Update a status line when an item is armed
/*
* Control example snippet: update a status line when an item is armed
*
* For a list of all SWT example snippets see
* http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
*/
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.MenuItem;
import org.eclipse.swt.widgets.Shell;
public class Snippet152 {
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
FormLayout layout = new FormLayout();
shell.setLayout(layout);
final Label label = new Label(shell, SWT.BORDER);
Listener armListener = new Listener() {
public void handleEvent(Event event) {
MenuItem item = (MenuItem) event.widget;
label.setText(item.getText());
label.update();
}
};
Listener showListener = new Listener() {
public void handleEvent(Event event) {
Menu menu = (Menu) event.widget;
MenuItem item = menu.getParentItem();
if (item != null) {
label.setText(item.getText());
label.update();
}
}
};
Listener hideListener = new Listener() {
public void handleEvent(Event event) {
label.setText("");
label.update();
}
};
FormData labelData = new FormData();
labelData.left = new FormAttachment(0);
labelData.right = new FormAttachment(100);
labelData.bottom = new FormAttachment(100);
label.setLayoutData(labelData);
Menu menuBar = new Menu(shell, SWT.BAR);
shell.setMenuBar(menuBar);
MenuItem fileItem = new MenuItem(menuBar, SWT.CASCADE);
fileItem.setText("File");
fileItem.addListener(SWT.Arm, armListener);
MenuItem editItem = new MenuItem(menuBar, SWT.CASCADE);
editItem.setText("Edit");
editItem.addListener(SWT.Arm, armListener);
Menu fileMenu = new Menu(shell, SWT.DROP_DOWN);
fileMenu.addListener(SWT.Hide, hideListener);
fileMenu.addListener(SWT.Show, showListener);
fileItem.setMenu(fileMenu);
String[] fileStrings = { "New", "Close", "Exit" };
for (int i = 0; i < fileStrings.length; i++) {
MenuItem item = new MenuItem(fileMenu, SWT.PUSH);
item.setText(fileStrings[i]);
item.addListener(SWT.Arm, armListener);
}
Menu editMenu = new Menu(shell, SWT.DROP_DOWN);
editMenu.addListener(SWT.Hide, hideListener);
editMenu.addListener(SWT.Show, showListener);
String[] editStrings = { "Cut", "Copy", "Paste" };
editItem.setMenu(editMenu);
for (int i = 0; i < editStrings.length; i++) {
MenuItem item = new MenuItem(editMenu, SWT.PUSH);
item.setText(editStrings[i]);
item.addListener(SWT.Arm, armListener);
}
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}
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