mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
325 lines
9.6 KiB
C++
325 lines
9.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsEventListenerService.h"
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#include "nsCOMArray.h"
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#include "nsEventListenerManager.h"
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#include "nsMemory.h"
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#include "nsCxPusher.h"
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#include "nsIXPConnect.h"
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#include "nsJSUtils.h"
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#include "nsEventDispatcher.h"
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#include "nsIJSEventListener.h"
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#ifdef MOZ_JSDEBUGGER
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#include "jsdIDebuggerService.h"
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#endif
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#include "nsDOMClassInfoID.h"
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#include "mozilla/BasicEvents.h"
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#include "mozilla/Maybe.h"
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#include "nsServiceManagerUtils.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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using mozilla::AutoSafeJSContext;
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NS_IMPL_CYCLE_COLLECTION_1(nsEventListenerInfo, mListener)
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DOMCI_DATA(EventListenerInfo, nsEventListenerInfo)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsEventListenerInfo)
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NS_INTERFACE_MAP_ENTRY(nsIEventListenerInfo)
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(EventListenerInfo)
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NS_INTERFACE_MAP_END
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NS_IMPL_CYCLE_COLLECTING_ADDREF(nsEventListenerInfo)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(nsEventListenerInfo)
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NS_IMETHODIMP
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nsEventListenerInfo::GetType(nsAString& aType)
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{
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aType = mType;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsEventListenerInfo::GetCapturing(bool* aCapturing)
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{
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*aCapturing = mCapturing;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsEventListenerInfo::GetAllowsUntrusted(bool* aAllowsUntrusted)
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{
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*aAllowsUntrusted = mAllowsUntrusted;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsEventListenerInfo::GetInSystemEventGroup(bool* aInSystemEventGroup)
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{
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*aInSystemEventGroup = mInSystemEventGroup;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsEventListenerInfo::GetListenerObject(JSContext* aCx,
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JS::MutableHandle<JS::Value> aObject)
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{
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mozilla::Maybe<JSAutoCompartment> ac;
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GetJSVal(aCx, ac, aObject.address());
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return NS_OK;
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}
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NS_IMPL_ISUPPORTS1(nsEventListenerService, nsIEventListenerService)
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// Caller must root *aJSVal!
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bool
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nsEventListenerInfo::GetJSVal(JSContext* aCx,
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mozilla::Maybe<JSAutoCompartment>& aAc,
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JS::Value* aJSVal)
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{
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*aJSVal = JSVAL_NULL;
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nsCOMPtr<nsIXPConnectWrappedJS> wrappedJS = do_QueryInterface(mListener);
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if (wrappedJS) {
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JS::Rooted<JSObject*> object(aCx, wrappedJS->GetJSObject());
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if (!object) {
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return false;
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}
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aAc.construct(aCx, object);
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*aJSVal = OBJECT_TO_JSVAL(object);
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return true;
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}
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nsCOMPtr<nsIJSEventListener> jsl = do_QueryInterface(mListener);
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if (jsl && jsl->GetHandler().HasEventHandler()) {
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JS::Handle<JSObject*> handler(jsl->GetHandler().Ptr()->Callable());
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if (handler) {
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aAc.construct(aCx, handler);
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*aJSVal = OBJECT_TO_JSVAL(handler);
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return true;
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}
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}
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return false;
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}
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NS_IMETHODIMP
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nsEventListenerInfo::ToSource(nsAString& aResult)
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{
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aResult.SetIsVoid(true);
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AutoSafeJSContext cx;
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mozilla::Maybe<JSAutoCompartment> ac;
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JS::Rooted<JS::Value> v(cx, JSVAL_NULL);
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if (GetJSVal(cx, ac, v.address())) {
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JSString* str = JS_ValueToSource(cx, v);
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if (str) {
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nsDependentJSString depStr;
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if (depStr.init(cx, str)) {
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aResult.Assign(depStr);
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}
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}
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsEventListenerInfo::GetDebugObject(nsISupports** aRetVal)
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{
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*aRetVal = nullptr;
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#ifdef MOZ_JSDEBUGGER
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nsresult rv = NS_OK;
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nsCOMPtr<jsdIDebuggerService> jsd =
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do_GetService("@mozilla.org/js/jsd/debugger-service;1", &rv);
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NS_ENSURE_SUCCESS(rv, NS_OK);
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bool isOn = false;
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jsd->GetIsOn(&isOn);
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NS_ENSURE_TRUE(isOn, NS_OK);
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AutoSafeJSContext cx;
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mozilla::Maybe<JSAutoCompartment> ac;
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JS::Rooted<JS::Value> v(cx, JSVAL_NULL);
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if (GetJSVal(cx, ac, v.address())) {
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nsCOMPtr<jsdIValue> jsdValue;
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rv = jsd->WrapValue(v, getter_AddRefs(jsdValue));
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NS_ENSURE_SUCCESS(rv, rv);
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jsdValue.forget(aRetVal);
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}
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#endif
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return NS_OK;
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}
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NS_IMETHODIMP
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nsEventListenerService::GetListenerInfoFor(nsIDOMEventTarget* aEventTarget,
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uint32_t* aCount,
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nsIEventListenerInfo*** aOutArray)
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{
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NS_ENSURE_ARG_POINTER(aEventTarget);
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*aCount = 0;
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*aOutArray = nullptr;
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nsCOMArray<nsIEventListenerInfo> listenerInfos;
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nsCOMPtr<EventTarget> eventTarget = do_QueryInterface(aEventTarget);
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NS_ENSURE_TRUE(eventTarget, NS_ERROR_NO_INTERFACE);
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nsEventListenerManager* elm = eventTarget->GetExistingListenerManager();
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if (elm) {
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elm->GetListenerInfo(&listenerInfos);
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}
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int32_t count = listenerInfos.Count();
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if (count == 0) {
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return NS_OK;
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}
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*aOutArray =
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static_cast<nsIEventListenerInfo**>(
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nsMemory::Alloc(sizeof(nsIEventListenerInfo*) * count));
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NS_ENSURE_TRUE(*aOutArray, NS_ERROR_OUT_OF_MEMORY);
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for (int32_t i = 0; i < count; ++i) {
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NS_ADDREF((*aOutArray)[i] = listenerInfos[i]);
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}
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*aCount = count;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsEventListenerService::GetEventTargetChainFor(nsIDOMEventTarget* aEventTarget,
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uint32_t* aCount,
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nsIDOMEventTarget*** aOutArray)
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{
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*aCount = 0;
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*aOutArray = nullptr;
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NS_ENSURE_ARG(aEventTarget);
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WidgetEvent event(true, NS_EVENT_NULL);
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nsCOMArray<EventTarget> targets;
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nsresult rv = nsEventDispatcher::Dispatch(aEventTarget, nullptr, &event,
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nullptr, nullptr, nullptr, &targets);
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NS_ENSURE_SUCCESS(rv, rv);
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int32_t count = targets.Count();
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if (count == 0) {
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return NS_OK;
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}
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*aOutArray =
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static_cast<nsIDOMEventTarget**>(
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nsMemory::Alloc(sizeof(nsIDOMEventTarget*) * count));
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NS_ENSURE_TRUE(*aOutArray, NS_ERROR_OUT_OF_MEMORY);
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for (int32_t i = 0; i < count; ++i) {
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NS_ADDREF((*aOutArray)[i] = targets[i]);
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}
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*aCount = count;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsEventListenerService::HasListenersFor(nsIDOMEventTarget* aEventTarget,
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const nsAString& aType,
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bool* aRetVal)
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{
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nsCOMPtr<EventTarget> eventTarget = do_QueryInterface(aEventTarget);
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NS_ENSURE_TRUE(eventTarget, NS_ERROR_NO_INTERFACE);
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nsEventListenerManager* elm = eventTarget->GetExistingListenerManager();
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*aRetVal = elm && elm->HasListenersFor(aType);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsEventListenerService::AddSystemEventListener(nsIDOMEventTarget *aTarget,
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const nsAString& aType,
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nsIDOMEventListener* aListener,
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bool aUseCapture)
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{
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NS_PRECONDITION(aTarget, "Missing target");
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NS_PRECONDITION(aListener, "Missing listener");
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nsCOMPtr<EventTarget> eventTarget = do_QueryInterface(aTarget);
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NS_ENSURE_TRUE(eventTarget, NS_ERROR_NO_INTERFACE);
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nsEventListenerManager* manager = eventTarget->GetOrCreateListenerManager();
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NS_ENSURE_STATE(manager);
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EventListenerFlags flags =
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aUseCapture ? TrustedEventsAtSystemGroupCapture() :
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TrustedEventsAtSystemGroupBubble();
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manager->AddEventListenerByType(aListener, aType, flags);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsEventListenerService::RemoveSystemEventListener(nsIDOMEventTarget *aTarget,
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const nsAString& aType,
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nsIDOMEventListener* aListener,
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bool aUseCapture)
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{
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NS_PRECONDITION(aTarget, "Missing target");
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NS_PRECONDITION(aListener, "Missing listener");
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nsCOMPtr<EventTarget> eventTarget = do_QueryInterface(aTarget);
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NS_ENSURE_TRUE(eventTarget, NS_ERROR_NO_INTERFACE);
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nsEventListenerManager* manager = eventTarget->GetExistingListenerManager();
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if (manager) {
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EventListenerFlags flags =
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aUseCapture ? TrustedEventsAtSystemGroupCapture() :
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TrustedEventsAtSystemGroupBubble();
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manager->RemoveEventListenerByType(aListener, aType, flags);
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsEventListenerService::AddListenerForAllEvents(nsIDOMEventTarget* aTarget,
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nsIDOMEventListener* aListener,
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bool aUseCapture,
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bool aWantsUntrusted,
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bool aSystemEventGroup)
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{
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NS_ENSURE_STATE(aTarget && aListener);
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nsCOMPtr<EventTarget> eventTarget = do_QueryInterface(aTarget);
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NS_ENSURE_TRUE(eventTarget, NS_ERROR_NO_INTERFACE);
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nsEventListenerManager* manager = eventTarget->GetOrCreateListenerManager();
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NS_ENSURE_STATE(manager);
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manager->AddListenerForAllEvents(aListener, aUseCapture, aWantsUntrusted,
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aSystemEventGroup);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsEventListenerService::RemoveListenerForAllEvents(nsIDOMEventTarget* aTarget,
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nsIDOMEventListener* aListener,
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bool aUseCapture,
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bool aSystemEventGroup)
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{
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NS_ENSURE_STATE(aTarget && aListener);
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nsCOMPtr<EventTarget> eventTarget = do_QueryInterface(aTarget);
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NS_ENSURE_TRUE(eventTarget, NS_ERROR_NO_INTERFACE);
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nsEventListenerManager* manager = eventTarget->GetExistingListenerManager();
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if (manager) {
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manager->RemoveListenerForAllEvents(aListener, aUseCapture, aSystemEventGroup);
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}
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return NS_OK;
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}
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nsresult
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NS_NewEventListenerService(nsIEventListenerService** aResult)
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{
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*aResult = new nsEventListenerService();
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NS_ADDREF(*aResult);
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return NS_OK;
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}
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