/**
* Moves the configuration object with the given index in the list of configuration objects. This
* is implemented by swapping contents of two Preferences child nodes.
*
* @param index Index of configuration object to move.
* @param up If <code>true</code>, move configuration up in list, otherwise, move it down.
*/
public void moveElement(int index, boolean up) {
// copy-paste all config
int targetIndex = up ? (index - 1) : (index + 1);
if (targetIndex < 0 || targetIndex > preferences.getChildNodeNames().length - 1) {
return;
}
MutablePreferences source = preferences.createChildNode(prefix + index);
MutablePreferences target = preferences.createChildNode(prefix + targetIndex);
SimplePreferences buf = new SimplePreferences(null);
ConfigUtil.copyPreferences(source, buf);
ConfigUtil.copyPreferences(target, source);
ConfigUtil.copyPreferences(buf, target);
}
private void tidyUp(int startIndex) {
maxId = -1;
// build a list as they are now in config
try {
List<T> elements = buildFromConfig(preferences, prefix, configClass);
for (int i = startIndex; i < elements.size(); i++) {
if (elements.get(i).getId() > i) {
T t = createObject(i);
Preferences source = elements.get(i).getConfigNode();
MutablePreferences target = t.getConfigNode();
ConfigUtil.copyPreferences(source, target);
// delete source
preferences.removeChildNode(elements.get(i).getConfigNodeName(elements.get(i).getId()));
}
}
maxId = elements.size() - 1;
} catch (Exception e) {
throw new RuntimeException(e);
}
}