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

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Java Tutorial » SWT » Tree Editor 
17. 59. 4. Press F2 to launch a dialog as the 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.
Press F2 to launch a dialog as the Tree Editor
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 TreeEditorUsing TreeEditor
17. 59. 2. Use Text as the Table Cell EditorUse Text as the Table Cell Editor
17. 59. 3. Exchanging DataExchanging Data
17. 59. 4. Press F2 to launch a dialog as the Tree EditorPress 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 EditorUse Button as the Tree Editor
17. 59. 7. Add Tree cell editorAdd Tree cell editor
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