Class
GObjectSignalGroup
since: 2.72
Description
final class GObject.SignalGroup : GObject.Object
{
/* No available fields */
}GSignalGroup manages to simplify the process of connecting
many signals to a GObject as a group. As such there is no API
to disconnect a signal from the group.
In particular, this allows you to:
- Change the target instance, which automatically causes disconnection of the signals from the old instance and connecting to the new instance.
- Block and unblock signals as a group
- Ensuring that blocked state transfers across target instances.
One place you might want to use such a structure is with GtkTextView and
GtkTextBuffer. Often times, you’ll need to connect to many signals on
GtkTextBuffer from a GtkTextView subclass. This allows you to create a
signal group during instance construction, simply bind the
GtkTextView:buffer property to GSignalGroup:target and connect
all the signals you need. When the GtkTextView:buffer property changes
all of the signals will be transitioned correctly.
Available since: 2.72
Instance methods
g_signal_group_block
Blocks all signal handlers managed by self so they will not
be called during any signal emissions. Must be unblocked exactly
the same number of times it has been blocked to become active again.
since: 2.72
g_signal_group_connect
Connects c_handler to the signal detailed_signal
on the target instance of self.
since: 2.72
g_signal_group_connect_after
Connects c_handler to the signal detailed_signal
on the target instance of self.
since: 2.72
g_signal_group_connect_closure
Connects closure to the signal detailed_signal on GSignalGroup:target.
since: 2.74
g_signal_group_connect_data
Connects c_handler to the signal detailed_signal
on the target instance of self.
since: 2.72
g_signal_group_connect_object
Connects c_handler to the signal detailed_signal on GSignalGroup:target.
since: 2.72
g_signal_group_connect_swapped
Connects c_handler to the signal detailed_signal
on the target instance of self.
since: 2.72
g_signal_group_set_target
Sets the target instance used when connecting signals. Any signal
that has been registered with g_signal_group_connect_object() or
similar functions will be connected to this object.
since: 2.72
g_signal_group_unblock
Unblocks all signal handlers managed by self so they will be
called again during any signal emissions unless it is blocked
again. Must be unblocked exactly the same number of times it
has been blocked to become active again.
since: 2.72
Signals
GObject.SignalGroup::bind
This signal is emitted when GSignalGroup:target is set to a new value
other than NULL. It is similar to GObject::notify on target except it
will not emit when GSignalGroup:target is NULL and also allows for
receiving the GObject without a data-race.
since: 2.72
GObject.SignalGroup::unbind
This signal is emitted when the target instance of self is set to a
new GObject.
since: 2.72
Signals inherited from GObject (1)
GObject::notify
The notify signal is emitted on an object when one of its properties has its value set through g_object_set_property(), g_object_set(), et al.