[inert] Remove hit test retargeting for inert

r942180 made inert nodes behave as 'pointer-events: none', as resolved by the CSSWG in w3c/csswg-drafts#6685 Then, the magic hit test retargeting for inert is no longer needed. Bug: 692360 Change-Id: I950f0967f093d6acb20877e049fb1bcf75a88de1 Cq-Do-Not-Cancel-Tryjobs: true Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3257651 Commit-Queue: Oriol Brufau <[email protected]> Reviewed-by: Koji Ishii <[email protected]> Reviewed-by: Nektarios Paisios <[email protected]> Cr-Commit-Position: refs/heads/main@{#942823}
blueboxd · Nov 17, 2021 · e2b9c07 · e2b9c07
1 parent 6f5dc95
commit e2b9c07
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Showing 18 changed files with 35 additions and 114 deletions.
diff --git a/third_party/blink/renderer/core/editing/selection_controller.cc b/third_party/blink/renderer/core/editing/selection_controller.cc
@@ -1031,8 +1031,7 @@ void SelectionController::HandleMouseDraggedEvent(
   if (!Selection().IsAvailable())
     return;
   if (selection_state_ != SelectionState::kExtendedSelection) {
-    HitTestRequest request(HitTestRequest::kReadOnly | HitTestRequest::kActive |
-                           HitTestRequest::kRetargetForInert);
+    HitTestRequest request(HitTestRequest::kReadOnly | HitTestRequest::kActive);
     HitTestLocation location(mouse_down_pos);
     HitTestResult result(request, location);
     frame_->GetDocument()->GetLayoutView()->HitTest(location, result);
@@ -1055,8 +1054,7 @@ void SelectionController::UpdateSelectionForMouseDrag(
     return;
 
   HitTestRequest request(HitTestRequest::kReadOnly | HitTestRequest::kActive |
-                         HitTestRequest::kMove |
-                         HitTestRequest::kRetargetForInert);
+                         HitTestRequest::kMove);
   HitTestLocation location(last_known_mouse_position_in_root_frame);
   HitTestResult result(request, location);
   layout_view->HitTest(location, result);

diff --git a/third_party/blink/renderer/core/editing/visible_units.cc b/third_party/blink/renderer/core/editing/visible_units.cc
@@ -441,8 +441,7 @@ PositionWithAffinity PositionForContentsPointRespectingEditingBoundary(
     LocalFrame* frame) {
   HitTestRequest request = HitTestRequest::kMove | HitTestRequest::kReadOnly |
                            HitTestRequest::kActive |
-                           HitTestRequest::kIgnoreClipping |
-                           HitTestRequest::kRetargetForInert;
+                           HitTestRequest::kIgnoreClipping;
   HitTestLocation location(contents_point);
   HitTestResult result(request, location);
   frame->GetDocument()->GetLayoutView()->HitTest(location, result);

diff --git a/third_party/blink/renderer/core/input/event_handler.cc b/third_party/blink/renderer/core/input/event_handler.cc
@@ -785,8 +785,7 @@ WebInputEventResult EventHandler::HandleMousePressEvent(
   if (!frame_->View())
     return WebInputEventResult::kNotHandled;
 
-  HitTestRequest request(HitTestRequest::kActive |
-                         HitTestRequest::kRetargetForInert);
+  HitTestRequest request(HitTestRequest::kActive);
   // Save the document point we generate in case the window coordinate is
   // invalidated by what happens when we dispatch the event.
   PhysicalOffset document_point = frame_->View()->ConvertFromRootFrame(
@@ -887,8 +886,7 @@ WebInputEventResult EventHandler::HandleMousePressEvent(
   GetSelectionController().InitializeSelectionState();
 
   HitTestResult hit_test_result = event_handling_util::HitTestResultInFrame(
-      frame_, HitTestLocation(document_point),
-      HitTestRequest::kReadOnly | HitTestRequest::kRetargetForInert);
+      frame_, HitTestLocation(document_point), HitTestRequest::kReadOnly);
   InputDeviceCapabilities* source_capabilities =
       frame_->DomWindow()->GetInputDeviceCapabilities()->FiresTouchEvents(
           mouse_event.FromTouch());
@@ -916,8 +914,7 @@ WebInputEventResult EventHandler::HandleMousePressEvent(
   if (event_result == WebInputEventResult::kNotHandled) {
     if (ShouldRefetchEventTarget(mev)) {
       HitTestRequest read_only_request(HitTestRequest::kReadOnly |
-                                       HitTestRequest::kActive |
-                                       HitTestRequest::kRetargetForInert);
+                                       HitTestRequest::kActive);
       mev = frame_->GetDocument()->PerformMouseEventHitTest(
           read_only_request, document_point, mouse_event);
     }
@@ -1032,8 +1029,7 @@ WebInputEventResult EventHandler::HandleMouseMoveOrLeaveEvent(
     return WebInputEventResult::kHandledSystem;
   }
 
-  HitTestRequest::HitTestRequestType hit_type =
-      HitTestRequest::kMove | HitTestRequest::kRetargetForInert;
+  HitTestRequest::HitTestRequestType hit_type = HitTestRequest::kMove;
   if (mouse_event_manager_->MousePressed()) {
     hit_type |= HitTestRequest::kActive;
   }
@@ -1203,8 +1199,7 @@ WebInputEventResult EventHandler::HandleMouseReleaseEvent(
 
   // Mouse events simulated from touch should not hit-test again.
   DCHECK(!mouse_event.FromTouch());
-  HitTestRequest::HitTestRequestType hit_type =
-      HitTestRequest::kRelease | HitTestRequest::kRetargetForInert;
+  HitTestRequest::HitTestRequestType hit_type = HitTestRequest::kRelease;
   HitTestRequest request(hit_type);
   MouseEventWithHitTestResults mev = GetMouseEventTarget(request, mouse_event);
   LocalFrame* subframe = event_handling_util::GetTargetSubframe(
@@ -1258,8 +1253,7 @@ WebInputEventResult EventHandler::UpdateDragAndDrop(
   if (!frame_->View())
     return event_result;
 
-  HitTestRequest request(HitTestRequest::kReadOnly |
-                         HitTestRequest::kRetargetForInert);
+  HitTestRequest request(HitTestRequest::kReadOnly);
   MouseEventWithHitTestResults mev =
       event_handling_util::PerformMouseEventHitTest(frame_, request, event);
 
@@ -1945,7 +1939,6 @@ GestureEventWithHitTestResults EventHandler::HitTestResultForGestureEvent(
   // disabled). Note that we don't yet apply hover/active state here because
   // we need to resolve touch adjustment first so that we apply hover/active
   // it to the final adjusted node.
-  hit_type |= HitTestRequest::kRetargetForInert;
   hit_type |= HitTestRequest::kReadOnly;
   WebGestureEvent adjusted_event = gesture_event;
   LayoutSize hit_rect_size;
@@ -2062,8 +2055,7 @@ WebInputEventResult EventHandler::SendContextMenuEvent(
 
   PhysicalOffset position_in_contents(
       v->ConvertFromRootFrame(FlooredIntPoint(event.PositionInRootFrame())));
-  HitTestRequest request(HitTestRequest::kActive |
-                         HitTestRequest::kRetargetForInert);
+  HitTestRequest request(HitTestRequest::kActive);
   MouseEventWithHitTestResults mev =
       frame_->GetDocument()->PerformMouseEventHitTest(
           request, position_in_contents, event);
@@ -2185,8 +2177,7 @@ WebInputEventResult EventHandler::ShowNonLocatedContextMenu(
           .origin();
 
   // Use the focused node as the target for hover and active.
-  HitTestRequest request(HitTestRequest::kActive |
-                         HitTestRequest::kRetargetForInert);
+  HitTestRequest request(HitTestRequest::kActive);
   HitTestLocation location(location_in_root_frame);
   HitTestResult result(request, location);
   result.SetInnerNode(focused_element ? static_cast<Node*>(focused_element)
@@ -2272,8 +2263,7 @@ void EventHandler::HoverTimerFired(TimerBase*) {
 
   if (auto* layout_object = frame_->ContentLayoutObject()) {
     if (LocalFrameView* view = frame_->View()) {
-      HitTestRequest request(HitTestRequest::kMove |
-                             HitTestRequest::kRetargetForInert);
+      HitTestRequest request(HitTestRequest::kMove);
       HitTestLocation location(view->ViewportToFrame(
           mouse_event_manager_->LastKnownMousePositionInViewport()));
       HitTestResult result(request, location);
@@ -2291,8 +2281,7 @@ void EventHandler::ActiveIntervalTimerFired(TimerBase*) {
     // FIXME: Enable condition when http://crbug.com/226842 lands
     // m_lastDeferredTapElement.get() == m_frame->document()->activeElement()
     HitTestRequest request(HitTestRequest::kTouchEvent |
-                           HitTestRequest::kRelease |
-                           HitTestRequest::kRetargetForInert);
+                           HitTestRequest::kRelease);
     frame_->GetDocument()->UpdateHoverActiveState(
         request.Active(), !request.Move(), last_deferred_tap_element_.Get());
   }
@@ -2325,8 +2314,7 @@ void EventHandler::DragSourceEndedAt(
     ui::mojom::blink::DragOperation operation) {
   // Asides from routing the event to the correct frame, the hit test is also an
   // opportunity for Layer to update the :hover and :active pseudoclasses.
-  HitTestRequest request(HitTestRequest::kRelease |
-                         HitTestRequest::kRetargetForInert);
+  HitTestRequest request(HitTestRequest::kRelease);
   MouseEventWithHitTestResults mev =
       event_handling_util::PerformMouseEventHitTest(frame_, request, event);
 

diff --git a/third_party/blink/renderer/core/input/event_handler.h b/third_party/blink/renderer/core/input/event_handler.h
@@ -100,9 +100,8 @@ class CORE_EXPORT EventHandler final : public GarbageCollected<EventHandler> {
 
   HitTestResult HitTestResultAtLocation(
       const HitTestLocation&,
-      HitTestRequest::HitTestRequestType hit_type =
-          HitTestRequest::kReadOnly | HitTestRequest::kActive |
-          HitTestRequest::kRetargetForInert,
+      HitTestRequest::HitTestRequestType hit_type = HitTestRequest::kReadOnly |
+                                                    HitTestRequest::kActive,
       const LayoutObject* stop_node = nullptr,
       bool no_lifecycle_update = false);
 

diff --git a/third_party/blink/renderer/core/input/gesture_manager.cc b/third_party/blink/renderer/core/input/gesture_manager.cc
@@ -85,8 +85,7 @@ void GestureManager::Trace(Visitor* visitor) const {
 
 HitTestRequest::HitTestRequestType GestureManager::GetHitTypeForGestureType(
     WebInputEvent::Type type) {
-  HitTestRequest::HitTestRequestType hit_type =
-      HitTestRequest::kTouchEvent | HitTestRequest::kRetargetForInert;
+  HitTestRequest::HitTestRequestType hit_type = HitTestRequest::kTouchEvent;
   switch (type) {
     case WebInputEvent::Type::kGestureShowPress:
     case WebInputEvent::Type::kGestureTapUnconfirmed:

diff --git a/third_party/blink/renderer/core/input/mouse_event_manager.cc b/third_party/blink/renderer/core/input/mouse_event_manager.cc
@@ -894,8 +894,7 @@ bool MouseEventManager::HandleDrag(const MouseEventWithHitTestResults& event,
     return false;
 
   if (mouse_down_may_start_drag_) {
-    HitTestRequest request(HitTestRequest::kReadOnly |
-                           HitTestRequest::kRetargetForInert);
+    HitTestRequest request(HitTestRequest::kReadOnly);
     HitTestLocation location(mouse_down_pos_);
     HitTestResult result(request, location);
     frame_->ContentLayoutObject()->HitTest(location, result);

diff --git a/third_party/blink/renderer/core/input/mouse_wheel_event_manager.cc b/third_party/blink/renderer/core/input/mouse_wheel_event_manager.cc
@@ -157,8 +157,7 @@ Node* MouseWheelEventManager::FindTargetNode(const WebMouseWheelEvent& event,
   PhysicalOffset v_point(
       view->ConvertFromRootFrame(FlooredIntPoint(event.PositionInRootFrame())));
 
-  HitTestRequest request(HitTestRequest::kReadOnly |
-                         HitTestRequest::kRetargetForInert);
+  HitTestRequest request(HitTestRequest::kReadOnly);
   HitTestLocation location(v_point);
   HitTestResult result(request, location);
   doc->GetLayoutView()->HitTest(location, result);

diff --git a/third_party/blink/renderer/core/input/pointer_event_manager.cc b/third_party/blink/renderer/core/input/pointer_event_manager.cc
@@ -364,8 +364,7 @@ void PointerEventManager::AdjustTouchPointerEvent(
 
   HitTestRequest::HitTestRequestType hit_type =
       HitTestRequest::kTouchEvent | HitTestRequest::kReadOnly |
-      HitTestRequest::kActive | HitTestRequest::kListBased |
-      HitTestRequest::kRetargetForInert;
+      HitTestRequest::kActive | HitTestRequest::kListBased;
   LocalFrame& root_frame = frame_->LocalFrameRoot();
   // TODO(szager): Shouldn't this be PositionInScreen() ?
   PhysicalOffset hit_test_point = PhysicalOffset::FromFloatPointRound(
@@ -422,9 +421,9 @@ PointerEventManager::ComputePointerEventTarget(
   // before firing the event.
   if (web_pointer_event.GetType() == WebInputEvent::Type::kPointerDown ||
       !pending_pointer_capture_target_.Contains(pointer_id)) {
-    HitTestRequest::HitTestRequestType hit_type =
-        HitTestRequest::kTouchEvent | HitTestRequest::kReadOnly |
-        HitTestRequest::kActive | HitTestRequest::kRetargetForInert;
+    HitTestRequest::HitTestRequestType hit_type = HitTestRequest::kTouchEvent |
+                                                  HitTestRequest::kReadOnly |
+                                                  HitTestRequest::kActive;
     HitTestLocation location(frame_->View()->ConvertFromRootFrame(
         PhysicalOffset::FromFloatPointRound(
             FloatPoint(web_pointer_event.PositionInWidget()))));
@@ -861,8 +860,7 @@ WebInputEventResult PointerEventManager::SendMousePointerEvent(
       // test to find the new target.
       if (pointer_capture_target_.find(pointer_event->pointerId()) !=
           pointer_capture_target_.end()) {
-        HitTestRequest::HitTestRequestType hit_type =
-            HitTestRequest::kRelease | HitTestRequest::kRetargetForInert;
+        HitTestRequest::HitTestRequestType hit_type = HitTestRequest::kRelease;
         HitTestRequest request(hit_type);
         MouseEventWithHitTestResults mev =
             event_handling_util::PerformMouseEventHitTest(frame_, request,

diff --git a/third_party/blink/renderer/core/input/scroll_manager.cc b/third_party/blink/renderer/core/input/scroll_manager.cc
@@ -1051,8 +1051,7 @@ WebInputEventResult ScrollManager::HandleGestureScrollEvent(
     LocalFrameView* view = frame_->View();
     PhysicalOffset view_point(view->ConvertFromRootFrame(
         FlooredIntPoint(gesture_event.PositionInRootFrame())));
-    HitTestRequest request(HitTestRequest::kReadOnly |
-                           HitTestRequest::kRetargetForInert);
+    HitTestRequest request(HitTestRequest::kReadOnly);
     HitTestLocation location(view_point);
     HitTestResult result(request, location);
     document->GetLayoutView()->HitTest(location, result);

diff --git a/third_party/blink/renderer/core/layout/hit_test_request.h b/third_party/blink/renderer/core/layout/hit_test_request.h
@@ -45,16 +45,15 @@ class HitTestRequest {
     kAllowChildFrameContent = 1 << 8,
     kChildFrameHitTest = 1 << 9,
     kIgnorePointerEventsNone = 1 << 10,
-    kRetargetForInert = 1 << 11,
     // Collect a list of nodes instead of just one.
     // (This is for elementsFromPoint and rect-based tests).
-    kListBased = 1 << 12,
+    kListBased = 1 << 11,
     // When using list-based testing, this flag causes us to continue hit
     // testing after a hit has been found.
-    kPenetratingList = 1 << 13,
-    kAvoidCache = 1 << 14,
-    kIgnoreZeroOpacityObjects = 1 << 15,
-    kHitTestVisualOverflow = 1 << 16,
+    kPenetratingList = 1 << 12,
+    kAvoidCache = 1 << 13,
+    kIgnoreZeroOpacityObjects = 1 << 14,
+    kHitTestVisualOverflow = 1 << 15,
   };
 
   typedef unsigned HitTestRequestType;
@@ -87,7 +86,6 @@ class HitTestRequest {
   bool IgnorePointerEventsNone() const {
     return request_type_ & kIgnorePointerEventsNone;
   }
-  bool RetargetForInert() const { return request_type_ & kRetargetForInert; }
   bool ListBased() const { return request_type_ & kListBased; }
   bool PenetratingList() const { return request_type_ & kPenetratingList; }
   bool AvoidCache() const { return request_type_ & kAvoidCache; }

diff --git a/third_party/blink/renderer/core/layout/hit_test_result.cc b/third_party/blink/renderer/core/layout/hit_test_result.cc
@@ -71,7 +71,6 @@ HitTestResult::HitTestResult(const HitTestResult& other)
     : hit_test_request_(other.hit_test_request_),
       cacheable_(other.cacheable_),
       inner_node_(other.InnerNode()),
-      inert_node_(other.InertNode()),
       inner_element_(other.InnerElement()),
       inner_possibly_pseudo_node_(other.inner_possibly_pseudo_node_),
       point_in_inner_node_frame_(other.point_in_inner_node_frame_),
@@ -98,7 +97,7 @@ HitTestResult& HitTestResult::operator=(const HitTestResult& other) {
 
 bool HitTestResult::EqualForCacheability(const HitTestResult& other) const {
   return hit_test_request_.EqualForCacheability(other.hit_test_request_) &&
-         inner_node_ == other.InnerNode() && inert_node_ == other.InertNode() &&
+         inner_node_ == other.InnerNode() &&
          inner_element_ == other.InnerElement() &&
          inner_possibly_pseudo_node_ == other.InnerPossiblyPseudoNode() &&
          point_in_inner_node_frame_ == other.point_in_inner_node_frame_ &&
@@ -115,7 +114,6 @@ void HitTestResult::CacheValues(const HitTestResult& other) {
 
 void HitTestResult::PopulateFromCachedResult(const HitTestResult& other) {
   inner_node_ = other.InnerNode();
-  inert_node_ = other.InertNode();
   inner_element_ = other.InnerElement();
   inner_possibly_pseudo_node_ = other.InnerPossiblyPseudoNode();
   point_in_inner_node_frame_ = other.point_in_inner_node_frame_;
@@ -137,7 +135,6 @@ void HitTestResult::PopulateFromCachedResult(const HitTestResult& other) {
 void HitTestResult::Trace(Visitor* visitor) const {
   visitor->Trace(hit_test_request_);
   visitor->Trace(inner_node_);
-  visitor->Trace(inert_node_);
   visitor->Trace(inner_element_);
   visitor->Trace(inner_possibly_pseudo_node_);
   visitor->Trace(inner_url_element_);
@@ -303,24 +300,6 @@ void HitTestResult::SetInnerNode(Node* n) {
     return;
   }
 
-  if (RuntimeEnabledFeatures::InertAttributeEnabled()) {
-    // TODO(crbug.com/692360): Remove inert retargeting, and instead use
-    // 'pointer-events: none'.
-    if (GetHitTestRequest().RetargetForInert()) {
-      if (n->IsInert() && n != n->GetDocument().documentElement()) {
-        if (!inert_node_)
-          inert_node_ = n;
-
-        return;
-      }
-
-      if (inert_node_ && n != inert_node_ &&
-          !n->IsShadowIncludingInclusiveAncestorOf(*inert_node_)) {
-        return;
-      }
-    }
-  }
-
   inner_possibly_pseudo_node_ = n;
   if (auto* pseudo_element = DynamicTo<PseudoElement>(n))
     n = pseudo_element->InnerNodeForHitTesting();
@@ -335,14 +314,6 @@ void HitTestResult::SetInnerNode(Node* n) {
     inner_element_ = FlatTreeTraversal::ParentElement(*inner_node_);
 }
 
-void HitTestResult::SetInertNode(Node* n) {
-  // Don't overwrite an existing value for inert_node_
-  if (inert_node_)
-    DCHECK(n == inert_node_);
-
-  inert_node_ = n;
-}
-
 void HitTestResult::SetURLElement(Element* n) {
   inner_url_element_ = n;
 }
@@ -520,10 +491,6 @@ std::tuple<bool, ListBasedHitTestBehavior>
 HitTestResult::AddNodeToListBasedTestResultInternal(
     Node* node,
     const HitTestLocation& location) {
-  // If we are in the process of retargeting for `inert`, continue.
-  if (GetHitTestRequest().RetargetForInert() && InertNode() && !InnerNode())
-    return std::make_tuple(false, kContinueHitTesting);
-
   // If not a list-based test, stop testing because the hit has been found.
   if (!GetHitTestRequest().ListBased())
     return std::make_tuple(false, kStopHitTesting);
@@ -601,9 +568,6 @@ void HitTestResult::Append(const HitTestResult& other) {
     canvas_region_id_ = other.CanvasRegionId();
   }
 
-  if (!inert_node_ && other.InertNode())
-    SetInertNode(other.InertNode());
-
   if (other.list_based_test_result_) {
     NodeSet& set = MutableListBasedTestResult();
     for (NodeSet::const_iterator it = other.list_based_test_result_->begin(),

diff --git a/third_party/blink/renderer/core/layout/hit_test_result.h b/third_party/blink/renderer/core/layout/hit_test_result.h
@@ -85,7 +85,6 @@ class CORE_EXPORT HitTestResult {
   // FIXME: Make these less error-prone for rect-based hit tests (center point
   // or fail).
   Node* InnerNode() const { return inner_node_.Get(); }
-  Node* InertNode() const { return inert_node_.Get(); }
   Node* InnerPossiblyPseudoNode() const {
     return inner_possibly_pseudo_node_.Get();
   }
@@ -141,7 +140,6 @@ class CORE_EXPORT HitTestResult {
   const HitTestRequest& GetHitTestRequest() const { return hit_test_request_; }
 
   void SetInnerNode(Node*);
-  void SetInertNode(Node*);
   HTMLAreaElement* ImageAreaForImage() const;
   void SetURLElement(Element*);
   void SetScrollbar(Scrollbar*);
@@ -213,7 +211,6 @@ class CORE_EXPORT HitTestResult {
   bool cacheable_;
 
   Member<Node> inner_node_;
-  Member<Node> inert_node_;
   // This gets calculated in the first call to InnerElement function.
   Member<Element> inner_element_;
   Member<Node> inner_possibly_pseudo_node_;

diff --git a/third_party/blink/renderer/core/layout/layout_embedded_content.cc b/third_party/blink/renderer/core/layout/layout_embedded_content.cc
@@ -185,7 +185,6 @@ bool LayoutEmbeddedContent::NodeAtPoint(
           result.GetHitTestRequest().GetStopNode());
       HitTestResult child_frame_result(new_hit_test_request,
                                        new_hit_test_location);
-      child_frame_result.SetInertNode(result.InertNode());
 
       // The frame's layout and style must be up to date if we reach here.
       bool is_inside_child_frame = child_layout_view->HitTestNoLifecycleUpdate(

diff --git a/third_party/blink/renderer/core/layout/svg/layout_svg_foreign_object.cc b/third_party/blink/renderer/core/layout/svg/layout_svg_foreign_object.cc
@@ -161,7 +161,6 @@ bool LayoutSVGForeignObject::NodeAtPointFromSVG(
   // element, but PaintLayer::HitTestLayer assumes it has not been.
   HitTestLocation local_without_offset(*local_location, -PhysicalLocation());
   HitTestResult layer_result(result.GetHitTestRequest(), local_without_offset);
-  layer_result.SetInertNode(result.InertNode());
   bool retval = Layer()->HitTest(local_without_offset, layer_result,
                                  PhysicalRect(PhysicalRect::InfiniteIntRect()));