bool CheckCanDeleteFlags(CanDeleteFlags flag)
{
// if DeleteItem or DeleteMultipleItems, we can assume that the delete
// operation is supported. If it is not supported for a specific context,
// then the CanDelete* method will be overriden, in which case this
// CheckCanDeleteFlags won't be used.
if (canDeleteFlags == CanDeleteFlags.NotChecked)
{
canDeleteFlags |= CanDeleteFlags.Checked;
if (GetType().GetMethod("DeleteItem").DeclaringType != typeof(NodeCommandHandler))
{
canDeleteFlags |= CanDeleteFlags.Single;
}
if (GetType().GetMethod("DeleteMultipleItems").DeclaringType != typeof(NodeCommandHandler) &&
GetType().GetMethod("CanDeleteItem").DeclaringType == typeof(NodeCommandHandler))
{
canDeleteFlags |= CanDeleteFlags.Multiple;
}
}
return((canDeleteFlags & flag) != 0);
}
bool CheckCanDeleteFlags (CanDeleteFlags flag)
{
// if DeleteItem or DeleteMultipleItems, we can assume that the delete
// operation is supported. If it is not supported for a specific context,
// then the CanDelete* method will be overriden, in which case this
// CheckCanDeleteFlags won't be used.
if (canDeleteFlags == CanDeleteFlags.NotChecked) {
canDeleteFlags |= CanDeleteFlags.Checked;
if (GetType().GetMethod ("DeleteItem").DeclaringType != typeof(NodeCommandHandler))
canDeleteFlags |= CanDeleteFlags.Single;
if (GetType().GetMethod ("DeleteMultipleItems").DeclaringType != typeof(NodeCommandHandler) &&
GetType().GetMethod ("CanDeleteItem").DeclaringType == typeof(NodeCommandHandler))
canDeleteFlags |= CanDeleteFlags.Multiple;
}
return (canDeleteFlags & flag) != 0;
}
