stylepad.java

一个用Java写的notepad（记事本）^-^

/*
 * @(#)Stylepad.java	1.22 05/11/17
 * 
 * Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 * -Redistribution of source code must retain the above copyright notice, this
 *  list of conditions and the following disclaimer.
 * 
 * -Redistribution in binary form must reproduce the above copyright notice, 
 *  this list of conditions and the following disclaimer in the documentation
 *  and/or other materials provided with the distribution.
 * 
 * Neither the name of Sun Microsystems, Inc. or the names of contributors may 
 * be used to endorse or promote products derived from this software without 
 * specific prior written permission.
 * 
 * This software is provided "AS IS," without a warranty of any kind. ALL 
 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING
 * ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
 * OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN MIDROSYSTEMS, INC. ("SUN")
 * AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE
 * AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
 * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST 
 * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, 
 * INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY 
 * OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, 
 * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
 * 
 * You acknowledge that this software is not designed, licensed or intended
 * for use in the design, construction, operation or maintenance of any
 * nuclear facility.
 */

/*
 * @(#)Stylepad.java	1.22 05/11/17
 */


import java.awt.*;
import java.awt.event.*;
import java.net.URL;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
import javax.swing.text.*;
import javax.swing.*;

import java.io.*;

/**
 * Sample application using JTextPane.
 *
 * @author Timothy Prinzing
 * @version 1.22 11/17/05 
 */
public class Stylepad extends Notepad {

    private static ResourceBundle resources;

    static {
        try {
            resources = ResourceBundle.getBundle("resources.Stylepad");
        } catch (MissingResourceException mre) {
            System.err.println("Stylepad.properties not found");
            System.exit(0);
        }
    }

    public Stylepad() {
	super();
    }
    
    public static void main(String[] args) {
        String vers = System.getProperty("java.version");
        if (vers.compareTo("1.1.2") < 0) {
            System.out.println("!!!WARNING: Swing must be run with a " +
                               "1.1.2 or higher version VM!!!");
        }
        JFrame frame = new JFrame();
        frame.setTitle(resources.getString("Title"));
	frame.setBackground(Color.lightGray);
	frame.getContentPane().setLayout(new BorderLayout());
        Stylepad stylepad = new Stylepad();
	frame.getContentPane().add("Center", stylepad);
        frame.setJMenuBar(stylepad.createMenubar());
	frame.addWindowListener(new AppCloser());
	frame.pack();
	frame.setSize(600, 480);
        frame.show();
    }

    /**
     * Fetch the list of actions supported by this
     * editor.  It is implemented to return the list
     * of actions supported by the superclass
     * augmented with the actions defined locally.
     */
    public Action[] getActions() {
        Action[] defaultActions = {
            new NewAction(),
            new OpenAction(),
            new SaveAction(),
            new StyledEditorKit.FontFamilyAction("font-family-LucidaSans", 
                                                 "Lucida Sans"),
        };
        Action[] a = TextAction.augmentList(super.getActions(), defaultActions);
	return a;
    }

    /**
     * Try and resolve the resource name in the local
     * resource file, and if not found fall back to
     * the superclass resource file.
     */
    protected String getResourceString(String nm) {
	String str;
	try {
	    str = this.resources.getString(nm);
	} catch (MissingResourceException mre) {
	    str = super.getResourceString(nm);
	}
	return str;
    }

    /**
     * Create an editor to represent the given document.  
     */
    protected JTextComponent createEditor() {
	StyleContext sc = new StyleContext();
	DefaultStyledDocument doc = new DefaultStyledDocument(sc);
	initDocument(doc, sc);
        JTextPane p = new JTextPane(doc);
	p.setDragEnabled(true);
        
        //p.getCaret().setBlinkRate(0);
        
        return p;
    }

    /**
     * Create a menu for the app.  This is redefined to trap 
     * a couple of special entries for now.
     */
    protected JMenu createMenu(String key) {
	if (key.equals("color")) {
	    return createColorMenu();
	} 
	return super.createMenu(key);
    }


    // this will soon be replaced
    JMenu createColorMenu() {
	ActionListener a;
	JMenuItem mi;
	JMenu menu = new JMenu(getResourceString("color" + labelSuffix));
	mi = new JMenuItem(resources.getString("Red"));
	mi.setHorizontalTextPosition(JButton.RIGHT);
	mi.setIcon(new ColoredSquare(Color.red));
	a = new StyledEditorKit.ForegroundAction("set-foreground-red", Color.red);
	//a = new ColorAction(se, Color.red);
	mi.addActionListener(a);
	menu.add(mi);
	mi = new JMenuItem(resources.getString("Green"));
	mi.setHorizontalTextPosition(JButton.RIGHT);
	mi.setIcon(new ColoredSquare(Color.green));
	a = new StyledEditorKit.ForegroundAction("set-foreground-green", Color.green);
	//a = new ColorAction(se, Color.green);
	mi.addActionListener(a);
	menu.add(mi);
	mi = new JMenuItem(resources.getString("Blue"));
	mi.setHorizontalTextPosition(JButton.RIGHT);
	mi.setIcon(new ColoredSquare(Color.blue));
	a = new StyledEditorKit.ForegroundAction("set-foreground-blue", Color.blue);
	//a = new ColorAction(se, Color.blue);
	mi.addActionListener(a);
	menu.add(mi);

	return menu;
    }

    void initDocument(DefaultStyledDocument doc, StyleContext sc) {
	Wonderland w = new Wonderland(doc, sc);
	//HelloWorld h = new HelloWorld(doc, sc);
	Icon alice = new ImageIcon(resources.getString("aliceGif"));
	w.loadDocument();
    }

    JComboBox createFamilyChoices() {
        JComboBox b = new JComboBox();
	String[] fonts = getToolkit().getFontList();
	for (int i = 0; i < fonts.length; i++) {
	    b.addItem(fonts[i]);
	}
	return b;
    }

    /**
     * Trys to read a file which is assumed to be a 
     * serialization of a document.
     */
    class OpenAction extends AbstractAction {

	OpenAction() {
	    super(openAction);
	}

        public void actionPerformed(ActionEvent e) {
	    Frame frame = getFrame();
	    if (fileDialog == null) {
		fileDialog = new FileDialog(frame);
	    }
	    fileDialog.setMode(FileDialog.LOAD);
	    fileDialog.show();
	    
	    String file = fileDialog.getFile();
	    if (file == null) {
		return;
	    }
	    String directory = fileDialog.getDirectory();
	    File f = new File(directory, file);
	    if (f.exists()) {
		try {
		    FileInputStream fin = new FileInputStream(f);
		    ObjectInputStream istrm = new ObjectInputStream(fin);
		    Document doc = (Document) istrm.readObject();
		    if(getEditor().getDocument() != null)
			getEditor().getDocument().removeUndoableEditListener
		            (undoHandler);
		    getEditor().setDocument(doc);
		    doc.addUndoableEditListener(undoHandler);
		    resetUndoManager();
		    frame.setTitle(file);
		    validate();
		} catch (IOException io) {
		    // should put in status panel
		    System.err.println("IOException: " + io.getMessage());
		} catch (ClassNotFoundException cnf) {
		    // should put in status panel
		    System.err.println("Class not found: " + cnf.getMessage());
		}
	    } else {
		// should put in status panel
		System.err.println("No such file: " + f);
	    }
	}
    }

    /**
     * Trys to write the document as a serialization.
     */
    class SaveAction extends AbstractAction {

	SaveAction() {
	    super(saveAction);
	}

        public void actionPerformed(ActionEvent e) {
	    Frame frame = getFrame();
	    if (fileDialog == null) {
		fileDialog = new FileDialog(frame);
	    }
	    fileDialog.setMode(FileDialog.SAVE);
	    fileDialog.show();
	    String file = fileDialog.getFile();
	    if (file == null) {
		return;
	    }
	    String directory = fileDialog.getDirectory();
	    File f = new File(directory, file);
	    try {
		FileOutputStream fstrm = new FileOutputStream(f);
		ObjectOutput ostrm = new ObjectOutputStream(fstrm);
		ostrm.writeObject(getEditor().getDocument());
		ostrm.flush();
                frame.setTitle(f.getName());
	    } catch (IOException io) {
		// should put in status panel
		System.err.println("IOException: " + io.getMessage());
	    }
	}
    }

    /**
     * Creates an empty document.
     */
    class NewAction extends AbstractAction {

	NewAction() {
	    super(newAction);
	}

        public void actionPerformed(ActionEvent e) {
	    if(getEditor().getDocument() != null)
		getEditor().getDocument().removeUndoableEditListener
		            (undoHandler);
	    getEditor().setDocument(new DefaultStyledDocument());
	    getEditor().getDocument().addUndoableEditListener(undoHandler);
	    resetUndoManager();
            getFrame().setTitle(resources.getString("Title"));
	    validate();
	}
    }

    class ColoredSquare implements Icon {
	Color color;
	public ColoredSquare(Color c) {
	    this.color = c;
	}

	public void paintIcon(Component c, Graphics g, int x, int y) {
	    Color oldColor = g.getColor();
	    g.setColor(color);
	    g.fill3DRect(x,y,getIconWidth(), getIconHeight(), true);
	    g.setColor(oldColor);
	}
	public int getIconWidth() { return 12; }
	public int getIconHeight() { return 12; }

    }
}