CODEWITHSUNDEEP
javahtmlswing
Roberto Fernández Iglesias
Roberto Fernández Iglesias

Reputation: 61

JEditorPane content type "text/html" line breaks with no paragraph creation

When I create a JEditorPane with setContentType("text/html") and I press enter editing text, a new html paragraph (<p style="margin-top: 0">) is created. Is there any way to insert line break tags (<br>) instead of that?

Here is the example:

import javax.swing.*;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

public class Test {

    public static void main(String[] args) {
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setLocationRelativeTo(null);
        frame.setTitle("Text Area");

        JEditorPane editor = new JEditorPane();
        editor.setContentType("text/html");

        Box pane = Box.createVerticalBox();

        pane.add(editor);
        frame.add(pane);

        frame.setSize(500, 500);

        frame.addWindowListener(new WindowAdapter()
        {
            @Override
            public void windowClosing(WindowEvent e)
            {
                System.out.println(editor.getText());
                e.getWindow().dispose();
            }
        });

        frame.setVisible(true);
    }
}

This is the outpup of a written text:

<html>
  <head>

  </head>
  <body>
    <p style="margin-top: 0">
      First line
    </p>
    <p style="margin-top: 0">
      This is a new line
    </p>
  </body>
</html>

And this is what I would like to have:

<html>
  <head>

  </head>
  <body>
    <p style="margin-top: 0">
      First line<br>
      This is a new line
    </p>
  </body>
</html>

Upvotes: 1

Views: 494

Answers (1)

Roberto Fern&#225;ndez Iglesias
Roberto Fern&#225;ndez Iglesias

Reputation: 61

I could solve it creating a new action for Shift + Enter key combination:

private static final String NEW_LINE = "new-line";

private static void initializeEditorPane(JEditorPane textArea) {
    HTMLEditorKit kit = new HTMLEditorKit();
    textArea.setEditorKit(kit);

    InputMap input = textArea.getInputMap();
    KeyStroke shiftEnter = KeyStroke.getKeyStroke("shift ENTER");
    input.put(shiftEnter, NEW_LINE);

    ActionMap actions = textArea.getActionMap();
    actions.put(NEW_LINE, new AbstractAction() {
        @Override
        public void actionPerformed(ActionEvent e) {
            try {
                kit.insertHTML((HTMLDocument)textArea.getDocument(), textArea.getCaretPosition(),
                        "<br>", 0,0, HTML.Tag.BR);
                textArea.setCaretPosition(textArea.getCaretPosition()); // This moves caret to next line
            } catch (BadLocationException | IOException ex) {
                ex.printStackTrace();
            }
        }
    });
}

Upvotes: 2

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