The Tor Browser / file comparison
comparison: content/xul/templates/src/nsXULTemplateResultRDF.cpp
content/xul/templates/src/nsXULTemplateResultRDF.cpp
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:0ab437a5e633 |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #include "nsXULTemplateResultRDF.h" | |
| 7 #include "nsXULContentUtils.h" | |
| 8 | |
| 9 // XXXndeakin for some reason, making this class have classinfo breaks trees. | |
| 10 //#include "nsIDOMClassInfo.h" | |
| 11 | |
| 12 NS_IMPL_CYCLE_COLLECTION(nsXULTemplateResultRDF, mQuery) | |
| 13 | |
| 14 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsXULTemplateResultRDF) | |
| 15 NS_INTERFACE_MAP_ENTRY(nsIXULTemplateResult) | |
| 16 NS_INTERFACE_MAP_ENTRY(nsISupports) | |
| 17 NS_INTERFACE_MAP_END | |
| 18 | |
| 19 NS_IMPL_CYCLE_COLLECTING_ADDREF(nsXULTemplateResultRDF) | |
| 20 NS_IMPL_CYCLE_COLLECTING_RELEASE(nsXULTemplateResultRDF) | |
| 21 | |
| 22 nsXULTemplateResultRDF::nsXULTemplateResultRDF(nsIRDFResource* aNode) | |
| 23 : mQuery(nullptr), | |
| 24 mNode(aNode) | |
| 25 { | |
| 26 } | |
| 27 | |
| 28 nsXULTemplateResultRDF::nsXULTemplateResultRDF(nsRDFQuery* aQuery, | |
| 29 const Instantiation& aInst, | |
| 30 nsIRDFResource *aNode) | |
| 31 : mQuery(aQuery), | |
| 32 mNode(aNode), | |
| 33 mInst(aInst) | |
| 34 { | |
| 35 } | |
| 36 | |
| 37 nsXULTemplateResultRDF::~nsXULTemplateResultRDF() | |
| 38 { | |
| 39 } | |
| 40 | |
| 41 NS_IMETHODIMP | |
| 42 nsXULTemplateResultRDF::GetIsContainer(bool* aIsContainer) | |
| 43 { | |
| 44 *aIsContainer = false; | |
| 45 | |
| 46 if (mNode) { | |
| 47 nsXULTemplateQueryProcessorRDF* processor = GetProcessor(); | |
| 48 if (processor) | |
| 49 return processor->CheckContainer(mNode, aIsContainer); | |
| 50 } | |
| 51 | |
| 52 return NS_OK; | |
| 53 } | |
| 54 | |
| 55 NS_IMETHODIMP | |
| 56 nsXULTemplateResultRDF::GetIsEmpty(bool* aIsEmpty) | |
| 57 { | |
| 58 *aIsEmpty = true; | |
| 59 | |
| 60 if (mNode) { | |
| 61 nsXULTemplateQueryProcessorRDF* processor = GetProcessor(); | |
| 62 if (processor) | |
| 63 return processor->CheckEmpty(mNode, aIsEmpty); | |
| 64 } | |
| 65 | |
| 66 return NS_OK; | |
| 67 } | |
| 68 | |
| 69 NS_IMETHODIMP | |
| 70 nsXULTemplateResultRDF::GetMayProcessChildren(bool* aMayProcessChildren) | |
| 71 { | |
| 72 // RDF always allows recursion | |
| 73 *aMayProcessChildren = true; | |
| 74 return NS_OK; | |
| 75 } | |
| 76 | |
| 77 NS_IMETHODIMP | |
| 78 nsXULTemplateResultRDF::GetId(nsAString& aId) | |
| 79 { | |
| 80 if (! mNode) | |
| 81 return NS_ERROR_FAILURE; | |
| 82 | |
| 83 const char* uri; | |
| 84 mNode->GetValueConst(&uri); | |
| 85 | |
| 86 CopyUTF8toUTF16(uri, aId); | |
| 87 | |
| 88 return NS_OK; | |
| 89 } | |
| 90 | |
| 91 NS_IMETHODIMP | |
| 92 nsXULTemplateResultRDF::GetResource(nsIRDFResource** aResource) | |
| 93 { | |
| 94 *aResource = mNode; | |
| 95 NS_IF_ADDREF(*aResource); | |
| 96 return NS_OK; | |
| 97 } | |
| 98 | |
| 99 NS_IMETHODIMP | |
| 100 nsXULTemplateResultRDF::GetType(nsAString& aType) | |
| 101 { | |
| 102 aType.Truncate(); | |
| 103 | |
| 104 nsresult rv = NS_OK; | |
| 105 | |
| 106 nsXULTemplateQueryProcessorRDF* processor = GetProcessor(); | |
| 107 if (processor) { | |
| 108 bool found; | |
| 109 rv = processor->CheckIsSeparator(mNode, &found); | |
| 110 if (NS_SUCCEEDED(rv) && found) | |
| 111 aType.AssignLiteral("separator"); | |
| 112 } | |
| 113 | |
| 114 return rv; | |
| 115 } | |
| 116 | |
| 117 NS_IMETHODIMP | |
| 118 nsXULTemplateResultRDF::GetBindingFor(nsIAtom* aVar, nsAString& aValue) | |
| 119 { | |
| 120 nsCOMPtr<nsIRDFNode> val; | |
| 121 GetAssignment(aVar, getter_AddRefs(val)); | |
| 122 | |
| 123 return nsXULContentUtils::GetTextForNode(val, aValue); | |
| 124 } | |
| 125 | |
| 126 NS_IMETHODIMP | |
| 127 nsXULTemplateResultRDF::GetBindingObjectFor(nsIAtom* aVar, nsISupports** aValue) | |
| 128 { | |
| 129 GetAssignment(aVar, (nsIRDFNode **)aValue); | |
| 130 | |
| 131 return NS_OK; | |
| 132 } | |
| 133 | |
| 134 NS_IMETHODIMP | |
| 135 nsXULTemplateResultRDF::RuleMatched(nsISupports* aQuery, nsIDOMNode* aRuleNode) | |
| 136 { | |
| 137 // when a rule matches, set the bindings that must be used. | |
| 138 nsXULTemplateQueryProcessorRDF* processor = GetProcessor(); | |
| 139 if (processor) { | |
| 140 RDFBindingSet* bindings = processor->GetBindingsForRule(aRuleNode); | |
| 141 if (bindings) { | |
| 142 nsresult rv = mBindingValues.SetBindingSet(bindings); | |
| 143 if (NS_FAILED(rv)) | |
| 144 return rv; | |
| 145 | |
| 146 bindings->AddDependencies(mNode, this); | |
| 147 } | |
| 148 } | |
| 149 | |
| 150 return NS_OK; | |
| 151 } | |
| 152 | |
| 153 NS_IMETHODIMP | |
| 154 nsXULTemplateResultRDF::HasBeenRemoved() | |
| 155 { | |
| 156 // when a result is no longer used, clean up the dependencies and | |
| 157 // memory elements that refer to it | |
| 158 mBindingValues.RemoveDependencies(mNode, this); | |
| 159 | |
| 160 nsXULTemplateQueryProcessorRDF* processor = GetProcessor(); | |
| 161 if (processor) | |
| 162 processor->RemoveMemoryElements(mInst, this); | |
| 163 | |
| 164 return NS_OK; | |
| 165 } | |
| 166 | |
| 167 | |
| 168 void | |
| 169 nsXULTemplateResultRDF::GetAssignment(nsIAtom* aVar, nsIRDFNode** aValue) | |
| 170 { | |
| 171 // look up a variable in the assignments map | |
| 172 *aValue = nullptr; | |
| 173 mInst.mAssignments.GetAssignmentFor(aVar, aValue); | |
| 174 | |
| 175 // if not found, look up the variable in the bindings | |
| 176 if (! *aValue) | |
| 177 mBindingValues.GetAssignmentFor(this, aVar, aValue); | |
| 178 } | |
| 179 | |
| 180 | |
| 181 bool | |
| 182 nsXULTemplateResultRDF::SyncAssignments(nsIRDFResource* aSubject, | |
| 183 nsIRDFResource* aPredicate, | |
| 184 nsIRDFNode* aTarget) | |
| 185 { | |
| 186 // synchronize the bindings when an assertion is added or removed | |
| 187 RDFBindingSet* bindingset = mBindingValues.GetBindingSet(); | |
| 188 if (bindingset) { | |
| 189 return bindingset->SyncAssignments(aSubject, aPredicate, aTarget, | |
| 190 (aSubject == mNode) ? mQuery->GetMemberVariable() : nullptr, | |
| 191 this, mBindingValues); | |
| 192 } | |
| 193 | |
| 194 return false; | |
| 195 } | |
| 196 | |
| 197 bool | |
| 198 nsXULTemplateResultRDF::HasMemoryElement(const MemoryElement& aMemoryElement) | |
| 199 { | |
| 200 MemoryElementSet::ConstIterator last = mInst.mSupport.Last(); | |
| 201 for (MemoryElementSet::ConstIterator element = mInst.mSupport.First(); | |
| 202 element != last; ++element) { | |
| 203 if ((*element).Equals(aMemoryElement)) | |
| 204 return true; | |
| 205 } | |
| 206 | |
| 207 return false; | |
| 208 } |
