SuperVCD java

import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.border.*; import java.util.*; /** * 增加新的CD信息 */ public class MusicEntryDialog extends JDialog { protected Frame parentFrame; protected ArrayList categoryArrayList; protected JTextField artistTextField; protected JTextField titleTextField; protected JComboBox categoryComboBox; protected boolean okButtonPressed = false; protected JButton okButton; protected JButton cancelButton; protected DefaultListModel trackListModel; public MusicEntryDialog(Frame theParentFrame, ArrayList theCategories) { this(theParentFrame, "Add A New Recording", theCategories); } public MusicEntryDialog(Frame theParentFrame, String theTitle, ArrayList theCategories) { super(theParentFrame, theTitle, true); // creates a modal dialog parentFrame = theParentFrame; categoryArrayList = theCategories; buildGui(); } private void buildGui() { Container container = this.getContentPane(); container.setLayout(new BorderLayout()); JPanel infoPanel = new JPanel(); infoPanel.setBorder(new EmptyBorder(10, 10, 0, 10)); infoPanel.setLayout(new GridBagLayout()); GridBagConstraints c = new GridBagConstraints(); c.gridx = 0; c.gridy = 1; c.gridwidth = 3; c.weightx = 0.0; c.weighty = 0.0; c.fill = GridBagConstraints.BOTH; c.anchor = GridBagConstraints.WEST; c.insets = new Insets(5, 0, 2, 5); JLabel artistLabel = new JLabel("Artist: "); artistLabel.setForeground(Color.black); infoPanel.add(artistLabel, c); c.gridy = 2; c.insets = new Insets(2, 0, 2, 5); JLabel titleLabel = new JLabel("Title: "); titleLabel.setForeground(Color.black); infoPanel.add(titleLabel, c); c.gridy = 3; c.insets = new Insets(2, 0, 10, 5); JLabel categoryLabel = new JLabel("Category: "); categoryLabel.setForeground(Color.black); infoPanel.add(categoryLabel, c); c.gridx = 3; c.gridy = 1; c.gridwidth = GridBagConstraints.REMAINDER; c.fill = GridBagConstraints.HORIZONTAL; c.weightx = 1.0; c.weighty = 1.0; c.insets = new Insets(2, 0, 0, 5); artistTextField = new JTextField(15); infoPanel.add(artistTextField, c); c.gridy = 2; c.insets = new Insets(2, 0, 10, 5); titleTextField = new JTextField(15); infoPanel.add(titleTextField, c); categoryComboBox = new JComboBox(); Iterator iterator = categoryArrayList.iterator(); String aCategory; while (iterator.hasNext()) { aCategory = (String) iterator.next(); categoryComboBox.addItem(aCategory); } c.gridy = 3; c.fill = GridBagConstraints.NONE; c.anchor = GridBagConstraints.WEST; infoPanel.add(categoryComboBox, c); c.gridy = 4; JButton addTrackButton = new JButton("增加 Track..."); addTrackButton.setToolTipText("点击以便增加信息"); infoPanel.add(addTrackButton, c); container.add(BorderLayout.NORTH, infoPanel); trackListModel = new DefaultListModel(); JList tracksListBox= new JList(trackListModel); JScrollPane tracksScrollPane = new JScrollPane(tracksListBox); TitledBorder listBorder = BorderFactory.createTitledBorder("List of Tracks"); listBorder.setTitleColor(Color.black); tracksScrollPane.setBorder(listBorder); container.add(BorderLayout.CENTER, tracksScrollPane); JPanel bottomPanel = new JPanel(); okButton = new JButton("OK"); bottomPanel.add(okButton); cancelButton = new JButton("Cancel"); bottomPanel.add(cancelButton); container.add(BorderLayout.SOUTH, bottomPanel); addTrackButton.addActionListener(new TrackActionListener()); ActionListener buttonListener = new OkCancelActionListener(); okButton.addActionListener(buttonListener); cancelButton.addActionListener(buttonListener); this.pack(); Point parentLocation = parentFrame.getLocation(); this.setLocation(parentLocation.x + 50, parentLocation.y + 50); } public boolean isOkButtonPressed() { return okButtonPressed; } public MusicRecording getMusicRecording() { String artist = artistTextField.getText(); String title = titleTextField.getText(); String category = (String) categoryComboBox.getSelectedItem(); int basePrice = 9 + (int) (Math.random() * 7); double price = basePrice + .99; int size = trackListModel.getSize(); Track[] trackList = new Track[size]; for (int i=0; i < size; i++) { trackList[i] = (Track) trackListModel.getElementAt(i); } MusicRecording theRecording = new MusicRecording(artist, trackList, title, price, category, "blank.gif"); return theRecording; } class OkCancelActionListener implements ActionListener { public void actionPerformed(ActionEvent event) { Object source = event.getSource(); if (source == okButton) { okButtonPressed = true; } else { okButtonPressed = false; } setVisible(false); } } class TrackActionListener implements ActionListener { public void actionPerformed(ActionEvent event) { TrackEntryDialog myTrackDialog = new TrackEntryDialog(parentFrame); myTrackDialog.setVisible(true); if (myTrackDialog.isOkButtonPressed()) { Track theTrack = myTrackDialog.getTrack(); trackListModel.addElement(theTrack); } } } }