001 /** 002 * ======================================== 003 * JFreeReport : a free Java report library 004 * ======================================== 005 * 006 * Project Info: http://reporting.pentaho.org/ 007 * 008 * (C) Copyright 2000-2007, by Object Refinery Limited, Pentaho Corporation and Contributors. 009 * 010 * This library is free software; you can redistribute it and/or modify it under the terms 011 * of the GNU Lesser General Public License as published by the Free Software Foundation; 012 * either version 2.1 of the License, or (at your option) any later version. 013 * 014 * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 015 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 016 * See the GNU Lesser General Public License for more details. 017 * 018 * You should have received a copy of the GNU Lesser General Public License along with this 019 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, 020 * Boston, MA 02111-1307, USA. 021 * 022 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 023 * in the United States and other countries.] 024 * 025 * ------------ 026 * $Id: AbstractExportActionPlugin.java 3525 2007-10-16 11:43:48Z tmorgner $ 027 * ------------ 028 * (C) Copyright 2000-2005, by Object Refinery Limited. 029 * (C) Copyright 2005-2007, by Pentaho Corporation. 030 */ 031 032 package org.jfree.report.modules.gui.swing.common; 033 034 import java.awt.Dialog; 035 import java.awt.Frame; 036 import java.awt.Window; 037 import java.lang.reflect.Constructor; 038 039 import org.jfree.report.flow.ReportJob; 040 import org.jfree.util.Configuration; 041 import org.jfree.util.Log; 042 import org.jfree.util.ObjectUtilities; 043 044 /** 045 * Creation-Date: 02.12.2006, 14:21:07 046 * 047 * @author Thomas Morgner 048 */ 049 public abstract class AbstractExportActionPlugin extends AbstractActionPlugin 050 implements ExportActionPlugin 051 { 052 053 public AbstractExportActionPlugin() 054 { 055 } 056 057 058 /** 059 * Creates a progress dialog, and tries to assign a parent based on the given 060 * preview proxy. 061 * 062 * @return the progress dialog. 063 */ 064 protected ExportDialog createExportDialog(final String className) 065 throws InstantiationException 066 { 067 final Window proxy = getContext().getWindow(); 068 if (proxy instanceof Frame) 069 { 070 final ClassLoader classLoader = 071 ObjectUtilities.getClassLoader(AbstractActionPlugin.class); 072 try 073 { 074 final Class aClass = classLoader.loadClass(className); 075 final Constructor constructor = 076 aClass.getConstructor(new Class[]{Frame.class}); 077 return (ExportDialog) constructor.newInstance(new Object[]{proxy}); 078 } 079 catch (Exception e) 080 { 081 Log.error("Failed to instantiate Export-Dialog with a 'Frame'-parent: " + className); 082 } 083 } 084 else if (proxy instanceof Dialog) 085 { 086 final ClassLoader classLoader = 087 ObjectUtilities.getClassLoader(AbstractActionPlugin.class); 088 try 089 { 090 final Class aClass = classLoader.loadClass(className); 091 final Constructor constructor = 092 aClass.getConstructor(new Class[]{Dialog.class}); 093 return (ExportDialog) constructor.newInstance(new Object[]{proxy}); 094 } 095 catch (Exception e) 096 { 097 Log.error("Failed to instantiate Export-Dialog with a 'Dialog'-parent: " + className, e); 098 } 099 } 100 101 final Object fallBack = ObjectUtilities.loadAndInstantiate 102 (className, AbstractActionPlugin.class, ExportDialog.class); 103 if (fallBack != null) 104 { 105 return (ExportDialog) fallBack; 106 } 107 108 Log.error ("Failed to instantiate Export-Dialog without a parent: " + className); 109 throw new InstantiationException("Failed to instantiate Export-Dialog"); 110 } 111 112 113 /** 114 * Exports a report. 115 * 116 * @param report the report. 117 * @return A boolean. 118 */ 119 public boolean performShowExportDialog(final ReportJob job, final String configKey) 120 { 121 try 122 { 123 final Configuration configuration = job.getConfiguration(); 124 final String dialogClassName = configuration.getConfigProperty(configKey); 125 final ExportDialog dialog = createExportDialog(dialogClassName); 126 return dialog.performQueryForExport(job, getContext()); 127 } 128 catch (InstantiationException e) 129 { 130 Log.error ("Unable to configure the report job."); 131 setStatusText("Unable to configure the report job."); 132 return false; 133 } 134 } 135 136 }