michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "EventListenerService.h"
michael@0: #ifdef MOZ_JSDEBUGGER
michael@0: #include "jsdIDebuggerService.h"
michael@0: #endif
michael@0: #include "mozilla/BasicEvents.h"
michael@0: #include "mozilla/EventDispatcher.h"
michael@0: #include "mozilla/EventListenerManager.h"
michael@0: #include "mozilla/JSEventHandler.h"
michael@0: #include "mozilla/Maybe.h"
michael@0: #include "nsCOMArray.h"
michael@0: #include "nsCxPusher.h"
michael@0: #include "nsDOMClassInfoID.h"
michael@0: #include "nsIXPConnect.h"
michael@0: #include "nsJSUtils.h"
michael@0: #include "nsMemory.h"
michael@0: #include "nsServiceManagerUtils.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: 
michael@0: using namespace dom;
michael@0: 
michael@0: /******************************************************************************
michael@0:  * mozilla::EventListenerInfo
michael@0:  ******************************************************************************/
michael@0: 
michael@0: NS_IMPL_CYCLE_COLLECTION(EventListenerInfo, mListener)
michael@0: 
michael@0: NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(EventListenerInfo)
michael@0:   NS_INTERFACE_MAP_ENTRY(nsIEventListenerInfo)
michael@0:   NS_INTERFACE_MAP_ENTRY(nsISupports)
michael@0: NS_INTERFACE_MAP_END
michael@0: 
michael@0: NS_IMPL_CYCLE_COLLECTING_ADDREF(EventListenerInfo)
michael@0: NS_IMPL_CYCLE_COLLECTING_RELEASE(EventListenerInfo)
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: EventListenerInfo::GetType(nsAString& aType)
michael@0: {
michael@0:   aType = mType;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: EventListenerInfo::GetCapturing(bool* aCapturing)
michael@0: {
michael@0:   *aCapturing = mCapturing;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: EventListenerInfo::GetAllowsUntrusted(bool* aAllowsUntrusted)
michael@0: {
michael@0:   *aAllowsUntrusted = mAllowsUntrusted;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: EventListenerInfo::GetInSystemEventGroup(bool* aInSystemEventGroup)
michael@0: {
michael@0:   *aInSystemEventGroup = mInSystemEventGroup;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: EventListenerInfo::GetListenerObject(JSContext* aCx,
michael@0:                                      JS::MutableHandle<JS::Value> aObject)
michael@0: {
michael@0:   Maybe<JSAutoCompartment> ac;
michael@0:   GetJSVal(aCx, ac, aObject);
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: /******************************************************************************
michael@0:  * mozilla::EventListenerService
michael@0:  ******************************************************************************/
michael@0: 
michael@0: NS_IMPL_ISUPPORTS(EventListenerService, nsIEventListenerService)
michael@0: 
michael@0: bool
michael@0: EventListenerInfo::GetJSVal(JSContext* aCx,
michael@0:                             Maybe<JSAutoCompartment>& aAc,
michael@0:                             JS::MutableHandle<JS::Value> aJSVal)
michael@0: {
michael@0:   aJSVal.setNull();
michael@0:   nsCOMPtr<nsIXPConnectWrappedJS> wrappedJS = do_QueryInterface(mListener);
michael@0:   if (wrappedJS) {
michael@0:     JS::Rooted<JSObject*> object(aCx, wrappedJS->GetJSObject());
michael@0:     if (!object) {
michael@0:       return false;
michael@0:     }
michael@0:     aAc.construct(aCx, object);
michael@0:     aJSVal.setObject(*object);
michael@0:     return true;
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<JSEventHandler> jsHandler = do_QueryInterface(mListener);
michael@0:   if (jsHandler && jsHandler->GetTypedEventHandler().HasEventHandler()) {
michael@0:     JS::Handle<JSObject*> handler =
michael@0:       jsHandler->GetTypedEventHandler().Ptr()->Callable();
michael@0:     if (handler) {
michael@0:       aAc.construct(aCx, handler);
michael@0:       aJSVal.setObject(*handler);
michael@0:       return true;
michael@0:     }
michael@0:   }
michael@0:   return false;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: EventListenerInfo::ToSource(nsAString& aResult)
michael@0: {
michael@0:   aResult.SetIsVoid(true);
michael@0: 
michael@0:   AutoSafeJSContext cx;
michael@0:   Maybe<JSAutoCompartment> ac;
michael@0:   JS::Rooted<JS::Value> v(cx);
michael@0:   if (GetJSVal(cx, ac, &v)) {
michael@0:     JSString* str = JS_ValueToSource(cx, v);
michael@0:     if (str) {
michael@0:       nsDependentJSString depStr;
michael@0:       if (depStr.init(cx, str)) {
michael@0:         aResult.Assign(depStr);
michael@0:       }
michael@0:     }
michael@0:   }
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: EventListenerInfo::GetDebugObject(nsISupports** aRetVal)
michael@0: {
michael@0:   *aRetVal = nullptr;
michael@0: 
michael@0: #ifdef MOZ_JSDEBUGGER
michael@0:   nsresult rv = NS_OK;
michael@0:   nsCOMPtr<jsdIDebuggerService> jsd =
michael@0:     do_GetService("@mozilla.org/js/jsd/debugger-service;1", &rv);
michael@0:   NS_ENSURE_SUCCESS(rv, NS_OK);
michael@0: 
michael@0:   bool isOn = false;
michael@0:   jsd->GetIsOn(&isOn);
michael@0:   NS_ENSURE_TRUE(isOn, NS_OK);
michael@0: 
michael@0:   AutoSafeJSContext cx;
michael@0:   Maybe<JSAutoCompartment> ac;
michael@0:   JS::Rooted<JS::Value> v(cx);
michael@0:   if (GetJSVal(cx, ac, &v)) {
michael@0:     nsCOMPtr<jsdIValue> jsdValue;
michael@0:     rv = jsd->WrapValue(v, getter_AddRefs(jsdValue));
michael@0:     NS_ENSURE_SUCCESS(rv, rv);
michael@0:     jsdValue.forget(aRetVal);
michael@0:   }
michael@0: #endif
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: EventListenerService::GetListenerInfoFor(nsIDOMEventTarget* aEventTarget,
michael@0:                                          uint32_t* aCount,
michael@0:                                          nsIEventListenerInfo*** aOutArray)
michael@0: {
michael@0:   NS_ENSURE_ARG_POINTER(aEventTarget);
michael@0:   *aCount = 0;
michael@0:   *aOutArray = nullptr;
michael@0:   nsCOMArray<nsIEventListenerInfo> listenerInfos;
michael@0: 
michael@0:   nsCOMPtr<EventTarget> eventTarget = do_QueryInterface(aEventTarget);
michael@0:   NS_ENSURE_TRUE(eventTarget, NS_ERROR_NO_INTERFACE);
michael@0: 
michael@0:   EventListenerManager* elm = eventTarget->GetExistingListenerManager();
michael@0:   if (elm) {
michael@0:     elm->GetListenerInfo(&listenerInfos);
michael@0:   }
michael@0: 
michael@0:   int32_t count = listenerInfos.Count();
michael@0:   if (count == 0) {
michael@0:     return NS_OK;
michael@0:   }
michael@0: 
michael@0:   *aOutArray =
michael@0:     static_cast<nsIEventListenerInfo**>(
michael@0:       nsMemory::Alloc(sizeof(nsIEventListenerInfo*) * count));
michael@0:   NS_ENSURE_TRUE(*aOutArray, NS_ERROR_OUT_OF_MEMORY);
michael@0: 
michael@0:   for (int32_t i = 0; i < count; ++i) {
michael@0:     NS_ADDREF((*aOutArray)[i] = listenerInfos[i]);
michael@0:   }
michael@0:   *aCount = count;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: EventListenerService::GetEventTargetChainFor(nsIDOMEventTarget* aEventTarget,
michael@0:                                              uint32_t* aCount,
michael@0:                                              nsIDOMEventTarget*** aOutArray)
michael@0: {
michael@0:   *aCount = 0;
michael@0:   *aOutArray = nullptr;
michael@0:   NS_ENSURE_ARG(aEventTarget);
michael@0:   WidgetEvent event(true, NS_EVENT_NULL);
michael@0:   nsCOMArray<EventTarget> targets;
michael@0:   nsresult rv = EventDispatcher::Dispatch(aEventTarget, nullptr, &event,
michael@0:                                           nullptr, nullptr, nullptr, &targets);
michael@0:   NS_ENSURE_SUCCESS(rv, rv);
michael@0:   int32_t count = targets.Count();
michael@0:   if (count == 0) {
michael@0:     return NS_OK;
michael@0:   }
michael@0: 
michael@0:   *aOutArray =
michael@0:     static_cast<nsIDOMEventTarget**>(
michael@0:       nsMemory::Alloc(sizeof(nsIDOMEventTarget*) * count));
michael@0:   NS_ENSURE_TRUE(*aOutArray, NS_ERROR_OUT_OF_MEMORY);
michael@0: 
michael@0:   for (int32_t i = 0; i < count; ++i) {
michael@0:     NS_ADDREF((*aOutArray)[i] = targets[i]);
michael@0:   }
michael@0:   *aCount = count;
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: EventListenerService::HasListenersFor(nsIDOMEventTarget* aEventTarget,
michael@0:                                       const nsAString& aType,
michael@0:                                       bool* aRetVal)
michael@0: {
michael@0:   nsCOMPtr<EventTarget> eventTarget = do_QueryInterface(aEventTarget);
michael@0:   NS_ENSURE_TRUE(eventTarget, NS_ERROR_NO_INTERFACE);
michael@0: 
michael@0:   EventListenerManager* elm = eventTarget->GetExistingListenerManager();
michael@0:   *aRetVal = elm && elm->HasListenersFor(aType);
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: EventListenerService::AddSystemEventListener(nsIDOMEventTarget *aTarget,
michael@0:                                              const nsAString& aType,
michael@0:                                              nsIDOMEventListener* aListener,
michael@0:                                              bool aUseCapture)
michael@0: {
michael@0:   NS_PRECONDITION(aTarget, "Missing target");
michael@0:   NS_PRECONDITION(aListener, "Missing listener");
michael@0: 
michael@0:   nsCOMPtr<EventTarget> eventTarget = do_QueryInterface(aTarget);
michael@0:   NS_ENSURE_TRUE(eventTarget, NS_ERROR_NO_INTERFACE);
michael@0: 
michael@0:   EventListenerManager* manager = eventTarget->GetOrCreateListenerManager();
michael@0:   NS_ENSURE_STATE(manager);
michael@0: 
michael@0:   EventListenerFlags flags =
michael@0:     aUseCapture ? TrustedEventsAtSystemGroupCapture() :
michael@0:                   TrustedEventsAtSystemGroupBubble();
michael@0:   manager->AddEventListenerByType(aListener, aType, flags);
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: EventListenerService::RemoveSystemEventListener(nsIDOMEventTarget *aTarget,
michael@0:                                                 const nsAString& aType,
michael@0:                                                 nsIDOMEventListener* aListener,
michael@0:                                                 bool aUseCapture)
michael@0: {
michael@0:   NS_PRECONDITION(aTarget, "Missing target");
michael@0:   NS_PRECONDITION(aListener, "Missing listener");
michael@0: 
michael@0:   nsCOMPtr<EventTarget> eventTarget = do_QueryInterface(aTarget);
michael@0:   NS_ENSURE_TRUE(eventTarget, NS_ERROR_NO_INTERFACE);
michael@0: 
michael@0:   EventListenerManager* manager = eventTarget->GetExistingListenerManager();
michael@0:   if (manager) {
michael@0:     EventListenerFlags flags =
michael@0:       aUseCapture ? TrustedEventsAtSystemGroupCapture() :
michael@0:                     TrustedEventsAtSystemGroupBubble();
michael@0:     manager->RemoveEventListenerByType(aListener, aType, flags);
michael@0:   }
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: EventListenerService::AddListenerForAllEvents(nsIDOMEventTarget* aTarget,
michael@0:                                               nsIDOMEventListener* aListener,
michael@0:                                               bool aUseCapture,
michael@0:                                               bool aWantsUntrusted,
michael@0:                                               bool aSystemEventGroup)
michael@0: {
michael@0:   NS_ENSURE_STATE(aTarget && aListener);
michael@0: 
michael@0:   nsCOMPtr<EventTarget> eventTarget = do_QueryInterface(aTarget);
michael@0:   NS_ENSURE_TRUE(eventTarget, NS_ERROR_NO_INTERFACE);
michael@0: 
michael@0:   EventListenerManager* manager = eventTarget->GetOrCreateListenerManager();
michael@0:   NS_ENSURE_STATE(manager);
michael@0:   manager->AddListenerForAllEvents(aListener, aUseCapture, aWantsUntrusted,
michael@0:                                aSystemEventGroup);
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: EventListenerService::RemoveListenerForAllEvents(nsIDOMEventTarget* aTarget,
michael@0:                                                  nsIDOMEventListener* aListener,
michael@0:                                                  bool aUseCapture,
michael@0:                                                  bool aSystemEventGroup)
michael@0: {
michael@0:   NS_ENSURE_STATE(aTarget && aListener);
michael@0: 
michael@0:   nsCOMPtr<EventTarget> eventTarget = do_QueryInterface(aTarget);
michael@0:   NS_ENSURE_TRUE(eventTarget, NS_ERROR_NO_INTERFACE);
michael@0: 
michael@0:   EventListenerManager* manager = eventTarget->GetExistingListenerManager();
michael@0:   if (manager) {
michael@0:     manager->RemoveListenerForAllEvents(aListener, aUseCapture, aSystemEventGroup);
michael@0:   }
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: } // namespace mozilla
michael@0: 
michael@0: nsresult
michael@0: NS_NewEventListenerService(nsIEventListenerService** aResult)
michael@0: {
michael@0:   *aResult = new mozilla::EventListenerService();
michael@0:   NS_ADDREF(*aResult);
michael@0:   return NS_OK;
michael@0: }