awt/swing实现超链接的自定义控件
1、awc/swing实现超链接的自定义控件
public class HFLinkLabel extends JLabel {
private static final long serialVersionUID = -4533897048399372238L;
public String text, url;
private boolean isSupported;
public HFLinkLabel() {
}
public HFLinkLabel(String text, String url) {
this.text = text;
this.url = url;
try {
this.isSupported = Desktop.isDesktopSupported()
&& Desktop.getDesktop().isSupported(Desktop.Action.BROWSE);
} catch (Exception e) {
this.isSupported = false;
}
setText(false);
addMouseListener(new MouseAdapter() {
public void mouseEntered(MouseEvent e) {
setText(isSupported);
if (isSupported)
setCursor(new Cursor(Cursor.HAND_CURSOR));
}
public void mouseExited(MouseEvent e) {
setText(false);
}
public void mouseClicked(MouseEvent e) {
try {
Desktop.getDesktop().browse(
new java.net.URI(HFLinkLabel.this.url));
}catch (Exception ex) {
}
}
});
}
public void setText(boolean b) {
if (!b) {
setText("<html><font color=blue><u>" + text);
}else {
setText("<html><font color=red><u>" + text);
}
}
public void setLinkText(String text,boolean b) {
if (!b) {
setText("<html><font color=blue><u>" + text);
}else {
setText("<html><font color=red><u>" + text);
}
}
public static void main(String[] args) {
JFrame jf = new JFrame("一个超链接实现的例子");
JPanel jp = new JPanel();
jp.add(new HFLinkLabel("访问eRedLab", "http://hi.baidu.com/eRedLab"));
jf.setContentPane(jp);
jf.pack();
jf.setVisible(true);
}
}
