diff options
Diffstat (limited to 'dom/svg/SVGAElement.cpp')
| -rw-r--r-- | dom/svg/SVGAElement.cpp | 349 |
1 files changed, 349 insertions, 0 deletions
diff --git a/dom/svg/SVGAElement.cpp b/dom/svg/SVGAElement.cpp new file mode 100644 index 000000000..a69c60ee4 --- /dev/null +++ b/dom/svg/SVGAElement.cpp @@ -0,0 +1,349 @@ +/* -*- 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/dom/SVGAElement.h" + +#include "mozilla/Attributes.h" +#include "mozilla/EventDispatcher.h" +#include "mozilla/EventStates.h" +#include "mozilla/dom/SVGAElementBinding.h" +#include "nsCOMPtr.h" +#include "nsContentUtils.h" +#include "nsGkAtoms.h" +#include "nsSVGString.h" +#include "nsIURI.h" + +NS_IMPL_NS_NEW_NAMESPACED_SVG_ELEMENT(A) + +namespace mozilla { +namespace dom { + +JSObject* +SVGAElement::WrapNode(JSContext *aCx, JS::Handle<JSObject*> aGivenProto) +{ + return SVGAElementBinding::Wrap(aCx, this, aGivenProto); +} + +nsSVGElement::StringInfo SVGAElement::sStringInfo[3] = +{ + { &nsGkAtoms::href, kNameSpaceID_None, true }, + { &nsGkAtoms::href, kNameSpaceID_XLink, true }, + { &nsGkAtoms::target, kNameSpaceID_None, true } +}; + + +//---------------------------------------------------------------------- +// nsISupports methods + +NS_INTERFACE_TABLE_HEAD_CYCLE_COLLECTION_INHERITED(SVGAElement) + NS_INTERFACE_TABLE_INHERITED(SVGAElement, + nsIDOMNode, + nsIDOMElement, + nsIDOMSVGElement, + Link) +NS_INTERFACE_TABLE_TAIL_INHERITING(SVGAElementBase) + +NS_IMPL_CYCLE_COLLECTION_CLASS(SVGAElement) + +NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(SVGAElement, + SVGAElementBase) +NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END + +NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(SVGAElement, + SVGAElementBase) +NS_IMPL_CYCLE_COLLECTION_UNLINK_END + +NS_IMPL_ADDREF_INHERITED(SVGAElement, SVGAElementBase) +NS_IMPL_RELEASE_INHERITED(SVGAElement, SVGAElementBase) + +//---------------------------------------------------------------------- +// Implementation + +SVGAElement::SVGAElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo) + : SVGAElementBase(aNodeInfo) + , Link(this) +{ +} + +SVGAElement::~SVGAElement() +{ +} + +already_AddRefed<SVGAnimatedString> +SVGAElement::Href() +{ + return mStringAttributes[HREF].IsExplicitlySet() + ? mStringAttributes[HREF].ToDOMAnimatedString(this) + : mStringAttributes[XLINK_HREF].ToDOMAnimatedString(this); +} + +//---------------------------------------------------------------------- +// nsINode methods + +nsresult +SVGAElement::PreHandleEvent(EventChainPreVisitor& aVisitor) +{ + nsresult rv = Element::PreHandleEvent(aVisitor); + NS_ENSURE_SUCCESS(rv, rv); + + return PreHandleEventForLinks(aVisitor); +} + +nsresult +SVGAElement::PostHandleEvent(EventChainPostVisitor& aVisitor) +{ + return PostHandleEventForLinks(aVisitor); +} + +NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGAElement) + + +//---------------------------------------------------------------------- + +already_AddRefed<SVGAnimatedString> +SVGAElement::Target() +{ + return mStringAttributes[TARGET].ToDOMAnimatedString(this); +} + +void +SVGAElement::GetDownload(nsAString & aDownload) +{ + GetAttr(kNameSpaceID_None, nsGkAtoms::download, aDownload); +} + +void +SVGAElement::SetDownload(const nsAString & aDownload, ErrorResult& rv) +{ + rv = SetAttr(kNameSpaceID_None, nsGkAtoms::download, aDownload, true); +} + +//---------------------------------------------------------------------- +// nsIContent methods + +nsresult +SVGAElement::BindToTree(nsIDocument *aDocument, nsIContent *aParent, + nsIContent *aBindingParent, + bool aCompileEventHandlers) +{ + Link::ResetLinkState(false, Link::ElementHasHref()); + + nsresult rv = SVGAElementBase::BindToTree(aDocument, aParent, + aBindingParent, + aCompileEventHandlers); + NS_ENSURE_SUCCESS(rv, rv); + + nsIDocument* doc = GetComposedDoc(); + if (doc) { + doc->RegisterPendingLinkUpdate(this); + } + + return NS_OK; +} + +void +SVGAElement::UnbindFromTree(bool aDeep, bool aNullParent) +{ + // If this link is ever reinserted into a document, it might + // be under a different xml:base, so forget the cached state now. + Link::ResetLinkState(false, Link::ElementHasHref()); + + // Note, we need to use OwnerDoc() here since GetComposedDoc() may + // return null already at this point. + nsIDocument* doc = OwnerDoc(); + if (doc) { + doc->UnregisterPendingLinkUpdate(this); + } + + SVGAElementBase::UnbindFromTree(aDeep, aNullParent); +} + +already_AddRefed<nsIURI> +SVGAElement::GetHrefURI() const +{ + nsCOMPtr<nsIURI> hrefURI; + return IsLink(getter_AddRefs(hrefURI)) ? hrefURI.forget() : nullptr; +} + + +NS_IMETHODIMP_(bool) +SVGAElement::IsAttributeMapped(const nsIAtom* name) const +{ + static const MappedAttributeEntry* const map[] = { + sFEFloodMap, + sFiltersMap, + sFontSpecificationMap, + sGradientStopMap, + sLightingEffectsMap, + sMarkersMap, + sTextContentElementsMap, + sViewportsMap + }; + + return FindAttributeDependence(name, map) || + SVGAElementBase::IsAttributeMapped(name); +} + +bool +SVGAElement::IsFocusableInternal(int32_t *aTabIndex, bool aWithMouse) +{ + nsCOMPtr<nsIURI> uri; + if (IsLink(getter_AddRefs(uri))) { + if (aTabIndex) { + *aTabIndex = ((sTabFocusModel & eTabFocus_linksMask) == 0 ? -1 : 0); + } + return true; + } + if (nsSVGElement::IsFocusableInternal(aTabIndex, aWithMouse)) { + return true; + } + + if (aTabIndex) { + *aTabIndex = -1; + } + + return false; +} + +bool +SVGAElement::IsLink(nsIURI** aURI) const +{ + // To be a clickable XLink for styling and interaction purposes, we require: + // + // xlink:href - must be set + // xlink:type - must be unset or set to "" or set to "simple" + // xlink:show - must be unset or set to "", "new" or "replace" + // xlink:actuate - must be unset or set to "" or "onRequest" + // + // For any other values, we're either not a *clickable* XLink, or the end + // result is poorly specified. Either way, we return false. + + static nsIContent::AttrValuesArray sTypeVals[] = + { &nsGkAtoms::_empty, &nsGkAtoms::simple, nullptr }; + + static nsIContent::AttrValuesArray sShowVals[] = + { &nsGkAtoms::_empty, &nsGkAtoms::_new, &nsGkAtoms::replace, nullptr }; + + static nsIContent::AttrValuesArray sActuateVals[] = + { &nsGkAtoms::_empty, &nsGkAtoms::onRequest, nullptr }; + + // Optimization: check for href first for early return + bool useXLink = !HasAttr(kNameSpaceID_None, nsGkAtoms::href); + const nsAttrValue* href = + useXLink + ? mAttrsAndChildren.GetAttr(nsGkAtoms::href, kNameSpaceID_XLink) + : mAttrsAndChildren.GetAttr(nsGkAtoms::href, kNameSpaceID_None); + + if (href && + FindAttrValueIn(kNameSpaceID_XLink, nsGkAtoms::type, + sTypeVals, eCaseMatters) != + nsIContent::ATTR_VALUE_NO_MATCH && + FindAttrValueIn(kNameSpaceID_XLink, nsGkAtoms::show, + sShowVals, eCaseMatters) != + nsIContent::ATTR_VALUE_NO_MATCH && + FindAttrValueIn(kNameSpaceID_XLink, nsGkAtoms::actuate, + sActuateVals, eCaseMatters) != + nsIContent::ATTR_VALUE_NO_MATCH) { + nsCOMPtr<nsIURI> baseURI = GetBaseURI(); + // Get absolute URI + nsAutoString str; + const uint8_t idx = useXLink ? XLINK_HREF : HREF; + mStringAttributes[idx].GetAnimValue(str, this); + nsContentUtils::NewURIWithDocumentCharset(aURI, str, OwnerDoc(), baseURI); + // must promise out param is non-null if we return true + return !!*aURI; + } + + *aURI = nullptr; + return false; +} + +void +SVGAElement::GetLinkTarget(nsAString& aTarget) +{ + mStringAttributes[TARGET].GetAnimValue(aTarget, this); + if (aTarget.IsEmpty()) { + + static nsIContent::AttrValuesArray sShowVals[] = + { &nsGkAtoms::_new, &nsGkAtoms::replace, nullptr }; + + switch (FindAttrValueIn(kNameSpaceID_XLink, nsGkAtoms::show, + sShowVals, eCaseMatters)) { + case 0: + aTarget.AssignLiteral("_blank"); + return; + case 1: + return; + } + nsIDocument* ownerDoc = OwnerDoc(); + if (ownerDoc) { + ownerDoc->GetBaseTarget(aTarget); + } + } +} + +EventStates +SVGAElement::IntrinsicState() const +{ + return Link::LinkState() | SVGAElementBase::IntrinsicState(); +} + +nsresult +SVGAElement::SetAttr(int32_t aNameSpaceID, nsIAtom* aName, + nsIAtom* aPrefix, const nsAString& aValue, + bool aNotify) +{ + nsresult rv = SVGAElementBase::SetAttr(aNameSpaceID, aName, aPrefix, + aValue, aNotify); + + // The ordering of the parent class's SetAttr call and Link::ResetLinkState + // is important here! The attribute is not set until SetAttr returns, and + // we will need the updated attribute value because notifying the document + // that content states have changed will call IntrinsicState, which will try + // to get updated information about the visitedness from Link. + if (aName == nsGkAtoms::href && + (aNameSpaceID == kNameSpaceID_XLink || + aNameSpaceID == kNameSpaceID_None)) { + Link::ResetLinkState(!!aNotify, true); + } + + return rv; +} + +nsresult +SVGAElement::UnsetAttr(int32_t aNameSpaceID, nsIAtom* aAttr, + bool aNotify) +{ + nsresult rv = nsSVGElement::UnsetAttr(aNameSpaceID, aAttr, aNotify); + + // The ordering of the parent class's UnsetAttr call and Link::ResetLinkState + // is important here! The attribute is not unset until UnsetAttr returns, and + // we will need the updated attribute value because notifying the document + // that content states have changed will call IntrinsicState, which will try + // to get updated information about the visitedness from Link. + if (aAttr == nsGkAtoms::href && + (aNameSpaceID == kNameSpaceID_XLink || + aNameSpaceID == kNameSpaceID_None)) { + bool hasHref = HasAttr(kNameSpaceID_None, nsGkAtoms::href) || + HasAttr(kNameSpaceID_XLink, nsGkAtoms::href); + Link::ResetLinkState(!!aNotify, hasHref); + } + + return rv; +} + +//---------------------------------------------------------------------- +// nsSVGElement methods + +nsSVGElement::StringAttributesInfo +SVGAElement::GetStringInfo() +{ + return StringAttributesInfo(mStringAttributes, sStringInfo, + ArrayLength(sStringInfo)); +} + +} // namespace dom +} // namespace mozilla |