ActionBar

class ActionBar(**properties: Any)

Superclasses: Widget, InitiallyUnowned, Object

Implemented Interfaces: Accessible, Buildable, ConstraintTarget

GtkActionBar is designed to present contextual actions.

It is expected to be displayed below the content and expand horizontally to fill the area.

It allows placing children at the start or the end. In addition, it contains an internal centered box which is centered with respect to the full width of the box, even if the children at either side take up different amounts of space.

GtkActionBar as GtkBuildable

The GtkActionBar implementation of the GtkBuildable interface supports adding children at the start or end sides by specifying “start” or “end” as the “type” attribute of a <child> element, or setting the center widget by specifying “center” value.

CSS nodes

actionbar
╰── revealer
    ╰── box
        ├── box.start
        │   ╰── [start children]
        ├── [center widget]
        ╰── box.end
            ╰── [end children]

A GtkActionBar’s CSS node is called actionbar. It contains a revealer subnode, which contains a box subnode, which contains two box subnodes at the start and end of the action bar, with start and `end style classes respectively, as well as a center node that represents the center child.

Each of the boxes contains children packed for that side.

Constructors

class ActionBar

classmethod new() → Widget

Creates a new GtkActionBar widget.

Methods

class ActionBar

get_center_widget() → Widget | None

Retrieves the center bar widget of the bar.

get_revealed() → bool

Gets whether the contents of the action bar are revealed.

pack_end(child: Widget) → None

Adds child to action_bar, packed with reference to the end of the action_bar.

Parameters:

child – the GtkWidget to be added to action_bar

pack_start(child: Widget) → None

Adds child to action_bar, packed with reference to the start of the action_bar.

Parameters:

child – the GtkWidget to be added to action_bar

remove(child: Widget) → None

Removes a child from action_bar.

Parameters:

child – the GtkWidget to be removed

set_center_widget(center_widget: Widget | None = None) → None

Sets the center widget for the GtkActionBar.

Parameters:

center_widget – a widget to use for the center

set_revealed(revealed: bool) → None

Reveals or conceals the content of the action bar.

Note: this does not show or hide action_bar in the visible sense, so revealing has no effect if the action bar is hidden.

Parameters:

revealed – The new value of the property

Properties

class ActionBar

props.revealed: bool

The type of the None singleton.