// 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::Accessible;
use crate::AccessibleRole;
use crate::Align;
use crate::Buildable;
use crate::ConstraintTarget;
use crate::LayoutManager;
use crate::Overflow;
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! {
    /// [`Frame`][crate::Frame] is a widget that surrounds its child with a decorative
    /// frame and an optional label.
    ///
    /// ![An example GtkFrame](frame.png)
    ///
    /// If present, the label is drawn inside the top edge of the frame.
    /// The horizontal position of the label can be controlled with
    /// [`FrameExt::set_label_align()`][crate::prelude::FrameExt::set_label_align()].
    ///
    /// [`Frame`][crate::Frame] clips its child. You can use this to add rounded corners
    /// to widgets, but be aware that it also cuts off shadows.
    ///
    /// # GtkFrame as GtkBuildable
    ///
    /// The [`Frame`][crate::Frame] implementation of the [`Buildable`][crate::Buildable] interface supports
    /// placing a child in the label position by specifying “label” as the
    /// “type” attribute of a <child> element. A normal content child can
    /// be specified without specifying a <child> type attribute.
    ///
    /// An example of a UI definition fragment with GtkFrame:
    /// ```xml
    /// <object class="GtkFrame">
    ///   <child type="label">
    ///     <object class="GtkLabel" id="frame_label"/>
    ///   </child>
    ///   <child>
    ///     <object class="GtkEntry" id="frame_content"/>
    ///   </child>
    /// </object>
    /// ```
    ///
    /// # CSS nodes
    ///
    /// ```text
    /// frame
    /// ├── <label widget>
    /// ╰── <child>
    /// ```
    ///
    /// [`Frame`][crate::Frame] has a main CSS node with name “frame”, which is used to draw the
    /// visible border. You can set the appearance of the border using CSS properties
    /// like “border-style” on this node.
    ///
    /// # Implements
    ///
    /// [`FrameExt`][trait@crate::prelude::FrameExt], [`WidgetExt`][trait@crate::prelude::WidgetExt], [`trait@glib::ObjectExt`], [`AccessibleExt`][trait@crate::prelude::AccessibleExt], [`BuildableExt`][trait@crate::prelude::BuildableExt], [`ConstraintTargetExt`][trait@crate::prelude::ConstraintTargetExt], [`WidgetExtManual`][trait@crate::prelude::WidgetExtManual], [`AccessibleExtManual`][trait@crate::prelude::AccessibleExtManual]
    #[doc(alias = "GtkFrame")]
    pub struct Frame(Object<ffi::GtkFrame, ffi::GtkFrameClass>) @extends Widget, @implements Accessible, Buildable, ConstraintTarget;

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

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

    /// Creates a new [`Frame`][crate::Frame], with optional label @label.
    ///
    /// If @label is [`None`], the label is omitted.
    /// ## `label`
    /// the text to use as the label of the frame
    ///
    /// # Returns
    ///
    /// a new [`Frame`][crate::Frame] widget
    #[doc(alias = "gtk_frame_new")]
    pub fn new(label: Option<&str>) -> Frame {
        assert_initialized_main_thread!();
        unsafe { Widget::from_glib_none(ffi::gtk_frame_new(label.to_glib_none().0)).unsafe_cast() }
    }

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

impl Default for Frame {
    fn default() -> Self {
        glib::object::Object::new::<Self>(&[])
    }
}

#[derive(Clone, Default)]
// rustdoc-stripper-ignore-next
/// A [builder-pattern] type to construct [`Frame`] 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 FrameBuilder {
    child: Option<Widget>,
    label: Option<String>,
    label_widget: Option<Widget>,
    label_xalign: Option<f32>,
    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>,
}

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

    // rustdoc-stripper-ignore-next
    /// Build the [`Frame`].
    #[must_use = "Building the object from the builder is usually expensive and is not expected to have side effects"]
    pub fn build(self) -> Frame {
        let mut properties: Vec<(&str, &dyn ToValue)> = vec![];
        if let Some(ref child) = self.child {
            properties.push(("child", child));
        }
        if let Some(ref label) = self.label {
            properties.push(("label", label));
        }
        if let Some(ref label_widget) = self.label_widget {
            properties.push(("label-widget", label_widget));
        }
        if let Some(ref label_xalign) = self.label_xalign {
            properties.push(("label-xalign", label_xalign));
        }
        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));
        }
        glib::Object::new::<Frame>(&properties)
    }

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

    /// Text of the frame's label.
    pub fn label(mut self, label: &str) -> Self {
        self.label = Some(label.to_string());
        self
    }

    /// Widget to display in place of the usual frame label.
    pub fn label_widget(mut self, label_widget: &impl IsA<Widget>) -> Self {
        self.label_widget = Some(label_widget.clone().upcast());
        self
    }

    /// The horizontal alignment of the label.
    pub fn label_xalign(mut self, label_xalign: f32) -> Self {
        self.label_xalign = Some(label_xalign);
        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(mut self, layout_manager: &impl IsA<LayoutManager>) -> 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
    }
}

/// Trait containing all [`struct@Frame`] methods.
///
/// # Implementors
///
/// [`Frame`][struct@crate::Frame]
pub trait FrameExt: 'static {
    /// Gets the child widget of @self.
    ///
    /// # Returns
    ///
    /// the child widget of @self
    #[doc(alias = "gtk_frame_get_child")]
    #[doc(alias = "get_child")]
    fn child(&self) -> Option<Widget>;

    /// Returns the frame labels text.
    ///
    /// If the frame's label widget is not a [`Label`][crate::Label], [`None`]
    /// is returned.
    ///
    /// # Returns
    ///
    /// the text in the label, or [`None`] if there
    ///    was no label widget or the label widget was not a [`Label`][crate::Label].
    ///    This string is owned by GTK and must not be modified or freed.
    #[doc(alias = "gtk_frame_get_label")]
    #[doc(alias = "get_label")]
    fn label(&self) -> Option<glib::GString>;

    /// Retrieves the X alignment of the frame’s label.
    ///
    /// # Returns
    ///
    /// the frames X alignment
    #[doc(alias = "gtk_frame_get_label_align")]
    #[doc(alias = "get_label_align")]
    fn label_align(&self) -> f32;

    /// Retrieves the label widget for the frame.
    ///
    /// # Returns
    ///
    /// the label widget
    #[doc(alias = "gtk_frame_get_label_widget")]
    #[doc(alias = "get_label_widget")]
    fn label_widget(&self) -> Option<Widget>;

    /// Sets the child widget of @self.
    /// ## `child`
    /// the child widget
    #[doc(alias = "gtk_frame_set_child")]
    fn set_child(&self, child: Option<&impl IsA<Widget>>);

    /// Creates a new [`Label`][crate::Label] with the @label and sets it as the frame's
    /// label widget.
    /// ## `label`
    /// the text to use as the label of the frame
    #[doc(alias = "gtk_frame_set_label")]
    fn set_label(&self, label: Option<&str>);

    /// Sets the X alignment of the frame widget’s label.
    ///
    /// The default value for a newly created frame is 0.0.
    /// ## `xalign`
    /// The position of the label along the top edge
    ///   of the widget. A value of 0.0 represents left alignment;
    ///   1.0 represents right alignment.
    #[doc(alias = "gtk_frame_set_label_align")]
    fn set_label_align(&self, xalign: f32);

    /// Sets the label widget for the frame.
    ///
    /// This is the widget that will appear embedded in the top edge
    /// of the frame as a title.
    /// ## `label_widget`
    /// the new label widget
    #[doc(alias = "gtk_frame_set_label_widget")]
    fn set_label_widget(&self, label_widget: Option<&impl IsA<Widget>>);

    /// The horizontal alignment of the label.
    #[doc(alias = "label-xalign")]
    fn label_xalign(&self) -> f32;

    /// The horizontal alignment of the label.
    #[doc(alias = "label-xalign")]
    fn set_label_xalign(&self, label_xalign: f32);

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

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

    #[doc(alias = "label-widget")]
    fn connect_label_widget_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;

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

impl<O: IsA<Frame>> FrameExt for O {
    fn child(&self) -> Option<Widget> {
        unsafe { from_glib_none(ffi::gtk_frame_get_child(self.as_ref().to_glib_none().0)) }
    }

    fn label(&self) -> Option<glib::GString> {
        unsafe { from_glib_none(ffi::gtk_frame_get_label(self.as_ref().to_glib_none().0)) }
    }

    fn label_align(&self) -> f32 {
        unsafe { ffi::gtk_frame_get_label_align(self.as_ref().to_glib_none().0) }
    }

    fn label_widget(&self) -> Option<Widget> {
        unsafe {
            from_glib_none(ffi::gtk_frame_get_label_widget(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn set_child(&self, child: Option<&impl IsA<Widget>>) {
        unsafe {
            ffi::gtk_frame_set_child(
                self.as_ref().to_glib_none().0,
                child.map(|p| p.as_ref()).to_glib_none().0,
            );
        }
    }

    fn set_label(&self, label: Option<&str>) {
        unsafe {
            ffi::gtk_frame_set_label(self.as_ref().to_glib_none().0, label.to_glib_none().0);
        }
    }

    fn set_label_align(&self, xalign: f32) {
        unsafe {
            ffi::gtk_frame_set_label_align(self.as_ref().to_glib_none().0, xalign);
        }
    }

    fn set_label_widget(&self, label_widget: Option<&impl IsA<Widget>>) {
        unsafe {
            ffi::gtk_frame_set_label_widget(
                self.as_ref().to_glib_none().0,
                label_widget.map(|p| p.as_ref()).to_glib_none().0,
            );
        }
    }

    fn label_xalign(&self) -> f32 {
        glib::ObjectExt::property(self.as_ref(), "label-xalign")
    }

    fn set_label_xalign(&self, label_xalign: f32) {
        glib::ObjectExt::set_property(self.as_ref(), "label-xalign", &label_xalign)
    }

    fn connect_child_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_child_trampoline<P: IsA<Frame>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkFrame,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(Frame::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::child\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_child_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn connect_label_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_label_trampoline<P: IsA<Frame>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkFrame,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(Frame::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::label\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_label_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn connect_label_widget_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_label_widget_trampoline<P: IsA<Frame>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkFrame,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(Frame::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::label-widget\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_label_widget_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn connect_label_xalign_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_label_xalign_trampoline<P: IsA<Frame>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkFrame,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(Frame::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::label-xalign\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_label_xalign_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }
}

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