org.springframework.ui.context.HierarchicalThemeSource Maven / Gradle / Ivy
/*
* Copyright 2002-2012 the original author or authors.
*
* 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
*
* https://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.
*/
package org.springframework.ui.context;
import org.springframework.lang.Nullable;
/**
* Sub-interface of ThemeSource to be implemented by objects that
* can resolve theme messages hierarchically.
*
* @author Jean-Pierre Pawlak
* @author Juergen Hoeller
*/
public interface HierarchicalThemeSource extends ThemeSource {
/**
* Set the parent that will be used to try to resolve theme messages
* that this object can't resolve.
* @param parent the parent ThemeSource that will be used to
* resolve messages that this object can't resolve.
* May be {@code null}, in which case no further resolution is possible.
*/
void setParentThemeSource(@Nullable ThemeSource parent);
/**
* Return the parent of this ThemeSource, or {@code null} if none.
*/
@Nullable
ThemeSource getParentThemeSource();
}