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POText-wrapping JLabels with no preferred/max/min size
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  1. POText-wrapping JLabels with no preferred/max/min size
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    copied!<p>I'm using JLabels as hyperlinks. I want them to look and function exactly like a link in a browser, so using text panes/editor panes etc is not desirable. The problem is that many of the containers these links will be placed in do not have a size specified: they rely on the size of their parents (or even grand-parents). I am using Boxes for layouts, and if the link text spans more than about two-thirds the width of the box, the box contents begin to stretch outside the actual bounds of the box (so that, if that box were surrounded by a JScrollPane, a horizontal scrollbar would appear).</p> <p>Is there any way to enforce wrapping on a JLabel? Many posts I have read say that puttng the text in HTML tags will cause it to wrap automatically when necessary - but no matter what I do I cannot get this to work. I can't use <br /> tags because I do not know exactly where they would go (unless this could be automated - i.e.</p> <pre><code>if(text.length() &gt; wrapLength) { //break the text into substrings and insert a &lt;br /&gt; at wrapLength //the difficulty is in figuring out the value of wrapLength } </code></pre> <p>)</p> <p>Any ideas would be greatly appreciated. Code for the hyperlink class is below.</p> <pre><code>import java.awt.Color; import java.awt.Desktop; import java.awt.Font; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.io.IOException; import java.net.URI; import java.net.URISyntaxException; import javax.swing.JLabel; public class Hyperlink extends JLabel { private URI uri; private String baseText; public Hyperlink(String text, String uri, Font font, Color textColor) { super(text); baseText = text; setFont(font); setForeground(textColor); setOpaque(false); if(Desktop.isDesktopSupported()) { try { setToolTipText(uri); this.uri = new URI(uri); addMouseListener(new LinkMouseListener()); } catch(URISyntaxException ex) { } } } private class LinkMouseListener extends MouseAdapter { @Override public void mouseClicked(MouseEvent e) { Desktop desktop = Desktop.getDesktop(); try { desktop.browse(uri); } catch(IOException ioe) { System.out.println("Something went wrong..."); //DELETE } } @Override public void mouseEntered(MouseEvent e) { setText("&lt;html&gt;&lt;u&gt;" + baseText + "&lt;/u&gt;&lt;/html&gt;"); } @Override public void mouseExited(MouseEvent e) { setText(baseText); } } } </code></pre>
 

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