content: /*******************************************************************************
   * Copyright (c) 2000, 2007 IBM Corporation and others.
   * All rights reserved. This program and the accompanying materials
   * are made available under the terms of the Eclipse Public License v1.0
   * which accompanies this distribution, and is available at
   * http://www.eclipse.org/legal/epl-v10.html
   *
   * Contributors:
   *     IBM Corporation - initial API and implementation
   *******************************************************************************/
  package org.eclipse.wst.jsdt.internal.ui;
  
  import org.eclipse.core.runtime.IAdapterFactory;
  import org.eclipse.search.ui.ISearchPageScoreComputer;
  import org.eclipse.wst.jsdt.internal.ui.search.JavaSearchPageScoreComputer;
  import org.eclipse.wst.jsdt.internal.ui.search.SearchUtil;
  
  
  /**
   * Adapter factory to support basic UI operations for markers.
   */
  public class MarkerAdapterFactory implements IAdapterFactory {
  
  	private static Class[] PROPERTIES= new Class[0];
  	
  
  	private Object fSearchPageScoreComputer;
  	
  	public Class[] getAdapterList() {
  		updateLazyLoadedAdapters();
  		return PROPERTIES;
  	}
  	
  	public Object getAdapter(Object element, Class key) {
  		updateLazyLoadedAdapters();
  		if (fSearchPageScoreComputer != null && ISearchPageScoreComputer.class.equals(key))
  			return fSearchPageScoreComputer;
  		return null;
  	}
  
  	private void updateLazyLoadedAdapters() {
  		if (fSearchPageScoreComputer == null && SearchUtil.isSearchPlugInActivated())
  			createSearchPageScoreComputer();
  	}
  	
  	private void createSearchPageScoreComputer() {
  		fSearchPageScoreComputer= new JavaSearchPageScoreComputer();
  		PROPERTIES= new Class[] {ISearchPageScoreComputer.class};
  	}
  }
  