[polymer] import all elements

pkg/polymer/lib/elements/polymer-signals/polymer-signals.html

Index: pkg/polymer/lib/elements/polymer-signals/polymer-signals.html
diff --git a/pkg/polymer/lib/elements/polymer-signals/polymer-signals.html b/pkg/polymer/lib/elements/polymer-signals/polymer-signals.html
new file mode 100644
index 0000000000000000000000000000000000000000..3aecf2ffa036069a05656c75b6a7cb3ebfd88830
--- /dev/null
+++ b/pkg/polymer/lib/elements/polymer-signals/polymer-signals.html
@@ -0,0 +1,43 @@
+<!--
+Copyright 2013 The Polymer Authors. All rights reserved.
+Use of this source code is governed by a BSD-style
+license that can be found in the LICENSE file.
+-->
+<link rel="import" href="../polymer/polymer.html">
+
+<polymer-element name="polymer-signals">
+  <script>
+    (function(){
+      Polymer('polymer-signals', {
+        enteredView: function() {
+          signals.push(this);
+        },
+        removed: function() {
+          var i = signals.indexOf(this);
+          if (i >= 0) {
+            signals.splice(i, 1);
+          }
+        }
+      });
+      // private shared database
+      var signals = [];
+      // signal dispatcher
+      function notify(name, data) {
+        // convert generic-signal event to named-signal event
+        var signal = new CustomEvent('polymer-signal-' + name, {
+          bubbles: true,
+          detail: data
+        });
+        // dispatch named-signal to all 'signals' instances,
+        // only interested listeners will react
+        signals.forEach(function(s) {
+          s.dispatchEvent(signal);
+        });
+      }
+      // signal listener at document
+      document.addEventListener('polymer-signal', function(e) {
+        notify(e.detail.name, e.detail.data);
+      });
+    })();
+  </script>
+</polymer-element>