// 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::BaselinePosition;
use crate::Buildable;
use crate::ConstraintTarget;
use crate::LayoutManager;
use crate::Orientable;
use crate::Orientation;
use crate::Overflow;
use crate::PositionType;
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;
use std::mem::transmute;

glib::wrapper! {
    /// [`Grid`][crate::Grid] is a container which arranges its child widgets in
    /// rows and columns.
    ///
    /// ![An example GtkGrid](grid.png)
    ///
    /// It supports arbitrary positions and horizontal/vertical spans.
    ///
    /// Children are added using [`GridExt::attach()`][crate::prelude::GridExt::attach()]. They can span multiple
    /// rows or columns. It is also possible to add a child next to an existing
    /// child, using [`GridExt::attach_next_to()`][crate::prelude::GridExt::attach_next_to()]. To remove a child from the
    /// grid, use [`GridExt::remove()`][crate::prelude::GridExt::remove()].
    ///
    /// The behaviour of [`Grid`][crate::Grid] when several children occupy the same grid
    /// cell is undefined.
    ///
    /// # GtkGrid as GtkBuildable
    ///
    /// Every child in a [`Grid`][crate::Grid] has access to a custom [`Buildable`][crate::Buildable]
    /// element, called `<layout>`. It can by used to specify a position in the
    /// grid and optionally spans. All properties that can be used in the `<layout>`
    /// element are implemented by [`GridLayoutChild`][crate::GridLayoutChild].
    ///
    /// It is implemented by [`Widget`][crate::Widget] using [`LayoutManager`][crate::LayoutManager].
    ///
    /// To showcase it, here is a simple example:
    ///
    /// ```xml
    /// <object class="GtkGrid" id="my_grid">
    ///   <child>
    ///     <object class="GtkButton" id="button1">
    ///       <property name="label">Button 1</property>
    ///       <layout>
    ///         <property name="column">0</property>
    ///         <property name="row">0</property>
    ///       </layout>
    ///     </object>
    ///   </child>
    ///   <child>
    ///     <object class="GtkButton" id="button2">
    ///       <property name="label">Button 2</property>
    ///       <layout>
    ///         <property name="column">1</property>
    ///         <property name="row">0</property>
    ///       </layout>
    ///     </object>
    ///   </child>
    ///   <child>
    ///     <object class="GtkButton" id="button3">
    ///       <property name="label">Button 3</property>
    ///       <layout>
    ///         <property name="column">2</property>
    ///         <property name="row">0</property>
    ///         <property name="row-span">2</property>
    ///       </layout>
    ///     </object>
    ///   </child>
    ///   <child>
    ///     <object class="GtkButton" id="button4">
    ///       <property name="label">Button 4</property>
    ///       <layout>
    ///         <property name="column">0</property>
    ///         <property name="row">1</property>
    ///         <property name="column-span">2</property>
    ///       </layout>
    ///     </object>
    ///   </child>
    /// </object>
    /// ```
    ///
    /// It organizes the first two buttons side-by-side in one cell each.
    /// The third button is in the last column but spans across two rows.
    /// This is defined by the `row-span` property. The last button is
    /// located in the second row and spans across two columns, which is
    /// defined by the `column-span` property.
    ///
    /// # CSS nodes
    ///
    /// [`Grid`][crate::Grid] uses a single CSS node with name `grid`.
    ///
    /// # Accessibility
    ///
    /// [`Grid`][crate::Grid] uses the [`AccessibleRole::Group`][crate::AccessibleRole::Group] role.
    ///
    /// # Implements
    ///
    /// [`GridExt`][trait@crate::prelude::GridExt], [`WidgetExt`][trait@crate::prelude::WidgetExt], [`trait@glib::ObjectExt`], [`AccessibleExt`][trait@crate::prelude::AccessibleExt], [`BuildableExt`][trait@crate::prelude::BuildableExt], [`ConstraintTargetExt`][trait@crate::prelude::ConstraintTargetExt], [`OrientableExt`][trait@crate::prelude::OrientableExt], [`WidgetExtManual`][trait@crate::prelude::WidgetExtManual], [`AccessibleExtManual`][trait@crate::prelude::AccessibleExtManual]
    #[doc(alias = "GtkGrid")]
    pub struct Grid(Object<ffi::GtkGrid, ffi::GtkGridClass>) @extends Widget, @implements Accessible, Buildable, ConstraintTarget, Orientable;

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

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

    /// Creates a new grid widget.
    ///
    /// # Returns
    ///
    /// the new [`Grid`][crate::Grid]
    #[doc(alias = "gtk_grid_new")]
    pub fn new() -> Grid {
        assert_initialized_main_thread!();
        unsafe { Widget::from_glib_none(ffi::gtk_grid_new()).unsafe_cast() }
    }

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

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

#[derive(Clone, Default)]
// rustdoc-stripper-ignore-next
/// A [builder-pattern] type to construct [`Grid`] 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 GridBuilder {
    baseline_row: Option<i32>,
    column_homogeneous: Option<bool>,
    column_spacing: Option<i32>,
    row_homogeneous: Option<bool>,
    row_spacing: Option<i32>,
    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>,
    orientation: Option<Orientation>,
}

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

    // rustdoc-stripper-ignore-next
    /// Build the [`Grid`].
    #[must_use = "Building the object from the builder is usually expensive and is not expected to have side effects"]
    pub fn build(self) -> Grid {
        let mut properties: Vec<(&str, &dyn ToValue)> = vec![];
        if let Some(ref baseline_row) = self.baseline_row {
            properties.push(("baseline-row", baseline_row));
        }
        if let Some(ref column_homogeneous) = self.column_homogeneous {
            properties.push(("column-homogeneous", column_homogeneous));
        }
        if let Some(ref column_spacing) = self.column_spacing {
            properties.push(("column-spacing", column_spacing));
        }
        if let Some(ref row_homogeneous) = self.row_homogeneous {
            properties.push(("row-homogeneous", row_homogeneous));
        }
        if let Some(ref row_spacing) = self.row_spacing {
            properties.push(("row-spacing", row_spacing));
        }
        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 orientation) = self.orientation {
            properties.push(("orientation", orientation));
        }
        glib::Object::new::<Grid>(&properties).expect("Failed to create an instance of Grid")
    }

    /// The row to align to the baseline when valign is [`Align::Baseline`][crate::Align::Baseline].
    pub fn baseline_row(mut self, baseline_row: i32) -> Self {
        self.baseline_row = Some(baseline_row);
        self
    }

    /// If [`true`], the columns are all the same width.
    pub fn column_homogeneous(mut self, column_homogeneous: bool) -> Self {
        self.column_homogeneous = Some(column_homogeneous);
        self
    }

    /// The amount of space between two consecutive columns.
    pub fn column_spacing(mut self, column_spacing: i32) -> Self {
        self.column_spacing = Some(column_spacing);
        self
    }

    /// If [`true`], the rows are all the same height.
    pub fn row_homogeneous(mut self, row_homogeneous: bool) -> Self {
        self.row_homogeneous = Some(row_homogeneous);
        self
    }

    /// The amount of space between two consecutive rows.
    pub fn row_spacing(mut self, row_spacing: i32) -> Self {
        self.row_spacing = Some(row_spacing);
        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
    }

    /// The orientation of the orientable.
    pub fn orientation(mut self, orientation: Orientation) -> Self {
        self.orientation = Some(orientation);
        self
    }
}

/// Trait containing all [`struct@Grid`] methods.
///
/// # Implementors
///
/// [`Grid`][struct@crate::Grid]
pub trait GridExt: 'static {
    /// Adds a widget to the grid.
    ///
    /// The position of @child is determined by @column and @row.
    /// The number of “cells” that @child will occupy is determined
    /// by @width and @height.
    /// ## `child`
    /// the widget to add
    /// ## `column`
    /// the column number to attach the left side of @child to
    /// ## `row`
    /// the row number to attach the top side of @child to
    /// ## `width`
    /// the number of columns that @child will span
    /// ## `height`
    /// the number of rows that @child will span
    #[doc(alias = "gtk_grid_attach")]
    fn attach(&self, child: &impl IsA<Widget>, column: i32, row: i32, width: i32, height: i32);

    /// Adds a widget to the grid.
    ///
    /// The widget is placed next to @sibling, on the side determined by
    /// @side. When @sibling is [`None`], the widget is placed in row (for
    /// left or right placement) or column 0 (for top or bottom placement),
    /// at the end indicated by @side.
    ///
    /// Attaching widgets labeled `[1]`, `[2]`, `[3]` with `@sibling == [`None`]` and
    /// `@side == [`PositionType::Left`][crate::PositionType::Left]` yields a layout of `[3][2][1]`.
    /// ## `child`
    /// the widget to add
    /// ## `sibling`
    /// the child of @self that @child will be placed
    ///   next to, or [`None`] to place @child at the beginning or end
    /// ## `side`
    /// the side of @sibling that @child is positioned next to
    /// ## `width`
    /// the number of columns that @child will span
    /// ## `height`
    /// the number of rows that @child will span
    #[doc(alias = "gtk_grid_attach_next_to")]
    fn attach_next_to(
        &self,
        child: &impl IsA<Widget>,
        sibling: Option<&impl IsA<Widget>>,
        side: PositionType,
        width: i32,
        height: i32,
    );

    /// Returns which row defines the global baseline of @self.
    ///
    /// # Returns
    ///
    /// the row index defining the global baseline
    #[doc(alias = "gtk_grid_get_baseline_row")]
    #[doc(alias = "get_baseline_row")]
    fn baseline_row(&self) -> i32;

    /// Gets the child of @self whose area covers the grid
    /// cell at @column, @row.
    /// ## `column`
    /// the left edge of the cell
    /// ## `row`
    /// the top edge of the cell
    ///
    /// # Returns
    ///
    /// the child at the given position
    #[doc(alias = "gtk_grid_get_child_at")]
    #[doc(alias = "get_child_at")]
    fn child_at(&self, column: i32, row: i32) -> Option<Widget>;

    /// Returns whether all columns of @self have the same width.
    ///
    /// # Returns
    ///
    /// whether all columns of @self have the same width.
    #[doc(alias = "gtk_grid_get_column_homogeneous")]
    #[doc(alias = "get_column_homogeneous")]
    fn is_column_homogeneous(&self) -> bool;

    /// Returns the amount of space between the columns of @self.
    ///
    /// # Returns
    ///
    /// the column spacing of @self
    #[doc(alias = "gtk_grid_get_column_spacing")]
    #[doc(alias = "get_column_spacing")]
    fn column_spacing(&self) -> u32;

    /// Returns the baseline position of @row.
    ///
    /// See [`set_row_baseline_position()`][Self::set_row_baseline_position()].
    /// ## `row`
    /// a row index
    ///
    /// # Returns
    ///
    /// the baseline position of @row
    #[doc(alias = "gtk_grid_get_row_baseline_position")]
    #[doc(alias = "get_row_baseline_position")]
    fn row_baseline_position(&self, row: i32) -> BaselinePosition;

    /// Returns whether all rows of @self have the same height.
    ///
    /// # Returns
    ///
    /// whether all rows of @self have the same height.
    #[doc(alias = "gtk_grid_get_row_homogeneous")]
    #[doc(alias = "get_row_homogeneous")]
    fn is_row_homogeneous(&self) -> bool;

    /// Returns the amount of space between the rows of @self.
    ///
    /// # Returns
    ///
    /// the row spacing of @self
    #[doc(alias = "gtk_grid_get_row_spacing")]
    #[doc(alias = "get_row_spacing")]
    fn row_spacing(&self) -> u32;

    /// Inserts a column at the specified position.
    ///
    /// Children which are attached at or to the right of this position
    /// are moved one column to the right. Children which span across this
    /// position are grown to span the new column.
    /// ## `position`
    /// the position to insert the column at
    #[doc(alias = "gtk_grid_insert_column")]
    fn insert_column(&self, position: i32);

    /// Inserts a row or column at the specified position.
    ///
    /// The new row or column is placed next to @sibling, on the side
    /// determined by @side. If @side is [`PositionType::Top`][crate::PositionType::Top] or [`PositionType::Bottom`][crate::PositionType::Bottom],
    /// a row is inserted. If @side is [`PositionType::Left`][crate::PositionType::Left] of [`PositionType::Right`][crate::PositionType::Right],
    /// a column is inserted.
    /// ## `sibling`
    /// the child of @self that the new row or column will be
    ///   placed next to
    /// ## `side`
    /// the side of @sibling that @child is positioned next to
    #[doc(alias = "gtk_grid_insert_next_to")]
    fn insert_next_to(&self, sibling: &impl IsA<Widget>, side: PositionType);

    /// Inserts a row at the specified position.
    ///
    /// Children which are attached at or below this position
    /// are moved one row down. Children which span across this
    /// position are grown to span the new row.
    /// ## `position`
    /// the position to insert the row at
    #[doc(alias = "gtk_grid_insert_row")]
    fn insert_row(&self, position: i32);

    /// Queries the attach points and spans of @child inside the given [`Grid`][crate::Grid].
    /// ## `child`
    /// a [`Widget`][crate::Widget] child of @self
    ///
    /// # Returns
    ///
    ///
    /// ## `column`
    /// the column used to attach the left side of @child
    ///
    /// ## `row`
    /// the row used to attach the top side of @child
    ///
    /// ## `width`
    /// the number of columns @child spans
    ///
    /// ## `height`
    /// the number of rows @child spans
    #[doc(alias = "gtk_grid_query_child")]
    fn query_child(&self, child: &impl IsA<Widget>) -> (i32, i32, i32, i32);

    /// Removes a child from @self.
    ///
    /// The child must have been added with
    /// [`attach()`][Self::attach()] or [`attach_next_to()`][Self::attach_next_to()].
    /// ## `child`
    /// the child widget to remove
    #[doc(alias = "gtk_grid_remove")]
    fn remove(&self, child: &impl IsA<Widget>);

    /// Removes a column from the grid.
    ///
    /// Children that are placed in this column are removed,
    /// spanning children that overlap this column have their
    /// width reduced by one, and children after the column
    /// are moved to the left.
    /// ## `position`
    /// the position of the column to remove
    #[doc(alias = "gtk_grid_remove_column")]
    fn remove_column(&self, position: i32);

    /// Removes a row from the grid.
    ///
    /// Children that are placed in this row are removed,
    /// spanning children that overlap this row have their
    /// height reduced by one, and children below the row
    /// are moved up.
    /// ## `position`
    /// the position of the row to remove
    #[doc(alias = "gtk_grid_remove_row")]
    fn remove_row(&self, position: i32);

    /// Sets which row defines the global baseline for the entire grid.
    ///
    /// Each row in the grid can have its own local baseline, but only
    /// one of those is global, meaning it will be the baseline in the
    /// parent of the @self.
    /// ## `row`
    /// the row index
    #[doc(alias = "gtk_grid_set_baseline_row")]
    fn set_baseline_row(&self, row: i32);

    /// Sets whether all columns of @self will have the same width.
    /// ## `homogeneous`
    /// [`true`] to make columns homogeneous
    #[doc(alias = "gtk_grid_set_column_homogeneous")]
    fn set_column_homogeneous(&self, homogeneous: bool);

    /// Sets the amount of space between columns of @self.
    /// ## `spacing`
    /// the amount of space to insert between columns
    #[doc(alias = "gtk_grid_set_column_spacing")]
    fn set_column_spacing(&self, spacing: u32);

    /// Sets how the baseline should be positioned on @row of the
    /// grid, in case that row is assigned more space than is requested.
    ///
    /// The default baseline position is [`BaselinePosition::Center`][crate::BaselinePosition::Center].
    /// ## `row`
    /// a row index
    /// ## `pos`
    /// a [`BaselinePosition`][crate::BaselinePosition]
    #[doc(alias = "gtk_grid_set_row_baseline_position")]
    fn set_row_baseline_position(&self, row: i32, pos: BaselinePosition);

    /// Sets whether all rows of @self will have the same height.
    /// ## `homogeneous`
    /// [`true`] to make rows homogeneous
    #[doc(alias = "gtk_grid_set_row_homogeneous")]
    fn set_row_homogeneous(&self, homogeneous: bool);

    /// Sets the amount of space between rows of @self.
    /// ## `spacing`
    /// the amount of space to insert between rows
    #[doc(alias = "gtk_grid_set_row_spacing")]
    fn set_row_spacing(&self, spacing: u32);

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

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

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

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

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

impl<O: IsA<Grid>> GridExt for O {
    fn attach(&self, child: &impl IsA<Widget>, column: i32, row: i32, width: i32, height: i32) {
        unsafe {
            ffi::gtk_grid_attach(
                self.as_ref().to_glib_none().0,
                child.as_ref().to_glib_none().0,
                column,
                row,
                width,
                height,
            );
        }
    }

    fn attach_next_to(
        &self,
        child: &impl IsA<Widget>,
        sibling: Option<&impl IsA<Widget>>,
        side: PositionType,
        width: i32,
        height: i32,
    ) {
        unsafe {
            ffi::gtk_grid_attach_next_to(
                self.as_ref().to_glib_none().0,
                child.as_ref().to_glib_none().0,
                sibling.map(|p| p.as_ref()).to_glib_none().0,
                side.into_glib(),
                width,
                height,
            );
        }
    }

    fn baseline_row(&self) -> i32 {
        unsafe { ffi::gtk_grid_get_baseline_row(self.as_ref().to_glib_none().0) }
    }

    fn child_at(&self, column: i32, row: i32) -> Option<Widget> {
        unsafe {
            from_glib_none(ffi::gtk_grid_get_child_at(
                self.as_ref().to_glib_none().0,
                column,
                row,
            ))
        }
    }

    fn is_column_homogeneous(&self) -> bool {
        unsafe {
            from_glib(ffi::gtk_grid_get_column_homogeneous(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

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

    fn row_baseline_position(&self, row: i32) -> BaselinePosition {
        unsafe {
            from_glib(ffi::gtk_grid_get_row_baseline_position(
                self.as_ref().to_glib_none().0,
                row,
            ))
        }
    }

    fn is_row_homogeneous(&self) -> bool {
        unsafe {
            from_glib(ffi::gtk_grid_get_row_homogeneous(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

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

    fn insert_column(&self, position: i32) {
        unsafe {
            ffi::gtk_grid_insert_column(self.as_ref().to_glib_none().0, position);
        }
    }

    fn insert_next_to(&self, sibling: &impl IsA<Widget>, side: PositionType) {
        unsafe {
            ffi::gtk_grid_insert_next_to(
                self.as_ref().to_glib_none().0,
                sibling.as_ref().to_glib_none().0,
                side.into_glib(),
            );
        }
    }

    fn insert_row(&self, position: i32) {
        unsafe {
            ffi::gtk_grid_insert_row(self.as_ref().to_glib_none().0, position);
        }
    }

    fn query_child(&self, child: &impl IsA<Widget>) -> (i32, i32, i32, i32) {
        unsafe {
            let mut column = mem::MaybeUninit::uninit();
            let mut row = mem::MaybeUninit::uninit();
            let mut width = mem::MaybeUninit::uninit();
            let mut height = mem::MaybeUninit::uninit();
            ffi::gtk_grid_query_child(
                self.as_ref().to_glib_none().0,
                child.as_ref().to_glib_none().0,
                column.as_mut_ptr(),
                row.as_mut_ptr(),
                width.as_mut_ptr(),
                height.as_mut_ptr(),
            );
            (
                column.assume_init(),
                row.assume_init(),
                width.assume_init(),
                height.assume_init(),
            )
        }
    }

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

    fn remove_column(&self, position: i32) {
        unsafe {
            ffi::gtk_grid_remove_column(self.as_ref().to_glib_none().0, position);
        }
    }

    fn remove_row(&self, position: i32) {
        unsafe {
            ffi::gtk_grid_remove_row(self.as_ref().to_glib_none().0, position);
        }
    }

    fn set_baseline_row(&self, row: i32) {
        unsafe {
            ffi::gtk_grid_set_baseline_row(self.as_ref().to_glib_none().0, row);
        }
    }

    fn set_column_homogeneous(&self, homogeneous: bool) {
        unsafe {
            ffi::gtk_grid_set_column_homogeneous(
                self.as_ref().to_glib_none().0,
                homogeneous.into_glib(),
            );
        }
    }

    fn set_column_spacing(&self, spacing: u32) {
        unsafe {
            ffi::gtk_grid_set_column_spacing(self.as_ref().to_glib_none().0, spacing);
        }
    }

    fn set_row_baseline_position(&self, row: i32, pos: BaselinePosition) {
        unsafe {
            ffi::gtk_grid_set_row_baseline_position(
                self.as_ref().to_glib_none().0,
                row,
                pos.into_glib(),
            );
        }
    }

    fn set_row_homogeneous(&self, homogeneous: bool) {
        unsafe {
            ffi::gtk_grid_set_row_homogeneous(
                self.as_ref().to_glib_none().0,
                homogeneous.into_glib(),
            );
        }
    }

    fn set_row_spacing(&self, spacing: u32) {
        unsafe {
            ffi::gtk_grid_set_row_spacing(self.as_ref().to_glib_none().0, spacing);
        }
    }

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

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

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

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

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

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