/// <summary>
/// Factory method for creating the appropriate drop-down control based on the given property descriptor
/// </summary>
/// <param name="propertyDescriptor">
/// Property descriptor used to create the drop-down. If the property descriptor supports a UITypeEditor,
/// that will be used first. Otherwise, the type converter will be used.
/// </param>
/// <param name="instance">Instance of the object being edited.</param>
/// <param name="editStyle">
/// In the case that a UITypeEditor is used, controls the style of drop-down created. This
/// parameter is not used in the TypeConverter case.
/// </param>
/// <returns>A DropDownControl instance if the given property descriptor supports it, null otherwise.</returns>
internal static TypeEditorHost CreateTypeEditorHost(
PropertyDescriptor propertyDescriptor, object instance, TypeEditorHostEditControlStyle editControlStyle)
{
TypeEditorHost dropDown = null;
if (propertyDescriptor != null)
{
var uiTypeEditor = propertyDescriptor.GetEditor(typeof(UITypeEditor)) as UITypeEditor;
if (uiTypeEditor != null) // UITypeEditor case
{
dropDown = new TreeGridDesignerInPlaceEditDropDown(uiTypeEditor, propertyDescriptor, instance, editControlStyle);
}
else
{
var converter = propertyDescriptor.Converter;
if (converter != null &&
converter.GetStandardValuesSupported(null)) // converter case
{
dropDown = new TreeGridDesignerInPlaceEditCombo(converter, propertyDescriptor, instance, editControlStyle);
}
}
}
return(dropDown);
}
/// <summary>
/// Factory method for creating the appropriate drop-down control based on the given property descriptor
/// </summary>
/// <param name="propertyDescriptor">
/// Property descriptor used to create the drop-down. If the property descriptor supports a UITypeEditor,
/// that will be used first. Otherwise, the type converter will be used.
/// </param>
/// <param name="instance">Instance of the object being edited.</param>
/// <param name="editStyle">
/// In the case that a UITypeEditor is used, controls the style of drop-down created. This
/// parameter is not used in the TypeConverter case.
/// </param>
/// <returns>A DropDownControl instance if the given property descriptor supports it, null otherwise.</returns>
internal static TypeEditorHost CreateTypeEditorHost(
PropertyDescriptor propertyDescriptor, object instance, TypeEditorHostEditControlStyle editControlStyle)
{
TypeEditorHost dropDown = null;
if (propertyDescriptor != null)
{
var uiTypeEditor = propertyDescriptor.GetEditor(typeof(UITypeEditor)) as UITypeEditor;
if (uiTypeEditor != null) // UITypeEditor case
{
dropDown = new TreeGridDesignerInPlaceEditDropDown(uiTypeEditor, propertyDescriptor, instance, editControlStyle);
}
else
{
var converter = propertyDescriptor.Converter;
if (converter != null
&& converter.GetStandardValuesSupported(null)) // converter case
{
dropDown = new TreeGridDesignerInPlaceEditCombo(converter, propertyDescriptor, instance, editControlStyle);
}
}
}
return dropDown;
}