- All controls are the same size and are put in the same location.
- They're all stacked atop each other.
- only the topmost control is visible.
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.StackLayout;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class StackLayoutTest {
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
StackLayout layout = new StackLayout();
shell.setLayout(layout);
StackLayoutSelectionAdapter adapter = new StackLayoutSelectionAdapter(shell, layout);
Button one = new Button(shell, SWT.PUSH);
one.setText("one");
one.addSelectionListener(adapter);
Button two = new Button(shell, SWT.PUSH);
two.setText("two");
two.addSelectionListener(adapter);
Button three = new Button(shell, SWT.PUSH);
three.setText("three");
three.addSelectionListener(adapter);
layout.topControl = one;
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
display.dispose();
}
}
class StackLayoutSelectionAdapter extends SelectionAdapter {
Shell shell;
StackLayout layout;
public StackLayoutSelectionAdapter(Shell shell, StackLayout layout) {
this.shell = shell;
this.layout = layout;
}
public void widgetSelected(SelectionEvent event) {
Control control = layout.topControl;
Control[] children = shell.getChildren();
int i = 0;
for (int n = children.length; i < n; i++) {
Control child = children[i];
if (child == control) {
break;
}
}
i = i+1;
if (i >= children.length)
i = 0;
layout.topControl = children[i];
shell.layout();
}
}
