ActionBar

Object Hierarchy:

Description:

[ CCode ( type_id = "gtk_action_bar_get_type ()" ) ]
public sealed class ActionBar : Widget, Accessible, Buildable, ConstraintTarget

`GtkActionBar` is designed to present contextual actions.

![An example GtkActionBar](action-bar.png)

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.

Namespace: Gtk

Package: gtk4

Content:

Properties:

public bool revealed { get; set; }
Controls whether the action bar shows its contents.

Creation methods:

public ActionBar ()
Creates a new `GtkActionBar` widget.

Methods:

public unowned Widget? get_center_widget ()
Retrieves the center bar widget of the bar.
public bool get_revealed ()
Gets whether the contents of the action bar are revealed.
public void pack_end (Widget child)
Adds child to this, packed with reference to the end of the this.
public void pack_start (Widget child)
Adds child to this, packed with reference to the start of the this.
public void remove (Widget child)
Removes a child from this.
public void set_center_widget (Widget? center_widget)
Sets the center widget for the `GtkActionBar`.
public void set_revealed (bool revealed)
Reveals or conceals the content of the action bar.

Inherited Members:

All known members inherited from class Gtk.Widget

All known members inherited from class GLib.Object

All known members inherited from interface Gtk.Accessible

All known members inherited from interface Gtk.Buildable