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

use crate::Accessible;
use crate::AccessibleRole;
use crate::Align;
use crate::Buildable;
use crate::ConstraintTarget;
use crate::FontChooser;
use crate::FontChooserLevel;
use crate::LayoutManager;
use crate::Overflow;
use crate::Widget;
use glib::object::Cast;
use glib::object::IsA;
#[cfg(any(feature = "v4_4", feature = "dox"))]
#[cfg_attr(feature = "dox", doc(cfg(feature = "v4_4")))]
use glib::object::ObjectExt;
use glib::object::ObjectType as ObjectType_;
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! {
    /// The [`FontButton`][crate::FontButton] allows to open a font chooser dialog to change
    /// the font.
    ///
    /// ![An example GtkFontButton](font-button.png)
    ///
    /// It is suitable widget for selecting a font in a preference dialog.
    ///
    /// # CSS nodes
    ///
    /// ```text
    /// fontbutton
    /// ╰── button.font
    ///     ╰── [content]
    /// ```
    ///
    /// [`FontButton`][crate::FontButton] has a single CSS node with name fontbutton which
    /// contains a button node with the .font style class.
    ///
    /// # Implements
    ///
    /// [`WidgetExt`][trait@crate::prelude::WidgetExt], [`trait@glib::ObjectExt`], [`AccessibleExt`][trait@crate::prelude::AccessibleExt], [`BuildableExt`][trait@crate::prelude::BuildableExt], [`ConstraintTargetExt`][trait@crate::prelude::ConstraintTargetExt], [`FontChooserExt`][trait@crate::prelude::FontChooserExt], [`WidgetExtManual`][trait@crate::prelude::WidgetExtManual], [`AccessibleExtManual`][trait@crate::prelude::AccessibleExtManual], [`FontChooserExtManual`][trait@crate::prelude::FontChooserExtManual]
    #[doc(alias = "GtkFontButton")]
    pub struct FontButton(Object<ffi::GtkFontButton>) @extends Widget, @implements Accessible, Buildable, ConstraintTarget, FontChooser;

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

impl FontButton {
    /// Creates a new font picker widget.
    ///
    /// # Returns
    ///
    /// a new font picker widget.
    #[doc(alias = "gtk_font_button_new")]
    pub fn new() -> FontButton {
        assert_initialized_main_thread!();
        unsafe { Widget::from_glib_none(ffi::gtk_font_button_new()).unsafe_cast() }
    }

    /// Creates a new font picker widget showing the given font.
    /// ## `fontname`
    /// Name of font to display in font chooser dialog
    ///
    /// # Returns
    ///
    /// a new font picker widget.
    #[doc(alias = "gtk_font_button_new_with_font")]
    #[doc(alias = "new_with_font")]
    pub fn with_font(fontname: &str) -> FontButton {
        assert_initialized_main_thread!();
        unsafe {
            Widget::from_glib_none(ffi::gtk_font_button_new_with_font(
                fontname.to_glib_none().0,
            ))
            .unsafe_cast()
        }
    }

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

    /// Gets whether the dialog is modal.
    ///
    /// # Returns
    ///
    /// [`true`] if the dialog is modal
    #[doc(alias = "gtk_font_button_get_modal")]
    #[doc(alias = "get_modal")]
    pub fn is_modal(&self) -> bool {
        unsafe { from_glib(ffi::gtk_font_button_get_modal(self.to_glib_none().0)) }
    }

    /// Retrieves the title of the font chooser dialog.
    ///
    /// # Returns
    ///
    /// an internal copy of the title string
    ///  which must not be freed.
    #[doc(alias = "gtk_font_button_get_title")]
    #[doc(alias = "get_title")]
    pub fn title(&self) -> Option<glib::GString> {
        unsafe { from_glib_none(ffi::gtk_font_button_get_title(self.to_glib_none().0)) }
    }

    /// Returns whether the selected font is used in the label.
    ///
    /// # Returns
    ///
    /// whether the selected font is used in the label.
    #[doc(alias = "gtk_font_button_get_use_font")]
    #[doc(alias = "get_use_font")]
    pub fn uses_font(&self) -> bool {
        unsafe { from_glib(ffi::gtk_font_button_get_use_font(self.to_glib_none().0)) }
    }

    /// Returns whether the selected size is used in the label.
    ///
    /// # Returns
    ///
    /// whether the selected size is used in the label.
    #[doc(alias = "gtk_font_button_get_use_size")]
    #[doc(alias = "get_use_size")]
    pub fn uses_size(&self) -> bool {
        unsafe { from_glib(ffi::gtk_font_button_get_use_size(self.to_glib_none().0)) }
    }

    /// Sets whether the dialog should be modal.
    /// ## `modal`
    /// [`true`] to make the dialog modal
    #[doc(alias = "gtk_font_button_set_modal")]
    pub fn set_modal(&self, modal: bool) {
        unsafe {
            ffi::gtk_font_button_set_modal(self.to_glib_none().0, modal.into_glib());
        }
    }

    /// Sets the title for the font chooser dialog.
    /// ## `title`
    /// a string containing the font chooser dialog title
    #[doc(alias = "gtk_font_button_set_title")]
    pub fn set_title(&self, title: &str) {
        unsafe {
            ffi::gtk_font_button_set_title(self.to_glib_none().0, title.to_glib_none().0);
        }
    }

    /// If `use_font` is [`true`], the font name will be written
    /// using the selected font.
    /// ## `use_font`
    /// If [`true`], font name will be written using font chosen.
    #[doc(alias = "gtk_font_button_set_use_font")]
    pub fn set_use_font(&self, use_font: bool) {
        unsafe {
            ffi::gtk_font_button_set_use_font(self.to_glib_none().0, use_font.into_glib());
        }
    }

    /// If `use_size` is [`true`], the font name will be written using
    /// the selected size.
    /// ## `use_size`
    /// If [`true`], font name will be written using the
    ///  selected size.
    #[doc(alias = "gtk_font_button_set_use_size")]
    pub fn set_use_size(&self, use_size: bool) {
        unsafe {
            ffi::gtk_font_button_set_use_size(self.to_glib_none().0, use_size.into_glib());
        }
    }

    /// Emitted to when the font button is activated.
    ///
    /// The `::activate` signal on [`FontButton`][crate::FontButton] is an action signal and
    /// emitting it causes the button to present its dialog.
    #[cfg(any(feature = "v4_4", feature = "dox"))]
    #[cfg_attr(feature = "dox", doc(cfg(feature = "v4_4")))]
    #[doc(alias = "activate")]
    pub fn connect_activate<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn activate_trampoline<F: Fn(&FontButton) + 'static>(
            this: *mut ffi::GtkFontButton,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this))
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"activate\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    activate_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[cfg(any(feature = "v4_4", feature = "dox"))]
    #[cfg_attr(feature = "dox", doc(cfg(feature = "v4_4")))]
    pub fn emit_activate(&self) {
        let _ = unsafe {
            glib::Object::from_glib_borrow(self.as_ptr() as *mut glib::gobject_ffi::GObject)
                .emit_by_name("activate", &[])
                .unwrap()
        };
    }

    /// Emitted when the user selects a font.
    ///
    /// When handling this signal, use [``FontChooserExt::font()``][crate::prelude::`FontChooserExt::font()`]
    /// to find out which font was just selected.
    ///
    /// Note that this signal is only emitted when the user changes the font.
    /// If you need to react to programmatic font changes as well, use
    /// the notify::font signal.
    #[doc(alias = "font-set")]
    pub fn connect_font_set<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn font_set_trampoline<F: Fn(&FontButton) + 'static>(
            this: *mut ffi::GtkFontButton,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this))
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"font-set\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    font_set_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "modal")]
    pub fn connect_modal_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_modal_trampoline<F: Fn(&FontButton) + 'static>(
            this: *mut ffi::GtkFontButton,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this))
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::modal\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_modal_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "title")]
    pub fn connect_title_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_title_trampoline<F: Fn(&FontButton) + 'static>(
            this: *mut ffi::GtkFontButton,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this))
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::title\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_title_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "use-font")]
    pub fn connect_use_font_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_use_font_trampoline<F: Fn(&FontButton) + 'static>(
            this: *mut ffi::GtkFontButton,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this))
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::use-font\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_use_font_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "use-size")]
    pub fn connect_use_size_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_use_size_trampoline<F: Fn(&FontButton) + 'static>(
            this: *mut ffi::GtkFontButton,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this))
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::use-size\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_use_size_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }
}

impl Default for FontButton {
    fn default() -> Self {
        Self::new()
    }
}

#[derive(Clone, Default)]
// rustdoc-stripper-ignore-next
/// A [builder-pattern] type to construct [`FontButton`] objects.
///
/// [builder-pattern]: https://doc.rust-lang.org/1.0.0/style/ownership/builders.html
pub struct FontButtonBuilder {
    modal: Option<bool>,
    title: Option<String>,
    use_font: Option<bool>,
    use_size: Option<bool>,
    can_focus: Option<bool>,
    can_target: Option<bool>,
    css_classes: Option<Vec<String>>,
    css_name: Option<String>,
    cursor: Option<gdk::Cursor>,
    focus_on_click: Option<bool>,
    focusable: Option<bool>,
    halign: Option<Align>,
    has_tooltip: Option<bool>,
    height_request: Option<i32>,
    hexpand: Option<bool>,
    hexpand_set: Option<bool>,
    layout_manager: Option<LayoutManager>,
    margin_bottom: Option<i32>,
    margin_end: Option<i32>,
    margin_start: Option<i32>,
    margin_top: Option<i32>,
    name: Option<String>,
    opacity: Option<f64>,
    overflow: Option<Overflow>,
    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>,
    accessible_role: Option<AccessibleRole>,
    font: Option<String>,
    font_desc: Option<pango::FontDescription>,
    language: Option<String>,
    level: Option<FontChooserLevel>,
    preview_text: Option<String>,
    show_preview_entry: Option<bool>,
}

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

    // rustdoc-stripper-ignore-next
    /// Build the [`FontButton`].
    pub fn build(self) -> FontButton {
        let mut properties: Vec<(&str, &dyn ToValue)> = vec![];
        if let Some(ref modal) = self.modal {
            properties.push(("modal", modal));
        }
        if let Some(ref title) = self.title {
            properties.push(("title", title));
        }
        if let Some(ref use_font) = self.use_font {
            properties.push(("use-font", use_font));
        }
        if let Some(ref use_size) = self.use_size {
            properties.push(("use-size", use_size));
        }
        if let Some(ref can_focus) = self.can_focus {
            properties.push(("can-focus", can_focus));
        }
        if let Some(ref can_target) = self.can_target {
            properties.push(("can-target", can_target));
        }
        if let Some(ref css_classes) = self.css_classes {
            properties.push(("css-classes", css_classes));
        }
        if let Some(ref css_name) = self.css_name {
            properties.push(("css-name", css_name));
        }
        if let Some(ref cursor) = self.cursor {
            properties.push(("cursor", cursor));
        }
        if let Some(ref focus_on_click) = self.focus_on_click {
            properties.push(("focus-on-click", focus_on_click));
        }
        if let Some(ref focusable) = self.focusable {
            properties.push(("focusable", focusable));
        }
        if let Some(ref halign) = self.halign {
            properties.push(("halign", halign));
        }
        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 layout_manager) = self.layout_manager {
            properties.push(("layout-manager", layout_manager));
        }
        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 opacity) = self.opacity {
            properties.push(("opacity", opacity));
        }
        if let Some(ref overflow) = self.overflow {
            properties.push(("overflow", overflow));
        }
        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 accessible_role) = self.accessible_role {
            properties.push(("accessible-role", accessible_role));
        }
        if let Some(ref font) = self.font {
            properties.push(("font", font));
        }
        if let Some(ref font_desc) = self.font_desc {
            properties.push(("font-desc", font_desc));
        }
        if let Some(ref language) = self.language {
            properties.push(("language", language));
        }
        if let Some(ref level) = self.level {
            properties.push(("level", level));
        }
        if let Some(ref preview_text) = self.preview_text {
            properties.push(("preview-text", preview_text));
        }
        if let Some(ref show_preview_entry) = self.show_preview_entry {
            properties.push(("show-preview-entry", show_preview_entry));
        }
        glib::Object::new::<FontButton>(&properties)
            .expect("Failed to create an instance of FontButton")
    }

    /// Whether the font chooser dialog should be modal.
    pub fn modal(mut self, modal: bool) -> Self {
        self.modal = Some(modal);
        self
    }

    /// The title of the font chooser dialog.
    pub fn title(mut self, title: &str) -> Self {
        self.title = Some(title.to_string());
        self
    }

    /// Whether the buttons label will be drawn in the selected font.
    pub fn use_font(mut self, use_font: bool) -> Self {
        self.use_font = Some(use_font);
        self
    }

    /// Whether the buttons label will use the selected font size.
    pub fn use_size(mut self, use_size: bool) -> Self {
        self.use_size = Some(use_size);
        self
    }

    /// Whether the widget or any of its descendents can accept
    /// the input focus.
    ///
    /// This property is meant to be set by widget implementations,
    /// typically in their instance init function.
    pub fn can_focus(mut self, can_focus: bool) -> Self {
        self.can_focus = Some(can_focus);
        self
    }

    /// Whether the widget can receive pointer events.
    pub fn can_target(mut self, can_target: bool) -> Self {
        self.can_target = Some(can_target);
        self
    }

    /// A list of css classes applied to this widget.
    pub fn css_classes(mut self, css_classes: Vec<String>) -> Self {
        self.css_classes = Some(css_classes);
        self
    }

    /// The name of this widget in the CSS tree.
    ///
    /// This property is meant to be set by widget implementations,
    /// typically in their instance init function.
    pub fn css_name(mut self, css_name: &str) -> Self {
        self.css_name = Some(css_name.to_string());
        self
    }

    /// The cursor used by `widget`.
    pub fn cursor(mut self, cursor: &gdk::Cursor) -> Self {
        self.cursor = Some(cursor.clone());
        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.
    pub fn focus_on_click(mut self, focus_on_click: bool) -> Self {
        self.focus_on_click = Some(focus_on_click);
        self
    }

    /// Whether this widget itself will accept the input focus.
    pub fn focusable(mut self, focusable: bool) -> Self {
        self.focusable = Some(focusable);
        self
    }

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

    /// Enables or disables the emission of the ::query-tooltip signal 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.
    pub fn has_tooltip(mut self, has_tooltip: bool) -> Self {
        self.has_tooltip = Some(has_tooltip);
        self
    }

    /// Override for height request of the widget.
    ///
    /// If this is -1, the natural request will be used.
    pub fn height_request(mut self, height_request: i32) -> Self {
        self.height_request = Some(height_request);
        self
    }

    /// Whether to expand horizontally.
    pub fn hexpand(mut self, hexpand: bool) -> Self {
        self.hexpand = Some(hexpand);
        self
    }

    /// Whether to use the `hexpand` property.
    pub fn hexpand_set(mut self, hexpand_set: bool) -> Self {
        self.hexpand_set = Some(hexpand_set);
        self
    }

    /// The [`LayoutManager`][crate::LayoutManager] instance to use to compute the preferred size
    /// of the widget, and allocate its children.
    ///
    /// This property is meant to be set by widget implementations,
    /// typically in their instance init function.
    pub fn layout_manager<P: IsA<LayoutManager>>(mut self, layout_manager: &P) -> Self {
        self.layout_manager = Some(layout_manager.clone().upcast());
        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
    }

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

    /// The requested opacity of the widget.
    pub fn opacity(mut self, opacity: f64) -> Self {
        self.opacity = Some(opacity);
        self
    }

    /// How content outside the widget's content area is treated.
    ///
    /// This property is meant to be set by widget implementations,
    /// typically in their instance init function.
    pub fn overflow(mut self, overflow: Overflow) -> Self {
        self.overflow = Some(overflow);
        self
    }

    /// Whether the widget will receive the default action when it is focused.
    pub fn receives_default(mut self, receives_default: bool) -> Self {
        self.receives_default = Some(receives_default);
        self
    }

    /// Whether the widget responds to input.
    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 Pango markup.
    ///
    /// 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.
    pub fn valign(mut self, valign: Align) -> Self {
        self.valign = Some(valign);
        self
    }

    /// Whether to expand vertically.
    pub fn vexpand(mut self, vexpand: bool) -> Self {
        self.vexpand = Some(vexpand);
        self
    }

    /// Whether to use the `vexpand` property.
    pub fn vexpand_set(mut self, vexpand_set: bool) -> Self {
        self.vexpand_set = Some(vexpand_set);
        self
    }

    /// Whether the widget is visible.
    pub fn visible(mut self, visible: bool) -> Self {
        self.visible = Some(visible);
        self
    }

    /// Override for width request of the widget.
    ///
    /// If this is -1, the natural request will be used.
    pub fn width_request(mut self, width_request: i32) -> Self {
        self.width_request = Some(width_request);
        self
    }

    /// The accessible role of the given [`Accessible`][crate::Accessible] implementation.
    ///
    /// The accessible role cannot be changed once set.
    pub fn accessible_role(mut self, accessible_role: AccessibleRole) -> Self {
        self.accessible_role = Some(accessible_role);
        self
    }

    /// The font description as a string, e.g. "Sans Italic 12".
    pub fn font(mut self, font: &str) -> Self {
        self.font = Some(font.to_string());
        self
    }

    /// The font description as a [`pango::FontDescription`][crate::pango::FontDescription].
    pub fn font_desc(mut self, font_desc: &pango::FontDescription) -> Self {
        self.font_desc = Some(font_desc.clone());
        self
    }

    /// The language for which the font features were selected.
    pub fn language(mut self, language: &str) -> Self {
        self.language = Some(language.to_string());
        self
    }

    /// The level of granularity to offer for selecting fonts.
    pub fn level(mut self, level: FontChooserLevel) -> Self {
        self.level = Some(level);
        self
    }

    /// The string with which to preview the font.
    pub fn preview_text(mut self, preview_text: &str) -> Self {
        self.preview_text = Some(preview_text.to_string());
        self
    }

    /// Whether to show an entry to change the preview text.
    pub fn show_preview_entry(mut self, show_preview_entry: bool) -> Self {
        self.show_preview_entry = Some(show_preview_entry);
        self
    }
}

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