Refactor demo

Author: pcastornii

mvvm4fx-demo/src/main/java/com/techsenger/mvvm4fx/demo/PersonRegistryComponent.java

@@ -34,13 +34,6 @@ public ComponentName getName() {
         return DemoComponentNames.PERSON_REGISTRY;
     }
 
-    @Override
-    protected void postInitialize() {
-        super.postInitialize();
-        getView().showStage();
-        getView().getViewModel().refresh();
-    }
-
     @Override
     protected Mediator createMediator() {
         return new AbstractParentComponent.Mediator() { };

mvvm4fx-demo/src/main/java/com/techsenger/mvvm4fx/demo/PersonRegistryView.java

@@ -55,6 +55,12 @@ public PersonRegistryView(Stage stage, PersonRegistryViewModel viewModel) {
         this.stage = stage;
     }
 
+    @Override
+    protected void initialize() {
+        super.initialize();
+        stage.show();
+    }
+
     @Override
     protected void build() {
         super.build();
@@ -106,8 +112,4 @@ protected void addHandlers() {
         removeButton.setOnAction(e -> vm.remove());
         refreshButton.setOnAction(e -> vm.refresh());
     }
-
-    void showStage() {
-        stage.show();
-    }
 }

mvvm4fx-demo/src/main/java/com/techsenger/mvvm4fx/demo/PersonRegistryViewModel.java

@@ -17,6 +17,7 @@
 package com.techsenger.mvvm4fx.demo;
 
 import com.techsenger.mvvm4fx.core.AbstractParentViewModel;
+import com.techsenger.mvvm4fx.core.ComponentState;
 import com.techsenger.mvvm4fx.core.ParentMediator;
 import com.techsenger.mvvm4fx.demo.model.Person;
 import com.techsenger.mvvm4fx.demo.model.PersonService;
@@ -64,6 +65,11 @@ protected void initialize() {
             // log message example with component meta
             logger.debug("{} Selected person property changed", getMediator().getLogPrefix());
         });
+        getMediator().stateProperty().addListener((ov, oldV, newV) -> {
+            if (newV == ComponentState.INITIALIZED) {
+                refresh();
+            }
+        });
     }
 
     ObservableList<Person> getPersons() {