Add EventHandlerRegistry

LayoutTests/fast/events/event-handler-count.html

-<script src="../../../resources/js-test.js"></script>
+<script src="../../resources/js-test.js"></script>
 <div id='touchtarget' style='width: 50; height: 50'></div>
 <script>
-description("This test checks that we correctly update the touch event handler count as event handlers are added and removed");
+description("This test checks that we correctly update the event handler counts as event handlers are added and removed");
 
 debug("Test addEventListener/removeEventListener on the document.");
 (function() {
     var listener = function() { }
 
     shouldBe('window.internals.touchEventHandlerCount(document)', '0');
     document.addEventListener('touchstart', listener, true);
     shouldBe('window.internals.touchEventHandlerCount(document)', '1');
     document.addEventListener('touchmove', listener, true);
     shouldBe('window.internals.touchEventHandlerCount(document)', '2');
     document.addEventListener('touchstart', listener, false);
     shouldBe('window.internals.touchEventHandlerCount(document)', '3');
     document.removeEventListener('touchmove', listener, true);
     shouldBe('window.internals.touchEventHandlerCount(document)', '2');
     document.removeEventListener('touchstart', listener, true);
     shouldBe('window.internals.touchEventHandlerCount(document)', '1');
 
     // Try removing the capturing listener again.
     document.removeEventListener('touchstart', listener, true);
     shouldBe('window.internals.touchEventHandlerCount(document)', '1');
     document.removeEventListener('touchmove', listener, true);
     shouldBe('window.internals.touchEventHandlerCount(document)', '1');
 
     document.removeEventListener('touchstart', listener, false);
     shouldBe('window.internals.touchEventHandlerCount(document)', '0');
 })();
 
-debug("Test setting touch handlers on the document.");
+debug("Test setting scroll handlers on the document.");
 (function() {
-    shouldBe('window.internals.touchEventHandlerCount(document)', '0');
-    document.ontouchstart = function() { }
-    document.ontouchmove = function() {}
-    document.ontouchend = function() {}
-    document.ontouchcancel = function() {}
-    shouldBe('window.internals.touchEventHandlerCount(document)', '4');
-    document.ontouchstart = function() { }
-    shouldBe('window.internals.touchEventHandlerCount(document)', '4');
-    document.ontouchstart = null;
-    shouldBe('window.internals.touchEventHandlerCount(document)', '3');
-    document.ontouchstart = null;
-    shouldBe('window.internals.touchEventHandlerCount(document)', '3');
-    document.ontouchmove = null;
-    document.ontouchend = null;
-    document.ontouchcancel = null;
-    shouldBe('window.internals.touchEventHandlerCount(document)', '0');
+    shouldBe('window.internals.scrollEventHandlerCount(document)', '0');
+    document.onscroll = function() { }
+    shouldBe('window.internals.scrollEventHandlerCount(document)', '1');
+    document.onscroll = function() { }
+    shouldBe('window.internals.scrollEventHandlerCount(document)', '1');
+    document.onscroll = null;
+    shouldBe('window.internals.scrollEventHandlerCount(document)', '0');
 })();
 
 debug("Test addEventListener/removeEventListener on the window.");
 (function() {
     var listener = function() { }
 
-    shouldBe('window.internals.touchEventHandlerCount(document)', '0');
-    window.addEventListener('touchstart', listener, true);
-    shouldBe('window.internals.touchEventHandlerCount(document)', '1');
-    window.addEventListener('touchmove', listener, true);
-    shouldBe('window.internals.touchEventHandlerCount(document)', '2');
-    window.addEventListener('touchstart', listener, false);
-    shouldBe('window.internals.touchEventHandlerCount(document)', '3');
-    window.removeEventListener('touchmove', listener, true);
-    shouldBe('window.internals.touchEventHandlerCount(document)', '2');
-    window.removeEventListener('touchstart', listener, true);
-    shouldBe('window.internals.touchEventHandlerCount(document)', '1');
+    shouldBe('window.internals.wheelEventHandlerCount(document)', '0');
+    window.addEventListener('mousewheel', listener, true);
+    shouldBe('window.internals.wheelEventHandlerCount(document)', '1');
+    window.addEventListener('mousewheel', listener, false);
+    shouldBe('window.internals.wheelEventHandlerCount(document)', '2');
+    window.removeEventListener('mousewheel', listener, true);
+    shouldBe('window.internals.wheelEventHandlerCount(document)', '1');
 
     // Try removing the capturing listener again.
-    window.removeEventListener('touchstart', listener, true);
-    shouldBe('window.internals.touchEventHandlerCount(document)', '1');
-    window.removeEventListener('touchmove', listener, true);
-    shouldBe('window.internals.touchEventHandlerCount(document)', '1');
+    window.removeEventListener('mousewheel', listener, true);
+    shouldBe('window.internals.wheelEventHandlerCount(document)', '1');
 
-    window.removeEventListener('touchstart', listener, false);
-    shouldBe('window.internals.touchEventHandlerCount(document)', '0');
+    window.removeEventListener('mousewheel', listener, false);
+    shouldBe('window.internals.wheelEventHandlerCount(document)', '0');
 })();
 
 debug("Test setting touch handlers on the window.");
 (function() {
     shouldBe('window.internals.touchEventHandlerCount(document)', '0');
     window.ontouchstart = function() { }
     window.ontouchmove = function() {}
     window.ontouchend = function() {}
     window.ontouchcancel = function() {}
     shouldBe('window.internals.touchEventHandlerCount(document)', '4');
     window.ontouchstart = function() { }
     shouldBe('window.internals.touchEventHandlerCount(document)', '4');
     window.ontouchstart = null;
     shouldBe('window.internals.touchEventHandlerCount(document)', '3');
     window.ontouchstart = null;
     shouldBe('window.internals.touchEventHandlerCount(document)', '3');
     window.ontouchmove = null;
     window.ontouchend = null;
     window.ontouchcancel = null;
     shouldBe('window.internals.touchEventHandlerCount(document)', '0');
 })();
 
+debug("Test setting onmousewheel on the window.");
+(function() {
+    shouldBe('window.internals.wheelEventHandlerCount(document)', '0');
+    window.onmousewheel = function() { }
+    shouldBe('window.internals.wheelEventHandlerCount(document)', '1');
+    window.onmousewheel = function() { }
+    shouldBe('window.internals.wheelEventHandlerCount(document)', '1');
+    window.onmousewheel = null;
+    shouldBe('window.internals.wheelEventHandlerCount(document)', '0');
+})();
+
+debug("Test setting onscroll on the window.");
+(function() {
+    shouldBe('window.internals.scrollEventHandlerCount(document)', '0');
+    window.onscroll = function() { }
+    shouldBe('window.internals.scrollEventHandlerCount(document)', '1');
+    window.onscroll = function() { }
+    shouldBe('window.internals.scrollEventHandlerCount(document)', '1');
+    window.onscroll = null;
+    shouldBe('window.internals.scrollEventHandlerCount(document)', '0');
+})();
+
 debug("Test addEventListener/removeEventListener on a div.");
 (function() {
     var listener = function() { }
     var div = document.getElementById('touchtarget');
 
     shouldBe('window.internals.touchEventHandlerCount(document)', '0');
     div.addEventListener('touchstart', listener, true);
     shouldBe('window.internals.touchEventHandlerCount(document)', '1');
     div.addEventListener('touchmove', listener, true);
     shouldBe('window.internals.touchEventHandlerCount(document)', '2');
@@ skipping 29 matching lines @@
     div.ontouchstart = null;
     shouldBe('window.internals.touchEventHandlerCount(document)', '3');
     div.ontouchstart = null;
     shouldBe('window.internals.touchEventHandlerCount(document)', '3');
     div.ontouchmove = null;
     div.ontouchend = null;
     div.ontouchcancel = null;
     shouldBe('window.internals.touchEventHandlerCount(document)', '0');
 })();
 
-debug("Test redudant addEventListener on a div.");
+debug("Test redundant addEventListener on a div.");

[Rick Byers, 2014/04/03 15:33:19]

heh, thanks for fixing my typo :-)

 (function() {
     var listener = function() { }
     var div = document.getElementById('touchtarget');
 
     shouldBe('window.internals.touchEventHandlerCount(document)', '0');
     div.addEventListener('touchstart', listener, false);
     shouldBe('window.internals.touchEventHandlerCount(document)', '1');
     div.addEventListener('touchstart', listener, false);
     shouldBe('window.internals.touchEventHandlerCount(document)', '1');
 
@@ skipping 81 matching lines @@
     shouldBe('window.internals.touchEventHandlerCount(nestedDocument)', '3');
     shouldBe('window.internals.touchEventHandlerCount(document)', '2');
 
     nestedDocument.write('<script>window.ontouchstart=undefined</' + 'script>\n');
     shouldBe('window.internals.touchEventHandlerCount(nestedDocument)', '2');
     shouldBe('window.internals.touchEventHandlerCount(document)', '2');
 
     nestedDocument.write('<script>document.addEventListener("touchmove", function(){});</' + 'script>\n');
     shouldBe('window.internals.touchEventHandlerCount(nestedDocument)', '3');
     shouldBe('window.internals.touchEventHandlerCount(document)', '2');
-    
+
     nestedDocument.write('<script>document.getElementById("twoHandlers").remove();</' + 'script>\n');
     gc();
     shouldBe('window.internals.touchEventHandlerCount(nestedDocument)', '1');
     shouldBe('window.internals.touchEventHandlerCount(document)', '2');
-    nestedDocument.close();    
+    nestedDocument.close();
 
     touchtarget.removeChild(iframe);
     shouldBe('window.internals.touchEventHandlerCount(document)', '1');
 })();
+
 </script>
 </body>