1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
|
/* -*- 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/. */
#ifndef mozilla_dom_HTMLLinkElement_h
#define mozilla_dom_HTMLLinkElement_h
#include "mozilla/Attributes.h"
#include "mozilla/dom/HTMLDNSPrefetch.h"
#include "mozilla/dom/LinkStyle.h"
#include "mozilla/dom/Link.h"
#include "mozilla/WeakPtr.h"
#include "nsDOMTokenList.h"
#include "nsGenericHTMLElement.h"
namespace mozilla {
class EventChainPostVisitor;
class EventChainPreVisitor;
class PreloaderBase;
namespace dom {
class HTMLLinkElement final : public nsGenericHTMLElement,
public LinkStyle,
public SupportsDNSPrefetch {
public:
explicit HTMLLinkElement(
already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
// nsISupports
NS_DECL_ISUPPORTS_INHERITED
// CC
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(HTMLLinkElement,
nsGenericHTMLElement)
NS_IMPL_FROMNODE_HTML_WITH_TAG(HTMLLinkElement, link);
NS_DECL_ADDSIZEOFEXCLUDINGTHIS
void LinkAdded();
// nsINode
nsresult Clone(dom::NodeInfo*, nsINode** aResult) const override;
JSObject* WrapNode(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) override;
// nsIContent
nsresult BindToTree(BindContext&, nsINode& aParent) override;
void UnbindFromTree(UnbindContext&) override;
void BeforeSetAttr(int32_t aNameSpaceID, nsAtom* aName,
const nsAttrValue* aValue, bool aNotify) override;
void AfterSetAttr(int32_t aNameSpaceID, nsAtom* aName,
const nsAttrValue* aValue, const nsAttrValue* aOldValue,
nsIPrincipal* aSubjectPrincipal, bool aNotify) override;
// Element
bool ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
const nsAString& aValue,
nsIPrincipal* aMaybeScriptedPrincipal,
nsAttrValue& aResult) override;
void CreateAndDispatchEvent(const nsAString& aEventName);
// WebIDL
bool Disabled() const;
void SetDisabled(bool aDisabled, ErrorResult& aRv);
nsIURI* GetURI() {
if (!mCachedURI) {
GetURIAttr(nsGkAtoms::href, nullptr, getter_AddRefs(mCachedURI));
}
return mCachedURI.get();
}
void GetHref(nsAString& aValue) {
GetURIAttr(nsGkAtoms::href, nullptr, aValue);
}
void SetHref(const nsAString& aHref, nsIPrincipal* aTriggeringPrincipal,
ErrorResult& aRv) {
SetHTMLAttr(nsGkAtoms::href, aHref, aTriggeringPrincipal, aRv);
}
void SetHref(const nsAString& aHref, ErrorResult& aRv) {
SetHTMLAttr(nsGkAtoms::href, aHref, aRv);
}
void GetCrossOrigin(nsAString& aResult) {
// Null for both missing and invalid defaults is ok, since we
// always parse to an enum value, so we don't need an invalid
// default, and we _want_ the missing default to be null.
GetEnumAttr(nsGkAtoms::crossorigin, nullptr, aResult);
}
void SetCrossOrigin(const nsAString& aCrossOrigin, ErrorResult& aError) {
SetOrRemoveNullableStringAttr(nsGkAtoms::crossorigin, aCrossOrigin, aError);
}
// nsAString for WebBrowserPersistLocalDocument
void GetRel(nsAString& aValue) { GetHTMLAttr(nsGkAtoms::rel, aValue); }
void SetRel(const nsAString& aRel, ErrorResult& aRv) {
SetHTMLAttr(nsGkAtoms::rel, aRel, aRv);
}
nsDOMTokenList* RelList();
void GetMedia(DOMString& aValue) { GetHTMLAttr(nsGkAtoms::media, aValue); }
void SetMedia(const nsAString& aMedia, ErrorResult& aRv) {
SetHTMLAttr(nsGkAtoms::media, aMedia, aRv);
}
void GetHreflang(DOMString& aValue) {
GetHTMLAttr(nsGkAtoms::hreflang, aValue);
}
void SetHreflang(const nsAString& aHreflang, ErrorResult& aRv) {
SetHTMLAttr(nsGkAtoms::hreflang, aHreflang, aRv);
}
void GetAs(nsAString& aResult);
void SetAs(const nsAString& aAs, ErrorResult& aRv) {
SetAttr(nsGkAtoms::as, aAs, aRv);
}
nsDOMTokenList* Sizes() {
if (!mSizes) {
mSizes = new nsDOMTokenList(this, nsGkAtoms::sizes);
}
return mSizes;
}
void GetType(nsAString& aValue) { GetHTMLAttr(nsGkAtoms::type, aValue); }
void SetType(const nsAString& aType, ErrorResult& aRv) {
SetHTMLAttr(nsGkAtoms::type, aType, aRv);
}
void GetCharset(nsAString& aValue) override {
GetHTMLAttr(nsGkAtoms::charset, aValue);
}
void SetCharset(const nsAString& aCharset, ErrorResult& aRv) {
SetHTMLAttr(nsGkAtoms::charset, aCharset, aRv);
}
void GetRev(DOMString& aValue) { GetHTMLAttr(nsGkAtoms::rev, aValue); }
void SetRev(const nsAString& aRev, ErrorResult& aRv) {
SetHTMLAttr(nsGkAtoms::rev, aRev, aRv);
}
void GetTarget(DOMString& aValue) { GetHTMLAttr(nsGkAtoms::target, aValue); }
void SetTarget(const nsAString& aTarget, ErrorResult& aRv) {
SetHTMLAttr(nsGkAtoms::target, aTarget, aRv);
}
void GetIntegrity(nsAString& aIntegrity) const {
GetHTMLAttr(nsGkAtoms::integrity, aIntegrity);
}
void SetIntegrity(const nsAString& aIntegrity, ErrorResult& aRv) {
SetHTMLAttr(nsGkAtoms::integrity, aIntegrity, aRv);
}
void SetReferrerPolicy(const nsAString& aReferrer, ErrorResult& aError) {
SetHTMLAttr(nsGkAtoms::referrerpolicy, aReferrer, aError);
}
void GetReferrerPolicy(nsAString& aReferrer) {
GetEnumAttr(nsGkAtoms::referrerpolicy, "", aReferrer);
}
void GetImageSrcset(nsAString& aImageSrcset) {
GetHTMLAttr(nsGkAtoms::imagesrcset, aImageSrcset);
}
void SetImageSrcset(const nsAString& aImageSrcset, ErrorResult& aError) {
SetHTMLAttr(nsGkAtoms::imagesrcset, aImageSrcset, aError);
}
void GetImageSizes(nsAString& aImageSizes) {
GetHTMLAttr(nsGkAtoms::imagesizes, aImageSizes);
}
void SetImageSizes(const nsAString& aImageSizes, ErrorResult& aError) {
SetHTMLAttr(nsGkAtoms::imagesizes, aImageSizes, aError);
}
CORSMode GetCORSMode() const {
return AttrValueToCORSMode(GetParsedAttr(nsGkAtoms::crossorigin));
}
nsDOMTokenList* Blocking();
bool IsPotentiallyRenderBlocking() override;
void NodeInfoChanged(Document* aOldDoc) final {
mCachedURI = nullptr;
nsGenericHTMLElement::NodeInfoChanged(aOldDoc);
}
protected:
virtual ~HTMLLinkElement();
void GetContentPolicyMimeTypeMedia(nsAttrValue& aAsAttr,
nsContentPolicyType& aPolicyType,
nsString& aMimeType, nsAString& aMedia);
void TryDNSPrefetchOrPreconnectOrPrefetchOrPreloadOrPrerender();
void UpdatePreload(nsAtom* aName, const nsAttrValue* aValue,
const nsAttrValue* aOldValue);
void CancelPrefetchOrPreload();
void StartPreload(nsContentPolicyType policyType);
void CancelPreload();
// Returns whether the type attribute specifies the text/css mime type for
// link elements.
static bool IsCSSMimeTypeAttributeForLinkElement(
const mozilla::dom::Element&);
// LinkStyle
nsIContent& AsContent() final { return *this; }
const LinkStyle* AsLinkStyle() const final { return this; }
Maybe<SheetInfo> GetStyleSheetInfo() final;
RefPtr<nsDOMTokenList> mRelList;
RefPtr<nsDOMTokenList> mSizes;
RefPtr<nsDOMTokenList> mBlocking;
// A weak reference to our preload is held only to cancel the preload when
// this node updates or unbounds from the tree. We want to prevent cycles,
// the preload is held alive by other means.
WeakPtr<PreloaderBase> mPreload;
// The cached href attribute value.
nsCOMPtr<nsIURI> mCachedURI;
// The "explicitly enabled" flag. This flag is set whenever the `disabled`
// attribute is explicitly unset, and makes alternate stylesheets not be
// disabled by default anymore.
//
// See https://github.com/whatwg/html/issues/3840#issuecomment-481034206.
bool mExplicitlyEnabled = false;
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_HTMLLinkElement_h
|
