处理超链接右键单击JTextPane
我试图在我的程序中检测JTextPane中的超链接的右键单击。 这个问题在网上确实没什么。 有人能帮我吗？
public class rchltest extends Applet { public void init() { JPanel panel = new JPanel(false); JEditorPane gentextp = new JTextPane(); JScrollPane scrollPane = new JScrollPane(gentextp); panel.add(scrollPane); scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS); gentextp.setContentType("text/html"); gentextp.setEditable(false); gentextp.addHyperlinkListener(new texthll()); gentextp.setPreferredSize( new Dimension( 500, 400 ) ); gentextp.setText("Here is a hyperlink"); this.add( panel ); } } class texthll implements HyperlinkListener { public void hyperlinkUpdate(HyperlinkEvent event) { if (event.getEventType() == HyperlinkEvent.EventType.ACTIVATED) { JEditorPane pane = (JEditorPane)event.getSource(); URL url = event.getURL(); // Show the new page in the editor pane. JOptionPane.showMessageDialog( null, url); } } } 使用传统的鼠标监听器。 HyperlinkListener仅转发鼠标移动和左键单击。
这是一个小的演示代码：
import java.awt.BorderLayout; import java.awt.Desktop; import java.awt.Dimension; 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.JEditorPane; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTextPane; import javax.swing.SwingUtilities; import javax.swing.UIManager; import javax.swing.UnsupportedLookAndFeelException; import javax.swing.event.HyperlinkEvent; import javax.swing.event.HyperlinkListener; import javax.swing.text.AttributeSet; import javax.swing.text.Element; import javax.swing.text.html.HTML; import javax.swing.text.html.HTMLDocument; public class TestHyperlinks { private final class HyperlinkMouseListener extends MouseAdapter { @Override public void mouseClicked(MouseEvent e) { if (e.getButton() == MouseEvent.BUTTON3) { Element h = getHyperlinkElement(e); if (h != null) { Object attribute = h.getAttributes().getAttribute(HTML.Tag.A); if (attribute instanceof AttributeSet) { AttributeSet set = (AttributeSet) attribute; String href = (String) set.getAttribute(HTML.Attribute.HREF); if (href != null) { try { Desktop.getDesktop().browse(new URI(href)); } catch (IOException e1) { e1.printStackTrace(); } catch (URISyntaxException e1) { e1.printStackTrace(); } } } } } } private Element getHyperlinkElement(MouseEvent event) { JEditorPane editor = (JEditorPane) event.getSource(); int pos = editor.getUI().viewToModel(editor, event.getPoint()); if (pos >= 0 && editor.getDocument() instanceof HTMLDocument) { HTMLDocument hdoc = (HTMLDocument) editor.getDocument(); Element elem = hdoc.getCharacterElement(pos); if (elem.getAttributes().getAttribute(HTML.Tag.A) != null) { return elem; } } return null; } } protected void initUI() { JPanel panel = new JPanel(false); JEditorPane gentextp = new JTextPane(); JScrollPane scrollPane = new JScrollPane(gentextp); panel.add(scrollPane); scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS); gentextp.setContentType("text/html"); gentextp.setEditable(false); gentextp.setPreferredSize(new Dimension(500, 400)); gentextp.addMouseListener(new HyperlinkMouseListener()); gentextp.setText("Some text containing an hyperlink: a link to stackoverflow and some more text not in an hyperlink"); JFrame f = new JFrame(TestHyperlinks.class.getSimpleName()); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.add(panel, BorderLayout.CENTER); f.pack(); f.setSize(f.getWidth() + 100, f.getHeight() + 100); f.setVisible(true); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException, UnsupportedLookAndFeelException { UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); SwingUtilities.invokeLater(new Runnable() { @Override public void run() { new TestHyperlinks().initUI(); } }); } }
添加常用的MouseListener并单击右键单击。 单击时，使用JEditorPane viewToModel()方法获取Document中的偏移量。 然后检查是否使用StyledDocument getCharacterElement()方法获取叶元素。 然后检查叶子是否是超链接。
或者你可以使用这个http://java-sl.com/tip_links_in_editable.html来实现你自己的LinkController