StartupScreen: new screen with an animated spinner to display on startup while the configuration is loading

Author: joshtynjala

source/FeathersSDKManager.mxml

@@ -26,6 +26,13 @@ limitations under the License.
 
 	<f:pushTransition>{Slide.createSlideLeftTransition()}</f:pushTransition>
 	<f:popTransition>{Slide.createSlideRightTransition()}</f:popTransition>
+
+	<f:StackScreenNavigatorItem id="startup">
+		<fx:Class>view.StartupScreen</fx:Class>
+		<f:pushEvents>
+			<fx:Object complete="{SCREEN_ID_STARTUP}"/>
+		</f:pushEvents>
+	</f:StackScreenNavigatorItem>
 
 	<!-- Step 1: Choose which binary distribution to download. -->
 	<f:StackScreenNavigatorItem id="chooseProduct">
@@ -116,6 +123,7 @@ limitations under the License.
 		import feathers.motion.Reveal;
 		import feathers.motion.Slide;
 
+		public static const SCREEN_ID_STARTUP:String = "startup";
 		public static const SCREEN_ID_CHOOSE_PRODUCT:String = "chooseProduct";
 		public static const SCREEN_ID_CHOOSE_RUNTIME:String = "chooseRuntime";
 		public static const SCREEN_ID_CHOOSE_INSTALL_DIRECTORY:String = "chooseInstallDirectory";

source/view/StartupScreen.mxml

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+Feathers SDK Manager
+Copyright 2015 Bowler Hat LLC
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+<f:Screen xmlns:fx="http://ns.adobe.com/mxml/2009"
+	xmlns:f="library://ns.feathersui.com/mxml">
+	
+	<f:layout>
+		<f:VerticalLayout gap="10" padding="10"
+			horizontalAlign="center" verticalAlign="middle"/>
+	</f:layout>
+	
+	<f:LayoutGroup id="spinnerGroup" styleName="{CustomStyleNames.ALTERNATE_STYLE_NAME_SPINNER_GROUP}"/>
+	
+	<fx:Script><![CDATA[
+		import utils.CustomStyleNames;
+	]]></fx:Script>
+</f:Screen>

source/view/mediators/FeathersSDKManagerMediator.as

@@ -28,6 +28,7 @@ package view.mediators
 	import feathers.core.PopUpManager;
 	import feathers.data.ListCollection;
 	import feathers.layout.AnchorLayout;
+	import feathers.motion.Fade;
 
 	import flash.desktop.NativeApplication;
 	import flash.display.Stage;
@@ -111,6 +112,8 @@ package view.mediators
 			NativeApplication.nativeApplication.addEventListener(InvokeEvent.INVOKE, nativeApplication_invokeHandler, false, 0, true);
 
 			this.createContextMenu();
+
+			this.navigator.rootScreenID = FeathersSDKManager.SCREEN_ID_STARTUP;
 
 			this.sdkManagerModel.log("Feathers SDK Manager " + this.applicationVersion + " " + this.sdkManagerModel.operatingSystem);
 		}
@@ -361,7 +364,7 @@ package view.mediators
 		{
 			this.checkForUpdate();
 			this._allowContextMenu = true;
-			this.navigator.rootScreenID = FeathersSDKManager.SCREEN_ID_CHOOSE_PRODUCT;
+			this.navigator.pushScreen(FeathersSDKManager.SCREEN_ID_CHOOSE_PRODUCT, null, Fade.createFadeOutTransition());
 		}
 
 		private function context_acquireBinaryDistributionStartHandler(event:starling.events.Event):void