mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
1a22fa2864
Backed out changeset a7c972407578 (bug 1082963) Backed out changeset 94d1b30bde00 (bug 989198) Backed out changeset 01e064ceb505 (bug 989198) Backed out changeset f5a538109e36 (bug 989198) Backed out changeset 3ff227d79d74 (bug 989198) Backed out changeset 186743fc6f6d (bug 989198) CLOSED TREE
873 lines
31 KiB
C++
873 lines
31 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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 "nsPresContext.h"
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#include "nsContentUtils.h"
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#include "nsError.h"
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#include <new>
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#include "nsIContent.h"
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#include "nsIDocument.h"
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#include "nsINode.h"
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#include "nsPIDOMWindow.h"
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#include "GeckoProfiler.h"
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#include "mozilla/ContentEvents.h"
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#include "mozilla/dom/CloseEvent.h"
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#include "mozilla/dom/DeviceOrientationEvent.h"
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#include "mozilla/dom/EventTarget.h"
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#include "mozilla/dom/HashChangeEvent.h"
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#include "mozilla/dom/PageTransitionEvent.h"
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#include "mozilla/dom/PopStateEvent.h"
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#include "mozilla/dom/StorageEvent.h"
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#include "mozilla/dom/TouchEvent.h"
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#include "mozilla/EventDispatcher.h"
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#include "mozilla/EventListenerManager.h"
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#include "mozilla/InternalMutationEvent.h"
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#include "mozilla/ipc/MessageChannel.h"
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#include "mozilla/MiscEvents.h"
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#include "mozilla/MouseEvents.h"
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#include "mozilla/TextEvents.h"
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#include "mozilla/TouchEvents.h"
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#include "mozilla/unused.h"
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namespace mozilla {
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using namespace dom;
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class ELMCreationDetector
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{
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public:
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ELMCreationDetector()
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// We can do this optimization only in the main thread.
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: mNonMainThread(!NS_IsMainThread())
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, mInitialCount(mNonMainThread ?
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0 : EventListenerManager::sMainThreadCreatedCount)
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{
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}
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bool MayHaveNewListenerManager()
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{
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return mNonMainThread ||
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mInitialCount != EventListenerManager::sMainThreadCreatedCount;
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}
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bool IsMainThread()
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{
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return !mNonMainThread;
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}
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private:
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bool mNonMainThread;
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uint32_t mInitialCount;
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};
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#define NS_TARGET_CHAIN_FORCE_CONTENT_DISPATCH (1 << 0)
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#define NS_TARGET_CHAIN_WANTS_WILL_HANDLE_EVENT (1 << 1)
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#define NS_TARGET_CHAIN_MAY_HAVE_MANAGER (1 << 2)
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// EventTargetChainItem represents a single item in the event target chain.
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class EventTargetChainItem
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{
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private:
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explicit EventTargetChainItem(EventTarget* aTarget);
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public:
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EventTargetChainItem()
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: mFlags(0)
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, mItemFlags(0)
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{
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}
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static EventTargetChainItem* Create(nsTArray<EventTargetChainItem>& aChain,
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EventTarget* aTarget,
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EventTargetChainItem* aChild = nullptr)
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{
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MOZ_ASSERT(!aChild || &aChain.ElementAt(aChain.Length() - 1) == aChild);
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return new (aChain.AppendElement()) EventTargetChainItem(aTarget);
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}
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static void DestroyLast(nsTArray<EventTargetChainItem>& aChain,
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EventTargetChainItem* aItem)
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{
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uint32_t lastIndex = aChain.Length() - 1;
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MOZ_ASSERT(&aChain[lastIndex] == aItem);
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aChain.RemoveElementAt(lastIndex);
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}
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bool IsValid()
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{
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NS_WARN_IF_FALSE(!!(mTarget), "Event target is not valid!");
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return !!(mTarget);
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}
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EventTarget* GetNewTarget()
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{
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return mNewTarget;
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}
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void SetNewTarget(EventTarget* aNewTarget)
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{
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mNewTarget = aNewTarget;
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}
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void SetForceContentDispatch(bool aForce)
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{
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if (aForce) {
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mFlags |= NS_TARGET_CHAIN_FORCE_CONTENT_DISPATCH;
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} else {
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mFlags &= ~NS_TARGET_CHAIN_FORCE_CONTENT_DISPATCH;
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}
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}
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bool ForceContentDispatch()
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{
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return !!(mFlags & NS_TARGET_CHAIN_FORCE_CONTENT_DISPATCH);
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}
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void SetWantsWillHandleEvent(bool aWants)
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{
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if (aWants) {
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mFlags |= NS_TARGET_CHAIN_WANTS_WILL_HANDLE_EVENT;
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} else {
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mFlags &= ~NS_TARGET_CHAIN_WANTS_WILL_HANDLE_EVENT;
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}
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}
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bool WantsWillHandleEvent()
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{
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return !!(mFlags & NS_TARGET_CHAIN_WANTS_WILL_HANDLE_EVENT);
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}
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void SetMayHaveListenerManager(bool aMayHave)
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{
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if (aMayHave) {
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mFlags |= NS_TARGET_CHAIN_MAY_HAVE_MANAGER;
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} else {
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mFlags &= ~NS_TARGET_CHAIN_MAY_HAVE_MANAGER;
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}
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}
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bool MayHaveListenerManager()
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{
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return !!(mFlags & NS_TARGET_CHAIN_MAY_HAVE_MANAGER);
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}
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EventTarget* CurrentTarget()
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{
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return mTarget;
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}
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/**
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* Dispatches event through the event target chain.
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* Handles capture, target and bubble phases both in default
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* and system event group and calls also PostHandleEvent for each
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* item in the chain.
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*/
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static void HandleEventTargetChain(nsTArray<EventTargetChainItem>& aChain,
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EventChainPostVisitor& aVisitor,
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EventDispatchingCallback* aCallback,
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ELMCreationDetector& aCd);
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/**
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* Resets aVisitor object and calls PreHandleEvent.
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* Copies mItemFlags and mItemData to the current EventTargetChainItem.
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*/
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void PreHandleEvent(EventChainPreVisitor& aVisitor);
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/**
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* If the current item in the event target chain has an event listener
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* manager, this method calls EventListenerManager::HandleEvent().
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*/
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void HandleEvent(EventChainPostVisitor& aVisitor,
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ELMCreationDetector& aCd)
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{
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if (WantsWillHandleEvent()) {
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mTarget->WillHandleEvent(aVisitor);
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}
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if (aVisitor.mEvent->mFlags.mPropagationStopped) {
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return;
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}
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if (!mManager) {
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if (!MayHaveListenerManager() && !aCd.MayHaveNewListenerManager()) {
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return;
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}
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mManager = mTarget->GetExistingListenerManager();
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}
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if (mManager) {
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NS_ASSERTION(aVisitor.mEvent->currentTarget == nullptr,
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"CurrentTarget should be null!");
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mManager->HandleEvent(aVisitor.mPresContext, aVisitor.mEvent,
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&aVisitor.mDOMEvent,
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CurrentTarget(),
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&aVisitor.mEventStatus);
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NS_ASSERTION(aVisitor.mEvent->currentTarget == nullptr,
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"CurrentTarget should be null!");
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}
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}
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/**
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* Copies mItemFlags and mItemData to aVisitor and calls PostHandleEvent.
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*/
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void PostHandleEvent(EventChainPostVisitor& aVisitor);
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nsCOMPtr<EventTarget> mTarget;
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uint16_t mFlags;
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uint16_t mItemFlags;
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nsCOMPtr<nsISupports> mItemData;
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// Event retargeting must happen whenever mNewTarget is non-null.
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nsCOMPtr<EventTarget> mNewTarget;
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// Cache mTarget's event listener manager.
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nsRefPtr<EventListenerManager> mManager;
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};
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EventTargetChainItem::EventTargetChainItem(EventTarget* aTarget)
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: mTarget(aTarget)
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, mFlags(0)
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, mItemFlags(0)
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{
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MOZ_ASSERT(!aTarget || mTarget == aTarget->GetTargetForEventTargetChain());
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}
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void
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EventTargetChainItem::PreHandleEvent(EventChainPreVisitor& aVisitor)
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{
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aVisitor.Reset();
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unused << mTarget->PreHandleEvent(aVisitor);
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SetForceContentDispatch(aVisitor.mForceContentDispatch);
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SetWantsWillHandleEvent(aVisitor.mWantsWillHandleEvent);
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SetMayHaveListenerManager(aVisitor.mMayHaveListenerManager);
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mItemFlags = aVisitor.mItemFlags;
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mItemData = aVisitor.mItemData;
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}
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void
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EventTargetChainItem::PostHandleEvent(EventChainPostVisitor& aVisitor)
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{
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aVisitor.mItemFlags = mItemFlags;
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aVisitor.mItemData = mItemData;
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mTarget->PostHandleEvent(aVisitor);
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}
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void
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EventTargetChainItem::HandleEventTargetChain(
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nsTArray<EventTargetChainItem>& aChain,
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EventChainPostVisitor& aVisitor,
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EventDispatchingCallback* aCallback,
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ELMCreationDetector& aCd)
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{
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// Save the target so that it can be restored later.
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nsCOMPtr<EventTarget> firstTarget = aVisitor.mEvent->target;
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uint32_t chainLength = aChain.Length();
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// Capture
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aVisitor.mEvent->mFlags.mInCapturePhase = true;
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aVisitor.mEvent->mFlags.mInBubblingPhase = false;
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for (uint32_t i = chainLength - 1; i > 0; --i) {
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EventTargetChainItem& item = aChain[i];
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if ((!aVisitor.mEvent->mFlags.mNoContentDispatch ||
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item.ForceContentDispatch()) &&
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!aVisitor.mEvent->mFlags.mPropagationStopped) {
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item.HandleEvent(aVisitor, aCd);
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}
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if (item.GetNewTarget()) {
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// item is at anonymous boundary. Need to retarget for the child items.
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for (uint32_t j = i; j > 0; --j) {
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uint32_t childIndex = j - 1;
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EventTarget* newTarget = aChain[childIndex].GetNewTarget();
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if (newTarget) {
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aVisitor.mEvent->target = newTarget;
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break;
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}
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}
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}
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}
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// Target
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aVisitor.mEvent->mFlags.mInBubblingPhase = true;
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EventTargetChainItem& targetItem = aChain[0];
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if (!aVisitor.mEvent->mFlags.mPropagationStopped &&
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(!aVisitor.mEvent->mFlags.mNoContentDispatch ||
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targetItem.ForceContentDispatch())) {
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targetItem.HandleEvent(aVisitor, aCd);
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}
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if (aVisitor.mEvent->mFlags.mInSystemGroup) {
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targetItem.PostHandleEvent(aVisitor);
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}
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// Bubble
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aVisitor.mEvent->mFlags.mInCapturePhase = false;
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for (uint32_t i = 1; i < chainLength; ++i) {
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EventTargetChainItem& item = aChain[i];
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EventTarget* newTarget = item.GetNewTarget();
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if (newTarget) {
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// Item is at anonymous boundary. Need to retarget for the current item
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// and for parent items.
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aVisitor.mEvent->target = newTarget;
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}
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if (aVisitor.mEvent->mFlags.mBubbles || newTarget) {
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if ((!aVisitor.mEvent->mFlags.mNoContentDispatch ||
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item.ForceContentDispatch()) &&
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!aVisitor.mEvent->mFlags.mPropagationStopped) {
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item.HandleEvent(aVisitor, aCd);
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}
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if (aVisitor.mEvent->mFlags.mInSystemGroup) {
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item.PostHandleEvent(aVisitor);
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}
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}
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}
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aVisitor.mEvent->mFlags.mInBubblingPhase = false;
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if (!aVisitor.mEvent->mFlags.mInSystemGroup) {
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// Dispatch to the system event group. Make sure to clear the
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// STOP_DISPATCH flag since this resets for each event group.
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aVisitor.mEvent->mFlags.mPropagationStopped = false;
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aVisitor.mEvent->mFlags.mImmediatePropagationStopped = false;
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// Setting back the original target of the event.
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aVisitor.mEvent->target = aVisitor.mEvent->originalTarget;
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// Special handling if PresShell (or some other caller)
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// used a callback object.
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if (aCallback) {
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aCallback->HandleEvent(aVisitor);
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}
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// Retarget for system event group (which does the default handling too).
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// Setting back the target which was used also for default event group.
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aVisitor.mEvent->target = firstTarget;
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aVisitor.mEvent->mFlags.mInSystemGroup = true;
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HandleEventTargetChain(aChain,
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aVisitor,
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aCallback,
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aCd);
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aVisitor.mEvent->mFlags.mInSystemGroup = false;
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// After dispatch, clear all the propagation flags so that
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// system group listeners don't affect to the event.
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aVisitor.mEvent->mFlags.mPropagationStopped = false;
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aVisitor.mEvent->mFlags.mImmediatePropagationStopped = false;
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}
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}
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static nsTArray<EventTargetChainItem>* sCachedMainThreadChain = nullptr;
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/* static */ void
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EventDispatcher::Shutdown()
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{
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delete sCachedMainThreadChain;
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sCachedMainThreadChain = nullptr;
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}
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EventTargetChainItem*
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EventTargetChainItemForChromeTarget(nsTArray<EventTargetChainItem>& aChain,
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nsINode* aNode,
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EventTargetChainItem* aChild = nullptr)
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{
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if (!aNode->IsInComposedDoc()) {
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return nullptr;
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}
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nsPIDOMWindow* win = aNode->OwnerDoc()->GetInnerWindow();
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EventTarget* piTarget = win ? win->GetParentTarget() : nullptr;
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NS_ENSURE_TRUE(piTarget, nullptr);
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EventTargetChainItem* etci =
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EventTargetChainItem::Create(aChain,
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piTarget->GetTargetForEventTargetChain(),
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aChild);
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if (!etci->IsValid()) {
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EventTargetChainItem::DestroyLast(aChain, etci);
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return nullptr;
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}
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return etci;
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}
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/* static */ nsresult
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EventDispatcher::Dispatch(nsISupports* aTarget,
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nsPresContext* aPresContext,
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WidgetEvent* aEvent,
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nsIDOMEvent* aDOMEvent,
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nsEventStatus* aEventStatus,
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EventDispatchingCallback* aCallback,
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nsCOMArray<EventTarget>* aTargets)
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{
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PROFILER_LABEL("EventDispatcher", "Dispatch",
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js::ProfileEntry::Category::EVENTS);
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NS_ASSERTION(aEvent, "Trying to dispatch without WidgetEvent!");
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NS_ENSURE_TRUE(!aEvent->mFlags.mIsBeingDispatched,
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NS_ERROR_DOM_INVALID_STATE_ERR);
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NS_ASSERTION(!aTargets || !aEvent->message, "Wrong parameters!");
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// If we're dispatching an already created DOMEvent object, make
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// sure it is initialized!
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// If aTargets is non-null, the event isn't going to be dispatched.
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NS_ENSURE_TRUE(aEvent->message || !aDOMEvent || aTargets,
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NS_ERROR_DOM_INVALID_STATE_ERR);
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nsCOMPtr<EventTarget> target = do_QueryInterface(aTarget);
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bool retargeted = false;
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if (aEvent->mFlags.mRetargetToNonNativeAnonymous) {
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nsCOMPtr<nsIContent> content = do_QueryInterface(target);
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if (content && content->IsInNativeAnonymousSubtree()) {
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nsCOMPtr<EventTarget> newTarget =
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do_QueryInterface(content->FindFirstNonChromeOnlyAccessContent());
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NS_ENSURE_STATE(newTarget);
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aEvent->originalTarget = target;
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target = newTarget;
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retargeted = true;
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}
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}
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if (aEvent->mFlags.mOnlyChromeDispatch) {
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nsCOMPtr<nsINode> node = do_QueryInterface(aTarget);
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if (!node) {
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nsCOMPtr<nsPIDOMWindow> win = do_QueryInterface(aTarget);
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if (win) {
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node = win->GetExtantDoc();
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}
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}
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NS_ENSURE_STATE(node);
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nsIDocument* doc = node->OwnerDoc();
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if (!nsContentUtils::IsChromeDoc(doc)) {
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nsPIDOMWindow* win = doc ? doc->GetInnerWindow() : nullptr;
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// If we can't dispatch the event to chrome, do nothing.
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EventTarget* piTarget = win ? win->GetParentTarget() : nullptr;
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NS_ENSURE_TRUE(piTarget, NS_OK);
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// Set the target to be the original dispatch target,
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aEvent->target = target;
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// but use chrome event handler or TabChildGlobal for event target chain.
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target = piTarget;
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}
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}
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#ifdef DEBUG
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if (!nsContentUtils::IsSafeToRunScript()) {
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nsresult rv = NS_ERROR_FAILURE;
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if (target->GetContextForEventHandlers(&rv) ||
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NS_FAILED(rv)) {
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nsCOMPtr<nsINode> node = do_QueryInterface(target);
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if (node && nsContentUtils::IsChromeDoc(node->OwnerDoc())) {
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NS_WARNING("Fix the caller!");
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} else {
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NS_ERROR("This is unsafe! Fix the caller!");
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}
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}
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}
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if (aDOMEvent) {
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WidgetEvent* innerEvent = aDOMEvent->GetInternalNSEvent();
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NS_ASSERTION(innerEvent == aEvent,
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"The inner event of aDOMEvent is not the same as aEvent!");
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}
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#endif
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nsresult rv = NS_OK;
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bool externalDOMEvent = !!(aDOMEvent);
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// If we have a PresContext, make sure it doesn't die before
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// event dispatching is finished.
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nsRefPtr<nsPresContext> kungFuDeathGrip(aPresContext);
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ELMCreationDetector cd;
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nsTArray<EventTargetChainItem> chain;
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if (cd.IsMainThread()) {
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if (!sCachedMainThreadChain) {
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sCachedMainThreadChain = new nsTArray<EventTargetChainItem>();
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}
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chain.SwapElements(*sCachedMainThreadChain);
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chain.SetCapacity(128);
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}
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// Create the event target chain item for the event target.
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EventTargetChainItem* targetEtci =
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EventTargetChainItem::Create(chain, target->GetTargetForEventTargetChain());
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MOZ_ASSERT(&chain[0] == targetEtci);
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if (!targetEtci->IsValid()) {
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EventTargetChainItem::DestroyLast(chain, targetEtci);
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return NS_ERROR_FAILURE;
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}
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// Make sure that nsIDOMEvent::target and nsIDOMEvent::originalTarget
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// point to the last item in the chain.
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if (!aEvent->target) {
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// Note, CurrentTarget() points always to the object returned by
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// GetTargetForEventTargetChain().
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aEvent->target = targetEtci->CurrentTarget();
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} else {
|
|
// XXX But if the target is already set, use that. This is a hack
|
|
// for the 'load', 'beforeunload' and 'unload' events,
|
|
// which are dispatched to |window| but have document as their target.
|
|
//
|
|
// Make sure that the event target points to the right object.
|
|
aEvent->target = aEvent->target->GetTargetForEventTargetChain();
|
|
NS_ENSURE_STATE(aEvent->target);
|
|
}
|
|
|
|
if (retargeted) {
|
|
aEvent->originalTarget =
|
|
aEvent->originalTarget->GetTargetForEventTargetChain();
|
|
NS_ENSURE_STATE(aEvent->originalTarget);
|
|
}
|
|
else {
|
|
aEvent->originalTarget = aEvent->target;
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(aEvent->originalTarget);
|
|
bool isInAnon = (content && (content->IsInAnonymousSubtree() ||
|
|
content->IsInShadowTree()));
|
|
|
|
aEvent->mFlags.mIsBeingDispatched = true;
|
|
|
|
// Create visitor object and start event dispatching.
|
|
// PreHandleEvent for the original target.
|
|
nsEventStatus status = aEventStatus ? *aEventStatus : nsEventStatus_eIgnore;
|
|
EventChainPreVisitor preVisitor(aPresContext, aEvent, aDOMEvent, status,
|
|
isInAnon);
|
|
targetEtci->PreHandleEvent(preVisitor);
|
|
|
|
if (!preVisitor.mCanHandle && preVisitor.mAutomaticChromeDispatch && content) {
|
|
// Event target couldn't handle the event. Try to propagate to chrome.
|
|
EventTargetChainItem::DestroyLast(chain, targetEtci);
|
|
targetEtci = EventTargetChainItemForChromeTarget(chain, content);
|
|
NS_ENSURE_STATE(targetEtci);
|
|
MOZ_ASSERT(&chain[0] == targetEtci);
|
|
targetEtci->PreHandleEvent(preVisitor);
|
|
}
|
|
if (preVisitor.mCanHandle) {
|
|
// At least the original target can handle the event.
|
|
// Setting the retarget to the |target| simplifies retargeting code.
|
|
nsCOMPtr<EventTarget> t = do_QueryInterface(aEvent->target);
|
|
targetEtci->SetNewTarget(t);
|
|
EventTargetChainItem* topEtci = targetEtci;
|
|
targetEtci = nullptr;
|
|
while (preVisitor.mParentTarget) {
|
|
EventTarget* parentTarget = preVisitor.mParentTarget;
|
|
EventTargetChainItem* parentEtci =
|
|
EventTargetChainItem::Create(chain, preVisitor.mParentTarget, topEtci);
|
|
if (!parentEtci->IsValid()) {
|
|
EventTargetChainItem::DestroyLast(chain, parentEtci);
|
|
rv = NS_ERROR_FAILURE;
|
|
break;
|
|
}
|
|
|
|
// Item needs event retargetting.
|
|
if (preVisitor.mEventTargetAtParent) {
|
|
// Need to set the target of the event
|
|
// so that also the next retargeting works.
|
|
preVisitor.mEvent->target = preVisitor.mEventTargetAtParent;
|
|
parentEtci->SetNewTarget(preVisitor.mEventTargetAtParent);
|
|
}
|
|
|
|
parentEtci->PreHandleEvent(preVisitor);
|
|
if (preVisitor.mCanHandle) {
|
|
topEtci = parentEtci;
|
|
} else {
|
|
EventTargetChainItem::DestroyLast(chain, parentEtci);
|
|
parentEtci = nullptr;
|
|
if (preVisitor.mAutomaticChromeDispatch && content) {
|
|
// Even if the current target can't handle the event, try to
|
|
// propagate to chrome.
|
|
nsCOMPtr<nsINode> disabledTarget = do_QueryInterface(parentTarget);
|
|
if (disabledTarget) {
|
|
parentEtci = EventTargetChainItemForChromeTarget(chain,
|
|
disabledTarget,
|
|
topEtci);
|
|
if (parentEtci) {
|
|
parentEtci->PreHandleEvent(preVisitor);
|
|
if (preVisitor.mCanHandle) {
|
|
chain[0].SetNewTarget(parentTarget);
|
|
topEtci = parentEtci;
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if (NS_SUCCEEDED(rv)) {
|
|
if (aTargets) {
|
|
aTargets->Clear();
|
|
aTargets->SetCapacity(chain.Length());
|
|
for (uint32_t i = 0; i < chain.Length(); ++i) {
|
|
aTargets->AppendObject(chain[i].CurrentTarget()->GetTargetForDOMEvent());
|
|
}
|
|
} else {
|
|
// Event target chain is created. Handle the chain.
|
|
EventChainPostVisitor postVisitor(preVisitor);
|
|
EventTargetChainItem::HandleEventTargetChain(chain, postVisitor,
|
|
aCallback, cd);
|
|
|
|
preVisitor.mEventStatus = postVisitor.mEventStatus;
|
|
// If the DOM event was created during event flow.
|
|
if (!preVisitor.mDOMEvent && postVisitor.mDOMEvent) {
|
|
preVisitor.mDOMEvent = postVisitor.mDOMEvent;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Note, EventTargetChainItem objects are deleted when the chain goes out of
|
|
// the scope.
|
|
|
|
aEvent->mFlags.mIsBeingDispatched = false;
|
|
aEvent->mFlags.mDispatchedAtLeastOnce = true;
|
|
|
|
if (!externalDOMEvent && preVisitor.mDOMEvent) {
|
|
// An dom::Event was created while dispatching the event.
|
|
// Duplicate private data if someone holds a pointer to it.
|
|
nsrefcnt rc = 0;
|
|
NS_RELEASE2(preVisitor.mDOMEvent, rc);
|
|
if (preVisitor.mDOMEvent) {
|
|
preVisitor.mDOMEvent->DuplicatePrivateData();
|
|
}
|
|
}
|
|
|
|
if (aEventStatus) {
|
|
*aEventStatus = preVisitor.mEventStatus;
|
|
}
|
|
|
|
if (cd.IsMainThread() && chain.Capacity() == 128 && sCachedMainThreadChain) {
|
|
chain.ClearAndRetainStorage();
|
|
chain.SwapElements(*sCachedMainThreadChain);
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
/* static */ nsresult
|
|
EventDispatcher::DispatchDOMEvent(nsISupports* aTarget,
|
|
WidgetEvent* aEvent,
|
|
nsIDOMEvent* aDOMEvent,
|
|
nsPresContext* aPresContext,
|
|
nsEventStatus* aEventStatus)
|
|
{
|
|
if (aDOMEvent) {
|
|
WidgetEvent* innerEvent = aDOMEvent->GetInternalNSEvent();
|
|
NS_ENSURE_TRUE(innerEvent, NS_ERROR_ILLEGAL_VALUE);
|
|
|
|
bool dontResetTrusted = false;
|
|
if (innerEvent->mFlags.mDispatchedAtLeastOnce) {
|
|
innerEvent->target = nullptr;
|
|
innerEvent->originalTarget = nullptr;
|
|
} else {
|
|
aDOMEvent->GetIsTrusted(&dontResetTrusted);
|
|
}
|
|
|
|
if (!dontResetTrusted) {
|
|
//Check security state to determine if dispatcher is trusted
|
|
aDOMEvent->SetTrusted(nsContentUtils::ThreadsafeIsCallerChrome());
|
|
}
|
|
|
|
return EventDispatcher::Dispatch(aTarget, aPresContext, innerEvent,
|
|
aDOMEvent, aEventStatus);
|
|
} else if (aEvent) {
|
|
return EventDispatcher::Dispatch(aTarget, aPresContext, aEvent,
|
|
aDOMEvent, aEventStatus);
|
|
}
|
|
return NS_ERROR_ILLEGAL_VALUE;
|
|
}
|
|
|
|
/* static */ nsresult
|
|
EventDispatcher::CreateEvent(EventTarget* aOwner,
|
|
nsPresContext* aPresContext,
|
|
WidgetEvent* aEvent,
|
|
const nsAString& aEventType,
|
|
nsIDOMEvent** aDOMEvent)
|
|
{
|
|
*aDOMEvent = nullptr;
|
|
|
|
if (aEvent) {
|
|
switch(aEvent->mClass) {
|
|
case eMutationEventClass:
|
|
return NS_NewDOMMutationEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsMutationEvent());
|
|
case eGUIEventClass:
|
|
case eScrollPortEventClass:
|
|
case eUIEventClass:
|
|
return NS_NewDOMUIEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsGUIEvent());
|
|
case eScrollAreaEventClass:
|
|
return NS_NewDOMScrollAreaEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsScrollAreaEvent());
|
|
case eKeyboardEventClass:
|
|
return NS_NewDOMKeyboardEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsKeyboardEvent());
|
|
case eCompositionEventClass:
|
|
return NS_NewDOMCompositionEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsCompositionEvent());
|
|
case eMouseEventClass:
|
|
return NS_NewDOMMouseEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsMouseEvent());
|
|
case eFocusEventClass:
|
|
return NS_NewDOMFocusEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsFocusEvent());
|
|
case eMouseScrollEventClass:
|
|
return NS_NewDOMMouseScrollEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsMouseScrollEvent());
|
|
case eWheelEventClass:
|
|
return NS_NewDOMWheelEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsWheelEvent());
|
|
case eEditorInputEventClass:
|
|
return NS_NewDOMInputEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsEditorInputEvent());
|
|
case eDragEventClass:
|
|
return NS_NewDOMDragEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsDragEvent());
|
|
case eClipboardEventClass:
|
|
return NS_NewDOMClipboardEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsClipboardEvent());
|
|
case eSVGZoomEventClass:
|
|
return NS_NewDOMSVGZoomEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsSVGZoomEvent());
|
|
case eSMILTimeEventClass:
|
|
return NS_NewDOMTimeEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsSMILTimeEvent());
|
|
case eCommandEventClass:
|
|
return NS_NewDOMCommandEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsCommandEvent());
|
|
case eSimpleGestureEventClass:
|
|
return NS_NewDOMSimpleGestureEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsSimpleGestureEvent());
|
|
case ePointerEventClass:
|
|
return NS_NewDOMPointerEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsPointerEvent());
|
|
case eTouchEventClass:
|
|
return NS_NewDOMTouchEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsTouchEvent());
|
|
case eTransitionEventClass:
|
|
return NS_NewDOMTransitionEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsTransitionEvent());
|
|
case eAnimationEventClass:
|
|
return NS_NewDOMAnimationEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsAnimationEvent());
|
|
default:
|
|
// For all other types of events, create a vanilla event object.
|
|
return NS_NewDOMEvent(aDOMEvent, aOwner, aPresContext, aEvent);
|
|
}
|
|
}
|
|
|
|
// And if we didn't get an event, check the type argument.
|
|
|
|
if (aEventType.LowerCaseEqualsLiteral("mouseevent") ||
|
|
aEventType.LowerCaseEqualsLiteral("mouseevents") ||
|
|
aEventType.LowerCaseEqualsLiteral("popupevents"))
|
|
return NS_NewDOMMouseEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("mousescrollevents"))
|
|
return NS_NewDOMMouseScrollEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("dragevent") ||
|
|
aEventType.LowerCaseEqualsLiteral("dragevents"))
|
|
return NS_NewDOMDragEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("keyboardevent") ||
|
|
aEventType.LowerCaseEqualsLiteral("keyevents"))
|
|
return NS_NewDOMKeyboardEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("compositionevent") ||
|
|
aEventType.LowerCaseEqualsLiteral("textevent") ||
|
|
aEventType.LowerCaseEqualsLiteral("textevents")) {
|
|
return NS_NewDOMCompositionEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("mutationevent") ||
|
|
aEventType.LowerCaseEqualsLiteral("mutationevents"))
|
|
return NS_NewDOMMutationEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("deviceorientationevent")) {
|
|
DeviceOrientationEventInit init;
|
|
nsRefPtr<DeviceOrientationEvent> event =
|
|
DeviceOrientationEvent::Constructor(aOwner, EmptyString(), init);
|
|
event.forget(aDOMEvent);
|
|
return NS_OK;
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("devicemotionevent"))
|
|
return NS_NewDOMDeviceMotionEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("uievent") ||
|
|
aEventType.LowerCaseEqualsLiteral("uievents"))
|
|
return NS_NewDOMUIEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("event") ||
|
|
aEventType.LowerCaseEqualsLiteral("events") ||
|
|
aEventType.LowerCaseEqualsLiteral("htmlevents") ||
|
|
aEventType.LowerCaseEqualsLiteral("svgevent") ||
|
|
aEventType.LowerCaseEqualsLiteral("svgevents"))
|
|
return NS_NewDOMEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("svgzoomevent") ||
|
|
aEventType.LowerCaseEqualsLiteral("svgzoomevents"))
|
|
return NS_NewDOMSVGZoomEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("timeevent") ||
|
|
aEventType.LowerCaseEqualsLiteral("timeevents"))
|
|
return NS_NewDOMTimeEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("xulcommandevent") ||
|
|
aEventType.LowerCaseEqualsLiteral("xulcommandevents"))
|
|
return NS_NewDOMXULCommandEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("commandevent") ||
|
|
aEventType.LowerCaseEqualsLiteral("commandevents"))
|
|
return NS_NewDOMCommandEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("datacontainerevent") ||
|
|
aEventType.LowerCaseEqualsLiteral("datacontainerevents"))
|
|
return NS_NewDOMDataContainerEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("messageevent"))
|
|
return NS_NewDOMMessageEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("notifypaintevent"))
|
|
return NS_NewDOMNotifyPaintEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("simplegestureevent"))
|
|
return NS_NewDOMSimpleGestureEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("beforeunloadevent"))
|
|
return NS_NewDOMBeforeUnloadEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
// XXXkhuey this is broken
|
|
if (aEventType.LowerCaseEqualsLiteral("pagetransition")) {
|
|
PageTransitionEventInit init;
|
|
nsRefPtr<PageTransitionEvent> event =
|
|
PageTransitionEvent::Constructor(aOwner, EmptyString(), init);
|
|
event.forget(aDOMEvent);
|
|
return NS_OK;
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("scrollareaevent"))
|
|
return NS_NewDOMScrollAreaEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("closeevent")) {
|
|
CloseEventInit init;
|
|
nsRefPtr<CloseEvent> event =
|
|
CloseEvent::Constructor(aOwner, EmptyString(), init);
|
|
event.forget(aDOMEvent);
|
|
return NS_OK;
|
|
}
|
|
// XXXkhuey Chrome supports popstateevent here, even though it provides no
|
|
// initPopStateEvent method. This is nuts ... but copying it is unlikely to
|
|
// break the web.
|
|
if (aEventType.LowerCaseEqualsLiteral("popstateevent")) {
|
|
AutoJSContext cx;
|
|
RootedDictionary<PopStateEventInit> init(cx);
|
|
nsRefPtr<PopStateEvent> event =
|
|
PopStateEvent::Constructor(aOwner, EmptyString(), init);
|
|
event.forget(aDOMEvent);
|
|
return NS_OK;
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("touchevent") &&
|
|
TouchEvent::PrefEnabled())
|
|
return NS_NewDOMTouchEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("hashchangeevent")) {
|
|
HashChangeEventInit init;
|
|
nsRefPtr<HashChangeEvent> event =
|
|
HashChangeEvent::Constructor(aOwner, EmptyString(), init);
|
|
event.forget(aDOMEvent);
|
|
return NS_OK;
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("customevent"))
|
|
return NS_NewDOMCustomEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("storageevent")) {
|
|
return NS_NewDOMStorageEvent(aDOMEvent, aOwner);
|
|
}
|
|
|
|
|
|
// NEW EVENT TYPES SHOULD NOT BE ADDED HERE; THEY SHOULD USE ONLY EVENT
|
|
// CONSTRUCTORS
|
|
|
|
return NS_ERROR_DOM_NOT_SUPPORTED_ERR;
|
|
}
|
|
|
|
} // namespace mozilla
|