The Tor Browser / file comparison
comparison: content/xul/templates/src/nsXMLBinding.cpp
content/xul/templates/src/nsXMLBinding.cpp
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:b603780263b4 |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 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 "nsXULTemplateQueryProcessorXML.h" | |
| 7 #include "nsXULTemplateResultXML.h" | |
| 8 #include "nsXMLBinding.h" | |
| 9 | |
| 10 NS_IMPL_CYCLE_COLLECTING_NATIVE_ADDREF(nsXMLBindingSet) | |
| 11 NS_IMPL_CYCLE_COLLECTING_NATIVE_RELEASE(nsXMLBindingSet) | |
| 12 | |
| 13 NS_IMPL_CYCLE_COLLECTION_CLASS(nsXMLBindingSet) | |
| 14 | |
| 15 NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsXMLBindingSet) | |
| 16 nsXMLBinding* binding = tmp->mFirst; | |
| 17 while (binding) { | |
| 18 binding->mExpr = nullptr; | |
| 19 binding = binding->mNext; | |
| 20 } | |
| 21 NS_IMPL_CYCLE_COLLECTION_UNLINK_END | |
| 22 | |
| 23 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsXMLBindingSet) | |
| 24 nsXMLBinding* binding = tmp->mFirst; | |
| 25 while (binding) { | |
| 26 NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "nsXMLBinding::mExpr"); | |
| 27 cb.NoteXPCOMChild(binding->mExpr); | |
| 28 binding = binding->mNext; | |
| 29 } | |
| 30 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END | |
| 31 | |
| 32 NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(nsXMLBindingSet, AddRef) | |
| 33 NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(nsXMLBindingSet, Release) | |
| 34 | |
| 35 nsresult | |
| 36 nsXMLBindingSet::AddBinding(nsIAtom* aVar, nsIDOMXPathExpression* aExpr) | |
| 37 { | |
| 38 nsAutoPtr<nsXMLBinding> newbinding(new nsXMLBinding(aVar, aExpr)); | |
| 39 NS_ENSURE_TRUE(newbinding, NS_ERROR_OUT_OF_MEMORY); | |
| 40 | |
| 41 if (mFirst) { | |
| 42 nsXMLBinding* binding = mFirst; | |
| 43 | |
| 44 while (binding) { | |
| 45 // if the target variable is already used in a binding, ignore it | |
| 46 // since it won't be useful for anything | |
| 47 if (binding->mVar == aVar) | |
| 48 return NS_OK; | |
| 49 | |
| 50 // add the binding at the end of the list | |
| 51 if (!binding->mNext) { | |
| 52 binding->mNext = newbinding; | |
| 53 break; | |
| 54 } | |
| 55 | |
| 56 binding = binding->mNext; | |
| 57 } | |
| 58 } | |
| 59 else { | |
| 60 mFirst = newbinding; | |
| 61 } | |
| 62 | |
| 63 return NS_OK; | |
| 64 } | |
| 65 | |
| 66 int32_t | |
| 67 nsXMLBindingSet::LookupTargetIndex(nsIAtom* aTargetVariable, | |
| 68 nsXMLBinding** aBinding) | |
| 69 { | |
| 70 int32_t idx = 0; | |
| 71 nsXMLBinding* binding = mFirst; | |
| 72 | |
| 73 while (binding) { | |
| 74 if (binding->mVar == aTargetVariable) { | |
| 75 *aBinding = binding; | |
| 76 return idx; | |
| 77 } | |
| 78 idx++; | |
| 79 binding = binding->mNext; | |
| 80 } | |
| 81 | |
| 82 *aBinding = nullptr; | |
| 83 return -1; | |
| 84 } | |
| 85 | |
| 86 void | |
| 87 nsXMLBindingValues::GetAssignmentFor(nsXULTemplateResultXML* aResult, | |
| 88 nsXMLBinding* aBinding, | |
| 89 int32_t aIndex, | |
| 90 uint16_t aType, | |
| 91 nsIDOMXPathResult** aValue) | |
| 92 { | |
| 93 *aValue = mValues.SafeObjectAt(aIndex); | |
| 94 | |
| 95 if (!*aValue) { | |
| 96 nsCOMPtr<nsIDOMNode> contextNode; | |
| 97 aResult->GetNode(getter_AddRefs(contextNode)); | |
| 98 if (contextNode) { | |
| 99 nsCOMPtr<nsISupports> resultsupports; | |
| 100 aBinding->mExpr->Evaluate(contextNode, aType, | |
| 101 nullptr, getter_AddRefs(resultsupports)); | |
| 102 | |
| 103 nsCOMPtr<nsIDOMXPathResult> result = do_QueryInterface(resultsupports); | |
| 104 if (result && mValues.ReplaceObjectAt(result, aIndex)) | |
| 105 *aValue = result; | |
| 106 } | |
| 107 } | |
| 108 | |
| 109 NS_IF_ADDREF(*aValue); | |
| 110 } | |
| 111 | |
| 112 void | |
| 113 nsXMLBindingValues::GetNodeAssignmentFor(nsXULTemplateResultXML* aResult, | |
| 114 nsXMLBinding* aBinding, | |
| 115 int32_t aIndex, | |
| 116 nsIDOMNode** aNode) | |
| 117 { | |
| 118 nsCOMPtr<nsIDOMXPathResult> result; | |
| 119 GetAssignmentFor(aResult, aBinding, aIndex, | |
| 120 nsIDOMXPathResult::FIRST_ORDERED_NODE_TYPE, | |
| 121 getter_AddRefs(result)); | |
| 122 | |
| 123 if (result) | |
| 124 result->GetSingleNodeValue(aNode); | |
| 125 else | |
| 126 *aNode = nullptr; | |
| 127 } | |
| 128 | |
| 129 void | |
| 130 nsXMLBindingValues::GetStringAssignmentFor(nsXULTemplateResultXML* aResult, | |
| 131 nsXMLBinding* aBinding, | |
| 132 int32_t aIndex, | |
| 133 nsAString& aValue) | |
| 134 { | |
| 135 nsCOMPtr<nsIDOMXPathResult> result; | |
| 136 GetAssignmentFor(aResult, aBinding, aIndex, | |
| 137 nsIDOMXPathResult::STRING_TYPE, getter_AddRefs(result)); | |
| 138 | |
| 139 if (result) | |
| 140 result->GetStringValue(aValue); | |
| 141 else | |
| 142 aValue.Truncate(); | |
| 143 } |
