Fix issue with elementFromPoint when null

Fixes #434
googlearchive · May 14, 2014 · d67c3b1 · d67c3b1
1 parent b760852
commit d67c3b1
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diff --git a/src/wrappers/events.js b/src/wrappers/events.js
@@ -826,6 +826,8 @@
     scope.renderAllPending();
 
     var element = wrap(originalElementFromPoint.call(document.impl, x, y));
+    if (!element)
+      return null;
     var path = getEventPath(element, null);
     return eventRetargetting(path, self);
   }

diff --git a/test/js/Document.js b/test/js/Document.js
@@ -315,6 +315,13 @@ htmlSuite('Document', function() {
     assert.equal(doc.elementFromPoint(5, 5), div);
   });
 
+  test('elementFromPoint null', function() {
+    assert.isNull(document.elementFromPoint(-9999, -9999));
+
+    var doc = wrap(document);
+    assert.isNull(doc.elementFromPoint(-9999, -9999));
+  });
+
   test('document.contains', function() {
     assert.isTrue(document.contains(document.body));
     assert.isTrue(document.contains(document.querySelector('body')));