1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
3 /* This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6
7 #include "SVGElementFactory.h"
8 #include "nsGkAtoms.h"
9 #include "nsIContent.h"
10 #include "mozilla/dom/NodeInfo.h"
11 #include "mozilla/dom/Element.h"
12 #include "mozilla/dom/FromParser.h"
13 #include "mozilla/StaticPtr.h"
14 #include "nsDataHashtable.h"
15 #include "nsHashKeys.h"
16
17 using namespace mozilla;
18 using namespace mozilla::dom;
19
20 // Hash table that maps nsAtom* SVG tags to a SVGContentCreatorFunction.
21 using TagAtomTable =
22 nsDataHashtable<nsPtrHashKey<nsAtom>, SVGContentCreatorFunction>;
23 StaticAutoPtr<TagAtomTable> sTagAtomTable;
24
25 #define SVG_TAG(_tag, _classname) \
26 nsresult NS_NewSVG##_classname##Element( \
27 nsIContent** aResult, \
28 already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo); \
29 \
30 nsresult NS_NewSVG##_classname##Element( \
31 nsIContent** aResult, \
32 already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo, \
33 FromParser aFromParser) { \
34 return NS_NewSVG##_classname##Element(aResult, std::move(aNodeInfo)); \
35 }
36
37 #define SVG_FROM_PARSER_TAG(_tag, _classname)
38
39 #include "SVGTagList.h"
40 #undef SVG_TAG
41 #undef SVG_FROM_PARSER_TAG
42
43 nsresult NS_NewSVGElement(Element** aResult,
44 already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
45
46 enum SVGTag {
47 #define SVG_TAG(_tag, _classname) eSVGTag_##_tag,
48 #define SVG_FROM_PARSER_TAG(_tag, _classname) eSVGTag_##_tag,
49 #include "SVGTagList.h"
50 #undef SVG_TAG
51 #undef SVG_FROM_PARSER_TAG
52 eSVGTag_Count
53 };
54
Init()55 void SVGElementFactory::Init() {
56 sTagAtomTable = new TagAtomTable(64);
57
58 #define SVG_TAG(_tag, _classname) \
59 sTagAtomTable->Put(nsGkAtoms::_tag, NS_NewSVG##_classname##Element);
60 #define SVG_FROM_PARSER_TAG(_tag, _classname) \
61 sTagAtomTable->Put(nsGkAtoms::_tag, NS_NewSVG##_classname##Element);
62 #include "SVGTagList.h"
63 #undef SVG_TAG
64 #undef SVG_FROM_PARSER_TAG
65 }
66
Shutdown()67 void SVGElementFactory::Shutdown() { sTagAtomTable = nullptr; }
68
NS_NewSVGElement(Element ** aResult,already_AddRefed<mozilla::dom::NodeInfo> && aNodeInfo,FromParser aFromParser)69 nsresult NS_NewSVGElement(Element** aResult,
70 already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
71 FromParser aFromParser) {
72 NS_ASSERTION(sTagAtomTable, "no lookup table, needs SVGElementFactory::Init");
73
74 RefPtr<mozilla::dom::NodeInfo> ni = aNodeInfo;
75 nsAtom* name = ni->NameAtom();
76
77 NS_ASSERTION(
78 ni->NamespaceEquals(kNameSpaceID_SVG),
79 "Trying to create SVG elements that aren't in the SVG namespace");
80
81 SVGContentCreatorFunction cb = sTagAtomTable->Get(name);
82 if (cb) {
83 nsCOMPtr<nsIContent> content;
84 nsresult rv = cb(getter_AddRefs(content), ni.forget(), aFromParser);
85 *aResult = content.forget().take()->AsElement();
86 return rv;
87 }
88
89 // if we don't know what to create, just create a standard svg element:
90 return NS_NewSVGElement(aResult, ni.forget());
91 }
92
NS_NewSVGUnknownElement(nsIContent ** aResult,already_AddRefed<mozilla::dom::NodeInfo> && aNodeInfo,FromParser aFromParser)93 nsresult NS_NewSVGUnknownElement(
94 nsIContent** aResult, already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
95 FromParser aFromParser) {
96 RefPtr<mozilla::dom::NodeInfo> ni = aNodeInfo;
97 nsCOMPtr<Element> element;
98 nsresult rv = NS_NewSVGElement(getter_AddRefs(element), ni.forget());
99 element.forget(aResult);
100 return rv;
101 }
102