90 lines
3.5 KiB
Java
90 lines
3.5 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* $Header:$
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*/
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package org.apache.beehive.controls.runtime.bean;
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import java.util.Locale;
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import java.util.MissingResourceException;
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import java.util.ResourceBundle;
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/**
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* The ControlBeanInfo class is an abstract base class for the JavaBean BeanInfo classes generated
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* to support Beehive controls. It is used to bundle helper code common across all generated
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* BeanInfo classes.
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*/
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abstract public class ControlBeanInfo extends java.beans.SimpleBeanInfo
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{
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/**
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* Protected constructor that is called from generated BeanInfo subclasses.
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* @param beanClass the JavaBean class for which BeanInfo is being provided.
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*/
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protected ControlBeanInfo(Class beanClass)
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{
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super();
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_beanClass = beanClass;
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}
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/*
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* Gets a possibly-localized string for the given input string.
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* @param input This the the string that may be localizable. If it is of the form
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* "%foo.bar.Baz%", then the resource Baz will be looked up in the foo.bar bundle using
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* standard ResourceBundle rules for the default Locale using the control's classloader.
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* If the input does not start and end with '%', or if the bundle is not located, the string
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* will be returned verbatim.
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* @return the string to be displayed, or the input string if no resource is found.
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*/
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final protected String localizeString(String input)
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{
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if (input == null || !input.startsWith("%") || !input.endsWith("%"))
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return input;
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String bundleName = input.substring(1, input.length()-1);
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String resourceName = null;
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int lastDot = bundleName.lastIndexOf('.');
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while (lastDot != -1 && lastDot != 0 && (lastDot+1 < bundleName.length()))
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{
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// move last element from bundle to resource. foo.bar.Baz could be the
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// Baz property in foo.bar, or the bar.Baz property in foo.
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if (resourceName == null)
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resourceName = bundleName.substring(lastDot+1);
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else
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resourceName = bundleName.substring(lastDot+1) + '.' + resourceName;
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bundleName = bundleName.substring(0, lastDot);
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try
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{
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ResourceBundle bundle = ResourceBundle.getBundle(bundleName, Locale.getDefault(),
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_beanClass.getClassLoader());
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if (bundle != null)
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{
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String lookup = bundle.getString(resourceName);
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if (lookup != null)
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return lookup;
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}
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}
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catch (MissingResourceException mre)
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{ }
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lastDot = bundleName.lastIndexOf('.');
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}
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return input;
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}
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Class _beanClass;
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}
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