зеркало из https://github.com/mozilla/gecko-dev.git
841 строка
31 KiB
C++
841 строка
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 "nsEventDispatcher.h"
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#include "nsPresContext.h"
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#include "nsEventListenerManager.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 "nsDOMTouchEvent.h"
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#include "GeckoProfiler.h"
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#include "GeneratedEvents.h"
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#include "mozilla/ContentEvents.h"
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#include "mozilla/dom/EventTarget.h"
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#include "mozilla/MiscEvents.h"
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#include "mozilla/MouseEvents.h"
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#include "mozilla/MutationEvent.h"
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#include "mozilla/TextEvents.h"
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#include "mozilla/TouchEvents.h"
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using namespace mozilla;
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using namespace mozilla::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 : nsEventListenerManager::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 != nsEventListenerManager::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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// nsEventTargetChainItem represents a single item in the event target chain.
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class nsEventTargetChainItem
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{
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private:
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nsEventTargetChainItem(EventTarget* aTarget);
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public:
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nsEventTargetChainItem()
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: mFlags(0), mItemFlags(0)
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{
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}
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static nsEventTargetChainItem* Create(nsTArray<nsEventTargetChainItem>& aChain,
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EventTarget* aTarget,
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nsEventTargetChainItem* 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()) nsEventTargetChainItem(aTarget);
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}
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static void DestroyLast(nsTArray<nsEventTargetChainItem>& aChain,
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nsEventTargetChainItem* 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<nsEventTargetChainItem>& aChain,
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nsEventChainPostVisitor& aVisitor,
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nsDispatchingCallback* 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 nsEventTargetChainItem.
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*/
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nsresult PreHandleEvent(nsEventChainPreVisitor& 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 nsEventListenerManager::HandleEvent().
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*/
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nsresult HandleEvent(nsEventChainPostVisitor& 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 NS_OK;
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}
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if (!mManager) {
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if (!MayHaveListenerManager() && !aCd.MayHaveNewListenerManager()) {
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return NS_OK;
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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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return NS_OK;
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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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nsresult PostHandleEvent(nsEventChainPostVisitor& 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<nsEventListenerManager> mManager;
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};
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nsEventTargetChainItem::nsEventTargetChainItem(EventTarget* aTarget)
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: mTarget(aTarget), mFlags(0), mItemFlags(0)
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{
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MOZ_ASSERT(!aTarget || mTarget == aTarget->GetTargetForEventTargetChain());
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}
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nsresult
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nsEventTargetChainItem::PreHandleEvent(nsEventChainPreVisitor& aVisitor)
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{
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aVisitor.Reset();
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nsresult rv = 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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return rv;
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}
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nsresult
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nsEventTargetChainItem::PostHandleEvent(nsEventChainPostVisitor& 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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return NS_OK;
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}
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void
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nsEventTargetChainItem::HandleEventTargetChain(
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nsTArray<nsEventTargetChainItem>& aChain,
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nsEventChainPostVisitor& aVisitor,
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nsDispatchingCallback* 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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nsEventTargetChainItem& 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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nsEventTargetChainItem& 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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nsEventTargetChainItem& 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<nsEventTargetChainItem>* sCachedMainThreadChain = nullptr;
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void
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NS_ShutdownEventTargetChainRecycler()
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{
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delete sCachedMainThreadChain;
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sCachedMainThreadChain = nullptr;
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}
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nsEventTargetChainItem*
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EventTargetChainItemForChromeTarget(nsTArray<nsEventTargetChainItem>& aChain,
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nsINode* aNode,
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nsEventTargetChainItem* aChild = nullptr)
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{
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if (!aNode->IsInDoc()) {
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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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nsEventTargetChainItem* etci =
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nsEventTargetChainItem::Create(aChain,
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piTarget->GetTargetForEventTargetChain(),
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aChild);
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if (!etci->IsValid()) {
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nsEventTargetChainItem::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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nsEventDispatcher::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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nsDispatchingCallback* aCallback,
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nsCOMArray<EventTarget>* aTargets)
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{
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PROFILER_LABEL("nsEventDispatcher", "Dispatch");
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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<nsEventTargetChainItem> chain;
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if (cd.IsMainThread()) {
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if (!sCachedMainThreadChain) {
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sCachedMainThreadChain = new nsTArray<nsEventTargetChainItem>();
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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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nsEventTargetChainItem* targetEtci =
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nsEventTargetChainItem::Create(chain, target->GetTargetForEventTargetChain());
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MOZ_ASSERT(&chain[0] == targetEtci);
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if (!targetEtci->IsValid()) {
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nsEventTargetChainItem::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 {
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// XXX But if the target is already set, use that. This is a hack
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// for the 'load', 'beforeunload' and 'unload' events,
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// which are dispatched to |window| but have document as their target.
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//
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// Make sure that the event target points to the right object.
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aEvent->target = aEvent->target->GetTargetForEventTargetChain();
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NS_ENSURE_STATE(aEvent->target);
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}
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if (retargeted) {
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aEvent->originalTarget =
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aEvent->originalTarget->GetTargetForEventTargetChain();
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NS_ENSURE_STATE(aEvent->originalTarget);
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}
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else {
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aEvent->originalTarget = aEvent->target;
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(aEvent->originalTarget);
|
|
bool isInAnon = (content && content->IsInAnonymousSubtree());
|
|
|
|
aEvent->mFlags.mIsBeingDispatched = true;
|
|
|
|
// Create visitor object and start event dispatching.
|
|
// PreHandleEvent for the original target.
|
|
nsEventStatus status = aEventStatus ? *aEventStatus : nsEventStatus_eIgnore;
|
|
nsEventChainPreVisitor 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.
|
|
nsEventTargetChainItem::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);
|
|
nsEventTargetChainItem* topEtci = targetEtci;
|
|
targetEtci = nullptr;
|
|
while (preVisitor.mParentTarget) {
|
|
EventTarget* parentTarget = preVisitor.mParentTarget;
|
|
nsEventTargetChainItem* parentEtci =
|
|
nsEventTargetChainItem::Create(chain, preVisitor.mParentTarget, topEtci);
|
|
if (!parentEtci->IsValid()) {
|
|
nsEventTargetChainItem::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 {
|
|
nsEventTargetChainItem::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.
|
|
nsEventChainPostVisitor postVisitor(preVisitor);
|
|
nsEventTargetChainItem::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, nsEventTargetChainItem objects are deleted when the chain goes out of
|
|
// the scope.
|
|
|
|
aEvent->mFlags.mIsBeingDispatched = false;
|
|
aEvent->mFlags.mDispatchedAtLeastOnce = true;
|
|
|
|
if (!externalDOMEvent && preVisitor.mDOMEvent) {
|
|
// An nsDOMEvent 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
|
|
nsEventDispatcher::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 nsEventDispatcher::Dispatch(aTarget, aPresContext, innerEvent,
|
|
aDOMEvent, aEventStatus);
|
|
} else if (aEvent) {
|
|
return nsEventDispatcher::Dispatch(aTarget, aPresContext, aEvent,
|
|
aDOMEvent, aEventStatus);
|
|
}
|
|
return NS_ERROR_ILLEGAL_VALUE;
|
|
}
|
|
|
|
/* static */ nsresult
|
|
nsEventDispatcher::CreateEvent(mozilla::dom::EventTarget* aOwner,
|
|
nsPresContext* aPresContext,
|
|
WidgetEvent* aEvent,
|
|
const nsAString& aEventType,
|
|
nsIDOMEvent** aDOMEvent)
|
|
{
|
|
*aDOMEvent = nullptr;
|
|
|
|
if (aEvent) {
|
|
switch(aEvent->eventStructType) {
|
|
case NS_MUTATION_EVENT:
|
|
return NS_NewDOMMutationEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsMutationEvent());
|
|
case NS_GUI_EVENT:
|
|
case NS_SCROLLPORT_EVENT:
|
|
case NS_UI_EVENT:
|
|
return NS_NewDOMUIEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsGUIEvent());
|
|
case NS_SCROLLAREA_EVENT:
|
|
return NS_NewDOMScrollAreaEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsScrollAreaEvent());
|
|
case NS_KEY_EVENT:
|
|
return NS_NewDOMKeyboardEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsKeyboardEvent());
|
|
case NS_COMPOSITION_EVENT:
|
|
return NS_NewDOMCompositionEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsCompositionEvent());
|
|
case NS_MOUSE_EVENT:
|
|
return NS_NewDOMMouseEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsMouseEvent());
|
|
case NS_FOCUS_EVENT:
|
|
return NS_NewDOMFocusEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsFocusEvent());
|
|
case NS_MOUSE_SCROLL_EVENT:
|
|
return NS_NewDOMMouseScrollEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsMouseScrollEvent());
|
|
case NS_WHEEL_EVENT:
|
|
return NS_NewDOMWheelEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsWheelEvent());
|
|
case NS_DRAG_EVENT:
|
|
return NS_NewDOMDragEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsDragEvent());
|
|
case NS_TEXT_EVENT:
|
|
return NS_NewDOMTextEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsTextEvent());
|
|
case NS_CLIPBOARD_EVENT:
|
|
return NS_NewDOMClipboardEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsClipboardEvent());
|
|
case NS_SVGZOOM_EVENT:
|
|
return NS_NewDOMSVGZoomEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsGUIEvent());
|
|
case NS_SMIL_TIME_EVENT:
|
|
return NS_NewDOMTimeEvent(aDOMEvent, aOwner, aPresContext, aEvent);
|
|
|
|
case NS_COMMAND_EVENT:
|
|
return NS_NewDOMCommandEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsCommandEvent());
|
|
case NS_SIMPLE_GESTURE_EVENT:
|
|
return NS_NewDOMSimpleGestureEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsSimpleGestureEvent());
|
|
case NS_POINTER_EVENT:
|
|
return NS_NewDOMPointerEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsPointerEvent());
|
|
case NS_TOUCH_EVENT:
|
|
return NS_NewDOMTouchEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsTouchEvent());
|
|
case NS_TRANSITION_EVENT:
|
|
return NS_NewDOMTransitionEvent(aDOMEvent, aOwner, aPresContext,
|
|
aEvent->AsTransitionEvent());
|
|
case NS_ANIMATION_EVENT:
|
|
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"))
|
|
return NS_NewDOMCompositionEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("mutationevent") ||
|
|
aEventType.LowerCaseEqualsLiteral("mutationevents"))
|
|
return NS_NewDOMMutationEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("textevent") ||
|
|
aEventType.LowerCaseEqualsLiteral("textevents"))
|
|
return NS_NewDOMTextEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("popupblockedevents"))
|
|
return NS_NewDOMPopupBlockedEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("deviceorientationevent"))
|
|
return NS_NewDOMDeviceOrientationEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
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("elementreplace"))
|
|
return NS_NewDOMElementReplaceEvent(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);
|
|
if (aEventType.LowerCaseEqualsLiteral("pagetransition"))
|
|
return NS_NewDOMPageTransitionEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("domtransaction"))
|
|
return NS_NewDOMDOMTransactionEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("scrollareaevent"))
|
|
return NS_NewDOMScrollAreaEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("popstateevent"))
|
|
return NS_NewDOMPopStateEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("mozaudioavailableevent"))
|
|
return NS_NewDOMAudioAvailableEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("closeevent"))
|
|
return NS_NewDOMCloseEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("touchevent") &&
|
|
nsDOMTouchEvent::PrefEnabled())
|
|
return NS_NewDOMTouchEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("hashchangeevent"))
|
|
return NS_NewDOMHashChangeEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("customevent"))
|
|
return NS_NewDOMCustomEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("mozsmsevent"))
|
|
return NS_NewDOMMozSmsEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("mozmmsevent"))
|
|
return NS_NewDOMMozMmsEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
if (aEventType.LowerCaseEqualsLiteral("storageevent")) {
|
|
return NS_NewDOMStorageEvent(aDOMEvent, aOwner, aPresContext, nullptr);
|
|
}
|
|
// NEW EVENT TYPES SHOULD NOT BE ADDED HERE; THEY SHOULD USE ONLY EVENT
|
|
// CONSTRUCTORS
|
|
|
|
return NS_ERROR_DOM_NOT_SUPPORTED_ERR;
|
|
}
|