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| 17. 75. 1. 使用BusyIndicator |
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import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.BusyIndicator;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class BusyIndicatorDemo {
// The amount of time to sleep (in ms)
private static final int SLEEP_TIME = 3000;
// Labels for the button
private static final String RUN = "Press to Run";
private static final String IS_RUNNING = "Running...";
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
shell.setText("BusyIndicator Test");
shell.setLayout(new FillLayout());
final Button button = new Button(shell, SWT.PUSH);
button.setText(RUN);
button.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
// Change the button's text
button.setText(IS_RUNNING);
// Show the busy indicator
BusyIndicator.showWhile(button.getDisplay(), new SleepThread(SLEEP_TIME));
// Thread has completed; reset the button's text
button.setText(RUN);
}
});
shell.pack();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
display.dispose();
}
}
class SleepThread extends Thread {
private long ms;
public SleepThread(long ms) {
this.ms = ms;
}
public void run() {
try {
sleep(ms);
} catch (InterruptedException e) {
}
}
}
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