Bug 1420589 Part4: Revise PointerEventHandler utilities. r=smaug.

MozReview-Commit-ID: DpGrbbYJbzh
2017-12-09 08:56:11 +08:00
parent 0ae169a09e
commit 07f90c015e
3 changed files with 31 additions and 28 deletions
--- a/layout/base/PresShell.cpp
+++ b/layout/base/PresShell.cpp
@@ -7186,7 +7186,12 @@ PresShell::HandleEvent(nsIFrame* aFrame,
      }
    }

-    frame = PointerEventHandler::GetPointerCapturingFrame(frame, aEvent);
+    nsIFrame* pointerCapturingFrame =
+      PointerEventHandler::GetPointerCapturingFrame(aEvent);
+
+    if (pointerCapturingFrame) {
+      frame = pointerCapturingFrame;
+    }

    // Suppress mouse event if it's being targeted at an element inside
    // a document which needs events suppressed