From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001 From: "Matt A. Tobin" Date: Fri, 2 Feb 2018 04:16:08 -0500 Subject: Add m-esr52 at 52.6.0 --- dom/svg/SVGSwitchElement.cpp | 196 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 196 insertions(+) create mode 100644 dom/svg/SVGSwitchElement.cpp (limited to 'dom/svg/SVGSwitchElement.cpp') diff --git a/dom/svg/SVGSwitchElement.cpp b/dom/svg/SVGSwitchElement.cpp new file mode 100644 index 000000000..a0358dc15 --- /dev/null +++ b/dom/svg/SVGSwitchElement.cpp @@ -0,0 +1,196 @@ +/* -*- 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 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& 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 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 tests(do_QueryInterface(child)); + if (!tests || tests->PassesConditionalProcessingTests(&acceptLangs)) { + return child; + } + } + return nullptr; +} + +} // namespace dom +} // namespace mozilla + -- cgit v1.2.3