Java tutorial
/* * Copyright (C) 2015 Raydac Research Group Ltd. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package com.igormaznitsa.zxpoly.ui; import java.awt.Cursor; import java.awt.Desktop; import java.io.ByteArrayOutputStream; import java.io.InputStream; import javax.swing.event.HyperlinkEvent; import javax.swing.event.HyperlinkListener; import org.apache.commons.io.IOUtils; public class AboutDialog extends javax.swing.JDialog { private static final long serialVersionUID = 6729883219284422519L; public AboutDialog(final java.awt.Frame parent) { super(parent, true); initComponents(); this.editorPane.addHyperlinkListener(new HyperlinkListener() { @Override public void hyperlinkUpdate(final HyperlinkEvent e) { if (e.getEventType() == HyperlinkEvent.EventType.ACTIVATED) { try { Desktop.getDesktop().browse(e.getURL().toURI()); } catch (Exception ex) { } } else if (e.getEventType() == HyperlinkEvent.EventType.ENTERED) { editorPane.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR)); } else if (e.getEventType() == HyperlinkEvent.EventType.EXITED) { editorPane.setCursor(Cursor.getDefaultCursor()); } } }); this.editorPane.setContentType("text/html"); try { final String htmlText = IOUtils.toString(openAboutResource("index.html"), "UTF-8"); this.editorPane.setText(htmlText); } catch (Exception ex) { ex.printStackTrace(); } setLocationRelativeTo(parent); } /** * This method is called from within the constructor to initialize the form. * WARNING: Do NOT modify this code. The content of this method is always * regenerated by the Form Editor. */ @SuppressWarnings("unchecked") // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents private void initComponents() { buttonOk = new javax.swing.JButton(); jScrollPane1 = new javax.swing.JScrollPane(); editorPane = new javax.swing.JEditorPane(); setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE); setTitle("About"); buttonOk.setIcon( new javax.swing.ImageIcon(getClass().getResource("/com/igormaznitsa/zxpoly/icons/ok.png"))); // NOI18N buttonOk.setText("Ok"); buttonOk.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { buttonOkActionPerformed(evt); } }); editorPane.setEditable(false); jScrollPane1.setViewportView(editorPane); javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); getContentPane().setLayout(layout); layout.setHorizontalGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addGroup( javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup().addContainerGap() .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING) .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 588, Short.MAX_VALUE) .addComponent(buttonOk, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)) .addContainerGap())); layout.setVerticalGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addGroup( javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup().addContainerGap() .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 421, Short.MAX_VALUE) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED).addComponent(buttonOk) .addContainerGap())); pack(); }// </editor-fold>//GEN-END:initComponents private void buttonOkActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_buttonOkActionPerformed setVisible(false); }//GEN-LAST:event_buttonOkActionPerformed // Variables declaration - do not modify//GEN-BEGIN:variables private javax.swing.JButton buttonOk; private javax.swing.JEditorPane editorPane; private javax.swing.JScrollPane jScrollPane1; // End of variables declaration//GEN-END:variables private InputStream openAboutResource(final String name) { return AboutDialog.class.getClassLoader().getResourceAsStream("com/igormaznitsa/zxpoly/about/" + name); } }