/* * Swing Version */import javax.swing.*;import javax.swing.text.*;import java.awt.*;              //for layout managersimport java.awt.event.*;        //for action and window eventsimport java.net.URL;import java.io.IOException;public class TextSamplerDemo extends JFrame                             implements ActionListener {    private String newline = "\n";    protected static final String textFieldString = "JTextField";    protected static final String passwordFieldString = "JPasswordField";    protected JLabel actionLabel;    public TextSamplerDemo() {        super("TextSamplerDemo");        //Create a regular text field.        JTextField textField = new JTextField(10);        textField.setActionCommand(textFieldString);        textField.addActionListener(this);        //Create a password field.        JPasswordField passwordField = new JPasswordField(10);        passwordField.setActionCommand(passwordFieldString);        passwordField.addActionListener(this);        //Create some labels for the fields.        JLabel textFieldLabel = new JLabel(textFieldString + ": ");        textFieldLabel.setLabelFor(textField);        JLabel passwordFieldLabel = new JLabel(passwordFieldString + ": ");        passwordFieldLabel.setLabelFor(passwordField);        //Create a label to put messages during an action event.        actionLabel = new JLabel("Type text and then Return in a field.");	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, passwordFieldLabel};        JTextField[] textFields = {textField, passwordField};        addLabelTextRows(labels, textFields, gridbag, textControlsPane);        c.gridwidth = GridBagConstraints.REMAINDER; //last        c.anchor = GridBagConstraints.WEST;        c.weightx = 1.0;        gridbag.setConstraints(actionLabel, c);        textControlsPane.add(actionLabel);        textControlsPane.setBorder(                BorderFactory.createCompoundBorder(                                BorderFactory.createTitledBorder("Text Fields"),                                BorderFactory.createEmptyBorder(5,5,5,5)));        //Create a text area.        JTextArea textArea = new JTextArea(                "This is an editable JTextArea " +                "that has been initialized with the setText method. " +                "A text area is a \"plain\" text component, " +                "which means that although it can display text " +                "in any font, all of the text is in the same font."        );        textArea.setFont(new Font("Serif", Font.ITALIC, 16));        textArea.setLineWrap(true);        textArea.setWrapStyleWord(true);        JScrollPane areaScrollPane = new JScrollPane(textArea);        areaScrollPane.setVerticalScrollBarPolicy(                        JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);        areaScrollPane.setPreferredSize(new Dimension(250, 250));        areaScrollPane.setBorder(            BorderFactory.createCompoundBorder(                BorderFactory.createCompoundBorder(                                BorderFactory.createTitledBorder("Plain Text"),                                BorderFactory.createEmptyBorder(5,5,5,5)),                areaScrollPane.getBorder()));        //Create an editor pane.        JEditorPane editorPane = createEditorPane();        JScrollPane editorScrollPane = new JScrollPane(editorPane);        editorScrollPane.setVerticalScrollBarPolicy(                        JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);        editorScrollPane.setPreferredSize(new Dimension(250, 145));        editorScrollPane.setMinimumSize(new Dimension(10, 10));        //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,                                              editorScrollPane,                                              paneScrollPane);        splitPane.setOneTouchExpandable(true);        JPanel rightPane = new JPanel();        rightPane.add(splitPane);        rightPane.setBorder(BorderFactory.createCompoundBorder(                        BorderFactory.createTitledBorder("Styled Text"),                        BorderFactory.createEmptyBorder(5,5,5,5)));        //Put everything in the applet.        JPanel leftPane = new JPanel();        BoxLayout leftBox = new BoxLayout(leftPane, BoxLayout.Y_AXIS);        leftPane.setLayout(leftBox);        leftPane.add(textControlsPane);        leftPane.add(areaScrollPane);        JPanel contentPane = new JPanel();        BoxLayout box = new BoxLayout(contentPane, BoxLayout.X_AXIS);        contentPane.setLayout(box);        contentPane.add(leftPane);        contentPane.add(rightPane);        setContentPane(contentPane);    }    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            gridbag.setConstraints(labels[i], c);            container.add(labels[i]);            c.gridwidth = GridBagConstraints.REMAINDER;     //end row            c.fill = GridBagConstraints.HORIZONTAL;            c.weightx = 1.0;            gridbag.setConstraints(textFields[i], c);            container.add(textFields[i]);        }    }    public void actionPerformed(ActionEvent e) {        String prefix = "You typed \"";        if (e.getActionCommand().equals(textFieldString)) {            JTextField source = (JTextField)e.getSource();            actionLabel.setText(prefix + source.getText() + "\"");        } else {            JPasswordField source = (JPasswordField)e.getSource();            actionLabel.setText(prefix + new String(source.getPassword())                                + "\"");        }    }    private JEditorPane createEditorPane() {        JEditorPane editorPane = new JEditorPane();        editorPane.setEditable(false);        String s = null;        try {            s = "file:"                + System.getProperty("user.dir")                + System.getProperty("file.separator")                + "TextSamplerDemoHelp.html";            URL helpURL = new URL(s);            displayURL(helpURL, editorPane);        } catch (Exception e) {            System.err.println("Couldn't create help URL: " + s);        }        return editorPane;    }    private void displayURL(URL url, JEditorPane editorPane) {        try {            editorPane.setPage(url);        } catch (IOException e) {            System.err.println("Attempted to read a bad URL: " + url);        }    }    private JTextPane createTextPane() {        JTextPane textPane = new JTextPane();        String[] initString =                { "This is an editable JTextPane, ",		//regular                  "another ",					//italic                  "styled ",					//bold                  "text ",					//small                  "component, ",				//large                  "which supports embedded components..." + newline,//regular                  " " + newline,				//button                  "...and embedded icons..." + newline,		//regular                  " ", 						//icon                  newline + "JTextPane is a subclass of JEditorPane that " +                    "uses a StyledEditorKit and StyledDocument, and provides " +                    "cover methods for interacting with those objects."                 };        String[] initStyles =                 { "regular", "italic", "bold", "small", "large",                  "regular", "button", "regular", "icon",                  "regular"                };        initStylesForTextPane(textPane);        Document doc = textPane.getDocument();        try {            for (int i=0; i < initString.length; i++) {                doc.insertString(doc.getLength(), initString[i],                                 textPane.getStyle(initStyles[i]));            }        } catch (BadLocationException ble) {            System.err.println("Couldn't insert initial text.");        }        return textPane;    }    protected void initStylesForTextPane(JTextPane textPane) {        //Initialize some styles.        Style def = StyleContext.getDefaultStyleContext().                                        getStyle(StyleContext.DEFAULT_STYLE);        Style regular = textPane.addStyle("regular", def);        StyleConstants.setFontFamily(def, "SansSerif");        Style s = textPane.addStyle("italic", regular);        StyleConstants.setItalic(s, true);        s = textPane.addStyle("bold", regular);        StyleConstants.setBold(s, true);        s = textPane.addStyle("small", regular);        StyleConstants.setFontSize(s, 10);        s = textPane.addStyle("large", regular);        StyleConstants.setFontSize(s, 16);        s = textPane.addStyle("icon", regular);        StyleConstants.setAlignment(s, StyleConstants.ALIGN_CENTER);        StyleConstants.setIcon(s, new ImageIcon("images/Pig.gif"));        s = textPane.addStyle("button", regular);        StyleConstants.setAlignment(s, StyleConstants.ALIGN_CENTER);        JButton button = new JButton(new ImageIcon("images/sound.gif"));        button.setMargin(new Insets(0,0,0,0));        button.addActionListener(new ActionListener() {            public void actionPerformed(ActionEvent e) {                Toolkit.getDefaultToolkit().beep();            }        });        StyleConstants.setComponent(s, button);    }    public static void main(String[] args) {        JFrame frame = new TextSamplerDemo();        frame.addWindowListener(new WindowAdapter() {            public void windowClosing(WindowEvent e) {                System.exit(0);            }        });        frame.pack();        frame.setVisible(true);    }}