/// <summary>
/// When overridden in a derived class, returns a <see cref="T:System.Windows.DataTemplate"/> based on custom logic.
/// </summary>
/// <param name="item">The data object for which to select the template.</param>
/// <param name="container">The data-bound object.</param>
/// <returns>Returns a <see cref="T:System.Windows.DataTemplate" /> or null. The default value is null.</returns>
public override DataTemplate SelectTemplate(object item, DependencyObject container)
{
IDynamicList dynamicList = null;
var filter = container.ParentOfType<RadDataFilter>();
if (filter != null)
{
dynamicList = filter.DataContext as IDynamicList;
}
var propertyDefinition = (ItemPropertyDefinition)item;
var propertyType = propertyDefinition.PropertyType;
if (dynamicList != null)
{
var column = dynamicList.Columns.FirstOrDefault(c => c.ColumnName == propertyDefinition.PropertyName);
if (column != null)
{
propertyType = string.IsNullOrWhiteSpace(column.ReferenceTableName) ? column.Property.PropertyType : typeof(IInfoClass);
}
}
foreach (var rule in EditorTemplateRules)
{
// Select the appropriate template for each property.
if (rule.PropertyType == propertyType || rule.PropertyType == Nullable.GetUnderlyingType(propertyType))
{
return rule.DataTemplate;
}
}
return base.SelectTemplate(item, container);
}
/// <summary>
/// When overridden in a derived class, returns a DataTemplate based on custom logic.
/// </summary>
/// <param name="item">The data object for which to select the template.</param>
/// <param name="container">The data-bound object.</param>
/// <returns>DataTemplate.</returns>
public override DataTemplate SelectTemplate(object item, DependencyObject container)
{
if (item == null)
return null;
var filter = container.ParentOfType<RadDataFilter>();
if (filter == null)
return base.SelectTemplate(item, container);
var propertyDefinition = (ItemPropertyDefinition)item;
if (propertyDefinition.PropertyName == Constants.VersionDate)
{
var editorTemplateRule = EditorTemplateRules.FirstOrDefault(x => x.PropertyType == typeof(DateTime));
if (editorTemplateRule != null)
return editorTemplateRule.DataTemplate;
}
var propertyType = propertyDefinition.PropertyType;
var format = DynamicDataFilterBehavior.GetDateTimeFormat(propertyDefinition);
foreach (var rule in EditorTemplateRules)
{
if (rule.PropertyType == propertyType || rule.PropertyType == Nullable.GetUnderlyingType(propertyType))
{
if (rule.PropertyType == typeof(DateTime) && rule.DateTimeFormat != format)
continue;
return rule.DataTemplate;
}
}
return base.SelectTemplate(item, container);
}
/// <summary>
/// This recurse the visual tree for a parent of a specific type.
/// </summary>
internal static T GetParent <T>(this DependencyObject element) where T : FrameworkElement
{
return(element.ParentOfType <T>());
}
public static T GetVisualParent <T>(this DependencyObject element) where T : DependencyObject
{
return(element.ParentOfType <T>());
}
