public override void OnUpdateEditBinding(TreeDataColumnBase dataColumn, ContentControl uiElement, object dataContext)
{
TreeGridColumn column = dataColumn.TreeGridColumn;
if (column.SetCellBoundValue)
{
var dataContextHelper = new TreeGridDataContextHelper {
Record = dataContext, DataRow = dataColumn.DataRow
};
dataContextHelper.SetValueBinding(column.ValueBinding, dataContext);
uiElement.Content = dataContextHelper;
}
else
{
uiElement.SetBinding(ContentControl.ContentProperty, new Binding());
}
}
/// <summary>
/// Updates the tool tip for GridCell.
/// </summary>
/// <param name="dataColumn">Which holds GridColumn, Row Column Index and GridCell</param>
public override void UpdateToolTip(TreeDataColumnBase dataColumn)
{
var uiElement = dataColumn.ColumnElement;
var column = dataColumn.TreeGridColumn;
if (dataColumn.IsEditing || column == null || !column.ShowToolTip)
{
uiElement.ClearValue(ToolTipService.ToolTipProperty);
return;
}
object dataContext = dataColumn.ColumnElement.DataContext;
var obj = ToolTipService.GetToolTip(uiElement);
ToolTip tooltip;
if (obj is ToolTip)
{
tooltip = obj as ToolTip;
}
else
{
tooltip = new ToolTip();
}
if (column.hasToolTipTemplate || column.hasToolTipTemplateSelector)
{
if (column.SetCellBoundToolTip)
{
var dataContextHelper = new TreeGridDataContextHelper {
Record = dataContext
};
dataContextHelper.SetValueBinding(column.DisplayBinding, dataContext);
tooltip.Content = dataContextHelper;
}
else
{
tooltip.Content = dataContext;
}
if (column.hasToolTipTemplate)
{
tooltip.ContentTemplate = column.ToolTipTemplate;
}
else if (column.hasToolTipTemplateSelector)
{
tooltip.ContentTemplateSelector = column.ToolTipTemplateSelector;
}
}
else
{
var provider = column.TreeGrid.View.GetPropertyAccessProvider();
if (provider != null)
{
var displaytext = Convert.ToString(provider.GetFormattedValue(dataColumn.ColumnElement.DataContext, column.MappingName));
tooltip.Content = displaytext;
if (string.IsNullOrEmpty(displaytext))
{
tooltip.IsEnabled = false;
}
}
}
//Specifies to raise tooltip opening event for the corresponding cell
if (dataColumn.RaiseCellToolTipOpening(tooltip))
{
ToolTipService.SetToolTip(uiElement, tooltip);
}
else
{
uiElement.ClearValue(ToolTipService.ToolTipProperty);
}
}