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

org.zkoss.zk.ui.event.EventThreadInit
Used to initialize the event processing thread.
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, even time the engine (in the main thread) is about to process an event, it creates a new instance of the specified class, invokes {@link #prepare}, and then pass it to the thread processing thread.
3. After the thread processing thread is resumed, it invokes {@link #init}to do the initialization.
In other words, {@link #prepare} is called in the servlet thread, while{@link #init} is called in the event processing thread.Therefore, the typical use is retrieving thread-relevant info in {@link #prepare}, and then apply them in the event processing thread when {@link #init} is called. @author tomyeh


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

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  public boolean invokeEventThreadInits(List inits, Component comp, Event evt) 
  throws UiException {
    if (inits == null || inits.isEmpty()) return true; //not to ignore


    for (Iterator it = inits.iterator(); it.hasNext();) {
      final EventThreadInit fn = (EventThreadInit)it.next();
      try {
        try {
          if (!fn.init(comp, evt))
            return false; //ignore the event
        } catch (AbstractMethodError ex) { //backward compatible prior to 3.0
          final Method m = fn.getClass().getMethod(
            "init", new Class[] {Component.class, Event.class});
          Fields.setAccessible(m, true);
          m.invoke(fn, new Object[] {comp, evt});
        }
      } catch (Throwable ex) {

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

org.zkoss.zk.ui.util.Configuration

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