Stack Layout Test
//Send questions, comments, bug reports, etc. to the authors:
//Rob Warner (rwarner@interspatial.com)
//Robert Harris (rbrt_harris@yahoo.com)
import org.eclipse.swt.events.*;
import org.eclipse.swt.widgets.*;
import org.eclipse.swt.custom.StackLayout;
import org.eclipse.swt.SWT;
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;
if (i >= children.length) {
i = 0;
}
layout.topControl = children[i];
shell.layout();
}
}
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