Refactor events feature

Allow behaviors to easily override event listener creation

Expose a Behavior

Use a coarse mouse on/off feature for handling synthetic mouse events and ghost clicks

Implement all in the burndown list

Add a smoke test

only handle one finger with touchevents

Make sure track state can be "start" for mouse

Minor fix for touchevent single-finger check

bolt basic gestures onto core

add tests for gesture private data tracking

Author: dfreedm

polymer.html

@@ -12,6 +12,7 @@
 
 <link rel="import" href="src/standard/annotations.html">
 <link rel="import" href="src/standard/events.html">
+<link rel="import" href="src/standard/gestures.html">
 <link rel="import" href="src/standard/utils.html">
 <link rel="import" href="src/standard/effects.html">
 <link rel="import" href="src/standard/configure.html">

src/lib/gestures.html

@@ -8,35 +8,26 @@
 subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
 -->
 
-<link rel="import" href="../lib/gestures.html">
-
 <script>
 
   /**
-   * Supports `listeners` and `keyPresses` objects.
+   * Supports `listeners` object.
    *
    * Example:
    *
-   *     using('Base', function(Base) {
-   *
-   *       Polymer({
-   *
-   *         listeners: {
-   *           // `click` events on the host are delegated to `clickHandler`
-   *           'click': 'clickHandler'
-   *         },
    *
-   *         keyPresses: {
-   *           // 'ESC' key presses are delegated to `escHandler`
-   *           Base.ESC_KEY: 'escHandler'
-   *         },
+   *     Polymer({
    *
-   *         ...
+   *       listeners: {
+   *         // `click` events on the host are delegated to `clickHandler`
+   *         'click': 'clickHandler'
+   *       },
    *
-   *       });
+   *       ...
    *
    *     });
    *
+   *
    * @class standard feature: events
    *
    */
@@ -77,18 +68,10 @@
     },
 
     _listen: function(node, eventName, handler) {
-      switch (eventName) {
-        case 'tap':
-        case 'track':
-          Polymer.Gestures.add(eventName, node, handler);
-          break;
-
-        default:
-          node.addEventListener(eventName, handler);
-          break;
-      }
+      node.addEventListener(eventName, handler);
     },
 
+    // TODO(dfreedm): remove when a11y keys element is ported
     keyCodes: {
       ESC_KEY: 27,
       ENTER_KEY: 13,