private void ListViewItem_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
var listViewItem = sender as ListViewItem;
if (listViewItem == null)
{
return;
}
var topItem = listViewItem.Content as StatisticsItem;
if (topItem == null)
{
return;
}
var fileNode = ((TreeGridNodeViewModel)TreeGrid.Root).GetChild(IoHelpers.SplitPath(topItem.Path)[1]);
if (fileNode == null)
{
return;
}
var item = TreeGrid.ItemContainerGenerator.ContainerFromItem(fileNode) as ListViewItem;
if (item == null)
{
return;
}
TreeGrid.SelectedItems.Clear();
TreeGrid.Focus();
item.Focus();
item.IsSelected = true;
Keyboard.Focus(item);
TreeGrid.ScrollIntoView(item);
}
/// <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 WPF
if (!HasCurrentCellState || !IsInEditing)
{
return(true);
}
var currentCellUiElement = (MaskedTextBox)CurrentCellRendererElement;
switch (e.Key)
{
case Key.Escape:
{
currentCellUiElement.ClearValue(MaskedTextBox.ValueProperty);
return(true);
}
case Key.F2:
{
if (!IsInEditing)
{
TreeGrid.Focus();
}
return(true);
}
case Key.A:
return(SelectionHelper.CheckControlKeyPressed() && !IsInEditing);
case Key.Left:
return(currentCellUiElement.SelectionStart == currentCellUiElement.SelectionLength && !SelectionHelper.CheckControlKeyPressed() && !SelectionHelper.CheckShiftKeyPressed());
case Key.Right:
return(currentCellUiElement.CaretIndex >= currentCellUiElement.Text.Length && !SelectionHelper.CheckControlKeyPressed() && !SelectionHelper.CheckShiftKeyPressed());
case Key.Home:
return(currentCellUiElement.SelectionStart == currentCellUiElement.SelectionLength && !SelectionHelper.CheckControlKeyPressed() && !SelectionHelper.CheckShiftKeyPressed());
case Key.End:
return(currentCellUiElement.CaretIndex == currentCellUiElement.Text.Length && !SelectionHelper.CheckControlKeyPressed() && !SelectionHelper.CheckShiftKeyPressed());
}
#else
if (!HasCurrentCellState)
{
return(true);
}
if (!IsInEditing)
{
ProcessPreviewTextInput(e);
if (!(CurrentCellRendererElement is SfMaskedEdit))
{
return(true);
}
}
var currentCellUiElement = (SfMaskedEdit)CurrentCellRendererElement;
switch (e.Key)
{
case Key.Escape:
{
currentCellUiElement.ClearValue(SfMaskedEdit.TextProperty);
return(true);
}
}
#endif
return(base.ShouldGridTryToHandleKeyDown(e));
}
/// <summary>
/// Sets the focus to the specified current cell uielement.
/// </summary>
/// <param name="uiElement">
/// Specifies the corresponding current cell uielement.
/// </param>
/// <param name="needToFocus">
/// Decides whether the focus set to current cell uielement.
/// </param>
protected virtual void SetFocus(FrameworkElement uiElement, bool needToFocus)
{
if (uiElement != null && IsFocusable)
{
UIElement uielement;
var focusedElement = FocusManagerHelper.GetFocusedUIElement(CurrentCellRendererElement);
uielement = focusedElement ?? uiElement;
TreeGridColumn column = null;
if (needToFocus)
{
var columnIndex = TreeGrid.ResolveToGridVisibleColumnIndex(CurrentCellIndex.ColumnIndex);
column = TreeGrid.Columns[columnIndex];
}
//SupportsRenderOptimization condition checked to move the Focus always to CheckBox instead of DataGrid - WPF-22403
if (needToFocus && (IsInEditing || column.CanFocus() || !SupportsRenderOptimization))
{
if (IsFocused)
{
#if WPF
if (!uielement.IsFocused)
{
uielement.Focusable = true;
Keyboard.Focus(uielement);
}
#endif
return;
}
#if WPF
uielement.Focus();
#else
if (uielement is Control)
{
(uielement as Control).Focus(FocusState.Programmatic);
isfocused = false;
return;
}
#endif
isfocused = true;
}
else
{
#if WPF
this.TreeGrid.Focus();
#else
this.treeGrid.Focus(FocusState.Programmatic);
#endif
isfocused = false;
}
}
else
{
#if WPF
TreeGrid.Focus();
#else
TreeGrid.Focus(FocusState.Programmatic);
#endif
isfocused = false;
}
}