Masayuki Nakano
8461aba084
A single tap or a long press may cause compatibility mouse events, `mousemove`, `mousedown`, `mouseup`, then, `click` unless the target is changed during the sequence. Currently, we synthesize a mouse move event after a layout change or a scroll to dispatch mouse boundary events and update the `:hover` state. However, if the last mouse event is caused by a touch which does not support `:hover` state, it's odd to treat the new target as hovered. This patch prevents the synthesized mouse moves if the last mouse event is caused by a pointing device which does not support hover state unless the button state is active (e.g., the layout change at `mousedown` of a single tap should cause mouse boundary events before the following `mouseup`). I think that the compatibility `mouseup` event should reset the `:hover` state and dispatch mouse boundary events like `pointerup`. However, Chrome does not do that. Therefore, we should align the behavior to Chrome for the compatibility. Differential Revision: https://phabricator.services.mozilla.com/D309800
1651 lines
64 KiB
C++
1651 lines
64 KiB
C++
/* 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 "PointerEventHandler.h"
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#include "EventStateManager.h"
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#include "PointerEvent.h"
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#include "PointerLockManager.h"
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#include "mozilla/ConnectedAncestorTracker.h"
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#include "mozilla/PresShell.h"
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#include "mozilla/StaticPrefs_dom.h"
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#include "mozilla/StaticPrefs_ui.h"
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#include "mozilla/dom/BrowserChild.h"
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#include "mozilla/dom/BrowserParent.h"
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#include "mozilla/dom/Document.h"
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#include "mozilla/dom/DocumentInlines.h"
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#include "mozilla/dom/MouseEventBinding.h"
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#include "nsIContentInlines.h"
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#include "nsIFrame.h"
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#include "nsIWeakReferenceUtils.h"
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#include "nsRFPService.h"
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#include "nsUserCharacteristics.h"
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namespace mozilla {
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// MouseLocation logs the mouse location and when/where enqueued synthesized
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// mouse move is flushed. If you don't need all mouse location recording at
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// eMouseMove, you can use MouseLocation:3,sync. Then, it's logged once per
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// 50 times. Otherwise, if you need to log all eMouseMove locations, you can
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// use MouseLocation:5,sync.
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// Note that this is actually available only on debug builds for saving the
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// runtime cost on opt builds.
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LazyLogModule gLogMouseLocation("MouseLocation");
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// PointerLocation logs all pointer locations and when/where enqueued
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// synthesized pointer move is flushed. If you don't need all pointer location
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// recording at ePointerMove, you can use PointerLocation:3,sync. Then, it's
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// logged once per 50 times. Otherwise, if you need to log all ePointerMove
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// locations, you can use PointerLocation:5,sync.
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// Note that this is actually available only on debug builds for saving the
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// runtime cost on opt builds.
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LazyLogModule gLogPointerLocation("PointerLocation");
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// Log the updates of sActivePointersIds.
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LazyLogModule gLogActivePointers("ActivePointers");
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using namespace dom;
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Maybe<int32_t> PointerEventHandler::sSpoofedPointerId;
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StaticAutoPtr<PointerInfo> PointerEventHandler::sLastMouseInfo;
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StaticRefPtr<nsIWeakReference> PointerEventHandler::sLastMousePresShell;
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StaticRefPtr<nsIWeakReference> PointerEventHandler::sLastMouseWidget;
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Maybe<uint32_t> PointerEventHandler::sLastMousePointerId;
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Maybe<uint32_t> PointerEventHandler::sLastPointerId;
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// Keeps a map between pointerId and element that currently capturing pointer
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// with such pointerId. If pointerId is absent in this map then nobody is
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// capturing it. Additionally keep information about pending capturing content.
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static nsClassHashtable<nsUint32HashKey, PointerCaptureInfo>*
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sPointerCaptureList;
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// Keeps information about pointers such as pointerId, activeState, pointerType,
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// primaryState
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static nsClassHashtable<nsUint32HashKey, PointerInfo>* sActivePointersIds;
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const UniquePtr<PointerInfo>& PointerEventHandler::InsertOrUpdateActivePointer(
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uint32_t aPointerId, UniquePtr<PointerInfo>&& aNewPointerInfo,
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EventMessage aEventMessage, const char* aCallerName) {
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const bool logIt = [&]() {
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if (MOZ_LIKELY(!MOZ_LOG_TEST(gLogActivePointers, LogLevel::Info))) {
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return false;
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}
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const PointerInfo* prevPointerInfo = sActivePointersIds->Get(aPointerId);
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return !prevPointerInfo ||
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!prevPointerInfo->EqualsBasicPointerData(*aNewPointerInfo);
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}();
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const UniquePtr<PointerInfo>& pointerInfo =
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sActivePointersIds->InsertOrUpdate(
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aPointerId, std::forward<UniquePtr<PointerInfo>>(aNewPointerInfo));
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if (MOZ_UNLIKELY(logIt)) {
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MOZ_LOG(
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gLogActivePointers, LogLevel::Info,
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("InsertOrUpdate: { pointerId=%u, active: %s, inputSource: %s, "
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"primary: %s, fromTouchEvent: %s, synthesizedForTests: %s }, %s in "
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"%s",
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aPointerId, pointerInfo->mIsActive ? "Yes" : "No",
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InputSourceToString(pointerInfo->mInputSource).get(),
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pointerInfo->mIsPrimary ? "Yes" : "No",
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pointerInfo->mFromTouchEvent ? "Yes" : "No",
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pointerInfo->mIsSynthesizedForTests ? "Yes" : "No",
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ToChar(aEventMessage), aCallerName));
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}
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return pointerInfo;
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}
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void PointerEventHandler::RemoveActivePointer(uint32_t aPointerId,
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EventMessage aEventMessage,
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const char* aCallerName) {
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MOZ_ASSERT_IF(sLastPointerId, *sLastPointerId != aPointerId);
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sActivePointersIds->Remove(aPointerId);
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MOZ_LOG(
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gLogActivePointers, LogLevel::Info,
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("Remove: { pointerId=%u }, %s in %s, remaining %u pointers", aPointerId,
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ToChar(aEventMessage), aCallerName, sActivePointersIds->Count()));
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}
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// Keeps track of which BrowserParent requested pointer capture for a pointer
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// id.
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static nsTHashMap<nsUint32HashKey, BrowserParent*>*
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sPointerCaptureRemoteTargetTable = nullptr;
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// Keep the capturing element at dispatching the last pointer up event to
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// consider the following click, auxclick or contextmenu event target.
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static StaticRefPtr<nsIWeakReference>
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sPointerCapturingElementAtLastPointerUpEvent;
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/* static */
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void PointerEventHandler::InitializeStatics() {
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MOZ_ASSERT(!sPointerCaptureList, "InitializeStatics called multiple times!");
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sPointerCaptureList =
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new nsClassHashtable<nsUint32HashKey, PointerCaptureInfo>;
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sActivePointersIds = new nsClassHashtable<nsUint32HashKey, PointerInfo>;
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if (XRE_IsParentProcess()) {
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sPointerCaptureRemoteTargetTable =
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new nsTHashMap<nsUint32HashKey, BrowserParent*>;
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}
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}
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/* static */
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void PointerEventHandler::ReleaseStatics() {
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MOZ_ASSERT(sPointerCaptureList, "ReleaseStatics called without Initialize!");
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delete sPointerCaptureList;
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sPointerCaptureList = nullptr;
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delete sActivePointersIds;
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sActivePointersIds = nullptr;
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sPointerCapturingElementAtLastPointerUpEvent = nullptr;
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if (sPointerCaptureRemoteTargetTable) {
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MOZ_ASSERT(XRE_IsParentProcess());
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delete sPointerCaptureRemoteTargetTable;
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sPointerCaptureRemoteTargetTable = nullptr;
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}
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sLastMouseInfo = nullptr;
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sLastMousePresShell = nullptr;
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sLastMouseWidget = nullptr;
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sLastMousePointerId.reset();
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}
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/* static */
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bool PointerEventHandler::IsPointerEventImplicitCaptureForTouchEnabled() {
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return StaticPrefs::dom_w3c_pointer_events_implicit_capture();
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}
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/* static */
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bool PointerEventHandler::ShouldDispatchClickEventOnCapturingElement(
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const WidgetGUIEvent* aSourceEvent /* = nullptr */) {
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if (!StaticPrefs::
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dom_w3c_pointer_events_dispatch_click_on_pointer_capturing_element()) {
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return false;
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}
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if (!aSourceEvent ||
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!StaticPrefs::
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dom_w3c_pointer_events_dispatch_click_on_pointer_capturing_element_except_touch()) {
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return true;
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}
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MOZ_ASSERT(aSourceEvent->mMessage == eMouseUp ||
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aSourceEvent->mMessage == ePointerUp ||
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aSourceEvent->mMessage == eTouchEnd);
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// Pointer Events defines that `click` event's userEvent is the preceding
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// `pointerup`. However, Chrome does not follow treat it as so when the
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// `click` is caused by a tap. For the compatibility with Chrome, we should
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// stop comforming to the spec until Chrome conforms to that.
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if (aSourceEvent->mClass == eTouchEventClass) {
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return false;
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}
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const WidgetMouseEvent* const sourceMouseEvent = aSourceEvent->AsMouseEvent();
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return sourceMouseEvent &&
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sourceMouseEvent->mInputSource != MouseEvent_Binding::MOZ_SOURCE_TOUCH;
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}
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/* static */
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void PointerEventHandler::RecordPointerState(
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const nsPoint& aRefPoint, const WidgetMouseEvent& aMouseEvent) {
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MOZ_ASSERT_IF(aMouseEvent.mMessage == eMouseMove ||
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aMouseEvent.mMessage == ePointerMove,
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aMouseEvent.IsReal());
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PointerInfo* pointerInfo = sActivePointersIds->Get(aMouseEvent.pointerId);
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if (!pointerInfo) {
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// If there is no pointer info (i.e., no last pointer state too) and the
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// input device is not stationary or the caller wants to clear the last
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// state, we need to do nothing.
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if (!aMouseEvent.InputSourceSupportsHover() ||
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aRefPoint == nsPoint(NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE)) {
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return;
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}
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// If there is no PointerInfo, we need to add an inactive PointeInfo to
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// store the state.
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pointerInfo = InsertOrUpdateActivePointer(
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aMouseEvent.pointerId,
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MakeUnique<PointerInfo>(
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PointerInfo::Active::No, aMouseEvent.mInputSource,
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PointerInfo::Primary::Yes,
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PointerInfo::FromTouchEvent::No, nullptr, nullptr,
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static_cast<PointerInfo::SynthesizeForTests>(
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aMouseEvent.mFlags.mIsSynthesizedForTests)),
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aMouseEvent.mMessage, __func__)
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.get();
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}
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// If the input source is a stationary device and the point is defined, we may
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// need to dispatch synthesized ePointerMove at the pointer later. So, in
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// that case, we should store the data.
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if (aMouseEvent.InputSourceSupportsHover() &&
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aRefPoint != nsPoint(NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE)) {
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pointerInfo->RecordLastState(aRefPoint, aMouseEvent);
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#ifdef DEBUG
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if (MOZ_LOG_TEST(gLogPointerLocation, LogLevel::Info)) {
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static uint32_t sFrequentMessageCount = 0;
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const bool isFrequentMessage = aMouseEvent.mMessage == ePointerMove;
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if (!isFrequentMessage ||
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MOZ_LOG_TEST(gLogPointerLocation, LogLevel::Verbose) ||
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!(sFrequentMessageCount % 50)) {
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MOZ_LOG(
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gLogPointerLocation,
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isFrequentMessage ? LogLevel::Debug : LogLevel::Info,
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("got %s on widget:%p at {%d, %d} (pointerId=%u, source=%s)\n",
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ToChar(aMouseEvent.mMessage), aMouseEvent.mWidget.get(),
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sLastMouseInfo->mLastRefPointInRootDoc.x,
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sLastMouseInfo->mLastRefPointInRootDoc.y, aMouseEvent.pointerId,
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InputSourceToString(aMouseEvent.mInputSource).get()));
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}
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if (isFrequentMessage) {
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sFrequentMessageCount++;
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} else {
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// Let's log the next ePointerMove after the other messages.
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sFrequentMessageCount = 0;
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}
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}
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#endif // #ifdef DEBUG
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}
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// Otherwise, i.e., if it's not a stationary device or the caller wants to
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// forget the point, we should clear the last position to abort to synthesize
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// ePointerMove.
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else {
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pointerInfo->ClearLastState();
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MOZ_LOG_DEBUG_ONLY(
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gLogPointerLocation, LogLevel::Info,
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("got %s on widget:%p, pointer location is cleared (pointerId=%u, "
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"source=%s)\n",
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ToChar(aMouseEvent.mMessage), aMouseEvent.mWidget.get(),
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aMouseEvent.pointerId,
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InputSourceToString(aMouseEvent.mInputSource).get()));
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}
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}
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/* static */
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void PointerEventHandler::RecordMouseState(
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PresShell& aRootPresShell, const WidgetMouseEvent& aMouseEvent) {
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MOZ_ASSERT(aRootPresShell.IsRoot());
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if (!sLastMouseInfo) {
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sLastMouseInfo = new PointerInfo();
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}
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sLastMousePresShell = do_GetWeakReference(&aRootPresShell);
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sLastMouseWidget = do_GetWeakReference(aMouseEvent.mWidget.get());
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sLastMousePointerId = Some(aMouseEvent.pointerId);
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sLastMouseInfo->mLastRefPointInRootDoc =
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aRootPresShell.GetEventLocation(aMouseEvent);
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sLastMouseInfo->mLastTargetGuid =
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layers::InputAPZContext::GetTargetLayerGuid();
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// FIXME: Don't trust the synthesized for tests flag of drag events.
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if (aMouseEvent.mClass != eDragEventClass) {
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// eMouseDown and eMouseUp may cause some mouse boundary events. So,
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// mIsActive should be set to the new state after handling the mouse
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// boundary events because when this is called, we have not dispatched any
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// mouse boundary events. After that, WillDispatchMouseEventToDOM() is
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// called and update mIsActive to the latest one.
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sLastMouseInfo->mIsActive = !!aMouseEvent.ComputeButtonsBeforeDispatch();
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sLastMouseInfo->mInputSource = aMouseEvent.mInputSource;
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sLastMouseInfo->mIsSynthesizedForTests =
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aMouseEvent.mFlags.mIsSynthesizedForTests;
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}
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#ifdef DEBUG
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if (MOZ_LOG_TEST(gLogMouseLocation, LogLevel::Info)) {
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static uint32_t sFrequentMessageCount = 0;
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const bool isFrequentMessage =
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aMouseEvent.mMessage == eMouseMove || aMouseEvent.mMessage == eDragOver;
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if (!isFrequentMessage ||
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MOZ_LOG_TEST(gLogMouseLocation, LogLevel::Verbose) ||
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!(sFrequentMessageCount % 50)) {
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MOZ_LOG(
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gLogMouseLocation,
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isFrequentMessage ? LogLevel::Debug : LogLevel::Info,
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("[ps=%p]got %s on widget:%p at {%d, %d} (pointerId=%u, source=%s)\n",
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&aRootPresShell, ToChar(aMouseEvent.mMessage),
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aMouseEvent.mWidget.get(), sLastMouseInfo->mLastRefPointInRootDoc.x,
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sLastMouseInfo->mLastRefPointInRootDoc.y, aMouseEvent.pointerId,
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InputSourceToString(aMouseEvent.mInputSource).get()));
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}
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if (isFrequentMessage) {
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sFrequentMessageCount++;
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} else {
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// Let's log the next eMouseMove or eDragOver after the other
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// messages.
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sFrequentMessageCount = 0;
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}
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}
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#endif // #ifdef DEBUG
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}
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/* static */
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void PointerEventHandler::WillDispatchMouseEventToDOM(
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const WidgetMouseEvent& aMouseEvent) {
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if (!sLastMouseInfo) {
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return;
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}
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// aMouseEvent is going to be dispatched into the DOM. This means that the web
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// app can know the new state and we should handle things with the new state
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// starting from here. Therefore, we should update mIsActive right now.
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sLastMouseInfo->mIsActive = !!aMouseEvent.mButtons;
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}
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/* static */
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void PointerEventHandler::ClearMouseState(PresShell& aRootPresShell,
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const WidgetMouseEvent& aMouseEvent) {
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MOZ_ASSERT(aRootPresShell.IsRoot());
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const RefPtr<PresShell> lastMousePresShell =
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do_QueryReferent(sLastMousePresShell);
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if (lastMousePresShell != &aRootPresShell) {
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return;
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}
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sLastMouseInfo->ClearLastState();
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sLastMouseInfo->mLastTargetGuid =
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layers::InputAPZContext::GetTargetLayerGuid();
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sLastMouseInfo->mInputSource = MouseEvent_Binding::MOZ_SOURCE_UNKNOWN;
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sLastMouseInfo->mIsSynthesizedForTests =
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aMouseEvent.mFlags.mIsSynthesizedForTests;
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sLastMousePointerId.reset();
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MOZ_LOG_DEBUG_ONLY(gLogMouseLocation, LogLevel::Info,
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("[ps=%p]got %s on widget:%p, mouse location is cleared "
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"(pointerId=%u, source=%s)\n",
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&aRootPresShell, ToChar(aMouseEvent.mMessage),
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aMouseEvent.mWidget.get(), aMouseEvent.pointerId,
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InputSourceToString(aMouseEvent.mInputSource).get()));
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}
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/* static */
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LazyLogModule& PointerEventHandler::MouseLocationLogRef() {
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return gLogMouseLocation;
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}
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/* static */
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LazyLogModule& PointerEventHandler::PointerLocationLogRef() {
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return gLogPointerLocation;
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}
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/* static */
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void PointerEventHandler::UpdatePointerActiveState(WidgetMouseEvent* aEvent,
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nsIContent* aTargetContent) {
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if (!aEvent) {
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return;
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}
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switch (aEvent->mMessage) {
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case eMouseEnterIntoWidget: {
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const PointerInfo* const pointerInfo = GetPointerInfo(aEvent->pointerId);
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if (aEvent->mFlags.mIsSynthesizedForTests) {
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if (pointerInfo && !pointerInfo->mIsSynthesizedForTests) {
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// Do not overwrite the PointerInfo which is set by user input with
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// synthesized pointer move.
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return;
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}
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}
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// Update sLastPointerId so that the synthesized eMouseMove which
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// PresShell schedules in response to eMouseEnterIntoWidget can pass the
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// IsLastPointerId check in EventStateManager::UpdateCursor. Without this,
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// a fullscreen window swap (or any other widget-level event that fires
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// eMouseExitFromWidget followed by eMouseEnterIntoWidget while the
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// pointer hasn't actually moved) clears sLastPointerId and never
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// restores it, leaving the cursor stuck in whatever state it had before
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// the swap until the next real pointer event (bug 2031413).
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UpdateLastPointerId(aEvent->pointerId, aEvent->mMessage);
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// In this case we have to know information about available mouse pointers
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InsertOrUpdateActivePointer(
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aEvent->pointerId,
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MakeUnique<PointerInfo>(PointerInfo::Active::No, aEvent->mInputSource,
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PointerInfo::Primary::Yes,
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PointerInfo::FromTouchEvent::No, nullptr,
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pointerInfo,
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static_cast<PointerInfo::SynthesizeForTests>(
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aEvent->mFlags.mIsSynthesizedForTests)),
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aEvent->mMessage, __func__);
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MaybeCacheSpoofedPointerID(aEvent->mInputSource, aEvent->pointerId);
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break;
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}
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case ePointerMove: {
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if (aEvent->IsReal()) {
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UpdateLastPointerId(aEvent->pointerId, aEvent->mMessage);
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}
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// If the event is a synthesized mouse event, we should register the
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// pointerId for the test if the pointer is not there.
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if (!aEvent->mFlags.mIsSynthesizedForTests ||
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aEvent->mInputSource != MouseEvent_Binding::MOZ_SOURCE_MOUSE) {
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return;
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}
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const PointerInfo* const pointerInfo = GetPointerInfo(aEvent->pointerId);
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if (pointerInfo) {
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return;
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}
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InsertOrUpdateActivePointer(
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aEvent->pointerId,
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MakeUnique<PointerInfo>(
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PointerInfo::Active::No, MouseEvent_Binding::MOZ_SOURCE_MOUSE,
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PointerInfo::Primary::Yes, PointerInfo::FromTouchEvent::No,
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nullptr, pointerInfo, PointerInfo::SynthesizeForTests::Yes),
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aEvent->mMessage, __func__);
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return;
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}
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case ePointerDown:
|
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UpdateLastPointerId(aEvent->pointerId, aEvent->mMessage);
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sPointerCapturingElementAtLastPointerUpEvent = nullptr;
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// In this case we switch pointer to active state
|
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if (WidgetPointerEvent* pointerEvent = aEvent->AsPointerEvent()) {
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// XXXedgar, test could possibly synthesize a mousedown event on a
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// coordinate outside the browser window and cause aTargetContent to be
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// nullptr, not sure if this also happens on real usage.
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InsertOrUpdateActivePointer(
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pointerEvent->pointerId,
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MakeUnique<PointerInfo>(
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PointerInfo::Active::Yes, *pointerEvent,
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aTargetContent ? aTargetContent->OwnerDoc() : nullptr,
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GetPointerInfo(aEvent->pointerId)),
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pointerEvent->mMessage, __func__);
|
|
MaybeCacheSpoofedPointerID(pointerEvent->mInputSource,
|
|
pointerEvent->pointerId);
|
|
}
|
|
break;
|
|
case ePointerCancel:
|
|
// pointercancel means a pointer is unlikely to continue to produce
|
|
// pointer events. In that case, we should turn off active state or remove
|
|
// the pointer from active pointers.
|
|
case ePointerUp:
|
|
// In this case we remove information about pointer or turn off active
|
|
// state
|
|
if (WidgetPointerEvent* pointerEvent = aEvent->AsPointerEvent()) {
|
|
if (pointerEvent->mInputSource !=
|
|
MouseEvent_Binding::MOZ_SOURCE_TOUCH) {
|
|
UpdateLastPointerId(aEvent->pointerId, aEvent->mMessage);
|
|
InsertOrUpdateActivePointer(
|
|
pointerEvent->pointerId,
|
|
MakeUnique<PointerInfo>(PointerInfo::Active::No, *pointerEvent,
|
|
nullptr,
|
|
GetPointerInfo(aEvent->pointerId)),
|
|
pointerEvent->mMessage, __func__);
|
|
} else {
|
|
MaybeForgetLastPointerId(aEvent->pointerId, aEvent->mMessage);
|
|
// XXX If the PointerInfo is registered with same pointerId as actual
|
|
// pointer and the event is synthesized for tests, we unregister the
|
|
// pointer unexpectedly here. However, it should be rare and
|
|
// currently, we use only pointerId for the key. Therefore, we cannot
|
|
// do nothing without changing the key.
|
|
RemoveActivePointer(aEvent->pointerId, aEvent->mMessage, __func__);
|
|
}
|
|
}
|
|
break;
|
|
case eMouseExitFromWidget:
|
|
if (aEvent->mFlags.mIsSynthesizedForTests) {
|
|
const PointerInfo* const pointerInfo =
|
|
GetPointerInfo(aEvent->pointerId);
|
|
if (pointerInfo && !pointerInfo->mIsSynthesizedForTests) {
|
|
// Do not remove the PointerInfo which is set by user input with
|
|
// synthesized pointer move.
|
|
return;
|
|
}
|
|
}
|
|
MaybeForgetLastPointerId(aEvent->pointerId, aEvent->mMessage);
|
|
// In this case we have to remove information about disappeared mouse
|
|
// pointers
|
|
RemoveActivePointer(aEvent->pointerId, aEvent->mMessage, __func__);
|
|
break;
|
|
default:
|
|
MOZ_ASSERT_UNREACHABLE("event has invalid type");
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* static */
|
|
void PointerEventHandler::RequestPointerCaptureById(uint32_t aPointerId,
|
|
Element* aElement) {
|
|
SetPointerCaptureById(aPointerId, aElement);
|
|
|
|
if (BrowserChild* browserChild =
|
|
BrowserChild::GetFrom(aElement->OwnerDoc()->GetDocShell())) {
|
|
browserChild->SendRequestPointerCapture(
|
|
aPointerId,
|
|
[aPointerId](bool aSuccess) {
|
|
if (!aSuccess) {
|
|
PointerEventHandler::ReleasePointerCaptureById(aPointerId);
|
|
}
|
|
},
|
|
[](mozilla::ipc::ResponseRejectReason) {});
|
|
}
|
|
}
|
|
|
|
/* static */
|
|
void PointerEventHandler::SetPointerCaptureById(uint32_t aPointerId,
|
|
Element* aElement) {
|
|
MOZ_ASSERT(aElement);
|
|
sPointerCaptureList->WithEntryHandle(aPointerId, [&](auto&& entry) {
|
|
if (entry) {
|
|
entry.Data()->mPendingElement = aElement;
|
|
} else {
|
|
entry.Insert(MakeUnique<PointerCaptureInfo>(aElement));
|
|
}
|
|
});
|
|
}
|
|
|
|
/* static */
|
|
PointerCaptureInfo* PointerEventHandler::GetPointerCaptureInfo(
|
|
uint32_t aPointerId) {
|
|
PointerCaptureInfo* pointerCaptureInfo = nullptr;
|
|
sPointerCaptureList->Get(aPointerId, &pointerCaptureInfo);
|
|
return pointerCaptureInfo;
|
|
}
|
|
|
|
/* static */
|
|
void PointerEventHandler::ReleasePointerCaptureById(uint32_t aPointerId) {
|
|
PointerCaptureInfo* pointerCaptureInfo = GetPointerCaptureInfo(aPointerId);
|
|
if (pointerCaptureInfo) {
|
|
if (Element* pendingElement = pointerCaptureInfo->mPendingElement) {
|
|
if (BrowserChild* browserChild = BrowserChild::GetFrom(
|
|
pendingElement->OwnerDoc()->GetDocShell())) {
|
|
browserChild->SendReleasePointerCapture(aPointerId);
|
|
}
|
|
}
|
|
pointerCaptureInfo->mPendingElement = nullptr;
|
|
}
|
|
}
|
|
|
|
/* static */
|
|
void PointerEventHandler::ReleaseAllPointerCapture() {
|
|
for (const auto& entry : *sPointerCaptureList) {
|
|
PointerCaptureInfo* data = entry.GetWeak();
|
|
if (data && data->mPendingElement) {
|
|
ReleasePointerCaptureById(entry.GetKey());
|
|
}
|
|
}
|
|
}
|
|
|
|
/* static */
|
|
bool PointerEventHandler::SetPointerCaptureRemoteTarget(
|
|
uint32_t aPointerId, dom::BrowserParent* aBrowserParent) {
|
|
MOZ_ASSERT(XRE_IsParentProcess());
|
|
MOZ_ASSERT(sPointerCaptureRemoteTargetTable);
|
|
MOZ_ASSERT(aBrowserParent);
|
|
|
|
if (PointerLockManager::GetLockedRemoteTarget()) {
|
|
return false;
|
|
}
|
|
|
|
BrowserParent* currentRemoteTarget =
|
|
PointerEventHandler::GetPointerCapturingRemoteTarget(aPointerId);
|
|
if (currentRemoteTarget && currentRemoteTarget != aBrowserParent) {
|
|
return false;
|
|
}
|
|
|
|
sPointerCaptureRemoteTargetTable->InsertOrUpdate(aPointerId, aBrowserParent);
|
|
return true;
|
|
}
|
|
|
|
/* static */
|
|
void PointerEventHandler::ReleasePointerCaptureRemoteTarget(
|
|
BrowserParent* aBrowserParent) {
|
|
MOZ_ASSERT(XRE_IsParentProcess());
|
|
MOZ_ASSERT(sPointerCaptureRemoteTargetTable);
|
|
MOZ_ASSERT(aBrowserParent);
|
|
|
|
sPointerCaptureRemoteTargetTable->RemoveIf([aBrowserParent](
|
|
const auto& iter) {
|
|
BrowserParent* browserParent = iter.Data();
|
|
MOZ_ASSERT(browserParent, "Null BrowserParent in pointer captured table?");
|
|
|
|
return aBrowserParent == browserParent;
|
|
});
|
|
}
|
|
|
|
/* static */
|
|
void PointerEventHandler::ReleasePointerCaptureRemoteTarget(
|
|
uint32_t aPointerId) {
|
|
MOZ_ASSERT(XRE_IsParentProcess());
|
|
MOZ_ASSERT(sPointerCaptureRemoteTargetTable);
|
|
|
|
sPointerCaptureRemoteTargetTable->Remove(aPointerId);
|
|
}
|
|
|
|
/* static */
|
|
BrowserParent* PointerEventHandler::GetPointerCapturingRemoteTarget(
|
|
uint32_t aPointerId) {
|
|
MOZ_ASSERT(XRE_IsParentProcess());
|
|
MOZ_ASSERT(sPointerCaptureRemoteTargetTable);
|
|
|
|
return sPointerCaptureRemoteTargetTable->Get(aPointerId);
|
|
}
|
|
|
|
/* static */
|
|
void PointerEventHandler::ReleaseAllPointerCaptureRemoteTarget() {
|
|
MOZ_ASSERT(XRE_IsParentProcess());
|
|
MOZ_ASSERT(sPointerCaptureRemoteTargetTable);
|
|
|
|
for (auto iter = sPointerCaptureRemoteTargetTable->Iter(); !iter.Done();
|
|
iter.Next()) {
|
|
BrowserParent* browserParent = iter.Data();
|
|
MOZ_ASSERT(browserParent, "Null BrowserParent in pointer captured table?");
|
|
|
|
(void)browserParent->SendReleaseAllPointerCapture();
|
|
iter.Remove();
|
|
}
|
|
}
|
|
|
|
/* static */
|
|
const PointerInfo* PointerEventHandler::GetPointerInfo(uint32_t aPointerId) {
|
|
return sActivePointersIds->Get(aPointerId);
|
|
}
|
|
|
|
/* static */
|
|
const PointerInfo* PointerEventHandler::GetLastMouseInfo(
|
|
const PresShell* aRootPresShell /* = nullptr */) {
|
|
if (!sLastMousePresShell || !sLastMouseInfo) {
|
|
return nullptr;
|
|
}
|
|
if (aRootPresShell) {
|
|
const RefPtr<PresShell> lastMousePresShell =
|
|
do_QueryReferent(sLastMousePresShell);
|
|
if (lastMousePresShell != aRootPresShell) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
return sLastMouseInfo;
|
|
}
|
|
|
|
/* static */
|
|
Maybe<uint32_t> PointerEventHandler::TryClaimOrphanedLastMouseInfo(
|
|
PresShell& aRootPresShell) {
|
|
MOZ_ASSERT(aRootPresShell.IsRoot());
|
|
if (!sLastMouseInfo || !sLastMouseInfo->HasLastState() ||
|
|
!sLastMousePointerId) {
|
|
return Nothing();
|
|
}
|
|
// If another live PresShell still owns the state, leave it alone.
|
|
if (sLastMousePresShell) {
|
|
const RefPtr<PresShell> previousOwner =
|
|
do_QueryReferent(sLastMousePresShell);
|
|
if (previousOwner) {
|
|
return Nothing();
|
|
}
|
|
}
|
|
// The previous owner has been torn down. PresShell::IsRoot() only means
|
|
// root of the in-process presContext tree, so the previous owner could
|
|
// have been on a different top-level window than aRootPresShell. Only
|
|
// claim the state if the widget that recorded it is the same as
|
|
// aRootPresShell's widget; otherwise the cached coordinates would land
|
|
// in the wrong window's root-frame space.
|
|
if (!sLastMouseWidget) {
|
|
return Nothing();
|
|
}
|
|
const nsCOMPtr<nsIWidget> previousWidget = do_QueryReferent(sLastMouseWidget);
|
|
if (!previousWidget || previousWidget != aRootPresShell.GetOwnWidget()) {
|
|
return Nothing();
|
|
}
|
|
// Rebind ownership to the new PresShell so subsequent calls to
|
|
// GetLastMouseInfo(this) work.
|
|
sLastMousePresShell = do_GetWeakReference(&aRootPresShell);
|
|
return sLastMousePointerId;
|
|
}
|
|
|
|
/* static */
|
|
void PointerEventHandler::MaybeProcessPointerCapture(WidgetGUIEvent* aEvent) {
|
|
switch (aEvent->mClass) {
|
|
case eMouseEventClass:
|
|
ProcessPointerCaptureForMouse(aEvent->AsMouseEvent());
|
|
break;
|
|
case eTouchEventClass:
|
|
ProcessPointerCaptureForTouch(aEvent->AsTouchEvent());
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* static */
|
|
void PointerEventHandler::ProcessPointerCaptureForMouse(
|
|
WidgetMouseEvent* aEvent) {
|
|
if (!ShouldGeneratePointerEventFromMouse(aEvent)) {
|
|
return;
|
|
}
|
|
|
|
PointerCaptureInfo* info = GetPointerCaptureInfo(aEvent->pointerId);
|
|
if (!info || info->mPendingElement == info->mOverrideElement) {
|
|
return;
|
|
}
|
|
WidgetPointerEvent localEvent =
|
|
WidgetPointerEvent::MakeCopyFromMouseEvent(*aEvent);
|
|
InitPointerEventFromMouse(&localEvent, aEvent, eVoidEvent);
|
|
CheckPointerCaptureState(&localEvent);
|
|
}
|
|
|
|
/* static */
|
|
void PointerEventHandler::ProcessPointerCaptureForTouch(
|
|
WidgetTouchEvent* aEvent) {
|
|
if (!ShouldGeneratePointerEventFromTouch(aEvent)) {
|
|
return;
|
|
}
|
|
|
|
for (uint32_t i = 0; i < aEvent->mTouches.Length(); ++i) {
|
|
Touch* touch = aEvent->mTouches[i];
|
|
if (!TouchManager::ShouldConvertTouchToPointer(touch, aEvent)) {
|
|
continue;
|
|
}
|
|
PointerCaptureInfo* info = GetPointerCaptureInfo(touch->Identifier());
|
|
if (!info || info->mPendingElement == info->mOverrideElement) {
|
|
continue;
|
|
}
|
|
WidgetPointerEvent event(aEvent->IsTrusted(), eVoidEvent, aEvent->mWidget);
|
|
InitPointerEventFromTouch(event, *aEvent, *touch);
|
|
CheckPointerCaptureState(&event);
|
|
}
|
|
}
|
|
|
|
/* static */
|
|
void PointerEventHandler::CheckPointerCaptureState(WidgetPointerEvent* aEvent) {
|
|
// Handle pending pointer capture before any pointer events except
|
|
// gotpointercapture / lostpointercapture.
|
|
if (!aEvent) {
|
|
return;
|
|
}
|
|
MOZ_ASSERT(aEvent->mClass == ePointerEventClass);
|
|
|
|
PointerCaptureInfo* captureInfo = GetPointerCaptureInfo(aEvent->pointerId);
|
|
|
|
if (!captureInfo ||
|
|
captureInfo->mPendingElement == captureInfo->mOverrideElement) {
|
|
return;
|
|
}
|
|
|
|
const RefPtr<Element> overrideElement = captureInfo->mOverrideElement;
|
|
RefPtr<Element> pendingElement = captureInfo->mPendingElement;
|
|
|
|
// Update captureInfo before dispatching event since sPointerCaptureList may
|
|
// be changed in the pointer event listener.
|
|
captureInfo->mOverrideElement = captureInfo->mPendingElement;
|
|
if (captureInfo->Empty()) {
|
|
sPointerCaptureList->Remove(aEvent->pointerId);
|
|
captureInfo = nullptr;
|
|
}
|
|
|
|
if (overrideElement) {
|
|
DispatchGotOrLostPointerCaptureEvent(/* aIsGotCapture */ false, aEvent,
|
|
overrideElement);
|
|
// A `lostpointercapture` event listener may have removed the new pointer
|
|
// capture element from the tree. Then, we shouldn't dispatch
|
|
// `gotpointercapture` on the node.
|
|
if (pendingElement && !pendingElement->IsInComposedDoc()) {
|
|
// We won't dispatch `gotpointercapture`, so, we should never fire
|
|
// `lostpointercapture` on it at processing the next pending pointer
|
|
// capture.
|
|
if ((captureInfo = GetPointerCaptureInfo(aEvent->pointerId)) &&
|
|
captureInfo->mOverrideElement == pendingElement) {
|
|
captureInfo->mOverrideElement = nullptr;
|
|
if (captureInfo->Empty()) {
|
|
sPointerCaptureList->Remove(aEvent->pointerId);
|
|
captureInfo = nullptr;
|
|
}
|
|
}
|
|
pendingElement = nullptr;
|
|
} else {
|
|
captureInfo = nullptr; // Maybe destroyed
|
|
}
|
|
}
|
|
if (pendingElement) {
|
|
DispatchGotOrLostPointerCaptureEvent(/* aIsGotCapture */ true, aEvent,
|
|
pendingElement);
|
|
captureInfo = nullptr; // Maybe destroyed
|
|
}
|
|
|
|
// If nobody captures the pointer and the pointer will not be removed, we need
|
|
// to dispatch pointer boundary events if the pointer will keep hovering over
|
|
// somewhere even after the pointer is up.
|
|
// XXX Do we need to check whether there is new pending pointer capture
|
|
// element? But if there is, what should we do?
|
|
if (overrideElement && !pendingElement && aEvent->mWidget &&
|
|
aEvent->mMessage != ePointerCancel &&
|
|
(aEvent->mMessage != ePointerUp || aEvent->InputSourceSupportsHover())) {
|
|
aEvent->mSynthesizeMoveAfterDispatch = true;
|
|
}
|
|
}
|
|
|
|
/* static */
|
|
void PointerEventHandler::SynthesizeMoveToDispatchBoundaryEvents(
|
|
const WidgetMouseEvent* aEvent) {
|
|
nsCOMPtr<nsIWidget> widget = aEvent->mWidget;
|
|
if (NS_WARN_IF(!widget)) {
|
|
return;
|
|
}
|
|
Maybe<WidgetMouseEvent> mouseMoveEvent;
|
|
Maybe<WidgetPointerEvent> pointerMoveEvent;
|
|
if (aEvent->mClass == eMouseEventClass) {
|
|
mouseMoveEvent.emplace(true, eMouseMove, aEvent->mWidget,
|
|
WidgetMouseEvent::eSynthesized);
|
|
} else if (aEvent->mClass == ePointerEventClass) {
|
|
pointerMoveEvent.emplace(true, ePointerMove, aEvent->mWidget);
|
|
pointerMoveEvent->mReason = WidgetMouseEvent::eSynthesized;
|
|
|
|
const WidgetPointerEvent* pointerEvent = aEvent->AsPointerEvent();
|
|
MOZ_ASSERT(pointerEvent);
|
|
pointerMoveEvent->mIsPrimary = pointerEvent->mIsPrimary;
|
|
pointerMoveEvent->mFromTouchEvent = pointerEvent->mFromTouchEvent;
|
|
pointerMoveEvent->mWidth = pointerEvent->mWidth;
|
|
pointerMoveEvent->mHeight = pointerEvent->mHeight;
|
|
} else {
|
|
MOZ_ASSERT_UNREACHABLE(
|
|
"The event must be WidgetMouseEvent or WidgetPointerEvent");
|
|
}
|
|
WidgetMouseEvent& event =
|
|
mouseMoveEvent ? mouseMoveEvent.ref() : pointerMoveEvent.ref();
|
|
event.mFlags.mIsSynthesizedForTests = aEvent->mFlags.mIsSynthesizedForTests;
|
|
event.mIgnoreCapturingContent = true;
|
|
event.mRefPoint = aEvent->mRefPoint;
|
|
event.mInputSource = aEvent->mInputSource;
|
|
event.mButtons = aEvent->mButtons;
|
|
event.mModifiers = aEvent->mModifiers;
|
|
event.convertToPointer = false;
|
|
event.AssignPointerHelperData(*aEvent);
|
|
|
|
// XXX If the pointer is already over a document in different process, we
|
|
// cannot synthesize the pointermove/mousemove on the document since
|
|
// dispatching events to the parent process is currently allowed only in
|
|
// automation.
|
|
widget->DispatchEvent(&event);
|
|
}
|
|
|
|
/* static */
|
|
void PointerEventHandler::ImplicitlyCapturePointer(nsIFrame* aFrame,
|
|
const WidgetEvent& aEvent) {
|
|
MOZ_ASSERT(aEvent.mMessage == ePointerDown);
|
|
if (!aFrame || !IsPointerEventImplicitCaptureForTouchEnabled()) {
|
|
return;
|
|
}
|
|
const WidgetPointerEvent* pointerEvent = aEvent.AsPointerEvent();
|
|
NS_WARNING_ASSERTION(pointerEvent,
|
|
"Call ImplicitlyCapturePointer with non-pointer event");
|
|
if (!pointerEvent->mFromTouchEvent) {
|
|
// We only implicitly capture the pointer for touch device.
|
|
return;
|
|
}
|
|
nsIContent* target = aFrame->GetEventTargetContent(aEvent);
|
|
if (NS_WARN_IF(!target) || NS_WARN_IF(!target->IsElement())) {
|
|
return;
|
|
}
|
|
RequestPointerCaptureById(pointerEvent->pointerId, target->AsElement());
|
|
}
|
|
|
|
/* static */
|
|
void PointerEventHandler::ImplicitlyReleasePointerCapture(WidgetEvent* aEvent) {
|
|
MOZ_ASSERT(aEvent);
|
|
if (aEvent->mMessage != ePointerUp && aEvent->mMessage != ePointerCancel) {
|
|
return;
|
|
}
|
|
WidgetPointerEvent* pointerEvent = aEvent->AsPointerEvent();
|
|
ReleasePointerCaptureById(pointerEvent->pointerId);
|
|
CheckPointerCaptureState(pointerEvent);
|
|
}
|
|
|
|
/* static */
|
|
void PointerEventHandler::MaybeImplicitlyReleasePointerCapture(
|
|
WidgetGUIEvent* aEvent) {
|
|
MOZ_ASSERT(aEvent);
|
|
const EventMessage pointerEventMessage =
|
|
PointerEventHandler::ToPointerEventMessage(aEvent);
|
|
if (pointerEventMessage != ePointerUp &&
|
|
pointerEventMessage != ePointerCancel) {
|
|
return;
|
|
}
|
|
PointerEventHandler::MaybeProcessPointerCapture(aEvent);
|
|
}
|
|
|
|
/* static */
|
|
Element* PointerEventHandler::GetPointerCapturingElement(uint32_t aPointerId) {
|
|
PointerCaptureInfo* pointerCaptureInfo = GetPointerCaptureInfo(aPointerId);
|
|
if (pointerCaptureInfo) {
|
|
return pointerCaptureInfo->mOverrideElement;
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
/* static */
|
|
Element* PointerEventHandler::GetPendingPointerCapturingElement(
|
|
uint32_t aPointerId) {
|
|
PointerCaptureInfo* pointerCaptureInfo = GetPointerCaptureInfo(aPointerId);
|
|
if (pointerCaptureInfo) {
|
|
return pointerCaptureInfo->mPendingElement;
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
/* static */
|
|
Element* PointerEventHandler::GetPointerCapturingElement(
|
|
const WidgetGUIEvent* aEvent) {
|
|
return GetPointerCapturingElementInternal(CapturingState::Override, aEvent);
|
|
}
|
|
|
|
/* static */
|
|
Element* PointerEventHandler::GetPendingPointerCapturingElement(
|
|
const WidgetGUIEvent* aEvent) {
|
|
return GetPointerCapturingElementInternal(CapturingState::Pending, aEvent);
|
|
}
|
|
|
|
/* static */
|
|
Element* PointerEventHandler::GetPointerCapturingElementInternal(
|
|
CapturingState aCapturingState, const WidgetGUIEvent* aEvent) {
|
|
if ((aEvent->mClass != ePointerEventClass &&
|
|
aEvent->mClass != eMouseEventClass) ||
|
|
aEvent->mMessage == ePointerDown || aEvent->mMessage == eMouseDown) {
|
|
// Pointer capture should only be applied to all pointer events and mouse
|
|
// events except ePointerDown and eMouseDown;
|
|
return nullptr;
|
|
}
|
|
|
|
// PointerEventHandler may synthesize ePointerMove event before releasing the
|
|
// mouse capture (it's done by a default handler of eMouseUp) after handling
|
|
// ePointerUp. Then, we need to dispatch pointer boundary events for the
|
|
// element under the pointer to emulate a pointer move after a pointer
|
|
// capture. Therefore, we need to ignore the capturing element if the event
|
|
// dispatcher requests it.
|
|
if (aEvent->ShouldIgnoreCapturingContent()) {
|
|
return nullptr;
|
|
}
|
|
|
|
const WidgetMouseEvent* const mouseEvent = aEvent->AsMouseEvent();
|
|
if (!mouseEvent) {
|
|
return nullptr;
|
|
}
|
|
return aCapturingState == CapturingState::Pending
|
|
? GetPendingPointerCapturingElement(mouseEvent->pointerId)
|
|
: GetPointerCapturingElement(mouseEvent->pointerId);
|
|
}
|
|
|
|
/* static */
|
|
RefPtr<Element>
|
|
PointerEventHandler::GetPointerCapturingElementAtLastPointerUp() {
|
|
return do_QueryReferent(sPointerCapturingElementAtLastPointerUpEvent);
|
|
}
|
|
|
|
void PointerEventHandler::ReleasePointerCapturingElementAtLastPointerUp() {
|
|
sPointerCapturingElementAtLastPointerUpEvent = nullptr;
|
|
}
|
|
|
|
/* static */
|
|
void PointerEventHandler::SetPointerCapturingElementAtLastPointerUp(
|
|
nsWeakPtr&& aPointerCapturingElement) {
|
|
sPointerCapturingElementAtLastPointerUpEvent =
|
|
aPointerCapturingElement.forget();
|
|
}
|
|
|
|
/* static */
|
|
void PointerEventHandler::ReleaseIfCaptureByDescendant(nsIContent* aContent) {
|
|
MOZ_ASSERT(aContent);
|
|
// We should check that aChild does not contain pointer capturing elements.
|
|
// If it does we should release the pointer capture for the elements.
|
|
if (!sPointerCaptureList->IsEmpty() && aContent->IsElement()) {
|
|
for (const auto& entry : *sPointerCaptureList) {
|
|
PointerCaptureInfo* data = entry.GetWeak();
|
|
if (data && data->mPendingElement &&
|
|
data->mPendingElement->IsInclusiveDescendantOf(aContent)) {
|
|
ReleasePointerCaptureById(entry.GetKey());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* static */
|
|
void PointerEventHandler::PreHandlePointerEventsPreventDefault(
|
|
WidgetPointerEvent* aPointerEvent, WidgetGUIEvent* aMouseOrTouchEvent) {
|
|
if (!aPointerEvent->mIsPrimary || aPointerEvent->mMessage == ePointerDown) {
|
|
return;
|
|
}
|
|
PointerInfo* pointerInfo = nullptr;
|
|
if (!sActivePointersIds->Get(aPointerEvent->pointerId, &pointerInfo) ||
|
|
!pointerInfo) {
|
|
// The PointerInfo for active pointer should be added for normal cases. But
|
|
// in some cases, we may receive mouse events before adding PointerInfo in
|
|
// sActivePointersIds. (e.g. receive mousemove before
|
|
// eMouseEnterIntoWidget). In these cases, we could ignore them because they
|
|
// are not the events between a DefaultPrevented pointerdown and the
|
|
// corresponding pointerup.
|
|
return;
|
|
}
|
|
if (!pointerInfo->mPreventMouseEventByContent) {
|
|
return;
|
|
}
|
|
aMouseOrTouchEvent->PreventDefault(false);
|
|
aMouseOrTouchEvent->mFlags.mOnlyChromeDispatch = true;
|
|
if (aPointerEvent->mMessage == ePointerUp) {
|
|
pointerInfo->mPreventMouseEventByContent = false;
|
|
}
|
|
}
|
|
|
|
/* static */
|
|
void PointerEventHandler::PostHandlePointerEventsPreventDefault(
|
|
PresShell* aPresShell, WidgetPointerEvent* aPointerEvent,
|
|
WidgetGUIEvent* aMouseOrTouchEvent) {
|
|
MOZ_ASSERT(aPresShell);
|
|
|
|
if (!aPointerEvent->mIsPrimary || aPointerEvent->mMessage != ePointerDown ||
|
|
!aPointerEvent->DefaultPreventedByContent()) {
|
|
return;
|
|
}
|
|
PointerInfo* pointerInfo = nullptr;
|
|
if (!sActivePointersIds->Get(aPointerEvent->pointerId, &pointerInfo) ||
|
|
!pointerInfo) {
|
|
// We already added the PointerInfo for active pointer when
|
|
// PresShell::HandleEvent handling pointerdown event. However, PreShell can
|
|
// be destroyed during handling of the pointerdown event, which causes the
|
|
// PointerInfo to be removed.
|
|
MOZ_ASSERT(aPresShell->IsDestroying(),
|
|
"If we got ePointerDown w/o active pointer info, the PresShell "
|
|
"should be destroying!!");
|
|
return;
|
|
}
|
|
// PreventDefault only applied for active pointers.
|
|
if (!pointerInfo->mIsActive) {
|
|
return;
|
|
}
|
|
aMouseOrTouchEvent->PreventDefault(false);
|
|
aMouseOrTouchEvent->mFlags.mOnlyChromeDispatch = true;
|
|
pointerInfo->mPreventMouseEventByContent = true;
|
|
}
|
|
|
|
/* static */
|
|
void PointerEventHandler::InitPointerEventFromMouse(
|
|
WidgetPointerEvent* aPointerEvent, const WidgetMouseEvent* aMouseEvent,
|
|
EventMessage aMessage) {
|
|
MOZ_ASSERT(aPointerEvent);
|
|
MOZ_ASSERT(aMouseEvent);
|
|
aPointerEvent->pointerId = aMouseEvent->pointerId;
|
|
aPointerEvent->mInputSource = aMouseEvent->mInputSource;
|
|
aPointerEvent->mMessage = aMessage;
|
|
aPointerEvent->mButton = aMouseEvent->mMessage == eMouseMove
|
|
? MouseButton::eNotPressed
|
|
: aMouseEvent->mButton;
|
|
|
|
aPointerEvent->mButtons = aMouseEvent->mButtons;
|
|
aPointerEvent->mPressure = aMouseEvent->ComputeMouseButtonPressure();
|
|
}
|
|
|
|
/* static */
|
|
void PointerEventHandler::InitPointerEventFromTouch(
|
|
WidgetPointerEvent& aPointerEvent, const WidgetTouchEvent& aTouchEvent,
|
|
const mozilla::dom::Touch& aTouch) {
|
|
// Use mButton/mButtons only when mButton got a value (from pen input)
|
|
int16_t button = aTouchEvent.mMessage == eTouchRawUpdate ||
|
|
aTouchEvent.mMessage == eTouchMove
|
|
? MouseButton::eNotPressed
|
|
: aTouchEvent.mButton != MouseButton::eNotPressed
|
|
? aTouchEvent.mButton
|
|
: MouseButton::ePrimary;
|
|
int16_t buttons = aTouchEvent.mMessage == eTouchEnd
|
|
? MouseButtonsFlag::eNoButtons
|
|
: aTouchEvent.mButton != MouseButton::eNotPressed
|
|
? aTouchEvent.mButtons
|
|
: MouseButtonsFlag::ePrimaryFlag;
|
|
|
|
// XXX: This doesn't support multi pen scenario (bug 1904865)
|
|
if (aTouchEvent.mInputSource == MouseEvent_Binding::MOZ_SOURCE_TOUCH) {
|
|
// Only the first touch would be the primary pointer.
|
|
aPointerEvent.mIsPrimary =
|
|
aTouchEvent.mMessage == eTouchStart
|
|
? !HasActiveTouchPointer()
|
|
: GetPointerPrimaryState(aTouch.Identifier());
|
|
}
|
|
aPointerEvent.pointerId = aTouch.Identifier();
|
|
aPointerEvent.mRefPoint = aTouch.mRefPoint;
|
|
aPointerEvent.mModifiers = aTouchEvent.mModifiers;
|
|
aPointerEvent.mWidth = aTouch.RadiusX(CallerType::System);
|
|
aPointerEvent.mHeight = aTouch.RadiusY(CallerType::System);
|
|
aPointerEvent.mTilt = aTouch.mTilt;
|
|
aPointerEvent.twist = aTouch.twist;
|
|
aPointerEvent.mAngle = aTouch.mAngle;
|
|
aPointerEvent.mTimeStamp = aTouchEvent.mTimeStamp;
|
|
aPointerEvent.mFlags = aTouchEvent.mFlags;
|
|
aPointerEvent.mButton = button;
|
|
aPointerEvent.mButtons = buttons;
|
|
aPointerEvent.mInputSource = aTouchEvent.mInputSource;
|
|
aPointerEvent.mFromTouchEvent = true;
|
|
aPointerEvent.mPressure = aTouch.mForce;
|
|
}
|
|
|
|
/* static */
|
|
void PointerEventHandler::InitCoalescedEventFromPointerEvent(
|
|
WidgetPointerEvent& aCoalescedEvent,
|
|
const WidgetPointerEvent& aSourceEvent) {
|
|
aCoalescedEvent.mFlags.mCancelable = false;
|
|
aCoalescedEvent.mFlags.mBubbles = false;
|
|
|
|
aCoalescedEvent.mTimeStamp = aSourceEvent.mTimeStamp;
|
|
aCoalescedEvent.mRefPoint = aSourceEvent.mRefPoint;
|
|
aCoalescedEvent.mLastRefPoint = aSourceEvent.mLastRefPoint;
|
|
aCoalescedEvent.mModifiers = aSourceEvent.mModifiers;
|
|
|
|
// WidgetMouseEventBase
|
|
aCoalescedEvent.mButton = aSourceEvent.mButton;
|
|
aCoalescedEvent.mButtons = aSourceEvent.mButtons;
|
|
aCoalescedEvent.mPressure = aSourceEvent.mPressure;
|
|
aCoalescedEvent.mInputSource = aSourceEvent.mInputSource;
|
|
|
|
// pointerId, tiltX, tiltY, twist, tangentialPressure and convertToPointer.
|
|
aCoalescedEvent.AssignPointerHelperData(aSourceEvent);
|
|
|
|
// WidgetPointerEvent
|
|
aCoalescedEvent.mWidth = aSourceEvent.mWidth;
|
|
aCoalescedEvent.mHeight = aSourceEvent.mHeight;
|
|
aCoalescedEvent.mIsPrimary = aSourceEvent.mIsPrimary;
|
|
aCoalescedEvent.mFromTouchEvent = aSourceEvent.mFromTouchEvent;
|
|
}
|
|
|
|
/* static */
|
|
EventMessage PointerEventHandler::ToPointerEventMessage(
|
|
const WidgetGUIEvent* aMouseOrTouchEvent) {
|
|
MOZ_ASSERT(aMouseOrTouchEvent);
|
|
|
|
switch (aMouseOrTouchEvent->mMessage) {
|
|
case eMouseRawUpdate:
|
|
case eTouchRawUpdate:
|
|
return ePointerRawUpdate;
|
|
case eMouseMove:
|
|
return ePointerMove;
|
|
case eMouseUp:
|
|
return aMouseOrTouchEvent->AsMouseEvent()->mButtons ? ePointerMove
|
|
: ePointerUp;
|
|
case eMouseDown: {
|
|
const WidgetMouseEvent* mouseEvent = aMouseOrTouchEvent->AsMouseEvent();
|
|
return mouseEvent->mButtons & ~nsContentUtils::GetButtonsFlagForButton(
|
|
mouseEvent->mButton)
|
|
? ePointerMove
|
|
: ePointerDown;
|
|
}
|
|
case eTouchMove:
|
|
return ePointerMove;
|
|
case eTouchEnd:
|
|
return ePointerUp;
|
|
case eTouchStart:
|
|
return ePointerDown;
|
|
case eTouchCancel:
|
|
case eTouchPointerCancel:
|
|
return ePointerCancel;
|
|
default:
|
|
return eVoidEvent;
|
|
}
|
|
}
|
|
|
|
/* static */
|
|
bool PointerEventHandler::NeedToDispatchPointerRawUpdate(
|
|
const Document* aDocument) {
|
|
const nsPIDOMWindowInner* const innerWindow =
|
|
aDocument ? aDocument->GetInnerWindow() : nullptr;
|
|
return innerWindow && innerWindow->HasPointerRawUpdateEventListeners() &&
|
|
innerWindow->IsSecureContext();
|
|
}
|
|
|
|
/* static */
|
|
nsresult PointerEventHandler::DispatchPointerEventWithTarget(
|
|
EventMessage aPointerEventMessage,
|
|
const WidgetMouseEvent& aMouseOrPointerEvent,
|
|
const AutoWeakFrame& aTargetWeakFrame, nsIContent* aTargetContent,
|
|
nsEventStatus* aStatus /* = nullptr */) {
|
|
Maybe<WidgetPointerEvent> pointerEvent;
|
|
if (aMouseOrPointerEvent.mClass == ePointerEventClass) {
|
|
pointerEvent.emplace(aPointerEventMessage,
|
|
*aMouseOrPointerEvent.AsPointerEvent());
|
|
} else {
|
|
pointerEvent.emplace(
|
|
WidgetPointerEvent::MakeCopyFromMouseEvent(aMouseOrPointerEvent));
|
|
PointerEventHandler::InitPointerEventFromMouse(
|
|
pointerEvent.ptr(), &aMouseOrPointerEvent, ePointerCancel);
|
|
}
|
|
pointerEvent->convertToPointer = false;
|
|
|
|
return DispatchPointerEventWithTarget(pointerEvent.ref(), aTargetWeakFrame,
|
|
aTargetContent, aStatus);
|
|
}
|
|
|
|
/* static */
|
|
nsresult PointerEventHandler::DispatchPointerEventWithTarget(
|
|
EventMessage aPointerEventMessage, const WidgetTouchEvent& aTouchEvent,
|
|
size_t aTouchIndex, const AutoWeakFrame& aTargetWeakFrame,
|
|
nsIContent* aTargetContent, nsEventStatus* aStatus /* = nullptr */) {
|
|
WidgetPointerEvent pointerEvent(aTouchEvent.IsTrusted(), aPointerEventMessage,
|
|
aTouchEvent.mWidget);
|
|
PointerEventHandler::InitPointerEventFromTouch(
|
|
pointerEvent, aTouchEvent, *aTouchEvent.mTouches[aTouchIndex]);
|
|
pointerEvent.convertToPointer = false;
|
|
|
|
return DispatchPointerEventWithTarget(pointerEvent, aTargetWeakFrame,
|
|
aTargetContent, aStatus);
|
|
}
|
|
|
|
/* static */
|
|
nsresult PointerEventHandler::DispatchPointerEventWithTarget(
|
|
WidgetPointerEvent& aPointerEvent, const AutoWeakFrame& aTargetWeakFrame,
|
|
nsIContent* aTargetContent, nsEventStatus* aStatus /* = nullptr */) {
|
|
if (aStatus) {
|
|
*aStatus = nsEventStatus_eIgnore;
|
|
}
|
|
|
|
AutoWeakFrame targetWeakFrame(aTargetWeakFrame);
|
|
nsCOMPtr<nsIContent> targetContent = aTargetContent;
|
|
if (targetWeakFrame) {
|
|
MOZ_ASSERT_IF(
|
|
targetContent,
|
|
targetContent == targetWeakFrame->GetEventTargetContent(aPointerEvent));
|
|
if (!targetContent) {
|
|
targetContent = targetWeakFrame->GetEventTargetContent(aPointerEvent);
|
|
if (NS_WARN_IF(!targetContent)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
} else if (NS_WARN_IF(!targetContent)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
const RefPtr<PresShell> presShell =
|
|
targetWeakFrame ? targetWeakFrame->PresShell()
|
|
: targetContent->OwnerDoc()->GetPresShell();
|
|
if (NS_WARN_IF(!presShell)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// If the event is not a gotpointercapture, lostpointercapture, click,
|
|
// auxclick or contextmenu event, run the process pending pointer capture
|
|
// steps for this PointerEvent.
|
|
switch (aPointerEvent.mMessage) {
|
|
case ePointerGotCapture:
|
|
case ePointerLostCapture:
|
|
case ePointerClick:
|
|
case ePointerAuxClick:
|
|
case eContextMenu:
|
|
break;
|
|
default: {
|
|
Maybe<AutoConnectedAncestorTracker> trackTargetContent;
|
|
if (targetContent->IsInComposedDoc()) {
|
|
trackTargetContent.emplace(*targetContent);
|
|
}
|
|
CheckPointerCaptureState(&aPointerEvent);
|
|
// If the event target was disconnected from the document, we should use
|
|
// its connected ancestor as the target of aPointerEvent.
|
|
if (trackTargetContent && trackTargetContent->ContentWasRemoved()) {
|
|
MOZ_ASSERT(!targetWeakFrame);
|
|
targetContent = trackTargetContent->GetConnectedContent();
|
|
if (NS_WARN_IF(!targetContent)) {
|
|
targetWeakFrame = nullptr;
|
|
// FIXME: If we lost the target content with dispatching
|
|
// ePointerGotCapture or ePointerLostCapture event, we may need to
|
|
// retarget the pointer event to the Document.
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
// The active document of the pointerId and pointer capture for the pointerId
|
|
// should be handled by EventStateManager::PreHandleEvent() immediately before
|
|
// dispatching the event to the DOM.
|
|
|
|
// Pointer boundary events should be handled by
|
|
// EventStateManager::PreHandleEvent() too.
|
|
|
|
nsEventStatus dummyStatus = nsEventStatus_eIgnore;
|
|
nsresult rv = presShell->HandleEventWithTarget(
|
|
&aPointerEvent, targetWeakFrame, targetContent,
|
|
aStatus ? aStatus : &dummyStatus);
|
|
|
|
// EventStateManager must have store the last `pointerover` target at handling
|
|
// the pointer boundary events. So, we need to do nothing here.
|
|
|
|
return rv;
|
|
}
|
|
|
|
/* static */
|
|
void PointerEventHandler::DispatchPointerFromMouseOrTouch(
|
|
PresShell* aShell, nsIFrame* aEventTargetFrame,
|
|
nsIContent* aEventTargetContent, Element* aPointerCapturingElement,
|
|
WidgetGUIEvent* aMouseOrTouchEvent, bool aDontRetargetEvents,
|
|
nsEventStatus* aStatus,
|
|
nsIContent** aMouseOrTouchEventTarget /* = nullptr */) {
|
|
MOZ_ASSERT(aEventTargetFrame || aEventTargetContent);
|
|
MOZ_ASSERT(aMouseOrTouchEvent);
|
|
|
|
nsWeakPtr pointerCapturingElementWeak =
|
|
do_GetWeakReference(aPointerCapturingElement);
|
|
EventMessage pointerMessage = eVoidEvent;
|
|
if (aMouseOrTouchEvent->mClass == eMouseEventClass) {
|
|
WidgetMouseEvent* mouseEvent = aMouseOrTouchEvent->AsMouseEvent();
|
|
// Don't dispatch pointer events caused by a mouse when simulating touch
|
|
// devices in RDM.
|
|
Document* doc = aShell->GetDocument();
|
|
if (!doc) {
|
|
return;
|
|
}
|
|
|
|
BrowsingContext* bc = doc->GetBrowsingContext();
|
|
if (bc && bc->TouchEventsOverride() == TouchEventsOverride::Enabled &&
|
|
bc->Top()->InRDMPane()) {
|
|
return;
|
|
}
|
|
|
|
// If it is not mouse then it is likely will come as touch event.
|
|
if (!mouseEvent->convertToPointer) {
|
|
return;
|
|
}
|
|
|
|
// Normal synthesized mouse move events are marked as "not convert to
|
|
// pointer" by PresShell::ProcessSynthMouseOrPointerMoveEvent(). However:
|
|
// 1. if the event is synthesized via nsIDOMWindowUtils, it's not marked as
|
|
// so because there is no synthesized pointer move dispatcher. So, we need
|
|
// to dispatch synthesized pointer move from here. This path may be used by
|
|
// mochitests which check the synthesized mouse/pointer boundary event
|
|
// behavior.
|
|
// 2. if the event comes from another process and our content will be moved
|
|
// underneath the mouse cursor. In this case, we should handle preceding
|
|
// ePointerMove.
|
|
// FIXME: In the latter case, we may need to synthesize ePointerMove for the
|
|
// other pointers too.
|
|
if (mouseEvent->IsSynthesized()) {
|
|
if (!StaticPrefs::
|
|
dom_event_pointer_boundary_dispatch_when_layout_change() ||
|
|
!mouseEvent->InputSourceSupportsHover()) {
|
|
return;
|
|
}
|
|
// So, if the pointer is captured, we don't need to dispatch pointer
|
|
// boundary events since pointer boundary events should be fired before
|
|
// gotpointercapture.
|
|
PointerCaptureInfo* const captureInfo =
|
|
GetPointerCaptureInfo(mouseEvent->pointerId);
|
|
if (captureInfo && captureInfo->mOverrideElement) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
pointerMessage = PointerEventHandler::ToPointerEventMessage(mouseEvent);
|
|
if (pointerMessage == eVoidEvent) {
|
|
return;
|
|
}
|
|
#ifdef DEBUG
|
|
if (pointerMessage == ePointerRawUpdate) {
|
|
const nsIContent* const targetContent =
|
|
aEventTargetContent ? aEventTargetContent
|
|
: aEventTargetFrame->GetContent();
|
|
NS_ASSERTION(targetContent, "Where do we want to try to dispatch?");
|
|
if (targetContent) {
|
|
NS_ASSERTION(
|
|
targetContent->IsInComposedDoc(),
|
|
nsPrintfCString("Do we want to dispatch ePointerRawUpdate onto "
|
|
"disconnected content? (targetContent=%s)",
|
|
ToString(*targetContent).c_str())
|
|
.get());
|
|
if (!NeedToDispatchPointerRawUpdate(targetContent->OwnerDoc())) {
|
|
NS_ASSERTION(
|
|
false,
|
|
nsPrintfCString(
|
|
"Did we fail to retarget the document? (targetContent=%s)",
|
|
ToString(*targetContent).c_str())
|
|
.get());
|
|
}
|
|
}
|
|
}
|
|
#endif // #ifdef DEBUG
|
|
WidgetPointerEvent event =
|
|
WidgetPointerEvent::MakeCopyFromMouseEvent(*mouseEvent);
|
|
InitPointerEventFromMouse(&event, mouseEvent, pointerMessage);
|
|
event.convertToPointer = mouseEvent->convertToPointer = false;
|
|
RefPtr<PresShell> shell(aShell);
|
|
if (!aEventTargetFrame) {
|
|
shell = PresShell::GetShellForEventTarget(nullptr, aEventTargetContent);
|
|
if (!shell) {
|
|
return;
|
|
}
|
|
}
|
|
PreHandlePointerEventsPreventDefault(&event, aMouseOrTouchEvent);
|
|
// Dispatch pointer event to the same target which is found by the
|
|
// corresponding mouse event.
|
|
shell->HandleEventWithTarget(&event, aEventTargetFrame, aEventTargetContent,
|
|
aStatus, true, aMouseOrTouchEventTarget);
|
|
PostHandlePointerEventsPreventDefault(shell, &event, aMouseOrTouchEvent);
|
|
// If pointer capture is released, we need to synthesize eMouseMove to
|
|
// dispatch mouse boundary events later.
|
|
mouseEvent->mSynthesizeMoveAfterDispatch |=
|
|
event.mSynthesizeMoveAfterDispatch;
|
|
} else if (aMouseOrTouchEvent->mClass == eTouchEventClass) {
|
|
WidgetTouchEvent* touchEvent = aMouseOrTouchEvent->AsTouchEvent();
|
|
// loop over all touches and dispatch pointer events on each touch
|
|
// copy the event
|
|
pointerMessage = PointerEventHandler::ToPointerEventMessage(touchEvent);
|
|
if (pointerMessage == eVoidEvent) {
|
|
return;
|
|
}
|
|
// If the touch is a single tap release, we will dispatch click or auxclick
|
|
// event later unless it's suppressed. The event target should be the
|
|
// pointer capturing element right now, i.e., at dispatching ePointerUp.
|
|
// Although we cannot know whether the touch is a single tap here, we should
|
|
// store the last touch pointer capturing element. If this is not a single
|
|
// tap end, the stored element will be ignored due to not dispatching click
|
|
// nor auxclick.
|
|
if (touchEvent->mMessage == eTouchEnd &&
|
|
touchEvent->mTouches.Length() == 1) {
|
|
MOZ_ASSERT(!pointerCapturingElementWeak);
|
|
pointerCapturingElementWeak = do_GetWeakReference(
|
|
GetPointerCapturingElement(touchEvent->mTouches[0]->Identifier()));
|
|
}
|
|
RefPtr<PresShell> shell(aShell);
|
|
for (uint32_t i = 0; i < touchEvent->mTouches.Length(); ++i) {
|
|
Touch* touch = touchEvent->mTouches[i];
|
|
if (!TouchManager::ShouldConvertTouchToPointer(touch, touchEvent)) {
|
|
continue;
|
|
}
|
|
|
|
WidgetPointerEvent event(touchEvent->IsTrusted(), pointerMessage,
|
|
touchEvent->mWidget);
|
|
|
|
InitPointerEventFromTouch(event, *touchEvent, *touch);
|
|
event.convertToPointer = touch->convertToPointer = false;
|
|
event.mCoalescedWidgetEvents = touch->mCoalescedWidgetEvents;
|
|
if (aMouseOrTouchEvent->mMessage == eTouchStart) {
|
|
// We already did hit test for touchstart in PresShell. We should
|
|
// dispatch pointerdown to the same target as touchstart.
|
|
nsCOMPtr<nsIContent> content =
|
|
nsIContent::FromEventTargetOrNull(touch->mTarget);
|
|
if (!content) {
|
|
continue;
|
|
}
|
|
|
|
nsIFrame* frame = content->GetPrimaryFrame();
|
|
shell = PresShell::GetShellForEventTarget(frame, content);
|
|
if (!shell) {
|
|
continue;
|
|
}
|
|
|
|
PreHandlePointerEventsPreventDefault(&event, aMouseOrTouchEvent);
|
|
shell->HandleEventWithTarget(&event, frame, content, aStatus, true,
|
|
aMouseOrTouchEventTarget);
|
|
PostHandlePointerEventsPreventDefault(shell, &event,
|
|
aMouseOrTouchEvent);
|
|
} else {
|
|
// We didn't hit test for other touch events. Spec doesn't mention that
|
|
// all pointer events should be dispatched to the same target as their
|
|
// corresponding touch events. Call PresShell::HandleEvent so that we do
|
|
// hit test for pointer events.
|
|
// FIXME: If aDontRetargetEvents is false and the event is fired on
|
|
// different document, we cannot track the pointer event target when
|
|
// it's removed from the tree.
|
|
PreHandlePointerEventsPreventDefault(&event, aMouseOrTouchEvent);
|
|
shell->HandleEvent(aEventTargetFrame, &event, aDontRetargetEvents,
|
|
aStatus);
|
|
PostHandlePointerEventsPreventDefault(shell, &event,
|
|
aMouseOrTouchEvent);
|
|
}
|
|
}
|
|
}
|
|
// If we dispatched an ePointerUp event while an element capturing the
|
|
// pointer, we should keep storing it to consider click, auxclick and
|
|
// contextmenu event target later.
|
|
if (!aShell->IsDestroying() && pointerMessage == ePointerUp &&
|
|
pointerCapturingElementWeak) {
|
|
SetPointerCapturingElementAtLastPointerUp(
|
|
std::move(pointerCapturingElementWeak));
|
|
}
|
|
}
|
|
|
|
/* static */
|
|
void PointerEventHandler::NotifyDestroyPresContext(
|
|
nsPresContext* aPresContext) {
|
|
// Clean up pointer capture info
|
|
for (auto iter = sPointerCaptureList->Iter(); !iter.Done(); iter.Next()) {
|
|
PointerCaptureInfo* data = iter.UserData();
|
|
MOZ_ASSERT(data, "how could we have a null PointerCaptureInfo here?");
|
|
if (data->mPendingElement &&
|
|
data->mPendingElement->GetPresContext(Element::eForComposedDoc) ==
|
|
aPresContext) {
|
|
data->mPendingElement = nullptr;
|
|
}
|
|
if (data->mOverrideElement &&
|
|
data->mOverrideElement->GetPresContext(Element::eForComposedDoc) ==
|
|
aPresContext) {
|
|
data->mOverrideElement = nullptr;
|
|
}
|
|
if (data->Empty()) {
|
|
iter.Remove();
|
|
}
|
|
}
|
|
if (const RefPtr<Element> capturingElementAtLastPointerUp =
|
|
GetPointerCapturingElementAtLastPointerUp()) {
|
|
// The pointer capturing element may belong to different document from the
|
|
// destroying nsPresContext. Check whether the composed document's
|
|
// nsPresContext is the destroying one or not.
|
|
if (capturingElementAtLastPointerUp->GetPresContext(
|
|
Element::eForComposedDoc) == aPresContext) {
|
|
ReleasePointerCapturingElementAtLastPointerUp();
|
|
}
|
|
}
|
|
// Clean up active pointer info.
|
|
// XXX: This was added primarily for touch input. Could this cause any
|
|
// web-compat issue for mouse input in edge cases?
|
|
for (auto iter = sActivePointersIds->Iter(); !iter.Done(); iter.Next()) {
|
|
PointerInfo* data = iter.UserData();
|
|
MOZ_ASSERT(data, "how could we have a null PointerInfo here?");
|
|
if (data->mActiveDocument &&
|
|
data->mActiveDocument->GetPresContext() == aPresContext) {
|
|
iter.Remove();
|
|
}
|
|
}
|
|
}
|
|
|
|
bool PointerEventHandler::IsDragAndDropEnabled(WidgetMouseEvent& aEvent) {
|
|
// We shouldn't start a drag session if the event is synthesized one because
|
|
// aEvent doesn't have enough information for initializing the ePointerCancel.
|
|
if (aEvent.IsSynthesized()) {
|
|
return false;
|
|
}
|
|
// And we should not start with raw update events, which should be used only
|
|
// for notifying web apps of the pointer state changes ASAP.
|
|
if (aEvent.mMessage == ePointerRawUpdate) {
|
|
return false;
|
|
}
|
|
MOZ_ASSERT(aEvent.mMessage != eMouseRawUpdate);
|
|
#ifdef XP_WIN
|
|
if (StaticPrefs::dom_w3c_pointer_events_dispatch_by_pointer_messages()) {
|
|
// WM_POINTER does not support drag and drop, see bug 1692277
|
|
return (aEvent.mInputSource != dom::MouseEvent_Binding::MOZ_SOURCE_PEN &&
|
|
aEvent.mReason != WidgetMouseEvent::eSynthesized); // bug 1692151
|
|
}
|
|
#endif
|
|
return true;
|
|
}
|
|
|
|
/* static */
|
|
uint16_t PointerEventHandler::GetPointerType(uint32_t aPointerId) {
|
|
PointerInfo* pointerInfo = nullptr;
|
|
if (sActivePointersIds->Get(aPointerId, &pointerInfo) && pointerInfo) {
|
|
return pointerInfo->mInputSource;
|
|
}
|
|
return MouseEvent_Binding::MOZ_SOURCE_UNKNOWN;
|
|
}
|
|
|
|
/* static */
|
|
bool PointerEventHandler::GetPointerPrimaryState(uint32_t aPointerId) {
|
|
PointerInfo* pointerInfo = nullptr;
|
|
if (sActivePointersIds->Get(aPointerId, &pointerInfo) && pointerInfo) {
|
|
return pointerInfo->mIsPrimary;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/* static */
|
|
bool PointerEventHandler::HasActiveTouchPointer() {
|
|
for (auto iter = sActivePointersIds->ConstIter(); !iter.Done(); iter.Next()) {
|
|
if (iter.Data()->mFromTouchEvent) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/* static */
|
|
void PointerEventHandler::DispatchGotOrLostPointerCaptureEvent(
|
|
bool aIsGotCapture, const WidgetPointerEvent* aPointerEvent,
|
|
Element* aCaptureTarget) {
|
|
// Don't allow uncomposed element to capture a pointer.
|
|
if (NS_WARN_IF(aIsGotCapture && !aCaptureTarget->IsInComposedDoc())) {
|
|
return;
|
|
}
|
|
const OwningNonNull<Document> targetDoc = *aCaptureTarget->OwnerDoc();
|
|
const RefPtr<PresShell> presShell = targetDoc->GetPresShell();
|
|
if (NS_WARN_IF(!presShell || presShell->IsDestroying())) {
|
|
return;
|
|
}
|
|
|
|
if (!aIsGotCapture && !aCaptureTarget->IsInComposedDoc()) {
|
|
// If the capturing element was removed from the DOM tree, fire
|
|
// ePointerLostCapture at the document.
|
|
PointerEventInit init;
|
|
init.mPointerId = aPointerEvent->pointerId;
|
|
init.mBubbles = true;
|
|
init.mComposed = true;
|
|
ConvertPointerTypeToString(aPointerEvent->mInputSource, init.mPointerType);
|
|
init.mIsPrimary = aPointerEvent->mIsPrimary;
|
|
RefPtr<PointerEvent> event;
|
|
event = PointerEvent::Constructor(aCaptureTarget, u"lostpointercapture"_ns,
|
|
init);
|
|
targetDoc->DispatchEvent(*event);
|
|
return;
|
|
}
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
WidgetPointerEvent localEvent(
|
|
aPointerEvent->IsTrusted(),
|
|
aIsGotCapture ? ePointerGotCapture : ePointerLostCapture,
|
|
aPointerEvent->mWidget);
|
|
|
|
localEvent.AssignPointerEventData(*aPointerEvent, /* aCopyTargets */ true,
|
|
/* aCopyCoalescedEvents */ false);
|
|
DebugOnly<nsresult> rv = presShell->HandleEventWithTarget(
|
|
&localEvent, aCaptureTarget->GetPrimaryFrame(), aCaptureTarget, &status);
|
|
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"DispatchGotOrLostPointerCaptureEvent failed");
|
|
}
|
|
|
|
/* static */
|
|
void PointerEventHandler::MaybeCacheSpoofedPointerID(uint16_t aInputSource,
|
|
uint32_t aPointerId) {
|
|
if (sSpoofedPointerId.isSome() || aInputSource != SPOOFED_POINTER_INTERFACE) {
|
|
return;
|
|
}
|
|
|
|
sSpoofedPointerId.emplace(aPointerId);
|
|
}
|
|
|
|
void PointerEventHandler::UpdateLastPointerId(uint32_t aPointerId,
|
|
EventMessage aEventMessage) {
|
|
if (sLastPointerId && *sLastPointerId == aPointerId) {
|
|
return;
|
|
}
|
|
MOZ_LOG_DEBUG_ONLY(
|
|
EventStateManager::MouseCursorUpdateLogRef(), LogLevel::Info,
|
|
("PointerEventHandler::UpdateLastPointerId(): "
|
|
"Last pointerId (%s) is changed to %u when %s",
|
|
ToString(sLastPointerId).c_str(), aPointerId, ToChar(aEventMessage)));
|
|
sLastPointerId = Some(aPointerId);
|
|
}
|
|
|
|
void PointerEventHandler::MaybeForgetLastPointerId(uint32_t aPointerId,
|
|
EventMessage aEventMessage) {
|
|
if (!sLastPointerId || *sLastPointerId != aPointerId) {
|
|
return;
|
|
}
|
|
sLastPointerId.reset();
|
|
MOZ_LOG_DEBUG_ONLY(EventStateManager::MouseCursorUpdateLogRef(),
|
|
LogLevel::Info,
|
|
("PointerEventHandler::MaybeForgetLastPointerId(): "
|
|
"Last pointerId (%u) is changed to Nothing when %s",
|
|
aPointerId, ToChar(aEventMessage)));
|
|
}
|
|
|
|
} // namespace mozilla
|