diff options
Diffstat (limited to 'dom/events/EventStateManager.cpp')
| -rw-r--r-- | dom/events/EventStateManager.cpp | 243 |
1 files changed, 188 insertions, 55 deletions
diff --git a/dom/events/EventStateManager.cpp b/dom/events/EventStateManager.cpp index 0ae756211b..3c24cdb30a 100644 --- a/dom/events/EventStateManager.cpp +++ b/dom/events/EventStateManager.cpp @@ -227,6 +227,9 @@ static nsINode* GetCommonAncestorForMouseUp( return parent; } +LazyLogModule sMouseBoundaryLog("MouseBoundaryEvents"); +LazyLogModule sPointerBoundaryLog("PointerBoundaryEvents"); + /******************************************************************/ /* mozilla::UITimerCallback */ /******************************************************************/ @@ -264,8 +267,8 @@ UITimerCallback::Notify(nsITimer* aTimer) { if (XRE_IsParentProcess()) { hal::BatteryInformation batteryInfo; hal::GetCurrentBatteryInformation(&batteryInfo); - glean::power_battery::percentage_when_user_active.AccumulateSamples( - {uint64_t(batteryInfo.level() * 100)}); + glean::power_battery::percentage_when_user_active.AccumulateSingleSample( + uint64_t(batteryInfo.level() * 100)); } } mPreviousCount = gMouseOrKeyboardEventCounter; @@ -282,10 +285,6 @@ UITimerCallback::GetName(nsACString& aName) { /* mozilla::OverOutElementsWrapper */ /******************************************************************/ -OverOutElementsWrapper::OverOutElementsWrapper() : mLastOverFrame(nullptr) {} - -OverOutElementsWrapper::~OverOutElementsWrapper() = default; - NS_IMPL_CYCLE_COLLECTION(OverOutElementsWrapper, mDeepestEnterEventTarget, mDispatchingOverEventTarget, mDispatchingOutOrDeepestLeaveEventTarget) @@ -296,6 +295,116 @@ NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(OverOutElementsWrapper) NS_INTERFACE_MAP_ENTRY(nsISupports) NS_INTERFACE_MAP_END +void OverOutElementsWrapper::ContentRemoved(nsIContent& aContent) { + if (!mDeepestEnterEventTarget) { + return; + } + + if (!nsContentUtils::ContentIsFlattenedTreeDescendantOf( + mDeepestEnterEventTarget, &aContent)) { + return; + } + + LogModule* const logModule = mType == BoundaryEventType::Mouse + ? sMouseBoundaryLog + : sPointerBoundaryLog; + + if (!StaticPrefs:: + dom_events_mouse_pointer_boundary_keep_enter_targets_after_over_target_removed()) { + MOZ_LOG(logModule, LogLevel::Info, + ("The last \"over\" event target (%p) is removed", + mDeepestEnterEventTarget.get())); + mDeepestEnterEventTarget = nullptr; + return; + } + + if (mDispatchingOverEventTarget && + (mDeepestEnterEventTarget == mDispatchingOverEventTarget || + nsContentUtils::ContentIsFlattenedTreeDescendantOf( + mDispatchingOverEventTarget, &aContent))) { + if (mDispatchingOverEventTarget == + mDispatchingOutOrDeepestLeaveEventTarget) { + MOZ_LOG(logModule, LogLevel::Info, + ("The dispatching \"%s\" event target (%p) is removed", + mDeepestEnterEventTargetIsOverEventTarget ? "out" : "leave", + mDispatchingOutOrDeepestLeaveEventTarget.get())); + mDispatchingOutOrDeepestLeaveEventTarget = nullptr; + } + MOZ_LOG(logModule, LogLevel::Info, + ("The dispatching \"over\" event target (%p) is removed", + mDispatchingOverEventTarget.get())); + mDispatchingOverEventTarget = nullptr; + } + if (mDispatchingOutOrDeepestLeaveEventTarget && + (mDeepestEnterEventTarget == mDispatchingOutOrDeepestLeaveEventTarget || + nsContentUtils::ContentIsFlattenedTreeDescendantOf( + mDispatchingOutOrDeepestLeaveEventTarget, &aContent))) { + MOZ_LOG(logModule, LogLevel::Info, + ("The dispatching \"%s\" event target (%p) is removed", + mDeepestEnterEventTargetIsOverEventTarget ? "out" : "leave", + mDispatchingOutOrDeepestLeaveEventTarget.get())); + mDispatchingOutOrDeepestLeaveEventTarget = nullptr; + } + MOZ_LOG(logModule, LogLevel::Info, + ("The last \"%s\" event target (%p) is removed and now the last " + "deepest enter target becomes %s(%p)", + mDeepestEnterEventTargetIsOverEventTarget ? "over" : "enter", + mDeepestEnterEventTarget.get(), + aContent.GetFlattenedTreeParent() + ? ToString(*aContent.GetFlattenedTreeParent()).c_str() + : "nullptr", + aContent.GetFlattenedTreeParent())); + mDeepestEnterEventTarget = aContent.GetFlattenedTreeParent(); + mDeepestEnterEventTargetIsOverEventTarget = false; +} + +void OverOutElementsWrapper::DidDispatchOverAndEnterEvent( + nsIContent* aOriginalOverTargetInComposedDoc) { + mDispatchingOverEventTarget = nullptr; + + // Pointer Events define that once the `pointerover` event target is removed + // from the tree, `pointerout` should not be fired on that and the closest + // connected ancestor at the target removal should be kept as the deepest + // `pointerleave` target. Therefore, we don't need the special handling for + // `pointerout` event target if the last `pointerover` target is temporarily + // removed from the tree. + if (mType == OverOutElementsWrapper::BoundaryEventType::Pointer) { + return; + } + + // Assume that the caller checks whether aOriginalOverTarget is in the + // original document. If we don't enable the strict mouse/pointer event + // boundary event dispatching by the pref (see below), + // mDeepestEnterEventTarget is set to nullptr when the last "over" target is + // removed. Therefore, we cannot check whether aOriginalOverTarget is in the + // original document here. + if (!aOriginalOverTargetInComposedDoc) { + return; + } + MOZ_ASSERT_IF(mDeepestEnterEventTarget, + mDeepestEnterEventTarget->GetComposedDoc() == + aOriginalOverTargetInComposedDoc->GetComposedDoc()); + // If the "mouseover" event target is removed temporarily while we're + // dispatching "mouseover" and "mouseenter" events and the target gets back + // under the deepest enter event target, we should restore the "mouseover" + // target. + if ((!StaticPrefs:: + dom_events_mouse_pointer_boundary_keep_enter_targets_after_over_target_removed() && + !mDeepestEnterEventTarget) || + (!mDeepestEnterEventTargetIsOverEventTarget && mDeepestEnterEventTarget && + nsContentUtils::ContentIsFlattenedTreeDescendantOf( + aOriginalOverTargetInComposedDoc, mDeepestEnterEventTarget))) { + mDeepestEnterEventTarget = aOriginalOverTargetInComposedDoc; + mDeepestEnterEventTargetIsOverEventTarget = true; + LogModule* const logModule = mType == BoundaryEventType::Mouse + ? sMouseBoundaryLog + : sPointerBoundaryLog; + MOZ_LOG(logModule, LogLevel::Info, + ("The \"over\" event target (%p) is restored", + mDeepestEnterEventTarget.get())); + } +} + /******************************************************************/ /* mozilla::EventStateManager */ /******************************************************************/ @@ -2169,8 +2278,8 @@ void EventStateManager::MaybeFirePointerCancel(WidgetInputEvent* aEvent) { WidgetPointerEvent event(aTouchEvent->IsTrusted(), ePointerCancel, aTouchEvent->mWidget); - PointerEventHandler::InitPointerEventFromTouch( - event, *aTouchEvent, *aTouchEvent->mTouches[0], true); + PointerEventHandler::InitPointerEventFromTouch(event, *aTouchEvent, + *aTouchEvent->mTouches[0]); event.convertToPointer = false; presShell->HandleEventWithTarget(&event, targetFrame, content, &status); @@ -3453,6 +3562,13 @@ void EventStateManager::PostHandleKeyboardEvent( } } +static bool NeedsActiveContentChange(const WidgetMouseEvent* aMouseEvent) { + // If the mouse event is a synthesized mouse event due to a touch, do + // not set/clear the activation state. Element activation is handled by APZ. + return !aMouseEvent || + aMouseEvent->mInputSource != MouseEvent_Binding::MOZ_SOURCE_TOUCH; +} + nsresult EventStateManager::PostHandleEvent(nsPresContext* aPresContext, WidgetEvent* aEvent, nsIFrame* aTargetFrame, @@ -3696,7 +3812,9 @@ nsresult EventStateManager::PostHandleEvent(nsPresContext* aPresContext, } // XXX Why do we always set this is active? Active window may be changed // by a mousedown event listener. - SetActiveManager(this, activeContent); + if (NeedsActiveContentChange(mouseEvent)) { + SetActiveManager(this, activeContent); + } } break; case ePointerCancel: case ePointerUp: { @@ -3724,10 +3842,7 @@ nsresult EventStateManager::PostHandleEvent(nsPresContext* aPresContext, PresShell::ReleaseCapturingContent(); WidgetMouseEvent* mouseUpEvent = aEvent->AsMouseEvent(); - // If the mouseup event is a synthesized mouse event due to a touch, do - // not clear the activation state. Element activation is handled by APZ. - if (!mouseUpEvent || mouseUpEvent->mInputSource != - dom::MouseEvent_Binding::MOZ_SOURCE_TOUCH) { + if (NeedsActiveContentChange(mouseUpEvent)) { ClearGlobalActiveContent(this); } if (mouseUpEvent && EventCausesClickEvents(*mouseUpEvent)) { @@ -4803,6 +4918,10 @@ class EnterLeaveDispatcher { void EventStateManager::NotifyMouseOut(WidgetMouseEvent* aMouseEvent, nsIContent* aMovingInto) { + const bool isPointer = aMouseEvent->mClass == ePointerEventClass; + LogModule* const logModule = + isPointer ? sPointerBoundaryLog : sMouseBoundaryLog; + RefPtr<OverOutElementsWrapper> wrapper = GetWrapperByEventID(aMouseEvent); // If there is no deepest "leave" event target, that means the last "over" @@ -4816,6 +4935,11 @@ void EventStateManager::NotifyMouseOut(WidgetMouseEvent* aMouseEvent, return; } + MOZ_LOG(logModule, LogLevel::Info, + ("NotifyMouseOut: the source event is %s (IsReal()=%s)", + ToChar(aMouseEvent->mMessage), + aMouseEvent->IsReal() ? "true" : "false")); + // XXX If a content node is a container of remove content, it should be // replaced with them and its children should not be visible. Therefore, // if the deepest "enter" target is not the last "over" target, i.e., the @@ -4829,6 +4953,10 @@ void EventStateManager::NotifyMouseOut(WidgetMouseEvent* aMouseEvent, if (RefPtr<nsPresContext> presContext = docshell->GetPresContext()) { EventStateManager* kidESM = presContext->EventStateManager(); // Not moving into any element in this subdocument + MOZ_LOG(logModule, LogLevel::Info, + ("Notifying child EventStateManager (%p) of \"out\" " + "event...", + kidESM)); kidESM->NotifyMouseOut(aMouseEvent, nullptr); } } @@ -4846,7 +4974,6 @@ void EventStateManager::NotifyMouseOut(WidgetMouseEvent* aMouseEvent, // hover state itself, and we have optimizations for hover switching between // two nearby elements both deep in the DOM tree that would be defeated by // switching the hover state to null here. - bool isPointer = aMouseEvent->mClass == ePointerEventClass; if (!aMovingInto && !isPointer) { // Unset :hover SetContentState(nullptr, ElementState::HOVER); @@ -4859,12 +4986,27 @@ void EventStateManager::NotifyMouseOut(WidgetMouseEvent* aMouseEvent, // "out" events hould be fired only when the deepest "leave" event target // is the last "over" event target. if (nsCOMPtr<nsIContent> outEventTarget = wrapper->GetOutEventTarget()) { + MOZ_LOG(logModule, LogLevel::Info, + ("Dispatching %s event to %s (%p)", + isPointer ? "ePointerOut" : "eMouseOut", + outEventTarget ? ToString(*outEventTarget).c_str() : "nullptr", + outEventTarget.get())); DispatchMouseOrPointerEvent(aMouseEvent, isPointer ? ePointerOut : eMouseOut, outEventTarget, aMovingInto); } + + MOZ_LOG(logModule, LogLevel::Info, + ("Dispatching %s event to %s (%p) and its ancestors", + isPointer ? "ePointerLeave" : "eMouseLeave", + wrapper->GetDeepestLeaveEventTarget() + ? ToString(*wrapper->GetDeepestLeaveEventTarget()).c_str() + : "nullptr", + wrapper->GetDeepestLeaveEventTarget())); leaveDispatcher.Dispatch(); + MOZ_LOG(logModule, LogLevel::Info, + ("Dispatched \"out\" and/or \"leave\" events")); wrapper->DidDispatchOutAndOrLeaveEvent(); } @@ -4884,6 +5026,10 @@ void EventStateManager::NotifyMouseOver(WidgetMouseEvent* aMouseEvent, nsIContent* aContent) { NS_ASSERTION(aContent, "Mouse must be over something"); + const bool isPointer = aMouseEvent->mClass == ePointerEventClass; + LogModule* const logModule = + isPointer ? sPointerBoundaryLog : sMouseBoundaryLog; + RefPtr<OverOutElementsWrapper> wrapper = GetWrapperByEventID(aMouseEvent); // If we have next "out" event target and it's the new "over" target, we don't @@ -4897,6 +5043,11 @@ void EventStateManager::NotifyMouseOver(WidgetMouseEvent* aMouseEvent, return; } + MOZ_LOG(logModule, LogLevel::Info, + ("NotifyMouseOver: the source event is %s (IsReal()=%s)", + ToChar(aMouseEvent->mMessage), + aMouseEvent->IsReal() ? "true" : "false")); + // Check to see if we're a subdocument and if so update the parent // document's ESM state to indicate that the mouse is over the // content associated with our subdocument. @@ -4906,6 +5057,10 @@ void EventStateManager::NotifyMouseOver(WidgetMouseEvent* aMouseEvent, if (PresShell* parentPresShell = parentDoc->GetPresShell()) { RefPtr<EventStateManager> parentESM = parentPresShell->GetPresContext()->EventStateManager(); + MOZ_LOG(logModule, LogLevel::Info, + ("Notifying parent EventStateManager (%p) of \"over\" " + "event...", + parentESM.get())); parentESM->NotifyMouseOver(aMouseEvent, docContent); } } @@ -4922,8 +5077,6 @@ void EventStateManager::NotifyMouseOver(WidgetMouseEvent* aMouseEvent, nsCOMPtr<nsIContent> deepestLeaveEventTarget = wrapper->GetDeepestLeaveEventTarget(); - bool isPointer = aMouseEvent->mClass == ePointerEventClass; - EnterLeaveDispatcher enterDispatcher(this, aContent, deepestLeaveEventTarget, aMouseEvent, isPointer ? ePointerEnter : eMouseEnter); @@ -4939,12 +5092,26 @@ void EventStateManager::NotifyMouseOver(WidgetMouseEvent* aMouseEvent, // Fire mouseover // XXX If aContent has already been removed from the DOM tree, what should we // do? At least, dispatching `mouseover` on it is odd. + MOZ_LOG(logModule, LogLevel::Info, + ("Dispatching %s event to %s (%p)", + isPointer ? "ePointerOver" : "eMoustOver", + aContent ? ToString(*aContent).c_str() : "nullptr", aContent)); wrapper->mLastOverFrame = DispatchMouseOrPointerEvent( aMouseEvent, isPointer ? ePointerOver : eMouseOver, aContent, deepestLeaveEventTarget); + + MOZ_LOG(logModule, LogLevel::Info, + ("Dispatching %s event to %s (%p) and its ancestors", + isPointer ? "ePointerEnter" : "eMouseEnter", + aContent ? ToString(*aContent).c_str() : "nullptr", aContent)); enterDispatcher.Dispatch(); - wrapper->DidDispatchOverAndEnterEvent(); + MOZ_LOG(logModule, LogLevel::Info, + ("Dispatched \"over\" and \"enter\" events (the original \"over\" " + "event target was in the document %p, and now in %p)", + aContent->GetComposedDoc(), mDocument.get())); + wrapper->DidDispatchOverAndEnterEvent( + aContent->GetComposedDoc() == mDocument ? aContent : nullptr); } // Returns the center point of the window's client area. This is @@ -5135,11 +5302,13 @@ OverOutElementsWrapper* EventStateManager::GetWrapperByEventID( if (!pointer) { MOZ_ASSERT(aEvent->AsMouseEvent() != nullptr); if (!mMouseEnterLeaveHelper) { - mMouseEnterLeaveHelper = new OverOutElementsWrapper(); + mMouseEnterLeaveHelper = new OverOutElementsWrapper( + OverOutElementsWrapper::BoundaryEventType::Mouse); } return mMouseEnterLeaveHelper; } - return mPointersEnterLeaveHelper.GetOrInsertNew(pointer->pointerId); + return mPointersEnterLeaveHelper.GetOrInsertNew( + pointer->pointerId, OverOutElementsWrapper::BoundaryEventType::Pointer); } /* static */ @@ -6895,40 +7064,4 @@ bool EventStateManager::WheelPrefs::IsOverOnePageScrollAllowedY( MIN_MULTIPLIER_VALUE_ALLOWING_OVER_ONE_PAGE_SCROLL; } -void OverOutElementsWrapper::ContentRemoved(nsIContent& aContent) { - if (!mDeepestEnterEventTarget) { - return; - } - - if (!nsContentUtils::ContentIsFlattenedTreeDescendantOf( - mDeepestEnterEventTarget, &aContent)) { - return; - } - - if (!StaticPrefs:: - dom_events_mouse_pointer_boundary_keep_enter_targets_after_over_target_removed()) { - mDeepestEnterEventTarget = nullptr; - return; - } - - if (mDispatchingOverEventTarget && - (mDeepestEnterEventTarget == mDispatchingOverEventTarget || - nsContentUtils::ContentIsFlattenedTreeDescendantOf( - mDispatchingOverEventTarget, &aContent))) { - if (mDispatchingOverEventTarget == - mDispatchingOutOrDeepestLeaveEventTarget) { - mDispatchingOutOrDeepestLeaveEventTarget = nullptr; - } - mDispatchingOverEventTarget = nullptr; - } - if (mDispatchingOutOrDeepestLeaveEventTarget && - (mDeepestEnterEventTarget == mDispatchingOutOrDeepestLeaveEventTarget || - nsContentUtils::ContentIsFlattenedTreeDescendantOf( - mDispatchingOutOrDeepestLeaveEventTarget, &aContent))) { - mDispatchingOutOrDeepestLeaveEventTarget = nullptr; - } - mDeepestEnterEventTarget = aContent.GetFlattenedTreeParent(); - mDeepestEnterEventTargetIsOverEventTarget = false; -} - } // namespace mozilla |