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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.zookeeper.inspector.gui;
import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import javax.swing.ImageIcon;
import org.apache.zookeeper.inspector.logger.LoggerFactory;
/**
* @link http://standards.freedesktop.org/icon-naming-spec/icon-naming-spec-latest.html
* I tried to take icons that are available in the Tango icon set.
*
* @link http://tango.freedesktop.org/Tango_Icon_Library
* The Tango icon set can be found under the "Download" section.
*/
public class IconResource {
public static final String ICON_CHANGE_NODE_VIEWERS = "categories/applications-system";
public static final String ICON_TREE_LEAF = "mimetypes/text-x-generic";
public static final String ICON_TREE_OPEN = "places/folder";
public static final String ICON_TREE_CLOSE = "places/folder";
public static final String ICON_INFORMATION = "status/info";
public static final String ICON_SAVE = "actions/document-save";
public static final String ICON_UP = "actions/up";
public static final String ICON_DOWN = "actions/down";
public static final String ICON_ADD = "actions/add";
public static final String ICON_REMOVE = "actions/remove";
public static final String ICON_START = "actions/media-playback-start";
public static final String ICON_STOP = "actions/media-playback-stop";
public static final String ICON_DOCUMENT_ADD = "actions/document-new";
public static final String ICON_REFRESH = "actions/view-refresh";
public static final String ICON_TRASH = "places/user-trash";
// better: actions/help-about, but not in tango
public static final String ICON_HELP_ABOUT = "status/info";
private static final String DEFAULT_THEME = "Tango";
private static final String DEFAULT_SIZE = "16x16";
private static final String FALLBACK_ICON = "face-surprise";
// compare http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html
private static final String[] DEFAULT_XDG_DATA_DIRS = new String[]{
"/usr/local/share",
"/usr/share"
};
private String theme = DEFAULT_THEME;
private String size = DEFAULT_SIZE;
public URL find(String name) {
String iconPath = buildIconPath(name);
URL iconUrl = findInPaths(iconPath);
if(null != iconUrl) return iconUrl;
iconUrl = getClass().getResource(iconPath);
if(null != iconUrl) return iconUrl;
if(!name.equals(FALLBACK_ICON)) return find(FALLBACK_ICON);
return null;
}
public ImageIcon get(String name, String description) {
URL iconUrl = find(name);
if(null==iconUrl) {
ImageIcon icon = new ImageIcon();
icon.setDescription(description);
return icon;
} else {
return new ImageIcon(iconUrl, description);
}
}
private URL findInPaths(String iconPath) {
for(String dataDir : DEFAULT_XDG_DATA_DIRS) {
File file = new File(dataDir + iconPath);
if(file.exists()) {
try {
return file.toURI().toURL();
} catch (MalformedURLException e) {
LoggerFactory.getLogger().warn(e.toString());
}
}
}
return null;
}
private String buildIconPath(String name) {
return "/icons/" + theme + "/" + size + "/" + name + ".png";
}
}
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