From 33613a85afc4b1481367fbe92a17ee59c240250b Mon Sep 17 00:00:00 2001
From: Sven Eisenhauer <sven@sven-eisenhauer.net>
Date: Fri, 10 Nov 2023 15:11:48 +0100
Subject: add new repo

---
 .../hjp5/examples/wstest/Listing3813.java          | 83 ++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 Master/Reference Architectures and Patterns/hjp5/examples/wstest/Listing3813.java

(limited to 'Master/Reference Architectures and Patterns/hjp5/examples/wstest/Listing3813.java')

diff --git a/Master/Reference Architectures and Patterns/hjp5/examples/wstest/Listing3813.java b/Master/Reference Architectures and Patterns/hjp5/examples/wstest/Listing3813.java
new file mode 100644
index 0000000..94958e9
--- /dev/null
+++ b/Master/Reference Architectures and Patterns/hjp5/examples/wstest/Listing3813.java	
@@ -0,0 +1,83 @@
+/* Listing3813.java */
+
+import java.awt.*;
+import java.awt.event.*;
+import javax.swing.*;
+import javax.swing.event.*;
+import javax.swing.tree.*;
+
+public class Listing3813
+extends JFrame
+implements ActionListener
+{
+  protected DefaultMutableTreeNode root;
+  protected DefaultTreeModel       treeModel;
+  protected JTree                  tree;
+
+  public Listing3813()
+  {
+    super("JTree 3");
+    addWindowListener(new WindowClosingAdapter(true));
+    //JTree erzeugen und Einfachselektion aktivieren
+    root = new DefaultMutableTreeNode("Root");
+    treeModel = new DefaultTreeModel(root);
+    tree = new JTree(treeModel);
+    TreeSelectionModel tsm = new DefaultTreeSelectionModel();
+    tsm.setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
+    tree.setSelectionModel(tsm);
+    tree.setRootVisible(true);
+    //JTree einfügen
+    Container cp = getContentPane();
+    cp.add(new JScrollPane(tree), BorderLayout.CENTER);
+    //ButtonPanel
+    JPanel panel = new JPanel(new FlowLayout());
+    String[] buttons = new String[]{"AddChild", "Delete", "Change"};
+    for (int i = 0; i < buttons.length; ++i) {
+      JButton button = new JButton(buttons[i]);
+      button.addActionListener(this);
+      panel.add(button);
+    }
+    cp.add(panel, BorderLayout.SOUTH);
+  }
+
+  public void actionPerformed(ActionEvent event)
+  {
+    String cmd = event.getActionCommand();
+    TreePath tp = tree.getLeadSelectionPath(); 
+    if (tp != null) {
+      DefaultMutableTreeNode node;
+      node = (DefaultMutableTreeNode)tp.getLastPathComponent();
+      if (cmd.equals("AddChild")) {
+        DefaultMutableTreeNode child;
+        child = new DefaultMutableTreeNode("child");
+        treeModel.insertNodeInto(child, node, node.getChildCount()); 
+        TreeNode[] path = treeModel.getPathToRoot(node);
+        tree.expandPath(new TreePath(path));
+      } else if (cmd.equals("Delete")) {
+        if (node != root) {
+          TreeNode parent = node.getParent();
+          TreeNode[] path = treeModel.getPathToRoot(parent);
+          treeModel.removeNodeFromParent(node); 
+          tree.setSelectionPath(new TreePath(path));
+        }
+      } else if (cmd.equals("Change")) {
+        String name = node.toString();
+        node.setUserObject(name + "C");
+        treeModel.nodeChanged(node); 
+      }
+    }
+  }
+
+  public static void main(String[] args)
+  {
+    try {
+      String plaf = "com.sun.java.swing.plaf.windows.WindowsLookAndFeel";
+      UIManager.setLookAndFeel(plaf);
+      Listing3813 frame = new Listing3813();
+      frame.setLocation(100, 100);
+      frame.setSize(300, 300);
+      frame.setVisible(true);
+    } catch (Exception e) {
+    }
+  }
+}
\ No newline at end of file
-- 
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