1 /*
   2  * Copyright (c) 2007, 2017 Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 package org.jemmy.control;
  24 
  25 
  26 import java.util.HashMap;
  27 import org.jemmy.JemmyException;
  28 import org.jemmy.env.Environment;
  29 
  30 
  31 /**
  32  * This is an implementation of {@code Wrapper} which keeps a map between 
  33  * control class names and wrap class names. In only loads the wrap classes when 
  34  * first needed.
  35  * @author shura
  36  */
  37 public class LazyWrapper extends AbstractWrapper {
  38 
  39     private final HashMap<String, String> theWrappers = new HashMap<String, String>();
  40     private final ClassLoader loader; 
  41     /**
  42      *
  43      * @param env
  44      */
  45     @SuppressWarnings("unchecked")
  46     public LazyWrapper(ClassLoader loader, Environment env) {
  47         super(env);
  48         this.loader = loader;
  49     }
  50 
  51     /**
  52      *
  53      * @param <P>
  54      * @param controlClass
  55      * @param wrapperClass
  56      */
  57     public <P> void add(String controlClass, String wrapperClass) {
  58         theWrappers.put(controlClass, wrapperClass);
  59     }
  60 
  61     @Override
  62     protected Class<Wrap> getWrapClass(Class controlClass) {
  63         String wrapClassName = theWrappers.get(controlClass.getName());
  64         if(wrapClassName == null) {
  65             return null;
  66         }
  67         try {
  68             return (Class<Wrap>)loader.loadClass(wrapClassName);
  69         } catch (ClassNotFoundException ex) {
  70             throw new JemmyException("Unable to load wrap for " + controlClass.getName() +
  71                     " which is " + wrapClassName, ex);
  72         }
  73     }
  74 
  75 }