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samples-dev/swarm/swarm_ui_lib/touch/EventUtil.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of touch;
 
 /**
  * Common events related helpers.
  */
 class EventUtil {
-
   /**
    * Add an event listener to an element.
    * The event callback is specified by [handler].
    * If [capture] is true, the listener gets events on the capture phase.
    * If [removeHandlerOnFocus] is true the handler is removed when there is any
    * focus event, and added back on blur events.
    */
-  static void observe(/*Element or Document*/ element,
-                      Stream stream, Function handler,
-                      [bool removeHandlerOnFocus = false]) {
+  static void observe(
+      /*Element or Document*/ element, Stream stream, Function handler,
+      [bool removeHandlerOnFocus = false]) {
     var subscription = stream.listen(handler);
     // TODO(jacobr): this remove on focus behavior seems really ugly.
     if (removeHandlerOnFocus) {
-      element.onFocus.listen((e) { subscription.cancel(); });
-      element.onBlur.listen((e) { subscription.cancel(); });
+      element.onFocus.listen((e) {
+        subscription.cancel();
+      });
+      element.onBlur.listen((e) {
+        subscription.cancel();
+      });
     }
   }
 
   /**
    * Clear the keyboard focus of the currently focused element (if there is
    * one). If there is no currently focused element then this function will do
    * nothing. For most browsers this will cause the keyboard to be dismissed.
    */
   static void blurFocusedElement() {
     Element focusedEl = document.querySelector("*:focus");
     if (focusedEl != null) {
       focusedEl.blur();
     }
   }
 }