javax.swing.event.DocumentListener#insertUpdate()源码实例Demo

/** Gives notification that there was an insert into the document.
* @param ev event describing the action
*/
@Override public void insertUpdate(DocumentEvent ev) {
    final DocumentListener l = docGet(ev);

    if (l != null) {
        l.insertUpdate(ev);
    }
}
 

@Override
public void insertUpdate(DocumentEvent e) {
    DocumentListener l = getDelegate();
    if (l != null) {
	l.insertUpdate(e);
    }
}
 

/**
 * Implementation of DocumentListener's method fires all the added
 * listeners according to their priority.
 */
public void insertUpdate(DocumentEvent evt) {
    logEvent(evt, "insertUpdate");
    // Fire the prioritized listeners
    EventListener[][] listenersArray = getListenersArray();
    // Attempt to fire to all listeners catching possible exception(s) and report first fired then
    RuntimeException runtimeException = null;
    for (int priority = listenersArray.length - 1; priority >= 0; priority--) {
        logPriority(priority);
        EventListener[] listeners = listenersArray[priority];
        for (int i = listeners.length - 1; i >= 0; i--) {
            DocumentListener l = (DocumentListener) listeners[i];
            logListener(l);
            try {
                l.insertUpdate(evt);
            } catch (RuntimeException ex) {
                if (runtimeException == null) { // Only record first thrown
                    runtimeException = ex;
                }
            }
        }
    }
    if (runtimeException != null) {
        throw runtimeException; // Re-throw remembered exception
    }
    logEventEnd("insertUpdate");
}
 

protected void fireInsertEvent( final DocumentEvent event ) {
  final DocumentListener[] listeners = listenerList.getListeners( DocumentListener.class );
  for ( int i = 0; i < listeners.length; i++ ) {
    final DocumentListener documentListener = listeners[ i ];
    documentListener.insertUpdate( event );
  }
}
 

void firePreInsertUpdate(DefaultDocumentEvent chng) {
    for (DocumentListener listener: updateDocumentListenerList.getListeners()) {
        listener.insertUpdate(chng);
    }
}