/**
* Implements ListSelectionListener.valueChanged. Enables or disables call and hangup buttons
* depending on the selection in the contactlist.
*/
public void valueChanged(ListSelectionEvent e) {
Object o = mainFrame.getContactListPanel().getContactList().getSelectedValue();
if ((e.getFirstIndex() != -1 || e.getLastIndex() != -1) && (o instanceof MetaContact)) {
setCallMetaContact(true);
// Switch automatically to the appropriate pps in account selector
// box and enable callButton if telephony is supported.
Contact contact = ((MetaContact) o).getDefaultContact(OperationSetBasicTelephony.class);
if (contact != null) {
callButton.setEnabled(true);
if (contact.getProtocolProvider().isRegistered())
getAccountSelectorBox().setSelected(contact.getProtocolProvider());
} else {
callButton.setEnabled(false);
}
} else if (phoneNumberCombo.isComboFieldEmpty()) {
callButton.setEnabled(false);
}
}
