Add on-shown attribute

src/uiSelectController.js

@@ -66,6 +66,10 @@ uis.controller('uiSelectCtrl',
 
       $scope.$broadcast('uis:activate');
 
+      $timeout(function(){
+        ctrl.onShowCallback($scope);
+      });
+
       ctrl.open = true;
 
       ctrl.activeIndex = ctrl.activeIndex >= ctrl.items.length ? 0 : ctrl.activeIndex;

src/uiSelectDirective.js

@@ -43,7 +43,8 @@ uis.directive('uiSelect',
 
         $select.onSelectCallback = $parse(attrs.onSelect);
         $select.onRemoveCallback = $parse(attrs.onRemove);
-
+        $select.onShowCallback = $parse(attrs.onShow);
+
         //Set reference to ngModel from uiSelectCtrl
         $select.ngModel = ngModel;
 

test/select.spec.js

@@ -900,7 +900,7 @@ describe('ui-select tests', function() {
 
     expect(scope.$item).toBeFalsy();
     expect(scope.$model).toBeFalsy();
-
+    
     clickItem(el, 'Samantha');
     $timeout.flush();
 
@@ -912,6 +912,27 @@ describe('ui-select tests', function() {
 
   });
 
+  it('should invoke show callback on activate', function () {
+    scope.onShowFn = function (someArg) {
+      scope.someArg = someArg;
+    };
+    var el = compileTemplate(
+      '<ui-select on-show="onShowFn(\'shown\')" ng-model="selection.selected"> \
+        <ui-select-match placeholder="Pick one...">{{$select.selected.name}}</ui-select-match> \
+        <ui-select-choices repeat="person.name as person in people | filter: $select.search"> \
+          <div ng-bind-html="person.name | highlight: $select.search"></div> \
+          <div ng-bind-html="person.email | highlight: $select.search"></div> \
+        </ui-select-choices> \
+      </ui-select>'
+    );
+
+    expect(scope.someArg).toBeFalsy();
+    clickMatch(el);
+    $timeout.flush();
+
+    expect(scope.someArg).toEqual('shown');
+  });
+
   it('should invoke hover callback', function(){
 
     var highlighted;