com.mgmtp.perfload.loadprofiles.ui.util.SwingUtils.java Source code

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Here is the source code for com.mgmtp.perfload.loadprofiles.ui.util.SwingUtils.java

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/*
 * Copyright (c) 2014 mgm technology partners 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 com.mgmtp.perfload.loadprofiles.ui.util;

import java.awt.Font;
import java.awt.event.KeyEvent;
import java.io.File;
import java.util.Enumeration;

import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFileChooser;
import javax.swing.KeyStroke;
import javax.swing.UIDefaults.ProxyLazyValue;
import javax.swing.UIManager;
import javax.swing.filechooser.FileFilter;
import javax.swing.plaf.FontUIResource;

import org.apache.commons.io.FilenameUtils;

/**
 * Swing utility methods.
 * 
 * @author rnaegele
 */
public class SwingUtils {

    /**
     * Registers the enter key a {@link JButton}.
     * 
     * @param button
     *            The button
     */
    public static void enterPressesWhenFocused(final JButton button) {
        button.registerKeyboardAction(
                button.getActionForKeyStroke(KeyStroke.getKeyStroke(KeyEvent.VK_SPACE, 0, false)),
                KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0, false), JComponent.WHEN_FOCUSED);

        button.registerKeyboardAction(
                button.getActionForKeyStroke(KeyStroke.getKeyStroke(KeyEvent.VK_SPACE, 0, true)),
                KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0, true), JComponent.WHEN_FOCUSED);
    }

    /**
     * Sets the default UI font style.
     * 
     * @param fontStyle
     *            The font style
     * @see Font See Font Javadoc for possible styles
     */
    public static void setUIFontStyle(final int fontStyle) {
        for (Enumeration<?> en = UIManager.getDefaults().keys(); en.hasMoreElements();) {
            Object key = en.nextElement();
            Object value = UIManager.get(key);
            if (value instanceof FontUIResource) {
                FontUIResource fontRes = (FontUIResource) value;
                UIManager.put(key, new ProxyLazyValue("javax.swing.plaf.FontUIResource", null,
                        new Object[] { fontRes.getName(), fontStyle, fontRes.getSize() }));
            }
        }
    }

    public static JFileChooser createFileChooser(final File dir, final String description, final String extension) {
        JFileChooser fc = new JFileChooser(dir);
        fc.setFileSelectionMode(JFileChooser.FILES_ONLY);
        fc.setMultiSelectionEnabled(false);
        fc.setAcceptAllFileFilterUsed(false);
        fc.addChoosableFileFilter(new FileFilter() {

            @Override
            public String getDescription() {
                return description;
            }

            @Override
            public boolean accept(final File f) {
                return f.isDirectory() || FilenameUtils.isExtension(f.getName(), extension);
            }
        });
        return fc;
    }
}