A property-info can only have one property-typ-data. That means,
all functions (get_fcn(), set_fcn()) need to either take not
property-typ-data, or they must all accept the same.
That made it hard to mix _get_fcn_nmc_with_default() with setters
that do require a certain property-typ-data. Instead, move the
is_default_func() to the general portion, and let _get_fcn_gobject()
handle it.
Instead of having a trivial macro that defines a function, define the
function directly.
Having such a macro would make sense if DEFINE_REMOVER_OPTION() would do
the right thing and we would reuse the (preferred) implementation.
That's not the case, because these remove_fcn() implementations don't
mirror the way how set_fcn() splits and sets options. They are
inconsistent (wrong), and should will later get merged with set_fcn().
Instead of using a macro to define the individual set/remove functions,
add a new property type _pt_multilist.
This way, we have more the concept of a property having a type, instead
of a property having a set of handlers how to implement something.
Also, this is only the first step. There are several similar properties
that also can be implemented as the same type.
The property implementation must itself decide how to reset a value.
We must not rely on properties being plain GObject properties.
Let set_fcn() accept %NULL value to indicate resetting the default.
Previously we had DEFINE_REMOVER_INDEX_OR_VALUE_DIRECT() and
DEFINE_REMOVER_INDEX_OR_VALUE_VALIDATING_STATIC().
Note that all property-infos of DEFINE_REMOVER_INDEX_OR_VALUE_VALIDATING_STATIC()
would also define values_static list, while DEFINE_REMOVER_INDEX_OR_VALUE_DIRECT()
would not.
Merge the two macros. The property-info should define how the
implementation behaves, we should not have two implementations.
set_fcn() of NM_SETTING_802_1X_EAP is implemented via
DEFINE_SETTER_STR_LIST_MULTI() -- thus, considering valid values
from the static list.
The remove_fcn() should do that too, to be consistent.
We don't need DEFINE_SETTER_STR_LIST_MULTI() to define a static function
that is called by the set_fcn() implementation. Instead, let the macro
define the actual set_fcn() function.
Not all implementations support having the value being an index.
For example, the implementations that are done via DEFINE_REMOVER_OPTION() macro.
The meaning of the "value" string must not be determined by
nmc_setting_remove_property_option(). It's up to the implementation
to decide whether to allow an index and how to interpret it.
$ nmcli connection add type vlan autoconnect no con-name v dev vlan.1 id 1
$ nmcli connection modify v +vlan.ingress-priority-map 1:2,2:3
$ nmcli connection modify v +vlan.ingress-priority-map 2:3,4:5
$ nmcli connection modify v -vlan.ingress-priority-map 1:2,4:5
Warning: only one mapping at a time is supported; taking the first one (1:2)
