JTextPane格式化

Question

我有一个JTextPane,我想添加行,根据他们的内容,他们有不同的格式.

目前我有这个

StyleContext context = new StyleContext();
StyledDocument document = new DefaultStyledDocument(context);

Style styleBold = context.getStyle(StyleContext.DEFAULT_STYLE);
StyleConstants.setBold(styleBold, true);
StyleConstants.setFontSize(styleBold, 18);

Style styleNorm = context.getStyle(StyleContext.DEFAULT_STYLE);
StyleConstants.setFontSize(styleNorm, 15);

for (int i = 0; i < temp.size(); i++) {
    String tmp = temp.get(i);
    if (tmp.substring(0, 2).equals(COMMENT_PREFIX)) {
        String addThis = " - " + tmp.substring(2);

        try {
            document.insertString(document.getLength(), addThis,
                    styleNorm);
        } //CATCH
    } else if (tmp.substring(0, 2).equals(VERSION_PREFIX)) {
        Date d = new Date(System.currentTimeMillis());
        String addThis = "Version: " + tmp.substring(2) + " - "
                + d.toString();
        try {
            document.insertString(document.getLength(), addThis,
                    styleBold);
        } //CATCH
    }
    try {
        document.insertString(document.getLength(), "\n", styleNorm);
    } //CATCH
}

我拿出了catch语句来减少代码大小.

但是,这会将我的整个文本格式化为styleNorm.这是因为它是最后一次调用Style它们会相互覆盖吗？如果是这样,我该如何解决这个问题？

Answer 1

也看到了这里,TextComponentDemo说明了如何应用一些StyleConstants,包括字体大小,样式,对齐和颜色.这些样式可以直接应用于Document,如图所示initAttributes(),或通过此处StyledEditorKit看到的动作.

附录:下面的示例使用创建三个相关样式SimpleAttributeSet.请注意,highAlert更改颜色但保留从中继承的粗体属性boldBlue.

import java.awt.Color;
import java.awt.EventQueue;
import java.util.Date;
import javax.swing.JFrame;
import javax.swing.JTextPane;
import javax.swing.text.BadLocationException;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyledDocument;

/**
 * @see https://stackoverflow.com/a/15600689/230513
 */
public class Test {

    private void display() throws BadLocationException {
        JFrame f = new JFrame("Test");
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        String s = new Date().toString();
        JTextPane jtp = new JTextPane();
        StyledDocument doc = (StyledDocument) jtp.getDocument();

        SimpleAttributeSet normal = new SimpleAttributeSet();
        StyleConstants.setFontFamily(normal, "SansSerif");
        StyleConstants.setFontSize(normal, 16);

        SimpleAttributeSet boldBlue = new SimpleAttributeSet(normal);
        StyleConstants.setBold(boldBlue, true);
        StyleConstants.setForeground(boldBlue, Color.blue);

        SimpleAttributeSet highAlert = new SimpleAttributeSet(boldBlue);
        StyleConstants.setFontSize(highAlert, 18);
        StyleConstants.setItalic(highAlert, true);
        StyleConstants.setForeground(highAlert, Color.red);

        doc.insertString(doc.getLength(), s + "\n", normal);
        doc.insertString(doc.getLength(), s + "\n", boldBlue);
        doc.insertString(doc.getLength(), s + "\n", highAlert);
        f.add(jtp);
        f.pack();
        f.setLocationRelativeTo(null);
        f.setVisible(true);
    }

    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    new Test().display();
                } catch (BadLocationException ex) {
                    ex.printStackTrace(System.err);
                }
            }
        });
    }
}