📄 editorpanelinkvisitor.java
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/* * $Id: EditorPaneLinkVisitor.java,v 1.1 2005/10/12 08:48:28 kleopatra Exp $ * * Copyright 2004 Sun Microsystems, Inc., 4150 Network Circle, * Santa Clara, California 95054, U.S.A. All rights reserved. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */package org.jdesktop.swingx;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.io.IOException;import java.net.URL;import javax.swing.SwingUtilities;import javax.swing.event.HyperlinkEvent;import javax.swing.event.HyperlinkListener;import javax.swing.text.Document;/** * A ActionListener using a JXEditorPane to "visit" a LinkModel. * * adds an internal HyperlinkListener to visit links contained * in the document. * * @author Jeanette Winzenburg */public class EditorPaneLinkVisitor implements ActionListener { private JXEditorPane editorPane; private HyperlinkListener hyperlinkListener; private LinkModel internalLink; public EditorPaneLinkVisitor() { this(null); } public EditorPaneLinkVisitor(JXEditorPane pane) { if (editorPane != null) { editorPane.removeHyperlinkListener(getHyperlinkListener()); } if (pane == null) { pane = createDefaultEditorPane(); } this.editorPane = pane; pane.addHyperlinkListener(getHyperlinkListener()); } public JXEditorPane getOutputComponent() { return editorPane; } public void actionPerformed(ActionEvent e) { if (e.getSource() instanceof LinkModel) { final LinkModel link = (LinkModel) e.getSource(); SwingUtilities.invokeLater(new Runnable() { public void run() { visit(link); } }); } } public void visit(LinkModel link) { try { // make sure to reload editorPane.getDocument().putProperty(Document.StreamDescriptionProperty, null); // JW: editorPane defaults to asynchronous loading // no need to explicitly start a thread - really? editorPane.setPage(link.getURL()); link.setVisited(true); } catch (IOException e1) { editorPane.setText("<html>Error 404: couldn't show " + link.getURL() + " </html>"); } } protected JXEditorPane createDefaultEditorPane() { final JXEditorPane editorPane = new JXEditorPane(); editorPane.setEditable(false); editorPane.setContentType("text/html"); return editorPane; } protected HyperlinkListener getHyperlinkListener() { if (hyperlinkListener == null) { hyperlinkListener = createHyperlinkListener(); } return hyperlinkListener; } protected HyperlinkListener createHyperlinkListener() { HyperlinkListener l = new HyperlinkListener() { public void hyperlinkUpdate(HyperlinkEvent e) { if (HyperlinkEvent.EventType.ACTIVATED == e.getEventType()) { visitInternal(e.getURL()); } } }; return l; } protected LinkModel getInternalLink() { if (internalLink == null) { internalLink = new LinkModel("internal"); } return internalLink; } protected void visitInternal(URL url) { try { getInternalLink().setURL(url); visit(getInternalLink()); } catch (Exception e) { // todo: error feedback } }}⌨️ 快捷键说明
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