org.teamapps.ux.i18n.MultiResourceBundle Maven / Gradle / Ivy
/*-
* ========================LICENSE_START=================================
* TeamApps
* ---
* Copyright (C) 2014 - 2023 TeamApps.org
* ---
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* =========================LICENSE_END==================================
*/
package org.teamapps.ux.i18n;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Enumeration;
import java.util.List;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
import java.util.stream.Collectors;
public class MultiResourceBundle extends ResourceBundle {
private List resourceBundles = new ArrayList<>();
public MultiResourceBundle() {
this(new ResourceBundle[0]);
}
public MultiResourceBundle(ResourceBundle... resourceBundles) {
for (ResourceBundle resourceBundle : resourceBundles) {
if (resourceBundle != null) {
addResourceBundle(resourceBundle);
}
}
}
public void addResourceBundle(ResourceBundle resourceBundle) {
resourceBundles.add(resourceBundle);
}
@Override
protected Object handleGetObject(String key) {
for (ResourceBundle resourceBundle : resourceBundles) {
String value = getString(key, resourceBundle);
if (value != null) {
return value;
}
}
return key;
}
@Override
public Enumeration getKeys() {
return Collections.enumeration(resourceBundles.stream()
.flatMap(bundle -> bundle.keySet().stream())
.collect(Collectors.toSet()));
}
private String getString(String key, ResourceBundle resourceBundle) {
if (resourceBundle == null) {
return null;
}
try {
return resourceBundle.getString(key);
} catch (MissingResourceException ignore) { }
return null;
}
}