void OnOwnerMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
if (doNotProcessMouse)
{
return;
}
HitTestResult result = VisualTreeHelper.HitTest(this.owner, e.GetPosition(this.owner));
UIElement element = result == null ? null : result.VisualHit as UIElement;
DependencyObject dom = element == null ? null : LayoutHelper.FindLayoutOrVisualParentObject(element, d => GetOverrideManipulation(d));
if (dom != null)
{
return;
}
if (!this.owner.CaptureMouse())
{
return;
}
mouseMoveHandled = false;
e.Handled = true;
this.lastPosition = e.GetPosition(this.owner);
this.manipulationInProgress = true;
}
private void OnGridControlClicked(object sender, MouseButtonEventArgs e)
{
var columnHeader = LayoutHelper.FindLayoutOrVisualParentObject((DependencyObject)e.OriginalSource, typeof(GridColumnHeader)) as GridColumnHeader;
if (columnHeader == null || Model == null || Model.WorkInProgress)
{
return;
}
var clickedColumn = (GridColumn)columnHeader.DataContext;
if (clickedColumn.Tag == null)
{
return;
}
ClearSortExcept(columnHeader);
var sortUpControl = (ColumnHeaderSortIndicatorControl)_sortUpProperty.GetValue(columnHeader, null);
var sortDownControl = (ColumnHeaderSortIndicatorControl)_sortDownProperty.GetValue(columnHeader, null);
ColumnSortOrder sort;
if (sortUpControl.Visibility != Visibility.Visible)
{
sortUpControl.Visibility = Visibility.Visible;
sortDownControl.Visibility = Visibility.Hidden;
sort = ColumnSortOrder.Ascending;
}
else
{
sortUpControl.Visibility = Visibility.Hidden;
sortDownControl.Visibility = Visibility.Visible;
sort = ColumnSortOrder.Descending;
}
SortData(clickedColumn, sort);
}
protected override FrameworkElement FindParent(object sender, DependencyObject originalSource)
{
return(LayoutHelper.FindLayoutOrVisualParentObject(originalSource, x => CheckItemType(sender)(x), true, (DependencyObject)sender) as FrameworkElement);
}
bool IsScrollContentPresenterAndHasRowPresenterGridAsParent(FrameworkElement e)
{
return(IsScrollContentPresenter(e) && LayoutHelper.FindLayoutOrVisualParentObject(e, IsRowPresenterGrid) != null);
}
