Add focus in/out event to Text : Text Event « SWT « Java Tutorial






Add focus in/out event to Text
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

public class FocusEventInOut {

  public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    
    Text t = new Text(shell, SWT.SINGLE | SWT.BORDER);
    t.setBounds(10, 85, 100, 32);

    Text t2 = new Text(shell, SWT.SINGLE | SWT.BORDER);
    t2.setBounds(10, 25, 100, 32);

    t2.addListener(SWT.FocusIn, new Listener() {
      public void handleEvent(Event e) {
        System.out.println("focus in");
      }
    });
    t2.addListener(SWT.FocusOut, new Listener() {
      public void handleEvent(Event e) {
       System.out.println("focus out");
      }
    });
    
    shell.setSize(200, 200);
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    display.dispose();
  }
}








17.18.Text Event
17.18.1.Add focus in/out event to TextAdd focus in/out event to Text
17.18.2.Add KeyEvent listener to TextAdd KeyEvent listener to Text
17.18.3.Listen to key Traversed eventListen to key Traversed event
17.18.4.Use a regular expression to verify input(a phone number is used)Use a regular expression to verify input(a phone number is used)
17.18.5.Add events to Text: MouseDown, MouseMove, MouseUp, KeyDown, KeyUp ResizeAdd events to Text: MouseDown, MouseMove, MouseUp, KeyDown, KeyUp Resize
17.18.6.Detect when the user scrolls a text controlDetect when the user scrolls a text control
17.18.7.Verify input (format for date)Verify input (format for date)
17.18.8.Verify input (only allow digits)Verify input (only allow digits)
17.18.9.Text TraverseListener: Tab key event (override Tab behavior to traverse out of a Text)Text TraverseListener: Tab key event (override Tab behavior to traverse out of a Text)
17.18.10.Text default selection event(Return/Enter key)Text default selection event(Return/Enter key)
17.18.11.Add default selection listener to TextAdd default selection listener to Text