add_notification

Sends a desktop notification.

The following keys may be present in notification:

• title `s`: a user-visible string to display as title
• body `s`: a user-visible string to display as body
• icon `v`: a serialized icon (in the format produced by [method@Gio.Icon.serialize])
• priority `s`: "low", "normal", "high" or "urgent"
• default-action `s`: name of an action that will be activated when the user clicks on the notification
• default-action-target `v`: target parameter to send along when activating the default action.
• buttons `aa{sv}`: array of serialized buttons

Each serialized button is a dictionary with the following supported keys:

• label `s`: user-visible lable for the button. Mandatory
• action `s`: name of an action that will be activated when the user clicks on the button. Mandatory
• target `v`: target parameter to send along when activating the button

Actions with a prefix of "app." are assumed to be exported by the application and will be activated via the org.freedesktop.Application interface, others are activated by emitting the [signal@Portal:XdpPortal:notification-action-invoked] signal.

It is the callers responsibility to ensure that the ID is unique among all notifications.

To withdraw a notification, use [method@Portal.remove_notification].

Parameters:

this	a [class@Portal]
id	unique ID for the notification
notification	a [struct@GLib.Variant] dictionary with the content of the notification
flags	options for this call
cancellable	optional [class@Gio.Cancellable]
callback	a callback to call when the request is done
data	data to pass to callback