private static void CanExecuteRemove(object target, CanExecuteRoutedEventArgs e)
{
bool result = false;
YYTDataProviderCommandManager ctl = target as YYTDataProviderCommandManager;
if (ctl != null && ctl.Provider != null)
{
if (ctl.Provider.Data != null)
{
YYT.Core.BusinessBase bb = e.Parameter as YYT.Core.BusinessBase;
IBindingList list;
if (bb != null)
{
list = bb.Parent as IBindingList;
}
else
{
list = ctl.Provider.Data as IBindingList;
}
if (list != null)
{
result = list.AllowRemove;
if (result && !YYT.Security.AuthorizationRules.CanEditObject(ctl.Provider.Data.GetType()))
{
result = false;
}
}
}
}
e.CanExecute = result;
}
/// <summary>
/// Removes an item from the list if the object
/// implements IBindingList and AllowRemove is true.
/// </summary>
/// <param name="item">
/// The item to be removed from the list.
/// </param>
public void RemoveItem(object item)
{
// only do something if the object implements
// IBindingList
IBindingList list;
YYT.Core.BusinessBase bb = item as YYT.Core.BusinessBase;
if (bb != null)
{
list = bb.Parent as IBindingList;
}
else
{
list = this.Data as IBindingList;
}
if (list != null && list.AllowRemove)
{
list.Remove(item);
}
}
/// <summary>
/// By wrapping this property inside Using block
/// you can set property values on
/// <paramref name="businessObject">business object</paramref>
/// without raising PropertyChanged events
/// and checking user rights.
/// </summary>
/// <param name="businessObject">
/// Object on with you would like to set property values
/// </param>
/// <returns>
/// An instance of IDisposable object that allows
/// bypassing of normal authorization checks during
/// property setting.
/// </returns>
protected IDisposable BypassPropertyChecks(YYT.Core.BusinessBase businessObject)
{
return(businessObject.BypassPropertyChecks);
}
