/*!
* 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) 2002-2013 Pentaho Corporation.. All rights reserved.
*/
package org.pentaho.reporting.libraries.css.resolver.function;
import java.util.HashMap;
import java.util.Iterator;
import org.pentaho.reporting.libraries.base.config.Configuration;
import org.pentaho.reporting.libraries.base.util.ObjectUtilities;
import org.pentaho.reporting.libraries.css.LibCssBoot;
/**
* Creation-Date: 16.04.2006, 14:15:37
*
* @author Thomas Morgner
*/
public final class FunctionFactory
{
public static final String VALUE_FUNCTIONS_KEY_RANGE =
"org.pentaho.reporting.libraries.css.functions.values.";
public static final String CONTENT_FUNCTIONS_KEY_RANGE =
"org.pentaho.reporting.libraries.css.functions.content.";
private HashMap styleFunctions;
private HashMap contentFunctions;
private static FunctionFactory instance;
public static FunctionFactory getInstance()
{
if (instance == null)
{
instance = new FunctionFactory();
instance.registerDefault();
}
return instance;
}
private FunctionFactory()
{
styleFunctions = new HashMap();
contentFunctions = new HashMap();
}
public void registerDefault()
{
final Configuration config = LibCssBoot.getInstance().getGlobalConfig();
final Iterator valueKeys = config.findPropertyKeys(VALUE_FUNCTIONS_KEY_RANGE);
while (valueKeys.hasNext())
{
final String key = (String) valueKeys.next();
final String value = config.getConfigProperty(key);
final String name = key.substring(VALUE_FUNCTIONS_KEY_RANGE.length());
final Object maybeFunction = ObjectUtilities.loadAndInstantiate
(value, FunctionFactory.class, StyleValueFunction.class);
if (maybeFunction instanceof StyleValueFunction)
{
styleFunctions.put(name.toLowerCase(), maybeFunction);
}
}
final Iterator contentKeys = config.findPropertyKeys(CONTENT_FUNCTIONS_KEY_RANGE);
while (contentKeys.hasNext())
{
final String key = (String) contentKeys.next();
final String value = config.getConfigProperty(key);
final String name = key.substring(CONTENT_FUNCTIONS_KEY_RANGE.length());
final Object maybeFunction = ObjectUtilities.loadAndInstantiate
(value, FunctionFactory.class, ContentFunction.class);
if (maybeFunction instanceof ContentFunction)
{
contentFunctions.put(name.toLowerCase(), maybeFunction);
}
}
}
public StyleValueFunction getStyleFunction(final String name)
{
final StyleValueFunction function = (StyleValueFunction) styleFunctions.get(name.toLowerCase());
if (function == null)
{
//Log.warn ("Unrecognized style function encountered: " + name);
}
// todo: Check for null values in all callers ..
return function;
}
public ContentFunction getContentFunction(final String name)
{
final ContentFunction function = (ContentFunction) contentFunctions.get(name.toLowerCase());
if (function == null)
{
//Log.warn ("Unrecognized content function encountered: " + name);
}
// todo: Check for null values in all callers ..
return function;
}
}