/* -*- 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/SVGSwitchElement.h" #include "nsLayoutUtils.h" #include "nsSVGUtils.h" #include "mozilla/Preferences.h" #include "mozilla/dom/SVGSwitchElementBinding.h" class nsIFrame; NS_IMPL_NS_NEW_NAMESPACED_SVG_ELEMENT(Switch) namespace mozilla { namespace dom { JSObject* SVGSwitchElement::WrapNode(JSContext *aCx, JS::Handle<JSObject*> aGivenProto) { return SVGSwitchElementBinding::Wrap(aCx, this, aGivenProto); } //---------------------------------------------------------------------- // nsISupports methods NS_IMPL_CYCLE_COLLECTION_INHERITED(SVGSwitchElement, SVGSwitchElementBase, mActiveChild) NS_IMPL_ADDREF_INHERITED(SVGSwitchElement,SVGSwitchElementBase) NS_IMPL_RELEASE_INHERITED(SVGSwitchElement,SVGSwitchElementBase) NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(SVGSwitchElement) NS_INTERFACE_MAP_END_INHERITING(SVGSwitchElementBase) //---------------------------------------------------------------------- // Implementation SVGSwitchElement::SVGSwitchElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo) : SVGSwitchElementBase(aNodeInfo) { } SVGSwitchElement::~SVGSwitchElement() { } void SVGSwitchElement::MaybeInvalidate() { // We must not change mActiveChild until after // InvalidateAndScheduleBoundsUpdate has been called, otherwise // it will not correctly invalidate the old mActiveChild area. nsIContent *newActiveChild = FindActiveChild(); if (newActiveChild == mActiveChild) { return; } nsIFrame *frame = GetPrimaryFrame(); if (frame) { nsLayoutUtils::PostRestyleEvent( this, nsRestyleHint(0), nsChangeHint_InvalidateRenderingObservers); nsSVGUtils::ScheduleReflowSVG(frame); } mActiveChild = newActiveChild; } //---------------------------------------------------------------------- // nsIDOMNode methods NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGSwitchElement) //---------------------------------------------------------------------- // nsINode methods nsresult SVGSwitchElement::InsertChildAt(nsIContent* aKid, uint32_t aIndex, bool aNotify) { nsresult rv = SVGSwitchElementBase::InsertChildAt(aKid, aIndex, aNotify); if (NS_SUCCEEDED(rv)) { MaybeInvalidate(); } return rv; } void SVGSwitchElement::RemoveChildAt(uint32_t aIndex, bool aNotify) { SVGSwitchElementBase::RemoveChildAt(aIndex, aNotify); MaybeInvalidate(); } //---------------------------------------------------------------------- // nsIContent methods NS_IMETHODIMP_(bool) SVGSwitchElement::IsAttributeMapped(const nsIAtom* name) const { static const MappedAttributeEntry* const map[] = { sFEFloodMap, sFiltersMap, sFontSpecificationMap, sGradientStopMap, sLightingEffectsMap, sMarkersMap, sTextContentElementsMap, sViewportsMap }; return FindAttributeDependence(name, map) || SVGSwitchElementBase::IsAttributeMapped(name); } //---------------------------------------------------------------------- // Implementation Helpers: nsIContent * SVGSwitchElement::FindActiveChild() const { const nsAdoptingString& acceptLangs = Preferences::GetLocalizedString("intl.accept_languages"); if (!acceptLangs.IsEmpty()) { int32_t bestLanguagePreferenceRank = -1; nsIContent *bestChild = nullptr; nsIContent *defaultChild = nullptr; for (nsIContent* child = nsINode::GetFirstChild(); child; child = child->GetNextSibling()) { if (!child->IsElement()) { continue; } nsCOMPtr<SVGTests> tests(do_QueryInterface(child)); if (tests) { if (tests->PassesConditionalProcessingTests( SVGTests::kIgnoreSystemLanguage)) { int32_t languagePreferenceRank = tests->GetBestLanguagePreferenceRank(acceptLangs); switch (languagePreferenceRank) { case 0: // best possible match return child; case -1: // no match break; case -2: // no systemLanguage attribute. If there's nothing better // we'll use the first such child. if (!defaultChild) { defaultChild = child; } break; default: if (bestLanguagePreferenceRank == -1 || languagePreferenceRank < bestLanguagePreferenceRank) { bestLanguagePreferenceRank = languagePreferenceRank; bestChild = child; } break; } } } else if (!bestChild) { bestChild = child; } } return bestChild ? bestChild : defaultChild; } for (nsIContent* child = nsINode::GetFirstChild(); child; child = child->GetNextSibling()) { if (!child->IsElement()) { continue; } nsCOMPtr<SVGTests> tests(do_QueryInterface(child)); if (!tests || tests->PassesConditionalProcessingTests(&acceptLangs)) { return child; } } return nullptr; } } // namespace dom } // namespace mozilla