Java tutorial
/* =========================================================================== Copyright 2002-2010 Martin Dvorak Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. =========================================================================== */ package com.emental.mindraider.ui.dialogs; import java.awt.BorderLayout; import java.awt.FlowLayout; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyEvent; import java.awt.event.KeyListener; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import javax.swing.JButton; import javax.swing.JCheckBox; import javax.swing.JLabel; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swing.JTextField; import javax.xml.namespace.QName; import org.apache.commons.lang.StringUtils; import com.emental.mindraider.core.MindRaider; import com.mindcognition.mindraider.commons.MindRaiderConstants; import com.mindcognition.mindraider.ui.swing.Gfx; import com.mindcognition.mindraider.ui.swing.dialogs.ProgramIconJDialog; /** * Add triplet. * * @author Martin.Dvorak. * @version $Revision: 1.5 $ ($Author: mindraider $) */ public class AddTripletJDialog extends ProgramIconJDialog { /** * The serial version uid for serialization. */ private static final long serialVersionUID = 1L; /** * The predicate NS text field. */ private JTextField predicateNs; /** * The predicate local name text field. */ private JTextField predicateLocalName; /** * The object NS text field. */ private JTextField objectNs; /** * The object local name text field. */ private JTextField objectLocalName; /** * The literal check box. */ private JCheckBox literalCheckBox; /** * Constructor. */ public AddTripletJDialog() { super("Add Triplet"); JPanel framePanel = new JPanel(); framePanel.setLayout(new GridLayout(4, 1)); JPanel p = new JPanel(); p.setLayout(new FlowLayout(FlowLayout.RIGHT)); p.add(new JLabel(" Predicate: ")); predicateNs = new JTextField(30); predicateNs.setText(MindRaiderConstants.MR_RDF_PREDICATE_NS); predicateNs.selectAll(); p.add(predicateNs); p.add(new JLabel("#")); predicateLocalName = new JTextField(15); p.add(predicateLocalName); framePanel.add(p); p = new JPanel(); p.setLayout(new FlowLayout(FlowLayout.RIGHT)); p.add(new JLabel(" Object: ")); objectNs = new JTextField(30); objectNs.setText(MindRaiderConstants.MR_RDF_PREDICATE_NS); objectNs.selectAll(); p.add(objectNs); p.add(new JLabel("#")); objectLocalName = new JTextField(15); objectLocalName.grabFocus(); objectLocalName.selectAll(); objectLocalName.addKeyListener(new KeyListener() { public void keyPressed(KeyEvent keyEvent) { if (keyEvent.getKeyCode() == KeyEvent.VK_ENTER) { createTriplet(); } } public void keyReleased(KeyEvent keyEvent) { } public void keyTyped(KeyEvent keyEvent) { } }); p.add(objectLocalName); framePanel.add(p); p = new JPanel(); p.setLayout(new FlowLayout(FlowLayout.RIGHT)); literalCheckBox = new JCheckBox("literal", false); p.add(literalCheckBox); framePanel.add(p); p = new JPanel(); p.setLayout(new FlowLayout(FlowLayout.CENTER)); JButton addButton = new JButton("Add"); p.add(addButton); addButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { createTriplet(); } }); JButton cancelButton = new JButton("Cancel"); p.add(cancelButton); cancelButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { AddTripletJDialog.this.dispose(); } }); framePanel.add(p); getContentPane().add(framePanel, BorderLayout.CENTER); // show pack(); Gfx.centerAndShowWindow(this); addWindowListener(new WindowAdapter() { public void windowActivated(WindowEvent e) { getObjectLocalName().requestFocusInWindow(); } }); } /** * Create a triplet. */ protected void createTriplet() { if (StringUtils.isEmpty(predicateNs.getText())) { predicateNs.setText(MindRaiderConstants.MR_RDF_NS); } if (StringUtils.isEmpty(predicateLocalName.getText())) { predicateLocalName.setText(MindRaiderConstants.MR_RDF_PREDICATE); } if (StringUtils.isEmpty(objectNs.getText())) { objectNs.setText(MindRaiderConstants.MR_RDF_NS); } if (StringUtils.isEmpty(objectLocalName.getText())) { JOptionPane.showMessageDialog(MindRaider.mainJFrame, "You must specify object name.", "Statement Creation Error", JOptionPane.ERROR_MESSAGE); return; } MindRaider.spidersGraph.createStatement(new QName(predicateNs.getText(), predicateLocalName.getText()), new QName(objectNs.getText(), objectLocalName.getText()), literalCheckBox.isSelected()); AddTripletJDialog.this.dispose(); } /** * Getter for <code>objectLocalName</code>. * * @return Returns the objectLocalName. */ public JTextField getObjectLocalName() { return this.objectLocalName; } /** * Setter for <code>objectLocalName</code>. * * @param objectLocalName * The objectLocalName to set. */ public void setObjectLocalName(JTextField objectLocalName) { this.objectLocalName = objectLocalName; } }