listenOnlyModified method

void listenOnlyModified(
  1. void callback(
    1. Iterable<B> value
    )
)

Listens for changes in the modified data and calls the provided callback with the new modified data.

Implementation

void listenOnlyModified(void Function(Iterable<B> value) callback) {
  if (value.isEmpty) load();
  addListener(() {
    if (_proxyModified != modified) {
      _proxyModified = modified;
      callback(modified);
    }
  });
}