public ListViewBaseSelectionExtention(ListViewBase View, Rectangle RectangleInCanvas)
{
this.View = View ?? throw new ArgumentNullException(nameof(View), "Argument could not be null");
this.RectangleInCanvas = RectangleInCanvas ?? throw new ArgumentNullException(nameof(RectangleInCanvas), "Argument could not be null");
this.View.AddHandler(UIElement.PointerPressedEvent, PointerPressedHandler = new PointerEventHandler(View_RectangleDrawStart), true);
this.View.AddHandler(UIElement.PointerReleasedEvent, PointerReleasedHandler = new PointerEventHandler(View_RectangleDrawEnd), true);
this.View.AddHandler(UIElement.PointerCaptureLostEvent, PointerCaptureLostHandler = new PointerEventHandler(View_RectangleDrawEnd), true);
this.View.AddHandler(UIElement.PointerCanceledEvent, PointerCanceledHandler = new PointerEventHandler(View_RectangleDrawEnd), true);
this.View.AddHandler(UIElement.PointerMovedEvent, PointerMovedHandler = new PointerEventHandler(View_PointerMoved), true);
if (View.IsLoaded)
{
InnerScrollView = View.FindChildOfType <ScrollViewer>();
InnerScrollBar = View.FindChildOfType <ScrollBar>();
if (InnerScrollBar != null)
{
InnerScrollBar.Scroll += InnerScrollBar_Scroll;
}
}
else
{
this.View.Loaded += View_Loaded;
}
}
private void View_Loaded(object sender, RoutedEventArgs e)
{
View.Loaded -= View_Loaded;
InnerScrollView = View.FindChildOfType <ScrollViewer>();
InnerScrollBar = View.FindChildOfType <ScrollBar>();
if (InnerScrollBar != null)
{
InnerScrollBar.Scroll += InnerScrollBar_Scroll;
}
}
public ListViewBaseSelectionExtention(ListViewBase View, Rectangle RectangleInCanvas)
{
this.View = View ?? throw new ArgumentNullException(nameof(View), "Argument could not be null");
this.RectangleInCanvas = RectangleInCanvas ?? throw new ArgumentNullException(nameof(RectangleInCanvas), "Argument could not be null");
if (RectangleInCanvas.Parent is not Canvas)
{
throw new ArgumentException("Reactangle must be placed in Canvas", nameof(RectangleInCanvas));
}
this.View.PointerPressed += View_RectangleDrawStart;
this.View.PointerReleased += View_RectangleDrawEnd;
this.View.PointerCaptureLost += View_RectangleDrawEnd;
this.View.PointerCanceled += View_RectangleDrawEnd;
if (View.IsLoaded)
{
InnerScrollView = View.FindChildOfType <ScrollViewer>();
}
else
{
this.View.Loaded += View_Loaded;
}
}
private void View_Loaded(object sender, Windows.UI.Xaml.RoutedEventArgs e)
{
View.Loaded -= View_Loaded;
InnerScrollView = View.FindChildOfType <ScrollViewer>();
}