public PropertyDescriptorComponent(string name, string ic, CollectionComponentNames owner, Attribute[] attrs)
: base(name, attrs)
{
_ic = ic;
_owner = owner;
}
public override object EditValue(ITypeDescriptorContext context, IServiceProvider provider, object value)
{
if (context != null && provider != null)
{
IWindowsFormsEditorService edSvc = (IWindowsFormsEditorService)provider.GetService(typeof(IWindowsFormsEditorService));
if (edSvc != null)
{
Type scopeType = null;
Type scopeTypeWeb = null;
if (context.PropertyDescriptor.Attributes != null)
{
foreach (Attribute a in context.PropertyDescriptor.Attributes)
{
ComponentReferenceSelectorTypeAttribute cr = a as ComponentReferenceSelectorTypeAttribute;
if (cr != null)
{
scopeType = cr.ScopeType;
}
else
{
ComponentReferenceSelectorTypeWebAttribute crw = a as ComponentReferenceSelectorTypeWebAttribute;
if (crw != null)
{
scopeTypeWeb = crw.ScopeType;
}
}
}
}
if (scopeType != null || scopeTypeWeb != null)
{
bool bForName = false;
IComponent ic = context.Instance as IComponent;
if (ic == null)
{
IClassId icid = context.Instance as IClassId;
if (icid != null)
{
ic = icid.ObjectInstance as IComponent;
}
}
if (ic == null)
{
CollectionComponentNames cc = context.Instance as CollectionComponentNames;
if (cc != null)
{
ic = cc.Owner;
bForName = true;
}
}
if (ic != null && ic.Site != null)
{
ComponentList list = new ComponentList(edSvc);
list.Items.Add(string.Empty);
foreach (IComponent c in ic.Site.Container.Components)
{
Type t = c.GetType();
if (scopeType != null && scopeType.IsAssignableFrom(t))
{
list.Items.Add(c);
}
else if (scopeTypeWeb != null && scopeTypeWeb.IsAssignableFrom(t))
{
list.Items.Add(c);
}
}
if (list.Items.Count > 0)
{
edSvc.DropDownControl(list);
if (list.SelectedObj != null)
{
if (typeof(string).Equals(list.SelectedObj.GetType()))
{
value = null;
}
else
{
if (bForName)
{
IComponent ic2 = list.SelectedObj as IComponent;
if (ic2 != null && ic2.Site != null)
{
value = ic2.Site.Name;
}
}
else
{
value = list.SelectedObj;
}
}
}
}
}
}
}
}
return(value);
}