::UnbindFromTree(aDeep, aNullParent);
+}
+
+bool
+SVGMPathElement::ParseAttribute(int32_t aNamespaceID,
+ nsIAtom* aAttribute,
+ const nsAString& aValue,
+ nsAttrValue& aResult)
+{
+ bool returnVal =
+ SVGMPathElementBase::ParseAttribute(aNamespaceID, aAttribute,
+ aValue, aResult);
+ if ((aNamespaceID == kNameSpaceID_XLink ||
+ aNamespaceID == kNameSpaceID_None ) &&
+ aAttribute == nsGkAtoms::href &&
+ IsInUncomposedDoc()) {
+ // Note: If we fail the IsInDoc call, it's ok -- we'll update the target
+ // on next BindToTree call.
+
+ // Note: "href" takes priority over xlink:href. So if "xlink:href" is being
+ // set here, we only let that update our target if "href" is *unset*.
+ if (aNamespaceID != kNameSpaceID_XLink ||
+ !mStringAttributes[HREF].IsExplicitlySet()) {
+ UpdateHrefTarget(GetParent(), aValue);
+ }
+ }
+ return returnVal;
+}
+
+nsresult
+SVGMPathElement::UnsetAttr(int32_t aNamespaceID,
+ nsIAtom* aAttribute, bool aNotify)
+{
+ nsresult rv = SVGMPathElementBase::UnsetAttr(aNamespaceID, aAttribute,
+ aNotify);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ if (aAttribute == nsGkAtoms::href) {
+ if (aNamespaceID == kNameSpaceID_None) {
+ UnlinkHrefTarget(true);
+
+ // After unsetting href, we may still have xlink:href, so we should
+ // try to add it back.
+ const nsAttrValue* xlinkHref =
+ mAttrsAndChildren.GetAttr(nsGkAtoms::href, kNameSpaceID_XLink);
+ if (xlinkHref) {
+ UpdateHrefTarget(GetParent(), xlinkHref->GetStringValue());
+ }
+ } else if (!HasAttr(kNameSpaceID_None, nsGkAtoms::href)) {
+ UnlinkHrefTarget(true);
+ } // else: we unset xlink:href, but we still have href attribute, so keep
+ // the target linking to href.
+ }
+
+ return NS_OK;
+}
+
+//----------------------------------------------------------------------
+// nsSVGElement methods
+
+nsSVGElement::StringAttributesInfo
+SVGMPathElement::GetStringInfo()
+{
+ return StringAttributesInfo(mStringAttributes, sStringInfo,
+ ArrayLength(sStringInfo));
+}
+
+//----------------------------------------------------------------------
+// nsIMutationObserver methods
+
+void
+SVGMPathElement::AttributeChanged(nsIDocument* aDocument,
+ Element* aElement,
+ int32_t aNameSpaceID,
+ nsIAtom* aAttribute,
+ int32_t aModType,
+ const nsAttrValue* aOldValue)
+{
+ if (aNameSpaceID == kNameSpaceID_None) {
+ if (aAttribute == nsGkAtoms::d) {
+ NotifyParentOfMpathChange(GetParent());
+ }
+ }
+}
+
+//----------------------------------------------------------------------
+// Public helper methods
+
+SVGPathElement*
+SVGMPathElement::GetReferencedPath()
+{
+ if (!HasAttr(kNameSpaceID_XLink, nsGkAtoms::href) &&
+ !HasAttr(kNameSpaceID_None, nsGkAtoms::href)) {
+ MOZ_ASSERT(!mHrefTarget.get(),
+ "We shouldn't have a href target "
+ "if we don't have an xlink:href or href attribute");
+ return nullptr;
+ }
+
+ nsIContent* genericTarget = mHrefTarget.get();
+ if (genericTarget && genericTarget->IsSVGElement(nsGkAtoms::path)) {
+ return static_cast<SVGPathElement*>(genericTarget);
+ }
+ return nullptr;
+}
+
+//----------------------------------------------------------------------
+// Protected helper methods
+
+void
+SVGMPathElement::UpdateHrefTarget(nsIContent* aParent,
+ const nsAString& aHrefStr)
+{
+ nsCOMPtr<nsIURI> targetURI;
+ nsCOMPtr<nsIURI> baseURI = GetBaseURI();
+ nsContentUtils::NewURIWithDocumentCharset(getter_AddRefs(targetURI),
+ aHrefStr, OwnerDoc(), baseURI);
+
+ // Stop observing old target (if any)
+ if (mHrefTarget.get()) {
+ mHrefTarget.get()->RemoveMutationObserver(this);
+ }
+
+ if (aParent) {
+ // Pass in |aParent| instead of |this| -- first argument is only used
+ // for a call to GetComposedDoc(), and |this| might not have a current
+ // document yet (if our caller is BindToTree).
+ mHrefTarget.Reset(aParent, targetURI);
+ } else {
+ // if we don't have a parent, then there's no animateMotion element
+ // depending on our target, so there's no point tracking it right now.
+ mHrefTarget.Unlink();
+ }
+
+ // Start observing new target (if any)
+ if (mHrefTarget.get()) {
+ mHrefTarget.get()->AddMutationObserver(this);
+ }
+
+ NotifyParentOfMpathChange(aParent);
+}
+
+void
+SVGMPathElement::UnlinkHrefTarget(bool aNotifyParent)
+{
+ // Stop observing old target (if any)
+ if (mHrefTarget.get()) {
+ mHrefTarget.get()->RemoveMutationObserver(this);
+ }
+ mHrefTarget.Unlink();
+
+ if (aNotifyParent) {
+ NotifyParentOfMpathChange(GetParent());
+ }
+}
+
+void
+SVGMPathElement::NotifyParentOfMpathChange(nsIContent* aParent)
+{
+ if (aParent && aParent->IsSVGElement(nsGkAtoms::animateMotion)) {
+
+ SVGAnimateMotionElement* animateMotionParent =
+ static_cast<SVGAnimateMotionElement*>(aParent);
+
+ animateMotionParent->MpathChanged();
+ AnimationNeedsResample();
+ }
+}
+
+} // namespace dom
+} // namespace mozilla
+