se.europeanspallationsource.xaos.ui.spi.impl.DefaultJavaFXClassIconProvider Maven / Gradle / Ivy

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JavaFX-based portion of the XAOS framework, containing the JavaFX-based controls and tools suitable for other projects too.
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/*
 * Copyright 2018 European Spallation Source ERIC.
 *
 * 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 se.europeanspallationsource.xaos.ui.spi.impl;


import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.text.MessageFormat;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.logging.Logger;
import javafx.scene.Node;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import org.apache.commons.lang3.StringUtils;
import se.europeanspallationsource.xaos.core.util.LogUtils;
import se.europeanspallationsource.xaos.tools.annotation.ServiceProvider;
import se.europeanspallationsource.xaos.ui.spi.ClassIconProvider;

import static java.util.logging.Level.SEVERE;


/**
 * Provides default icons (i.e. {@link Node}s) for a given file extension.
 *
 * @author [email protected]
 */
@SuppressWarnings( { "NestedAssignment", "UseOfSystemOutOrSystemErr" } )
@ServiceProvider( service = ClassIconProvider.class )
public class DefaultJavaFXClassIconProvider extends BaseProvider implements ClassIconProvider {

	private static final Logger LOGGER = Logger.getLogger(DefaultJavaFXClassIconProvider.class.getName());
	private static final Map RESOURCES_MAP;

	/**
	 * static initializer.
	 */
	static {

		Map map = new HashMap<>(120);

		try (
			InputStream in = getResourceAsStream("icons/fxcomponents/icons-list.txt");
			BufferedReader br = new BufferedReader(new InputStreamReader(in))
		) {

			String resource;

			while ( ( resource = br.readLine() ) != null ) {
				if ( !resource.trim().startsWith("#") ) {
					map.put(
						resource.substring(0, resource.lastIndexOf('.')),
						"icons/fxcomponents/" + resource
					);
				}
			}

		} catch ( IOException ex ) {
			LogUtils.log(LOGGER, SEVERE, ex);
		}

		//	Print map if xaos.test.verbose is set to true.
		verbosePrintout(
			map,
			MessageFormat.format(
				"Resource names found [{0}]",
				DefaultJavaFXClassIconProvider.class.getSimpleName()
			)
		);

		RESOURCES_MAP = Collections.unmodifiableMap(map);

	}

	private static InputStream getResourceAsStream( String resource ) {

		InputStream in = Thread.currentThread().getContextClassLoader().getResourceAsStream(resource);

		return ( in == null )
			   ? DefaultJavaFXClassIconProvider.class.getResourceAsStream(resource)
			   : in;

	}

	@Override
	public Node iconFor( String clazz, int size ) {

		if ( StringUtils.isBlank(clazz) || size <= 0 ) {
			return null;
		}
		
		ImageView node = null;

		if ( clazz.startsWith("javafx.") ) {

			String simpleName = clazz.substring(1 + clazz.lastIndexOf('.'));

			if ( StringUtils.isNotBlank(simpleName) ) {

				String resource = RESOURCES_MAP.get(simpleName);

				if ( resource != null ) {

					node = new ImageView(new Image(
						DefaultJavaFXClassIconProvider.class.getResource(resource).toString(),
						true
					));

					node.setPreserveRatio(true);

					Image image = node.getImage();

					if ( image.getWidth() > image.getHeight() ) {
						node.setFitWidth(size);
					} else {
						node.setFitHeight(size);
					}

				}

			}

		}

		return node;

	}

}