The Tor Browser / file comparison
comparison: dom/base/DOMRequest.cpp
dom/base/DOMRequest.cpp
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:7b639606138a |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* vim: set ts=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 file, | |
| 5 * You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #include "DOMRequest.h" | |
| 8 | |
| 9 #include "DOMError.h" | |
| 10 #include "nsCxPusher.h" | |
| 11 #include "nsThreadUtils.h" | |
| 12 #include "DOMCursor.h" | |
| 13 #include "nsIDOMEvent.h" | |
| 14 | |
| 15 using mozilla::dom::DOMRequest; | |
| 16 using mozilla::dom::DOMRequestService; | |
| 17 using mozilla::dom::DOMCursor; | |
| 18 using mozilla::AutoSafeJSContext; | |
| 19 | |
| 20 DOMRequest::DOMRequest(nsPIDOMWindow* aWindow) | |
| 21 : DOMEventTargetHelper(aWindow->IsInnerWindow() ? | |
| 22 aWindow : aWindow->GetCurrentInnerWindow()) | |
| 23 , mResult(JSVAL_VOID) | |
| 24 , mDone(false) | |
| 25 { | |
| 26 } | |
| 27 | |
| 28 NS_IMPL_CYCLE_COLLECTION_CLASS(DOMRequest) | |
| 29 | |
| 30 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(DOMRequest, | |
| 31 DOMEventTargetHelper) | |
| 32 NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mError) | |
| 33 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END | |
| 34 | |
| 35 NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(DOMRequest, | |
| 36 DOMEventTargetHelper) | |
| 37 NS_IMPL_CYCLE_COLLECTION_UNLINK(mError) | |
| 38 tmp->mResult = JSVAL_VOID; | |
| 39 NS_IMPL_CYCLE_COLLECTION_UNLINK_END | |
| 40 | |
| 41 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(DOMRequest, | |
| 42 DOMEventTargetHelper) | |
| 43 // Don't need NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER because | |
| 44 // DOMEventTargetHelper does it for us. | |
| 45 NS_IMPL_CYCLE_COLLECTION_TRACE_JSVAL_MEMBER_CALLBACK(mResult) | |
| 46 NS_IMPL_CYCLE_COLLECTION_TRACE_END | |
| 47 | |
| 48 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(DOMRequest) | |
| 49 NS_INTERFACE_MAP_ENTRY(nsIDOMDOMRequest) | |
| 50 NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper) | |
| 51 | |
| 52 NS_IMPL_ADDREF_INHERITED(DOMRequest, DOMEventTargetHelper) | |
| 53 NS_IMPL_RELEASE_INHERITED(DOMRequest, DOMEventTargetHelper) | |
| 54 | |
| 55 /* virtual */ JSObject* | |
| 56 DOMRequest::WrapObject(JSContext* aCx) | |
| 57 { | |
| 58 return DOMRequestBinding::Wrap(aCx, this); | |
| 59 } | |
| 60 | |
| 61 NS_IMPL_EVENT_HANDLER(DOMRequest, success) | |
| 62 NS_IMPL_EVENT_HANDLER(DOMRequest, error) | |
| 63 | |
| 64 NS_IMETHODIMP | |
| 65 DOMRequest::GetReadyState(nsAString& aReadyState) | |
| 66 { | |
| 67 DOMRequestReadyState readyState = ReadyState(); | |
| 68 switch (readyState) { | |
| 69 case DOMRequestReadyState::Pending: | |
| 70 aReadyState.AssignLiteral("pending"); | |
| 71 break; | |
| 72 case DOMRequestReadyState::Done: | |
| 73 aReadyState.AssignLiteral("done"); | |
| 74 break; | |
| 75 default: | |
| 76 MOZ_CRASH("Unrecognized readyState."); | |
| 77 } | |
| 78 | |
| 79 return NS_OK; | |
| 80 } | |
| 81 | |
| 82 NS_IMETHODIMP | |
| 83 DOMRequest::GetResult(JS::MutableHandle<JS::Value> aResult) | |
| 84 { | |
| 85 GetResult(nullptr, aResult); | |
| 86 return NS_OK; | |
| 87 } | |
| 88 | |
| 89 NS_IMETHODIMP | |
| 90 DOMRequest::GetError(nsISupports** aError) | |
| 91 { | |
| 92 NS_IF_ADDREF(*aError = GetError()); | |
| 93 return NS_OK; | |
| 94 } | |
| 95 | |
| 96 void | |
| 97 DOMRequest::FireSuccess(JS::Handle<JS::Value> aResult) | |
| 98 { | |
| 99 NS_ASSERTION(!mDone, "mDone shouldn't have been set to true already!"); | |
| 100 NS_ASSERTION(!mError, "mError shouldn't have been set!"); | |
| 101 NS_ASSERTION(mResult == JSVAL_VOID, "mResult shouldn't have been set!"); | |
| 102 | |
| 103 mDone = true; | |
| 104 if (JSVAL_IS_GCTHING(aResult)) { | |
| 105 RootResultVal(); | |
| 106 } | |
| 107 mResult = aResult; | |
| 108 | |
| 109 FireEvent(NS_LITERAL_STRING("success"), false, false); | |
| 110 } | |
| 111 | |
| 112 void | |
| 113 DOMRequest::FireError(const nsAString& aError) | |
| 114 { | |
| 115 NS_ASSERTION(!mDone, "mDone shouldn't have been set to true already!"); | |
| 116 NS_ASSERTION(!mError, "mError shouldn't have been set!"); | |
| 117 NS_ASSERTION(mResult == JSVAL_VOID, "mResult shouldn't have been set!"); | |
| 118 | |
| 119 mDone = true; | |
| 120 mError = new DOMError(GetOwner(), aError); | |
| 121 | |
| 122 FireEvent(NS_LITERAL_STRING("error"), true, true); | |
| 123 } | |
| 124 | |
| 125 void | |
| 126 DOMRequest::FireError(nsresult aError) | |
| 127 { | |
| 128 NS_ASSERTION(!mDone, "mDone shouldn't have been set to true already!"); | |
| 129 NS_ASSERTION(!mError, "mError shouldn't have been set!"); | |
| 130 NS_ASSERTION(mResult == JSVAL_VOID, "mResult shouldn't have been set!"); | |
| 131 | |
| 132 mDone = true; | |
| 133 mError = new DOMError(GetOwner(), aError); | |
| 134 | |
| 135 FireEvent(NS_LITERAL_STRING("error"), true, true); | |
| 136 } | |
| 137 | |
| 138 void | |
| 139 DOMRequest::FireDetailedError(nsISupports* aError) | |
| 140 { | |
| 141 NS_ASSERTION(!mDone, "mDone shouldn't have been set to true already!"); | |
| 142 NS_ASSERTION(!mError, "mError shouldn't have been set!"); | |
| 143 NS_ASSERTION(mResult == JSVAL_VOID, "mResult shouldn't have been set!"); | |
| 144 NS_ASSERTION(aError, "No detailed error provided"); | |
| 145 | |
| 146 mDone = true; | |
| 147 mError = aError; | |
| 148 | |
| 149 FireEvent(NS_LITERAL_STRING("error"), true, true); | |
| 150 } | |
| 151 | |
| 152 void | |
| 153 DOMRequest::FireEvent(const nsAString& aType, bool aBubble, bool aCancelable) | |
| 154 { | |
| 155 if (NS_FAILED(CheckInnerWindowCorrectness())) { | |
| 156 return; | |
| 157 } | |
| 158 | |
| 159 nsCOMPtr<nsIDOMEvent> event; | |
| 160 NS_NewDOMEvent(getter_AddRefs(event), this, nullptr, nullptr); | |
| 161 nsresult rv = event->InitEvent(aType, aBubble, aCancelable); | |
| 162 if (NS_FAILED(rv)) { | |
| 163 return; | |
| 164 } | |
| 165 | |
| 166 event->SetTrusted(true); | |
| 167 | |
| 168 bool dummy; | |
| 169 DispatchEvent(event, &dummy); | |
| 170 } | |
| 171 | |
| 172 void | |
| 173 DOMRequest::RootResultVal() | |
| 174 { | |
| 175 mozilla::HoldJSObjects(this); | |
| 176 } | |
| 177 | |
| 178 NS_IMPL_ISUPPORTS(DOMRequestService, nsIDOMRequestService) | |
| 179 | |
| 180 NS_IMETHODIMP | |
| 181 DOMRequestService::CreateRequest(nsIDOMWindow* aWindow, | |
| 182 nsIDOMDOMRequest** aRequest) | |
| 183 { | |
| 184 nsCOMPtr<nsPIDOMWindow> win(do_QueryInterface(aWindow)); | |
| 185 NS_ENSURE_STATE(win); | |
| 186 NS_ADDREF(*aRequest = new DOMRequest(win)); | |
| 187 | |
| 188 return NS_OK; | |
| 189 } | |
| 190 | |
| 191 NS_IMETHODIMP | |
| 192 DOMRequestService::CreateCursor(nsIDOMWindow* aWindow, | |
| 193 nsICursorContinueCallback* aCallback, | |
| 194 nsIDOMDOMCursor** aCursor) | |
| 195 { | |
| 196 nsCOMPtr<nsPIDOMWindow> win(do_QueryInterface(aWindow)); | |
| 197 NS_ENSURE_STATE(win); | |
| 198 NS_ADDREF(*aCursor = new DOMCursor(win, aCallback)); | |
| 199 | |
| 200 return NS_OK; | |
| 201 } | |
| 202 | |
| 203 NS_IMETHODIMP | |
| 204 DOMRequestService::FireSuccess(nsIDOMDOMRequest* aRequest, | |
| 205 JS::Handle<JS::Value> aResult) | |
| 206 { | |
| 207 NS_ENSURE_STATE(aRequest); | |
| 208 static_cast<DOMRequest*>(aRequest)->FireSuccess(aResult); | |
| 209 | |
| 210 return NS_OK; | |
| 211 } | |
| 212 | |
| 213 NS_IMETHODIMP | |
| 214 DOMRequestService::FireError(nsIDOMDOMRequest* aRequest, | |
| 215 const nsAString& aError) | |
| 216 { | |
| 217 NS_ENSURE_STATE(aRequest); | |
| 218 static_cast<DOMRequest*>(aRequest)->FireError(aError); | |
| 219 | |
| 220 return NS_OK; | |
| 221 } | |
| 222 | |
| 223 NS_IMETHODIMP | |
| 224 DOMRequestService::FireDetailedError(nsIDOMDOMRequest* aRequest, | |
| 225 nsISupports* aError) | |
| 226 { | |
| 227 NS_ENSURE_STATE(aRequest); | |
| 228 static_cast<DOMRequest*>(aRequest)->FireDetailedError(aError); | |
| 229 | |
| 230 return NS_OK; | |
| 231 } | |
| 232 | |
| 233 class FireSuccessAsyncTask : public nsRunnable | |
| 234 { | |
| 235 | |
| 236 FireSuccessAsyncTask(JSContext* aCx, | |
| 237 DOMRequest* aRequest, | |
| 238 const JS::Value& aResult) : | |
| 239 mReq(aRequest), | |
| 240 mResult(aCx, aResult) | |
| 241 { | |
| 242 } | |
| 243 | |
| 244 public: | |
| 245 | |
| 246 // Due to the fact that initialization can fail during shutdown (since we | |
| 247 // can't fetch a js context), set up an initiatization function to make sure | |
| 248 // we can return the failure appropriately | |
| 249 static nsresult | |
| 250 Dispatch(DOMRequest* aRequest, | |
| 251 const JS::Value& aResult) | |
| 252 { | |
| 253 NS_ASSERTION(NS_IsMainThread(), "Wrong thread!"); | |
| 254 AutoSafeJSContext cx; | |
| 255 nsRefPtr<FireSuccessAsyncTask> asyncTask = new FireSuccessAsyncTask(cx, aRequest, aResult); | |
| 256 if (NS_FAILED(NS_DispatchToMainThread(asyncTask))) { | |
| 257 NS_WARNING("Failed to dispatch to main thread!"); | |
| 258 return NS_ERROR_FAILURE; | |
| 259 } | |
| 260 return NS_OK; | |
| 261 } | |
| 262 | |
| 263 NS_IMETHODIMP | |
| 264 Run() | |
| 265 { | |
| 266 mReq->FireSuccess(JS::Handle<JS::Value>::fromMarkedLocation(mResult.address())); | |
| 267 return NS_OK; | |
| 268 } | |
| 269 | |
| 270 ~FireSuccessAsyncTask() | |
| 271 { | |
| 272 NS_ASSERTION(NS_IsMainThread(), "Wrong thread!"); | |
| 273 } | |
| 274 | |
| 275 private: | |
| 276 nsRefPtr<DOMRequest> mReq; | |
| 277 JS::PersistentRooted<JS::Value> mResult; | |
| 278 }; | |
| 279 | |
| 280 class FireErrorAsyncTask : public nsRunnable | |
| 281 { | |
| 282 public: | |
| 283 FireErrorAsyncTask(DOMRequest* aRequest, | |
| 284 const nsAString& aError) : | |
| 285 mReq(aRequest), | |
| 286 mError(aError) | |
| 287 { | |
| 288 } | |
| 289 | |
| 290 NS_IMETHODIMP | |
| 291 Run() | |
| 292 { | |
| 293 mReq->FireError(mError); | |
| 294 return NS_OK; | |
| 295 } | |
| 296 private: | |
| 297 nsRefPtr<DOMRequest> mReq; | |
| 298 nsString mError; | |
| 299 }; | |
| 300 | |
| 301 NS_IMETHODIMP | |
| 302 DOMRequestService::FireSuccessAsync(nsIDOMDOMRequest* aRequest, | |
| 303 JS::Handle<JS::Value> aResult) | |
| 304 { | |
| 305 NS_ENSURE_STATE(aRequest); | |
| 306 return FireSuccessAsyncTask::Dispatch(static_cast<DOMRequest*>(aRequest), aResult); | |
| 307 } | |
| 308 | |
| 309 NS_IMETHODIMP | |
| 310 DOMRequestService::FireErrorAsync(nsIDOMDOMRequest* aRequest, | |
| 311 const nsAString& aError) | |
| 312 { | |
| 313 NS_ENSURE_STATE(aRequest); | |
| 314 nsCOMPtr<nsIRunnable> asyncTask = | |
| 315 new FireErrorAsyncTask(static_cast<DOMRequest*>(aRequest), aError); | |
| 316 if (NS_FAILED(NS_DispatchToMainThread(asyncTask))) { | |
| 317 NS_WARNING("Failed to dispatch to main thread!"); | |
| 318 return NS_ERROR_FAILURE; | |
| 319 } | |
| 320 return NS_OK; | |
| 321 } | |
| 322 | |
| 323 NS_IMETHODIMP | |
| 324 DOMRequestService::FireDone(nsIDOMDOMCursor* aCursor) { | |
| 325 NS_ENSURE_STATE(aCursor); | |
| 326 static_cast<DOMCursor*>(aCursor)->FireDone(); | |
| 327 | |
| 328 return NS_OK; | |
| 329 } |
