### Class

# Panel Frame

#### Description [src]

    class Panel.Frame : Gtk.Widget
      implements Gtk.Accessible, Gtk.Buildable, Gtk.ConstraintTarget, Gtk.Orientable {
      /* No available fields */
    }

The `PanelFrame` is a widget containing panels to display in an area. The widgets are added internally in an `AdwTabView` to display them one at a time like in a stack.

A `PanelFrame` can also have a header widget that will be displayed above the panels.

#### Ancestors

- GtkWidget
- GInitiallyUnowned
- GObject

#### Implements

- GtkAccessible
- GtkBuildable
- GtkConstraintTarget
- GtkOrientable

#### Constructors

###### panel_frame_new

Create a new `PanelFrame`.

#### Instance methods

###### panel_frame_add

Adds a widget to the frame.

###### panel_frame_add_before

Add `panel` before `sibling` in the `PanelFrame`.

###### panel_frame_get_closeable

Tells if the panel frame is closeable.

###### panel_frame_get_empty

Tells if the panel frame is empty.

###### panel_frame_get_header

Gets the header for the frame.

###### panel_frame_get_n_pages

Gets the number of pages in the panel frame.

###### panel_frame_get_page

Gets the page with the given index, if any.

###### panel_frame_get_pages

Get the pages for the frame.

###### panel_frame_get_placeholder

Gets the placeholder widget, if any.

###### panel_frame_get_position

Gets the `PanelPosition` for the frame.

###### panel_frame_get_requested_size

Gets the requested size for the panel frame.

###### panel_frame_get_visible_child

Gets the widget of the currently visible child.

###### panel_frame_remove

Removes a widget from the frame.

###### panel_frame_set_child_pinned

Set pinned state of `child`.

since: 1.2

###### panel_frame_set_header

Sets the header for the frame, such as a `PanelFrameSwitcher`.

###### panel_frame_set_placeholder

Sets the placeholder widget for the frame.

###### panel_frame_set_requested_size

Sets the requested size for the panel frame.

###### panel_frame_set_visible_child

Sets the current page to the child specified in `widget`.

##### Methods inherited from GtkWidget (164)

Please see GtkWidget for a full list of methods.

##### Methods inherited from GObject (43)

Please see GObject for a full list of methods.

##### Methods inherited from GtkAccessible (20)

###### gtk_accessible_announce

Requests the user’s screen reader to announce the given message.

###### gtk_accessible_get_accessible_parent

Retrieves the accessible parent for an accessible object.

###### gtk_accessible_get_accessible_role

Retrieves the accessible role of an accessible object.

###### gtk_accessible_get_at_context

Retrieves the implementation for the given accessible object.

###### gtk_accessible_get_bounds

Queries the coordinates and dimensions of this accessible.

###### gtk_accessible_get_first_accessible_child

Retrieves the first accessible child of an accessible object.

###### gtk_accessible_get_next_accessible_sibling

Retrieves the next accessible sibling of an accessible object.

###### gtk_accessible_get_platform_state

Queries a platform state, such as focus.

###### gtk_accessible_reset_property

Resets the accessible property to its default value.

###### gtk_accessible_reset_relation

Resets the accessible relation to its default value.

###### gtk_accessible_reset_state

Resets the accessible state to its default value.

###### gtk_accessible_set_accessible_parent

Sets the parent and sibling of an accessible object.

###### gtk_accessible_update_next_accessible_sibling

Updates the next accessible sibling.

###### gtk_accessible_update_platform_state

Informs ATs that the platform state has changed.

###### gtk_accessible_update_property

Updates a list of accessible properties.

###### gtk_accessible_update_property_value

Updates an array of accessible properties.

###### gtk_accessible_update_relation

Updates a list of accessible relations.

###### gtk_accessible_update_relation_value

Updates an array of accessible relations.

###### gtk_accessible_update_state

Updates a list of accessible states.

###### gtk_accessible_update_state_value

Updates an array of accessible states.

##### Methods inherited from GtkBuildable (1)

###### gtk_buildable_get_buildable_id

Gets the ID of the `buildable` object.

##### Methods inherited from GtkOrientable (2)

###### gtk_orientable_get_orientation

Retrieves the orientation of the `orientable`.

###### gtk_orientable_set_orientation

Sets the orientation of the `orientable`.

#### Properties

###### Panel.Frame:closeable

No description available.

###### Panel.Frame:empty

No description available.

###### Panel.Frame:placeholder

No description available.

###### Panel.Frame:visible-child

No description available.

##### Properties inherited from GtkWidget (35)

###### Gtk.Widget:can-focus

Whether the widget or any of its descendents can accept the input focus.

###### Gtk.Widget:can-target

Whether the widget can receive pointer events.

###### Gtk.Widget:css-classes

A list of css classes applied to this widget.

###### Gtk.Widget:css-name

The name of this widget in the CSS tree.

###### Gtk.Widget:cursor

The cursor used by `widget`.

###### Gtk.Widget:focus-on-click

Whether the widget should grab focus when it is clicked with the mouse.

###### Gtk.Widget:focusable

Whether this widget itself will accept the input focus.

###### Gtk.Widget:halign

How to distribute horizontal space if widget gets extra space.

###### Gtk.Widget:has-default

Whether the widget is the default widget.

###### Gtk.Widget:has-focus

Whether the widget has the input focus.

###### Gtk.Widget:has-tooltip

Enables or disables the emission of the `GtkWidget::query-tooltip` signal on `widget`.

###### Gtk.Widget:height-request

Overrides for height request of the widget.

###### Gtk.Widget:hexpand

Whether to expand horizontally.

###### Gtk.Widget:hexpand-set

Whether to use the `hexpand` property.

###### Gtk.Widget:layout-manager

The `GtkLayoutManager` instance to use to compute the preferred size of the widget, and allocate its children.

###### Gtk.Widget:limit-events

Makes this widget act like a modal dialog, with respect to event delivery.

###### Gtk.Widget:margin-bottom

Margin on bottom side of widget.

###### Gtk.Widget:margin-end

Margin on end of widget, horizontally.

###### Gtk.Widget:margin-start

Margin on start of widget, horizontally.

###### Gtk.Widget:margin-top

Margin on top side of widget.

###### Gtk.Widget:name

The name of the widget.

###### Gtk.Widget:opacity

The requested opacity of the widget.

###### Gtk.Widget:overflow

How content outside the widget’s content area is treated.

###### Gtk.Widget:parent

The parent widget of this widget.

###### Gtk.Widget:receives-default

Whether the widget will receive the default action when it is focused.

###### Gtk.Widget:root

The `GtkRoot` widget of the widget tree containing this widget.

###### Gtk.Widget:scale-factor

The scale factor of the widget.

###### Gtk.Widget:sensitive

Whether the widget responds to input.

###### Gtk.Widget:tooltip-markup

Sets the text of tooltip to be the given string, which is marked up with Pango markup.

###### Gtk.Widget:tooltip-text

Sets the text of tooltip to be the given string.

###### Gtk.Widget:valign

How to distribute vertical space if widget gets extra space.

###### Gtk.Widget:vexpand

Whether to expand vertically.

###### Gtk.Widget:vexpand-set

Whether to use the `vexpand` property.

###### Gtk.Widget:visible

Whether the widget is visible.

###### Gtk.Widget:width-request

Overrides for width request of the widget.

##### Properties inherited from GtkAccessible (1)

###### Gtk.Accessible:accessible-role

The accessible role of the given `GtkAccessible` implementation.

##### Properties inherited from GtkOrientable (1)

###### Gtk.Orientable:orientation

The orientation of the orientable.

#### Signals

###### Panel.Frame::adopt-widget

This signal is emitted when the frame should decide if it can adopt a `PanelWidget` dropped on the frame.

since: 1.2

###### Panel.Frame::page-closed

This signal is emitted when the page widget will be closed.

since: 1.2

##### Signals inherited from GtkWidget (13)

###### GtkWidget::destroy

Signals that all holders of a reference to the widget should release the reference that they hold.

###### GtkWidget::direction-changed

Emitted when the text direction of a widget changes.

###### GtkWidget::hide

Emitted when `widget` is hidden.

###### GtkWidget::keynav-failed

Emitted if keyboard navigation fails.

###### GtkWidget::map

Emitted when `widget` is going to be mapped.

###### GtkWidget::mnemonic-activate

Emitted when a widget is activated via a mnemonic.

###### GtkWidget::move-focus

Emitted when the focus is moved.

###### GtkWidget::query-tooltip

Emitted when the widget’s tooltip is about to be shown.

###### GtkWidget::realize

Emitted when `widget` is associated with a `GdkSurface`.

###### GtkWidget::show

Emitted when `widget` is shown.

###### GtkWidget::state-flags-changed

Emitted when the widget state changes.

###### GtkWidget::unmap

Emitted when `widget` is going to be unmapped.

###### GtkWidget::unrealize

Emitted when the `GdkSurface` associated with `widget` is destroyed.

##### Signals inherited from GObject (1)

###### GObject::notify

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.

#### Class structure

    struct PanelFrameClass {
      GtkWidgetClass parent_class;
      void (* page_closed) (
        PanelFrame* self,
        PanelWidget* widget
      );
      gboolean (* adopt_widget) (
        PanelFrame* self,
        PanelWidget* widget
      );

    }

No description available.

###### Class members

`parent_class: GtkWidgetClass`

  No description available.

`page_closed: void (* page_closed) ( PanelFrame* self, PanelWidget* widget )`

  No description available.

`adopt_widget: gboolean (* adopt_widget) ( PanelFrame* self, PanelWidget* widget )`

  No description available.

#### Virtual methods

###### Panel.FrameClass.adopt_widget

No description available.

###### Panel.FrameClass.page_closed

No description available.