Source code: javax/ide/spi/IDEListenerHook.java

   package javax.ide.spi;
   
   import java.util.ArrayList;
   import java.util.Collection;
   import javax.ide.extension.ElementContext;
   import javax.ide.extension.ElementName;
   import javax.ide.extension.ElementStartContext;
   import javax.ide.extension.ElementVisitor;
   import javax.ide.extension.ExtensionHook;
  import javax.ide.extension.MetaClassVisitor;
  import javax.ide.util.MetaClass;
  
  /**
   * IDE listener information gathered from processing an extension manifest.
   */
  public final class IDEListenerHook extends ExtensionHook
  {
    public static final ElementName ELEMENT = new ElementName( 
      MANIFEST_XMLNS, "ide-listener-hook" );
    private static final ElementName IDE_LISTENERS = new ElementName(
      MANIFEST_XMLNS, "ide-listeners" );
    private static final ElementName IDE_LISTENER = new ElementName(
      MANIFEST_XMLNS, "ide-listener" );
  
    private ElementVisitor _listenersVisitor = new ListenersVisitor();
    private ElementVisitor _listenerVisitor = new ListenerVisitor();
  
    private Collection _listeners = new ArrayList();
  
    /**
     * Get the list of {@link javax.ide.IDEListener}s {@link MetaClass}es 
     * declared in the extension manifest.
     *
     * @return An array of ide listeners {@link MetaClass}es. If none available
     * return a zero length array.
     */
    public Collection getListeners()
    {
      return _listeners;
    }
  
    public void start( ElementStartContext context )
    {
      context.registerChildVisitor( IDE_LISTENERS, _listenersVisitor );
    }  
    
    private class ListenersVisitor extends ElementVisitor
    {
      public void start( ElementStartContext context )
      {
        context.registerChildVisitor( IDE_LISTENER, _listenerVisitor );
      }
    }
    
    private class ListenerVisitor extends MetaClassVisitor
    {
      public void metaClass( ElementContext context, MetaClass mc )
      {
        _listeners.add( mc );
      }
    }
  }