/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* Copyright (c) 2001 - 2009 Object Refinery Ltd, Pentaho Corporation and Contributors.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.core.modules.gui.commonswing;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Locale;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.pentaho.reporting.libraries.base.config.Configuration;
import org.pentaho.reporting.libraries.base.util.Messages;
import org.pentaho.reporting.libraries.base.util.ObjectUtilities;
/**
* Creation-Date: 16.11.2006, 16:28:03
*
* @author Thomas Morgner
*/
public class DefaultActionFactory implements ActionFactory
{
private static final Log logger = LogFactory.getLog(DefaultActionFactory.class);
private static final ActionPlugin[] EMPTY_ACTIONS = new ActionPlugin[0];
private static final String PREFIX =
"org.pentaho.reporting.engine.classic.core.modules.gui.swing.actions."; //$NON-NLS-1$
private static final Messages MESSAGES = new Messages(Locale.getDefault(), SwingCommonModule.BUNDLE_NAME,
ObjectUtilities.getClassLoader(SwingCommonModule.class));
public DefaultActionFactory()
{
}
public ActionPlugin[] getActions(final SwingGuiContext context, final String category)
{
if (context == null)
{
throw new NullPointerException();
}
if (category == null)
{
throw new NullPointerException();
}
final Configuration configuration = context.getConfiguration();
final String prefix = DefaultActionFactory.PREFIX + category;
final Iterator keys = configuration.findPropertyKeys(prefix);
if (keys.hasNext() == false)
{
DefaultActionFactory.logger.debug(DefaultActionFactory.MESSAGES.getString("DefaultActionFactory.DEBUG_NO_ACTIONS",
category)); //$NON-NLS-1$
return DefaultActionFactory.EMPTY_ACTIONS;
}
final HashMap plugins = new HashMap();
while (keys.hasNext())
{
final String key = (String) keys.next();
final String base = key.substring(prefix.length());
if (isPluginKey(base) == false)
{
// Maybe an invalid key or a key for a sub-category ..
continue;
}
final String clazz = configuration.getConfigProperty(key);
final Object maybeActionPlugin = ObjectUtilities.loadAndInstantiate
(clazz, DefaultActionFactory.class, ActionPlugin.class);
if (maybeActionPlugin == null)
{
DefaultActionFactory.logger.debug(DefaultActionFactory.MESSAGES.getString(
"DefaultActionFactory.DEBUG_NOT_ACTION_PLUGIN", category, clazz)); //$NON-NLS-1$
continue;
}
final ActionPlugin plugin = (ActionPlugin) maybeActionPlugin;
if (plugin.initialize(context) == false)
{
plugin.deinitialize(context);
continue;
}
final String role = plugin.getRole();
if (role == null)
{
plugins.put(plugin, plugin);
}
else
{
final ActionPlugin otherPlugin = (ActionPlugin) plugins.get(role);
if (otherPlugin != null)
{
if (plugin.getRolePreference() > otherPlugin.getRolePreference())
{
plugins.put(role, plugin);
otherPlugin.deinitialize(context);
}
else
{
DefaultActionFactory.logger.debug(DefaultActionFactory.MESSAGES.getString(
"DefaultActionFactory.DEBUG_PLUGIN_OVERRIDE", category, clazz,
otherPlugin.getClass().getName())); //$NON-NLS-1$
}
}
else
{
plugins.put(role, plugin);
}
}
}
DefaultActionFactory.logger.debug(DefaultActionFactory.MESSAGES.getString(
"DefaultActionFactory.DEBUG_RETURNING_PLUGINS", String.valueOf(plugins.size()),
category)); //$NON-NLS-1$ //$NON-NLS-2$
return (ActionPlugin[]) plugins.values().toArray
(new ActionPlugin[plugins.size()]);
}
private boolean isPluginKey(final String base)
{
if (base.length() < 1)
{
return false;
}
if (base.indexOf('.', 1) > 0)
{
return false;
}
return true;
}
}