GUACAMOLE-1904: Add new events to allow children to open/close the client menu.

Author: jmuehlner

guacamole/src/main/frontend/src/app/client/controllers/clientController.js

@@ -468,8 +468,21 @@ angular.module('client').controller('clientController', ['$scope', '$routeParams
         else if (menuShownPreviousState)
             $scope.applyParameterChanges($scope.focusedClient);
 
+        /* Broadcast changes to the menu display state */
+        $scope.$broadcast('guacMenuShown', menuShown);
+
     });
 
+    // Toggle the menu when the guacClientToggleMenu event is received
+    $scope.$on('guacToggleMenu',
+            () => $scope.menu.shown = !$scope.menu.shown);
+
+    // Show the menu when the guacClientShowMenu event is received
+    $scope.$on('guacShowMenu', () => $scope.menu.shown = true);
+
+    // Hide the menu when the guacClientHideMenu event is received
+    $scope.$on('guacHideMenu', () => $scope.menu.shown = false);
+
     // Broadcast any mouse events caught from clients back down to the rest
     // of the client page
     $scope.$on('guacClientMouseEvent', (angularEvent, mouseEvent) => {