// 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::Adjustment;
use crate::Buildable;
use crate::ResizeMode;
use crate::Widget;
use crate::WidgetPath;
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 GTK+ user interface is constructed by nesting widgets inside widgets.
    /// Container widgets are the inner nodes in the resulting tree of widgets:
    /// they contain other widgets. So, for example, you might have a [`Window`][crate::Window]
    /// containing a [`Frame`][crate::Frame] containing a [`Label`][crate::Label]. If you wanted an image instead
    /// of a textual label inside the frame, you might replace the [`Label`][crate::Label] widget
    /// with a [`Image`][crate::Image] widget.
    ///
    /// There are two major kinds of container widgets in GTK+. Both are subclasses
    /// of the abstract GtkContainer base class.
    ///
    /// The first type of container widget has a single child widget and derives
    /// from [`Bin`][crate::Bin]. These containers are decorators, which
    /// add some kind of functionality to the child. For example, a [`Button`][crate::Button] makes
    /// its child into a clickable button; a [`Frame`][crate::Frame] draws a frame around its child
    /// and a [`Window`][crate::Window] places its child widget inside a top-level window.
    ///
    /// The second type of container can have more than one child; its purpose is to
    /// manage layout. This means that these containers assign
    /// sizes and positions to their children. For example, a `GtkHBox` arranges its
    /// children in a horizontal row, and a [`Grid`][crate::Grid] arranges the widgets it contains
    /// in a two-dimensional grid.
    ///
    /// For implementations of [`Container`][crate::Container] the virtual method `GtkContainerClass.forall()`
    /// is always required, since it's used for drawing and other internal operations
    /// on the children.
    /// If the [`Container`][crate::Container] implementation expect to have non internal children
    /// it's needed to implement both `GtkContainerClass.add()` and `GtkContainerClass.remove()`.
    /// If the GtkContainer implementation has internal children, they should be added
    /// with [`WidgetExt::set_parent()`][crate::prelude::WidgetExt::set_parent()] on `init()` and removed with [`WidgetExt::unparent()`][crate::prelude::WidgetExt::unparent()]
    /// in the `GtkWidgetClass.destroy()` implementation.
    /// See more about implementing custom widgets at https://wiki.gnome.org/HowDoI/CustomWidgets
    ///
    /// # Height for width geometry management
    ///
    /// GTK+ uses a height-for-width (and width-for-height) geometry management system.
    /// Height-for-width means that a widget can change how much vertical space it needs,
    /// depending on the amount of horizontal space that it is given (and similar for
    /// width-for-height).
    ///
    /// There are some things to keep in mind when implementing container widgets
    /// that make use of GTK+’s height for width geometry management system. First,
    /// it’s important to note that a container must prioritize one of its
    /// dimensions, that is to say that a widget or container can only have a
    /// [`SizeRequestMode`][crate::SizeRequestMode] that is [`SizeRequestMode::HeightForWidth`][crate::SizeRequestMode::HeightForWidth] or
    /// [`SizeRequestMode::WidthForHeight`][crate::SizeRequestMode::WidthForHeight]. However, every widget and container
    /// must be able to respond to the APIs for both dimensions, i.e. even if a
    /// widget has a request mode that is height-for-width, it is possible that
    /// its parent will request its sizes using the width-for-height APIs.
    ///
    /// To ensure that everything works properly, here are some guidelines to follow
    /// when implementing height-for-width (or width-for-height) containers.
    ///
    /// Each request mode involves 2 virtual methods. Height-for-width apis run
    /// through [`WidgetExt::preferred_width()`][crate::prelude::WidgetExt::preferred_width()] and then through [`WidgetExt::preferred_height_for_width()`][crate::prelude::WidgetExt::preferred_height_for_width()].
    /// When handling requests in the opposite [`SizeRequestMode`][crate::SizeRequestMode] it is important that
    /// every widget request at least enough space to display all of its content at all times.
    ///
    /// When [`WidgetExt::preferred_height()`][crate::prelude::WidgetExt::preferred_height()] is called on a container that is height-for-width,
    /// the container must return the height for its minimum width. This is easily achieved by
    /// simply calling the reverse apis implemented for itself as follows:
    ///
    ///
    ///
    /// **⚠️ The following code is in C ⚠️**
    ///
    /// ```C
    /// static void
    /// foo_container_get_preferred_height (GtkWidget *widget,
    ///                                     gint *min_height,
    ///                                     gint *nat_height)
    /// {
    ///    if (i_am_in_height_for_width_mode)
    ///      {
    ///        gint min_width;
    ///
    ///        GTK_WIDGET_GET_CLASS (widget)->get_preferred_width (widget,
    ///                                                            &min_width,
    ///                                                            NULL);
    ///        GTK_WIDGET_GET_CLASS (widget)->get_preferred_height_for_width
    ///                                                           (widget,
    ///                                                            min_width,
    ///                                                            min_height,
    ///                                                            nat_height);
    ///      }
    ///    else
    ///      {
    ///        ... many containers support both request modes, execute the
    ///        real width-for-height request here by returning the
    ///        collective heights of all widgets that are stacked
    ///        vertically (or whatever is appropriate for this container)
    ///        ...
    ///      }
    /// }
    /// ```
    ///
    /// Similarly, when [`WidgetExt::preferred_width_for_height()`][crate::prelude::WidgetExt::preferred_width_for_height()] is called for a container or widget
    /// that is height-for-width, it then only needs to return the base minimum width like so:
    ///
    ///
    ///
    /// **⚠️ The following code is in C ⚠️**
    ///
    /// ```C
    /// static void
    /// foo_container_get_preferred_width_for_height (GtkWidget *widget,
    ///                                               gint for_height,
    ///                                               gint *min_width,
    ///                                               gint *nat_width)
    /// {
    ///    if (i_am_in_height_for_width_mode)
    ///      {
    ///        GTK_WIDGET_GET_CLASS (widget)->get_preferred_width (widget,
    ///                                                            min_width,
    ///                                                            nat_width);
    ///      }
    ///    else
    ///      {
    ///        ... execute the real width-for-height request here based on
    ///        the required width of the children collectively if the
    ///        container were to be allocated the said height ...
    ///      }
    /// }
    /// ```
    ///
    /// Height for width requests are generally implemented in terms of a virtual allocation
    /// of widgets in the input orientation. Assuming an height-for-width request mode, a container
    /// would implement the `get_preferred_height_for_width()` virtual function by first calling
    /// [`WidgetExt::preferred_width()`][crate::prelude::WidgetExt::preferred_width()] for each of its children.
    ///
    /// For each potential group of children that are lined up horizontally, the values returned by
    /// [`WidgetExt::preferred_width()`][crate::prelude::WidgetExt::preferred_width()] should be collected in an array of `GtkRequestedSize` structures.
    /// Any child spacing should be removed from the input `for_width` and then the collective size should be
    /// allocated using the `gtk_distribute_natural_allocation()` convenience function.
    ///
    /// The container will then move on to request the preferred height for each child by using
    /// [`WidgetExt::preferred_height_for_width()`][crate::prelude::WidgetExt::preferred_height_for_width()] and using the sizes stored in the `GtkRequestedSize` array.
    ///
    /// To allocate a height-for-width container, it’s again important
    /// to consider that a container must prioritize one dimension over the other. So if
    /// a container is a height-for-width container it must first allocate all widgets horizontally
    /// using a `GtkRequestedSize` array and `gtk_distribute_natural_allocation()` and then add any
    /// extra space (if and where appropriate) for the widget to expand.
    ///
    /// After adding all the expand space, the container assumes it was allocated sufficient
    /// height to fit all of its content. At this time, the container must use the total horizontal sizes
    /// of each widget to request the height-for-width of each of its children and store the requests in a
    /// `GtkRequestedSize` array for any widgets that stack vertically (for tabular containers this can
    /// be generalized into the heights and widths of rows and columns).
    /// The vertical space must then again be distributed using `gtk_distribute_natural_allocation()`
    /// while this time considering the allocated height of the widget minus any vertical spacing
    /// that the container adds. Then vertical expand space should be added where appropriate and available
    /// and the container should go on to actually allocating the child widgets.
    ///
    /// See [GtkWidget’s geometry management section][geometry-management]
    /// to learn more about implementing height-for-width geometry management for widgets.
    ///
    /// # Child properties
    ///
    /// GtkContainer introduces child properties.
    /// These are object properties that are not specific
    /// to either the container or the contained widget, but rather to their relation.
    /// Typical examples of child properties are the position or pack-type of a widget
    /// which is contained in a [`Box`][crate::Box].
    ///
    /// Use `gtk_container_class_install_child_property()` to install child properties
    /// for a container class and `gtk_container_class_find_child_property()` or
    /// `gtk_container_class_list_child_properties()` to get information about existing
    /// child properties.
    ///
    /// To set the value of a child property, use [`ContainerExtManual::child_set_property()`][crate::prelude::ContainerExtManual::child_set_property()],
    /// `gtk_container_child_set()` or `gtk_container_child_set_valist()`.
    /// To obtain the value of a child property, use
    /// [`ContainerExtManual::child_get_property()`][crate::prelude::ContainerExtManual::child_get_property()], `gtk_container_child_get()` or
    /// `gtk_container_child_get_valist()`. To emit notification about child property
    /// changes, use [`WidgetExt::child_notify()`][crate::prelude::WidgetExt::child_notify()].
    ///
    /// # GtkContainer as GtkBuildable
    ///
    /// The GtkContainer implementation of the GtkBuildable interface supports
    /// a ``<packing>`` element for children, which can contain multiple ``<property>``
    /// elements that specify child properties for the child.
    ///
    /// Since 2.16, child properties can also be marked as translatable using
    /// the same “translatable”, “comments” and “context” attributes that are used
    /// for regular properties.
    ///
    /// Since 3.16, containers can have a ``<focus-chain>`` element containing multiple
    /// ``<widget>`` elements, one for each child that should be added to the focus
    /// chain. The ”name” attribute gives the id of the widget.
    ///
    /// An example of these properties in UI definitions:
    ///
    ///
    ///
    /// **⚠️ The following code is in xml ⚠️**
    ///
    /// ```xml
    /// <object class="GtkBox">
    ///   <child>
    ///     <object class="GtkEntry" id="entry1"/>
    ///     <packing>
    ///       <property name="pack-type">start</property>
    ///     </packing>
    ///   </child>
    ///   <child>
    ///     <object class="GtkEntry" id="entry2"/>
    ///   </child>
    ///   <focus-chain>
    ///     <widget name="entry1"/>
    ///     <widget name="entry2"/>
    ///   </focus-chain>
    /// </object>
    /// ```
    ///
    /// This is an Abstract Base Class, you cannot instantiate it.
    ///
    /// # Implements
    ///
    /// [`ContainerExt`][trait@crate::prelude::ContainerExt], [`WidgetExt`][trait@crate::prelude::WidgetExt], [`trait@glib::ObjectExt`], [`BuildableExt`][trait@crate::prelude::BuildableExt], [`ContainerExtManual`][trait@crate::prelude::ContainerExtManual], [`WidgetExtManual`][trait@crate::prelude::WidgetExtManual], [`BuildableExtManual`][trait@crate::prelude::BuildableExtManual]
    #[doc(alias = "GtkContainer")]
    pub struct Container(Object<ffi::GtkContainer, ffi::GtkContainerClass>) @extends Widget, @implements Buildable;

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

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

/// Trait containing all [`struct@Container`] methods.
///
/// # Implementors
///
/// [`Bin`][struct@crate::Bin], [`Box`][struct@crate::Box], [`Container`][struct@crate::Container], [`Fixed`][struct@crate::Fixed], [`FlowBox`][struct@crate::FlowBox], [`Grid`][struct@crate::Grid], [`HeaderBar`][struct@crate::HeaderBar], [`IconView`][struct@crate::IconView], [`Layout`][struct@crate::Layout], [`ListBox`][struct@crate::ListBox], [`MenuShell`][struct@crate::MenuShell], [`Notebook`][struct@crate::Notebook], [`Paned`][struct@crate::Paned], [`Socket`][struct@crate::Socket], [`Stack`][struct@crate::Stack], [`TextView`][struct@crate::TextView], [`ToolItemGroup`][struct@crate::ToolItemGroup], [`ToolPalette`][struct@crate::ToolPalette], [`Toolbar`][struct@crate::Toolbar], [`TreeView`][struct@crate::TreeView]
pub trait ContainerExt: 'static {
    /// Adds `widget` to `self`. Typically used for simple containers
    /// such as [`Window`][crate::Window], [`Frame`][crate::Frame], or [`Button`][crate::Button]; for more complicated
    /// layout containers such as [`Box`][crate::Box] or [`Grid`][crate::Grid], this function will
    /// pick default packing parameters that may not be correct. So
    /// consider functions such as [`BoxExt::pack_start()`][crate::prelude::BoxExt::pack_start()] and
    /// [`GridExt::attach()`][crate::prelude::GridExt::attach()] as an alternative to [`add()`][Self::add()] in
    /// those cases. A widget may be added to only one container at a time;
    /// you can’t place the same widget inside two different containers.
    ///
    /// Note that some containers, such as [`ScrolledWindow`][crate::ScrolledWindow] or [`ListBox`][crate::ListBox],
    /// may add intermediate children between the added widget and the
    /// container.
    /// ## `widget`
    /// a widget to be placed inside `self`
    #[doc(alias = "gtk_container_add")]
    fn add(&self, widget: &impl IsA<Widget>);

    //#[doc(alias = "gtk_container_add_with_properties")]
    //fn add_with_properties(&self, widget: &impl IsA<Widget>, first_prop_name: &str, : /*Unknown conversion*//*Unimplemented*/Fundamental: VarArgs);

    #[doc(alias = "gtk_container_check_resize")]
    fn check_resize(&self);

    //#[doc(alias = "gtk_container_child_get")]
    //fn child_get(&self, child: &impl IsA<Widget>, first_prop_name: &str, : /*Unknown conversion*//*Unimplemented*/Fundamental: VarArgs);

    //#[doc(alias = "gtk_container_child_get_valist")]
    //fn child_get_valist(&self, child: &impl IsA<Widget>, first_property_name: &str, var_args: /*Unknown conversion*//*Unimplemented*/Unsupported);

    /// Emits a `signal::Widget::child-notify` signal for the
    /// [child property][child-properties]
    /// `child_property` on the child.
    ///
    /// This is an analogue of [`ObjectExtManual::notify()`][crate::glib::prelude::ObjectExtManual::notify()] for child properties.
    ///
    /// Also see [`WidgetExt::child_notify()`][crate::prelude::WidgetExt::child_notify()].
    /// ## `child`
    /// the child widget
    /// ## `child_property`
    /// the name of a child property installed on
    ///  the class of `self`
    #[doc(alias = "gtk_container_child_notify")]
    fn child_notify(&self, child: &impl IsA<Widget>, child_property: &str);

    /// Emits a `signal::Widget::child-notify` signal for the
    /// [child property][child-properties] specified by
    /// `pspec` on the child.
    ///
    /// This is an analogue of [`ObjectExtManual::notify_by_pspec()`][crate::glib::prelude::ObjectExtManual::notify_by_pspec()] for child properties.
    /// ## `child`
    /// the child widget
    /// ## `pspec`
    /// the [`glib::ParamSpec`][crate::glib::ParamSpec] of a child property instealled on
    ///  the class of `self`
    #[doc(alias = "gtk_container_child_notify_by_pspec")]
    fn child_notify_by_pspec(&self, child: &impl IsA<Widget>, pspec: impl AsRef<glib::ParamSpec>);

    //#[doc(alias = "gtk_container_child_set")]
    //fn child_set(&self, child: &impl IsA<Widget>, first_prop_name: &str, : /*Unknown conversion*//*Unimplemented*/Fundamental: VarArgs);

    //#[doc(alias = "gtk_container_child_set_valist")]
    //fn child_set_valist(&self, child: &impl IsA<Widget>, first_property_name: &str, var_args: /*Unknown conversion*//*Unimplemented*/Unsupported);

    #[doc(alias = "gtk_container_child_type")]
    fn child_type(&self) -> glib::types::Type;

    #[doc(alias = "gtk_container_forall")]
    fn forall<P: FnMut(&Widget)>(&self, callback: P);

    #[doc(alias = "gtk_container_foreach")]
    fn foreach<P: FnMut(&Widget)>(&self, callback: P);

    #[doc(alias = "gtk_container_get_border_width")]
    #[doc(alias = "get_border_width")]
    fn border_width(&self) -> u32;

    #[doc(alias = "gtk_container_get_children")]
    #[doc(alias = "get_children")]
    fn children(&self) -> Vec<Widget>;

    //#[cfg_attr(feature = "v3_24", deprecated = "Since 3.24")]
    //#[doc(alias = "gtk_container_get_focus_chain")]
    //#[doc(alias = "get_focus_chain")]
    //fn focus_chain(&self, focusable_widgets: /*Unimplemented*/Vec<Widget>) -> bool;

    #[doc(alias = "gtk_container_get_focus_child")]
    #[doc(alias = "get_focus_child")]
    fn focus_child(&self) -> Option<Widget>;

    #[doc(alias = "gtk_container_get_focus_hadjustment")]
    #[doc(alias = "get_focus_hadjustment")]
    fn focus_hadjustment(&self) -> Option<Adjustment>;

    #[doc(alias = "gtk_container_get_focus_vadjustment")]
    #[doc(alias = "get_focus_vadjustment")]
    fn focus_vadjustment(&self) -> Option<Adjustment>;

    #[doc(alias = "gtk_container_get_path_for_child")]
    #[doc(alias = "get_path_for_child")]
    fn path_for_child(&self, child: &impl IsA<Widget>) -> Option<WidgetPath>;

    #[doc(alias = "gtk_container_propagate_draw")]
    fn propagate_draw(&self, child: &impl IsA<Widget>, cr: &cairo::Context);

    #[doc(alias = "gtk_container_remove")]
    fn remove(&self, widget: &impl IsA<Widget>);

    #[doc(alias = "gtk_container_set_border_width")]
    fn set_border_width(&self, border_width: u32);

    #[cfg_attr(feature = "v3_24", deprecated = "Since 3.24")]
    #[doc(alias = "gtk_container_set_focus_chain")]
    fn set_focus_chain(&self, focusable_widgets: &[Widget]);

    #[doc(alias = "gtk_container_set_focus_child")]
    fn set_focus_child(&self, child: Option<&impl IsA<Widget>>);

    #[doc(alias = "gtk_container_set_focus_hadjustment")]
    fn set_focus_hadjustment(&self, adjustment: &impl IsA<Adjustment>);

    #[doc(alias = "gtk_container_set_focus_vadjustment")]
    fn set_focus_vadjustment(&self, adjustment: &impl IsA<Adjustment>);

    #[cfg_attr(feature = "v3_24", deprecated = "Since 3.24")]
    #[doc(alias = "gtk_container_unset_focus_chain")]
    fn unset_focus_chain(&self);

    fn set_child<P: IsA<Widget>>(&self, child: Option<&P>);

    #[doc(alias = "resize-mode")]
    fn resize_mode(&self) -> ResizeMode;

    #[doc(alias = "resize-mode")]
    fn set_resize_mode(&self, resize_mode: ResizeMode);

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

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

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

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

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

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

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

impl<O: IsA<Container>> ContainerExt for O {
    fn add(&self, widget: &impl IsA<Widget>) {
        unsafe {
            ffi::gtk_container_add(
                self.as_ref().to_glib_none().0,
                widget.as_ref().to_glib_none().0,
            );
        }
    }

    //fn add_with_properties(&self, widget: &impl IsA<Widget>, first_prop_name: &str, : /*Unknown conversion*//*Unimplemented*/Fundamental: VarArgs) {
    //    unsafe { TODO: call ffi:gtk_container_add_with_properties() }
    //}

    fn check_resize(&self) {
        unsafe {
            ffi::gtk_container_check_resize(self.as_ref().to_glib_none().0);
        }
    }

    //fn child_get(&self, child: &impl IsA<Widget>, first_prop_name: &str, : /*Unknown conversion*//*Unimplemented*/Fundamental: VarArgs) {
    //    unsafe { TODO: call ffi:gtk_container_child_get() }
    //}

    //fn child_get_valist(&self, child: &impl IsA<Widget>, first_property_name: &str, var_args: /*Unknown conversion*//*Unimplemented*/Unsupported) {
    //    unsafe { TODO: call ffi:gtk_container_child_get_valist() }
    //}

    fn child_notify(&self, child: &impl IsA<Widget>, child_property: &str) {
        unsafe {
            ffi::gtk_container_child_notify(
                self.as_ref().to_glib_none().0,
                child.as_ref().to_glib_none().0,
                child_property.to_glib_none().0,
            );
        }
    }

    fn child_notify_by_pspec(&self, child: &impl IsA<Widget>, pspec: impl AsRef<glib::ParamSpec>) {
        unsafe {
            ffi::gtk_container_child_notify_by_pspec(
                self.as_ref().to_glib_none().0,
                child.as_ref().to_glib_none().0,
                pspec.as_ref().to_glib_none().0,
            );
        }
    }

    //fn child_set(&self, child: &impl IsA<Widget>, first_prop_name: &str, : /*Unknown conversion*//*Unimplemented*/Fundamental: VarArgs) {
    //    unsafe { TODO: call ffi:gtk_container_child_set() }
    //}

    //fn child_set_valist(&self, child: &impl IsA<Widget>, first_property_name: &str, var_args: /*Unknown conversion*//*Unimplemented*/Unsupported) {
    //    unsafe { TODO: call ffi:gtk_container_child_set_valist() }
    //}

    fn child_type(&self) -> glib::types::Type {
        unsafe {
            from_glib(ffi::gtk_container_child_type(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn forall<P: FnMut(&Widget)>(&self, callback: P) {
        let callback_data: P = callback;
        unsafe extern "C" fn callback_func<P: FnMut(&Widget)>(
            widget: *mut ffi::GtkWidget,
            data: glib::ffi::gpointer,
        ) {
            let widget = from_glib_borrow(widget);
            let callback: *mut P = data as *const _ as usize as *mut P;
            (*callback)(&widget);
        }
        let callback = Some(callback_func::<P> as _);
        let super_callback0: &P = &callback_data;
        unsafe {
            ffi::gtk_container_forall(
                self.as_ref().to_glib_none().0,
                callback,
                super_callback0 as *const _ as usize as *mut _,
            );
        }
    }

    fn foreach<P: FnMut(&Widget)>(&self, callback: P) {
        let callback_data: P = callback;
        unsafe extern "C" fn callback_func<P: FnMut(&Widget)>(
            widget: *mut ffi::GtkWidget,
            data: glib::ffi::gpointer,
        ) {
            let widget = from_glib_borrow(widget);
            let callback: *mut P = data as *const _ as usize as *mut P;
            (*callback)(&widget);
        }
        let callback = Some(callback_func::<P> as _);
        let super_callback0: &P = &callback_data;
        unsafe {
            ffi::gtk_container_foreach(
                self.as_ref().to_glib_none().0,
                callback,
                super_callback0 as *const _ as usize as *mut _,
            );
        }
    }

    fn border_width(&self) -> u32 {
        unsafe { ffi::gtk_container_get_border_width(self.as_ref().to_glib_none().0) }
    }

    fn children(&self) -> Vec<Widget> {
        unsafe {
            FromGlibPtrContainer::from_glib_container(ffi::gtk_container_get_children(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    //fn focus_chain(&self, focusable_widgets: /*Unimplemented*/Vec<Widget>) -> bool {
    //    unsafe { TODO: call ffi:gtk_container_get_focus_chain() }
    //}

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

    fn focus_hadjustment(&self) -> Option<Adjustment> {
        unsafe {
            from_glib_none(ffi::gtk_container_get_focus_hadjustment(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn focus_vadjustment(&self) -> Option<Adjustment> {
        unsafe {
            from_glib_none(ffi::gtk_container_get_focus_vadjustment(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn path_for_child(&self, child: &impl IsA<Widget>) -> Option<WidgetPath> {
        unsafe {
            from_glib_full(ffi::gtk_container_get_path_for_child(
                self.as_ref().to_glib_none().0,
                child.as_ref().to_glib_none().0,
            ))
        }
    }

    fn propagate_draw(&self, child: &impl IsA<Widget>, cr: &cairo::Context) {
        unsafe {
            ffi::gtk_container_propagate_draw(
                self.as_ref().to_glib_none().0,
                child.as_ref().to_glib_none().0,
                mut_override(cr.to_glib_none().0),
            );
        }
    }

    fn remove(&self, widget: &impl IsA<Widget>) {
        unsafe {
            ffi::gtk_container_remove(
                self.as_ref().to_glib_none().0,
                widget.as_ref().to_glib_none().0,
            );
        }
    }

    fn set_border_width(&self, border_width: u32) {
        unsafe {
            ffi::gtk_container_set_border_width(self.as_ref().to_glib_none().0, border_width);
        }
    }

    fn set_focus_chain(&self, focusable_widgets: &[Widget]) {
        unsafe {
            ffi::gtk_container_set_focus_chain(
                self.as_ref().to_glib_none().0,
                focusable_widgets.to_glib_none().0,
            );
        }
    }

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

    fn set_focus_hadjustment(&self, adjustment: &impl IsA<Adjustment>) {
        unsafe {
            ffi::gtk_container_set_focus_hadjustment(
                self.as_ref().to_glib_none().0,
                adjustment.as_ref().to_glib_none().0,
            );
        }
    }

    fn set_focus_vadjustment(&self, adjustment: &impl IsA<Adjustment>) {
        unsafe {
            ffi::gtk_container_set_focus_vadjustment(
                self.as_ref().to_glib_none().0,
                adjustment.as_ref().to_glib_none().0,
            );
        }
    }

    fn unset_focus_chain(&self) {
        unsafe {
            ffi::gtk_container_unset_focus_chain(self.as_ref().to_glib_none().0);
        }
    }

    fn set_child<P: IsA<Widget>>(&self, child: Option<&P>) {
        glib::ObjectExt::set_property(self.as_ref(), "child", &child)
    }

    fn resize_mode(&self) -> ResizeMode {
        glib::ObjectExt::property(self.as_ref(), "resize-mode")
    }

    fn set_resize_mode(&self, resize_mode: ResizeMode) {
        glib::ObjectExt::set_property(self.as_ref(), "resize-mode", &resize_mode)
    }

    fn connect_add<F: Fn(&Self, &Widget) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn add_trampoline<P: IsA<Container>, F: Fn(&P, &Widget) + 'static>(
            this: *mut ffi::GtkContainer,
            object: *mut ffi::GtkWidget,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(
                Container::from_glib_borrow(this).unsafe_cast_ref(),
                &from_glib_borrow(object),
            )
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"add\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    add_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

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

    fn connect_remove<F: Fn(&Self, &Widget) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn remove_trampoline<P: IsA<Container>, F: Fn(&P, &Widget) + 'static>(
            this: *mut ffi::GtkContainer,
            object: *mut ffi::GtkWidget,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(
                Container::from_glib_borrow(this).unsafe_cast_ref(),
                &from_glib_borrow(object),
            )
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"remove\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    remove_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn connect_set_focus_child<F: Fn(&Self, &Widget) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn set_focus_child_trampoline<
            P: IsA<Container>,
            F: Fn(&P, &Widget) + 'static,
        >(
            this: *mut ffi::GtkContainer,
            object: *mut ffi::GtkWidget,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(
                Container::from_glib_borrow(this).unsafe_cast_ref(),
                &from_glib_borrow(object),
            )
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"set-focus-child\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    set_focus_child_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

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

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

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