1232 lines
41 KiB
C++
1232 lines
41 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "nsPresContext.h"
|
|
#include "nsContentUtils.h"
|
|
#include "nsError.h"
|
|
#include <new>
|
|
#include "nsIContent.h"
|
|
#include "nsIDocument.h"
|
|
#include "nsINode.h"
|
|
#include "nsPIDOMWindow.h"
|
|
#include "AnimationEvent.h"
|
|
#include "BeforeAfterKeyboardEvent.h"
|
|
#include "BeforeUnloadEvent.h"
|
|
#include "ClipboardEvent.h"
|
|
#include "CommandEvent.h"
|
|
#include "CompositionEvent.h"
|
|
#include "DataContainerEvent.h"
|
|
#include "DeviceMotionEvent.h"
|
|
#include "DragEvent.h"
|
|
#include "GeckoProfiler.h"
|
|
#include "KeyboardEvent.h"
|
|
#include "mozilla/ContentEvents.h"
|
|
#include "mozilla/dom/CloseEvent.h"
|
|
#include "mozilla/dom/CustomEvent.h"
|
|
#include "mozilla/dom/DeviceOrientationEvent.h"
|
|
#include "mozilla/dom/EventTarget.h"
|
|
#include "mozilla/dom/FocusEvent.h"
|
|
#include "mozilla/dom/HashChangeEvent.h"
|
|
#include "mozilla/dom/InputEvent.h"
|
|
#include "mozilla/dom/MessageEvent.h"
|
|
#include "mozilla/dom/MouseScrollEvent.h"
|
|
#include "mozilla/dom/MutationEvent.h"
|
|
#include "mozilla/dom/NotifyPaintEvent.h"
|
|
#include "mozilla/dom/PageTransitionEvent.h"
|
|
#include "mozilla/dom/PointerEvent.h"
|
|
#include "mozilla/dom/PopStateEvent.h"
|
|
#include "mozilla/dom/ScrollAreaEvent.h"
|
|
#include "mozilla/dom/SimpleGestureEvent.h"
|
|
#include "mozilla/dom/StorageEvent.h"
|
|
#include "mozilla/dom/SVGZoomEvent.h"
|
|
#include "mozilla/dom/TimeEvent.h"
|
|
#include "mozilla/dom/TouchEvent.h"
|
|
#include "mozilla/dom/TransitionEvent.h"
|
|
#include "mozilla/dom/WheelEvent.h"
|
|
#include "mozilla/dom/WorkerPrivate.h"
|
|
#include "mozilla/dom/XULCommandEvent.h"
|
|
#include "mozilla/EventDispatcher.h"
|
|
#include "mozilla/EventListenerManager.h"
|
|
#include "mozilla/InternalMutationEvent.h"
|
|
#include "mozilla/ipc/MessageChannel.h"
|
|
#include "mozilla/MiscEvents.h"
|
|
#include "mozilla/MouseEvents.h"
|
|
#include "mozilla/Telemetry.h"
|
|
#include "mozilla/TextEvents.h"
|
|
#include "mozilla/TouchEvents.h"
|
|
#include "mozilla/Unused.h"
|
|
|
|
#ifdef MOZ_TASK_TRACER
|
|
#include "GeckoTaskTracer.h"
|
|
#include "mozilla/dom/Element.h"
|
|
using namespace mozilla::tasktracer;
|
|
#endif
|
|
|
|
namespace mozilla {
|
|
|
|
using namespace dom;
|
|
|
|
class ELMCreationDetector
|
|
{
|
|
public:
|
|
ELMCreationDetector()
|
|
// We can do this optimization only in the main thread.
|
|
: mNonMainThread(!NS_IsMainThread())
|
|
, mInitialCount(mNonMainThread ?
|
|
0 : EventListenerManager::sMainThreadCreatedCount)
|
|
{
|
|
}
|
|
|
|
bool MayHaveNewListenerManager()
|
|
{
|
|
return mNonMainThread ||
|
|
mInitialCount != EventListenerManager::sMainThreadCreatedCount;
|
|
}
|
|
|
|
bool IsMainThread()
|
|
{
|
|
return !mNonMainThread;
|
|
}
|
|
|
|
private:
|
|
bool mNonMainThread;
|
|
uint32_t mInitialCount;
|
|
};
|
|
|
|
static bool IsEventTargetChrome(EventTarget* aEventTarget,
|
|
nsIDocument** aDocument = nullptr)
|
|
{
|
|
if (aDocument) {
|
|
*aDocument = nullptr;
|
|
}
|
|
|
|
if (NS_WARN_IF(!aEventTarget)) {
|
|
return false;
|
|
}
|
|
|
|
nsCOMPtr<nsIDocument> doc = do_QueryInterface(aEventTarget);
|
|
if (!doc) {
|
|
nsCOMPtr<nsINode> node = do_QueryInterface(aEventTarget);
|
|
if (node) {
|
|
doc = node->OwnerDoc();
|
|
} else {
|
|
nsCOMPtr<nsPIDOMWindowInner> window = do_QueryInterface(aEventTarget);
|
|
if (!window) {
|
|
return false;
|
|
}
|
|
doc = window->GetExtantDoc();
|
|
}
|
|
if (!doc) {
|
|
return false;
|
|
}
|
|
}
|
|
bool isChrome = nsContentUtils::IsChromeDoc(doc);
|
|
if (aDocument) {
|
|
doc.swap(*aDocument);
|
|
}
|
|
return isChrome;
|
|
}
|
|
|
|
// EventTargetChainItem represents a single item in the event target chain.
|
|
class EventTargetChainItem
|
|
{
|
|
private:
|
|
explicit EventTargetChainItem(EventTarget* aTarget);
|
|
public:
|
|
EventTargetChainItem()
|
|
: mItemFlags(0)
|
|
{
|
|
}
|
|
|
|
static EventTargetChainItem* Create(nsTArray<EventTargetChainItem>& aChain,
|
|
EventTarget* aTarget,
|
|
EventTargetChainItem* aChild = nullptr)
|
|
{
|
|
// The last item which can handle the event must be aChild.
|
|
MOZ_ASSERT(GetLastCanHandleEventTarget(aChain) == aChild);
|
|
return new (aChain.AppendElement()) EventTargetChainItem(aTarget);
|
|
}
|
|
|
|
static void DestroyLast(nsTArray<EventTargetChainItem>& aChain,
|
|
EventTargetChainItem* aItem)
|
|
{
|
|
uint32_t lastIndex = aChain.Length() - 1;
|
|
MOZ_ASSERT(&aChain[lastIndex] == aItem);
|
|
aChain.RemoveElementAt(lastIndex);
|
|
}
|
|
|
|
static EventTargetChainItem* GetFirstCanHandleEventTarget(
|
|
nsTArray<EventTargetChainItem>& aChain)
|
|
{
|
|
return &aChain[GetFirstCanHandleEventTargetIdx(aChain)];
|
|
}
|
|
|
|
static uint32_t GetFirstCanHandleEventTargetIdx(nsTArray<EventTargetChainItem>& aChain)
|
|
{
|
|
// aChain[i].PreHandleEventOnly() = true only when the target element wants
|
|
// PreHandleEvent and set mCanHandle=false. So we find the first element
|
|
// which can handle the event.
|
|
for (uint32_t i = 0; i < aChain.Length(); ++i) {
|
|
if (!aChain[i].PreHandleEventOnly()) {
|
|
return i;
|
|
}
|
|
}
|
|
MOZ_ASSERT(false);
|
|
return 0;
|
|
}
|
|
|
|
static EventTargetChainItem* GetLastCanHandleEventTarget(
|
|
nsTArray<EventTargetChainItem>& aChain)
|
|
{
|
|
// Fine the last item which can handle the event.
|
|
for (int32_t i = aChain.Length() - 1; i >= 0; --i) {
|
|
if (!aChain[i].PreHandleEventOnly()) {
|
|
return &aChain[i];
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
bool IsValid()
|
|
{
|
|
NS_WARNING_ASSERTION(!!(mTarget), "Event target is not valid!");
|
|
return !!(mTarget);
|
|
}
|
|
|
|
EventTarget* GetNewTarget()
|
|
{
|
|
return mNewTarget;
|
|
}
|
|
|
|
void SetNewTarget(EventTarget* aNewTarget)
|
|
{
|
|
mNewTarget = aNewTarget;
|
|
}
|
|
|
|
void SetForceContentDispatch(bool aForce)
|
|
{
|
|
mFlags.mForceContentDispatch = aForce;
|
|
}
|
|
|
|
bool ForceContentDispatch()
|
|
{
|
|
return mFlags.mForceContentDispatch;
|
|
}
|
|
|
|
void SetWantsWillHandleEvent(bool aWants)
|
|
{
|
|
mFlags.mWantsWillHandleEvent = aWants;
|
|
}
|
|
|
|
bool WantsWillHandleEvent()
|
|
{
|
|
return mFlags.mWantsWillHandleEvent;
|
|
}
|
|
|
|
void SetWantsPreHandleEvent(bool aWants)
|
|
{
|
|
mFlags.mWantsPreHandleEvent = aWants;
|
|
}
|
|
|
|
bool WantsPreHandleEvent()
|
|
{
|
|
return mFlags.mWantsPreHandleEvent;
|
|
}
|
|
|
|
void SetPreHandleEventOnly(bool aWants)
|
|
{
|
|
mFlags.mPreHandleEventOnly = aWants;
|
|
}
|
|
|
|
bool PreHandleEventOnly()
|
|
{
|
|
return mFlags.mPreHandleEventOnly;
|
|
}
|
|
|
|
void SetRootOfClosedTree(bool aSet)
|
|
{
|
|
mFlags.mRootOfClosedTree = aSet;
|
|
}
|
|
|
|
bool IsRootOfClosedTree()
|
|
{
|
|
return mFlags.mRootOfClosedTree;
|
|
}
|
|
|
|
void SetIsSlotInClosedTree(bool aSet)
|
|
{
|
|
mFlags.mIsSlotInClosedTree = aSet;
|
|
}
|
|
|
|
bool IsSlotInClosedTree()
|
|
{
|
|
return mFlags.mIsSlotInClosedTree;
|
|
}
|
|
|
|
void SetIsChromeHandler(bool aSet)
|
|
{
|
|
mFlags.mIsChromeHandler = aSet;
|
|
}
|
|
|
|
bool IsChromeHandler()
|
|
{
|
|
return mFlags.mIsChromeHandler;
|
|
}
|
|
|
|
void SetMayHaveListenerManager(bool aMayHave)
|
|
{
|
|
mFlags.mMayHaveManager = aMayHave;
|
|
}
|
|
|
|
bool MayHaveListenerManager()
|
|
{
|
|
return mFlags.mMayHaveManager;
|
|
}
|
|
|
|
EventTarget* CurrentTarget()
|
|
{
|
|
return mTarget;
|
|
}
|
|
|
|
/**
|
|
* Dispatches event through the event target chain.
|
|
* Handles capture, target and bubble phases both in default
|
|
* and system event group and calls also PostHandleEvent for each
|
|
* item in the chain.
|
|
*/
|
|
static void HandleEventTargetChain(nsTArray<EventTargetChainItem>& aChain,
|
|
EventChainPostVisitor& aVisitor,
|
|
EventDispatchingCallback* aCallback,
|
|
ELMCreationDetector& aCd);
|
|
|
|
/**
|
|
* Resets aVisitor object and calls GetEventTargetParent.
|
|
* Copies mItemFlags and mItemData to the current EventTargetChainItem.
|
|
*/
|
|
void GetEventTargetParent(EventChainPreVisitor& aVisitor);
|
|
|
|
/**
|
|
* Calls PreHandleEvent for those items which called SetWantsPreHandleEvent.
|
|
*/
|
|
void PreHandleEvent(EventChainVisitor& aVisitor);
|
|
|
|
/**
|
|
* If the current item in the event target chain has an event listener
|
|
* manager, this method calls EventListenerManager::HandleEvent().
|
|
*/
|
|
void HandleEvent(EventChainPostVisitor& aVisitor,
|
|
ELMCreationDetector& aCd)
|
|
{
|
|
if (WantsWillHandleEvent()) {
|
|
mTarget->WillHandleEvent(aVisitor);
|
|
}
|
|
if (aVisitor.mEvent->PropagationStopped()) {
|
|
return;
|
|
}
|
|
if (aVisitor.mEvent->mFlags.mOnlySystemGroupDispatchInContent &&
|
|
!aVisitor.mEvent->mFlags.mInSystemGroup &&
|
|
!IsCurrentTargetChrome()) {
|
|
return;
|
|
}
|
|
if (!mManager) {
|
|
if (!MayHaveListenerManager() && !aCd.MayHaveNewListenerManager()) {
|
|
return;
|
|
}
|
|
mManager = mTarget->GetExistingListenerManager();
|
|
}
|
|
if (mManager) {
|
|
NS_ASSERTION(aVisitor.mEvent->mCurrentTarget == nullptr,
|
|
"CurrentTarget should be null!");
|
|
mManager->HandleEvent(aVisitor.mPresContext, aVisitor.mEvent,
|
|
&aVisitor.mDOMEvent,
|
|
CurrentTarget(),
|
|
&aVisitor.mEventStatus);
|
|
NS_ASSERTION(aVisitor.mEvent->mCurrentTarget == nullptr,
|
|
"CurrentTarget should be null!");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Copies mItemFlags and mItemData to aVisitor and calls PostHandleEvent.
|
|
*/
|
|
void PostHandleEvent(EventChainPostVisitor& aVisitor);
|
|
|
|
private:
|
|
nsCOMPtr<EventTarget> mTarget;
|
|
|
|
class EventTargetChainFlags
|
|
{
|
|
public:
|
|
explicit EventTargetChainFlags()
|
|
{
|
|
SetRawFlags(0);
|
|
}
|
|
// Cached flags for each EventTargetChainItem which are set when calling
|
|
// GetEventTargetParent to create event target chain. They are used to
|
|
// manage or speedup event dispatching.
|
|
bool mForceContentDispatch : 1;
|
|
bool mWantsWillHandleEvent : 1;
|
|
bool mMayHaveManager : 1;
|
|
bool mChechedIfChrome : 1;
|
|
bool mIsChromeContent : 1;
|
|
bool mWantsPreHandleEvent : 1;
|
|
bool mPreHandleEventOnly : 1;
|
|
bool mRootOfClosedTree : 1;
|
|
bool mIsSlotInClosedTree : 1;
|
|
bool mIsChromeHandler : 1;
|
|
private:
|
|
typedef uint32_t RawFlags;
|
|
void SetRawFlags(RawFlags aRawFlags)
|
|
{
|
|
static_assert(sizeof(EventTargetChainFlags) <= sizeof(RawFlags),
|
|
"EventTargetChainFlags must not be bigger than the RawFlags");
|
|
memcpy(this, &aRawFlags, sizeof(EventTargetChainFlags));
|
|
}
|
|
} mFlags;
|
|
|
|
uint16_t mItemFlags;
|
|
nsCOMPtr<nsISupports> mItemData;
|
|
// Event retargeting must happen whenever mNewTarget is non-null.
|
|
nsCOMPtr<EventTarget> mNewTarget;
|
|
// Cache mTarget's event listener manager.
|
|
RefPtr<EventListenerManager> mManager;
|
|
|
|
bool IsCurrentTargetChrome()
|
|
{
|
|
if (!mFlags.mChechedIfChrome) {
|
|
mFlags.mChechedIfChrome = true;
|
|
if (IsEventTargetChrome(mTarget)) {
|
|
mFlags.mIsChromeContent = true;
|
|
}
|
|
}
|
|
return mFlags.mIsChromeContent;
|
|
}
|
|
};
|
|
|
|
EventTargetChainItem::EventTargetChainItem(EventTarget* aTarget)
|
|
: mTarget(aTarget)
|
|
, mItemFlags(0)
|
|
{
|
|
MOZ_ASSERT(!aTarget || mTarget == aTarget->GetTargetForEventTargetChain());
|
|
}
|
|
|
|
void
|
|
EventTargetChainItem::GetEventTargetParent(EventChainPreVisitor& aVisitor)
|
|
{
|
|
aVisitor.Reset();
|
|
Unused << mTarget->GetEventTargetParent(aVisitor);
|
|
SetForceContentDispatch(aVisitor.mForceContentDispatch);
|
|
SetWantsWillHandleEvent(aVisitor.mWantsWillHandleEvent);
|
|
SetMayHaveListenerManager(aVisitor.mMayHaveListenerManager);
|
|
SetWantsPreHandleEvent(aVisitor.mWantsPreHandleEvent);
|
|
SetPreHandleEventOnly(aVisitor.mWantsPreHandleEvent && !aVisitor.mCanHandle);
|
|
SetRootOfClosedTree(aVisitor.mRootOfClosedTree);
|
|
mItemFlags = aVisitor.mItemFlags;
|
|
mItemData = aVisitor.mItemData;
|
|
}
|
|
|
|
void
|
|
EventTargetChainItem::PreHandleEvent(EventChainVisitor& aVisitor)
|
|
{
|
|
if (!WantsPreHandleEvent()) {
|
|
return;
|
|
}
|
|
aVisitor.mItemFlags = mItemFlags;
|
|
aVisitor.mItemData = mItemData;
|
|
Unused << mTarget->PreHandleEvent(aVisitor);
|
|
}
|
|
|
|
void
|
|
EventTargetChainItem::PostHandleEvent(EventChainPostVisitor& aVisitor)
|
|
{
|
|
aVisitor.mItemFlags = mItemFlags;
|
|
aVisitor.mItemData = mItemData;
|
|
mTarget->PostHandleEvent(aVisitor);
|
|
}
|
|
|
|
void
|
|
EventTargetChainItem::HandleEventTargetChain(
|
|
nsTArray<EventTargetChainItem>& aChain,
|
|
EventChainPostVisitor& aVisitor,
|
|
EventDispatchingCallback* aCallback,
|
|
ELMCreationDetector& aCd)
|
|
{
|
|
// Save the target so that it can be restored later.
|
|
nsCOMPtr<EventTarget> firstTarget = aVisitor.mEvent->mTarget;
|
|
uint32_t chainLength = aChain.Length();
|
|
uint32_t firstCanHandleEventTargetIdx =
|
|
EventTargetChainItem::GetFirstCanHandleEventTargetIdx(aChain);
|
|
|
|
// Capture
|
|
aVisitor.mEvent->mFlags.mInCapturePhase = true;
|
|
aVisitor.mEvent->mFlags.mInBubblingPhase = false;
|
|
for (uint32_t i = chainLength - 1; i > firstCanHandleEventTargetIdx; --i) {
|
|
EventTargetChainItem& item = aChain[i];
|
|
if (item.PreHandleEventOnly()) {
|
|
continue;
|
|
}
|
|
if ((!aVisitor.mEvent->mFlags.mNoContentDispatch ||
|
|
item.ForceContentDispatch()) &&
|
|
!aVisitor.mEvent->PropagationStopped()) {
|
|
item.HandleEvent(aVisitor, aCd);
|
|
}
|
|
|
|
if (item.GetNewTarget()) {
|
|
// item is at anonymous boundary. Need to retarget for the child items.
|
|
for (uint32_t j = i; j > 0; --j) {
|
|
uint32_t childIndex = j - 1;
|
|
EventTarget* newTarget = aChain[childIndex].GetNewTarget();
|
|
if (newTarget) {
|
|
aVisitor.mEvent->mTarget = newTarget;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Target
|
|
aVisitor.mEvent->mFlags.mInBubblingPhase = true;
|
|
EventTargetChainItem& targetItem = aChain[firstCanHandleEventTargetIdx];
|
|
if (!aVisitor.mEvent->PropagationStopped() &&
|
|
(!aVisitor.mEvent->mFlags.mNoContentDispatch ||
|
|
targetItem.ForceContentDispatch())) {
|
|
targetItem.HandleEvent(aVisitor, aCd);
|
|
}
|
|
if (aVisitor.mEvent->mFlags.mInSystemGroup) {
|
|
targetItem.PostHandleEvent(aVisitor);
|
|
}
|
|
|
|
// Bubble
|
|
aVisitor.mEvent->mFlags.mInCapturePhase = false;
|
|
for (uint32_t i = firstCanHandleEventTargetIdx + 1; i < chainLength; ++i) {
|
|
EventTargetChainItem& item = aChain[i];
|
|
if (item.PreHandleEventOnly()) {
|
|
continue;
|
|
}
|
|
EventTarget* newTarget = item.GetNewTarget();
|
|
if (newTarget) {
|
|
// Item is at anonymous boundary. Need to retarget for the current item
|
|
// and for parent items.
|
|
aVisitor.mEvent->mTarget = newTarget;
|
|
}
|
|
|
|
if (aVisitor.mEvent->mFlags.mBubbles || newTarget) {
|
|
if ((!aVisitor.mEvent->mFlags.mNoContentDispatch ||
|
|
item.ForceContentDispatch()) &&
|
|
!aVisitor.mEvent->PropagationStopped()) {
|
|
item.HandleEvent(aVisitor, aCd);
|
|
}
|
|
if (aVisitor.mEvent->mFlags.mInSystemGroup) {
|
|
item.PostHandleEvent(aVisitor);
|
|
}
|
|
}
|
|
}
|
|
aVisitor.mEvent->mFlags.mInBubblingPhase = false;
|
|
|
|
if (!aVisitor.mEvent->mFlags.mInSystemGroup) {
|
|
// Dispatch to the system event group. Make sure to clear the
|
|
// STOP_DISPATCH flag since this resets for each event group.
|
|
aVisitor.mEvent->mFlags.mPropagationStopped = false;
|
|
aVisitor.mEvent->mFlags.mImmediatePropagationStopped = false;
|
|
|
|
// Setting back the original target of the event.
|
|
aVisitor.mEvent->mTarget = aVisitor.mEvent->mOriginalTarget;
|
|
|
|
// Special handling if PresShell (or some other caller)
|
|
// used a callback object.
|
|
if (aCallback) {
|
|
aCallback->HandleEvent(aVisitor);
|
|
}
|
|
|
|
// Retarget for system event group (which does the default handling too).
|
|
// Setting back the target which was used also for default event group.
|
|
aVisitor.mEvent->mTarget = firstTarget;
|
|
aVisitor.mEvent->mFlags.mInSystemGroup = true;
|
|
HandleEventTargetChain(aChain,
|
|
aVisitor,
|
|
aCallback,
|
|
aCd);
|
|
aVisitor.mEvent->mFlags.mInSystemGroup = false;
|
|
|
|
// After dispatch, clear all the propagation flags so that
|
|
// system group listeners don't affect to the event.
|
|
aVisitor.mEvent->mFlags.mPropagationStopped = false;
|
|
aVisitor.mEvent->mFlags.mImmediatePropagationStopped = false;
|
|
}
|
|
}
|
|
|
|
static nsTArray<EventTargetChainItem>* sCachedMainThreadChain = nullptr;
|
|
|
|
/* static */ void
|
|
EventDispatcher::Shutdown()
|
|
{
|
|
delete sCachedMainThreadChain;
|
|
sCachedMainThreadChain = nullptr;
|
|
}
|
|
|
|
EventTargetChainItem*
|
|
EventTargetChainItemForChromeTarget(nsTArray<EventTargetChainItem>& aChain,
|
|
nsINode* aNode,
|
|
EventTargetChainItem* aChild = nullptr)
|
|
{
|
|
if (!aNode->IsInComposedDoc()) {
|
|
return nullptr;
|
|
}
|
|
nsPIDOMWindowInner* win = aNode->OwnerDoc()->GetInnerWindow();
|
|
EventTarget* piTarget = win ? win->GetParentTarget() : nullptr;
|
|
NS_ENSURE_TRUE(piTarget, nullptr);
|
|
|
|
EventTargetChainItem* etci =
|
|
EventTargetChainItem::Create(aChain,
|
|
piTarget->GetTargetForEventTargetChain(),
|
|
aChild);
|
|
if (!etci->IsValid()) {
|
|
EventTargetChainItem::DestroyLast(aChain, etci);
|
|
return nullptr;
|
|
}
|
|
return etci;
|
|
}
|
|
|
|
/* static */ EventTargetChainItem*
|
|
MayRetargetToChromeIfCanNotHandleEvent(
|
|
nsTArray<EventTargetChainItem>& aChain, EventChainPreVisitor& aPreVisitor,
|
|
EventTargetChainItem* aTargetEtci, EventTargetChainItem* aChildEtci,
|
|
nsINode* aContent)
|
|
{
|
|
if (!aPreVisitor.mWantsPreHandleEvent) {
|
|
// Keep EventTargetChainItem if we need to call PreHandleEvent on it.
|
|
EventTargetChainItem::DestroyLast(aChain, aTargetEtci);
|
|
}
|
|
if (aPreVisitor.mAutomaticChromeDispatch && aContent) {
|
|
// Event target couldn't handle the event. Try to propagate to chrome.
|
|
EventTargetChainItem* chromeTargetEtci =
|
|
EventTargetChainItemForChromeTarget(aChain, aContent, aChildEtci);
|
|
if (chromeTargetEtci) {
|
|
chromeTargetEtci->GetEventTargetParent(aPreVisitor);
|
|
return chromeTargetEtci;
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
/* static */ nsresult
|
|
EventDispatcher::Dispatch(nsISupports* aTarget,
|
|
nsPresContext* aPresContext,
|
|
WidgetEvent* aEvent,
|
|
nsIDOMEvent* aDOMEvent,
|
|
nsEventStatus* aEventStatus,
|
|
EventDispatchingCallback* aCallback,
|
|
nsTArray<EventTarget*>* aTargets)
|
|
{
|
|
PROFILER_LABEL("EventDispatcher", "Dispatch",
|
|
js::ProfileEntry::Category::EVENTS);
|
|
|
|
NS_ASSERTION(aEvent, "Trying to dispatch without WidgetEvent!");
|
|
NS_ENSURE_TRUE(!aEvent->mFlags.mIsBeingDispatched,
|
|
NS_ERROR_DOM_INVALID_STATE_ERR);
|
|
NS_ASSERTION(!aTargets || !aEvent->mMessage, "Wrong parameters!");
|
|
|
|
// If we're dispatching an already created DOMEvent object, make
|
|
// sure it is initialized!
|
|
// If aTargets is non-null, the event isn't going to be dispatched.
|
|
NS_ENSURE_TRUE(aEvent->mMessage || !aDOMEvent || aTargets,
|
|
NS_ERROR_DOM_INVALID_STATE_ERR);
|
|
|
|
#ifdef MOZ_TASK_TRACER
|
|
{
|
|
if (aDOMEvent) {
|
|
nsAutoString eventType;
|
|
aDOMEvent->GetType(eventType);
|
|
|
|
nsCOMPtr<Element> element = do_QueryInterface(aTarget);
|
|
nsAutoString elementId;
|
|
nsAutoString elementTagName;
|
|
if (element) {
|
|
element->GetId(elementId);
|
|
element->GetTagName(elementTagName);
|
|
}
|
|
AddLabel("Event [%s] dispatched at target [id:%s tag:%s]",
|
|
NS_ConvertUTF16toUTF8(eventType).get(),
|
|
NS_ConvertUTF16toUTF8(elementId).get(),
|
|
NS_ConvertUTF16toUTF8(elementTagName).get());
|
|
}
|
|
}
|
|
#endif
|
|
|
|
nsCOMPtr<EventTarget> target = do_QueryInterface(aTarget);
|
|
|
|
bool retargeted = false;
|
|
|
|
if (aEvent->mFlags.mRetargetToNonNativeAnonymous) {
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(target);
|
|
if (content && content->IsInNativeAnonymousSubtree()) {
|
|
nsCOMPtr<EventTarget> newTarget =
|
|
do_QueryInterface(content->FindFirstNonChromeOnlyAccessContent());
|
|
NS_ENSURE_STATE(newTarget);
|
|
|
|
aEvent->mOriginalTarget = target;
|
|
target = newTarget;
|
|
retargeted = true;
|
|
}
|
|
}
|
|
|
|
if (aEvent->mFlags.mOnlyChromeDispatch) {
|
|
nsCOMPtr<nsIDocument> doc;
|
|
if (!IsEventTargetChrome(target, getter_AddRefs(doc)) && doc) {
|
|
nsPIDOMWindowInner* win = doc->GetInnerWindow();
|
|
// If we can't dispatch the event to chrome, do nothing.
|
|
EventTarget* piTarget = win ? win->GetParentTarget() : nullptr;
|
|
if (!piTarget) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Set the target to be the original dispatch target,
|
|
aEvent->mTarget = target;
|
|
// but use chrome event handler or TabChildGlobal for event target chain.
|
|
target = piTarget;
|
|
} else if (NS_WARN_IF(!doc)) {
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
if (aEvent->mMessage != eVoidEvent &&
|
|
!nsContentUtils::IsSafeToRunScript()) {
|
|
nsresult rv = NS_ERROR_FAILURE;
|
|
if (target->GetContextForEventHandlers(&rv) ||
|
|
NS_FAILED(rv)) {
|
|
nsCOMPtr<nsINode> node = do_QueryInterface(target);
|
|
if (node && nsContentUtils::IsChromeDoc(node->OwnerDoc())) {
|
|
NS_WARNING("Fix the caller!");
|
|
} else {
|
|
NS_ERROR("This is unsafe! Fix the caller!");
|
|
}
|
|
}
|
|
}
|
|
|
|
if (aDOMEvent) {
|
|
WidgetEvent* innerEvent = aDOMEvent->WidgetEventPtr();
|
|
NS_ASSERTION(innerEvent == aEvent,
|
|
"The inner event of aDOMEvent is not the same as aEvent!");
|
|
}
|
|
#endif
|
|
|
|
nsresult rv = NS_OK;
|
|
bool externalDOMEvent = !!(aDOMEvent);
|
|
|
|
// If we have a PresContext, make sure it doesn't die before
|
|
// event dispatching is finished.
|
|
RefPtr<nsPresContext> kungFuDeathGrip(aPresContext);
|
|
|
|
ELMCreationDetector cd;
|
|
nsTArray<EventTargetChainItem> chain;
|
|
if (cd.IsMainThread()) {
|
|
if (!sCachedMainThreadChain) {
|
|
sCachedMainThreadChain = new nsTArray<EventTargetChainItem>();
|
|
}
|
|
chain.SwapElements(*sCachedMainThreadChain);
|
|
chain.SetCapacity(128);
|
|
}
|
|
|
|
// Create the event target chain item for the event target.
|
|
EventTargetChainItem* targetEtci =
|
|
EventTargetChainItem::Create(chain, target->GetTargetForEventTargetChain());
|
|
if (!targetEtci->IsValid()) {
|
|
EventTargetChainItem::DestroyLast(chain, targetEtci);
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Make sure that nsIDOMEvent::target and nsIDOMEvent::originalTarget
|
|
// point to the last item in the chain.
|
|
if (!aEvent->mTarget) {
|
|
// Note, CurrentTarget() points always to the object returned by
|
|
// GetTargetForEventTargetChain().
|
|
aEvent->mTarget = targetEtci->CurrentTarget();
|
|
} 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->mTarget = aEvent->mTarget->GetTargetForEventTargetChain();
|
|
NS_ENSURE_STATE(aEvent->mTarget);
|
|
}
|
|
|
|
if (retargeted) {
|
|
aEvent->mOriginalTarget =
|
|
aEvent->mOriginalTarget->GetTargetForEventTargetChain();
|
|
NS_ENSURE_STATE(aEvent->mOriginalTarget);
|
|
}
|
|
else {
|
|
aEvent->mOriginalTarget = aEvent->mTarget;
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(aEvent->mOriginalTarget);
|
|
bool isInAnon = (content && (content->IsInAnonymousSubtree() ||
|
|
content->IsInShadowTree()));
|
|
|
|
aEvent->mFlags.mIsBeingDispatched = true;
|
|
|
|
// Create visitor object and start event dispatching.
|
|
// GetEventTargetParent for the original target.
|
|
nsEventStatus status = aEventStatus ? *aEventStatus : nsEventStatus_eIgnore;
|
|
EventChainPreVisitor preVisitor(aPresContext, aEvent, aDOMEvent, status,
|
|
isInAnon);
|
|
targetEtci->GetEventTargetParent(preVisitor);
|
|
|
|
if (!preVisitor.mCanHandle) {
|
|
targetEtci = MayRetargetToChromeIfCanNotHandleEvent(chain, preVisitor,
|
|
targetEtci, nullptr,
|
|
content);
|
|
}
|
|
if (!preVisitor.mCanHandle) {
|
|
// The original target and chrome target (mAutomaticChromeDispatch=true)
|
|
// can not handle the event but we still have to call their PreHandleEvent.
|
|
for (uint32_t i = 0; i < chain.Length(); ++i) {
|
|
chain[i].PreHandleEvent(preVisitor);
|
|
}
|
|
} else {
|
|
// At least the original target can handle the event.
|
|
// Setting the retarget to the |target| simplifies retargeting code.
|
|
nsCOMPtr<EventTarget> t = do_QueryInterface(aEvent->mTarget);
|
|
targetEtci->SetNewTarget(t);
|
|
EventTargetChainItem* topEtci = targetEtci;
|
|
targetEtci = nullptr;
|
|
while (preVisitor.GetParentTarget()) {
|
|
EventTarget* parentTarget = preVisitor.GetParentTarget();
|
|
EventTargetChainItem* parentEtci =
|
|
EventTargetChainItem::Create(chain, parentTarget, topEtci);
|
|
if (!parentEtci->IsValid()) {
|
|
EventTargetChainItem::DestroyLast(chain, parentEtci);
|
|
rv = NS_ERROR_FAILURE;
|
|
break;
|
|
}
|
|
|
|
parentEtci->SetIsSlotInClosedTree(preVisitor.mParentIsSlotInClosedTree);
|
|
parentEtci->SetIsChromeHandler(preVisitor.mParentIsChromeHandler);
|
|
|
|
// Item needs event retargetting.
|
|
if (preVisitor.mEventTargetAtParent) {
|
|
// Need to set the target of the event
|
|
// so that also the next retargeting works.
|
|
preVisitor.mEvent->mTarget = preVisitor.mEventTargetAtParent;
|
|
parentEtci->SetNewTarget(preVisitor.mEventTargetAtParent);
|
|
}
|
|
|
|
parentEtci->GetEventTargetParent(preVisitor);
|
|
if (preVisitor.mCanHandle) {
|
|
topEtci = parentEtci;
|
|
} else {
|
|
nsCOMPtr<nsINode> disabledTarget = do_QueryInterface(parentTarget);
|
|
parentEtci = MayRetargetToChromeIfCanNotHandleEvent(chain,
|
|
preVisitor,
|
|
parentEtci,
|
|
topEtci,
|
|
disabledTarget);
|
|
if (parentEtci && preVisitor.mCanHandle) {
|
|
EventTargetChainItem* item =
|
|
EventTargetChainItem::GetFirstCanHandleEventTarget(chain);
|
|
item->SetNewTarget(parentTarget);
|
|
topEtci = parentEtci;
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if (NS_SUCCEEDED(rv)) {
|
|
if (aTargets) {
|
|
aTargets->Clear();
|
|
uint32_t numTargets = chain.Length();
|
|
EventTarget** targets = aTargets->AppendElements(numTargets);
|
|
for (uint32_t i = 0; i < numTargets; ++i) {
|
|
targets[i] = chain[i].CurrentTarget()->GetTargetForDOMEvent();
|
|
}
|
|
} else {
|
|
// Event target chain is created. PreHandle the chain.
|
|
for (uint32_t i = 0; i < chain.Length(); ++i) {
|
|
chain[i].PreHandleEvent(preVisitor);
|
|
}
|
|
// Handle the chain.
|
|
EventChainPostVisitor postVisitor(preVisitor);
|
|
MOZ_RELEASE_ASSERT(!aEvent->mPath);
|
|
aEvent->mPath = &chain;
|
|
EventTargetChainItem::HandleEventTargetChain(chain, postVisitor,
|
|
aCallback, cd);
|
|
|
|
aEvent->mPath = nullptr;
|
|
|
|
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->WidgetEventPtr();
|
|
NS_ENSURE_TRUE(innerEvent, NS_ERROR_ILLEGAL_VALUE);
|
|
|
|
bool dontResetTrusted = false;
|
|
if (innerEvent->mFlags.mDispatchedAtLeastOnce) {
|
|
innerEvent->mTarget = nullptr;
|
|
innerEvent->mOriginalTarget = nullptr;
|
|
} else {
|
|
aDOMEvent->GetIsTrusted(&dontResetTrusted);
|
|
}
|
|
|
|
if (!dontResetTrusted) {
|
|
//Check security state to determine if dispatcher is trusted
|
|
bool trusted = NS_IsMainThread() ? nsContentUtils::LegacyIsCallerChromeOrNativeCode()
|
|
: mozilla::dom::workers::IsCurrentThreadRunningChromeWorker();
|
|
aDOMEvent->SetTrusted(trusted);
|
|
}
|
|
|
|
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 */ already_AddRefed<dom::Event>
|
|
EventDispatcher::CreateEvent(EventTarget* aOwner,
|
|
nsPresContext* aPresContext,
|
|
WidgetEvent* aEvent,
|
|
const nsAString& aEventType)
|
|
{
|
|
if (aEvent) {
|
|
switch(aEvent->mClass) {
|
|
case eMutationEventClass:
|
|
return NS_NewDOMMutationEvent(aOwner, aPresContext,
|
|
aEvent->AsMutationEvent());
|
|
case eGUIEventClass:
|
|
case eScrollPortEventClass:
|
|
case eUIEventClass:
|
|
return NS_NewDOMUIEvent(aOwner, aPresContext, aEvent->AsGUIEvent());
|
|
case eScrollAreaEventClass:
|
|
return NS_NewDOMScrollAreaEvent(aOwner, aPresContext,
|
|
aEvent->AsScrollAreaEvent());
|
|
case eKeyboardEventClass:
|
|
return NS_NewDOMKeyboardEvent(aOwner, aPresContext,
|
|
aEvent->AsKeyboardEvent());
|
|
case eBeforeAfterKeyboardEventClass:
|
|
return NS_NewDOMBeforeAfterKeyboardEvent(aOwner, aPresContext,
|
|
aEvent->AsBeforeAfterKeyboardEvent());
|
|
case eCompositionEventClass:
|
|
return NS_NewDOMCompositionEvent(aOwner, aPresContext,
|
|
aEvent->AsCompositionEvent());
|
|
case eMouseEventClass:
|
|
return NS_NewDOMMouseEvent(aOwner, aPresContext, aEvent->AsMouseEvent());
|
|
case eFocusEventClass:
|
|
return NS_NewDOMFocusEvent(aOwner, aPresContext, aEvent->AsFocusEvent());
|
|
case eMouseScrollEventClass:
|
|
return NS_NewDOMMouseScrollEvent(aOwner, aPresContext,
|
|
aEvent->AsMouseScrollEvent());
|
|
case eWheelEventClass:
|
|
return NS_NewDOMWheelEvent(aOwner, aPresContext, aEvent->AsWheelEvent());
|
|
case eEditorInputEventClass:
|
|
return NS_NewDOMInputEvent(aOwner, aPresContext,
|
|
aEvent->AsEditorInputEvent());
|
|
case eDragEventClass:
|
|
return NS_NewDOMDragEvent(aOwner, aPresContext, aEvent->AsDragEvent());
|
|
case eClipboardEventClass:
|
|
return NS_NewDOMClipboardEvent(aOwner, aPresContext,
|
|
aEvent->AsClipboardEvent());
|
|
case eSVGZoomEventClass:
|
|
return NS_NewDOMSVGZoomEvent(aOwner, aPresContext,
|
|
aEvent->AsSVGZoomEvent());
|
|
case eSMILTimeEventClass:
|
|
return NS_NewDOMTimeEvent(aOwner, aPresContext,
|
|
aEvent->AsSMILTimeEvent());
|
|
case eCommandEventClass:
|
|
return NS_NewDOMCommandEvent(aOwner, aPresContext,
|
|
aEvent->AsCommandEvent());
|
|
case eSimpleGestureEventClass:
|
|
return NS_NewDOMSimpleGestureEvent(aOwner, aPresContext,
|
|
aEvent->AsSimpleGestureEvent());
|
|
case ePointerEventClass:
|
|
return NS_NewDOMPointerEvent(aOwner, aPresContext,
|
|
aEvent->AsPointerEvent());
|
|
case eTouchEventClass:
|
|
return NS_NewDOMTouchEvent(aOwner, aPresContext, aEvent->AsTouchEvent());
|
|
case eTransitionEventClass:
|
|
return NS_NewDOMTransitionEvent(aOwner, aPresContext,
|
|
aEvent->AsTransitionEvent());
|
|
case eAnimationEventClass:
|
|
return NS_NewDOMAnimationEvent(aOwner, aPresContext,
|
|
aEvent->AsAnimationEvent());
|
|
default:
|
|
// For all other types of events, create a vanilla event object.
|
|
return NS_NewDOMEvent(aOwner, aPresContext, aEvent);
|
|
}
|
|
}
|
|
|
|
// And if we didn't get an event, check the type argument.
|
|
|
|
if (aEventType.LowerCaseEqualsLiteral("mouseevent")) {
|
|
return NS_NewDOMMouseEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("mouseevents")) {
|
|
return NS_NewDOMMouseEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("popupevents")) {
|
|
return NS_NewDOMMouseEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("mousescrollevents")) {
|
|
return NS_NewDOMMouseScrollEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("dragevent")) {
|
|
return NS_NewDOMDragEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("dragevents")) {
|
|
return NS_NewDOMDragEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("keyboardevent")) {
|
|
return NS_NewDOMKeyboardEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("keyevents")) {
|
|
return NS_NewDOMKeyboardEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("compositionevent")) {
|
|
return NS_NewDOMCompositionEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("textevent")) {
|
|
return NS_NewDOMCompositionEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("textevents")) {
|
|
return NS_NewDOMCompositionEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("mutationevent")) {
|
|
return NS_NewDOMMutationEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("mutationevents")) {
|
|
return NS_NewDOMMutationEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("deviceorientationevent")) {
|
|
DeviceOrientationEventInit init;
|
|
RefPtr<Event> event =
|
|
DeviceOrientationEvent::Constructor(aOwner, EmptyString(), init);
|
|
event->MarkUninitialized();
|
|
return event.forget();
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("devicemotionevent")) {
|
|
return NS_NewDOMDeviceMotionEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("uievent")) {
|
|
return NS_NewDOMUIEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("uievents")) {
|
|
return NS_NewDOMUIEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("event")) {
|
|
return NS_NewDOMEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("events")) {
|
|
return NS_NewDOMEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("htmlevents")) {
|
|
return NS_NewDOMEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("svgevent")) {
|
|
return NS_NewDOMEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("svgevents")) {
|
|
return NS_NewDOMEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("svgzoomevent")) {
|
|
return NS_NewDOMSVGZoomEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("svgzoomevents")) {
|
|
return NS_NewDOMSVGZoomEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("timeevent")) {
|
|
return NS_NewDOMTimeEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("timeevents")) {
|
|
return NS_NewDOMTimeEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("xulcommandevent")) {
|
|
return NS_NewDOMXULCommandEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("xulcommandevents")) {
|
|
return NS_NewDOMXULCommandEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("commandevent")) {
|
|
return NS_NewDOMCommandEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("commandevents")) {
|
|
return NS_NewDOMCommandEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("datacontainerevent")) {
|
|
return NS_NewDOMDataContainerEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("datacontainerevents")) {
|
|
return NS_NewDOMDataContainerEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("messageevent")) {
|
|
RefPtr<Event> event = new MessageEvent(aOwner, aPresContext, nullptr);
|
|
return event.forget();
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("notifypaintevent")) {
|
|
return NS_NewDOMNotifyPaintEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("simplegestureevent")) {
|
|
return NS_NewDOMSimpleGestureEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("beforeunloadevent")) {
|
|
return NS_NewDOMBeforeUnloadEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
// XXXkhuey this is broken
|
|
if (aEventType.LowerCaseEqualsLiteral("pagetransition")) {
|
|
PageTransitionEventInit init;
|
|
RefPtr<Event> event =
|
|
PageTransitionEvent::Constructor(aOwner, EmptyString(), init);
|
|
event->MarkUninitialized();
|
|
return event.forget();
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("scrollareaevent")) {
|
|
return NS_NewDOMScrollAreaEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
// 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);
|
|
RefPtr<Event> event =
|
|
PopStateEvent::Constructor(aOwner, EmptyString(), init);
|
|
event->MarkUninitialized();
|
|
return event.forget();
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("touchevent") &&
|
|
TouchEvent::PrefEnabled(nsContentUtils::GetDocShellForEventTarget(aOwner))) {
|
|
return NS_NewDOMTouchEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("hashchangeevent")) {
|
|
HashChangeEventInit init;
|
|
RefPtr<Event> event =
|
|
HashChangeEvent::Constructor(aOwner, EmptyString(), init);
|
|
event->MarkUninitialized();
|
|
return event.forget();
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("customevent")) {
|
|
return NS_NewDOMCustomEvent(aOwner, aPresContext, nullptr);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("storageevent")) {
|
|
return NS_NewDOMStorageEvent(aOwner);
|
|
}
|
|
if (aEventType.LowerCaseEqualsLiteral("focusevent")) {
|
|
RefPtr<Event> event = NS_NewDOMFocusEvent(aOwner, aPresContext, nullptr);
|
|
event->MarkUninitialized();
|
|
return event.forget();
|
|
}
|
|
|
|
// NEW EVENT TYPES SHOULD NOT BE ADDED HERE; THEY SHOULD USE ONLY EVENT
|
|
// CONSTRUCTORS
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
// static
|
|
void
|
|
EventDispatcher::GetComposedPathFor(WidgetEvent* aEvent,
|
|
nsTArray<RefPtr<EventTarget>>& aPath)
|
|
{
|
|
nsTArray<EventTargetChainItem>* path = aEvent->mPath;
|
|
if (!path || path->IsEmpty() || !aEvent->mCurrentTarget) {
|
|
return;
|
|
}
|
|
|
|
EventTarget* currentTarget =
|
|
aEvent->mCurrentTarget->GetTargetForEventTargetChain();
|
|
if (!currentTarget) {
|
|
return;
|
|
}
|
|
|
|
AutoTArray<EventTarget*, 128> reversedComposedPath;
|
|
bool hasSeenCurrentTarget = false;
|
|
uint32_t hiddenSubtreeLevel = 0;
|
|
for (uint32_t i = path->Length(); i; ) {
|
|
--i;
|
|
|
|
EventTargetChainItem& item = path->ElementAt(i);
|
|
if (item.PreHandleEventOnly()) {
|
|
continue;
|
|
}
|
|
|
|
if (!hasSeenCurrentTarget && currentTarget == item.CurrentTarget()) {
|
|
hasSeenCurrentTarget = true;
|
|
} else if (hasSeenCurrentTarget && item.IsRootOfClosedTree()) {
|
|
++hiddenSubtreeLevel;
|
|
}
|
|
|
|
if (hiddenSubtreeLevel == 0) {
|
|
reversedComposedPath.AppendElement(item.CurrentTarget());
|
|
}
|
|
|
|
if (item.IsSlotInClosedTree() && hiddenSubtreeLevel > 0) {
|
|
--hiddenSubtreeLevel;
|
|
}
|
|
|
|
if (item.IsChromeHandler()) {
|
|
if (hasSeenCurrentTarget) {
|
|
// The current behavior is to include only EventTargets from
|
|
// either chrome side of event path or content side, not from both.
|
|
break;
|
|
}
|
|
|
|
// Need to start all over to collect the composed path on content side.
|
|
reversedComposedPath.Clear();
|
|
}
|
|
}
|
|
|
|
aPath.SetCapacity(reversedComposedPath.Length());
|
|
for (uint32_t i = reversedComposedPath.Length(); i; ) {
|
|
--i;
|
|
aPath.AppendElement(reversedComposedPath[i]->GetTargetForDOMEvent());
|
|
}
|
|
}
|
|
|
|
} // namespace mozilla
|