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WYSIWYG Html Editor with JEditorPane and HTMLEditorKit

35 replies on 3 pages. Most recent reply: May 7, 2012 5:29 AM by Joe Ridener

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Janosch Felde

Posts: 2
Nickname: speedqueen
Registered: Jun, 2002

WYSIWYG Html Editor with JEditorPane and HTMLEditorKit Posted: Jun 27, 2002 3:55 AM
Reply to this message Reply
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Hi everyone !

I found my way here due to a topic from DEC.2002, concerning a HTML WYSIWYG Editor using a JEditorPane and the HTMLEditorKit.
I'm working on a project for University, with my part being to help out the emial Staff of our Project with their "new-mail" window being able to write basic HTML(i.e. bold, italic, div align right, left center).

However I encountered serval Problems as: Where to put the editor kit, what about the documenttype, how are positions between selection on the pane reffered to the sourcecode...
I would ask for some help on how to design this smal editor, or even better some source code where I could see how it can be done.

So if someone would be able to tell where I may find a code resource, or could give a walkthrough on an editor like this, I would be really happy...

Thanks a lot

Janosch a.k.a Speedqueen

PS: I found an explanation at http://www.mokabyte.com/1999/12/htmleditor.htm however its in spanish (or is it Italian ?) so sadly it doesen't help me...


Charles Bell

Posts: 519
Nickname: charles
Registered: Feb, 2002

Re: WYSIWYG Html Editor with JEditorPane and HTMLEditorKit Posted: Jun 29, 2002 3:56 PM
Reply to this message Reply

/* HTMLDocumentEditor.java
* @author: Charles Bell
* @version: May 27, 2002
*/

import java.awt.*;
import java.awt.event.*;
import java.io.*;

import javax.swing.*;
import javax.swing.event.*;
import javax.swing.filechooser.*;
import javax.swing.text.*;
import javax.swing.text.html.*;
import javax.swing.undo.*;


public class HTMLDocumentEditor extends JFrame implements ActionListener{

private HTMLDocument document;
private JTextPane textPane = new JTextPane();
private boolean debug = false;
private File currentFile;

/** Listener for the edits on the current document. */
protected UndoableEditListener undoHandler = new UndoHandler();

/** UndoManager that we add edits to. */
protected UndoManager undo = new UndoManager();

private UndoAction undoAction = new UndoAction();
private RedoAction redoAction = new RedoAction();

private Action cutAction = new DefaultEditorKit.CutAction();
private Action copyAction = new DefaultEditorKit.CopyAction();
private Action pasteAction = new DefaultEditorKit.PasteAction();

private Action boldAction = new StyledEditorKit.BoldAction();
private Action underlineAction = new StyledEditorKit.UnderlineAction();
private Action italicAction = new StyledEditorKit.ItalicAction();

private Action insertBreakAction = new DefaultEditorKit.InsertBreakAction();
private HTMLEditorKit.InsertHTMLTextAction unorderedListAction
= new HTMLEditorKit.InsertHTMLTextAction("Bullets", "<ul><li> </li></ul>",HTML.Tag.P,HTML.Tag.UL);
private HTMLEditorKit.InsertHTMLTextAction bulletAction
= new HTMLEditorKit.InsertHTMLTextAction("Bullets", "<li> </li>",HTML.Tag.UL,HTML.Tag.LI);

public HTMLDocumentEditor(){
super("HTMLDocumentEditor");
HTMLEditorKit editorKit = new HTMLEditorKit();
document = (HTMLDocument)editorKit.createDefaultDocument();
// Force SwingSet to come up in the Cross Platform L&F
try {
//UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
// If you want the System L&F instead, comment out the above line and
// uncomment the following:
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (Exception exc) {
System.err.println("Error loading L&F: " + exc);
}
init();
}

public static void main(String[] args){
HTMLDocumentEditor editor = new HTMLDocumentEditor();
}

public void init(){

addWindowListener(new FrameListener());

JMenuBar menuBar = new JMenuBar();
getContentPane().add(menuBar, BorderLayout.NORTH);
JMenu fileMenu = new JMenu("File");
JMenu editMenu = new JMenu("Edit");
JMenu colorMenu = new JMenu("Color");
JMenu fontMenu = new JMenu("Font");
JMenu styleMenu = new JMenu("Style");
JMenu alignMenu = new JMenu("Align");
JMenu helpMenu = new JMenu("Help");

menuBar.add(fileMenu);
menuBar.add(editMenu);
menuBar.add(colorMenu);
menuBar.add(fontMenu);
menuBar.add(styleMenu);
menuBar.add(alignMenu);
menuBar.add(helpMenu);

JMenuItem newItem = new JMenuItem("New", new ImageIcon("whatsnew-bang.gif"));
JMenuItem openItem = new JMenuItem("Open",new ImageIcon("open.gif"));
JMenuItem saveItem = new JMenuItem("Save",new ImageIcon("save.gif"));
JMenuItem saveAsItem = new JMenuItem("Save As");
JMenuItem exitItem = new JMenuItem("Exit",new ImageIcon("exit.gif"));

newItem.addActionListener(this);
openItem.addActionListener(this);
saveItem.addActionListener(this);
saveAsItem.addActionListener(this);
exitItem.addActionListener(this);

fileMenu.add(newItem);
fileMenu.add(openItem);
fileMenu.add(saveItem);
fileMenu.add(saveAsItem);
fileMenu.add(exitItem);


JMenuItem undoItem = new JMenuItem(undoAction);
JMenuItem redoItem = new JMenuItem(redoAction);
JMenuItem cutItem = new JMenuItem(cutAction);
JMenuItem copyItem = new JMenuItem(copyAction);
JMenuItem pasteItem = new JMenuItem(pasteAction);
JMenuItem clearItem = new JMenuItem("Clear");
JMenuItem selectAllItem = new JMenuItem("Select All");
JMenuItem insertBreaKItem = new JMenuItem(insertBreakAction);
JMenuItem unorderedListItem = new JMenuItem(unorderedListAction);
JMenuItem bulletItem = new JMenuItem(bulletAction);

cutItem.setText("Cut");
copyItem.setText("Copy");
pasteItem.setText("Paste");
insertBreaKItem.setText("Break");
cutItem.setIcon(new ImageIcon("cut.gif"));
copyItem.setIcon(new ImageIcon("copy.gif"));
pasteItem.setIcon(new ImageIcon("paste.gif"));
insertBreaKItem.setIcon(new ImageIcon("break.gif"));
unorderedListItem.setIcon(new ImageIcon("bullets.gif"));

clearItem.addActionListener(this);
selectAllItem.addActionListener(this);

editMenu.add(undoItem);
editMenu.add(redoItem);
editMenu.add(cutItem);
editMenu.add(copyItem);
editMenu.add(pasteItem);
editMenu.add(clearItem);
editMenu.add(selectAllItem);
editMenu.add(insertBreaKItem);
editMenu.add(unorderedListItem);
editMenu.add(bulletItem);

JMenuItem redTextItem = new JMenuItem(new StyledEditorKit.ForegroundAction("Red",Color.red));
JMenuItem orangeTextItem = new JMenuItem(new StyledEditorKit.ForegroundAction("Orange",Color.orange));
JMenuItem yellowTextItem = new JMenuItem(new StyledEditorKit.ForegroundAction("Yellow",Color.yellow));
JMenuItem greenTextItem = new JMenuItem(new StyledEditorKit.ForegroundAction("Green",Color.green));
JMenuItem blueTextItem = new JMenuItem(new StyledEditorKit.ForegroundAction("Blue",Color.blue));
JMenuItem cyanTextItem = new JMenuItem(new StyledEditorKit.ForegroundAction("Cyan",Color.cyan));
JMenuItem magentaTextItem = new JMenuItem(new StyledEditorKit.ForegroundAction("Magenta",Color.magenta));
JMenuItem blackTextItem = new JMenuItem(new StyledEditorKit.ForegroundAction("Black",Color.black));

redTextItem.setIcon(new ImageIcon("red.gif"));
orangeTextItem.setIcon(new ImageIcon("orange.gif"));
yellowTextItem.setIcon(new ImageIcon("yellow.gif"));
greenTextItem.setIcon(new ImageIcon("green.gif"));
blueTextItem.setIcon(new ImageIcon("blue.gif"));
cyanTextItem.setIcon(new ImageIcon("cyan.gif"));
magentaTextItem.setIcon(new ImageIcon("magenta.gif"));
blackTextItem.setIcon(new ImageIcon("black.gif"));

colorMenu.add(redTextItem);
colorMenu.add(orangeTextItem);
colorMenu.add(yellowTextItem);
colorMenu.add(greenTextItem);
colorMenu.add(blueTextItem);
colorMenu.add(cyanTextItem);
colorMenu.add(magentaTextItem);
colorMenu.add(blackTextItem);

JMenu fontTypeMenu = new JMenu("Font Type");
fontMenu.add(fontTypeMenu);

String[] fontTypes = {"SansSerif", "Serif", "Monospaced", "Dialog", "DialogInput"};
for (int i = 0; i < fontTypes.length;i++){
if (debug) System.out.println(fontTypes[i]);
JMenuItem nextTypeItem = new JMenuItem(fontTypes[i]);
nextTypeItem.setAction(new StyledEditorKit.FontFamilyAction(fontTypes[i], fontTypes[i]));
fontTypeMenu.add(nextTypeItem);
}

JMenu fontSizeMenu = new JMenu("Font Size");
fontMenu.add(fontSizeMenu);

int[] fontSizes = {6, 8,10,12,14, 16, 20,24, 32,36,48,72};
for (int i = 0; i < fontSizes.length;i++){
if (debug) System.out.println(fontSizes[i]);
JMenuItem nextSizeItem = new JMenuItem(String.valueOf(fontSizes[i]));
nextSizeItem.setAction(new StyledEditorKit.FontSizeAction(String.valueOf(fontSizes[i]), fontSizes[i]));
fontSizeMenu.add(nextSizeItem);
}


JMenuItem boldMenuItem = new JMenuItem(boldAction);
JMenuItem underlineMenuItem = new JMenuItem(underlineAction);
JMenuItem italicMenuItem = new JMenuItem(italicAction);

boldMenuItem.setText("Bold");
underlineMenuItem.setText("Underline");
italicMenuItem.setText("Italic");

boldMenuItem.setIcon(new ImageIcon("bold.gif"));
underlineMenuItem.setIcon(new ImageIcon("underline.gif"));
italicMenuItem.setIcon(new ImageIcon("italic.gif"));

styleMenu.add(boldMenuItem);
styleMenu.add(underlineMenuItem);
styleMenu.add(italicMenuItem);

JMenuItem subscriptMenuItem = new JMenuItem(new SubscriptAction());
JMenuItem superscriptMenuItem = new JMenuItem(new SuperscriptAction());
JMenuItem strikeThroughMenuItem = new JMenuItem(new StrikeThroughAction());

subscriptMenuItem.setText("Subscript");
superscriptMenuItem.setText("Superscript");
strikeThroughMenuItem.setText("StrikeThrough");

subscriptMenuItem.setIcon(new ImageIcon("subscript.gif"));
superscriptMenuItem.setIcon(new ImageIcon("superscript.gif"));
strikeThroughMenuItem.setIcon(new ImageIcon("strikethough.gif"));

styleMenu.add(subscriptMenuItem);
styleMenu.add(superscriptMenuItem);
styleMenu.add(strikeThroughMenuItem);

JMenuItem leftAlignMenuItem = new JMenuItem(new StyledEditorKit.AlignmentAction("Left Align",StyleConstants.ALIGN_LEFT));
JMenuItem centerMenuItem = new JMenuItem(new StyledEditorKit.AlignmentAction("Center",StyleConstants.ALIGN_CENTER));
JMenuItem rightAlignMenuItem = new JMenuItem(new StyledEditorKit.AlignmentAction ("Right Align",StyleConstants.ALIGN_RIGHT));

leftAlignMenuItem.setText("Left Align");
centerMenuItem.setText("Center");
rightAlignMenuItem.setText("Right Align");

leftAlignMenuItem.setIcon(new ImageIcon("left.gif"));
centerMenuItem.setIcon(new ImageIcon("center.gif"));
rightAlignMenuItem.setIcon(new ImageIcon("right.gif"));

alignMenu.add(leftAlignMenuItem);
alignMenu.add(centerMenuItem);
alignMenu.add(rightAlignMenuItem);

JMenuItem helpItem = new JMenuItem("Help");
helpItem.addActionListener(this);
helpMenu.add(helpItem);

JMenuItem shortcutsItem = new JMenuItem("Keyboard Shortcuts");
shortcutsItem.addActionListener(this);
helpMenu.add(shortcutsItem);

JMenuItem aboutItem = new JMenuItem("About QuantumHyperSpace");
aboutItem.addActionListener(this);
helpMenu.add(aboutItem);


JPanel editorControlPanel = new JPanel();
//editorControlPanel.setLayout(new GridLayout(3,3));
editorControlPanel.setLayout(new FlowLayout());

/* JButtons */
JButton cutButton = new JButton(cutAction);
JButton copyButton = new JButton(copyAction);
JButton pasteButton = new JButton(pasteAction);

JButton boldButton = new JButton(boldAction);
JButton underlineButton = new JButton(underlineAction);
JButton italicButton = new JButton(italicAction);


//JButton insertButton = new JButton(insertAction);
//JButton insertBreakButton = new JButton(insertBreakAction);
//JButton tabButton = new JButton(tabAction);

cutButton.setText("Cut");
copyButton.setText("Copy");
pasteButton.setText("Paste");

boldButton.setText("Bold");
underlineButton.setText("Underline");
italicButton.setText("Italic");

//insertButton.setText("Insert");
//insertBreakButton.setText("Insert Break");
//tabButton.setText("Tab");

cutButton.setIcon(new ImageIcon("cut.gif"));
copyButton.setIcon(new ImageIcon("copy.gif"));
pasteButton.setIcon(new ImageIcon("paste.gif"));

boldButton.setIcon(new ImageIcon("bold.gif"));
underlineButton.setIcon(new ImageIcon("underline.gif"));
italicButton.setIcon(new ImageIcon("italic.gif"));

editorControlPanel.add(cutButton);
editorControlPanel.add(copyButton);
editorControlPanel.add(pasteButton);

editorControlPanel.add(boldButton);
editorControlPanel.add(underlineButton);
editorControlPanel.add(italicButton);


//editorControlPanel.add(insertButton);
//editorControlPanel.add(insertBreakButton);
//editorControlPanel.add(tabButton);

JButton subscriptButton = new JButton(new SubscriptAction());
JButton superscriptButton = new JButton(new SuperscriptAction());
JButton strikeThroughButton = new JButton(new StrikeThroughAction());

subscriptButton.setIcon(new ImageIcon("subscript.gif"));
superscriptButton.setIcon(new ImageIcon("superscript.gif"));
strikeThroughButton.setIcon(new ImageIcon("strikethough.gif"));


JPanel specialPanel = new JPanel();
specialPanel.setLayout(new FlowLayout());

specialPanel.add(subscriptButton);
specialPanel.add(superscriptButton);
specialPanel.add(strikeThroughButton);

//JButton leftAlignButton = new JButton(new AlignLeftAction());
//JButton centerButton = new JButton(new CenterAction());
//JButton rightAlignButton = new JButton(new AlignRightAction());

JButton leftAlignButton = new JButton(new StyledEditorKit.AlignmentAction("Left Align",StyleConstants.ALIGN_LEFT));
JButton centerButton = new JButton(new StyledEditorKit.AlignmentAction("Center",StyleConstants.ALIGN_CENTER));
JButton rightAlignButton = new JButton(new StyledEditorKit.AlignmentAction ("Right Align",StyleConstants.ALIGN_RIGHT));
JButton colorButton = new JButton(new StyledEditorKit.AlignmentAction ("Right Align",StyleConstants.ALIGN_RIGHT));

leftAlignButton.setIcon(new ImageIcon("left.gif"));
centerButton.setIcon(new ImageIcon("center.gif"));
rightAlignButton.setIcon(new ImageIcon("right.gif"));
colorButton.setIcon(new ImageIcon("color.gif"));

leftAlignButton.setText("Left Align");
centerButton.setText("Center");
rightAlignButton.setText("Right Align");

JPanel alignPanel = new JPanel();
alignPanel.setLayout(new FlowLayout());
alignPanel.add(leftAlignButton);
alignPanel.add(centerButton);
alignPanel.add(rightAlignButton);

document.addUndoableEditListener(undoHandler);
resetUndoManager();

textPane = new JTextPane(document);
textPane.setContentType("text/html");
JScrollPane scrollPane = new JScrollPane(textPane);
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
Dimension scrollPaneSize = new Dimension(5*screenSize.width/8,5*screenSize.height/8);
scrollPane.setPreferredSize(scrollPaneSize);

JPanel toolPanel = new JPanel();
toolPanel.setLayout(new BorderLayout());
toolPanel.add(editorControlPanel, BorderLayout.NORTH);
toolPanel.add(specialPanel, BorderLayout.CENTER);
toolPanel.add(alignPanel, BorderLayout.SOUTH);
getContentPane().add(menuBar, BorderLayout.NORTH);
//getContentPane().add(toolPanel, BorderLayout.CENTER);
getContentPane().add(scrollPane, BorderLayout.SOUTH);
pack();
setLocationRelativeTo(null);
startNewDocument();
show();
}

public void actionPerformed(ActionEvent ae){
String actionCommand = ae.getActionCommand();
if (debug){
int modifier = ae.getModifiers();
long when = ae.getWhen();
String parameter = ae.paramString();
System.out.println("actionCommand: " + actionCommand);
System.out.println("modifier: " + modifier);
System.out.println("when: " + when);
System.out.println("parameter: " + parameter);
}
if (actionCommand.compareTo("New") == 0){
startNewDocument();
} else if (actionCommand.compareTo("Open") == 0){
openDocument();
} else if (actionCommand.compareTo("Save") == 0){
saveDocument();
} else if (actionCommand.compareTo("Save As") == 0){
saveDocumentAs();
} else if (actionCommand.compareTo("Exit") == 0){
exit();
} else if (actionCommand.compareTo("Clear") == 0){
clear();
} else if (actionCommand.compareTo("Select All") == 0){
selectAll();
} else if (actionCommand.compareTo("Help") == 0){
help();
} else if (actionCommand.compareTo("Keyboard Shortcuts") == 0){
showShortcuts();
} else if (actionCommand.compareTo("About QuantumHyperSpace") == 0){
aboutQuantumHyperSpace();
}
}

protected void resetUndoManager() {
undo.discardAllEdits();
undoAction.update();
redoAction.update();
}

public void startNewDocument(){
Document oldDoc = textPane.getDocument();
if(oldDoc != null)
oldDoc.removeUndoableEditListener(undoHandler);
HTMLEditorKit editorKit = new HTMLEditorKit();
document = (HTMLDocument)editorKit.createDefaultDocument();
textPane.setDocument(document);
currentFile = null;
setTitle("HTMLDocumentEditor");
textPane.getDocument().addUndoableEditListener(undoHandler);
resetUndoManager();
}

public void openDocument(){
try{
File current = new File(".");
JFileChooser chooser = new JFileChooser(current);
chooser.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
chooser.setFileFilter(new HTMLFileFilter());
int approval = chooser.showSaveDialog(this);
if (approval == JFileChooser.APPROVE_OPTION){
currentFile = chooser.getSelectedFile();
setTitle(currentFile.getName());
FileReader fr = new FileReader(currentFile);
Document oldDoc = textPane.getDocument();
if(oldDoc != null)
oldDoc.removeUndoableEditListener(undoHandler);
HTMLEditorKit editorKit = new HTMLEditorKit();
document = (HTMLDocument)editorKit.createDefaultDocument();
editorKit.read(fr,document,0);
document.addUndoableEditListener(undoHandler);
textPane.setDocument(document);
resetUndoManager();
}
}catch(BadLocationException ble){
System.err.println("BadLocationException: " + ble.getMessage());
}catch(FileNotFoundException fnfe){
System.err.println("FileNotFoundException: " + fnfe.getMessage());
}catch(IOException ioe){
System.err.println("IOException: " + ioe.getMessage());
}

}

public void saveDocument(){
if (currentFile != null){
try{
FileWriter fw = new FileWriter(currentFile);
fw.write(textPane.getText());
fw.close();
}catch(FileNotFoundException fnfe){
System.err.println("FileNotFoundException: " + fnfe.getMessage());
}catch(IOException ioe){
System.err.println("IOException: " + ioe.getMessage());
}
}else{
saveDocumentAs();
}
}

public void saveDocumentAs(){
try{
File current = new File(".");
JFileChooser chooser = new JFileChooser(current);
chooser.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
chooser.setFileFilter(new HTMLFileFilter());
int approval = chooser.showSaveDialog(this);
if (approval == JFileChooser.APPROVE_OPTION){
File newFile = chooser.getSelectedFile();
if (newFile.exists()){
String message = newFile.getAbsolutePath()
+ " already exists. \n"
+ "Do you want to replace it?";
if (JOptionPane.showConfirmDialog(this, message) == JOptionPane.YES_OPTION){
currentFile = newFile;
setTitle(currentFile.getName());
FileWriter fw = new FileWriter(currentFile);
fw.write(textPane.getText());
fw.close();
if (debug) System.out.println("Saved " + currentFile.getAbsolutePath());
}
}else{
currentFile = new File(newFile.getAbsolutePath());
setTitle(currentFile.getName());
FileWriter fw = new FileWriter(currentFile);
fw.write(textPane.getText());
fw.close();
if (debug) System.out.println("Saved " + currentFile.getAbsolutePath());
}
}
}catch(FileNotFoundException fnfe){
System.err.println("FileNotFoundException: " + fnfe.getMessage());
}catch(IOException ioe){
System.err.println("IOException: " + ioe.getMessage());
}
}

public void exit(){
String exitMessage = "Are you sure you want to exit?";
if (JOptionPane.showConfirmDialog(this, exitMessage) == JOptionPane.YES_OPTION){
System.exit(0);
}
}

public void clear(){
startNewDocument();
}

public void selectAll(){
textPane.selectAll();
}

public void help(){
JOptionPane.showMessageDialog(this,"DocumentEditor.java\n" +
"Author: Charles Bell\n" +
"Version: May 25, 2002\n" +
"http://www.quantumhyperspace.com\n" +
"QuantumHyperSpace Programming Services");
}

public void showShortcuts(){
String shortcuts = "Navigate in | Tab\n" +
"Navigate out | Ctrl+Tab\n" +
"Navigate out backwards | Shift+Ctrl+Tab\n" +
"Move up/down a line | Up/Down Arrown\n" +
"Move left/right a component or char | Left/Right Arrow\n" +
"Move up/down one vertical block | PgUp/PgDn\n" +
"Move to start/end of line | Home/End\n" +
"Move to previous/next word | Ctrl+Left/Right Arrow\n" +
"Move to start/end of data | Ctrl+Home/End\n" +
"Move left/right one block | Ctrl+PgUp/PgDn\n" +
"Select All | Ctrl+A\n" +
"Extend selection up one line | Shift+Up Arrow\n" +
"Extend selection down one line | Shift+Down Arrow\n" +
"Extend selection to beginning of line | Shift+Home\n" +
"Extend selection to end of line | Shift+End\n" +
"Extend selection to beginning of data | Ctrl+Shift+Home\n" +
"Extend selection to end of data | Ctrl+Shift+End\n" +
"Extend selection left | Shift+Right Arrow\n" +
"Extend selection right | Shift+Right Arrow\n" +
"Extend selection up one vertical block | Shift+PgUp\n" +
"Extend selection down one vertical block | Shift+PgDn\n" +
"Extend selection left one block | Ctrl+Shift+PgUp\n" +
"Extend selection right one block | Ctrl+Shift+PgDn\n" +
"Extend selection left one word | Ctrl+Shift+Left Arrow\n" +
"Extend selection right one word | Ctrl+Shift+Right Arrow\n";
JOptionPane.showMessageDialog(this,shortcuts);
}

public void aboutQuantumHyperSpace(){
JOptionPane.showMessageDialog(this,"QuantumHyperSpace Programming Services\n" +
"http://www.quantumhyperspace.com\n" +
"email: support@quantumhyperspace.com\n" +
" or \n" +
"email: charles@quantumhyperspace.com\n",
"QuantumHyperSpace",JOptionPane.INFORMATION_MESSAGE,
new ImageIcon("quantumhyperspace.gif"));
}

class FrameListener extends WindowAdapter{
public void windowClosing(WindowEvent we){
exit();
}
}

class SubscriptAction extends StyledEditorKit.StyledTextAction{

public SubscriptAction(){
super(StyleConstants.Subscript.toString());
}
public void actionPerformed(ActionEvent ae){
JEditorPane editor = getEditor(ae);
if (editor != null) {
StyledEditorKit kit = getStyledEditorKit(editor);
MutableAttributeSet attr = kit.getInputAttributes();
boolean subscript = (StyleConstants.isSubscript(attr)) ? false : true;
SimpleAttributeSet sas = new SimpleAttributeSet();
StyleConstants.setSubscript(sas, subscript);
setCharacterAttributes(editor, sas, false);
}
}
}

class SuperscriptAction extends StyledEditorKit.StyledTextAction{

public SuperscriptAction(){
super(StyleConstants.Superscript.toString());
}
public void actionPerformed(ActionEvent ae){
JEditorPane editor = getEditor(ae);
if (editor != null) {
StyledEditorKit kit = getStyledEditorKit(editor);
MutableAttributeSet attr = kit.getInputAttributes();
boolean superscript = (StyleConstants.isSuperscript(attr)) ? false : true;
SimpleAttributeSet sas = new SimpleAttributeSet();
StyleConstants.setSuperscript(sas, superscript);
setCharacterAttributes(editor, sas, false);
}
}
}

class StrikeThroughAction extends StyledEditorKit.StyledTextAction{

public StrikeThroughAction(){
super(StyleConstants.StrikeThrough.toString());
}

public void actionPerformed(ActionEvent ae){
JEditorPane editor = getEditor(ae);
if (editor != null) {
StyledEditorKit kit = getStyledEditorKit(editor);
MutableAttributeSet attr = kit.getInputAttributes();
boolean strikeThrough = (StyleConstants.isStrikeThrough(attr)) ? false : true;
SimpleAttributeSet sas = new SimpleAttributeSet();
StyleConstants.setStrikeThrough(sas, strikeThrough);
setCharacterAttributes(editor, sas, false);
}
}
}


class HTMLFileFilter extends javax.swing.filechooser.FileFilter{

public boolean accept(File f){
return ((f.isDirectory()) ||(f.getName().toLowerCase().indexOf(".htm") > 0));
}

public String getDescription(){
return "html";
}
}

class UndoHandler implements UndoableEditListener {

/**
* Messaged when the Document has created an edit, the edit is
* added to <code>undo</code>, an instance of UndoManager.
*/
public void undoableEditHappened(UndoableEditEvent e) {
undo.addEdit(e.getEdit());
undoAction.update();
redoAction.update();
}
}

class UndoAction extends AbstractAction {
public UndoAction() {
super("Undo");
setEnabled(false);
}

public void actionPerformed(ActionEvent e) {
try {
undo.undo();
} catch (CannotUndoException ex) {
System.out.println("Unable to undo: " + ex);
ex.printStackTrace();
}
update();
redoAction.update();
}

protected void update() {
if(undo.canUndo()) {
setEnabled(true);
putValue(Action.NAME, undo.getUndoPresentationName());
}else {
setEnabled(false);
putValue(Action.NAME, "Undo");
}
}
}

class RedoAction extends AbstractAction {

public RedoAction() {
super("Redo");
setEnabled(false);
}

public void actionPerformed(ActionEvent e) {
try {
undo.redo();
} catch (CannotRedoException ex) {
System.err.println("Unable to redo: " + ex);
ex.printStackTrace();
}
update();
undoAction.update();
}

protected void update() {
if(undo.canRedo()) {
setEnabled(true);
putValue(Action.NAME, undo.getRedoPresentationName());
}else {
setEnabled(false);
putValue(Action.NAME, "Redo");
}
}
}
}

Janosch Felde

Posts: 2
Nickname: speedqueen
Registered: Jun, 2002

Re: WYSIWYG Html Editor with JEditorPane and HTMLEditorKit Posted: Jul 1, 2002 11:05 AM
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Blockrocking Awesome !

Thanks for the Answer, this helps a lot !

Charles Bell

Posts: 519
Nickname: charles
Registered: Feb, 2002

Re: WYSIWYG Html Editor with JEditorPane and HTMLEditorKit Posted: Jul 1, 2002 12:20 PM
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Hey, it was nice to help.
I had been working on an html based styled editor which only used a portion of the code from this program. I think there are many more editor functions which could be added. If you did not see a feature you needed, perhaps I have it on some other code.
If I can help let me know.
Charles
email: charbell@bellsouth.net

Charles Bell

Posts: 519
Nickname: charles
Registered: Feb, 2002

Re: WYSIWYG Html Editor with JEditorPane and HTMLEditorKit Posted: Jul 2, 2002 3:11 PM
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The source code can be found at:
http://www.quantumhyperspace.com/SourceBank/HTMLDocumentEditor.java

Sue Evans

Posts: 1
Nickname: spolyson
Registered: Jul, 2002

Re: WYSIWYG Html Editor with JEditorPane and HTMLEditorKit Posted: Jul 29, 2002 2:30 PM
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Hello,
I'm working on a similar type of html editor and am having trouble figuring out how to allow someone to add a hypertext link into the text of the editor. Any thoughts on this?

Thanks in advance for any help.

- Sue
spolyson@vcu.edu

Paul

Posts: 10
Nickname: tb303
Registered: Aug, 2002

Re: WYSIWYG Html Editor with JEditorPane and HTMLEditorKit Posted: Aug 5, 2002 12:35 PM
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Hi there, I'm doing a similar kind of project but can't insert a non-breaking-space into the document properly

The code im using is

void nonBreakingItem_actionPerformed(ActionEvent a) {

HTMLEditorKit kit= (HTMLEditorKit)editor.getEditorKit();
Document doc = editor.getDocument();
StringReader sr = new StringReader("&amp;nbsp;");
try {
kit.read(sr,doc,editor.getCaretPosition());
}
catch(Exception e){
System.exit(1);
}
}

The problem with this is that it creates a new paragraph an places the &amp;nbsp; into it and what i really want is to insert an &amp;nbsp; into the text at the cursor position...

Can anyone help?

Thanks

Paul

Eric Low

Posts: 1
Nickname: greenhare
Registered: Aug, 2002

Re: WYSIWYG Html Editor with JEditorPane and HTMLEditorKit Posted: Aug 6, 2002 3:41 AM
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I have had the same problem, just can't find a direct solution for that. However, I have use a workaround, ie insert a space-equivalent Unicode:

inputTextPane.replaceSelection("\u00A0");


Hope this helps!

Paul

Posts: 10
Nickname: tb303
Registered: Aug, 2002

Re: WYSIWYG Html Editor with JEditorPane and HTMLEditorKit Posted: Aug 6, 2002 4:54 AM
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Thanks Eric thats cool.

Paul

Paul

Posts: 10
Nickname: tb303
Registered: Aug, 2002

Re: WYSIWYG Html Editor with JEditorPane and HTMLEditorKit Posted: Aug 28, 2002 8:05 AM
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Sorry to drag this old chestnut up again but.....

I can't seem to insert html using kit.insertHTML without it automatically inserting a new Paragraph.

I want to insert a link into the page at the carret position - the link however appears on a new line where as i need it to appear on the same line.

example:

I would like the link to appear link this
blah blah <link> blah

however it appears like

blah blah
<link>
blah


Any help would be greatly appreciated

kannan

Posts: 1
Nickname: kannan
Registered: Sep, 2002

Re: WYSIWYG Html Editor with JEditorPane and HTMLEditorKit Posted: Sep 3, 2002 3:44 AM
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Hello Mr.Charles Bell,

Thanks for HTMLDocumentEditor, In that, can u pls tell me how to copy the text with the formatting?
That is if I copy any Text from the Editor, and paste the text, this is displaying without formatting?
-Kannan

Paul

Posts: 10
Nickname: tb303
Registered: Aug, 2002

Re: WYSIWYG Html Editor with JEditorPane and HTMLEditorKit Posted: Sep 3, 2002 9:20 AM
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Found a fix for this, if the html isn't in a paragraph tag it doesn't insert the new paragraph - (more of a hack than a fix really). It does mean that paragraphs have to stripped out of the text

does any know of a book which explains this component in depth - including parsing the document etc with clear examples??

> Sorry to drag this old chestnut up again but.....
>
> I can't seem to insert html using kit.insertHTML
> without it automatically inserting a new Paragraph.
>
> I want to insert a link into the page at the carret
> position - the link however appears on a new line
> where as i need it to appear on the same line.
>
> example:
>
> I would like the link to appear link this
> blah blah <link> blah
>
> however it appears like
>
> blah blah
> <link>
> blah
>
>
> Any help would be greatly appreciated

greg

Posts: 6
Nickname: sputnik
Registered: Sep, 2002

Re: WYSIWYG Html Editor with JEditorPane and HTMLEditorKit Posted: Sep 5, 2002 9:59 AM
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don't know of any books (tho i'd be interested to read any that are found!).

with regards inserting a link (using .insertHTML) how did you have it when it was creating paragraph breaks?

i use the .insertHTML method a lot and haven't suffered that problem:


theEditorKit.insertHTML(theDocument,offset,theHTML,0,0,HTML.Tag.A);

where theHTML is the actual a href tag as a String.

as i said this has worked for me for sometime without having to extract all the paragraph tags.

> Found a fix for this, if the html isn't in a
> paragraph tag it doesn't insert the new paragraph -
> (more of a hack than a fix really). It does mean that
> paragraphs have to stripped out of the text
>
> does any know of a book which explains this component
> in depth - including parsing the document etc with
> clear examples??

RameshKUmar

Posts: 1
Nickname: javaramesh
Registered: Sep, 2002

Re: WYSIWYG Html Editor with JEditorPane and HTMLEditorKit Posted: Sep 11, 2002 10:45 AM
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hi..

I created one word document and i saved as webpage(html). and when i try to open this html in HTMLDocumentEditor , it gives IOEXception.. IS this because this html uses styles. Could anyone help me in this issue.. i need it badly..

regards
Ramesh Kumar

Paul

Posts: 10
Nickname: tb303
Registered: Aug, 2002

Re: WYSIWYG Html Editor with JEditorPane and HTMLEditorKit Posted: Sep 11, 2002 11:07 AM
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This could be because of the shite that M$HTML produces - its hardly well formed - get hold of Tidy www.w3.org/People/Raggett/tidy/ and run the doc through that - using the "clean up word 2000" flag and try loading in the saved document - that might help

Paul

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