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// 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::{LayoutManager, Widget};
use glib::{prelude::*, translate::*};
use std::fmt;

glib::wrapper! {
    /// [`LayoutChild`][crate::LayoutChild] is the base class for objects that are meant to hold
    /// layout properties.
    ///
    /// If a [`LayoutManager`][crate::LayoutManager] has per-child properties, like their packing type,
    /// or the horizontal and vertical span, or the icon name, then the layout
    /// manager should use a [`LayoutChild`][crate::LayoutChild] implementation to store those properties.
    ///
    /// A [`LayoutChild`][crate::LayoutChild] instance is only ever valid while a widget is part
    /// of a layout.
    ///
    /// This is an Abstract Base Class, you cannot instantiate it.
    ///
    /// ## Properties
    ///
    ///
    /// #### `child-widget`
    ///  The widget that is associated to the [`LayoutChild`][crate::LayoutChild] instance.
    ///
    /// Readable | Writeable | Construct Only
    ///
    ///
    /// #### `layout-manager`
    ///  The layout manager that created the [`LayoutChild`][crate::LayoutChild] instance.
    ///
    /// Readable | Writeable | Construct Only
    ///
    /// # Implements
    ///
    /// [`LayoutChildExt`][trait@crate::prelude::LayoutChildExt], [`trait@glib::ObjectExt`]
    #[doc(alias = "GtkLayoutChild")]
    pub struct LayoutChild(Object<ffi::GtkLayoutChild, ffi::GtkLayoutChildClass>);

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

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

mod sealed {
    pub trait Sealed {}
    impl<T: super::IsA<super::LayoutChild>> Sealed for T {}
}

/// Trait containing all [`struct@LayoutChild`] methods.
///
/// # Implementors
///
/// [`ConstraintLayoutChild`][struct@crate::ConstraintLayoutChild], [`FixedLayoutChild`][struct@crate::FixedLayoutChild], [`GridLayoutChild`][struct@crate::GridLayoutChild], [`LayoutChild`][struct@crate::LayoutChild], [`OverlayLayoutChild`][struct@crate::OverlayLayoutChild]
pub trait LayoutChildExt: IsA<LayoutChild> + sealed::Sealed + 'static {
    /// Retrieves the [`Widget`][crate::Widget] associated to the given @self.
    ///
    /// # Returns
    ///
    /// a [`Widget`][crate::Widget]
    #[doc(alias = "gtk_layout_child_get_child_widget")]
    #[doc(alias = "get_child_widget")]
    fn child_widget(&self) -> Widget {
        unsafe {
            from_glib_none(ffi::gtk_layout_child_get_child_widget(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Retrieves the [`LayoutManager`][crate::LayoutManager] instance that created the
    /// given @self.
    ///
    /// # Returns
    ///
    /// a [`LayoutManager`][crate::LayoutManager]
    #[doc(alias = "gtk_layout_child_get_layout_manager")]
    #[doc(alias = "get_layout_manager")]
    fn layout_manager(&self) -> LayoutManager {
        unsafe {
            from_glib_none(ffi::gtk_layout_child_get_layout_manager(
                self.as_ref().to_glib_none().0,
            ))
        }
    }
}

impl<O: IsA<LayoutChild>> LayoutChildExt for O {}

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