|
|
|
//******************************************************************************
//
// File: ExtremeEditor.java
//
//******************************************************************************
import javax.swing.JFrame;
import java.awt.Component;
import java.awt.Container;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.event.InputMethodListener;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Color;
import javax.swing.JScrollPane;
import javax.swing.text.DefaultStyledDocument;
import javax.swing.JTextPane;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JMenu;
import javax.swing.JColorChooser;
import javax.swing.text.MutableAttributeSet;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyledEditorKit;
import javax.swing.text.AttributeSet;
import javax.swing.text.StyledDocument;
import javax.swing.JFileChooser;
import javax.swing.ImageIcon;
import javax.swing.Icon;
import javax.swing.JOptionPane;
import java.util.Hashtable;
import java.io.File;
import java.io.FileReader;
import java.io.BufferedReader;
import java.io.FileWriter;
import java.io.BufferedWriter;
import edu.rit.m2mi.M2MI;
import edu.rit.m2mi.SynthesisException;
/**
* Class ExtremeEditor is the driver of the extreme editor.
* Order of execution:
* <UL>
* Initialize M2MI
* <UL>
* paring the arguments --> split the frame in two panes or not
* <UL>
* adding a HpStyledDocument to the pane
* </UL>
* <P>
* <B>M2MI Library Version October/20/2003</B>
*
* @author Hans-Peter Bischof
* @version October/20/2003
*/
public class ExtremeEditor extends JFrame {
/**
* Initialize the M2MI layer.
*/
static {
try {
M2MI.initialize(54321L);
} catch (Throwable exc) {
System.err.println ("ExtremeEditor: Uncaught exception");
exc.printStackTrace (System.err);
}
}
final protected static int WIDTH = 500; // with of the frame
final protected static int HEIGHT = 500; // height of the frame
static protected int HEIGHT_F = HEIGHT; // heigt if split
final protected static int MAX_READ = 512; // # chars read and send at once
protected JTextPane pane = null; // editor
protected JTextPane ccPane = null; // carbon copy editor
protected Hashtable aHashTable = new Hashtable(); // for colors
protected JMenuBar menueBar = new JMenuBar(); // menue bar
protected Color aColor = null; // actual color
protected boolean split = false; // see parseArgs
/**
* Creates a new ExtremeEditor.
*
* @param text Will be used to set the titlebar.
*
*/
public ExtremeEditor(String text ) {
super(text);
}
/**
* Returns the current used foreground color
*
* @return the current used foreground color
*/
public Color getColor() {
return aColor;
}
/**
* Allows to choose a new foreground color.
*/
public void doColorCommand() {
aColor = JColorChooser.showDialog(
this, "Color Chooser", Color.cyan);
if (aColor != null) {
MutableAttributeSet attr = new SimpleAttributeSet();
StyleConstants.setForeground(attr, aColor);
pane.setCharacterAttributes(attr, false);
}
}
/**
* Loads a new file into the current buffer.
* A modal dialog window will open if the file does not exist.
*/
public void doLoadCommand() {
JFileChooser chooser = new JFileChooser();
int status = chooser.showOpenDialog(this);
if (status == JFileChooser.APPROVE_OPTION) {
File file = chooser.getSelectedFile();
try {
HpStyledDocument doc = (HpStyledDocument)pane.getStyledDocument();
doc.removeContent();
FileReader fileInputReader = new FileReader (file);
BufferedReader bufferedReader =
new BufferedReader(fileInputReader);
char buffer[] = new char[MAX_READ];
int len;
while ((len = bufferedReader.read(buffer, 0,
buffer.length)) != -1) {
doc.insertString(doc.getLength(),
new String (buffer, 0, len), null);
}
} catch (Exception exc) {
JOptionPane.showMessageDialog(null,
"Problems with Parsing the file", "alert",
JOptionPane.ERROR_MESSAGE);
}
}
}
/**
* Saves the connent of the current buffer in a file.
* A modal dialog window will open if the file does not exist.
*/
public void doSaveCommand() {
JFileChooser chooser = new JFileChooser();
int status = chooser.showSaveDialog(this);
if (status == JFileChooser.APPROVE_OPTION) {
File file = chooser.getSelectedFile();
try {
HpStyledDocument doc = (HpStyledDocument)pane.getStyledDocument();
FileWriter fileOutputWriter = new FileWriter (file);
BufferedWriter bufferedWriter =
new BufferedWriter(fileOutputWriter);
int length = doc.getLength();
bufferedWriter.write( doc.getText(0, length) );
bufferedWriter.flush();
bufferedWriter.close();
} catch (Exception exc) {
JOptionPane.showMessageDialog(null,
"Problems with Parsing the file", "alert",
JOptionPane.ERROR_MESSAGE);
}
}
}
/**
* Creates the menue Bar
*
* @param menueBar the used menuBar
*/
private void createFileMenue(JMenuBar menueBar) {
JMenu file = new JMenu ("File");
JMenuItem item;
file.add (item = new JMenuItem ("Load"));
item.addActionListener (new ActionListener() {
public void actionPerformed (ActionEvent e) {
doLoadCommand();
}
});
file.add (item = new JMenuItem ("Save"));
item.addActionListener (new ActionListener() {
public void actionPerformed (ActionEvent e) {
doSaveCommand();
}
});
file.addSeparator();
file.add (item = new JMenuItem ("Close"));
menueBar.add (file);
item.addActionListener (new ActionListener() {
public void actionPerformed (ActionEvent e) {
System.exit(0);
}
});
}
ActionListener aActionListener =
new ActionListener() {
public void actionPerformed(ActionEvent e) {
JMenuItem o = (JMenuItem)e.getSource();
MutableAttributeSet attr = new SimpleAttributeSet();
aColor = (Color)aHashTable.get(o.getText() );
if ( aColor != null ) { // can not happen!
StyleConstants.setForeground(attr, aColor);
pane.setCharacterAttributes(attr, false);
}
}
};
/**
* Allows to pick a new foreground color.
* This color will be used for all write activities.
*
* @param label the label
* @param aColor printed in this forground color
* @return the current used foreground color
*/
private JMenuItem addColorItem(String label, Color aColor) {
JMenuItem item = new JMenuItem (label);
aHashTable.put(label, aColor);
item.setIcon (new ColorSquare(aColor));
item.addActionListener (aActionListener);
return item;
}
/**
* Creates a new Color Menue
*
* @param menueBar under this menueBar
*/
private void createColorMenue(JMenuBar menueBar) {
JMenuItem item;
JMenu color = new JMenu("Color");
color.add (addColorItem("Red", Color.red));
color.add (addColorItem("Blue", Color.blue));
color.add (addColorItem("Green", Color.green));
color.add (item = new JMenuItem ("Custom Color"));
item.addActionListener (new ActionListener() {
public void actionPerformed (ActionEvent e) {
doColorCommand();
}
});
menueBar.add (color);
}
/**
* Creates a the the menueBar and the menues
*
*/
private void createMenues() {
JMenuBar menueBar = new JMenuBar();
setJMenuBar (menueBar);
createFileMenue(menueBar);
createColorMenue(menueBar);
}
/**
* Creates all the visible elements
* Two HpStyledDocument will appear in the frame if -split
* is an argument. This is more for testing purpose.
*/
private Component createFrameComponents() {
Container aContainerPane = getContentPane();
pane = new JTextPane( ( new HpStyledDocument(this)).export());
JScrollPane sp = new JScrollPane (pane);
if ( split ) {
ccPane = new JTextPane( ( new HpStyledDocument(this)).export());
HEIGHT_F = (int)( HEIGHT * 1.2);
sp.setPreferredSize( new Dimension(WIDTH, HEIGHT / 2 ) );
JScrollPane ccSp = new JScrollPane (ccPane);
ccSp.setPreferredSize( new Dimension(WIDTH, HEIGHT / 2 ) );
aContainerPane.add(ccSp, BorderLayout.SOUTH);
} else
sp.setPreferredSize( new Dimension(WIDTH, HEIGHT ) );
aContainerPane.add(sp, BorderLayout.NORTH);
return aContainerPane;
}
/**
* Print the usage message and terminates.
*/
private void printMessage() {
System.out.println("-h ----> help");
System.out.println("[-split] ----> split the screen");
System.exit(0);
}
/**
* Parse the commandlind arguments and sets variables.
* The program terminates, it the argumets include -h or
* if one argument can not be recognized.
*/
public void parseArgs(String args[]) {
for (int i = 0; i < args.length; i ++) {
if (args[i].equals("-h"))
printMessage();
else if (args[i].equals("-split")) {
split = true;
} else
printMessage();
}
}
/**
* Main program
*/
public static void main(String[] args) {
ExtremeEditor app = new ExtremeEditor("ExtremeEditor");
app.parseArgs(args);
Component contents = app.createFrameComponents();
app.createMenues();
app.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
app.setSize(WIDTH, HEIGHT_F);
app.setVisible(true);
}
}
Source Code: Src/13e/ExtremeEditor.java
|
|
|
Created by
unroff,
java2html &
& hp-tools.
© by csfac. All Rights Reserved (2010).
It is not allowed to print these pages on a CAST printer.
Last modified: 01/April/10 (17:16)