aboutdialog.java

具有不同语法高亮的编辑器实例

/*
 * 09/02/2004
 *
 * AboutDialog.java - An About dialog for an application.
 * Copyright (C) 2003 Robert Futrell
 * [e-mail]
 * www.website.com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
package org.fife.ui;

import java.awt.Rectangle;
import javax.swing.Scrollable;
import javax.swing.SwingConstants;

import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Frame;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.util.ResourceBundle;
import javax.swing.AbstractAction;
import javax.swing.ActionMap;
import javax.swing.BorderFactory;
import javax.swing.BoxLayout;
import javax.swing.InputMap;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JRootPane;
import javax.swing.JTabbedPane;
import javax.swing.JTextArea;
import javax.swing.KeyStroke;
import javax.swing.SpringLayout;
import javax.swing.SwingUtilities;

import org.fife.RUtilities;


/**
 * An "About Dialog" for an application.
 *
 * @author Robert Futrell
 * @version 0.8
 */
public class AboutDialog extends JDialog implements ActionListener {

	/**
	 * 
	 */
	private static final long serialVersionUID = 6658907392608834135L;

	private JButton okButton;
	private JButton licenseButton;
	private Frame parent;

	private JTabbedPane tabbedPane;

	private ResourceBundle bundle;


/*****************************************************************************/


	/**
	 * Creates a new <code>AboutDialog</code>.
	 *
	 * @param parent The owner of this dialog.
	 */
	public AboutDialog(Frame parent) {
		this(parent, null);
	}


/*****************************************************************************/


	/**
	 * Creates a new <code>AboutDialog</code>.
	 *
	 * @param parent The owner of this dialog.
	 * @param title The title of the about dialog.
	 */
	public AboutDialog(Frame parent, String title) {

		super(parent);
		this.parent = parent;

		bundle = ResourceBundle.getBundle("org.fife.ui.UI");

		// Set the main content pane for the "About" dialog.
		JPanel contentPane = new JPanel(new BorderLayout());
		contentPane.setBorder(UIUtilities.getEmpty5Border());
		setContentPane(contentPane);

		tabbedPane = new JTabbedPane();
		contentPane.add(tabbedPane);

		// Add a panel to the tabbed pane about the Java environment.
		JPanel temp = UIUtilities.createTabbedPanePanel();
		temp.setLayout(new BorderLayout());
		temp.setBorder(UIUtilities.getEmpty5Border());
		temp.add(new JLabel(bundle.getString("EnvironInfo")),
						BorderLayout.NORTH);
		InfoPanel environPanel = new InfoPanel(bundle);
		// Make scroll pane's visible area "too small" so that the About
		// dialog will only be as large as the largest panel added by the
		// user.
		temp.add(new RScrollPane(10,10, environPanel));
		tabbedPane.add(bundle.getString("Environment"), temp);

		// Add the OK and license buttons.
		JPanel buttonPanel = new JPanel();
		temp = new JPanel(new GridLayout(1,2, 5,0));
		okButton = RUtilities.createRButton(bundle, "OK", "OKButtonMnemonic");
		okButton.setActionCommand("OK");
		okButton.addActionListener(this);
		temp.add(okButton);
		licenseButton = RUtilities.createRButton(bundle, "License",
										"LicenseButtonMnemonic");
		licenseButton.setActionCommand("License");
		licenseButton.addActionListener(this);
		temp.add(licenseButton);
		buttonPanel.add(temp);
		contentPane.add(buttonPanel, BorderLayout.SOUTH);

		// Put everything into a neat little package.
		getRootPane().setDefaultButton(okButton);
		setTitle(title!=null ? title : bundle.getString("AboutDialogTitle"));
		setModal(true);

		// Make the escape key hide the dialog.
		JRootPane rootPane = getRootPane();
		InputMap inputMap = rootPane.getInputMap(
								JComponent.WHEN_IN_FOCUSED_WINDOW);
		ActionMap actionMap = rootPane.getActionMap();
		inputMap.put(KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0), "OnEsc");
   		actionMap.put("OnEsc", new AbstractAction() {
				public void actionPerformed(ActionEvent e) {
					setVisible(false);
				}
			}
		);

		// Ensure that the first tab is the one initially shown
		// (starting in J2SE 5.0, this isn't the default behavior;
		// the last tab added is initially shown).
		SwingUtilities.invokeLater(new Runnable() {
			public void run() {
				tabbedPane.setSelectedIndex(0);
			}
		});

	}


/*****************************************************************************/


	/**
	 * Called whenever an action occurs in this dialog.
	 */
	public void actionPerformed(ActionEvent e) {
		String actionCommand = e.getActionCommand();

		if (actionCommand.equals("OK")) {
			setVisible(false);
		}

		else if (actionCommand.equals("License")) {
			GPLLicenseDialog licenseDialog = new GPLLicenseDialog();
			licenseDialog.setVisible(true);
		}

	}


/*****************************************************************************/


	/**
	 * Adds a panel to the tabbed pane.
	 *
	 * @param title The title for the panel.
	 * @param panel The panel to add.
	 */
	public void addPanel(String title, Component panel) {
		// Keep the "Environment" tab last.
		tabbedPane.insertTab(title, null, panel, null,
							tabbedPane.getTabCount()-1);
		pack();
		setLocationRelativeTo(parent);
	}


/*****************************************************************************/
/************************ PRIVATE INNER CLASSES ******************************/
/*****************************************************************************/


	// This class is simply a dialog box that displays the GNU GPL.
	class GPLLicenseDialog extends JDialog implements ActionListener {

	/**
	 * 
	 */
	private static final long serialVersionUID = 3415329148564950239L;

		GPLLicenseDialog() {
			super();
			setTitle(bundle.getString("LicenseDialogTitle"));
			JPanel contentPane = new JPanel();
			BoxLayout box = new BoxLayout(contentPane, BoxLayout.Y_AXIS);
			contentPane.setLayout(box);
			contentPane.setBorder(UIUtilities.getEmpty5Border());
			setContentPane(contentPane);

			JTextArea textArea = new JTextArea();
			textArea.setText(
				"This program is free software; you can redistribute it and/or modify " +
				"it under the terms of the GNU General Public License as published by " +
				"the Free Software Foundation; either version 2 of the License, or " +
				"(at your option) any later version.\n\n" +
				"This program 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 General Public License for more details.\n\n" +
				"You should have received a copy of the GNU General Public License " +
				"along with this program; if not, write to the Free Software " +
				"Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA");
			textArea.setFont(new Font("monospaced", Font.PLAIN, 12));
			textArea.setLineWrap(true);
			textArea.setWrapStyleWord(true);
			textArea.setEditable(false);
			textArea.setCaretPosition(0);
			RScrollPane scrollPane = new RScrollPane(400,200, textArea);
			contentPane.add(scrollPane);
			JPanel buttonPanel = new JPanel();
			RButton okButton = RUtilities.createRButton(bundle, "OK",
											"OKButtonMnemonic");
			okButton.addActionListener(this);
			buttonPanel.add(okButton);
			contentPane.add(buttonPanel);
			setModal(true);
			setResizable(false);
			pack();
			setLocationRelativeTo(AboutDialog.this);
		}

		public void actionPerformed(ActionEvent e) {
			setVisible(false);
		}

	}


/*****************************************************************************/


	/**
	 * The panel containing system information.
	 */
	class InfoPanel extends JPanel implements Scrollable {

		private static final long serialVersionUID = 7101643582202764925L;

		InfoPanel(ResourceBundle msg) {

			super(new SpringLayout());

			addProperty(msg.getString("Environment.Label.JavaVersion"),
						"java.version");
			addProperty(msg.getString("Environment.Label.JavaVendor"),
						"java.vendor");
			addProperty(msg.getString("Environment.Label.JavaVMVersion"),
						"java.vm.version");
			addProperty(msg.getString("Environment.Label.JavaVMVendor"),
						"java.vm.vendor");
			addProperty(msg.getString("Environment.Label.JavaSpecification"),
						"java.specification.name");
			addProperty(msg.getString("Environment.Label.JavaSpecificationVersion"),
						"java.specification.version");
			addProperty(msg.getString("Environment.Label.Classpath"),
						"java.class.path");
			addProperty(msg.getString("Environment.Label.OS"),
						"os.name");
			addProperty(msg.getString("Environment.Label.OSVersion"),
						"os.version");

			RUtilities.makeSpringCompactGrid(this, 9,2,	//rows, cols
										0,0,		//initX, initY
										6, 6);	//xPad, yPad

		}

		/**
		 * Adds a property/value pair to the panel.
		 */
		private final void addProperty(String name, String key) {
			JLabel label = new JLabel(name);
			label.setFont(label.getFont().deriveFont(Font.BOLD));
			add(label);
			label = new JLabel(System.getProperty(key));
			add(label);
		}


		public Dimension getPreferredScrollableViewportSize() {
			return getPreferredSize();
		}

		public int getScrollableBlockIncrement(Rectangle visibleRect,
									int orientation, int direction) {
			if (orientation==SwingConstants.VERTICAL)
				return getHeight();
			else // SwingConstants.HORIZONTAL
				return getWidth();
		}

		public boolean getScrollableTracksViewportHeight() {
			return false;
		}

		public boolean getScrollableTracksViewportWidth() {
			return false;
		}

		public int getScrollableUnitIncrement(Rectangle visibleRect,
									int orientation, int direction) {
			return 8;
		}

	}


/*****************************************************************************/

}