@Override
public void onChildMoved(DataSnapshot dataSnapshot, String s) {
String modelName = dataSnapshot.getKey();
T oldModel = keys.get(modelName);
T newModel = dataSnapshot.getValue(itemClass);
setKey(modelName, newModel);
int index = list.indexOf(oldModel);
list.remove(index);
if (s == null) {
list.add(0, newModel);
} else {
T previousModel = keys.get(s);
int previousIndex = list.indexOf(previousModel);
int nextIndex = previousIndex + 1;
if (nextIndex == list.size()) {
list.add(newModel);
} else {
list.add(nextIndex, newModel);
}
}
sortList();
adapter.animateTo(list);
onChildAfter(dataSnapshot, State.MOVED);
}
@Override
public void onChildRemoved(DataSnapshot dataSnapshot) {
String modelName = dataSnapshot.getKey();
T oldModel = keys.get(modelName);
list.remove(oldModel);
keys.remove(modelName);
sortList();
adapter.animateTo(list);
onChildAfter(dataSnapshot, State.REMOVED);
}
@Override
public void onChildChanged(DataSnapshot dataSnapshot, String s) {
String modelName = dataSnapshot.getKey();
T oldModel = keys.get(modelName);
T newModel = dataSnapshot.getValue(itemClass);
setKey(modelName, newModel);
int index = list.indexOf(oldModel);
list.set(index, newModel);
keys.put(modelName, newModel);
sortList();
adapter.animateTo(list);
onChildAfter(dataSnapshot, State.CHANGED);
}
@Override
public void onChildAdded(DataSnapshot dataSnapshot, String s) {
T model = dataSnapshot.getValue(itemClass);
String modelName = dataSnapshot.getKey();
keys.put(modelName, model);
setKey(modelName, model);
if (s == null) {
list.add(0, model);
} else {
T previousModel = keys.get(s);
int previousIndex = list.indexOf(previousModel);
int nextIndex = previousIndex + 1;
if (nextIndex == list.size()) {
list.add(model);
} else {
list.add(nextIndex, model);
}
}
sortList();
adapter.animateTo(list);
onChildAfter(dataSnapshot, State.ADDED);
}
public void setComparator(Comparator<? super T> comparator) {
this.comparator = comparator;
sortList();
adapter.animateTo(list);
}