private void subscribeArea(IArea area)
{
var areaBinding = area.Bind <IAreaComponent>(c => c.PropertyChanged += _onAreaPropertyChangedCallback, c => c.PropertyChanged -= _onAreaPropertyChangedCallback);
var scaleBinding = area.Bind <IScalingArea>(c => c.PropertyChanged += _onScalingAreaChangedCallback, c => c.PropertyChanged -= _onScalingAreaChangedCallback);
var restrictBinding = area.Bind <IAreaRestriction>(c =>
{
c.RestrictionList.OnListChanged.Subscribe(_onAreaRestrictionListChangedCallback);
c.PropertyChanged += _onAreaRestrictionChangedCallback;
}, c =>
{
c.RestrictionList.OnListChanged.Unsubscribe(_onAreaRestrictionListChangedCallback);
c.PropertyChanged -= _onAreaRestrictionChangedCallback;
});
var bindings = _areaBindings.GetOrAdd(area.ID, () => new List <IComponentBinding>());
bindings.Add(scaleBinding);
bindings.Add(areaBinding);
bindings.Add(restrictBinding);
}