+ abstract protected JComponent createEmptyField(int item);
+
+ /**
+ * Get the information from the {@link MetaInfo} in the subclass preferred
+ * format.
+ *
+ * @param item
+ * the item number to get for an array of values, or -1 to get
+ * the whole value (has no effect if {@link MetaInfo#isArray()}
+ * is FALSE)
+ *
+ * @return the information in the subclass preferred format
+ */
+ abstract protected Object getFromInfo(int item);
+
+ /**
+ * Set the value to the {@link MetaInfo}.
+ *
+ * @param value
+ * the value in the subclass preferred format
+ * @param item
+ * the item number to get for an array of values, or -1 to get
+ * the whole value (has no effect if {@link MetaInfo#isArray()}
+ * is FALSE)
+ */
+ abstract protected void setToInfo(Object value, int item);
+
+ /**
+ * The value present in the given item's related field in the subclass
+ * preferred format.
+ *
+ * @param item
+ * the item number to get for an array of values, or -1 to get
+ * the whole value (has no effect if {@link MetaInfo#isArray()}
+ * is FALSE)
+ *
+ * @return the value present in the given item's related field in the
+ * subclass preferred format
+ */
+ abstract protected Object getFromField(int item);
+
+ /**
+ * Set the value (in the subclass preferred format) into the field.
+ *
+ * @param value
+ * the value in the subclass preferred format
+ * @param item
+ * the item number to get for an array of values, or -1 to get
+ * the whole value (has no effect if {@link MetaInfo#isArray()}
+ * is FALSE)
+ */
+ abstract protected void setToField(Object value, int item);
+
+ /**
+ * Create a label which width is constrained in lock steps.
+ *
+ * @param nhgap
+ * negative horisontal gap in pixel to use for the label, i.e.,
+ * the step lock sized labels will start smaller by that amount
+ * (the use case would be to align controls that start at a
+ * different horisontal position)
+ *
+ * @return the label
+ */
+ protected JComponent label(int nhgap) {
+ final JLabel label = new JLabel(getInfo().getName());
+
+ Dimension ps = label.getPreferredSize();
+ if (ps == null) {
+ ps = label.getSize();
+ }
+
+ ps.height = Math.max(ps.height, getMinimumHeight());
+
+ int w = ps.width;
+ int step = 150;
+ for (int i = 2 * step - nhgap; i < 10 * step; i += step) {
+ if (w < i) {
+ w = i;
+ break;
+ }
+ }
+
+ final Runnable showInfo = new Runnable() {
+ @Override
+ public void run() {
+ StringBuilder builder = new StringBuilder();
+ String text = (getInfo().getDescription().replace("\\n", "\n"))
+ .trim();
+ for (String line : StringUtils.justifyText(text, 80,
+ Alignment.LEFT)) {
+ if (builder.length() > 0) {
+ builder.append("\n");
+ }
+ builder.append(line);
+ }
+ text = builder.toString();
+ JOptionPane.showMessageDialog(ConfigItem.this, text, getInfo()
+ .getName(), JOptionPane.INFORMATION_MESSAGE);
+ }
+ };
+
+ JLabel help = new JLabel("");
+ help.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
+ setImage(help, img64info, "?");
+
+ help.addMouseListener(new MouseAdapter() {
+ @Override
+ public void mouseClicked(MouseEvent e) {
+ showInfo.run();
+ }
+ });
+
+ JPanel pane2 = new JPanel(new BorderLayout());
+ pane2.add(help, BorderLayout.WEST);
+ pane2.add(new JLabel(" "), BorderLayout.CENTER);
+
+ JPanel contentPane = new JPanel(new BorderLayout());
+ contentPane.add(label, BorderLayout.WEST);
+ contentPane.add(pane2, BorderLayout.CENTER);
+
+ ps.width = w + 30; // 30 for the (?) sign
+ contentPane.setSize(ps);
+ contentPane.setPreferredSize(ps);
+
+ JPanel pane = new JPanel(new BorderLayout());
+ pane.add(contentPane, BorderLayout.NORTH);
+
+ return pane;