fa-touchend

This directive allows you to specify custom behavior after an element that has been touched.

Usage

<ANY fa-touchend="expression">

</ANY>

Note: For testing purposes during development, enable mobile emulation: https://developer.chrome.com/devtools/docs/mobile-emulation

API

Attr	Type	Details
faTouchend	`expression`	Expression to evaluate upon touchend. (Event object is available as `$event`)

Example

Upon a touchend event firing, fa-touchend will evaluate the expression bound to it.

Touchstart fires once upon first touch; touchend fires as the touch point is moved along a touch surface; touchend fires upon release of the touch point.

Fa-touchend on an fa-surface

Fa-touchend can be used on an fa-surface. Internally, a Famous Surface has a .on() method that binds a callback function to an event type handled by that Surface. The function expression bound to fa-touchend is bound to that fa-surface's touchend eventHandler, and when touchend fires, the function expression will be called.

Edit in Plunker

<fa-app ng-controller="TouchEndCtrl">
  <fa-modifier fa-size="[200, 100]">
    <fa-surface fa-touchend="touchEnd($event)"
                fa-background-color="'red'">
      Touch-end count: {{touchEndCount}}
    </fa-surface>
  </fa-modifier>
</fa-app>

<script>
  angular.module('faTouchEndExampleApp', ['famous.angular'])
    .controller('TouchEndCtrl', ['$scope', '$famous', function($scope, $famous) {
        
        $scope.touchEndCount = 0;

        $scope.touchEnd = function($event) {
          console.log($event);
          $scope.touchEndCount++;
        };

    }]);
</script>

fa-app {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
}

Fa-touchend on an fa-view

Fa-touchend may be used on an fa-view. The function expression bound to fa-touchend will be bound to the fa-view's internal _eventInput, the aggregation point of all events received by the fa-view. When it receives a touchend event, it will call the function expression bound to fa-touchend.

In the example below, the fa-surface pipes its Surface events to an instantied Famous Event Handler called myEvents. Fa-view pipes from myEvents, receiving all events piped by the fa-surface.

When a touchend event occurs on the fa-surface, it is piped to the fa-view.
fa-touchend defines a callback function in which to handle touchend events, and when it receives a touchend event, it calls touchEnd().

Edit in Plunker

<fa-app ng-controller="TouchEndCtrl">

  <!-- The fa-view receives the touchend event from the fa-surface, and calls $scope.touchEnd, which is bound to fa-touchend on the fa-view. -->

  <fa-view fa-touchend="touchEnd($event)" fa-pipe-from="myEvents">
    <fa-modifier fa-size="[100, 100]">
      <fa-surface fa-pipe-to="myEvents"
                  fa-background-color="'orange'">
        Touch-end count: {{touchEndCount}}
      </fa-surface>
    </fa-modifier>
  </fa-view>
</fa-app>

<script>
  angular.module('faTouchEndExampleApp', ['famous.angular'])
    .controller('TouchEndCtrl', ['$scope', '$famous', function($scope, $famous) {
        
        var EventHandler = $famous['famous/core/EventHandler'];
        $scope.myEvents = new EventHandler();

        $scope.touchEndCount = 0;
        
        $scope.touchEnd = function($event) {
          console.log($event);
          $scope.touchEndCount++;
        };

    }]);
</script>

fa-app {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
}