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Categories / Java by API / Org Eclipse Swt Widgets

 

Tree

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.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 MainClass {   public static void main(String[] a) {          final Display d = new Display();     final Shell shell = new Shell(d);     shell.setSize(250, 200);               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("Edit me by pressing F2 " + (i + 1));       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];           final Text text = new Text(tree, SWT.NONE);           text.setText(item.getText());           text.setFocus();           text.addFocusListener(new FocusAdapter() {             public void focusLost(FocusEvent event) {               item.setText(text.getText());               text.dispose();             }           });           editor.setEditor(text, item);         }       }     });          shell.open();     while (!shell.isDisposed()) {       if (!d.readAndDispatch())         d.sleep();     }     d.dispose();   } }