private void SelectionHandler(object sender, DataGridCellPointerPressedEventArgs args)
{
IDataContextProvider obj = args.Cell.Content as IDataContextProvider;
if (obj == null)
{
return;
}
var dc = obj.DataContext;
if ((obj as INamed).Name != "TagPanel")
{
if (dc.GetType() == typeof(DirectoryItem))
{
switch (args.PointerPressedEventArgs.GetCurrentPoint(null).Properties.PointerUpdateKind)
{
case (PointerUpdateKind.LeftButtonPressed):
SaveLastRowPosition(sender, args);
var temp = (DirectoryItem)dc;
OpenDirectory(temp);
break;
case (PointerUpdateKind.RightButtonPressed):
(this.DataContext as DirectoryViewModel).LoadBackup((DirectoryItem)dc);
break;
}
}
return;
}
}
private void OnDataGridCellPointerPressed(object sender, DataGridCellPointerPressedEventArgs args)
{
if (args.PointerPressedEventArgs.ClickCount == 2)
{
var fileViewModel = (FileViewModel)args.Cell.DataContext;
fileViewModel.OpenCommand.Execute(null);
}
}
private void DGV_CellPointerPressed(object sender, DataGridCellPointerPressedEventArgs e)
{
const int OutputFileName_Column_DisplayIndex = 0;
const int OutputDirectory_Column_DisplayIndex = 1;
var pp = e.PointerPressedEventArgs.GetCurrentPoint(null);
switch (pp.Properties.PointerUpdateKind) //e.PointerPressedEventArgs.MouseButton )
{
case PointerUpdateKind.LeftButtonPressed: //MouseButton.Left:
switch (e.Column.DisplayIndex)
{
case OutputFileName_Column_DisplayIndex:
case OutputDirectory_Column_DisplayIndex:
{
bool is_valid(int _rowIndex, DownloadRow _selectedDownloadRow) => ((0 <= _rowIndex) && (_rowIndex < _Model.RowsCount) && (_Model[_rowIndex] == _selectedDownloadRow));
var selectedDownloadRow = this.GetSelectedDownloadRow();
var rowIndex = e.Row.GetIndex();
if (is_valid(rowIndex, selectedDownloadRow))
{
var evnt = (e.Column.DisplayIndex == OutputFileName_Column_DisplayIndex) ? OutputFileNameClick : OutputDirectoryClick;
if (evnt != null)
{
e.PointerPressedEventArgs.Pointer.Capture(null);
e.PointerPressedEventArgs.Handled = true;
evnt(selectedDownloadRow);
//Dispatcher.UIThread.Post( () => evnt( selectedDownloadRow ) );
}
}
}
break;
}
break;
case PointerUpdateKind.RightButtonPressed: //MouseButton.Right:
{
var evnt = MouseClickRightButton;
if (evnt != null)
{
var row = (e.PointerPressedEventArgs.Source as IControl)?.GetSelfAndVisualAncestors().OfType <DataGridRow>().FirstOrDefault();
if (row != null)
{
DGV.SelectedIndex = row.GetIndex();
}
e.PointerPressedEventArgs.Pointer.Capture(null);
e.PointerPressedEventArgs.Handled = true;
evnt(pp.Position, this.GetSelectedDownloadRow());
}
}
break;
}
}
private void SaveLastRowPosition(object sender, DataGridCellPointerPressedEventArgs args)
{
var gridBottom = ((TransformedBounds)(sender as DataGrid).TransformedBounds).Clip.Bottom;
var cellBottom = ((TransformedBounds)args.Cell.TransformedBounds).Clip.Bottom;
var cellHeight = ((TransformedBounds)args.Cell.TransformedBounds).Clip.Height;
var percentageOfLastRow = (decimal)((gridBottom - cellBottom) / cellHeight);
var numberOfRemainingRows = (int)decimal.Round(percentageOfLastRow, System.MidpointRounding.AwayFromZero);
var itemsAsList = (sender as DataGrid).Items.Cast <DirectoryItem>().ToList();
var currentIndex = itemsAsList.IndexOf((args.Cell.Content as IDataContextProvider).DataContext as DirectoryItem);
if (currentIndex + numberOfRemainingRows < itemsAsList.Count)
{
lastObject = itemsAsList[currentIndex + numberOfRemainingRows];
return;
}
lastObject = itemsAsList.Last();
}
private static void OnCellPointerPressed(object sender, DataGridCellPointerPressedEventArgs e)
{
if (!(sender is DataGrid target))
{
return;
}
if (e.Row is null)
{
return;
}
ICommand command = GetCellPointerPressedCommand(target);
if (command?.CanExecute(e.Row.DataContext) ?? false)
{
command.Execute(e.Row.DataContext);
}
}
private void OnDataGridCellPointerPressed(object sender, DataGridCellPointerPressedEventArgs args) => ActivateViewModel();
private void DataGrid_CellPointerPressed(object sender, DataGridCellPointerPressedEventArgs e)
{
Cell = e.Cell;
Column = e.Column as DataGridPropertyTextColumn;
}
