Press F2 to launch a dialog as the Tree Editor : Tree Editor « SWT « Java Tutorial

1. Java Tutorial
2. SWT
3. Tree Editor

1. You can also associate the editor with a button to launch a dialog box for editing tree nodes.
2. You create the editor and control just like you do with the other editor classes.

import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.TreeEditor;
import org.eclipse.swt.events.KeyAdapter;
import org.eclipse.swt.events.KeyEvent;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.MessageBox;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.swt.widgets.TreeItem;

public class TreeEditorF2Trigger {
  public static void main(String[] args) {
    Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setText("Text Tree Editor");
    shell.setLayout(new FillLayout());

    final Tree tree = new Tree(shell, SWT.SINGLE);
    for (int i = 0; i < 3; i++) {
      TreeItem iItem = new TreeItem(tree, SWT.NONE);
      iItem.setText("Item " + (i + 1));
      for (int j = 0; j < 3; j++) {
        TreeItem jItem = new TreeItem(iItem, SWT.NONE);
        jItem.setText("Sub Item " + (j + 1));
        for (int k = 0; k < 3; k++) {
          new TreeItem(jItem, SWT.NONE).setText("Sub Sub Item " + (k + 1));
        }
        jItem.setExpanded(true);
      }
      iItem.setExpanded(true);
    }

    final TreeEditor editor = new TreeEditor(tree);
    editor.horizontalAlignment = SWT.LEFT;
    editor.grabHorizontal = true;

    tree.addKeyListener(new KeyAdapter() {
      public void keyPressed(KeyEvent event) {
        if (event.keyCode == SWT.F2 && tree.getSelectionCount() == 1) {
          final TreeItem item = tree.getSelection()[0];
          
          int style = SWT.ICON_QUESTION |SWT.YES | SWT.NO;
          
          MessageBox messageBox = new MessageBox(shell, style);
          messageBox.setMessage("Message");
          int rc = messageBox.open();
          
          item.setText(rc+"");
        }
      }
    });

    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        display.sleep();
      }
    }
    display.dispose();
  }
}

17.59.Tree Editor
	17.59.1.	Using TreeEditor
	17.59.2.	Use Text as the Table Cell Editor
	17.59.3.	Exchanging Data
	17.59.4.	Press F2 to launch a dialog as the Tree Editor
	17.59.5.	Use Mouse action to activate(install) Tree editor
	17.59.6.	Use Button as the Tree Editor
	17.59.7.	Add Tree cell editor