The Tor Browser / file comparison
comparison: rdf/util/src/nsRDFResource.cpp
rdf/util/src/nsRDFResource.cpp
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
equal
deleted
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replaced
| -1:000000000000 | 0:d040989ce9da |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; 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 "nsRDFResource.h" | |
| 7 #include "nsIServiceManager.h" | |
| 8 #include "nsIRDFDelegateFactory.h" | |
| 9 #include "nsIRDFService.h" | |
| 10 #include "nsRDFCID.h" | |
| 11 #include "prlog.h" | |
| 12 #include "nsComponentManagerUtils.h" | |
| 13 #include "nsServiceManagerUtils.h" | |
| 14 | |
| 15 static NS_DEFINE_CID(kRDFServiceCID, NS_RDFSERVICE_CID); | |
| 16 | |
| 17 nsIRDFService* nsRDFResource::gRDFService = nullptr; | |
| 18 nsrefcnt nsRDFResource::gRDFServiceRefCnt = 0; | |
| 19 | |
| 20 //////////////////////////////////////////////////////////////////////////////// | |
| 21 | |
| 22 nsRDFResource::nsRDFResource(void) | |
| 23 : mDelegates(nullptr) | |
| 24 { | |
| 25 } | |
| 26 | |
| 27 nsRDFResource::~nsRDFResource(void) | |
| 28 { | |
| 29 // Release all of the delegate objects | |
| 30 while (mDelegates) { | |
| 31 DelegateEntry* doomed = mDelegates; | |
| 32 mDelegates = mDelegates->mNext; | |
| 33 delete doomed; | |
| 34 } | |
| 35 | |
| 36 if (!gRDFService) | |
| 37 return; | |
| 38 | |
| 39 gRDFService->UnregisterResource(this); | |
| 40 | |
| 41 if (--gRDFServiceRefCnt == 0) | |
| 42 NS_RELEASE(gRDFService); | |
| 43 } | |
| 44 | |
| 45 NS_IMPL_ISUPPORTS(nsRDFResource, nsIRDFResource, nsIRDFNode) | |
| 46 | |
| 47 //////////////////////////////////////////////////////////////////////////////// | |
| 48 // nsIRDFNode methods: | |
| 49 | |
| 50 NS_IMETHODIMP | |
| 51 nsRDFResource::EqualsNode(nsIRDFNode* aNode, bool* aResult) | |
| 52 { | |
| 53 NS_PRECONDITION(aNode != nullptr, "null ptr"); | |
| 54 if (! aNode) | |
| 55 return NS_ERROR_NULL_POINTER; | |
| 56 | |
| 57 nsresult rv; | |
| 58 nsIRDFResource* resource; | |
| 59 rv = aNode->QueryInterface(NS_GET_IID(nsIRDFResource), (void**)&resource); | |
| 60 if (NS_SUCCEEDED(rv)) { | |
| 61 *aResult = (static_cast<nsIRDFResource*>(this) == resource); | |
| 62 NS_RELEASE(resource); | |
| 63 return NS_OK; | |
| 64 } | |
| 65 else if (rv == NS_NOINTERFACE) { | |
| 66 *aResult = false; | |
| 67 return NS_OK; | |
| 68 } | |
| 69 else { | |
| 70 return rv; | |
| 71 } | |
| 72 } | |
| 73 | |
| 74 //////////////////////////////////////////////////////////////////////////////// | |
| 75 // nsIRDFResource methods: | |
| 76 | |
| 77 NS_IMETHODIMP | |
| 78 nsRDFResource::Init(const char* aURI) | |
| 79 { | |
| 80 NS_PRECONDITION(aURI != nullptr, "null ptr"); | |
| 81 if (! aURI) | |
| 82 return NS_ERROR_NULL_POINTER; | |
| 83 | |
| 84 mURI = aURI; | |
| 85 | |
| 86 if (gRDFServiceRefCnt++ == 0) { | |
| 87 nsresult rv = CallGetService(kRDFServiceCID, &gRDFService); | |
| 88 if (NS_FAILED(rv)) return rv; | |
| 89 } | |
| 90 | |
| 91 // don't replace an existing resource with the same URI automatically | |
| 92 return gRDFService->RegisterResource(this, true); | |
| 93 } | |
| 94 | |
| 95 NS_IMETHODIMP | |
| 96 nsRDFResource::GetValue(char* *aURI) | |
| 97 { | |
| 98 NS_ASSERTION(aURI, "Null out param."); | |
| 99 | |
| 100 *aURI = ToNewCString(mURI); | |
| 101 | |
| 102 if (!*aURI) | |
| 103 return NS_ERROR_OUT_OF_MEMORY; | |
| 104 | |
| 105 return NS_OK; | |
| 106 } | |
| 107 | |
| 108 NS_IMETHODIMP | |
| 109 nsRDFResource::GetValueUTF8(nsACString& aResult) | |
| 110 { | |
| 111 aResult = mURI; | |
| 112 return NS_OK; | |
| 113 } | |
| 114 | |
| 115 NS_IMETHODIMP | |
| 116 nsRDFResource::GetValueConst(const char** aURI) | |
| 117 { | |
| 118 *aURI = mURI.get(); | |
| 119 return NS_OK; | |
| 120 } | |
| 121 | |
| 122 NS_IMETHODIMP | |
| 123 nsRDFResource::EqualsString(const char* aURI, bool* aResult) | |
| 124 { | |
| 125 NS_PRECONDITION(aURI != nullptr, "null ptr"); | |
| 126 if (! aURI) | |
| 127 return NS_ERROR_NULL_POINTER; | |
| 128 | |
| 129 NS_PRECONDITION(aResult, "null ptr"); | |
| 130 | |
| 131 *aResult = mURI.Equals(aURI); | |
| 132 return NS_OK; | |
| 133 } | |
| 134 | |
| 135 NS_IMETHODIMP | |
| 136 nsRDFResource::GetDelegate(const char* aKey, REFNSIID aIID, void** aResult) | |
| 137 { | |
| 138 NS_PRECONDITION(aKey != nullptr, "null ptr"); | |
| 139 if (! aKey) | |
| 140 return NS_ERROR_NULL_POINTER; | |
| 141 | |
| 142 nsresult rv; | |
| 143 *aResult = nullptr; | |
| 144 | |
| 145 DelegateEntry* entry = mDelegates; | |
| 146 while (entry) { | |
| 147 if (entry->mKey.Equals(aKey)) { | |
| 148 rv = entry->mDelegate->QueryInterface(aIID, aResult); | |
| 149 return rv; | |
| 150 } | |
| 151 | |
| 152 entry = entry->mNext; | |
| 153 } | |
| 154 | |
| 155 // Construct a ContractID of the form "@mozilla.org/rdf/delegate/[key]/[scheme];1 | |
| 156 nsAutoCString contractID(NS_RDF_DELEGATEFACTORY_CONTRACTID_PREFIX); | |
| 157 contractID.Append(aKey); | |
| 158 contractID.Append("&scheme="); | |
| 159 | |
| 160 int32_t i = mURI.FindChar(':'); | |
| 161 contractID += StringHead(mURI, i); | |
| 162 | |
| 163 nsCOMPtr<nsIRDFDelegateFactory> delegateFactory = | |
| 164 do_CreateInstance(contractID.get(), &rv); | |
| 165 if (NS_FAILED(rv)) return rv; | |
| 166 | |
| 167 rv = delegateFactory->CreateDelegate(this, aKey, aIID, aResult); | |
| 168 if (NS_FAILED(rv)) return rv; | |
| 169 | |
| 170 // Okay, we've successfully created a delegate. Let's remember it. | |
| 171 entry = new DelegateEntry; | |
| 172 if (! entry) { | |
| 173 NS_RELEASE(*reinterpret_cast<nsISupports**>(aResult)); | |
| 174 return NS_ERROR_OUT_OF_MEMORY; | |
| 175 } | |
| 176 | |
| 177 entry->mKey = aKey; | |
| 178 entry->mDelegate = do_QueryInterface(*reinterpret_cast<nsISupports**>(aResult), &rv); | |
| 179 if (NS_FAILED(rv)) { | |
| 180 NS_ERROR("nsRDFResource::GetDelegate(): can't QI to nsISupports!"); | |
| 181 | |
| 182 delete entry; | |
| 183 NS_RELEASE(*reinterpret_cast<nsISupports**>(aResult)); | |
| 184 return NS_ERROR_FAILURE; | |
| 185 } | |
| 186 | |
| 187 entry->mNext = mDelegates; | |
| 188 | |
| 189 mDelegates = entry; | |
| 190 | |
| 191 return NS_OK; | |
| 192 } | |
| 193 | |
| 194 NS_IMETHODIMP | |
| 195 nsRDFResource::ReleaseDelegate(const char* aKey) | |
| 196 { | |
| 197 NS_PRECONDITION(aKey != nullptr, "null ptr"); | |
| 198 if (! aKey) | |
| 199 return NS_ERROR_NULL_POINTER; | |
| 200 | |
| 201 DelegateEntry* entry = mDelegates; | |
| 202 DelegateEntry** link = &mDelegates; | |
| 203 | |
| 204 while (entry) { | |
| 205 if (entry->mKey.Equals(aKey)) { | |
| 206 *link = entry->mNext; | |
| 207 delete entry; | |
| 208 return NS_OK; | |
| 209 } | |
| 210 | |
| 211 link = &(entry->mNext); | |
| 212 entry = entry->mNext; | |
| 213 } | |
| 214 | |
| 215 NS_WARNING("nsRDFResource::ReleaseDelegate() no delegate found"); | |
| 216 return NS_OK; | |
| 217 } | |
| 218 | |
| 219 | |
| 220 | |
| 221 //////////////////////////////////////////////////////////////////////////////// |
