private bool DisposeDataSource()
{
if (DataSource != null && this._isDisposing == false)
{
DataSource.OnSwipe -= OnSwipe;
DataSource.OnScrollEvent -= OnScrollEvent;
DataSource.Dispose();
DataSource = null;
this.Control.Source = null;
return(true);
}
return(false);
}
protected override void OnElementChanged(ElementChangedEventArgs <ListView> e)
{
base.OnElementChanged(e);
var customListview = Element as CustomListview;
if (customListview == null)
{
return;
}
if (this.Control != null && this._isDisposing == false && this.Element != null)
{
this.Control.MultipleTouchEnabled = true;
DataSource = new WrapperSource(Control.Source, Control, 55);
DataSource._LastYPosition = 0;
//DataSource._RemoveListViewInset = Source.RemoveInset;
Control.Source = DataSource;
DataSource.OnSwipe += OnSwipe;
DataSource.OnScrollEvent += OnScrollEvent;
}
if (Control != null)
{
var tvDelegate = new TableViewDelegate();
Control.Delegate = tvDelegate;
tvDelegate.OnScrolled += TvDelegate_OnScrolled;
tvDelegate.OnDecelerationStarted += (s, ev) =>
{
CustomListview.OnScrollStateChanged(customListview,
new ScrollStateChangedEventArgs(ScrollStateChangedEventArgs.ScrollState.Running));
};
tvDelegate.OnDecelerationEnded += (s, ev) =>
{
CustomListview.OnScrollStateChanged(customListview,
new ScrollStateChangedEventArgs(ScrollStateChangedEventArgs.ScrollState.Idle));
};
tvDelegate.OnRowSelected += (s, ev) =>
{
var index = s as NSIndexPath;
CustomListview.OnItemTappedIOS(customListview, new ItemTappedIOSEventArgs(index.Row));
};
}
}