Implement elementsFromPoint

Source/core/testing/Internals.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 962 matching lines @@
         return 0;
     }
 
     document->updateLayout();
 
     IntSize radius(width / 2, height / 2);
     IntPoint point(x + radius.width(), y + radius.height());
 
     EventHandler& eventHandler = document->frame()->eventHandler();
     IntPoint hitTestPoint = document->frame()->view()->windowToContents(point);
-    HitTestResult result = eventHandler.hitTestResultAtPoint(hitTestPoint, HitTestRequest::ReadOnly | HitTestRequest::Active, LayoutSize(radius));
+    HitTestResult result = eventHandler.hitTestResultAtPoint(hitTestPoint, HitTestRequest::ReadOnly | HitTestRequest::Active | HitTestRequest::ListBased, LayoutSize(radius));
 
     Node* targetNode = 0;
     IntPoint adjustedPoint;
 
     bool foundNode = eventHandler.bestClickableNodeForHitTestResult(result, adjustedPoint, targetNode);
     if (foundNode)
         return DOMPoint::create(adjustedPoint.x(), adjustedPoint.y());
 
     return 0;
 }
 
 Node* Internals::touchNodeAdjustedToBestClickableNode(long x, long y, long width, long height, Document* document, ExceptionState& exceptionState)
 {
     ASSERT(document);
     if (!document->frame()) {
         exceptionState.throwDOMException(InvalidAccessError, "The document provided is invalid.");
         return 0;
     }
 
     document->updateLayout();
 
     IntSize radius(width / 2, height / 2);
     IntPoint point(x + radius.width(), y + radius.height());
 
     EventHandler& eventHandler = document->frame()->eventHandler();
     IntPoint hitTestPoint = document->frame()->view()->windowToContents(point);
-    HitTestResult result = eventHandler.hitTestResultAtPoint(hitTestPoint, HitTestRequest::ReadOnly | HitTestRequest::Active, LayoutSize(radius));
+    HitTestResult result = eventHandler.hitTestResultAtPoint(hitTestPoint, HitTestRequest::ReadOnly | HitTestRequest::Active | HitTestRequest::ListBased, LayoutSize(radius));
 
     Node* targetNode = 0;
     IntPoint adjustedPoint;
     document->frame()->eventHandler().bestClickableNodeForHitTestResult(result, adjustedPoint, targetNode);
     return targetNode;
 }
 
 DOMPoint* Internals::touchPositionAdjustedToBestContextMenuNode(long x, long y, long width, long height, Document* document, ExceptionState& exceptionState)
 {
     ASSERT(document);
     if (!document->frame()) {
         exceptionState.throwDOMException(InvalidAccessError, "The document provided is invalid.");
         return 0;
     }
 
     document->updateLayout();
 
     IntSize radius(width / 2, height / 2);
     IntPoint point(x + radius.width(), y + radius.height());
 
     EventHandler& eventHandler = document->frame()->eventHandler();
     IntPoint hitTestPoint = document->frame()->view()->windowToContents(point);
-    HitTestResult result = eventHandler.hitTestResultAtPoint(hitTestPoint, HitTestRequest::ReadOnly | HitTestRequest::Active, LayoutSize(radius));
+    HitTestResult result = eventHandler.hitTestResultAtPoint(hitTestPoint, HitTestRequest::ReadOnly | HitTestRequest::Active | HitTestRequest::ListBased, LayoutSize(radius));
 
     Node* targetNode = 0;
     IntPoint adjustedPoint;
 
     bool foundNode = eventHandler.bestContextMenuNodeForHitTestResult(result, adjustedPoint, targetNode);
     if (foundNode)
         return DOMPoint::create(adjustedPoint.x(), adjustedPoint.y());
 
     return DOMPoint::create(x, y);
 }
 
 Node* Internals::touchNodeAdjustedToBestContextMenuNode(long x, long y, long width, long height, Document* document, ExceptionState& exceptionState)
 {
     ASSERT(document);
     if (!document->frame()) {
         exceptionState.throwDOMException(InvalidAccessError, "The document provided is invalid.");
         return 0;
     }
 
     document->updateLayout();
 
     IntSize radius(width / 2, height / 2);
     IntPoint point(x + radius.width(), y + radius.height());
 
     EventHandler& eventHandler = document->frame()->eventHandler();
     IntPoint hitTestPoint = document->frame()->view()->windowToContents(point);
-    HitTestResult result = eventHandler.hitTestResultAtPoint(hitTestPoint, HitTestRequest::ReadOnly | HitTestRequest::Active, LayoutSize(radius));
+    HitTestResult result = eventHandler.hitTestResultAtPoint(hitTestPoint, HitTestRequest::ReadOnly | HitTestRequest::Active | HitTestRequest::ListBased, LayoutSize(radius));
 
     Node* targetNode = 0;
     IntPoint adjustedPoint;
     eventHandler.bestContextMenuNodeForHitTestResult(result, adjustedPoint, targetNode);
     return targetNode;
 }
 
 PassRefPtrWillBeRawPtr<ClientRect> Internals::bestZoomableAreaForTouchPoint(long x, long y, long width, long height, Document* document, ExceptionState& exceptionState)
 {
     ASSERT(document);
@@ skipping 283 matching lines @@
     LocalFrame* frame = document->frame();
     FrameView* frameView = document->view();
     RenderView* renderView = document->renderView();
 
     if (!renderView)
         return nullptr;
 
     float zoomFactor = frame->pageZoomFactor();
     LayoutPoint point = roundedLayoutPoint(FloatPoint(centerX * zoomFactor + frameView->scrollX(), centerY * zoomFactor + frameView->scrollY()));
 
-    HitTestRequest::HitTestRequestType hitType = HitTestRequest::ReadOnly | HitTestRequest::Active;
+    HitTestRequest::HitTestRequestType hitType = HitTestRequest::ReadOnly | HitTestRequest::Active | HitTestRequest::ListBased;
     if (ignoreClipping)
         hitType |= HitTestRequest::IgnoreClipping;
     if (allowChildFrameContent)
         hitType |= HitTestRequest::AllowChildFrameContent;
 
     HitTestRequest request(hitType);
 
     // When ignoreClipping is false, this method returns null for coordinates outside of the viewport.
     if (!request.ignoreClipping() && !frameView->visibleContentRect().intersects(HitTestLocation::rectForPoint(point, topPadding, rightPadding, bottomPadding, leftPadding)))
         return nullptr;
 
     WillBeHeapVector<RefPtrWillBeMember<Node> > matches;
-
-    // Need padding to trigger a rect based hit test, but we want to return a NodeList
-    // so we special case this.
-    if (!topPadding && !rightPadding && !bottomPadding && !leftPadding) {
-        HitTestResult result(point);
-        renderView->hitTest(request, result);
-
-        if (Node* innerNode = result.innerNode()) {
-            if (innerNode->isInShadowTree())
-                innerNode = innerNode->shadowHost();
-            matches.append(innerNode);
-        }
-    } else {
-        HitTestResult result(point, topPadding, rightPadding, bottomPadding, leftPadding);
-        renderView->hitTest(request, result);
-        copyToVector(result.rectBasedTestResult(), matches);
-    }
+    HitTestResult result(point, topPadding, rightPadding, bottomPadding, leftPadding);
+    renderView->hitTest(request, result);
+    copyToVector(result.listBasedTestResult(), matches);
 
     return StaticNodeList::adopt(matches);
 }
 
 bool Internals::hasSpellingMarker(Document* document, int from, int length)
 {
     ASSERT(document);
     if (!document->frame())
         return false;
 
@@ skipping 932 matching lines @@
 {
     ThreadState::current()->schedulePreciseGC();
 }
 
 ValueIterable<int>::IterationSource* Internals::startIteration(ScriptState*, ExceptionState&)
 {
     return new InternalsIterationSource();
 }
 
 } // namespace blink