Абстрактный выбор папки для заданий 3, 4, 5

src/tse/lr3/AbstractDirectoryChooser.java

@@ -0,0 +1,57 @@
+package tse.lr3;
+
+import java.awt.Component;
+import java.awt.Dimension;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.io.File;
+import javax.swing.JButton;
+import javax.swing.JDialog;
+import javax.swing.JFileChooser;
+import javax.swing.JPanel;
+import static javax.swing.WindowConstants.DISPOSE_ON_CLOSE;
+
+/**
+ *
+ * @author aNNiMON
+ */
+public abstract class AbstractDirectoryChooser extends JDialog implements ActionListener {
+
+    private final JFileChooser chooser;
+
+    public AbstractDirectoryChooser(String title) {
+        setTitle(title);
+        setPreferredSize(new Dimension(200, 80));
+        setDefaultCloseOperation(DISPOSE_ON_CLOSE);
+        initWindow();
+        chooser = new JFileChooser();
+        chooser.setCurrentDirectory(new File("."));
+        chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
+        chooser.setAcceptAllFileFilterUsed(false);
+    }
+    
+    private void initWindow() {
+        JPanel panel = new JPanel();
+        
+        JButton button = new JButton("Выбрать директорию");
+        button.setPreferredSize(new Dimension(150, 40));
+        button.setAlignmentX(Component.CENTER_ALIGNMENT);
+        button.addActionListener(this);
+        panel.add(button);
+        
+        getContentPane().add(panel);
+        pack();
+        setLocationRelativeTo(null);
+    }
+
+    @Override
+    public void actionPerformed(ActionEvent e) {
+        if (chooser.showOpenDialog(this) == JFileChooser.APPROVE_OPTION) {
+            directorySelected(chooser.getSelectedFile());
+        } else {
+            System.out.println("Ничего не выбрано");
+        }
+    }
+    
+    protected abstract void directorySelected(File directory);
+}