Tree Example 2 : Tree « SWT JFace Eclipse « Java
Tree Example 2
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.TreeEvent;
import org.eclipse.swt.events.TreeListener;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.List;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.swt.widgets.TreeItem;
public class TreeShellExample2 {
Display d;
Shell s;
TreeShellExample2() {
d = new Display();
s = new Shell(d);
s.setSize(250, 200);
s.setText("A Tree Shell Example");
s.setLayout(new FillLayout(SWT.HORIZONTAL));
final Tree t = new Tree(s, SWT.SINGLE | SWT.BORDER);
final TreeItem child1 = new TreeItem(t, SWT.NONE, 0);
child1.setText("1");
child1.setImage(new Image(d, "c:\\icons\\folder.gif"));
final TreeItem child2 = new TreeItem(t, SWT.NONE, 1);
child2.setText("2");
child2.setImage(new Image(d, "c:\\icons\\folder.gif"));
final TreeItem child2a = new TreeItem(child2, SWT.NONE, 0);
child2a.setText("2A");
final TreeItem child2b = new TreeItem(child2, SWT.NONE, 1);
child2b.setText("2B");
final TreeItem child3 = new TreeItem(t, SWT.NONE, 2);
child3.setText("3");
child3.setImage(new Image(d, "c:\\icons\\folder.gif"));
final List l = new List(s, SWT.BORDER | SWT.SINGLE);
t.addTreeListener(new TreeListener() {
public void treeExpanded(TreeEvent e) {
TreeItem ti = (TreeItem) e.item;
ti.setImage(new Image(d, "c:\\icons\\open.gif"));
}
public void treeCollapsed(TreeEvent e) {
TreeItem ti = (TreeItem) e.item;
ti.setImage(new Image(d, "c:\\icons\\folder.gif"));
}
});
t.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
TreeItem ti = (TreeItem) e.item;
populateList(ti.getText());
}
private void populateList(String type) {
if (type.equals("1")) {
l.removeAll();
l.add("File 1");
l.add("File 2");
}
if (type.equals("2")) {
l.removeAll();
}
if (type.equals("2A")) {
l.removeAll();
l.add("File 3");
l.add("File 4");
}
if (type.equals("2B")) {
l.removeAll();
l.add("File 5");
l.add("File 6");
}
if (type.equals("3")) {
l.removeAll();
l.add("File 7");
l.add("File 8");
}
}
});
s.open();
while (!s.isDisposed()) {
if (!d.readAndDispatch())
d.sleep();
}
d.dispose();
}
public static void main(String[] argv) {
new TreeShellExample2();
}
}
