Examples of org.zkoss.zk.ui.event.EventThreadSuspend

org.zkoss.zk.ui.event.EventThreadSuspend
Used to listen when the event processing thread is going to suspend.
How this interface is used.
1. First, you specify a class that implements this interface in WEB-INF/zk.xml as a listener.
2. Then, an instance of the specified class is constructed and {@link #beforeSuspend}is invoked, before the thread is going to suspend. If {@link #beforeSuspend} throws a exception, the thread won'tbe suspended.
@author tomyeh


    final List suspends = new LinkedList();
    for (int j = 0; j < ary.length; ++j) {
      final Class klass = (Class)ary[j];
      try {
        final EventThreadSuspend suspend =
          (EventThreadSuspend)klass.newInstance();
        suspend.beforeSuspend(comp, evt, obj);
        suspends.add(suspend);
      } catch (Throwable ex) {
        throw UiException.Aide.wrap(ex);
        //Don't intercept; to prevent the event being suspended
      }

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  public void invokeEventThreadSuspends(List suspends, Component comp, Event evt)
  throws UiException {
    if (suspends == null || suspends.isEmpty()) return;


    for (Iterator it = suspends.iterator(); it.hasNext();) {
      final EventThreadSuspend fn = (EventThreadSuspend)it.next();
      try {
        fn.afterSuspend(comp, evt);
      } catch (Throwable ex) {
        log.error("Failed to invoke "+fn+" after suspended", ex);
      }
    }
  }

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Related Classes of org.zkoss.zk.ui.event.EventThreadSuspend

org.zkoss.zk.ui.util.Configuration

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