DefaultsEditor.java 文件源码

/**
 * Adds an input field to select from a ComboBox
 * @param text text to be shown on a label
 * @param property property to be changed in Defaults
 * @param cont container where input field must be added
 * @param values Map with internal value <-> showed value relations
 */
protected void addInputCombo(String text, final String property, Container cont, final Map<String, String> values) {
    JLabel label = new JLabel(text + ":");
    JComboBox combo = new JComboBox(values.values().toArray());
    combo.setName(property);
    label.setLabelFor(combo);
    combo.setSelectedItem(values.get(Defaults.get(property)));
    // Sets maximum size to minimal one, otherwise springLayout will stretch this
    combo.setMaximumSize(new Dimension(combo.getMaximumSize().width, combo.getMinimumSize().height));
    combo.addItemListener(new ItemListener() {
        public void itemStateChanged(ItemEvent e) {
            // As Map does not allows reverse mapping, scans the entire keyset to
            // find the key corresponding to a given object
            Object[] keys = values.keySet().toArray();
            for (Object key : keys) {
                if (values.get(key) == e.getItem()) {
                    Defaults.set(property, (String) key);
                }
            }
        }
    });
    cont.add(label);
    cont.add(combo);
}