// 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::Align;
use crate::Buildable;
use crate::CellArea;
use crate::CellLayout;
use crate::CellRenderer;
use crate::Container;
use crate::IconViewDropPosition;
use crate::MovementStep;
use crate::Orientation;
use crate::ResizeMode;
use crate::Scrollable;
use crate::ScrollablePolicy;
use crate::SelectionMode;
use crate::Tooltip;
use crate::TreeIter;
use crate::TreeModel;
use crate::TreePath;
use crate::Widget;
use glib::object::Cast;
use glib::object::IsA;
use glib::object::ObjectExt;
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;
use std::ptr;

glib::wrapper! {
    /// [`IconView`][crate::IconView] provides an alternative view on a [`TreeModel`][crate::TreeModel].
    /// It displays the model as a grid of icons with labels. Like
    /// [`TreeView`][crate::TreeView], it allows to select one or multiple items
    /// (depending on the selection mode, see [`IconViewExt::set_selection_mode()`][crate::prelude::IconViewExt::set_selection_mode()]).
    /// In addition to selection with the arrow keys, [`IconView`][crate::IconView] supports
    /// rubberband selection, which is controlled by dragging the pointer.
    ///
    /// Note that if the tree model is backed by an actual tree store (as
    /// opposed to a flat list where the mapping to icons is obvious),
    /// [`IconView`][crate::IconView] will only display the first level of the tree and
    /// ignore the tree’s branches.
    ///
    /// # CSS nodes
    ///
    ///
    ///
    /// **⚠️ The following code is in plain ⚠️**
    ///
    /// ```plain
    /// iconview.view
    /// ╰── [rubberband]
    /// ```
    ///
    /// GtkIconView has a single CSS node with name iconview and style class .view.
    /// For rubberband selection, a subnode with name rubberband is used.
    ///
    /// # Implements
    ///
    /// [`IconViewExt`][trait@crate::prelude::IconViewExt], [`ContainerExt`][trait@crate::prelude::ContainerExt], [`WidgetExt`][trait@crate::prelude::WidgetExt], [`trait@glib::ObjectExt`], [`BuildableExt`][trait@crate::prelude::BuildableExt], [`CellLayoutExt`][trait@crate::prelude::CellLayoutExt], [`ScrollableExt`][trait@crate::prelude::ScrollableExt], [`WidgetExtManual`][trait@crate::prelude::WidgetExtManual], [`BuildableExtManual`][trait@crate::prelude::BuildableExtManual]
    #[doc(alias = "GtkIconView")]
    pub struct IconView(Object<ffi::GtkIconView, ffi::GtkIconViewClass>) @extends Container, Widget, @implements Buildable, CellLayout, Scrollable;

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

impl IconView {
    /// Creates a new [`IconView`][crate::IconView] widget
    ///
    /// # Returns
    ///
    /// A newly created [`IconView`][crate::IconView] widget
    #[doc(alias = "gtk_icon_view_new")]
    pub fn new() -> IconView {
        assert_initialized_main_thread!();
        unsafe { Widget::from_glib_none(ffi::gtk_icon_view_new()).unsafe_cast() }
    }

    /// Creates a new [`IconView`][crate::IconView] widget using the
    /// specified `area` to layout cells inside the icons.
    /// ## `area`
    /// the [`CellArea`][crate::CellArea] to use to layout cells
    ///
    /// # Returns
    ///
    /// A newly created [`IconView`][crate::IconView] widget
    #[doc(alias = "gtk_icon_view_new_with_area")]
    #[doc(alias = "new_with_area")]
    pub fn with_area<P: IsA<CellArea>>(area: &P) -> IconView {
        skip_assert_initialized!();
        unsafe {
            Widget::from_glib_none(ffi::gtk_icon_view_new_with_area(
                area.as_ref().to_glib_none().0,
            ))
            .unsafe_cast()
        }
    }

    /// Creates a new [`IconView`][crate::IconView] widget with the model `model`.
    /// ## `model`
    /// The model.
    ///
    /// # Returns
    ///
    /// A newly created [`IconView`][crate::IconView] widget.
    #[doc(alias = "gtk_icon_view_new_with_model")]
    #[doc(alias = "new_with_model")]
    pub fn with_model<P: IsA<TreeModel>>(model: &P) -> IconView {
        skip_assert_initialized!();
        unsafe {
            Widget::from_glib_none(ffi::gtk_icon_view_new_with_model(
                model.as_ref().to_glib_none().0,
            ))
            .unsafe_cast()
        }
    }

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

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

#[derive(Clone, Default)]
// rustdoc-stripper-ignore-next
/// A [builder-pattern] type to construct [`IconView`] objects.
///
/// [builder-pattern]: https://doc.rust-lang.org/1.0.0/style/ownership/builders.html
pub struct IconViewBuilder {
    activate_on_single_click: Option<bool>,
    cell_area: Option<CellArea>,
    column_spacing: Option<i32>,
    columns: Option<i32>,
    item_orientation: Option<Orientation>,
    item_padding: Option<i32>,
    item_width: Option<i32>,
    margin: Option<i32>,
    markup_column: Option<i32>,
    model: Option<TreeModel>,
    pixbuf_column: Option<i32>,
    reorderable: Option<bool>,
    row_spacing: Option<i32>,
    selection_mode: Option<SelectionMode>,
    spacing: Option<i32>,
    text_column: Option<i32>,
    tooltip_column: Option<i32>,
    border_width: Option<u32>,
    child: Option<Widget>,
    resize_mode: Option<ResizeMode>,
    app_paintable: Option<bool>,
    can_default: Option<bool>,
    can_focus: Option<bool>,
    events: Option<gdk::EventMask>,
    expand: Option<bool>,
    #[cfg(any(feature = "v3_20", feature = "dox"))]
    #[cfg_attr(feature = "dox", doc(cfg(feature = "v3_20")))]
    focus_on_click: Option<bool>,
    halign: Option<Align>,
    has_default: Option<bool>,
    has_focus: Option<bool>,
    has_tooltip: Option<bool>,
    height_request: Option<i32>,
    hexpand: Option<bool>,
    hexpand_set: Option<bool>,
    is_focus: Option<bool>,
    margin_bottom: Option<i32>,
    margin_end: Option<i32>,
    margin_start: Option<i32>,
    margin_top: Option<i32>,
    name: Option<String>,
    no_show_all: Option<bool>,
    opacity: Option<f64>,
    parent: Option<Container>,
    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>,
    hadjustment: Option<Adjustment>,
    hscroll_policy: Option<ScrollablePolicy>,
    vadjustment: Option<Adjustment>,
    vscroll_policy: Option<ScrollablePolicy>,
}

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

    // rustdoc-stripper-ignore-next
    /// Build the [`IconView`].
    pub fn build(self) -> IconView {
        let mut properties: Vec<(&str, &dyn ToValue)> = vec![];
        if let Some(ref activate_on_single_click) = self.activate_on_single_click {
            properties.push(("activate-on-single-click", activate_on_single_click));
        }
        if let Some(ref cell_area) = self.cell_area {
            properties.push(("cell-area", cell_area));
        }
        if let Some(ref column_spacing) = self.column_spacing {
            properties.push(("column-spacing", column_spacing));
        }
        if let Some(ref columns) = self.columns {
            properties.push(("columns", columns));
        }
        if let Some(ref item_orientation) = self.item_orientation {
            properties.push(("item-orientation", item_orientation));
        }
        if let Some(ref item_padding) = self.item_padding {
            properties.push(("item-padding", item_padding));
        }
        if let Some(ref item_width) = self.item_width {
            properties.push(("item-width", item_width));
        }
        if let Some(ref margin) = self.margin {
            properties.push(("margin", margin));
        }
        if let Some(ref markup_column) = self.markup_column {
            properties.push(("markup-column", markup_column));
        }
        if let Some(ref model) = self.model {
            properties.push(("model", model));
        }
        if let Some(ref pixbuf_column) = self.pixbuf_column {
            properties.push(("pixbuf-column", pixbuf_column));
        }
        if let Some(ref reorderable) = self.reorderable {
            properties.push(("reorderable", reorderable));
        }
        if let Some(ref row_spacing) = self.row_spacing {
            properties.push(("row-spacing", row_spacing));
        }
        if let Some(ref selection_mode) = self.selection_mode {
            properties.push(("selection-mode", selection_mode));
        }
        if let Some(ref spacing) = self.spacing {
            properties.push(("spacing", spacing));
        }
        if let Some(ref text_column) = self.text_column {
            properties.push(("text-column", text_column));
        }
        if let Some(ref tooltip_column) = self.tooltip_column {
            properties.push(("tooltip-column", tooltip_column));
        }
        if let Some(ref border_width) = self.border_width {
            properties.push(("border-width", border_width));
        }
        if let Some(ref child) = self.child {
            properties.push(("child", child));
        }
        if let Some(ref resize_mode) = self.resize_mode {
            properties.push(("resize-mode", resize_mode));
        }
        if let Some(ref app_paintable) = self.app_paintable {
            properties.push(("app-paintable", app_paintable));
        }
        if let Some(ref can_default) = self.can_default {
            properties.push(("can-default", can_default));
        }
        if let Some(ref can_focus) = self.can_focus {
            properties.push(("can-focus", can_focus));
        }
        if let Some(ref events) = self.events {
            properties.push(("events", events));
        }
        if let Some(ref expand) = self.expand {
            properties.push(("expand", expand));
        }
        #[cfg(any(feature = "v3_20", feature = "dox"))]
        if let Some(ref focus_on_click) = self.focus_on_click {
            properties.push(("focus-on-click", focus_on_click));
        }
        if let Some(ref halign) = self.halign {
            properties.push(("halign", halign));
        }
        if let Some(ref has_default) = self.has_default {
            properties.push(("has-default", has_default));
        }
        if let Some(ref has_focus) = self.has_focus {
            properties.push(("has-focus", has_focus));
        }
        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 is_focus) = self.is_focus {
            properties.push(("is-focus", is_focus));
        }
        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 no_show_all) = self.no_show_all {
            properties.push(("no-show-all", no_show_all));
        }
        if let Some(ref opacity) = self.opacity {
            properties.push(("opacity", opacity));
        }
        if let Some(ref parent) = self.parent {
            properties.push(("parent", parent));
        }
        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 hadjustment) = self.hadjustment {
            properties.push(("hadjustment", hadjustment));
        }
        if let Some(ref hscroll_policy) = self.hscroll_policy {
            properties.push(("hscroll-policy", hscroll_policy));
        }
        if let Some(ref vadjustment) = self.vadjustment {
            properties.push(("vadjustment", vadjustment));
        }
        if let Some(ref vscroll_policy) = self.vscroll_policy {
            properties.push(("vscroll-policy", vscroll_policy));
        }
        glib::Object::new::<IconView>(&properties)
            .expect("Failed to create an instance of IconView")
    }

    /// The activate-on-single-click property specifies whether the "item-activated" signal
    /// will be emitted after a single click.
    pub fn activate_on_single_click(mut self, activate_on_single_click: bool) -> Self {
        self.activate_on_single_click = Some(activate_on_single_click);
        self
    }

    /// The [`CellArea`][crate::CellArea] used to layout cell renderers for this view.
    ///
    /// If no area is specified when creating the icon view with [`IconView::with_area()`][crate::IconView::with_area()]
    /// a [`CellAreaBox`][crate::CellAreaBox] will be used.
    pub fn cell_area<P: IsA<CellArea>>(mut self, cell_area: &P) -> Self {
        self.cell_area = Some(cell_area.clone().upcast());
        self
    }

    /// The column-spacing property specifies the space which is inserted between
    /// the columns of the icon view.
    pub fn column_spacing(mut self, column_spacing: i32) -> Self {
        self.column_spacing = Some(column_spacing);
        self
    }

    /// The columns property contains the number of the columns in which the
    /// items should be displayed. If it is -1, the number of columns will
    /// be chosen automatically to fill the available area.
    pub fn columns(mut self, columns: i32) -> Self {
        self.columns = Some(columns);
        self
    }

    /// The item-orientation property specifies how the cells (i.e. the icon and
    /// the text) of the item are positioned relative to each other.
    pub fn item_orientation(mut self, item_orientation: Orientation) -> Self {
        self.item_orientation = Some(item_orientation);
        self
    }

    /// The item-padding property specifies the padding around each
    /// of the icon view's item.
    pub fn item_padding(mut self, item_padding: i32) -> Self {
        self.item_padding = Some(item_padding);
        self
    }

    /// The item-width property specifies the width to use for each item.
    /// If it is set to -1, the icon view will automatically determine a
    /// suitable item size.
    pub fn item_width(mut self, item_width: i32) -> Self {
        self.item_width = Some(item_width);
        self
    }

    /// The margin property specifies the space which is inserted
    /// at the edges of the icon view.
    pub fn margin(mut self, margin: i32) -> Self {
        self.margin = Some(margin);
        self
    }

    /// The ::markup-column property contains the number of the model column
    /// containing markup information to be displayed. The markup column must be
    /// of type `G_TYPE_STRING`. If this property and the :text-column property
    /// are both set to column numbers, it overrides the text column.
    /// If both are set to -1, no texts are displayed.
    pub fn markup_column(mut self, markup_column: i32) -> Self {
        self.markup_column = Some(markup_column);
        self
    }

    pub fn model<P: IsA<TreeModel>>(mut self, model: &P) -> Self {
        self.model = Some(model.clone().upcast());
        self
    }

    /// The ::pixbuf-column property contains the number of the model column
    /// containing the pixbufs which are displayed. The pixbuf column must be
    /// of type `GDK_TYPE_PIXBUF`. Setting this property to -1 turns off the
    /// display of pixbufs.
    pub fn pixbuf_column(mut self, pixbuf_column: i32) -> Self {
        self.pixbuf_column = Some(pixbuf_column);
        self
    }

    /// The reorderable property specifies if the items can be reordered
    /// by DND.
    pub fn reorderable(mut self, reorderable: bool) -> Self {
        self.reorderable = Some(reorderable);
        self
    }

    /// The row-spacing property specifies the space which is inserted between
    /// the rows of the icon view.
    pub fn row_spacing(mut self, row_spacing: i32) -> Self {
        self.row_spacing = Some(row_spacing);
        self
    }

    /// The ::selection-mode property specifies the selection mode of
    /// icon view. If the mode is [`SelectionMode::Multiple`][crate::SelectionMode::Multiple], rubberband selection
    /// is enabled, for the other modes, only keyboard selection is possible.
    pub fn selection_mode(mut self, selection_mode: SelectionMode) -> Self {
        self.selection_mode = Some(selection_mode);
        self
    }

    /// The spacing property specifies the space which is inserted between
    /// the cells (i.e. the icon and the text) of an item.
    pub fn spacing(mut self, spacing: i32) -> Self {
        self.spacing = Some(spacing);
        self
    }

    /// The ::text-column property contains the number of the model column
    /// containing the texts which are displayed. The text column must be
    /// of type `G_TYPE_STRING`. If this property and the :markup-column
    /// property are both set to -1, no texts are displayed.
    pub fn text_column(mut self, text_column: i32) -> Self {
        self.text_column = Some(text_column);
        self
    }

    pub fn tooltip_column(mut self, tooltip_column: i32) -> Self {
        self.tooltip_column = Some(tooltip_column);
        self
    }

    pub fn border_width(mut self, border_width: u32) -> Self {
        self.border_width = Some(border_width);
        self
    }

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

    pub fn resize_mode(mut self, resize_mode: ResizeMode) -> Self {
        self.resize_mode = Some(resize_mode);
        self
    }

    pub fn app_paintable(mut self, app_paintable: bool) -> Self {
        self.app_paintable = Some(app_paintable);
        self
    }

    pub fn can_default(mut self, can_default: bool) -> Self {
        self.can_default = Some(can_default);
        self
    }

    pub fn can_focus(mut self, can_focus: bool) -> Self {
        self.can_focus = Some(can_focus);
        self
    }

    pub fn events(mut self, events: gdk::EventMask) -> Self {
        self.events = Some(events);
        self
    }

    /// Whether to expand in both directions. Setting this sets both `property::Widget::hexpand` and `property::Widget::vexpand`
    pub fn expand(mut self, expand: bool) -> Self {
        self.expand = Some(expand);
        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.
    ///
    /// Before 3.20, several widgets (GtkButton, GtkFileChooserButton,
    /// GtkComboBox) implemented this property individually.
    #[cfg(any(feature = "v3_20", feature = "dox"))]
    #[cfg_attr(feature = "dox", doc(cfg(feature = "v3_20")))]
    pub fn focus_on_click(mut self, focus_on_click: bool) -> Self {
        self.focus_on_click = Some(focus_on_click);
        self
    }

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

    pub fn has_default(mut self, has_default: bool) -> Self {
        self.has_default = Some(has_default);
        self
    }

    pub fn has_focus(mut self, has_focus: bool) -> Self {
        self.has_focus = Some(has_focus);
        self
    }

    /// Enables or disables the emission of `signal::Widget::query-tooltip` 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.
    ///
    /// Note that setting this property to [`true`] for the first time will change
    /// the event masks of the GdkWindows of this widget to include leave-notify
    /// and motion-notify events. This cannot and will not be undone when the
    /// property is set to [`false`] again.
    pub fn has_tooltip(mut self, has_tooltip: bool) -> Self {
        self.has_tooltip = Some(has_tooltip);
        self
    }

    pub fn height_request(mut self, height_request: i32) -> Self {
        self.height_request = Some(height_request);
        self
    }

    /// Whether to expand horizontally. See [`WidgetExt::set_hexpand()`][crate::prelude::WidgetExt::set_hexpand()].
    pub fn hexpand(mut self, hexpand: bool) -> Self {
        self.hexpand = Some(hexpand);
        self
    }

    /// Whether to use the `property::Widget::hexpand` property. See [`WidgetExt::is_hexpand_set()`][crate::prelude::WidgetExt::is_hexpand_set()].
    pub fn hexpand_set(mut self, hexpand_set: bool) -> Self {
        self.hexpand_set = Some(hexpand_set);
        self
    }

    pub fn is_focus(mut self, is_focus: bool) -> Self {
        self.is_focus = Some(is_focus);
        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
    }

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

    pub fn no_show_all(mut self, no_show_all: bool) -> Self {
        self.no_show_all = Some(no_show_all);
        self
    }

    /// The requested opacity of the widget. See [`WidgetExt::set_opacity()`][crate::prelude::WidgetExt::set_opacity()] for
    /// more details about window opacity.
    ///
    /// Before 3.8 this was only available in GtkWindow
    pub fn opacity(mut self, opacity: f64) -> Self {
        self.opacity = Some(opacity);
        self
    }

    pub fn parent<P: IsA<Container>>(mut self, parent: &P) -> Self {
        self.parent = Some(parent.clone().upcast());
        self
    }

    pub fn receives_default(mut self, receives_default: bool) -> Self {
        self.receives_default = Some(receives_default);
        self
    }

    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 the [Pango text markup language][PangoMarkupFormat].
    /// 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, see [`Align`][crate::Align]
    pub fn valign(mut self, valign: Align) -> Self {
        self.valign = Some(valign);
        self
    }

    /// Whether to expand vertically. See [`WidgetExt::set_vexpand()`][crate::prelude::WidgetExt::set_vexpand()].
    pub fn vexpand(mut self, vexpand: bool) -> Self {
        self.vexpand = Some(vexpand);
        self
    }

    /// Whether to use the `property::Widget::vexpand` property. See [`WidgetExt::is_vexpand_set()`][crate::prelude::WidgetExt::is_vexpand_set()].
    pub fn vexpand_set(mut self, vexpand_set: bool) -> Self {
        self.vexpand_set = Some(vexpand_set);
        self
    }

    pub fn visible(mut self, visible: bool) -> Self {
        self.visible = Some(visible);
        self
    }

    pub fn width_request(mut self, width_request: i32) -> Self {
        self.width_request = Some(width_request);
        self
    }

    /// Horizontal [`Adjustment`][crate::Adjustment] of the scrollable widget. This adjustment is
    /// shared between the scrollable widget and its parent.
    pub fn hadjustment<P: IsA<Adjustment>>(mut self, hadjustment: &P) -> Self {
        self.hadjustment = Some(hadjustment.clone().upcast());
        self
    }

    /// Determines whether horizontal scrolling should start once the scrollable
    /// widget is allocated less than its minimum width or less than its natural width.
    pub fn hscroll_policy(mut self, hscroll_policy: ScrollablePolicy) -> Self {
        self.hscroll_policy = Some(hscroll_policy);
        self
    }

    /// Verical [`Adjustment`][crate::Adjustment] of the scrollable widget. This adjustment is shared
    /// between the scrollable widget and its parent.
    pub fn vadjustment<P: IsA<Adjustment>>(mut self, vadjustment: &P) -> Self {
        self.vadjustment = Some(vadjustment.clone().upcast());
        self
    }

    /// Determines whether vertical scrolling should start once the scrollable
    /// widget is allocated less than its minimum height or less than its natural height.
    pub fn vscroll_policy(mut self, vscroll_policy: ScrollablePolicy) -> Self {
        self.vscroll_policy = Some(vscroll_policy);
        self
    }
}

pub const NONE_ICON_VIEW: Option<&IconView> = None;

/// Trait containing all [`struct@IconView`] methods.
///
/// # Implementors
///
/// [`IconView`][struct@crate::IconView]
pub trait IconViewExt: 'static {
    /// Converts widget coordinates to coordinates for the bin_window,
    /// as expected by e.g. [`path_at_pos()`][Self::path_at_pos()].
    /// ## `wx`
    /// X coordinate relative to the widget
    /// ## `wy`
    /// Y coordinate relative to the widget
    ///
    /// # Returns
    ///
    ///
    /// ## `bx`
    /// return location for bin_window X coordinate
    ///
    /// ## `by`
    /// return location for bin_window Y coordinate
    #[doc(alias = "gtk_icon_view_convert_widget_to_bin_window_coords")]
    fn convert_widget_to_bin_window_coords(&self, wx: i32, wy: i32) -> (i32, i32);

    /// Creates a [`cairo::Surface`][crate::cairo::Surface] representation of the item at `path`.
    /// This image is used for a drag icon.
    /// ## `path`
    /// a [`TreePath`][crate::TreePath] in `self`
    ///
    /// # Returns
    ///
    /// a newly-allocated surface of the drag icon.
    #[doc(alias = "gtk_icon_view_create_drag_icon")]
    fn create_drag_icon(&self, path: &TreePath) -> Option<cairo::Surface>;

    /// Gets the setting set by [`set_activate_on_single_click()`][Self::set_activate_on_single_click()].
    ///
    /// # Returns
    ///
    /// [`true`] if item-activated will be emitted on a single click
    #[doc(alias = "gtk_icon_view_get_activate_on_single_click")]
    #[doc(alias = "get_activate_on_single_click")]
    fn activates_on_single_click(&self) -> bool;

    /// Fills the bounding rectangle in widget coordinates for the cell specified by
    /// `path` and `cell`. If `cell` is [`None`] the main cell area is used.
    ///
    /// This function is only valid if `self` is realized.
    /// ## `path`
    /// a [`TreePath`][crate::TreePath]
    /// ## `cell`
    /// a [`CellRenderer`][crate::CellRenderer] or [`None`]
    ///
    /// # Returns
    ///
    /// [`false`] if there is no such item, [`true`] otherwise
    ///
    /// ## `rect`
    /// rectangle to fill with cell rect
    #[doc(alias = "gtk_icon_view_get_cell_rect")]
    #[doc(alias = "get_cell_rect")]
    fn cell_rect<P: IsA<CellRenderer>>(
        &self,
        path: &TreePath,
        cell: Option<&P>,
    ) -> Option<gdk::Rectangle>;

    /// Returns the value of the ::column-spacing property.
    ///
    /// # Returns
    ///
    /// the space between columns
    #[doc(alias = "gtk_icon_view_get_column_spacing")]
    #[doc(alias = "get_column_spacing")]
    fn column_spacing(&self) -> i32;

    /// Returns the value of the ::columns property.
    ///
    /// # Returns
    ///
    /// the number of columns, or -1
    #[doc(alias = "gtk_icon_view_get_columns")]
    #[doc(alias = "get_columns")]
    fn columns(&self) -> i32;

    /// Fills in `path` and `cell` with the current cursor path and cell.
    /// If the cursor isn’t currently set, then *`path` will be [`None`].
    /// If no cell currently has focus, then *`cell` will be [`None`].
    ///
    /// The returned [`TreePath`][crate::TreePath] must be freed with `gtk_tree_path_free()`.
    ///
    /// # Returns
    ///
    /// [`true`] if the cursor is set.
    ///
    /// ## `path`
    /// Return location for the current
    ///  cursor path, or [`None`]
    ///
    /// ## `cell`
    /// Return location the current
    ///  focus cell, or [`None`]
    #[doc(alias = "gtk_icon_view_get_cursor")]
    #[doc(alias = "get_cursor")]
    fn cursor(&self) -> Option<(TreePath, CellRenderer)>;

    /// Determines the destination item for a given position.
    /// ## `drag_x`
    /// the position to determine the destination item for
    /// ## `drag_y`
    /// the position to determine the destination item for
    ///
    /// # Returns
    ///
    /// whether there is an item at the given position.
    ///
    /// ## `path`
    /// Return location for the path of the item,
    ///  or [`None`].
    ///
    /// ## `pos`
    /// Return location for the drop position, or [`None`]
    #[doc(alias = "gtk_icon_view_get_dest_item_at_pos")]
    #[doc(alias = "get_dest_item_at_pos")]
    fn dest_item_at_pos(
        &self,
        drag_x: i32,
        drag_y: i32,
    ) -> Option<(TreePath, IconViewDropPosition)>;

    /// Gets information about the item that is highlighted for feedback.
    ///
    /// # Returns
    ///
    ///
    /// ## `path`
    /// Return location for the path of
    ///  the highlighted item, or [`None`].
    ///
    /// ## `pos`
    /// Return location for the drop position, or [`None`]
    #[doc(alias = "gtk_icon_view_get_drag_dest_item")]
    #[doc(alias = "get_drag_dest_item")]
    fn drag_dest_item(&self) -> (TreePath, IconViewDropPosition);

    /// Finds the path at the point (`x`, `y`), relative to bin_window coordinates.
    /// In contrast to [`path_at_pos()`][Self::path_at_pos()], this function also
    /// obtains the cell at the specified position. The returned path should
    /// be freed with `gtk_tree_path_free()`.
    /// See [`convert_widget_to_bin_window_coords()`][Self::convert_widget_to_bin_window_coords()] for converting
    /// widget coordinates to bin_window coordinates.
    /// ## `x`
    /// The x position to be identified
    /// ## `y`
    /// The y position to be identified
    ///
    /// # Returns
    ///
    /// [`true`] if an item exists at the specified position
    ///
    /// ## `path`
    /// Return location for the path, or [`None`]
    ///
    /// ## `cell`
    /// Return location for the renderer
    ///  responsible for the cell at (`x`, `y`), or [`None`]
    #[doc(alias = "gtk_icon_view_get_item_at_pos")]
    #[doc(alias = "get_item_at_pos")]
    fn item_at_pos(&self, x: i32, y: i32) -> Option<(TreePath, CellRenderer)>;

    /// Gets the column in which the item `path` is currently
    /// displayed. Column numbers start at 0.
    /// ## `path`
    /// the [`TreePath`][crate::TreePath] of the item
    ///
    /// # Returns
    ///
    /// The column in which the item is displayed
    #[doc(alias = "gtk_icon_view_get_item_column")]
    #[doc(alias = "get_item_column")]
    fn item_column(&self, path: &TreePath) -> i32;

    /// Returns the value of the ::item-orientation property which determines
    /// whether the labels are drawn beside the icons instead of below.
    ///
    /// # Returns
    ///
    /// the relative position of texts and icons
    #[doc(alias = "gtk_icon_view_get_item_orientation")]
    #[doc(alias = "get_item_orientation")]
    fn item_orientation(&self) -> Orientation;

    /// Returns the value of the ::item-padding property.
    ///
    /// # Returns
    ///
    /// the padding around items
    #[doc(alias = "gtk_icon_view_get_item_padding")]
    #[doc(alias = "get_item_padding")]
    fn item_padding(&self) -> i32;

    /// Gets the row in which the item `path` is currently
    /// displayed. Row numbers start at 0.
    /// ## `path`
    /// the [`TreePath`][crate::TreePath] of the item
    ///
    /// # Returns
    ///
    /// The row in which the item is displayed
    #[doc(alias = "gtk_icon_view_get_item_row")]
    #[doc(alias = "get_item_row")]
    fn item_row(&self, path: &TreePath) -> i32;

    /// Returns the value of the ::item-width property.
    ///
    /// # Returns
    ///
    /// the width of a single item, or -1
    #[doc(alias = "gtk_icon_view_get_item_width")]
    #[doc(alias = "get_item_width")]
    fn item_width(&self) -> i32;

    /// Returns the value of the ::margin property.
    ///
    /// # Returns
    ///
    /// the space at the borders
    #[doc(alias = "gtk_icon_view_get_margin")]
    #[doc(alias = "get_margin")]
    fn margin(&self) -> i32;

    /// Returns the column with markup text for `self`.
    ///
    /// # Returns
    ///
    /// the markup column, or -1 if it’s unset.
    #[doc(alias = "gtk_icon_view_get_markup_column")]
    #[doc(alias = "get_markup_column")]
    fn markup_column(&self) -> i32;

    /// Returns the model the [`IconView`][crate::IconView] is based on. Returns [`None`] if the
    /// model is unset.
    ///
    /// # Returns
    ///
    /// A [`TreeModel`][crate::TreeModel], or [`None`] if none is
    ///  currently being used.
    #[doc(alias = "gtk_icon_view_get_model")]
    #[doc(alias = "get_model")]
    fn model(&self) -> Option<TreeModel>;

    /// Finds the path at the point (`x`, `y`), relative to bin_window coordinates.
    /// See [`item_at_pos()`][Self::item_at_pos()], if you are also interested in
    /// the cell at the specified position.
    /// See [`convert_widget_to_bin_window_coords()`][Self::convert_widget_to_bin_window_coords()] for converting
    /// widget coordinates to bin_window coordinates.
    /// ## `x`
    /// The x position to be identified
    /// ## `y`
    /// The y position to be identified
    ///
    /// # Returns
    ///
    /// The [`TreePath`][crate::TreePath] corresponding
    /// to the icon or [`None`] if no icon exists at that position.
    #[doc(alias = "gtk_icon_view_get_path_at_pos")]
    #[doc(alias = "get_path_at_pos")]
    fn path_at_pos(&self, x: i32, y: i32) -> Option<TreePath>;

    /// Returns the column with pixbufs for `self`.
    ///
    /// # Returns
    ///
    /// the pixbuf column, or -1 if it’s unset.
    #[doc(alias = "gtk_icon_view_get_pixbuf_column")]
    #[doc(alias = "get_pixbuf_column")]
    fn pixbuf_column(&self) -> i32;

    /// Retrieves whether the user can reorder the list via drag-and-drop.
    /// See [`set_reorderable()`][Self::set_reorderable()].
    ///
    /// # Returns
    ///
    /// [`true`] if the list can be reordered.
    #[doc(alias = "gtk_icon_view_get_reorderable")]
    #[doc(alias = "get_reorderable")]
    fn is_reorderable(&self) -> bool;

    /// Returns the value of the ::row-spacing property.
    ///
    /// # Returns
    ///
    /// the space between rows
    #[doc(alias = "gtk_icon_view_get_row_spacing")]
    #[doc(alias = "get_row_spacing")]
    fn row_spacing(&self) -> i32;

    /// Creates a list of paths of all selected items. Additionally, if you are
    /// planning on modifying the model after calling this function, you may
    /// want to convert the returned list into a list of `GtkTreeRowReferences`.
    /// To do this, you can use [`TreeRowReference::new()`][crate::TreeRowReference::new()].
    ///
    /// To free the return value, use:
    ///
    ///
    /// **⚠️ The following code is in C ⚠️**
    ///
    /// ```C
    /// g_list_free_full (list, (GDestroyNotify) gtk_tree_path_free);
    /// ```
    ///
    /// # Returns
    ///
    /// A `GList` containing a [`TreePath`][crate::TreePath] for each selected row.
    #[doc(alias = "gtk_icon_view_get_selected_items")]
    #[doc(alias = "get_selected_items")]
    fn selected_items(&self) -> Vec<TreePath>;

    /// Gets the selection mode of the `self`.
    ///
    /// # Returns
    ///
    /// the current selection mode
    #[doc(alias = "gtk_icon_view_get_selection_mode")]
    #[doc(alias = "get_selection_mode")]
    fn selection_mode(&self) -> SelectionMode;

    /// Returns the value of the ::spacing property.
    ///
    /// # Returns
    ///
    /// the space between cells
    #[doc(alias = "gtk_icon_view_get_spacing")]
    #[doc(alias = "get_spacing")]
    fn spacing(&self) -> i32;

    /// Returns the column with text for `self`.
    ///
    /// # Returns
    ///
    /// the text column, or -1 if it’s unset.
    #[doc(alias = "gtk_icon_view_get_text_column")]
    #[doc(alias = "get_text_column")]
    fn text_column(&self) -> i32;

    /// Returns the column of `self`’s model which is being used for
    /// displaying tooltips on `self`’s rows.
    ///
    /// # Returns
    ///
    /// the index of the tooltip column that is currently being
    /// used, or -1 if this is disabled.
    #[doc(alias = "gtk_icon_view_get_tooltip_column")]
    #[doc(alias = "get_tooltip_column")]
    fn tooltip_column(&self) -> i32;

    /// This function is supposed to be used in a `signal::Widget::query-tooltip`
    /// signal handler for [`IconView`][crate::IconView]. The `x`, `y` and `keyboard_tip` values
    /// which are received in the signal handler, should be passed to this
    /// function without modification.
    ///
    /// The return value indicates whether there is an icon view item at the given
    /// coordinates ([`true`]) or not ([`false`]) for mouse tooltips. For keyboard
    /// tooltips the item returned will be the cursor item. When [`true`], then any of
    /// `model`, `path` and `iter` which have been provided will be set to point to
    /// that row and the corresponding model. `x` and `y` will always be converted
    /// to be relative to `self`’s bin_window if `keyboard_tooltip` is [`false`].
    /// ## `x`
    /// the x coordinate (relative to widget coordinates)
    /// ## `y`
    /// the y coordinate (relative to widget coordinates)
    /// ## `keyboard_tip`
    /// whether this is a keyboard tooltip or not
    ///
    /// # Returns
    ///
    /// whether or not the given tooltip context points to a item
    ///
    /// ## `model`
    /// a pointer to receive a
    ///  [`TreeModel`][crate::TreeModel] or [`None`]
    ///
    /// ## `path`
    /// a pointer to receive a [`TreePath`][crate::TreePath] or [`None`]
    ///
    /// ## `iter`
    /// a pointer to receive a [`TreeIter`][crate::TreeIter] or [`None`]
    #[doc(alias = "gtk_icon_view_get_tooltip_context")]
    #[doc(alias = "get_tooltip_context")]
    fn tooltip_context(
        &self,
        x: &mut i32,
        y: &mut i32,
        keyboard_tip: bool,
    ) -> Option<(TreeModel, TreePath, TreeIter)>;

    /// Sets `start_path` and `end_path` to be the first and last visible path.
    /// Note that there may be invisible paths in between.
    ///
    /// Both paths should be freed with `gtk_tree_path_free()` after use.
    ///
    /// # Returns
    ///
    /// [`true`], if valid paths were placed in `start_path` and `end_path`
    ///
    /// ## `start_path`
    /// Return location for start of region,
    ///  or [`None`]
    ///
    /// ## `end_path`
    /// Return location for end of region, or [`None`]
    #[doc(alias = "gtk_icon_view_get_visible_range")]
    #[doc(alias = "get_visible_range")]
    fn visible_range(&self) -> Option<(TreePath, TreePath)>;

    /// Activates the item determined by `path`.
    /// ## `path`
    /// The [`TreePath`][crate::TreePath] to be activated
    #[doc(alias = "gtk_icon_view_item_activated")]
    fn item_activated(&self, path: &TreePath);

    /// Returns [`true`] if the icon pointed to by `path` is currently
    /// selected. If `path` does not point to a valid location, [`false`] is returned.
    /// ## `path`
    /// A [`TreePath`][crate::TreePath] to check selection on.
    ///
    /// # Returns
    ///
    /// [`true`] if `path` is selected.
    #[doc(alias = "gtk_icon_view_path_is_selected")]
    fn path_is_selected(&self, path: &TreePath) -> bool;

    /// Moves the alignments of `self` to the position specified by `path`.
    /// `row_align` determines where the row is placed, and `col_align` determines
    /// where `column` is placed. Both are expected to be between 0.0 and 1.0.
    /// 0.0 means left/top alignment, 1.0 means right/bottom alignment, 0.5 means
    /// center.
    ///
    /// If `use_align` is [`false`], then the alignment arguments are ignored, and the
    /// tree does the minimum amount of work to scroll the item onto the screen.
    /// This means that the item will be scrolled to the edge closest to its current
    /// position. If the item is currently visible on the screen, nothing is done.
    ///
    /// This function only works if the model is set, and `path` is a valid row on
    /// the model. If the model changes before the `self` is realized, the
    /// centered path will be modified to reflect this change.
    /// ## `path`
    /// The path of the item to move to.
    /// ## `use_align`
    /// whether to use alignment arguments, or [`false`].
    /// ## `row_align`
    /// The vertical alignment of the item specified by `path`.
    /// ## `col_align`
    /// The horizontal alignment of the item specified by `path`.
    #[doc(alias = "gtk_icon_view_scroll_to_path")]
    fn scroll_to_path(&self, path: &TreePath, use_align: bool, row_align: f32, col_align: f32);

    /// Selects all the icons. `self` must has its selection mode set
    /// to [`SelectionMode::Multiple`][crate::SelectionMode::Multiple].
    #[doc(alias = "gtk_icon_view_select_all")]
    fn select_all(&self);

    /// Selects the row at `path`.
    /// ## `path`
    /// The [`TreePath`][crate::TreePath] to be selected.
    #[doc(alias = "gtk_icon_view_select_path")]
    fn select_path(&self, path: &TreePath);

    /// Calls a function for each selected icon. Note that the model or
    /// selection cannot be modified from within this function.
    /// ## `func`
    /// The function to call for each selected icon.
    #[doc(alias = "gtk_icon_view_selected_foreach")]
    fn selected_foreach<P: FnMut(&IconView, &TreePath)>(&self, func: P);

    /// Causes the `signal::IconView::item-activated` signal to be emitted on
    /// a single click instead of a double click.
    /// ## `single`
    /// [`true`] to emit item-activated on a single click
    #[doc(alias = "gtk_icon_view_set_activate_on_single_click")]
    fn set_activate_on_single_click(&self, single: bool);

    /// Sets the ::column-spacing property which specifies the space
    /// which is inserted between the columns of the icon view.
    /// ## `column_spacing`
    /// the column spacing
    #[doc(alias = "gtk_icon_view_set_column_spacing")]
    fn set_column_spacing(&self, column_spacing: i32);

    /// Sets the ::columns property which determines in how
    /// many columns the icons are arranged. If `columns` is
    /// -1, the number of columns will be chosen automatically
    /// to fill the available area.
    /// ## `columns`
    /// the number of columns
    #[doc(alias = "gtk_icon_view_set_columns")]
    fn set_columns(&self, columns: i32);

    /// Sets the current keyboard focus to be at `path`, and selects it. This is
    /// useful when you want to focus the user’s attention on a particular item.
    /// If `cell` is not [`None`], then focus is given to the cell specified by
    /// it. Additionally, if `start_editing` is [`true`], then editing should be
    /// started in the specified cell.
    ///
    /// This function is often followed by `gtk_widget_grab_focus
    /// (icon_view)` in order to give keyboard focus to the widget.
    /// Please note that editing can only happen when the widget is realized.
    /// ## `path`
    /// A [`TreePath`][crate::TreePath]
    /// ## `cell`
    /// One of the cell renderers of `self`, or [`None`]
    /// ## `start_editing`
    /// [`true`] if the specified cell should start being edited.
    #[doc(alias = "gtk_icon_view_set_cursor")]
    fn set_cursor<P: IsA<CellRenderer>>(
        &self,
        path: &TreePath,
        cell: Option<&P>,
        start_editing: bool,
    );

    /// Sets the item that is highlighted for feedback.
    /// ## `path`
    /// The path of the item to highlight, or [`None`].
    /// ## `pos`
    /// Specifies where to drop, relative to the item
    #[doc(alias = "gtk_icon_view_set_drag_dest_item")]
    fn set_drag_dest_item(&self, path: Option<&TreePath>, pos: IconViewDropPosition);

    /// Sets the ::item-orientation property which determines whether the labels
    /// are drawn beside the icons instead of below.
    /// ## `orientation`
    /// the relative position of texts and icons
    #[doc(alias = "gtk_icon_view_set_item_orientation")]
    fn set_item_orientation(&self, orientation: Orientation);

    /// Sets the `property::IconView::item-padding` property which specifies the padding
    /// around each of the icon view’s items.
    /// ## `item_padding`
    /// the item padding
    #[doc(alias = "gtk_icon_view_set_item_padding")]
    fn set_item_padding(&self, item_padding: i32);

    /// Sets the ::item-width property which specifies the width
    /// to use for each item. If it is set to -1, the icon view will
    /// automatically determine a suitable item size.
    /// ## `item_width`
    /// the width for each item
    #[doc(alias = "gtk_icon_view_set_item_width")]
    fn set_item_width(&self, item_width: i32);

    /// Sets the ::margin property which specifies the space
    /// which is inserted at the top, bottom, left and right
    /// of the icon view.
    /// ## `margin`
    /// the margin
    #[doc(alias = "gtk_icon_view_set_margin")]
    fn set_margin(&self, margin: i32);

    /// Sets the column with markup information for `self` to be
    /// `column`. The markup column must be of type `G_TYPE_STRING`.
    /// If the markup column is set to something, it overrides
    /// the text column set by [`set_text_column()`][Self::set_text_column()].
    /// ## `column`
    /// A column in the currently used model, or -1 to display no text
    #[doc(alias = "gtk_icon_view_set_markup_column")]
    fn set_markup_column(&self, column: i32);

    /// Sets the model for a [`IconView`][crate::IconView].
    /// If the `self` already has a model set, it will remove
    /// it before setting the new model. If `model` is [`None`], then
    /// it will unset the old model.
    /// ## `model`
    /// The model.
    #[doc(alias = "gtk_icon_view_set_model")]
    fn set_model<P: IsA<TreeModel>>(&self, model: Option<&P>);

    /// Sets the column with pixbufs for `self` to be `column`. The pixbuf
    /// column must be of type `GDK_TYPE_PIXBUF`
    /// ## `column`
    /// A column in the currently used model, or -1 to disable
    #[doc(alias = "gtk_icon_view_set_pixbuf_column")]
    fn set_pixbuf_column(&self, column: i32);

    /// This function is a convenience function to allow you to reorder models that
    /// support the `GtkTreeDragSourceIface` and the `GtkTreeDragDestIface`. Both
    /// [`TreeStore`][crate::TreeStore] and [`ListStore`][crate::ListStore] support these. If `reorderable` is [`true`], then
    /// the user can reorder the model by dragging and dropping rows. The
    /// developer can listen to these changes by connecting to the model's
    /// row_inserted and row_deleted signals. The reordering is implemented by setting up
    /// the icon view as a drag source and destination. Therefore, drag and
    /// drop can not be used in a reorderable view for any other purpose.
    ///
    /// This function does not give you any degree of control over the order -- any
    /// reordering is allowed. If more control is needed, you should probably
    /// handle drag and drop manually.
    /// ## `reorderable`
    /// [`true`], if the list of items can be reordered.
    #[doc(alias = "gtk_icon_view_set_reorderable")]
    fn set_reorderable(&self, reorderable: bool);

    /// Sets the ::row-spacing property which specifies the space
    /// which is inserted between the rows of the icon view.
    /// ## `row_spacing`
    /// the row spacing
    #[doc(alias = "gtk_icon_view_set_row_spacing")]
    fn set_row_spacing(&self, row_spacing: i32);

    /// Sets the selection mode of the `self`.
    /// ## `mode`
    /// The selection mode
    #[doc(alias = "gtk_icon_view_set_selection_mode")]
    fn set_selection_mode(&self, mode: SelectionMode);

    /// Sets the ::spacing property which specifies the space
    /// which is inserted between the cells (i.e. the icon and
    /// the text) of an item.
    /// ## `spacing`
    /// the spacing
    #[doc(alias = "gtk_icon_view_set_spacing")]
    fn set_spacing(&self, spacing: i32);

    /// Sets the column with text for `self` to be `column`. The text
    /// column must be of type `G_TYPE_STRING`.
    /// ## `column`
    /// A column in the currently used model, or -1 to display no text
    #[doc(alias = "gtk_icon_view_set_text_column")]
    fn set_text_column(&self, column: i32);

    /// Sets the tip area of `tooltip` to the area which `cell` occupies in
    /// the item pointed to by `path`. See also [`Tooltip::set_tip_area()`][crate::Tooltip::set_tip_area()].
    ///
    /// See also [`set_tooltip_column()`][Self::set_tooltip_column()] for a simpler alternative.
    /// ## `tooltip`
    /// a [`Tooltip`][crate::Tooltip]
    /// ## `path`
    /// a [`TreePath`][crate::TreePath]
    /// ## `cell`
    /// a [`CellRenderer`][crate::CellRenderer] or [`None`]
    #[doc(alias = "gtk_icon_view_set_tooltip_cell")]
    fn set_tooltip_cell<P: IsA<CellRenderer>>(
        &self,
        tooltip: &Tooltip,
        path: &TreePath,
        cell: Option<&P>,
    );

    /// If you only plan to have simple (text-only) tooltips on full items, you
    /// can use this function to have [`IconView`][crate::IconView] handle these automatically
    /// for you. `column` should be set to the column in `self`’s model
    /// containing the tooltip texts, or -1 to disable this feature.
    ///
    /// When enabled, `property::Widget::has-tooltip` will be set to [`true`] and
    /// `self` will connect a `signal::Widget::query-tooltip` signal handler.
    ///
    /// Note that the signal handler sets the text with [`Tooltip::set_markup()`][crate::Tooltip::set_markup()],
    /// so &, <, etc have to be escaped in the text.
    /// ## `column`
    /// an integer, which is a valid column number for `self`’s model
    #[doc(alias = "gtk_icon_view_set_tooltip_column")]
    fn set_tooltip_column(&self, column: i32);

    /// Sets the tip area of `tooltip` to be the area covered by the item at `path`.
    /// See also [`set_tooltip_column()`][Self::set_tooltip_column()] for a simpler alternative.
    /// See also [`Tooltip::set_tip_area()`][crate::Tooltip::set_tip_area()].
    /// ## `tooltip`
    /// a [`Tooltip`][crate::Tooltip]
    /// ## `path`
    /// a [`TreePath`][crate::TreePath]
    #[doc(alias = "gtk_icon_view_set_tooltip_item")]
    fn set_tooltip_item(&self, tooltip: &Tooltip, path: &TreePath);

    /// Unselects all the icons.
    #[doc(alias = "gtk_icon_view_unselect_all")]
    fn unselect_all(&self);

    /// Unselects the row at `path`.
    /// ## `path`
    /// The [`TreePath`][crate::TreePath] to be unselected.
    #[doc(alias = "gtk_icon_view_unselect_path")]
    fn unselect_path(&self, path: &TreePath);

    /// Undoes the effect of `gtk_icon_view_enable_model_drag_dest()`. Calling this
    /// method sets `property::IconView::reorderable` to [`false`].
    #[doc(alias = "gtk_icon_view_unset_model_drag_dest")]
    fn unset_model_drag_dest(&self);

    /// Undoes the effect of `gtk_icon_view_enable_model_drag_source()`. Calling this
    /// method sets `property::IconView::reorderable` to [`false`].
    #[doc(alias = "gtk_icon_view_unset_model_drag_source")]
    fn unset_model_drag_source(&self);

    /// The [`CellArea`][crate::CellArea] used to layout cell renderers for this view.
    ///
    /// If no area is specified when creating the icon view with [`IconView::with_area()`][crate::IconView::with_area()]
    /// a [`CellAreaBox`][crate::CellAreaBox] will be used.
    #[doc(alias = "cell-area")]
    fn cell_area(&self) -> Option<CellArea>;

    /// A [keybinding signal][GtkBindingSignal]
    /// which gets emitted when the user activates the currently
    /// focused item.
    ///
    /// Applications should not connect to it, but may emit it with
    /// `g_signal_emit_by_name()` if they need to control activation
    /// programmatically.
    ///
    /// The default bindings for this signal are Space, Return and Enter.
    #[doc(alias = "activate-cursor-item")]
    fn connect_activate_cursor_item<F: Fn(&Self) -> bool + 'static>(&self, f: F)
        -> SignalHandlerId;

    fn emit_activate_cursor_item(&self) -> bool;

    /// The ::item-activated signal is emitted when the method
    /// [`item_activated()`][Self::item_activated()] is called, when the user double
    /// clicks an item with the "activate-on-single-click" property set
    /// to [`false`], or when the user single clicks an item when the
    /// "activate-on-single-click" property set to [`true`]. It is also
    /// emitted when a non-editable item is selected and one of the keys:
    /// Space, Return or Enter is pressed.
    /// ## `path`
    /// the [`TreePath`][crate::TreePath] for the activated item
    #[doc(alias = "item-activated")]
    fn connect_item_activated<F: Fn(&Self, &TreePath) + 'static>(&self, f: F) -> SignalHandlerId;

    /// The ::move-cursor signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted when the user initiates a cursor movement.
    ///
    /// Applications should not connect to it, but may emit it with
    /// `g_signal_emit_by_name()` if they need to control the cursor
    /// programmatically.
    ///
    /// The default bindings for this signal include
    /// - Arrow keys which move by individual steps
    /// - Home/End keys which move to the first/last item
    /// - PageUp/PageDown which move by "pages"
    /// All of these will extend the selection when combined with
    /// the Shift modifier.
    /// ## `step`
    /// the granularity of the move, as a [`MovementStep`][crate::MovementStep]
    /// ## `count`
    /// the number of `step` units to move
    #[doc(alias = "move-cursor")]
    fn connect_move_cursor<F: Fn(&Self, MovementStep, i32) -> bool + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId;

    fn emit_move_cursor(&self, step: MovementStep, count: i32) -> bool;

    /// A [keybinding signal][GtkBindingSignal]
    /// which gets emitted when the user selects all items.
    ///
    /// Applications should not connect to it, but may emit it with
    /// `g_signal_emit_by_name()` if they need to control selection
    /// programmatically.
    ///
    /// The default binding for this signal is Ctrl-a.
    #[doc(alias = "select-all")]
    fn connect_select_all<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;

    fn emit_select_all(&self);

    /// A [keybinding signal][GtkBindingSignal]
    /// which gets emitted when the user selects the item that is currently
    /// focused.
    ///
    /// Applications should not connect to it, but may emit it with
    /// `g_signal_emit_by_name()` if they need to control selection
    /// programmatically.
    ///
    /// There is no default binding for this signal.
    #[doc(alias = "select-cursor-item")]
    fn connect_select_cursor_item<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;

    fn emit_select_cursor_item(&self);

    /// The ::selection-changed signal is emitted when the selection
    /// (i.e. the set of selected items) changes.
    #[doc(alias = "selection-changed")]
    fn connect_selection_changed<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;

    /// A [keybinding signal][GtkBindingSignal]
    /// which gets emitted when the user toggles whether the currently
    /// focused item is selected or not. The exact effect of this
    /// depend on the selection mode.
    ///
    /// Applications should not connect to it, but may emit it with
    /// `g_signal_emit_by_name()` if they need to control selection
    /// programmatically.
    ///
    /// There is no default binding for this signal is Ctrl-Space.
    #[doc(alias = "toggle-cursor-item")]
    fn connect_toggle_cursor_item<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;

    fn emit_toggle_cursor_item(&self);

    /// A [keybinding signal][GtkBindingSignal]
    /// which gets emitted when the user unselects all items.
    ///
    /// Applications should not connect to it, but may emit it with
    /// `g_signal_emit_by_name()` if they need to control selection
    /// programmatically.
    ///
    /// The default binding for this signal is Ctrl-Shift-a.
    #[doc(alias = "unselect-all")]
    fn connect_unselect_all<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;

    fn emit_unselect_all(&self);

    #[doc(alias = "activate-on-single-click")]
    fn connect_activate_on_single_click_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 = "columns")]
    fn connect_columns_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;

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

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

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

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

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

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

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

    #[doc(alias = "reorderable")]
    fn connect_reorderable_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;

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

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

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

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

impl<O: IsA<IconView>> IconViewExt for O {
    fn convert_widget_to_bin_window_coords(&self, wx: i32, wy: i32) -> (i32, i32) {
        unsafe {
            let mut bx = mem::MaybeUninit::uninit();
            let mut by = mem::MaybeUninit::uninit();
            ffi::gtk_icon_view_convert_widget_to_bin_window_coords(
                self.as_ref().to_glib_none().0,
                wx,
                wy,
                bx.as_mut_ptr(),
                by.as_mut_ptr(),
            );
            let bx = bx.assume_init();
            let by = by.assume_init();
            (bx, by)
        }
    }

    fn create_drag_icon(&self, path: &TreePath) -> Option<cairo::Surface> {
        unsafe {
            from_glib_full(ffi::gtk_icon_view_create_drag_icon(
                self.as_ref().to_glib_none().0,
                mut_override(path.to_glib_none().0),
            ))
        }
    }

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

    fn cell_rect<P: IsA<CellRenderer>>(
        &self,
        path: &TreePath,
        cell: Option<&P>,
    ) -> Option<gdk::Rectangle> {
        unsafe {
            let mut rect = gdk::Rectangle::uninitialized();
            let ret = from_glib(ffi::gtk_icon_view_get_cell_rect(
                self.as_ref().to_glib_none().0,
                mut_override(path.to_glib_none().0),
                cell.map(|p| p.as_ref()).to_glib_none().0,
                rect.to_glib_none_mut().0,
            ));
            if ret {
                Some(rect)
            } else {
                None
            }
        }
    }

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

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

    fn cursor(&self) -> Option<(TreePath, CellRenderer)> {
        unsafe {
            let mut path = ptr::null_mut();
            let mut cell = ptr::null_mut();
            let ret = from_glib(ffi::gtk_icon_view_get_cursor(
                self.as_ref().to_glib_none().0,
                &mut path,
                &mut cell,
            ));
            if ret {
                Some((from_glib_full(path), from_glib_none(cell)))
            } else {
                None
            }
        }
    }

    fn dest_item_at_pos(
        &self,
        drag_x: i32,
        drag_y: i32,
    ) -> Option<(TreePath, IconViewDropPosition)> {
        unsafe {
            let mut path = ptr::null_mut();
            let mut pos = mem::MaybeUninit::uninit();
            let ret = from_glib(ffi::gtk_icon_view_get_dest_item_at_pos(
                self.as_ref().to_glib_none().0,
                drag_x,
                drag_y,
                &mut path,
                pos.as_mut_ptr(),
            ));
            let pos = pos.assume_init();
            if ret {
                Some((from_glib_full(path), from_glib(pos)))
            } else {
                None
            }
        }
    }

    fn drag_dest_item(&self) -> (TreePath, IconViewDropPosition) {
        unsafe {
            let mut path = ptr::null_mut();
            let mut pos = mem::MaybeUninit::uninit();
            ffi::gtk_icon_view_get_drag_dest_item(
                self.as_ref().to_glib_none().0,
                &mut path,
                pos.as_mut_ptr(),
            );
            let pos = pos.assume_init();
            (from_glib_full(path), from_glib(pos))
        }
    }

    fn item_at_pos(&self, x: i32, y: i32) -> Option<(TreePath, CellRenderer)> {
        unsafe {
            let mut path = ptr::null_mut();
            let mut cell = ptr::null_mut();
            let ret = from_glib(ffi::gtk_icon_view_get_item_at_pos(
                self.as_ref().to_glib_none().0,
                x,
                y,
                &mut path,
                &mut cell,
            ));
            if ret {
                Some((from_glib_full(path), from_glib_none(cell)))
            } else {
                None
            }
        }
    }

    fn item_column(&self, path: &TreePath) -> i32 {
        unsafe {
            ffi::gtk_icon_view_get_item_column(
                self.as_ref().to_glib_none().0,
                mut_override(path.to_glib_none().0),
            )
        }
    }

    fn item_orientation(&self) -> Orientation {
        unsafe {
            from_glib(ffi::gtk_icon_view_get_item_orientation(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

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

    fn item_row(&self, path: &TreePath) -> i32 {
        unsafe {
            ffi::gtk_icon_view_get_item_row(
                self.as_ref().to_glib_none().0,
                mut_override(path.to_glib_none().0),
            )
        }
    }

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

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

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

    fn model(&self) -> Option<TreeModel> {
        unsafe { from_glib_none(ffi::gtk_icon_view_get_model(self.as_ref().to_glib_none().0)) }
    }

    fn path_at_pos(&self, x: i32, y: i32) -> Option<TreePath> {
        unsafe {
            from_glib_full(ffi::gtk_icon_view_get_path_at_pos(
                self.as_ref().to_glib_none().0,
                x,
                y,
            ))
        }
    }

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

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

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

    fn selected_items(&self) -> Vec<TreePath> {
        unsafe {
            FromGlibPtrContainer::from_glib_full(ffi::gtk_icon_view_get_selected_items(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn selection_mode(&self) -> SelectionMode {
        unsafe {
            from_glib(ffi::gtk_icon_view_get_selection_mode(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

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

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

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

    fn tooltip_context(
        &self,
        x: &mut i32,
        y: &mut i32,
        keyboard_tip: bool,
    ) -> Option<(TreeModel, TreePath, TreeIter)> {
        unsafe {
            let mut model = ptr::null_mut();
            let mut path = ptr::null_mut();
            let mut iter = TreeIter::uninitialized();
            let ret = from_glib(ffi::gtk_icon_view_get_tooltip_context(
                self.as_ref().to_glib_none().0,
                x,
                y,
                keyboard_tip.into_glib(),
                &mut model,
                &mut path,
                iter.to_glib_none_mut().0,
            ));
            if ret {
                Some((from_glib_none(model), from_glib_full(path), iter))
            } else {
                None
            }
        }
    }

    fn visible_range(&self) -> Option<(TreePath, TreePath)> {
        unsafe {
            let mut start_path = ptr::null_mut();
            let mut end_path = ptr::null_mut();
            let ret = from_glib(ffi::gtk_icon_view_get_visible_range(
                self.as_ref().to_glib_none().0,
                &mut start_path,
                &mut end_path,
            ));
            if ret {
                Some((from_glib_full(start_path), from_glib_full(end_path)))
            } else {
                None
            }
        }
    }

    fn item_activated(&self, path: &TreePath) {
        unsafe {
            ffi::gtk_icon_view_item_activated(
                self.as_ref().to_glib_none().0,
                mut_override(path.to_glib_none().0),
            );
        }
    }

    fn path_is_selected(&self, path: &TreePath) -> bool {
        unsafe {
            from_glib(ffi::gtk_icon_view_path_is_selected(
                self.as_ref().to_glib_none().0,
                mut_override(path.to_glib_none().0),
            ))
        }
    }

    fn scroll_to_path(&self, path: &TreePath, use_align: bool, row_align: f32, col_align: f32) {
        unsafe {
            ffi::gtk_icon_view_scroll_to_path(
                self.as_ref().to_glib_none().0,
                mut_override(path.to_glib_none().0),
                use_align.into_glib(),
                row_align,
                col_align,
            );
        }
    }

    fn select_all(&self) {
        unsafe {
            ffi::gtk_icon_view_select_all(self.as_ref().to_glib_none().0);
        }
    }

    fn select_path(&self, path: &TreePath) {
        unsafe {
            ffi::gtk_icon_view_select_path(
                self.as_ref().to_glib_none().0,
                mut_override(path.to_glib_none().0),
            );
        }
    }

    fn selected_foreach<P: FnMut(&IconView, &TreePath)>(&self, func: P) {
        let func_data: P = func;
        unsafe extern "C" fn func_func<P: FnMut(&IconView, &TreePath)>(
            icon_view: *mut ffi::GtkIconView,
            path: *mut ffi::GtkTreePath,
            data: glib::ffi::gpointer,
        ) {
            let icon_view = from_glib_borrow(icon_view);
            let path = from_glib_borrow(path);
            let callback: *mut P = data as *const _ as usize as *mut P;
            (*callback)(&icon_view, &path);
        }
        let func = Some(func_func::<P> as _);
        let super_callback0: &P = &func_data;
        unsafe {
            ffi::gtk_icon_view_selected_foreach(
                self.as_ref().to_glib_none().0,
                func,
                super_callback0 as *const _ as usize as *mut _,
            );
        }
    }

    fn set_activate_on_single_click(&self, single: bool) {
        unsafe {
            ffi::gtk_icon_view_set_activate_on_single_click(
                self.as_ref().to_glib_none().0,
                single.into_glib(),
            );
        }
    }

    fn set_column_spacing(&self, column_spacing: i32) {
        unsafe {
            ffi::gtk_icon_view_set_column_spacing(self.as_ref().to_glib_none().0, column_spacing);
        }
    }

    fn set_columns(&self, columns: i32) {
        unsafe {
            ffi::gtk_icon_view_set_columns(self.as_ref().to_glib_none().0, columns);
        }
    }

    fn set_cursor<P: IsA<CellRenderer>>(
        &self,
        path: &TreePath,
        cell: Option<&P>,
        start_editing: bool,
    ) {
        unsafe {
            ffi::gtk_icon_view_set_cursor(
                self.as_ref().to_glib_none().0,
                mut_override(path.to_glib_none().0),
                cell.map(|p| p.as_ref()).to_glib_none().0,
                start_editing.into_glib(),
            );
        }
    }

    fn set_drag_dest_item(&self, path: Option<&TreePath>, pos: IconViewDropPosition) {
        unsafe {
            ffi::gtk_icon_view_set_drag_dest_item(
                self.as_ref().to_glib_none().0,
                mut_override(path.to_glib_none().0),
                pos.into_glib(),
            );
        }
    }

    fn set_item_orientation(&self, orientation: Orientation) {
        unsafe {
            ffi::gtk_icon_view_set_item_orientation(
                self.as_ref().to_glib_none().0,
                orientation.into_glib(),
            );
        }
    }

    fn set_item_padding(&self, item_padding: i32) {
        unsafe {
            ffi::gtk_icon_view_set_item_padding(self.as_ref().to_glib_none().0, item_padding);
        }
    }

    fn set_item_width(&self, item_width: i32) {
        unsafe {
            ffi::gtk_icon_view_set_item_width(self.as_ref().to_glib_none().0, item_width);
        }
    }

    fn set_margin(&self, margin: i32) {
        unsafe {
            ffi::gtk_icon_view_set_margin(self.as_ref().to_glib_none().0, margin);
        }
    }

    fn set_markup_column(&self, column: i32) {
        unsafe {
            ffi::gtk_icon_view_set_markup_column(self.as_ref().to_glib_none().0, column);
        }
    }

    fn set_model<P: IsA<TreeModel>>(&self, model: Option<&P>) {
        unsafe {
            ffi::gtk_icon_view_set_model(
                self.as_ref().to_glib_none().0,
                model.map(|p| p.as_ref()).to_glib_none().0,
            );
        }
    }

    fn set_pixbuf_column(&self, column: i32) {
        unsafe {
            ffi::gtk_icon_view_set_pixbuf_column(self.as_ref().to_glib_none().0, column);
        }
    }

    fn set_reorderable(&self, reorderable: bool) {
        unsafe {
            ffi::gtk_icon_view_set_reorderable(
                self.as_ref().to_glib_none().0,
                reorderable.into_glib(),
            );
        }
    }

    fn set_row_spacing(&self, row_spacing: i32) {
        unsafe {
            ffi::gtk_icon_view_set_row_spacing(self.as_ref().to_glib_none().0, row_spacing);
        }
    }

    fn set_selection_mode(&self, mode: SelectionMode) {
        unsafe {
            ffi::gtk_icon_view_set_selection_mode(self.as_ref().to_glib_none().0, mode.into_glib());
        }
    }

    fn set_spacing(&self, spacing: i32) {
        unsafe {
            ffi::gtk_icon_view_set_spacing(self.as_ref().to_glib_none().0, spacing);
        }
    }

    fn set_text_column(&self, column: i32) {
        unsafe {
            ffi::gtk_icon_view_set_text_column(self.as_ref().to_glib_none().0, column);
        }
    }

    fn set_tooltip_cell<P: IsA<CellRenderer>>(
        &self,
        tooltip: &Tooltip,
        path: &TreePath,
        cell: Option<&P>,
    ) {
        unsafe {
            ffi::gtk_icon_view_set_tooltip_cell(
                self.as_ref().to_glib_none().0,
                tooltip.to_glib_none().0,
                mut_override(path.to_glib_none().0),
                cell.map(|p| p.as_ref()).to_glib_none().0,
            );
        }
    }

    fn set_tooltip_column(&self, column: i32) {
        unsafe {
            ffi::gtk_icon_view_set_tooltip_column(self.as_ref().to_glib_none().0, column);
        }
    }

    fn set_tooltip_item(&self, tooltip: &Tooltip, path: &TreePath) {
        unsafe {
            ffi::gtk_icon_view_set_tooltip_item(
                self.as_ref().to_glib_none().0,
                tooltip.to_glib_none().0,
                mut_override(path.to_glib_none().0),
            );
        }
    }

    fn unselect_all(&self) {
        unsafe {
            ffi::gtk_icon_view_unselect_all(self.as_ref().to_glib_none().0);
        }
    }

    fn unselect_path(&self, path: &TreePath) {
        unsafe {
            ffi::gtk_icon_view_unselect_path(
                self.as_ref().to_glib_none().0,
                mut_override(path.to_glib_none().0),
            );
        }
    }

    fn unset_model_drag_dest(&self) {
        unsafe {
            ffi::gtk_icon_view_unset_model_drag_dest(self.as_ref().to_glib_none().0);
        }
    }

    fn unset_model_drag_source(&self) {
        unsafe {
            ffi::gtk_icon_view_unset_model_drag_source(self.as_ref().to_glib_none().0);
        }
    }

    fn cell_area(&self) -> Option<CellArea> {
        unsafe {
            let mut value = glib::Value::from_type(<CellArea as StaticType>::static_type());
            glib::gobject_ffi::g_object_get_property(
                self.to_glib_none().0 as *mut glib::gobject_ffi::GObject,
                b"cell-area\0".as_ptr() as *const _,
                value.to_glib_none_mut().0,
            );
            value
                .get()
                .expect("Return Value for property `cell-area` getter")
        }
    }

    fn connect_activate_cursor_item<F: Fn(&Self) -> bool + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn activate_cursor_item_trampoline<
            P: IsA<IconView>,
            F: Fn(&P) -> bool + 'static,
        >(
            this: *mut ffi::GtkIconView,
            f: glib::ffi::gpointer,
        ) -> glib::ffi::gboolean {
            let f: &F = &*(f as *const F);
            f(IconView::from_glib_borrow(this).unsafe_cast_ref()).into_glib()
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"activate-cursor-item\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    activate_cursor_item_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_activate_cursor_item(&self) -> bool {
        let res = unsafe {
            glib::Object::from_glib_borrow(self.as_ptr() as *mut glib::gobject_ffi::GObject)
                .emit_by_name("activate-cursor-item", &[])
                .unwrap()
        };
        res.unwrap()
            .get()
            .expect("Return Value for `emit_activate_cursor_item`")
    }

    fn connect_item_activated<F: Fn(&Self, &TreePath) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn item_activated_trampoline<
            P: IsA<IconView>,
            F: Fn(&P, &TreePath) + 'static,
        >(
            this: *mut ffi::GtkIconView,
            path: *mut ffi::GtkTreePath,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(
                IconView::from_glib_borrow(this).unsafe_cast_ref(),
                &from_glib_borrow(path),
            )
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"item-activated\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    item_activated_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn connect_move_cursor<F: Fn(&Self, MovementStep, i32) -> bool + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn move_cursor_trampoline<
            P: IsA<IconView>,
            F: Fn(&P, MovementStep, i32) -> bool + 'static,
        >(
            this: *mut ffi::GtkIconView,
            step: ffi::GtkMovementStep,
            count: libc::c_int,
            f: glib::ffi::gpointer,
        ) -> glib::ffi::gboolean {
            let f: &F = &*(f as *const F);
            f(
                IconView::from_glib_borrow(this).unsafe_cast_ref(),
                from_glib(step),
                count,
            )
            .into_glib()
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"move-cursor\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    move_cursor_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_move_cursor(&self, step: MovementStep, count: i32) -> bool {
        let res = unsafe {
            glib::Object::from_glib_borrow(self.as_ptr() as *mut glib::gobject_ffi::GObject)
                .emit_by_name("move-cursor", &[&step, &count])
                .unwrap()
        };
        res.unwrap()
            .get()
            .expect("Return Value for `emit_move_cursor`")
    }

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

    fn emit_select_all(&self) {
        let _ = unsafe {
            glib::Object::from_glib_borrow(self.as_ptr() as *mut glib::gobject_ffi::GObject)
                .emit_by_name("select-all", &[])
                .unwrap()
        };
    }

    fn connect_select_cursor_item<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn select_cursor_item_trampoline<
            P: IsA<IconView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkIconView,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(IconView::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"select-cursor-item\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    select_cursor_item_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_select_cursor_item(&self) {
        let _ = unsafe {
            glib::Object::from_glib_borrow(self.as_ptr() as *mut glib::gobject_ffi::GObject)
                .emit_by_name("select-cursor-item", &[])
                .unwrap()
        };
    }

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

    fn connect_toggle_cursor_item<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn toggle_cursor_item_trampoline<
            P: IsA<IconView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkIconView,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(IconView::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"toggle-cursor-item\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    toggle_cursor_item_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_toggle_cursor_item(&self) {
        let _ = unsafe {
            glib::Object::from_glib_borrow(self.as_ptr() as *mut glib::gobject_ffi::GObject)
                .emit_by_name("toggle-cursor-item", &[])
                .unwrap()
        };
    }

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

    fn emit_unselect_all(&self) {
        let _ = unsafe {
            glib::Object::from_glib_borrow(self.as_ptr() as *mut glib::gobject_ffi::GObject)
                .emit_by_name("unselect-all", &[])
                .unwrap()
        };
    }

    fn connect_activate_on_single_click_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn notify_activate_on_single_click_trampoline<
            P: IsA<IconView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkIconView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(IconView::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::activate-on-single-click\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_activate_on_single_click_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<IconView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkIconView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(IconView::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_columns_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_columns_trampoline<P: IsA<IconView>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkIconView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(IconView::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::columns\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_columns_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

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

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

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

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

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

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

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

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

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

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

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

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

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