Use Mouse action to activate(install) Tree editor : Tree Editor « SWT « Java Tutorial

1. Java Tutorial
2. SWT
3. Tree Editor

import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.TreeEditor;
import org.eclipse.swt.events.FocusAdapter;
import org.eclipse.swt.events.FocusEvent;
import org.eclipse.swt.events.KeyAdapter;
import org.eclipse.swt.events.KeyEvent;
import org.eclipse.swt.events.MouseAdapter;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.swt.widgets.TreeItem;

public class TreeEditorMouseActivate {
  public static void main(String[] args) {
    Display display = new Display();
    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.addMouseListener(new MouseAdapter() {
      public void mouseDown(MouseEvent event) {
        final TreeItem item = tree.getSelection()[0];

        final Text text = new Text(tree, SWT.NONE);
        text.setText(item.getText());
        text.selectAll();
        text.setFocus();

        text.addFocusListener(new FocusAdapter() {
          public void focusLost(FocusEvent event) {
            item.setText(text.getText());
            text.dispose();
          }
        });

        text.addKeyListener(new KeyAdapter() {
          public void keyPressed(KeyEvent event) {
            switch (event.keyCode) {
            case SWT.CR:
              item.setText(text.getText());
            case SWT.ESC:
              text.dispose();
              break;
            }
          }
        });
        editor.setEditor(text, item);
      }
    });

    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