@Override
public Component getListCellRendererComponent(
JList<? extends E> list, E value, int index, boolean isSelected, boolean cellHasFocus) {
label.setText(Objects.toString(value, ""));
this.list = list;
this.index = index;
if (isSelected) {
setBackground(list.getSelectionBackground());
label.setForeground(list.getSelectionForeground());
} else {
setBackground(index % 2 == 0 ? EVEN_COLOR : list.getBackground());
label.setForeground(list.getForeground());
}
MutableComboBoxModel m = (MutableComboBoxModel) list.getModel();
if (index < 0 || m.getSize() - 1 <= 0) {
setOpaque(false);
deleteButton.setVisible(false);
label.setForeground(list.getForeground());
} else {
boolean f = index == rolloverIndex;
setOpaque(true);
deleteButton.setVisible(true);
deleteButton.getModel().setRollover(f);
deleteButton.setForeground(f ? Color.WHITE : list.getForeground());
}
return this;
}
@Override
public void actionPerformed(ActionEvent e) {
MutableComboBoxModel m = (MutableComboBoxModel) list.getModel();
if (m.getSize() > 1) {
m.removeElementAt(index);
comboBox.showPopup();
}
}
/** This method is used to change the dynamically label of an object in this JInvidChooser. */
public void relabelObject(Invid invid, String newLabel) {
MutableComboBoxModel model = (MutableComboBoxModel) getModel();
synchronized (model) {
for (int i = 0; i < model.getSize(); i++) {
listHandle lh = (listHandle) model.getElementAt(i);
if (lh != null && lh.getObject() != null && lh.getObject().equals(invid)) {
model.removeElementAt(i);
lh.setLabel(newLabel);
model.insertElementAt(lh, i);
repaint();
break;
}
}
}
}
/**
* Insert the given item into the combo box, and set it as first selected item. If the item
* already exists, it is removed, so there are no duplicates.
*
* @param item the item to insert. if it's null, then nothing is inserted
*/
public static void insertIntoCombo(JComboBox combo, Object item) {
if (item == null) {
return;
}
MutableComboBoxModel model = (MutableComboBoxModel) combo.getModel();
if (model.getSize() == 0) {
model.insertElementAt(item, 0);
return;
}
Object o = model.getElementAt(0);
if (o.equals(item)) {
return;
}
model.removeElement(item);
model.insertElementAt(item, 0);
combo.setSelectedIndex(0);
}