private void OnMouseUp(object sender, MouseButtonEventArgs e)
{
if (e.ChangedButton != MouseButton.Left)
{
return;
}
if (HasCurrentCellState && !((CheckBox)sender).IsPressed && IsFocused)
{
((CheckBox)sender).IsChecked = !((CheckBox)sender).IsChecked;
TreeGridCell treeGridCell = null;
var checkBox = sender as CheckBox;
if (checkBox.Parent is TreeGridCell)
{
treeGridCell = checkBox.Parent as TreeGridCell;
}
var rowColumnIndex = new RowColumnIndex();
rowColumnIndex.RowIndex = treeGridCell != null ? treeGridCell.ColumnBase.RowIndex : new RowColumnIndex().RowIndex;
rowColumnIndex.ColumnIndex = treeGridCell != null ? treeGridCell.ColumnBase.ColumnIndex : new RowColumnIndex().ColumnIndex;
if (!rowColumnIndex.IsEmpty)
{
TreeGrid.RaiseCurrentCellValueChangedEvent(new TreeGridCurrentCellValueChangedEventArgs(TreeGrid)
{
RowColumnIndex = rowColumnIndex, Record = checkBox.DataContext, Column = treeGridCell.ColumnBase.TreeGridColumn
});
}
}
}
/// <summary>
/// Called when [CheckBox click].
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">The <see cref="RoutedEventArgs"/> instance containing the event data.</param>
void OnCheckBoxClick(object sender, RoutedEventArgs e)
{
var checkBox = sender as CheckBox;
TreeGridCell treeGridCell = null;
if (checkBox.Parent is TreeGridCell)
{
treeGridCell = checkBox.Parent as TreeGridCell;
}
var rowcolumnIndex = new RowColumnIndex();
rowcolumnIndex.RowIndex = treeGridCell != null ? treeGridCell.ColumnBase.RowIndex : new RowColumnIndex().RowIndex;
rowcolumnIndex.ColumnIndex = treeGridCell != null ? treeGridCell.ColumnBase.ColumnIndex : new RowColumnIndex().ColumnIndex;
#if !WPF
if (checkBox.IsThreeState)
{
SetIsChecked(checkBox, checkBox.IsChecked);
}
if (!rowcolumnIndex.IsEmpty)
{
this.TreeGrid.SelectionController.HandlePointerOperations(new GridPointerEventArgs(PointerOperation.Pressed, null), rowcolumnIndex);
this.TreeGrid.SelectionController.HandlePointerOperations(new GridPointerEventArgs(PointerOperation.Released, null), rowcolumnIndex);
}
#endif
TreeGrid.RaiseCurrentCellValueChangedEvent(new TreeGridCurrentCellValueChangedEventArgs(TreeGrid)
{
RowColumnIndex = rowcolumnIndex, Record = checkBox.DataContext, Column = treeGridCell.ColumnBase.TreeGridColumn
});
if (HasCurrentCellState)
{
BindingExpression = this.CurrentCellRendererElement.GetBindingExpression(ToggleButton.IsCheckedProperty);
}
//when check or uncheck the checkbox, setter property of checkbox column fires two times in the Model class.
//while loading, we set the updatesourcetrigger as explicit for checkboxcolumn if we set updatetrigger as PropertyChanged in sample for checkboxcolumn.
//so skips the below call by checking the updatesourcetrigger.
#if WPF
if (treeGridCell.ColumnBase.TreeGridColumn.isValueMultiBinding)
{
if (BindingExpression != null && (treeGridCell != null && (treeGridCell.ColumnBase.TreeGridColumn.ValueBinding as MultiBinding).UpdateSourceTrigger == UpdateSourceTrigger.Explicit))
{
BindingExpression.UpdateSource();
}
}
else if (BindingExpression != null && (treeGridCell != null && (treeGridCell.ColumnBase.TreeGridColumn.ValueBinding as Binding).UpdateSourceTrigger == UpdateSourceTrigger.Explicit))
{
BindingExpression.UpdateSource();
}
#else
if (BindingExpression != null && (treeGridCell != null && (treeGridCell.ColumnBase.TreeGridColumn.ValueBinding as Binding).UpdateSourceTrigger == UpdateSourceTrigger.Explicit))
{
BindingExpression.UpdateSource();
}
#endif
}
protected virtual void CurrentRendererValueChanged()
{
var column = (TreeGrid.Columns[TreeGrid.ResolveToGridVisibleColumnIndex(CurrentCellIndex.ColumnIndex)]);
TreeGrid.RaiseCurrentCellValueChangedEvent(new TreeGridCurrentCellValueChangedEventArgs(TreeGrid)
{
RowColumnIndex = CurrentCellIndex, Record = CurrentCellRendererElement.DataContext, Column = column
});
if (column.UpdateTrigger != UpdateSourceTrigger.PropertyChanged || BindingExpression == null)
{
return;
}
if (BindingExpression.DataItem == null)
{
return;
}
object oldValue = null;
if (TreeGrid.View != null)
{
oldValue = TreeGrid.View.GetPropertyAccessProvider()
.GetValue(BindingExpression.DataItem, BindingExpression.ParentBinding.Path.Path);
}
BindingExpression.UpdateSource();
object Text = null;
if (TreeGrid.View != null)
{
Text = TreeGrid.View.GetPropertyAccessProvider()
.GetValue(BindingExpression.DataItem, BindingExpression.ParentBinding.Path.Path);
}
object newValue;
string errorMessage;
var treeNode = TreeGrid.View.Nodes.GetNode(BindingExpression.DataItem);
if (!TreeGrid.ValidationHelper.RaiseCurrentCellValidatingEvent(oldValue, Text, column, out newValue, CurrentCellIndex, CurrentCellElement, out errorMessage, BindingExpression.DataItem, treeNode))
{
return;
}
if (!ReferenceEquals(newValue, Text))
{
SetControlValue(newValue);
}
if (TreeGrid.GridValidationMode != GridValidationMode.None)
{
TreeGrid.ValidationHelper.ValidateColumn(BindingExpression.DataItem, BindingExpression.ParentBinding.Path.Path, (TreeGridCell)CurrentCellElement, CurrentCellIndex);
}
TreeGrid.ValidationHelper.RaiseCurrentCellValidatedEvent(oldValue, Text, column, errorMessage, BindingExpression.DataItem, treeNode);
}
/// <summary>
/// Raises the <see cref="Syncfusion.UI.Xaml.TreeGrid.SfTreeGrid.CurrentCellValueChanged"/> event.
/// </summary>
/// <param name="treeGrid">
/// The corresponding grid that contains the cell value changes .
/// </param>
/// <param name="dataColumn">
/// The data column Which holds TreeGridColumn, RowColumnIndex and TreeGridCell.
/// </param>
public void RaiseCurrentCellValueChangedEvent(SfTreeGrid treeGrid, TreeDataColumnBase dataColumn)
{
var e = new TreeGridCurrentCellValueChangedEventArgs(treeGrid)
{
RowColumnIndex = new RowColumnIndex()
{
RowIndex = dataColumn.RowIndex, ColumnIndex = dataColumn.ColumnIndex
},
Record = currentCellRendererElement.DataContext,
Column = dataColumn.TreeGridColumn
};
TreeGrid.RaiseCurrentCellValueChangedEvent(e);
}