From e53db140f27e405f4e541ad23b737836db36b2ad Mon Sep 17 00:00:00 2001
From: Stefan Suhren <suhren.stefan@fh-swf.de>
Date: Tue, 31 Mar 2015 11:19:32 +0200
Subject: Exercise No.2.1 with extra MainBorderPain

---
 .../in/inf/java2/aufgabe02/CardChangeEvent.java    | 75 ++++++++++++++++++++++
 .../fhswf/in/inf/java2/aufgabe02/JavaFxMain.java   | 60 +++++++++++++++++
 .../in/inf/java2/aufgabe02/MainBorderPane.java     | 54 ++++++++++++++++
 3 files changed, 189 insertions(+)
 create mode 100644 src/de/fhswf/in/inf/java2/aufgabe02/CardChangeEvent.java
 create mode 100644 src/de/fhswf/in/inf/java2/aufgabe02/JavaFxMain.java
 create mode 100644 src/de/fhswf/in/inf/java2/aufgabe02/MainBorderPane.java

diff --git a/src/de/fhswf/in/inf/java2/aufgabe02/CardChangeEvent.java b/src/de/fhswf/in/inf/java2/aufgabe02/CardChangeEvent.java
new file mode 100644
index 0000000..2050536
--- /dev/null
+++ b/src/de/fhswf/in/inf/java2/aufgabe02/CardChangeEvent.java
@@ -0,0 +1,75 @@
+/**
+ * Class CardChangeEvent.
+ */
+
+package de.fhswf.in.inf.java2.aufgabe02;
+
+import javafx.collections.ObservableList;
+import javafx.event.ActionEvent;
+import javafx.event.EventHandler;
+import javafx.scene.Node;
+import javafx.scene.control.Label;
+
+/**
+ * Generic handler for loading Labels on button click.
+ *
+ * @author $Author: $
+ * @version $Revision: $, $Date: $ UTC
+ */
+public class CardChangeEvent implements EventHandler<ActionEvent>
+{
+
+   private ObservableList<Node> children;
+
+   private String labelName;
+
+   private Label label = null;
+
+   /**
+    * Adds an eventHandler for the button so that a label is loaded into the
+    * stack pane.
+    *
+    */
+   public CardChangeEvent(ObservableList<Node> children, String labelName)
+   {
+      if (children == null)
+      {
+         throw new IllegalArgumentException("children can't be null.");
+      }
+
+      if (labelName == null)
+      {
+         throw new IllegalArgumentException("labelName can't be null.");
+      }
+
+      if (labelName.isEmpty())
+      {
+         throw new IllegalArgumentException("labelName can't be empty.");
+      }
+
+      this.children = children;
+      this.labelName = labelName;
+   }
+
+   /*
+    * (non-Javadoc)
+    * 
+    * @see javafx.event.EventHandler#handle(javafx.event.Event)
+    */
+   @Override
+   public void handle(ActionEvent event)
+   {
+      for (Node node : children)
+      {
+         node.setVisible(false);
+      }
+
+      if (label == null)
+      {
+         label = new Label(labelName);
+         children.add(label);
+      }
+
+      label.setVisible(true);
+   }
+}
diff --git a/src/de/fhswf/in/inf/java2/aufgabe02/JavaFxMain.java b/src/de/fhswf/in/inf/java2/aufgabe02/JavaFxMain.java
new file mode 100644
index 0000000..21a98cc
--- /dev/null
+++ b/src/de/fhswf/in/inf/java2/aufgabe02/JavaFxMain.java
@@ -0,0 +1,60 @@
+/**
+ * File for the JavaFX class.
+ */
+
+package de.fhswf.in.inf.java2.aufgabe02;
+
+import java.util.LinkedHashMap;
+
+import javafx.application.Application;
+import javafx.scene.Scene;
+import javafx.stage.Stage;
+
+/**
+ * The class which draws the hello world application.
+ *
+ * @author $Author: $
+ * @version $Revision: $, $Date: $ UTC
+ */
+public class JavaFxMain extends Application
+{
+
+   /**
+    * Calls the function to build the main window and entry point for the
+    * graphical application.
+    *
+    * @param args
+    *           Command line arguments
+    */
+   public static void main(String[] args)
+   {
+      launch(args);
+   }
+
+   /*
+    * (non-Javadoc)
+    * 
+    * @see javafx.application.Application#start(javafx.stage.Stage)
+    */
+   @Override
+   public void start(Stage primaryStage) throws Exception
+   {
+      
+      LinkedHashMap<String, String> labels = new LinkedHashMap<>();
+      
+      for (int i = 1; i < 15; i++)
+      {
+         labels.put("Button " + i, "Label " + i);
+      }
+      
+      MainBorderPane root = new MainBorderPane(labels);
+      Scene scene = new Scene(root);
+
+      primaryStage.setTitle("Label Control!");
+
+      primaryStage.setScene(scene);
+      primaryStage.show();
+
+   }
+
+}
diff --git a/src/de/fhswf/in/inf/java2/aufgabe02/MainBorderPane.java b/src/de/fhswf/in/inf/java2/aufgabe02/MainBorderPane.java
new file mode 100644
index 0000000..c70e1b3
--- /dev/null
+++ b/src/de/fhswf/in/inf/java2/aufgabe02/MainBorderPane.java
@@ -0,0 +1,54 @@
+/**
+ * Class MainBorderPain.
+ */
+
+package de.fhswf.in.inf.java2.aufgabe02;
+
+import java.util.Map;
+
+import javafx.scene.control.Button;
+import javafx.scene.layout.BorderPane;
+import javafx.scene.layout.StackPane;
+import javafx.scene.layout.VBox;
+
+/**
+ * Dynamically creates the buttons and labels.
+ *
+ * @author $Author: $
+ * @version $Revision: $, $Date: $ UTC
+ */
+public class MainBorderPane extends BorderPane
+{
+
+   StackPane labelPane = new StackPane();
+
+   VBox buttonPane = new VBox();
+
+   /**
+    * Creates buttons with text from key and the button creates a label with
+    * name from value.
+    * 
+    * @param names
+    *           The Map with the key value mappings.
+    *
+    */
+   public MainBorderPane(Map<String, String> names)
+   {
+      if (names == null)
+      {
+         throw new IllegalArgumentException("labels can't be null.");
+      }
+
+      Button tmp;
+      for (String name : names.keySet())
+      {
+         tmp = new Button(name);
+         tmp.setOnAction(new CardChangeEvent(labelPane.getChildren(), names
+               .get(name)));
+         buttonPane.getChildren().add(tmp);
+      }
+
+      setLeft(buttonPane);
+      setCenter(labelPane);
+   }
+}
-- 
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