spring ThemeSource 源码
spring ThemeSource 代码
文件路径：/spring-context/src/main/java/org/springframework/ui/context/ThemeSource.java
/*
* 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;
/**
* Interface to be implemented by objects that can resolve {@link Theme Themes}.
* This enables parameterization and internationalization of messages
* for a given 'theme'.
*
* @author Jean-Pierre Pawlak
* @author Juergen Hoeller
* @see Theme
*/
public interface ThemeSource {
/**
* Return the Theme instance for the given theme name.
* <p>The returned Theme will resolve theme-specific messages, codes,
* file paths, etc (e.g. CSS and image files in a web environment).
* @param themeName the name of the theme
* @return the corresponding Theme, or {@code null} if none defined.
* Note that, by convention, a ThemeSource should at least be able to
* return a default Theme for the default theme name "theme" but may also
* return default Themes for other theme names.
* @see org.springframework.web.servlet.theme.AbstractThemeResolver#ORIGINAL_DEFAULT_THEME_NAME
*/
@Nullable
Theme getTheme(String themeName);
}
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