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package javax.swing.text.html;

import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.net.MalformedURLException;
import java.net.URL;
import javax.swing.text.*;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.event.*;
import java.util.*;

CommentView subclasses HiddenTagView to contain a JTextArea showing a comment. When the textarea is edited the comment is reset. As this inherits from EditableView if the JTextComponent is not editable, the textarea will not be visible.
Author: Scott Violet
/** * CommentView subclasses HiddenTagView to contain a JTextArea showing * a comment. When the textarea is edited the comment is * reset. As this inherits from EditableView if the JTextComponent is * not editable, the textarea will not be visible. * * @author Scott Violet */
class CommentView extends HiddenTagView { CommentView(Element e) { super(e); } protected Component createComponent() { Container host = getContainer(); if (host != null && !((JTextComponent)host).isEditable()) { return null; } JTextArea ta = new JTextArea(getRepresentedText()); Document doc = getDocument(); Font font; if (doc instanceof StyledDocument) { font = ((StyledDocument)doc).getFont(getAttributes()); ta.setFont(font); } else { font = ta.getFont(); } updateYAlign(font); ta.setBorder(CBorder); ta.getDocument().addDocumentListener(this); ta.setFocusable(isVisible()); return ta; } void resetBorder() { }
This is subclassed to put the text on the Comment attribute of the Element's AttributeSet.
/** * This is subclassed to put the text on the Comment attribute of * the Element's AttributeSet. */
void _updateModelFromText() { JTextComponent textC = getTextComponent(); Document doc = getDocument(); if (textC != null && doc != null) { String text = textC.getText(); SimpleAttributeSet sas = new SimpleAttributeSet(); isSettingAttributes = true; try { sas.addAttribute(HTML.Attribute.COMMENT, text); ((StyledDocument)doc).setCharacterAttributes (getStartOffset(), getEndOffset() - getStartOffset(), sas, false); } finally { isSettingAttributes = false; } } } JTextComponent getTextComponent() { return (JTextComponent)getComponent(); } String getRepresentedText() { AttributeSet as = getElement().getAttributes(); if (as != null) { Object comment = as.getAttribute(HTML.Attribute.COMMENT); if (comment instanceof String) { return (String)comment; } } return ""; } static final Border CBorder = new CommentBorder(); static final int commentPadding = 3; static final int commentPaddingD = commentPadding * 3; static class CommentBorder extends LineBorder { CommentBorder() { super(Color.black, 1); } public void paintBorder(Component c, Graphics g, int x, int y, int width, int height) { super.paintBorder(c, g, x + commentPadding, y, width - commentPaddingD, height); } public Insets getBorderInsets(Component c, Insets insets) { Insets retI = super.getBorderInsets(c, insets); retI.left += commentPadding; retI.right += commentPadding; return retI; } public boolean isBorderOpaque() { return false; } } // End of class CommentView.CommentBorder } // End of CommentView