Interface

Gio-2.0 ▶ Gio ▶ DebugControllerDBus ▶ SignalSignatures

interface SignalSignatures {
    authorize: (arg0: Gio.DBusMethodInvocation) => boolean | void;
    notify: (arg0: GObject.ParamSpec) => void;
    "notify::connection": (pspec: GObject.ParamSpec) => void;
    "notify::debug-enabled": (pspec: GObject.ParamSpec) => void;
}

Hierarchy (View Summary)

Index

Properties

authorize notify::connection notify::debug-enabled

Properties - Inherited from GObject

notify

Properties

authorize: (arg0: Gio.DBusMethodInvocation) => boolean | void

Emitted when a D-Bus peer is trying to change the debug settings and used to determine if that is authorized.

This signal is emitted in a dedicated worker thread, so handlers are allowed to perform blocking I/O. This means that, for example, it is appropriate to call polkit_authority_check_authorization_sync() to check authorization using polkit.

If false is returned then no further handlers are run and the request to change the debug settings is rejected.

Otherwise, if true is returned, signal emission continues. If no handlers return false, then the debug settings are allowed to be changed.

Signal handlers must not modify invocation, or cause it to return a value.

The default class handler just returns true.

2.72

"notify::connection": (pspec: GObject.ParamSpec) => void
"notify::debug-enabled": (pspec: GObject.ParamSpec) => void

Properties - Inherited from GObject

notify: (arg0: GObject.ParamSpec) => void

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.

Note that getting this signal doesn’t itself guarantee that the value of the property has actually changed. When it is emitted is determined by the derived GObject class. If the implementor did not create the property with GObject.ParamFlags.EXPLICIT_NOTIFY, then any call to g_object_set_property() results in ::notify being emitted, even if the new value is the same as the old. If they did pass GObject.ParamFlags.EXPLICIT_NOTIFY, then this signal is emitted only when they explicitly call g_object_notify() or g_object_notify_by_pspec(), and common practice is to do that only when the value has actually changed.

This signal is typically used to obtain change notification for a single property, by specifying the property name as a detail in the g_signal_connect() call, like this:

g_signal_connect (text_view->buffer, "notify::paste-target-list",
                  G_CALLBACK (gtk_text_view_target_list_notify),
                  text_view)

It is important to note that you must use [canonical parameter names][class@GObject.ParamSpec#parameter-names] as detail strings for the notify signal.