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. Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 package org.jemmy.control;
  26 
  27 
  28 import java.util.HashMap;
  29 import org.jemmy.JemmyException;
  30 import org.jemmy.env.Environment;
  31 
  32 
  33 /**
  34  * This is an implementation of {@code Wrapper} which keeps a map between
  35  * control class names and wrap class names. In only loads the wrap classes when
  36  * first needed.
  37  * @author shura
  38  */
  39 public class LazyWrapper extends AbstractWrapper {
  40 
  41     private final HashMap<String, String> theWrappers = new HashMap<String, String>();
  42     private final ClassLoader loader;
  43     /**
  44      *
  45      * @param env
  46      */
  47     @SuppressWarnings("unchecked")
  48     public LazyWrapper(ClassLoader loader, Environment env) {
  49         super(env);
  50         this.loader = loader;
  51     }
  52 
  53     /**
  54      *
  55      * @param <P>
  56      * @param controlClass
  57      * @param wrapperClass
  58      */
  59     public <P> void add(String controlClass, String wrapperClass) {
  60         theWrappers.put(controlClass, wrapperClass);
  61     }
  62 
  63     @Override
  64     protected Class<Wrap> getWrapClass(Class controlClass) {
  65         String wrapClassName = theWrappers.get(controlClass.getName());
  66         if(wrapClassName == null) {
  67             return null;
  68         }
  69         try {
  70             return (Class<Wrap>)loader.loadClass(wrapClassName);
  71         } catch (ClassNotFoundException ex) {
  72             throw new JemmyException("Unable to load wrap for " + controlClass.getName() +
  73                     " which is " + wrapClassName, ex);
  74         }
  75     }
  76 
  77 }