Java Swing Icon loadIcons(String list, String path, Set<String> ignore, ClassLoader loader)

Description

Loads a map of icons.

License

Open Source License

Parameter

Parameter	Description
list	a path to a property-file containing key-path-pairs.
path	the base path to the icons, will be added before any path of the property file, can be <code>null</code>
ignore	keys that are already present in <code>ignore</code> are not loaded, can be <code>null</code>
loader	used to transform paths into urls.

Return

the map of s, the map can be empty if no icons were found

Declaration

public static Map<String, Icon> loadIcons(String list, String path, Set<String> ignore, ClassLoader loader)

Method Source Code

//package com.java2s;
/*//w ww . j  a v  a  2 s.  com
 * Bibliothek - DockingFrames
 * Library built on Java/Swing, allows the user to "drag and drop"
 * panels containing any Swing-Co
    
mponent the developer likes to add.
 * 
 * Copyright (C) 2007 Benjamin Sigg
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 * Benjamin Sigg
 * benjamin_sigg@gmx.ch
 * CH - Switzerland
 */

import java.io.IOException;
import java.io.InputStream;
import java.net.URL;

import java.util.HashMap;

import java.util.Map;
import java.util.Properties;
import java.util.Set;
import javax.swing.Icon;
import javax.swing.ImageIcon;

public class Main {
    /**
     * Loads a map of icons.
     * @param list a path to a property-file containing key-path-pairs.
     * @param path the base path to the icons, will be added before any
     * path of the property file, can be <code>null</code>
     * @param loader used to transform paths into urls.
     * @return the map of {@link Icon}s, the map can be empty if no icons were found
     * @see Properties#load(InputStream)
     */
    public static Map<String, Icon> loadIcons(String list, String path, ClassLoader loader) {
        return loadIcons(list, path, null, loader);
    }

    /**
     * Loads a map of icons.
     * @param list a path to a property-file containing key-path-pairs.
     * @param path the base path to the icons, will be added before any
     * path of the property file, can be <code>null</code>
     * @param ignore keys that are already present in <code>ignore</code> are not loaded, can be <code>null</code>
     * @param loader used to transform paths into urls.
     * @return the map of {@link Icon}s, the map can be empty if no icons were found
     * @see Properties#load(InputStream)
     */
    public static Map<String, Icon> loadIcons(String list, String path, Set<String> ignore, ClassLoader loader) {
        try {
            InputStream in = loader.getResourceAsStream(list);
            if (in == null)
                return new HashMap<String, Icon>();

            Properties properties = new Properties();
            properties.load(in);
            in.close();

            int index = list.lastIndexOf('/');
            if (index > 0) {
                if (path == null) {
                    path = list.substring(0, index + 1);
                } else {
                    path = list.substring(0, index + 1) + path;
                }
            }

            Map<String, Icon> result = new HashMap<String, Icon>();
            for (Map.Entry<Object, Object> entry : properties.entrySet()) {
                String key = (String) entry.getKey();

                if (ignore == null || !ignore.contains(key)) {
                    String file = (String) entry.getValue();
                    if (path != null)
                        file = path + file;

                    URL url = loader.getResource(file);
                    if (url == null) {
                        System.err.println("Missing file: " + file);
                    } else {
                        ImageIcon icon = new ImageIcon(url);
                        result.put(key, icon);
                    }
                }
            }

            return result;
        } catch (IOException ex) {
            ex.printStackTrace();
            return new HashMap<String, Icon>();
        }
    }
}

Java Swing Icon loadIcons(String list, String path, Set ignore, ClassLoader loader)

Description

License

Parameter

Return

Declaration

Method Source Code

Related