зеркало из https://github.com/mozilla/gecko-dev.git
111 строки
3.7 KiB
C++
111 строки
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "SVGElementFactory.h"
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#include "nsGkAtoms.h"
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#include "nsIContent.h"
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#include "mozilla/dom/NodeInfo.h"
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#include "mozilla/dom/Element.h"
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#include "mozilla/dom/FromParser.h"
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#include "mozilla/StaticPtr.h"
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#include "nsDataHashtable.h"
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#include "nsHashKeys.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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// Hash table that maps nsAtom* SVG tags to a SVGContentCreatorFunction.
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using TagAtomTable = nsDataHashtable<nsPtrHashKey<nsAtom>, SVGContentCreatorFunction>;
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StaticAutoPtr<TagAtomTable> sTagAtomTable;
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#define SVG_TAG(_tag, _classname) \
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nsresult NS_NewSVG##_classname##Element( \
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nsIContent** aResult, \
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already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo); \
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\
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nsresult NS_NewSVG##_classname##Element( \
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nsIContent** aResult, \
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already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo, \
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FromParser aFromParser) \
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{ \
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return NS_NewSVG##_classname##Element(aResult, std::move(aNodeInfo)); \
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}
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#define SVG_FROM_PARSER_TAG(_tag, _classname)
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#include "SVGTagList.h"
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#undef SVG_TAG
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#undef SVG_FROM_PARSER_TAG
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nsresult
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NS_NewSVGElement(Element** aResult,
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already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
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enum SVGTag {
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#define SVG_TAG(_tag, _classname) eSVGTag_##_tag,
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#define SVG_FROM_PARSER_TAG(_tag, _classname) eSVGTag_##_tag,
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#include "SVGTagList.h"
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#undef SVG_TAG
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#undef SVG_FROM_PARSER_TAG
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eSVGTag_Count
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};
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void
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SVGElementFactory::Init()
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{
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sTagAtomTable = new TagAtomTable(64);
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#define SVG_TAG(_tag, _classname) \
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sTagAtomTable->Put(nsGkAtoms::_tag, NS_NewSVG##_classname##Element);
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#define SVG_FROM_PARSER_TAG(_tag, _classname) \
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sTagAtomTable->Put(nsGkAtoms::_tag, NS_NewSVG##_classname##Element);
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#include "SVGTagList.h"
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#undef SVG_TAG
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#undef SVG_FROM_PARSER_TAG
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}
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void
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SVGElementFactory::Shutdown()
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{
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sTagAtomTable = nullptr;
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}
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nsresult
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NS_NewSVGElement(Element** aResult, already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
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FromParser aFromParser)
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{
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NS_ASSERTION(sTagAtomTable, "no lookup table, needs SVGElementFactory::Init");
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RefPtr<mozilla::dom::NodeInfo> ni = aNodeInfo;
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nsAtom* name = ni->NameAtom();
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NS_ASSERTION(ni->NamespaceEquals(kNameSpaceID_SVG),
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"Trying to create SVG elements that aren't in the SVG namespace");
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SVGContentCreatorFunction cb = sTagAtomTable->Get(name);
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if (cb) {
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nsCOMPtr<nsIContent> content;
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nsresult rv = cb(getter_AddRefs(content), ni.forget(), aFromParser);
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*aResult = content.forget().take()->AsElement();
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return rv;
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}
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// if we don't know what to create, just create a standard svg element:
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return NS_NewSVGElement(aResult, ni.forget());
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}
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nsresult
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NS_NewSVGUnknownElement(nsIContent** aResult,
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already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
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FromParser aFromParser)
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{
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RefPtr<mozilla::dom::NodeInfo> ni = aNodeInfo;
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nsCOMPtr<Element> element;
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nsresult rv = NS_NewSVGElement(getter_AddRefs(element), ni.forget());
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element.forget(aResult);
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return rv;
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}
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