Display: stop a repeating timer when a button is pressed



/*
 * Display example snippet: stop a repeating timer when a button is pressed
 *
 * 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.graphics.Color;
import org.eclipse.swt.layout.RowData;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Button;
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.Shell;

public class Snippet68 {

  public static void main(String[] args) {
    final Display display = new Display();
    final Color red = display.getSystemColor(SWT.COLOR_RED);
    final Color blue = display.getSystemColor(SWT.COLOR_BLUE);
    Shell shell = new Shell(display);
    shell.setLayout(new RowLayout());
    Button button = new Button(shell, SWT.PUSH);
    button.setText("Stop Timer");
    final Label label = new Label(shell, SWT.BORDER);
    label.setBackground(red);
    final int time = 500;
    final Runnable timer = new Runnable() {
      public void run() {
        if (label.isDisposed())
          return;
        Color color = label.getBackground().equals(red) ? blue : red;
        label.setBackground(color);
        display.timerExec(time, this);
      }
    };
    display.timerExec(time, timer);
    button.addListener(SWT.Selection, new Listener() {
      public void handleEvent(Event event) {
        display.timerExec(-1, timer);
      }
    });
    button.pack();
    label.setLayoutData(new RowData(button.getSize()));
    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    display.dispose();
  }
}

1.	Create a non-rectangular shell to simulate transparency
2.	SWT Shell : create a non-rectangular window
3.	Open a shell maximized (full screen)
4.	Open a shell minimized (iconified)
5.	Non Rectangular Window in SWT
6.	Widget Test
7.	HelloWorld Display
8.	Ring Shell
9.	Shell Style
10.	Shows the various styles of Decorations
11.	Child Shell Example
12.	Child Shell Example 2
13.	Child Shell Example 3
14.	Shell Styles Example
15.	Professional Shell
16.	Complex Shell Example
17.	Composite Shell Example 2
18.	SWT Composite Class
19.	Simplest SWT
20.	Prevent a shell from closing (prompt the user)
21.	Create a splash screen in SWT
22.	Display example snippet: get the bounds and client area of a display
23.	Create one repeating timer (every 500 ms)
24.	Create two one shot timers (5000 ms, 2000 ms)
25.	Create and dispose children of a composite

Display: stop a repeating timer when a button is pressed : Shell Display « SWT JFace Eclipse « Java

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