Introducing Loading and Exit View for Widget

source/HomeAssistantApp.mc

@@ -100,14 +100,9 @@ class HomeAssistantApp extends Application.AppBase {
                 System.println("HomeAssistantApp fetchMenuConfig(): No Internet connection, skipping API call.");
             }
             return [new ErrorView(strNoInternet + "."), new ErrorDelegate()] as Lang.Array<WatchUi.Views or WatchUi.InputDelegates>;
-        }else if (mHaMenu != null ){
-            // App.getApp().launchInitialView();
-            return [mHaMenu, new WatchUi.BehaviorDelegate()] as Lang.Array<WatchUi.Views or WatchUi.InputDelegates>;
-            // return mHaMenu.View;
-            //  WatchUi.pushView(mHaMenu, new HomeAssistantViewDelegate(), WatchUi.SLIDE_IMMEDIATE);
         } else {
             fetchMenuConfig();
-            return [new WatchUi.View(), new WatchUi.BehaviorDelegate()] as Lang.Array<WatchUi.Views or WatchUi.InputDelegates>;
+            return [new RootView(self), new RootViewDelegate(self)] as Lang.Array<WatchUi.Views or WatchUi.InputDelegates>;
         }
     }
 
@@ -144,7 +139,7 @@ class HomeAssistantApp extends Application.AppBase {
         } else if (responseCode == 200) {
             mHaMenu = new HomeAssistantView(data, null);
             quitTimer.begin();
-            WatchUi.pushView(mHaMenu, new HomeAssistantViewDelegate(), WatchUi.SLIDE_IMMEDIATE);
+            pushHomeAssistantMenuView();
             mItemsToUpdate = mHaMenu.getItemsToUpdate();
             // Start the continuous update process that continues for as long as the application is running.
             // The chain of functions from 'updateNextMenuItem()' calls 'updateNextMenuItem()' on completion.
@@ -177,6 +172,14 @@ class HomeAssistantApp extends Application.AppBase {
         );
     }
 
+    function homeAssistantMenuIsLoaded() as Lang.Boolean{
+        return mHaMenu!=null;
+    }
+
+    function pushHomeAssistantMenuView(){
+        WatchUi.pushView(mHaMenu, new HomeAssistantViewDelegate(), WatchUi.SLIDE_IMMEDIATE);
+    }
+
     // We need to spread out the API calls so as not to overload the results queue and cause Communications.BLE_QUEUE_FULL (-101) error.
     // This function is called by a timer every Globals.menuItemUpdateInterval ms.
     function updateNextMenuItem() as Void {

source/RootView.mc

@@ -0,0 +1,60 @@
+import Toybox.Graphics;
+import Toybox.Lang;
+import Toybox.WatchUi;
+
+class RootView extends WatchUi.View {
+
+    var width,height;
+    var mApp as HomeAssistantApp;
+
+    function initialize(app as HomeAssistantApp) {
+        View.initialize();
+        mApp=app;
+    }
+
+    function onLayout(dc as Dc) as Void {
+        width=dc.getWidth();
+		height=dc.getHeight();
+    }
+
+    function onUpdate(dc as Dc) as Void {
+        dc.setColor(Graphics.COLOR_BLACK,Graphics.COLOR_BLACK);
+		dc.clear();
+		dc.setColor(Graphics.COLOR_BLUE,Graphics.COLOR_TRANSPARENT);
+		if(mApp.homeAssistantMenuIsLoaded()) {
+		    dc.drawText(width/2,height/2,Graphics.FONT_SMALL,"Hit Back to Exit\nTap to stay",Graphics.TEXT_JUSTIFY_CENTER|Graphics.TEXT_JUSTIFY_VCENTER);	
+		} else {
+            dc.drawText(width/2,height/2,Graphics.FONT_SMALL,"Loading...",Graphics.TEXT_JUSTIFY_CENTER|Graphics.TEXT_JUSTIFY_VCENTER);
+		}
+    }
+}
+
+class RootViewDelegate extends WatchUi.BehaviorDelegate {
+
+    var mApp  as HomeAssistantApp;
+
+    function initialize(app as HomeAssistantApp ) {
+        BehaviorDelegate.initialize();
+        mApp=app;
+    }
+
+    public function onTap(evt as ClickEvent) as Boolean {
+        return backToMainMenu();
+    }
+
+    public function onSelect() as Boolean {
+        return backToMainMenu();
+    }
+
+    function onMenu(){
+        return backToMainMenu();
+    }
+
+    private function backToMainMenu() as Lang.Boolean{
+        if(mApp.homeAssistantMenuIsLoaded()){
+            mApp.pushHomeAssistantMenuView();
+            return true;
+        }
+        return false;
+    }
+}