InputHandlerSetter


1   /*******************************************************************************
2    * Copyright (c) 2000, 2006 IBM Corporation and others.
3    * All rights reserved. This program and the accompanying materials
4    * are made available under the terms of the Eclipse Public License v1.0
5    * which accompanies this distribution, and is available at
6    * http://www.eclipse.org/legal/epl-v10.html
7    *
8    * Contributors:
9    *     IBM Corporation - initial API and implementation
10   *******************************************************************************/
11  package org.eclipse.ant.internal.ui.antsupport;
12  
13  
14  import java.text.MessageFormat  ; // can't use ICU, used by ant
15  
16  import org.apache.tools.ant.BuildException;
17  import org.apache.tools.ant.Project;
18  import org.apache.tools.ant.input.DefaultInputHandler;
19  import org.apache.tools.ant.input.InputHandler;
20  
21  /**
22   * This class exists so that the Ant integration has backwards compatibility
23   * with Ant releases previous to 1.5. InputHandlers are a new feature of Ant 1.5.
24   */
25  class InputHandlerSetter {
26  
27      protected void setInputHandler(Project project, String   inputHandlerClassname) {
28          InputHandler handler = null;
29          if (inputHandlerClassname == null) {
30              handler = new DefaultInputHandler();
31          } else {
32              try {
33                  handler = (InputHandler)(Class.forName(inputHandlerClassname).newInstance());
34              } catch (ClassCastException   e) {
35                  String   msg = MessageFormat.format(RemoteAntMessages.getString("InternalAntRunner.The_specified_input_handler_class_{0}_does_not_implement_the_org.apache.tools.ant.input.InputHandler_interface_5"), new String  []{inputHandlerClassname}); //$NON-NLS-1$
36                  throw new BuildException(msg, e);
37              } catch (Exception   e) {
38                  String   msg = MessageFormat.format(RemoteAntMessages.getString("InternalAntRunner.Unable_to_instantiate_specified_input_handler_class_{0}___{1}_6"), new String  []{inputHandlerClassname, e.getClass().getName()}); //$NON-NLS-1$
39                  throw new BuildException(msg, e);
40              }
41          }
42          project.setInputHandler(handler);
43      }
44  }
45
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