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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 : /* representation of CSSPageRule for stylo */
8 :
9 : #include "mozilla/ServoPageRule.h"
10 :
11 : #include "mozilla/DeclarationBlockInlines.h"
12 : #include "mozilla/ServoBindings.h"
13 : #include "mozilla/ServoDeclarationBlock.h"
14 :
15 : using namespace mozilla::dom;
16 :
17 : namespace mozilla {
18 :
19 : // -- ServoPageRuleDeclaration ---------------------------------------
20 :
21 0 : ServoPageRuleDeclaration::ServoPageRuleDeclaration(
22 0 : already_AddRefed<RawServoDeclarationBlock> aDecls)
23 0 : : mDecls(new ServoDeclarationBlock(Move(aDecls)))
24 : {
25 0 : }
26 :
27 0 : ServoPageRuleDeclaration::~ServoPageRuleDeclaration()
28 : {
29 0 : }
30 :
31 : // QueryInterface implementation for ServoPageRuleDeclaration
32 0 : NS_INTERFACE_MAP_BEGIN(ServoPageRuleDeclaration)
33 0 : NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
34 : // We forward the cycle collection interfaces to Rule(), which is
35 : // never null (in fact, we're part of that object!)
36 0 : if (aIID.Equals(NS_GET_IID(nsCycleCollectionISupports)) ||
37 0 : aIID.Equals(NS_GET_IID(nsXPCOMCycleCollectionParticipant))) {
38 0 : return Rule()->QueryInterface(aIID, aInstancePtr);
39 : }
40 : else
41 0 : NS_IMPL_QUERY_TAIL_INHERITING(nsDOMCSSDeclaration)
42 :
43 0 : NS_IMPL_ADDREF_USING_AGGREGATOR(ServoPageRuleDeclaration, Rule())
44 0 : NS_IMPL_RELEASE_USING_AGGREGATOR(ServoPageRuleDeclaration, Rule())
45 :
46 : /* nsDOMCSSDeclaration implementation */
47 :
48 : NS_IMETHODIMP
49 0 : ServoPageRuleDeclaration::GetParentRule(nsIDOMCSSRule** aParent)
50 : {
51 0 : *aParent = do_AddRef(Rule()).take();
52 0 : return NS_OK;
53 : }
54 :
55 : nsINode*
56 0 : ServoPageRuleDeclaration::GetParentObject()
57 : {
58 0 : return Rule()->GetDocument();
59 : }
60 :
61 : DeclarationBlock*
62 0 : ServoPageRuleDeclaration::GetCSSDeclaration(Operation aOperation)
63 : {
64 0 : return mDecls;
65 : }
66 :
67 : nsresult
68 0 : ServoPageRuleDeclaration::SetCSSDeclaration(DeclarationBlock* aDecl)
69 : {
70 0 : MOZ_ASSERT(aDecl, "must be non-null");
71 0 : ServoPageRule* rule = Rule();
72 :
73 0 : if (aDecl != mDecls) {
74 0 : mDecls->SetOwningRule(nullptr);
75 0 : RefPtr<ServoDeclarationBlock> decls = aDecl->AsServo();
76 0 : Servo_PageRule_SetStyle(rule->Raw(), decls->Raw());
77 0 : mDecls = decls.forget();
78 0 : mDecls->SetOwningRule(rule);
79 : }
80 :
81 0 : return NS_OK;
82 : }
83 :
84 : nsIDocument*
85 0 : ServoPageRuleDeclaration::DocToUpdate()
86 : {
87 0 : return nullptr;
88 : }
89 :
90 : void
91 0 : ServoPageRuleDeclaration::GetCSSParsingEnvironment(
92 : CSSParsingEnvironment& aCSSParseEnv)
93 : {
94 0 : MOZ_ASSERT_UNREACHABLE("GetCSSParsingEnvironment "
95 : "shouldn't be calling for a Servo rule");
96 : GetCSSParsingEnvironmentForRule(Rule(), aCSSParseEnv);
97 : }
98 :
99 : nsDOMCSSDeclaration::ServoCSSParsingEnvironment
100 0 : ServoPageRuleDeclaration::GetServoCSSParsingEnvironment() const
101 : {
102 0 : return GetServoCSSParsingEnvironmentForRule(Rule());
103 : }
104 :
105 : // -- ServoPageRule --------------------------------------------------
106 :
107 0 : ServoPageRule::ServoPageRule(RefPtr<RawServoPageRule> aRawRule,
108 0 : uint32_t aLine, uint32_t aColumn)
109 : : CSSPageRule(aLine, aColumn)
110 0 : , mRawRule(Move(aRawRule))
111 0 : , mDecls(Servo_PageRule_GetStyle(mRawRule).Consume())
112 : {
113 0 : }
114 :
115 0 : ServoPageRule::~ServoPageRule()
116 : {
117 0 : }
118 :
119 0 : NS_IMPL_ADDREF_INHERITED(ServoPageRule, CSSPageRule)
120 0 : NS_IMPL_RELEASE_INHERITED(ServoPageRule, CSSPageRule)
121 :
122 : // QueryInterface implementation for PageRule
123 0 : NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(ServoPageRule)
124 0 : NS_INTERFACE_MAP_END_INHERITING(CSSPageRule)
125 :
126 : NS_IMPL_CYCLE_COLLECTION_CLASS(ServoPageRule)
127 :
128 0 : NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(ServoPageRule, CSSPageRule)
129 : // Keep this in sync with IsCCLeaf.
130 :
131 : // Trace the wrapper for our declaration. This just expands out
132 : // NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER which we can't use
133 : // directly because the wrapper is on the declaration, not on us.
134 0 : tmp->mDecls.TraceWrapper(aCallbacks, aClosure);
135 0 : NS_IMPL_CYCLE_COLLECTION_TRACE_END
136 :
137 0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(ServoPageRule, CSSPageRule)
138 : // Keep this in sync with IsCCLeaf.
139 :
140 : // Unlink the wrapper for our declaraton. This just expands out
141 : // NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER which we can't use
142 : // directly because the wrapper is on the declaration, not on us.
143 0 : tmp->mDecls.ReleaseWrapper(static_cast<nsISupports*>(p));
144 0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_END
145 :
146 0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(ServoPageRule, CSSPageRule)
147 : // Keep this in sync with IsCCLeaf.
148 0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
149 :
150 : bool
151 0 : ServoPageRule::IsCCLeaf() const
152 : {
153 0 : if (!Rule::IsCCLeaf()) {
154 0 : return false;
155 : }
156 :
157 0 : return !mDecls.PreservingWrapper();
158 : }
159 :
160 : already_AddRefed<css::Rule>
161 0 : ServoPageRule::Clone() const
162 : {
163 : // Rule::Clone is only used when CSSStyleSheetInner is cloned in
164 : // preparation of being mutated. However, ServoStyleSheet never clones
165 : // anything, so this method should never be called.
166 0 : MOZ_ASSERT_UNREACHABLE("Shouldn't be cloning ServoPageRule");
167 : return nullptr;
168 : }
169 :
170 : size_t
171 0 : ServoPageRule::SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const
172 : {
173 : // TODO Implement this!
174 0 : return aMallocSizeOf(this);
175 : }
176 :
177 : #ifdef DEBUG
178 : void
179 0 : ServoPageRule::List(FILE* out, int32_t aIndent) const
180 : {
181 0 : nsAutoCString str;
182 0 : for (int32_t i = 0; i < aIndent; i++) {
183 0 : str.AppendLiteral(" ");
184 : }
185 0 : Servo_PageRule_Debug(mRawRule, &str);
186 0 : fprintf_stderr(out, "%s\n", str.get());
187 0 : }
188 : #endif
189 :
190 : /* CSSRule implementation */
191 :
192 : void
193 0 : ServoPageRule::GetCssTextImpl(nsAString& aCssText) const
194 : {
195 0 : Servo_PageRule_GetCssText(mRawRule, &aCssText);
196 0 : }
197 :
198 : /* CSSPageRule implementation */
199 :
200 : nsICSSDeclaration*
201 0 : ServoPageRule::Style()
202 : {
203 0 : return &mDecls;
204 : }
205 :
206 : } // namespace mozilla
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