JMeter example source code file (LookAndFeelCommand.java)

This example JMeter source code file (LookAndFeelCommand.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - JMeter tags/keywords

awt, classnotfoundexception, event, feel, feel, gui, illegalaccessexception, instantiationexception, look, look, lookandfeelcommand, non-nls-1, non-nls-1, set, string, string, swing, unsupportedlookandfeelexception, util

The JMeter LookAndFeelCommand.java source code

/*
 * 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.jmeter.gui.action;

import java.awt.event.ActionEvent;
import java.util.HashSet;
import java.util.Locale;
import java.util.Set;

import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;

import org.apache.jmeter.gui.GuiPackage;
import org.apache.jmeter.util.JMeterUtils;

/**
 * Implements the Look and Feel menu item.
 */
public class LookAndFeelCommand implements Command {

    private static final String JMETER_LAF = "jmeter.laf"; // $NON-NLS-1$

    private static final Set<String> commands = new HashSet();

    static {
        UIManager.LookAndFeelInfo[] lfs = UIManager.getInstalledLookAndFeels();
        for (int i = 0; i < lfs.length; i++) {
            commands.add(ActionNames.LAF_PREFIX + lfs[i].getClassName());
        }

        try {
            UIManager.setLookAndFeel(getJMeterLaf());
        } catch (IllegalAccessException e) {
        } catch (ClassNotFoundException e) {
        } catch (InstantiationException e) {
        } catch (UnsupportedLookAndFeelException e) {
        }
    }

    /**
     * Get LookAndFeel classname from the following properties:
     * <ul>
     * <li>jmeter.laf.<os.name> - lowercased; spaces replaced by '_'
     * <li>jmeter.laf.<os.family> - lowercased.
     * <li>jmeter.laf
     * <li>UIManager.getCrossPlatformLookAndFeelClassName()
     * </ul>
     * @return LAF classname
     */
    private static String getJMeterLaf(){
        String osName = System.getProperty("os.name") // $NON-NLS-1$
                        .toLowerCase(Locale.ENGLISH);
        String laf;
        // Spaces are not allowed in property names read from files
        laf = JMeterUtils.getProperty(JMETER_LAF+"."+osName.replace(' ', '_'));
        if (laf != null) {
            return checkLafName(laf);
        }
        String[] osFamily = osName.split("\\s"); // e.g. windows xp => windows
        laf = JMeterUtils.getProperty(JMETER_LAF+"."+osFamily[0]);
        if (laf != null) {
            return checkLafName(laf);
        }
        laf = JMeterUtils.getProperty(JMETER_LAF);
        if (laf != null) {
            return checkLafName(laf);
        }
        return UIManager.getCrossPlatformLookAndFeelClassName();
    }

    // Check if LAF is a built-in one
    private static String checkLafName(String laf){
        if ("system".equalsIgnoreCase(laf)){ // $NON-NLS-1$
            return UIManager.getSystemLookAndFeelClassName();
        }
        if ("crossplatform".equalsIgnoreCase(laf)){ // $NON-NLS-1$
            return UIManager.getCrossPlatformLookAndFeelClassName();
        }
        return laf;
    }

    public LookAndFeelCommand() {
    }

    public void doAction(ActionEvent ev) {
        try {
            String className = ev.getActionCommand().substring(4).replace('/', '.');
            UIManager.setLookAndFeel(className);
            SwingUtilities.updateComponentTreeUI(GuiPackage.getInstance().getMainFrame());
        } catch (javax.swing.UnsupportedLookAndFeelException e) {
            JMeterUtils.reportErrorToUser("Look and Feel unavailable:" + e.toString());
        } catch (InstantiationException e) {
            JMeterUtils.reportErrorToUser("Look and Feel unavailable:" + e.toString());
        } catch (ClassNotFoundException e) {
            JMeterUtils.reportErrorToUser("Look and Feel unavailable:" + e.toString());
        } catch (IllegalAccessException e) {
            JMeterUtils.reportErrorToUser("Look and Feel unavailable:" + e.toString());
        }
    }

    public Set<String> getActionNames() {
        return commands;
    }
}