The Tor Browser / file comparison
comparison: dom/events/EventListenerService.cpp
dom/events/EventListenerService.cpp
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:0f9a45947a9d |
|---|---|
| 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 "EventListenerService.h" | |
| 7 #ifdef MOZ_JSDEBUGGER | |
| 8 #include "jsdIDebuggerService.h" | |
| 9 #endif | |
| 10 #include "mozilla/BasicEvents.h" | |
| 11 #include "mozilla/EventDispatcher.h" | |
| 12 #include "mozilla/EventListenerManager.h" | |
| 13 #include "mozilla/JSEventHandler.h" | |
| 14 #include "mozilla/Maybe.h" | |
| 15 #include "nsCOMArray.h" | |
| 16 #include "nsCxPusher.h" | |
| 17 #include "nsDOMClassInfoID.h" | |
| 18 #include "nsIXPConnect.h" | |
| 19 #include "nsJSUtils.h" | |
| 20 #include "nsMemory.h" | |
| 21 #include "nsServiceManagerUtils.h" | |
| 22 | |
| 23 namespace mozilla { | |
| 24 | |
| 25 using namespace dom; | |
| 26 | |
| 27 /****************************************************************************** | |
| 28 * mozilla::EventListenerInfo | |
| 29 ******************************************************************************/ | |
| 30 | |
| 31 NS_IMPL_CYCLE_COLLECTION(EventListenerInfo, mListener) | |
| 32 | |
| 33 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(EventListenerInfo) | |
| 34 NS_INTERFACE_MAP_ENTRY(nsIEventListenerInfo) | |
| 35 NS_INTERFACE_MAP_ENTRY(nsISupports) | |
| 36 NS_INTERFACE_MAP_END | |
| 37 | |
| 38 NS_IMPL_CYCLE_COLLECTING_ADDREF(EventListenerInfo) | |
| 39 NS_IMPL_CYCLE_COLLECTING_RELEASE(EventListenerInfo) | |
| 40 | |
| 41 NS_IMETHODIMP | |
| 42 EventListenerInfo::GetType(nsAString& aType) | |
| 43 { | |
| 44 aType = mType; | |
| 45 return NS_OK; | |
| 46 } | |
| 47 | |
| 48 NS_IMETHODIMP | |
| 49 EventListenerInfo::GetCapturing(bool* aCapturing) | |
| 50 { | |
| 51 *aCapturing = mCapturing; | |
| 52 return NS_OK; | |
| 53 } | |
| 54 | |
| 55 NS_IMETHODIMP | |
| 56 EventListenerInfo::GetAllowsUntrusted(bool* aAllowsUntrusted) | |
| 57 { | |
| 58 *aAllowsUntrusted = mAllowsUntrusted; | |
| 59 return NS_OK; | |
| 60 } | |
| 61 | |
| 62 NS_IMETHODIMP | |
| 63 EventListenerInfo::GetInSystemEventGroup(bool* aInSystemEventGroup) | |
| 64 { | |
| 65 *aInSystemEventGroup = mInSystemEventGroup; | |
| 66 return NS_OK; | |
| 67 } | |
| 68 | |
| 69 NS_IMETHODIMP | |
| 70 EventListenerInfo::GetListenerObject(JSContext* aCx, | |
| 71 JS::MutableHandle<JS::Value> aObject) | |
| 72 { | |
| 73 Maybe<JSAutoCompartment> ac; | |
| 74 GetJSVal(aCx, ac, aObject); | |
| 75 return NS_OK; | |
| 76 } | |
| 77 | |
| 78 /****************************************************************************** | |
| 79 * mozilla::EventListenerService | |
| 80 ******************************************************************************/ | |
| 81 | |
| 82 NS_IMPL_ISUPPORTS(EventListenerService, nsIEventListenerService) | |
| 83 | |
| 84 bool | |
| 85 EventListenerInfo::GetJSVal(JSContext* aCx, | |
| 86 Maybe<JSAutoCompartment>& aAc, | |
| 87 JS::MutableHandle<JS::Value> aJSVal) | |
| 88 { | |
| 89 aJSVal.setNull(); | |
| 90 nsCOMPtr<nsIXPConnectWrappedJS> wrappedJS = do_QueryInterface(mListener); | |
| 91 if (wrappedJS) { | |
| 92 JS::Rooted<JSObject*> object(aCx, wrappedJS->GetJSObject()); | |
| 93 if (!object) { | |
| 94 return false; | |
| 95 } | |
| 96 aAc.construct(aCx, object); | |
| 97 aJSVal.setObject(*object); | |
| 98 return true; | |
| 99 } | |
| 100 | |
| 101 nsCOMPtr<JSEventHandler> jsHandler = do_QueryInterface(mListener); | |
| 102 if (jsHandler && jsHandler->GetTypedEventHandler().HasEventHandler()) { | |
| 103 JS::Handle<JSObject*> handler = | |
| 104 jsHandler->GetTypedEventHandler().Ptr()->Callable(); | |
| 105 if (handler) { | |
| 106 aAc.construct(aCx, handler); | |
| 107 aJSVal.setObject(*handler); | |
| 108 return true; | |
| 109 } | |
| 110 } | |
| 111 return false; | |
| 112 } | |
| 113 | |
| 114 NS_IMETHODIMP | |
| 115 EventListenerInfo::ToSource(nsAString& aResult) | |
| 116 { | |
| 117 aResult.SetIsVoid(true); | |
| 118 | |
| 119 AutoSafeJSContext cx; | |
| 120 Maybe<JSAutoCompartment> ac; | |
| 121 JS::Rooted<JS::Value> v(cx); | |
| 122 if (GetJSVal(cx, ac, &v)) { | |
| 123 JSString* str = JS_ValueToSource(cx, v); | |
| 124 if (str) { | |
| 125 nsDependentJSString depStr; | |
| 126 if (depStr.init(cx, str)) { | |
| 127 aResult.Assign(depStr); | |
| 128 } | |
| 129 } | |
| 130 } | |
| 131 return NS_OK; | |
| 132 } | |
| 133 | |
| 134 NS_IMETHODIMP | |
| 135 EventListenerInfo::GetDebugObject(nsISupports** aRetVal) | |
| 136 { | |
| 137 *aRetVal = nullptr; | |
| 138 | |
| 139 #ifdef MOZ_JSDEBUGGER | |
| 140 nsresult rv = NS_OK; | |
| 141 nsCOMPtr<jsdIDebuggerService> jsd = | |
| 142 do_GetService("@mozilla.org/js/jsd/debugger-service;1", &rv); | |
| 143 NS_ENSURE_SUCCESS(rv, NS_OK); | |
| 144 | |
| 145 bool isOn = false; | |
| 146 jsd->GetIsOn(&isOn); | |
| 147 NS_ENSURE_TRUE(isOn, NS_OK); | |
| 148 | |
| 149 AutoSafeJSContext cx; | |
| 150 Maybe<JSAutoCompartment> ac; | |
| 151 JS::Rooted<JS::Value> v(cx); | |
| 152 if (GetJSVal(cx, ac, &v)) { | |
| 153 nsCOMPtr<jsdIValue> jsdValue; | |
| 154 rv = jsd->WrapValue(v, getter_AddRefs(jsdValue)); | |
| 155 NS_ENSURE_SUCCESS(rv, rv); | |
| 156 jsdValue.forget(aRetVal); | |
| 157 } | |
| 158 #endif | |
| 159 | |
| 160 return NS_OK; | |
| 161 } | |
| 162 | |
| 163 NS_IMETHODIMP | |
| 164 EventListenerService::GetListenerInfoFor(nsIDOMEventTarget* aEventTarget, | |
| 165 uint32_t* aCount, | |
| 166 nsIEventListenerInfo*** aOutArray) | |
| 167 { | |
| 168 NS_ENSURE_ARG_POINTER(aEventTarget); | |
| 169 *aCount = 0; | |
| 170 *aOutArray = nullptr; | |
| 171 nsCOMArray<nsIEventListenerInfo> listenerInfos; | |
| 172 | |
| 173 nsCOMPtr<EventTarget> eventTarget = do_QueryInterface(aEventTarget); | |
| 174 NS_ENSURE_TRUE(eventTarget, NS_ERROR_NO_INTERFACE); | |
| 175 | |
| 176 EventListenerManager* elm = eventTarget->GetExistingListenerManager(); | |
| 177 if (elm) { | |
| 178 elm->GetListenerInfo(&listenerInfos); | |
| 179 } | |
| 180 | |
| 181 int32_t count = listenerInfos.Count(); | |
| 182 if (count == 0) { | |
| 183 return NS_OK; | |
| 184 } | |
| 185 | |
| 186 *aOutArray = | |
| 187 static_cast<nsIEventListenerInfo**>( | |
| 188 nsMemory::Alloc(sizeof(nsIEventListenerInfo*) * count)); | |
| 189 NS_ENSURE_TRUE(*aOutArray, NS_ERROR_OUT_OF_MEMORY); | |
| 190 | |
| 191 for (int32_t i = 0; i < count; ++i) { | |
| 192 NS_ADDREF((*aOutArray)[i] = listenerInfos[i]); | |
| 193 } | |
| 194 *aCount = count; | |
| 195 return NS_OK; | |
| 196 } | |
| 197 | |
| 198 NS_IMETHODIMP | |
| 199 EventListenerService::GetEventTargetChainFor(nsIDOMEventTarget* aEventTarget, | |
| 200 uint32_t* aCount, | |
| 201 nsIDOMEventTarget*** aOutArray) | |
| 202 { | |
| 203 *aCount = 0; | |
| 204 *aOutArray = nullptr; | |
| 205 NS_ENSURE_ARG(aEventTarget); | |
| 206 WidgetEvent event(true, NS_EVENT_NULL); | |
| 207 nsCOMArray<EventTarget> targets; | |
| 208 nsresult rv = EventDispatcher::Dispatch(aEventTarget, nullptr, &event, | |
| 209 nullptr, nullptr, nullptr, &targets); | |
| 210 NS_ENSURE_SUCCESS(rv, rv); | |
| 211 int32_t count = targets.Count(); | |
| 212 if (count == 0) { | |
| 213 return NS_OK; | |
| 214 } | |
| 215 | |
| 216 *aOutArray = | |
| 217 static_cast<nsIDOMEventTarget**>( | |
| 218 nsMemory::Alloc(sizeof(nsIDOMEventTarget*) * count)); | |
| 219 NS_ENSURE_TRUE(*aOutArray, NS_ERROR_OUT_OF_MEMORY); | |
| 220 | |
| 221 for (int32_t i = 0; i < count; ++i) { | |
| 222 NS_ADDREF((*aOutArray)[i] = targets[i]); | |
| 223 } | |
| 224 *aCount = count; | |
| 225 | |
| 226 return NS_OK; | |
| 227 } | |
| 228 | |
| 229 NS_IMETHODIMP | |
| 230 EventListenerService::HasListenersFor(nsIDOMEventTarget* aEventTarget, | |
| 231 const nsAString& aType, | |
| 232 bool* aRetVal) | |
| 233 { | |
| 234 nsCOMPtr<EventTarget> eventTarget = do_QueryInterface(aEventTarget); | |
| 235 NS_ENSURE_TRUE(eventTarget, NS_ERROR_NO_INTERFACE); | |
| 236 | |
| 237 EventListenerManager* elm = eventTarget->GetExistingListenerManager(); | |
| 238 *aRetVal = elm && elm->HasListenersFor(aType); | |
| 239 return NS_OK; | |
| 240 } | |
| 241 | |
| 242 NS_IMETHODIMP | |
| 243 EventListenerService::AddSystemEventListener(nsIDOMEventTarget *aTarget, | |
| 244 const nsAString& aType, | |
| 245 nsIDOMEventListener* aListener, | |
| 246 bool aUseCapture) | |
| 247 { | |
| 248 NS_PRECONDITION(aTarget, "Missing target"); | |
| 249 NS_PRECONDITION(aListener, "Missing listener"); | |
| 250 | |
| 251 nsCOMPtr<EventTarget> eventTarget = do_QueryInterface(aTarget); | |
| 252 NS_ENSURE_TRUE(eventTarget, NS_ERROR_NO_INTERFACE); | |
| 253 | |
| 254 EventListenerManager* manager = eventTarget->GetOrCreateListenerManager(); | |
| 255 NS_ENSURE_STATE(manager); | |
| 256 | |
| 257 EventListenerFlags flags = | |
| 258 aUseCapture ? TrustedEventsAtSystemGroupCapture() : | |
| 259 TrustedEventsAtSystemGroupBubble(); | |
| 260 manager->AddEventListenerByType(aListener, aType, flags); | |
| 261 return NS_OK; | |
| 262 } | |
| 263 | |
| 264 NS_IMETHODIMP | |
| 265 EventListenerService::RemoveSystemEventListener(nsIDOMEventTarget *aTarget, | |
| 266 const nsAString& aType, | |
| 267 nsIDOMEventListener* aListener, | |
| 268 bool aUseCapture) | |
| 269 { | |
| 270 NS_PRECONDITION(aTarget, "Missing target"); | |
| 271 NS_PRECONDITION(aListener, "Missing listener"); | |
| 272 | |
| 273 nsCOMPtr<EventTarget> eventTarget = do_QueryInterface(aTarget); | |
| 274 NS_ENSURE_TRUE(eventTarget, NS_ERROR_NO_INTERFACE); | |
| 275 | |
| 276 EventListenerManager* manager = eventTarget->GetExistingListenerManager(); | |
| 277 if (manager) { | |
| 278 EventListenerFlags flags = | |
| 279 aUseCapture ? TrustedEventsAtSystemGroupCapture() : | |
| 280 TrustedEventsAtSystemGroupBubble(); | |
| 281 manager->RemoveEventListenerByType(aListener, aType, flags); | |
| 282 } | |
| 283 | |
| 284 return NS_OK; | |
| 285 } | |
| 286 | |
| 287 NS_IMETHODIMP | |
| 288 EventListenerService::AddListenerForAllEvents(nsIDOMEventTarget* aTarget, | |
| 289 nsIDOMEventListener* aListener, | |
| 290 bool aUseCapture, | |
| 291 bool aWantsUntrusted, | |
| 292 bool aSystemEventGroup) | |
| 293 { | |
| 294 NS_ENSURE_STATE(aTarget && aListener); | |
| 295 | |
| 296 nsCOMPtr<EventTarget> eventTarget = do_QueryInterface(aTarget); | |
| 297 NS_ENSURE_TRUE(eventTarget, NS_ERROR_NO_INTERFACE); | |
| 298 | |
| 299 EventListenerManager* manager = eventTarget->GetOrCreateListenerManager(); | |
| 300 NS_ENSURE_STATE(manager); | |
| 301 manager->AddListenerForAllEvents(aListener, aUseCapture, aWantsUntrusted, | |
| 302 aSystemEventGroup); | |
| 303 return NS_OK; | |
| 304 } | |
| 305 | |
| 306 NS_IMETHODIMP | |
| 307 EventListenerService::RemoveListenerForAllEvents(nsIDOMEventTarget* aTarget, | |
| 308 nsIDOMEventListener* aListener, | |
| 309 bool aUseCapture, | |
| 310 bool aSystemEventGroup) | |
| 311 { | |
| 312 NS_ENSURE_STATE(aTarget && aListener); | |
| 313 | |
| 314 nsCOMPtr<EventTarget> eventTarget = do_QueryInterface(aTarget); | |
| 315 NS_ENSURE_TRUE(eventTarget, NS_ERROR_NO_INTERFACE); | |
| 316 | |
| 317 EventListenerManager* manager = eventTarget->GetExistingListenerManager(); | |
| 318 if (manager) { | |
| 319 manager->RemoveListenerForAllEvents(aListener, aUseCapture, aSystemEventGroup); | |
| 320 } | |
| 321 return NS_OK; | |
| 322 } | |
| 323 | |
| 324 } // namespace mozilla | |
| 325 | |
| 326 nsresult | |
| 327 NS_NewEventListenerService(nsIEventListenerService** aResult) | |
| 328 { | |
| 329 *aResult = new mozilla::EventListenerService(); | |
| 330 NS_ADDREF(*aResult); | |
| 331 return NS_OK; | |
| 332 } |
