Remove interactive element filter from SimpleEventPlugin, move over t…

…o tree traversal

src/renderers/dom/shared/eventPlugins/SimpleEventPlugin.js

@@ -138,23 +138,6 @@ var topLevelEventsToDispatchConfig: {[key: TopLevelTypes]: DispatchConfig} = {};
   topLevelEventsToDispatchConfig[topEvent] = type;
 });
 
-function isInteractive(tag) {
-  return (
-    tag === 'BUTTON' || tag === 'INPUT' ||
-    tag === 'SELECT' || tag === 'TEXTAREA'
-  );
-}
-
-function shouldPreventMouseEvent(node) {
-  if (node) {
-    if (node.disabled) {
-      return isInteractive(node.tagName)
-    }
-  }
-
-  return false;
-}
-
 var SimpleEventPlugin: PluginModule<MouseEvent> = {
 
   eventTypes: eventTypes,
@@ -230,11 +213,6 @@ var SimpleEventPlugin: PluginModule<MouseEvent> = {
       case 'topMouseDown':
       case 'topMouseMove':
       case 'topMouseUp':
-        // Disabled elements should not respond to mouse events
-        if (shouldPreventMouseEvent(nativeEventTarget)) {
-          return null;
-        }
-        /* falls through */
       case 'topMouseOut':
       case 'topMouseOver':
       case 'topContextMenu':

src/renderers/shared/shared/ReactTreeTraversal.js

@@ -111,21 +111,27 @@ function shouldIgnoreElement(inst) {
 }
 
 function traverseTwoPhase(inst, fn, arg) {
+  // Do not traverse an tree that originates with a disabled
+  // element
+  if (shouldIgnoreElement(inst)) {
+    return
+  }
+
   var path = [];
   while (inst) {
     path.push(inst);
     inst = getParent(inst);
   }
 
   var i;
-  var disabledParent = false;
+  var disabled = false;
   // walking from parent to child
   for (i = path.length; i-- > 0;) {
-    // Check to see if we are within a disabled tree
-    disabledParent = disabledParent || shouldIgnoreElement(path[i])
-    // If we are within a disabled tree, and the current element
-    // is active, remove the item from the tree
-    if (disabledParent && isInteractive(path[i])) {
+    // Are we currently, our about to be, within a disabled tree
+    disabled = disabled || shouldIgnoreElement(path[i])
+    // If so, remove the current element from traversion if it
+    // is interactive
+    if (disabled && isInteractive(path[i])) {
       path.splice(i, 1);
     }
   }