Question

When I open up my file in my text editor. I am only getting the file’s location in the text pane. Am I making a simple mistake somewhere or is there a better way to do this? Should I use an ArrayList to store the images locations?

Example of what is happening: I have a file that has two lines…

---

C:\…\pic.png
(picture description)

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When I try to open up the file (after I save it in the text editor) it shows the actual location of the picture. I want to be able to use BufferedImage to get the directory and add the image to the JTextPane. Otherwise (if the text isn’t a location), simply add the text to the text pane.

FYI: textArea is of type JTextPane

Code that opens my file

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// sb is my StringBuffer

try
{
    b = new BufferedReader(new FileReader(filename));
    String line;

    while((line=b.readLine())!=null)
    {
        if (line.contains("C:\\...\\Pictures\\"))
        {
            BufferedImage image = ImageIO.read(new File(line));
            ImageIcon selectedPicture = new ImageIcon(image);
            textArea.insertIcon(selectedPicture);
        }

        sb.append(line + "\n");
        textArea.setText(sb.toString());
    }

    b.close();
}

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If you have any questions about this code or need clarification, don’t hesitate to ask.

Answer 1

OK. The way you are setting content on to the JTextPane is incorrect.
The basic trick is to get StyleDocument out of the JTextPane and then set a Style on the document. A style basically explains how the component needs to be rendered. For example, text formatting, image icons, spacing etc.

Given that following code will get you started.

    JTextPane textPane = new JTextPane();
    try {
        BufferedReader b = new BufferedReader(
                new FileReader("inputfile.txt"));
        String line;
        StyledDocument doc = (StyledDocument) textPane.getDocument();

        while ((line = b.readLine()) != null) {

            if (line.contains("/home/user/pictures")) {
                Style style = doc.addStyle("StyleName", null);
                StyleConstants.setIcon(style, new ImageIcon(line));
                doc.insertString(doc.getLength(), "ignore", style);

            } else {
                Style textStyle = doc.addStyle("StyleName", null);
                //work on textStyle object to get required color/formatting.
                doc.insertString(doc.getLength(), "\n" + line, textStyle);
            }
        }

        b.close();
    } catch (Exception e) {
        e.printStackTrace();
    }