content: /*
   * Copyright 2019 FormDev Software GmbH
   *
   * 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.
   */
  
  package themeengine.include.com.formdev.flatlaf;
  
  import java.io.InputStream;
  import javax.swing.LookAndFeel;
  import javax.swing.UIDefaults;
  
  /**
   * Addon for FlatLaf UI defaults.
   *
   * Allows loading of additional .properties files from addon JARs.
   * {@link java.util.ServiceLoader} is used to load extensions of this class from addon JARs.
   * <p>
   * If you extend this class in a addon JAR, you also have to add a text file named
   * {@code META-INF/services/themeengine.include.com.formdev.flatlaf.FlatDefaultsAddon}
   * to the addon JAR. The file must contain a single line with the class name.
   * <p>
   * See 'flatlaf-swingx' addon for an example
   *
   * @author Karl Tauber
   */
  public abstract class FlatDefaultsAddon
  {
  	/**
  	 * Finds an addon .properties file for the given LaF class and returns
  	 * it as input stream. Or {@code null} if not found.
  	 * <p>
  	 * This default implementation finds addon .properties file for the given LaF class
  	 * in the same package as the subclass.
  	 * <p>
  	 * Override this method to load addon .properties files from other locations.
  	 */
  	public InputStream getDefaults( Class<?> lafClass ) {
  		Class<?> addonClass = this.getClass();
  		String propertiesName = '/' + addonClass.getPackage().getName().replace( '.', '/' )
  			+ '/' + lafClass.getSimpleName() + ".properties";
  		return addonClass.getResourceAsStream( propertiesName );
  	}
  
  	/**
  	 * Allows modifying UI defaults after loading UI defaults.
  	 * The default implementation does nothing.
  	 */
  	public void afterDefaultsLoading( LookAndFeel laf, UIDefaults defaults ) {
  	}
  
  	/**
  	 * Returns the priority used to sort addon loading.
  	 * The order is only important if you want overwrite UI defaults of other addons.
  	 * Lower numbers mean higher priority.
  	 * Returns 10000 by default.
  	 */
  	public int getPriority() {
  		return 10000;
  	}
  }
  