// This file was generated by gir (https://github.com/gtk-rs/gir)
// from gir-files (https://github.com/gtk-rs/gir-files)
// DO NOT EDIT

use crate::Actionable;
use crate::Align;
use crate::Bin;
use crate::Buildable;
use crate::CheckMenuItem;
use crate::Container;
use crate::Menu;
use crate::MenuItem;
use crate::ResizeMode;
use crate::Widget;
use glib::object::Cast;
use glib::object::IsA;
use glib::signal::connect_raw;
use glib::signal::SignalHandlerId;
use glib::translate::*;
use glib::StaticType;
use glib::ToValue;
use std::boxed::Box as Box_;
use std::fmt;
use std::mem::transmute;

glib::wrapper! {
    /// A radio menu item is a check menu item that belongs to a group. At each
    /// instant exactly one of the radio menu items from a group is selected.
    ///
    /// The group list does not need to be freed, as each [`RadioMenuItem`][crate::RadioMenuItem] will
    /// remove itself and its list item when it is destroyed.
    ///
    /// The correct way to create a group of radio menu items is approximatively
    /// this:
    ///
    /// ## How to create a group of radio menu items.
    ///
    ///
    ///
    /// **⚠️ The following code is in C ⚠️**
    ///
    /// ```C
    /// GSList *group = NULL;
    /// GtkWidget *item;
    /// gint i;
    ///
    /// for (i = 0; i < 5; i++)
    /// {
    ///   item = gtk_radio_menu_item_new_with_label (group, "This is an example");
    ///   group = gtk_radio_menu_item_get_group (GTK_RADIO_MENU_ITEM (item));
    ///   if (i == 1)
    ///     gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (item), TRUE);
    /// }
    /// ```
    ///
    /// # CSS nodes
    ///
    ///
    ///
    /// **⚠️ The following code is in plain ⚠️**
    ///
    /// ```plain
    /// menuitem
    /// ├── radio.left
    /// ╰── <child>
    /// ```
    ///
    /// GtkRadioMenuItem has a main CSS node with name menuitem, and a subnode
    /// with name radio, which gets the .left or .right style class.
    ///
    /// # Implements
    ///
    /// [`RadioMenuItemExt`][trait@crate::prelude::RadioMenuItemExt], [`CheckMenuItemExt`][trait@crate::prelude::CheckMenuItemExt], [`GtkMenuItemExt`][trait@crate::prelude::GtkMenuItemExt], [`BinExt`][trait@crate::prelude::BinExt], [`ContainerExt`][trait@crate::prelude::ContainerExt], [`WidgetExt`][trait@crate::prelude::WidgetExt], [`trait@glib::ObjectExt`], [`BuildableExt`][trait@crate::prelude::BuildableExt], [`ActionableExt`][trait@crate::prelude::ActionableExt], [`ContainerExtManual`][trait@crate::prelude::ContainerExtManual], [`WidgetExtManual`][trait@crate::prelude::WidgetExtManual], [`BuildableExtManual`][trait@crate::prelude::BuildableExtManual]
    #[doc(alias = "GtkRadioMenuItem")]
    pub struct RadioMenuItem(Object<ffi::GtkRadioMenuItem, ffi::GtkRadioMenuItemClass>) @extends CheckMenuItem, MenuItem, Bin, Container, Widget, @implements Buildable, Actionable;

    match fn {
        type_ => || ffi::gtk_radio_menu_item_get_type(),
    }
}

impl RadioMenuItem {
    pub const NONE: Option<&'static RadioMenuItem> = None;

    /// Creates a new [`RadioMenuItem`][crate::RadioMenuItem] adding it to the same group as `group`.
    /// ## `group`
    /// An existing [`RadioMenuItem`][crate::RadioMenuItem]
    ///
    /// # Returns
    ///
    /// The new [`RadioMenuItem`][crate::RadioMenuItem]
    #[doc(alias = "gtk_radio_menu_item_new_from_widget")]
    #[doc(alias = "new_from_widget")]
    pub fn from_widget(group: &impl IsA<RadioMenuItem>) -> RadioMenuItem {
        skip_assert_initialized!();
        unsafe {
            Widget::from_glib_none(ffi::gtk_radio_menu_item_new_from_widget(
                group.as_ref().to_glib_none().0,
            ))
            .unsafe_cast()
        }
    }

    /// Creates a new GtkRadioMenuItem whose child is a simple GtkLabel.
    /// The new [`RadioMenuItem`][crate::RadioMenuItem] is added to the same group as `group`.
    /// ## `group`
    /// an existing [`RadioMenuItem`][crate::RadioMenuItem]
    /// ## `label`
    /// the text for the label
    ///
    /// # Returns
    ///
    /// The new [`RadioMenuItem`][crate::RadioMenuItem]
    #[doc(alias = "gtk_radio_menu_item_new_with_label_from_widget")]
    #[doc(alias = "new_with_label_from_widget")]
    pub fn with_label_from_widget(
        group: &impl IsA<RadioMenuItem>,
        label: Option<&str>,
    ) -> RadioMenuItem {
        skip_assert_initialized!();
        unsafe {
            Widget::from_glib_none(ffi::gtk_radio_menu_item_new_with_label_from_widget(
                group.as_ref().to_glib_none().0,
                label.to_glib_none().0,
            ))
            .unsafe_cast()
        }
    }

    /// Creates a new GtkRadioMenuItem containing a label. The label will be
    /// created using [`Label::with_mnemonic()`][crate::Label::with_mnemonic()], so underscores in label
    /// indicate the mnemonic for the menu item.
    ///
    /// The new [`RadioMenuItem`][crate::RadioMenuItem] is added to the same group as `group`.
    /// ## `group`
    /// An existing [`RadioMenuItem`][crate::RadioMenuItem]
    /// ## `label`
    /// the text of the button, with an underscore in front of the
    ///  mnemonic character
    ///
    /// # Returns
    ///
    /// The new [`RadioMenuItem`][crate::RadioMenuItem]
    #[doc(alias = "gtk_radio_menu_item_new_with_mnemonic_from_widget")]
    #[doc(alias = "new_with_mnemonic_from_widget")]
    pub fn with_mnemonic_from_widget(
        group: &impl IsA<RadioMenuItem>,
        label: Option<&str>,
    ) -> RadioMenuItem {
        skip_assert_initialized!();
        unsafe {
            Widget::from_glib_none(ffi::gtk_radio_menu_item_new_with_mnemonic_from_widget(
                group.as_ref().to_glib_none().0,
                label.to_glib_none().0,
            ))
            .unsafe_cast()
        }
    }

    // rustdoc-stripper-ignore-next
    /// Creates a new builder-pattern struct instance to construct [`RadioMenuItem`] objects.
    ///
    /// This method returns an instance of [`RadioMenuItemBuilder`](crate::builders::RadioMenuItemBuilder) which can be used to create [`RadioMenuItem`] objects.
    pub fn builder() -> RadioMenuItemBuilder {
        RadioMenuItemBuilder::default()
    }
}

#[derive(Clone, Default)]
// rustdoc-stripper-ignore-next
/// A [builder-pattern] type to construct [`RadioMenuItem`] objects.
///
/// [builder-pattern]: https://doc.rust-lang.org/1.0.0/style/ownership/builders.html
#[must_use = "The builder must be built to be used"]
pub struct RadioMenuItemBuilder {
    active: Option<bool>,
    draw_as_radio: Option<bool>,
    inconsistent: Option<bool>,
    accel_path: Option<String>,
    label: Option<String>,
    right_justified: Option<bool>,
    submenu: Option<Menu>,
    use_underline: Option<bool>,
    border_width: Option<u32>,
    child: Option<Widget>,
    resize_mode: Option<ResizeMode>,
    app_paintable: Option<bool>,
    can_default: Option<bool>,
    can_focus: Option<bool>,
    events: Option<gdk::EventMask>,
    expand: Option<bool>,
    focus_on_click: Option<bool>,
    halign: Option<Align>,
    has_default: Option<bool>,
    has_focus: Option<bool>,
    has_tooltip: Option<bool>,
    height_request: Option<i32>,
    hexpand: Option<bool>,
    hexpand_set: Option<bool>,
    is_focus: Option<bool>,
    margin: Option<i32>,
    margin_bottom: Option<i32>,
    margin_end: Option<i32>,
    margin_start: Option<i32>,
    margin_top: Option<i32>,
    name: Option<String>,
    no_show_all: Option<bool>,
    opacity: Option<f64>,
    parent: Option<Container>,
    receives_default: Option<bool>,
    sensitive: Option<bool>,
    tooltip_markup: Option<String>,
    tooltip_text: Option<String>,
    valign: Option<Align>,
    vexpand: Option<bool>,
    vexpand_set: Option<bool>,
    visible: Option<bool>,
    width_request: Option<i32>,
    action_name: Option<String>,
    action_target: Option<glib::Variant>,
}

impl RadioMenuItemBuilder {
    // rustdoc-stripper-ignore-next
    /// Create a new [`RadioMenuItemBuilder`].
    pub fn new() -> Self {
        Self::default()
    }

    // rustdoc-stripper-ignore-next
    /// Build the [`RadioMenuItem`].
    #[must_use = "Building the object from the builder is usually expensive and is not expected to have side effects"]
    pub fn build(self) -> RadioMenuItem {
        let mut properties: Vec<(&str, &dyn ToValue)> = vec![];
        if let Some(ref active) = self.active {
            properties.push(("active", active));
        }
        if let Some(ref draw_as_radio) = self.draw_as_radio {
            properties.push(("draw-as-radio", draw_as_radio));
        }
        if let Some(ref inconsistent) = self.inconsistent {
            properties.push(("inconsistent", inconsistent));
        }
        if let Some(ref accel_path) = self.accel_path {
            properties.push(("accel-path", accel_path));
        }
        if let Some(ref label) = self.label {
            properties.push(("label", label));
        }
        if let Some(ref right_justified) = self.right_justified {
            properties.push(("right-justified", right_justified));
        }
        if let Some(ref submenu) = self.submenu {
            properties.push(("submenu", submenu));
        }
        if let Some(ref use_underline) = self.use_underline {
            properties.push(("use-underline", use_underline));
        }
        if let Some(ref border_width) = self.border_width {
            properties.push(("border-width", border_width));
        }
        if let Some(ref child) = self.child {
            properties.push(("child", child));
        }
        if let Some(ref resize_mode) = self.resize_mode {
            properties.push(("resize-mode", resize_mode));
        }
        if let Some(ref app_paintable) = self.app_paintable {
            properties.push(("app-paintable", app_paintable));
        }
        if let Some(ref can_default) = self.can_default {
            properties.push(("can-default", can_default));
        }
        if let Some(ref can_focus) = self.can_focus {
            properties.push(("can-focus", can_focus));
        }
        if let Some(ref events) = self.events {
            properties.push(("events", events));
        }
        if let Some(ref expand) = self.expand {
            properties.push(("expand", expand));
        }
        if let Some(ref focus_on_click) = self.focus_on_click {
            properties.push(("focus-on-click", focus_on_click));
        }
        if let Some(ref halign) = self.halign {
            properties.push(("halign", halign));
        }
        if let Some(ref has_default) = self.has_default {
            properties.push(("has-default", has_default));
        }
        if let Some(ref has_focus) = self.has_focus {
            properties.push(("has-focus", has_focus));
        }
        if let Some(ref has_tooltip) = self.has_tooltip {
            properties.push(("has-tooltip", has_tooltip));
        }
        if let Some(ref height_request) = self.height_request {
            properties.push(("height-request", height_request));
        }
        if let Some(ref hexpand) = self.hexpand {
            properties.push(("hexpand", hexpand));
        }
        if let Some(ref hexpand_set) = self.hexpand_set {
            properties.push(("hexpand-set", hexpand_set));
        }
        if let Some(ref is_focus) = self.is_focus {
            properties.push(("is-focus", is_focus));
        }
        if let Some(ref margin) = self.margin {
            properties.push(("margin", margin));
        }
        if let Some(ref margin_bottom) = self.margin_bottom {
            properties.push(("margin-bottom", margin_bottom));
        }
        if let Some(ref margin_end) = self.margin_end {
            properties.push(("margin-end", margin_end));
        }
        if let Some(ref margin_start) = self.margin_start {
            properties.push(("margin-start", margin_start));
        }
        if let Some(ref margin_top) = self.margin_top {
            properties.push(("margin-top", margin_top));
        }
        if let Some(ref name) = self.name {
            properties.push(("name", name));
        }
        if let Some(ref no_show_all) = self.no_show_all {
            properties.push(("no-show-all", no_show_all));
        }
        if let Some(ref opacity) = self.opacity {
            properties.push(("opacity", opacity));
        }
        if let Some(ref parent) = self.parent {
            properties.push(("parent", parent));
        }
        if let Some(ref receives_default) = self.receives_default {
            properties.push(("receives-default", receives_default));
        }
        if let Some(ref sensitive) = self.sensitive {
            properties.push(("sensitive", sensitive));
        }
        if let Some(ref tooltip_markup) = self.tooltip_markup {
            properties.push(("tooltip-markup", tooltip_markup));
        }
        if let Some(ref tooltip_text) = self.tooltip_text {
            properties.push(("tooltip-text", tooltip_text));
        }
        if let Some(ref valign) = self.valign {
            properties.push(("valign", valign));
        }
        if let Some(ref vexpand) = self.vexpand {
            properties.push(("vexpand", vexpand));
        }
        if let Some(ref vexpand_set) = self.vexpand_set {
            properties.push(("vexpand-set", vexpand_set));
        }
        if let Some(ref visible) = self.visible {
            properties.push(("visible", visible));
        }
        if let Some(ref width_request) = self.width_request {
            properties.push(("width-request", width_request));
        }
        if let Some(ref action_name) = self.action_name {
            properties.push(("action-name", action_name));
        }
        if let Some(ref action_target) = self.action_target {
            properties.push(("action-target", action_target));
        }
        glib::Object::new::<RadioMenuItem>(&properties)
    }

    pub fn active(mut self, active: bool) -> Self {
        self.active = Some(active);
        self
    }

    pub fn draw_as_radio(mut self, draw_as_radio: bool) -> Self {
        self.draw_as_radio = Some(draw_as_radio);
        self
    }

    pub fn inconsistent(mut self, inconsistent: bool) -> Self {
        self.inconsistent = Some(inconsistent);
        self
    }

    /// Sets the accelerator path of the menu item, through which runtime
    /// changes of the menu item's accelerator caused by the user can be
    /// identified and saved to persistant storage.
    pub fn accel_path(mut self, accel_path: &str) -> Self {
        self.accel_path = Some(accel_path.to_string());
        self
    }

    /// The text for the child label.
    pub fn label(mut self, label: &str) -> Self {
        self.label = Some(label.to_string());
        self
    }

    /// Sets whether the menu item appears justified
    /// at the right side of a menu bar.
    pub fn right_justified(mut self, right_justified: bool) -> Self {
        self.right_justified = Some(right_justified);
        self
    }

    /// The submenu attached to the menu item, or [`None`] if it has none.
    pub fn submenu(mut self, submenu: &impl IsA<Menu>) -> Self {
        self.submenu = Some(submenu.clone().upcast());
        self
    }

    /// [`true`] if underlines in the text indicate mnemonics.
    pub fn use_underline(mut self, use_underline: bool) -> Self {
        self.use_underline = Some(use_underline);
        self
    }

    pub fn border_width(mut self, border_width: u32) -> Self {
        self.border_width = Some(border_width);
        self
    }

    pub fn child(mut self, child: &impl IsA<Widget>) -> Self {
        self.child = Some(child.clone().upcast());
        self
    }

    pub fn resize_mode(mut self, resize_mode: ResizeMode) -> Self {
        self.resize_mode = Some(resize_mode);
        self
    }

    pub fn app_paintable(mut self, app_paintable: bool) -> Self {
        self.app_paintable = Some(app_paintable);
        self
    }

    pub fn can_default(mut self, can_default: bool) -> Self {
        self.can_default = Some(can_default);
        self
    }

    pub fn can_focus(mut self, can_focus: bool) -> Self {
        self.can_focus = Some(can_focus);
        self
    }

    pub fn events(mut self, events: gdk::EventMask) -> Self {
        self.events = Some(events);
        self
    }

    /// Whether to expand in both directions. Setting this sets both `property::Widget::hexpand` and `property::Widget::vexpand`
    pub fn expand(mut self, expand: bool) -> Self {
        self.expand = Some(expand);
        self
    }

    /// Whether the widget should grab focus when it is clicked with the mouse.
    ///
    /// This property is only relevant for widgets that can take focus.
    ///
    /// Before 3.20, several widgets (GtkButton, GtkFileChooserButton,
    /// GtkComboBox) implemented this property individually.
    pub fn focus_on_click(mut self, focus_on_click: bool) -> Self {
        self.focus_on_click = Some(focus_on_click);
        self
    }

    /// How to distribute horizontal space if widget gets extra space, see [`Align`][crate::Align]
    pub fn halign(mut self, halign: Align) -> Self {
        self.halign = Some(halign);
        self
    }

    pub fn has_default(mut self, has_default: bool) -> Self {
        self.has_default = Some(has_default);
        self
    }

    pub fn has_focus(mut self, has_focus: bool) -> Self {
        self.has_focus = Some(has_focus);
        self
    }

    /// Enables or disables the emission of `signal::Widget::query-tooltip` on `widget`.
    /// A value of [`true`] indicates that `widget` can have a tooltip, in this case
    /// the widget will be queried using `signal::Widget::query-tooltip` to determine
    /// whether it will provide a tooltip or not.
    ///
    /// Note that setting this property to [`true`] for the first time will change
    /// the event masks of the GdkWindows of this widget to include leave-notify
    /// and motion-notify events. This cannot and will not be undone when the
    /// property is set to [`false`] again.
    pub fn has_tooltip(mut self, has_tooltip: bool) -> Self {
        self.has_tooltip = Some(has_tooltip);
        self
    }

    pub fn height_request(mut self, height_request: i32) -> Self {
        self.height_request = Some(height_request);
        self
    }

    /// Whether to expand horizontally. See [`WidgetExt::set_hexpand()`][crate::prelude::WidgetExt::set_hexpand()].
    pub fn hexpand(mut self, hexpand: bool) -> Self {
        self.hexpand = Some(hexpand);
        self
    }

    /// Whether to use the `property::Widget::hexpand` property. See [`WidgetExt::is_hexpand_set()`][crate::prelude::WidgetExt::is_hexpand_set()].
    pub fn hexpand_set(mut self, hexpand_set: bool) -> Self {
        self.hexpand_set = Some(hexpand_set);
        self
    }

    pub fn is_focus(mut self, is_focus: bool) -> Self {
        self.is_focus = Some(is_focus);
        self
    }

    /// Sets all four sides' margin at once. If read, returns max
    /// margin on any side.
    pub fn margin(mut self, margin: i32) -> Self {
        self.margin = Some(margin);
        self
    }

    /// Margin on bottom side of widget.
    ///
    /// This property adds margin outside of the widget's normal size
    /// request, the margin will be added in addition to the size from
    /// [`WidgetExt::set_size_request()`][crate::prelude::WidgetExt::set_size_request()] for example.
    pub fn margin_bottom(mut self, margin_bottom: i32) -> Self {
        self.margin_bottom = Some(margin_bottom);
        self
    }

    /// Margin on end of widget, horizontally. This property supports
    /// left-to-right and right-to-left text directions.
    ///
    /// This property adds margin outside of the widget's normal size
    /// request, the margin will be added in addition to the size from
    /// [`WidgetExt::set_size_request()`][crate::prelude::WidgetExt::set_size_request()] for example.
    pub fn margin_end(mut self, margin_end: i32) -> Self {
        self.margin_end = Some(margin_end);
        self
    }

    /// Margin on start of widget, horizontally. This property supports
    /// left-to-right and right-to-left text directions.
    ///
    /// This property adds margin outside of the widget's normal size
    /// request, the margin will be added in addition to the size from
    /// [`WidgetExt::set_size_request()`][crate::prelude::WidgetExt::set_size_request()] for example.
    pub fn margin_start(mut self, margin_start: i32) -> Self {
        self.margin_start = Some(margin_start);
        self
    }

    /// Margin on top side of widget.
    ///
    /// This property adds margin outside of the widget's normal size
    /// request, the margin will be added in addition to the size from
    /// [`WidgetExt::set_size_request()`][crate::prelude::WidgetExt::set_size_request()] for example.
    pub fn margin_top(mut self, margin_top: i32) -> Self {
        self.margin_top = Some(margin_top);
        self
    }

    pub fn name(mut self, name: &str) -> Self {
        self.name = Some(name.to_string());
        self
    }

    pub fn no_show_all(mut self, no_show_all: bool) -> Self {
        self.no_show_all = Some(no_show_all);
        self
    }

    /// The requested opacity of the widget. See [`WidgetExt::set_opacity()`][crate::prelude::WidgetExt::set_opacity()] for
    /// more details about window opacity.
    ///
    /// Before 3.8 this was only available in GtkWindow
    pub fn opacity(mut self, opacity: f64) -> Self {
        self.opacity = Some(opacity);
        self
    }

    pub fn parent(mut self, parent: &impl IsA<Container>) -> Self {
        self.parent = Some(parent.clone().upcast());
        self
    }

    pub fn receives_default(mut self, receives_default: bool) -> Self {
        self.receives_default = Some(receives_default);
        self
    }

    pub fn sensitive(mut self, sensitive: bool) -> Self {
        self.sensitive = Some(sensitive);
        self
    }

    /// Sets the text of tooltip to be the given string, which is marked up
    /// with the [Pango text markup language][PangoMarkupFormat].
    /// Also see [`Tooltip::set_markup()`][crate::Tooltip::set_markup()].
    ///
    /// This is a convenience property which will take care of getting the
    /// tooltip shown if the given string is not [`None`]: `property::Widget::has-tooltip`
    /// will automatically be set to [`true`] and there will be taken care of
    /// `signal::Widget::query-tooltip` in the default signal handler.
    ///
    /// Note that if both `property::Widget::tooltip-text` and `property::Widget::tooltip-markup`
    /// are set, the last one wins.
    pub fn tooltip_markup(mut self, tooltip_markup: &str) -> Self {
        self.tooltip_markup = Some(tooltip_markup.to_string());
        self
    }

    /// Sets the text of tooltip to be the given string.
    ///
    /// Also see [`Tooltip::set_text()`][crate::Tooltip::set_text()].
    ///
    /// This is a convenience property which will take care of getting the
    /// tooltip shown if the given string is not [`None`]: `property::Widget::has-tooltip`
    /// will automatically be set to [`true`] and there will be taken care of
    /// `signal::Widget::query-tooltip` in the default signal handler.
    ///
    /// Note that if both `property::Widget::tooltip-text` and `property::Widget::tooltip-markup`
    /// are set, the last one wins.
    pub fn tooltip_text(mut self, tooltip_text: &str) -> Self {
        self.tooltip_text = Some(tooltip_text.to_string());
        self
    }

    /// How to distribute vertical space if widget gets extra space, see [`Align`][crate::Align]
    pub fn valign(mut self, valign: Align) -> Self {
        self.valign = Some(valign);
        self
    }

    /// Whether to expand vertically. See [`WidgetExt::set_vexpand()`][crate::prelude::WidgetExt::set_vexpand()].
    pub fn vexpand(mut self, vexpand: bool) -> Self {
        self.vexpand = Some(vexpand);
        self
    }

    /// Whether to use the `property::Widget::vexpand` property. See [`WidgetExt::is_vexpand_set()`][crate::prelude::WidgetExt::is_vexpand_set()].
    pub fn vexpand_set(mut self, vexpand_set: bool) -> Self {
        self.vexpand_set = Some(vexpand_set);
        self
    }

    pub fn visible(mut self, visible: bool) -> Self {
        self.visible = Some(visible);
        self
    }

    pub fn width_request(mut self, width_request: i32) -> Self {
        self.width_request = Some(width_request);
        self
    }

    pub fn action_name(mut self, action_name: &str) -> Self {
        self.action_name = Some(action_name.to_string());
        self
    }

    pub fn action_target(mut self, action_target: &glib::Variant) -> Self {
        self.action_target = Some(action_target.clone());
        self
    }
}

/// Trait containing all [`struct@RadioMenuItem`] methods.
///
/// # Implementors
///
/// [`RadioMenuItem`][struct@crate::RadioMenuItem]
pub trait RadioMenuItemExt: 'static {
    /// Returns the group to which the radio menu item belongs, as a `GList` of
    /// [`RadioMenuItem`][crate::RadioMenuItem]. The list belongs to GTK+ and should not be freed.
    ///
    /// # Returns
    ///
    /// the group
    ///  of `self`
    #[doc(alias = "gtk_radio_menu_item_get_group")]
    #[doc(alias = "get_group")]
    fn group(&self) -> Vec<RadioMenuItem>;

    /// Joins a [`RadioMenuItem`][crate::RadioMenuItem] object to the group of another [`RadioMenuItem`][crate::RadioMenuItem]
    /// object.
    ///
    /// This function should be used by language bindings to avoid the memory
    /// manangement of the opaque `GSList` of [`group()`][Self::group()]
    /// and `gtk_radio_menu_item_set_group()`.
    ///
    /// A common way to set up a group of [`RadioMenuItem`][crate::RadioMenuItem] instances is:
    ///
    ///
    /// ```text
    ///   GtkRadioMenuItem *last_item = NULL;
    ///
    ///   while ( ...more items to add... )
    ///     {
    ///       GtkRadioMenuItem *radio_item;
    ///
    ///       radio_item = gtk_radio_menu_item_new (...);
    ///
    ///       gtk_radio_menu_item_join_group (radio_item, last_item);
    ///       last_item = radio_item;
    ///     }
    /// ```
    /// ## `group_source`
    /// a [`RadioMenuItem`][crate::RadioMenuItem] whose group we are
    ///  joining, or [`None`] to remove the `self` from its current
    ///  group
    #[doc(alias = "gtk_radio_menu_item_join_group")]
    fn join_group(&self, group_source: Option<&impl IsA<RadioMenuItem>>);

    #[doc(alias = "group-changed")]
    fn connect_group_changed<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;
}

impl<O: IsA<RadioMenuItem>> RadioMenuItemExt for O {
    fn group(&self) -> Vec<RadioMenuItem> {
        unsafe {
            FromGlibPtrContainer::from_glib_none(ffi::gtk_radio_menu_item_get_group(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn join_group(&self, group_source: Option<&impl IsA<RadioMenuItem>>) {
        unsafe {
            ffi::gtk_radio_menu_item_join_group(
                self.as_ref().to_glib_none().0,
                group_source.map(|p| p.as_ref()).to_glib_none().0,
            );
        }
    }

    fn connect_group_changed<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn group_changed_trampoline<
            P: IsA<RadioMenuItem>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkRadioMenuItem,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(RadioMenuItem::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"group-changed\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    group_changed_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }
}

impl fmt::Display for RadioMenuItem {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        f.write_str("RadioMenuItem")
    }
}