Klasse TabButton

Alle implementierten Schnittstellen:
PointerInterface

public class TabButton extends Widget
A button that displays the number of [class@TabView] pages.

<picture>
<source srcset="tab-button-dark.png" media="(prefers-color-scheme: dark)">
<img src="tab-button.png" alt="tab-button">
</picture>

`AdwTabButton` is a button that displays the number of pages in a given
`AdwTabView`, as well as whether one of the inactive pages needs attention.

It's intended to be used as a visible indicator when there's no visible tab
bar, typically opening an [class@TabOverview] on click, e.g. via the
`overview.open` action name:

```xml
<object class="AdwTabButton">
<property name="view">view</property>
<property name="action-name">overview.open</property>
</object>
```

## CSS nodes

`AdwTabButton` has a main CSS node with name `tabbutton`.

# Accessibility

`AdwTabButton` uses the `GTK_ACCESSIBLE_ROLE_BUTTON` role.

https://gnome.pages.gitlab.gnome.org/libadwaita/doc/main/class.TabButton.html