public override void attach(ScrollPosition position) { base.attach(position); D.assert(!this._positionToListener.ContainsKey(position)); this._positionToListener[position] = () => { this._lastUpdated = position; this._lastUpdatedOffset = position.pixels; }; position.addListener(this._positionToListener[position]); }
public virtual void attach(ScrollPosition position) { D.assert(!this._positions.Contains(position)); this._positions.Add(position); position.addListener(this.notifyListeners); }