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/. */
7 /* Data from presentational HTML attributes and style attributes */
9 #include "mozilla/AttributeStyles.h"
11 #include "nsGkAtoms.h"
12 #include "nsPresContext.h"
13 #include "mozilla/dom/Document.h"
14 #include "mozilla/dom/DocumentInlines.h"
15 #include "mozilla/dom/Element.h"
16 #include "nsStyleConsts.h"
18 #include "nsHashKeys.h"
19 #include "mozilla/DeclarationBlock.h"
20 #include "mozilla/MemoryReporting.h"
21 #include "mozilla/OperatorNewExtensions.h"
22 #include "mozilla/PresShell.h"
23 #include "mozilla/RestyleManager.h"
24 #include "mozilla/ServoBindings.h"
25 #include "mozilla/ServoStyleSet.h"
27 using namespace mozilla::dom
;
31 // -----------------------------------------------------------
33 AttributeStyles::AttributeStyles(Document
* aDocument
) : mDocument(aDocument
) {
34 MOZ_ASSERT(aDocument
);
37 void AttributeStyles::SetOwningDocument(Document
* aDocument
) {
38 mDocument
= aDocument
; // not refcounted
41 void AttributeStyles::Reset() {
42 mServoUnvisitedLinkDecl
= nullptr;
43 mServoVisitedLinkDecl
= nullptr;
44 mServoActiveLinkDecl
= nullptr;
47 nsresult
AttributeStyles::ImplLinkColorSetter(
48 RefPtr
<StyleLockedDeclarationBlock
>& aDecl
, nscolor aColor
) {
49 if (!mDocument
|| !mDocument
->GetPresShell()) {
53 MOZ_ASSERT(!ServoStyleSet::IsInServoTraversal());
54 aDecl
= Servo_DeclarationBlock_CreateEmpty().Consume();
55 Servo_DeclarationBlock_SetColorValue(aDecl
.get(), eCSSProperty_color
, aColor
);
57 // Now make sure we restyle any links that might need it. This
58 // shouldn't happen often, so just rebuilding everything is ok.
59 if (Element
* root
= mDocument
->GetRootElement()) {
60 RestyleManager
* rm
= mDocument
->GetPresContext()->RestyleManager();
61 rm
->PostRestyleEvent(root
, RestyleHint::RestyleSubtree(), nsChangeHint(0));
66 nsresult
AttributeStyles::SetLinkColor(nscolor aColor
) {
67 return ImplLinkColorSetter(mServoUnvisitedLinkDecl
, aColor
);
70 nsresult
AttributeStyles::SetActiveLinkColor(nscolor aColor
) {
71 return ImplLinkColorSetter(mServoActiveLinkDecl
, aColor
);
74 nsresult
AttributeStyles::SetVisitedLinkColor(nscolor aColor
) {
75 return ImplLinkColorSetter(mServoVisitedLinkDecl
, aColor
);
78 size_t AttributeStyles::DOMSizeOfIncludingThis(
79 MallocSizeOf aMallocSizeOf
) const {
80 size_t n
= aMallocSizeOf(this);
81 // Measurement of the following members may be added later if DMD finds it is
83 // - mServoUnvisitedLinkDecl;
84 // - mServoVisitedLinkDecl;
85 // - mServoActiveLinkDecl;
87 // The following members are not measured:
88 // - mDocument, because it's non-owning
92 AttributeStyles::~AttributeStyles() {
93 // We may go away before all of our cached style attributes do, so clean up
95 for (auto iter
= mCachedStyleAttrs
.Iter(); !iter
.Done(); iter
.Next()) {
96 MiscContainer
*& value
= iter
.Data();
98 // Ideally we'd just call MiscContainer::Evict, but we can't do that since
99 // we're iterating the hashtable.
100 if (value
->mType
== nsAttrValue::eCSSDeclaration
) {
101 DeclarationBlock
* declaration
= value
->mValue
.mCSSDeclaration
;
102 declaration
->SetAttributeStyles(nullptr);
104 MOZ_ASSERT_UNREACHABLE("unexpected cached nsAttrValue type");
107 value
->mValue
.mCached
= 0;
112 } // namespace mozilla