Java refresh/update JTextPane

It's a bit long

Actually it's not that it isn't working, it is I don;t know the best way to do it.

package trunk.textConversation;

import javax.swing.*;

import javax.swing.text.*;

import java.awt.*; //for layout managers and more

import java.awt.event.*;//for action events

public class Textconversation extends JPanel implements ActionListener {

/**

*

*/

//The name of the user

public static String name = "Guest";

//The message of the user

public static String message;

//The text to output

public static String[] initString;

//The style the text will be in

public static String[] initStyles = {"regular"};

public static JFrame frame;

private static final long serialVersionUID = 1;

//private String newline = "\n";

protected static final String textFieldString = "JTextField";

protected static final String buttonString = "JButton";

protected JLabel actionLabel;

public Textconversation() {

setLayout(new BorderLayout());

//Create a regular text field.

JTextField textField = new JTextField(10);

textField.setActionCommand(textFieldString);

textField.addActionListener(this);

//Create some labels for the fields.

JLabel textFieldLabel = new JLabel();

textFieldLabel.setLabelFor(textField);

//Create a label to put messages during an action event.

actionLabel = new JLabel("Type text in a field and press Enter.");

actionLabel.setBorder(BorderFactory.createEmptyBorder(10,0,0,0));

//Lay out the text controls and the labels.

JPanel textControlsPane = new JPanel();

GridBagLayout gridbag = new GridBagLayout();

GridBagConstraints c = new GridBagConstraints();

textControlsPane.setLayout(gridbag);

JLabel[] labels = {textFieldLabel};

JTextField[] textFields = {textField};

addLabelTextRows(labels, textFields, gridbag, textControlsPane);

c.gridwidth = GridBagConstraints.REMAINDER; //last

c.anchor = GridBagConstraints.WEST;

c.weightx = 1.0;

textControlsPane.add(actionLabel, c);

textControlsPane.setBorder(

BorderFactory.createCompoundBorder(

BorderFactory.createTitledBorder("Text Fields"),

BorderFactory.createEmptyBorder(5,5,5,5)));

//Create a text pane.

JTextPane textPane = createTextPane();

JScrollPane paneScrollPane = new JScrollPane(textPane);

paneScrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);

paneScrollPane.setPreferredSize(new Dimension(250, 155));

paneScrollPane.setMinimumSize(new Dimension(10, 10));

//Put the editor pane and the text pane in a split pane.

JSplitPane splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT,

paneScrollPane,

textControlsPane);

splitPane.setOneTouchExpandable(true);

splitPane.setResizeWeight(0.5);

JPanel rightPane = new JPanel(new GridLayout(1,0));

rightPane.add(splitPane);

rightPane.setBorder(BorderFactory.createCompoundBorder(

BorderFactory.createTitledBorder("Styled Text"),

BorderFactory.createEmptyBorder(5,5,5,5)));

//Put everything together.

JPanel leftPane = new JPanel(new BorderLayout());

add(leftPane, BorderLayout.LINE_START);

add(rightPane, BorderLayout.LINE_END);

}

private void addLabelTextRows(JLabel[] labels, JTextField[] textFields, GridBagLayout gridbag, Container container) {

GridBagConstraints c = new GridBagConstraints();

c.anchor = GridBagConstraints.EAST;

int numLabels = labels.length;

for (int i = 0; i < numLabels; i++) {

c.gridwidth = GridBagConstraints.RELATIVE; //next-to-last

c.fill = GridBagConstraints.NONE;//reset to default

c.weightx = 0.0;//reset to default

container.add(labels[i], c);

c.gridwidth = GridBagConstraints.REMAINDER;//end row

c.fill = GridBagConstraints.HORIZONTAL;

c.weightx = 1.0;

container.add(textFields[i], c);

}

}

public static void textOutput() {

Xmlreader.readElement();

initString = new String[Xmlreader.conversation.length];

for (int s = 0; s < Xmlreader.conversation.length; s++) {

initString[s] = Xmlreader.conversation[s] + "\n";

}

}

public void actionPerformed(ActionEvent e) {

//After user clicked enter

String prefix = "You typed \"";

if (textFieldString.equals(e.getActionCommand())) {

JTextField source = (JTextField)e.getSource();

actionLabel.setText(prefix + source.getText() + "\"");

message = source.getText();

Xmlreader.addElement();

} else if (buttonString.equals(e.getActionCommand())) {

Toolkit.getDefaultToolkit().beep();

}

}

public JTextPane createTextPane() {

textOutput();

JTextPane textPane = new JTextPane();

textPane.setEditable(false);

StyledDocument doc = textPane.getStyledDocument();

addStylesToDocument(doc);

try {

for (int i=0; i < initString.length; i++) {

doc.insertString(doc.getLength(), initString[i],

doc.getStyle(initStyles[0]));

}

} catch (BadLocationException ble) {

System.err.println("Couldn't insert initial text into text pane.");

}

return textPane;

}

protected void addStylesToDocument(StyledDocument doc) {

//Initialize some styles.

Style def = StyleContext.getDefaultStyleContext().

getStyle(StyleContext.DEFAULT_STYLE);

Style regular = doc.addStyle("regular", def);

StyleConstants.setFontFamily(def, "SansSerif");

Style s = doc.addStyle("italic", regular);

StyleConstants.setItalic(s, true);

s = doc.addStyle("bold", regular);

StyleConstants.setBold(s, true);

s = doc.addStyle("small", regular);

StyleConstants.setFontSize(s, 10);

s = doc.addStyle("large", regular);

StyleConstants.setFontSize(s, 16);

s = doc.addStyle("icon", regular);

StyleConstants.setAlignment(s, StyleConstants.ALIGN_CENTER);

ImageIcon pigIcon = createImageIcon("", "");

if (pigIcon != null) {

StyleConstants.setIcon(s, pigIcon);

}

s = doc.addStyle("button", regular);

StyleConstants.setAlignment(s, StyleConstants.ALIGN_CENTER);

ImageIcon soundIcon = createImageIcon("", "");

JButton button = new JButton();

if (soundIcon != null) {

button.setIcon(soundIcon);

} else {

button.setText("BEEP");

}

button.setCursor(Cursor.getDefaultCursor());

button.setMargin(new Insets(0,0,0,0));

button.setActionCommand(buttonString);

button.addActionListener(this);

StyleConstants.setComponent(s, button);

}

/** Returns an ImageIcon, or null if the path was invalid. */

protected static ImageIcon createImageIcon(String path,

String description) {

java.net.URL imgURL = Textconversation.class.getResource(path);

if (imgURL != null) {

return new ImageIcon(imgURL, description);

} else {

System.err.println("Couldn't find file: " + path);

return null;

}

}

/**

* Create the GUI and show it. For thread safety,

* this method should be invoked from the

* event dispatch thread.

*/

private static void createAndShowGUI() {

//Create and set up the window.

frame = new JFrame("Conversation");

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

//Add content to the window.

frame.add(new Textconversation());

//Display the window.

frame.pack();

frame.setVisible(true);

}

public static void main(String[] args) {

//Schedule a job for the event dispatching thread:

//creating and showing this application's GUI.

SwingUtilities.invokeLater(new Runnable() {

public void run() {

//Turn off metal's use of bold fonts

UIManager.put("swing.boldMetal", Boolean.FALSE);

createAndShowGUI();

}

});

}

}

Message was edited by:

Dennis56

Dennis56a at 2007-7-12 22:08:39 >