protected override void OnKeyDown(KeyRoutedEventArgs e)
{
if ((SelectionHelper.CheckAltKeyPressed() && e.Key == Key.Down) || (SelectionHelper.CheckAltKeyPressed() && e.Key == Key.Up))
{
if (!this.ColumnBase.IsEditing)
{
this.ColumnBase.Renderer.DataGrid.SelectionController.CurrentCellManager.BeginEdit();
}
this.OpenFilterOptionPopup();
e.Handled = true;
}
base.OnKeyDown(e);
}
/// <summary>
/// Let Renderer decide whether the parent grid should be allowed to handle keys and prevent
/// the key event from being handled by the visual UIElement for this renderer. If this method
/// returns true the parent grid will handle arrow keys and set the Handled flag in the event
/// data. Keys that the grid does not handle will be ignored and be routed to the UIElement
/// for this renderer.
/// </summary>
/// <param name="e">A <see cref="KeyEventArgs" /> object.</param>
/// <returns>
/// True if the parent grid should be allowed to handle keys; false otherwise.
/// </returns>
protected override bool ShouldGridTryToHandleKeyDown(KeyEventArgs e)
{
if (!HasCurrentCellState || !IsInEditing)
{
return(true);
}
#if WPF
var combobox = (CurrentCellRendererElement as ComboBox);
TextBox comboTextBox = (TextBox)GridUtil.FindDescendantChildByType(combobox, typeof(TextBox));
#endif
#if WPF
if ((SelectionHelper.CheckAltKeyPressed() && e.SystemKey == Key.Down) || ((SelectionHelper.CheckAltKeyPressed() && e.SystemKey == Key.Up) || e.Key == Key.F4))
#else
if ((SelectionHelper.CheckAltKeyPressed() && e.Key == Key.Down) || ((SelectionHelper.CheckAltKeyPressed() && e.Key == Key.Up) || e.Key == Key.F4))
#endif
{
var comboBox = ((ComboBox)CurrentCellRendererElement);
comboBox.IsDropDownOpen = !comboBox.IsDropDownOpen;
#if UWP
comboBox.Focus(FocusState.Programmatic);
#endif
return(false);
}
switch (e.Key)
{
case Key.End:
case Key.Home:
case Key.Enter:
case Key.Escape:
return(!((ComboBox)CurrentCellRendererElement).IsDropDownOpen);
case Key.Down:
case Key.Up:
#if UWP
return(!((ComboBox)CurrentCellRendererElement).IsDropDownOpen);
#endif
#if WPF
// WPF-25803 - Up/Down Needs to be handle by UiElement itself to change the selection whether drop down open or not/ IsEditable set or not set.
return(false);
case Key.Right:
return(((ComboBox)CurrentCellRendererElement).IsEditable ? (comboTextBox.SelectionStart >= comboTextBox.Text.Length && !SelectionHelper.CheckControlKeyPressed() && !SelectionHelper.CheckShiftKeyPressed()) : true);
case Key.Left:
return(((ComboBox)CurrentCellRendererElement).IsEditable ? (comboTextBox.SelectionStart == comboTextBox.SelectionLength && !SelectionHelper.CheckControlKeyPressed() && !SelectionHelper.CheckShiftKeyPressed()) : true);
#endif
}
return(base.ShouldGridTryToHandleKeyDown(e));
}