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: DefaultActionFactory.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.util.HashMap; 035 import java.util.Iterator; 036 037 import org.jfree.util.Configuration; 038 import org.jfree.util.Log; 039 import org.jfree.util.ObjectUtilities; 040 041 /** 042 * Creation-Date: 16.11.2006, 16:28:03 043 * 044 * @author Thomas Morgner 045 */ 046 public class DefaultActionFactory implements ActionFactory 047 { 048 private static final String PREFIX = 049 "org.jfree.report.modules.gui.swing.actions."; 050 051 public DefaultActionFactory() 052 { 053 } 054 055 public ActionPlugin[] getActions(final SwingGuiContext context, final String category) 056 { 057 final Configuration configuration = context.getConfiguration(); 058 final String prefix = PREFIX + category; 059 final Iterator keys = configuration.findPropertyKeys(prefix); 060 if (keys.hasNext() == false) 061 { 062 Log.debug("Returning : NO actions for " + category); 063 return new ActionPlugin[0]; 064 } 065 066 final HashMap plugins = new HashMap(); 067 while (keys.hasNext()) 068 { 069 final String key = (String) keys.next(); 070 final String base = key.substring(prefix.length()); 071 if (isPluginKey(base) == false) 072 { 073 continue; 074 } 075 076 final String clazz = configuration.getConfigProperty(key); 077 final Object maybeActionPlugin = ObjectUtilities.loadAndInstantiate 078 (clazz, DefaultActionFactory.class, ActionPlugin.class); 079 if (maybeActionPlugin == null) 080 { 081 Log.debug("Error : " + category + ": " + clazz + " is no action plugin"); 082 continue; 083 } 084 085 final ActionPlugin plugin = (ActionPlugin) maybeActionPlugin; 086 if (plugin.initialize(context) == false) 087 { 088 continue; 089 } 090 final String role = plugin.getRole(); 091 if (role == null) 092 { 093 plugins.put(plugin, plugin); 094 } 095 else 096 { 097 final ActionPlugin otherPlugin = (ActionPlugin) plugins.get(role); 098 if (otherPlugin != null) 099 { 100 if (plugin.getRolePreference() > otherPlugin.getRolePreference()) 101 { 102 plugins.put(role, plugin); 103 } 104 else 105 { 106 Log.debug("Loaded : " + category + ": " + clazz + ": Overridden by " + otherPlugin.getClass().getName()); 107 } 108 } 109 else 110 { 111 plugins.put(role, plugin); 112 } 113 } 114 } 115 116 Log.debug("Returning : " + plugins.size() + " actions for " + category); 117 118 return (ActionPlugin[]) plugins.values().toArray 119 (new ActionPlugin[plugins.size()]); 120 } 121 122 private boolean isPluginKey(final String base) 123 { 124 if (base.length() < 1) 125 { 126 return false; 127 } 128 if (base.indexOf('.', 1) > 0) 129 { 130 return false; 131 } 132 return true; 133 } 134 }