gtk4/auto/

paned.rs

// 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

#[cfg(feature = "v4_10")]
#[cfg_attr(docsrs, doc(cfg(feature = "v4_10")))]
use crate::AccessibleRange;
use crate::{
    ffi, Accessible, AccessibleRole, Align, Buildable, ConstraintTarget, LayoutManager, Orientable,
    Orientation, Overflow, ScrollType, Widget,
};
use glib::{
    object::ObjectType as _,
    prelude::*,
    signal::{connect_raw, SignalHandlerId},
    translate::*,
};
use std::boxed::Box as Box_;

#[cfg(feature = "v4_10")]
#[cfg_attr(docsrs, doc(cfg(feature = "v4_10")))]
glib::wrapper! {
    /// Arranges its children in two panes, horizontally or vertically.
    ///
    /// <picture>
    ///   <source srcset="panes-dark.png" media="(prefers-color-scheme: dark)">
    ///   <img alt="An example GtkPaned" src="panes.png">
    /// </picture>
    ///
    /// The division between the two panes is adjustable by the user
    /// by dragging a handle.
    ///
    /// Child widgets are added to the panes of the widget with
    /// [`set_start_child()`][Self::set_start_child()] and [`set_end_child()`][Self::set_end_child()].
    /// The division between the two children is set by default from the size
    /// requests of the children, but it can be adjusted by the user.
    ///
    /// A paned widget draws a separator between the two child widgets and a
    /// small handle that the user can drag to adjust the division. It does not
    /// draw any relief around the children or around the separator. (The space
    /// in which the separator is called the gutter.) Often, it is useful to put
    /// each child inside a [`Frame`][crate::Frame] so that the gutter appears as a
    /// ridge. No separator is drawn if one of the children is missing.
    ///
    /// Each child has two options that can be set, "resize" and "shrink". If
    /// "resize" is true then, when the [`Paned`][crate::Paned] is resized, that child will
    /// expand or shrink along with the paned widget. If "shrink" is true, then
    /// that child can be made smaller than its requisition by the user.
    /// Setting "shrink" to false allows the application to set a minimum size.
    /// If "resize" is false for both children, then this is treated as if
    /// "resize" is true for both children.
    ///
    /// The application can set the position of the slider as if it were set
    /// by the user, by calling [`set_position()`][Self::set_position()].
    ///
    /// # Shortcuts and Gestures
    ///
    /// The following signals have default keybindings:
    ///
    /// - [`accept-position`][struct@crate::Paned#accept-position]
    /// - [`cancel-position`][struct@crate::Paned#cancel-position]
    /// - [`cycle-child-focus`][struct@crate::Paned#cycle-child-focus]
    /// - [`cycle-handle-focus`][struct@crate::Paned#cycle-handle-focus]
    /// - [`move-handle`][struct@crate::Paned#move-handle]
    /// - [`toggle-handle-focus`][struct@crate::Paned#toggle-handle-focus]
    ///
    /// # CSS nodes
    ///
    /// ```text
    /// paned
    /// ├── <child>
    /// ├── separator[.wide]
    /// ╰── <child>
    /// ```
    ///
    /// [`Paned`][crate::Paned] has a main CSS node with name paned, and a subnode for
    /// the separator with name separator. The subnode gets a .wide style
    /// class when the paned is supposed to be wide.
    ///
    /// In horizontal orientation, the nodes are arranged based on the text
    /// direction, so in left-to-right mode, :first-child will select the
    /// leftmost child, while it will select the rightmost child in
    /// RTL layouts.
    ///
    /// ## Creating a paned widget with minimum sizes.
    ///
    /// **⚠️ The following code is in c ⚠️**
    ///
    /// ```c
    /// GtkWidget *hpaned = gtk_paned_new (GTK_ORIENTATION_HORIZONTAL);
    /// GtkWidget *frame1 = gtk_frame_new (NULL);
    /// GtkWidget *frame2 = gtk_frame_new (NULL);
    ///
    /// gtk_widget_set_size_request (hpaned, 200, -1);
    ///
    /// gtk_paned_set_start_child (GTK_PANED (hpaned), frame1);
    /// gtk_paned_set_resize_start_child (GTK_PANED (hpaned), TRUE);
    /// gtk_paned_set_shrink_start_child (GTK_PANED (hpaned), FALSE);
    /// gtk_widget_set_size_request (frame1, 50, -1);
    ///
    /// gtk_paned_set_end_child (GTK_PANED (hpaned), frame2);
    /// gtk_paned_set_resize_end_child (GTK_PANED (hpaned), FALSE);
    /// gtk_paned_set_shrink_end_child (GTK_PANED (hpaned), FALSE);
    /// gtk_widget_set_size_request (frame2, 50, -1);
    /// ```
    ///
    /// ## Properties
    ///
    ///
    /// #### `end-child`
    ///  The second child.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `max-position`
    ///  The largest possible value for the [`position`][struct@crate::Paned#position]
    /// property.
    ///
    /// This property is derived from the size and shrinkability
    /// of the widget's children.
    ///
    /// Readable
    ///
    ///
    /// #### `min-position`
    ///  The smallest possible value for the [`position`][struct@crate::Paned#position]
    /// property.
    ///
    /// This property is derived from the size and shrinkability
    /// of the widget's children.
    ///
    /// Readable
    ///
    ///
    /// #### `position`
    ///  Position of the separator in pixels, from the left/top.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `position-set`
    ///  Whether the [`position`][struct@crate::Paned#position] property has been set.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `resize-end-child`
    ///  Determines whether the second child expands and shrinks
    /// along with the paned widget.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `resize-start-child`
    ///  Determines whether the first child expands and shrinks
    /// along with the paned widget.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `shrink-end-child`
    ///  Determines whether the second child can be made smaller
    /// than its requisition.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `shrink-start-child`
    ///  Determines whether the first child can be made smaller
    /// than its requisition.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `start-child`
    ///  The first child.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `wide-handle`
    ///  Whether the [`Paned`][crate::Paned] should provide a stronger visual separation.
    ///
    /// For example, this could be set when a paned contains two
    /// [`Notebook`][crate::Notebook]s, whose tab rows would otherwise merge visually.
    ///
    /// Readable | Writeable
    /// <details><summary><h4>Widget</h4></summary>
    ///
    ///
    /// #### `can-focus`
    ///  Whether the widget or any of its descendents can accept
    /// the input focus.
    ///
    /// This property is meant to be set by widget implementations,
    /// typically in their instance init function.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `can-target`
    ///  Whether the widget can receive pointer events.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `css-classes`
    ///  A list of css classes applied to this widget.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `css-name`
    ///  The name of this widget in the CSS tree.
    ///
    /// This property is meant to be set by widget implementations,
    /// typically in their instance init function.
    ///
    /// Readable | Writeable | Construct Only
    ///
    ///
    /// #### `cursor`
    ///  The cursor used by @widget.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `focus-on-click`
    ///  Whether the widget should grab focus when it is clicked with the mouse.
    ///
    /// This property is only relevant for widgets that can take focus.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `focusable`
    ///  Whether this widget itself will accept the input focus.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `halign`
    ///  How to distribute horizontal space if widget gets extra space.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `has-default`
    ///  Whether the widget is the default widget.
    ///
    /// Readable
    ///
    ///
    /// #### `has-focus`
    ///  Whether the widget has the input focus.
    ///
    /// Readable
    ///
    ///
    /// #### `has-tooltip`
    ///  Enables or disables the emission of the [`query-tooltip`][struct@crate::Widget#query-tooltip]
    /// signal on @widget.
    ///
    /// A true value indicates that @widget can have a tooltip, in this case
    /// the widget will be queried using [`query-tooltip`][struct@crate::Widget#query-tooltip] to
    /// determine whether it will provide a tooltip or not.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `height-request`
    ///  Overrides for height request of the widget.
    ///
    /// If this is -1, the natural request will be used.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `hexpand`
    ///  Whether to expand horizontally.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `hexpand-set`
    ///  Whether to use the `hexpand` property.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `layout-manager`
    ///  The [`LayoutManager`][crate::LayoutManager] instance to use to compute
    /// the preferred size of the widget, and allocate its children.
    ///
    /// This property is meant to be set by widget implementations,
    /// typically in their instance init function.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `limit-events`
    ///  Makes this widget act like a modal dialog, with respect to
    /// event delivery.
    ///
    /// Global event controllers will not handle events with targets
    /// inside the widget, unless they are set up to ignore propagation
    /// limits. See [`EventControllerExt::set_propagation_limit()`][crate::prelude::EventControllerExt::set_propagation_limit()].
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `margin-bottom`
    ///  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.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `margin-end`
    ///  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.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `margin-start`
    ///  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.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `margin-top`
    ///  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.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `name`
    ///  The name of the widget.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `opacity`
    ///  The requested opacity of the widget.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `overflow`
    ///  How content outside the widget's content area is treated.
    ///
    /// This property is meant to be set by widget implementations,
    /// typically in their instance init function.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `parent`
    ///  The parent widget of this widget.
    ///
    /// Readable
    ///
    ///
    /// #### `receives-default`
    ///  Whether the widget will receive the default action when it is focused.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `root`
    ///  The [`Root`][crate::Root] widget of the widget tree containing this widget.
    ///
    /// This will be `NULL` if the widget is not contained in a root widget.
    ///
    /// Readable
    ///
    ///
    /// #### `scale-factor`
    ///  The scale factor of the widget.
    ///
    /// Readable
    ///
    ///
    /// #### `sensitive`
    ///  Whether the widget responds to input.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `tooltip-markup`
    ///  Sets the text of tooltip to be the given string, which is marked up
    /// with Pango markup.
    ///
    /// Also see [`Tooltip::set_markup()`][crate::Tooltip::set_markup()].
    ///
    /// This is a convenience property which will take care of getting the
    /// tooltip shown if the given string is not `NULL`:
    /// [`has-tooltip`][struct@crate::Widget#has-tooltip] will automatically be set to true
    /// and there will be taken care of [`query-tooltip`][struct@crate::Widget#query-tooltip] in
    /// the default signal handler.
    ///
    /// Note that if both [`tooltip-text`][struct@crate::Widget#tooltip-text] and
    /// [`tooltip-markup`][struct@crate::Widget#tooltip-markup] are set, the last one wins.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `tooltip-text`
    ///  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 `NULL`:
    /// [`has-tooltip`][struct@crate::Widget#has-tooltip] will automatically be set to true
    /// and there will be taken care of [`query-tooltip`][struct@crate::Widget#query-tooltip] in
    /// the default signal handler.
    ///
    /// Note that if both [`tooltip-text`][struct@crate::Widget#tooltip-text] and
    /// [`tooltip-markup`][struct@crate::Widget#tooltip-markup] are set, the last one wins.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `valign`
    ///  How to distribute vertical space if widget gets extra space.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `vexpand`
    ///  Whether to expand vertically.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `vexpand-set`
    ///  Whether to use the `vexpand` property.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `visible`
    ///  Whether the widget is visible.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `width-request`
    ///  Overrides for width request of the widget.
    ///
    /// If this is -1, the natural request will be used.
    ///
    /// Readable | Writeable
    /// </details>
    /// <details><summary><h4>Accessible</h4></summary>
    ///
    ///
    /// #### `accessible-role`
    ///  The accessible role of the given [`Accessible`][crate::Accessible] implementation.
    ///
    /// The accessible role cannot be changed once set.
    ///
    /// Readable | Writeable
    /// </details>
    /// <details><summary><h4>Orientable</h4></summary>
    ///
    ///
    /// #### `orientation`
    ///  The orientation of the orientable.
    ///
    /// Readable | Writeable
    /// </details>
    ///
    /// ## Signals
    ///
    ///
    /// #### `accept-position`
    ///  Emitted to accept the current position of the handle when
    /// moving it using key bindings.
    ///
    /// This is a [keybinding signal](class.SignalAction.html).
    ///
    /// The default binding for this signal is <kbd>Return</kbd> or
    /// <kbd>Space</kbd>.
    ///
    /// Action
    ///
    ///
    /// #### `cancel-position`
    ///  Emitted to cancel moving the position of the handle using key
    /// bindings.
    ///
    /// The position of the handle will be reset to the value prior to
    /// moving it.
    ///
    /// This is a [keybinding signal](class.SignalAction.html).
    ///
    /// The default binding for this signal is <kbd>Escape</kbd>.
    ///
    /// Action
    ///
    ///
    /// #### `cycle-child-focus`
    ///  Emitted to cycle the focus between the children of the paned.
    ///
    /// This is a [keybinding signal](class.SignalAction.html).
    ///
    /// The default binding is <kbd>F6</kbd>.
    ///
    /// Action
    ///
    ///
    /// #### `cycle-handle-focus`
    ///  Emitted to cycle whether the paned should grab focus to allow
    /// the user to change position of the handle by using key bindings.
    ///
    /// This is a [keybinding signal](class.SignalAction.html).
    ///
    /// The default binding for this signal is <kbd>F8</kbd>.
    ///
    /// Action
    ///
    ///
    /// #### `move-handle`
    ///  Emitted to move the handle with key bindings.
    ///
    /// This is a [keybinding signal](class.SignalAction.html).
    ///
    /// The default bindings for this signal are
    /// <kbd>Ctrl</kbd>+<kbd>←</kbd>, <kbd>←</kbd>,
    /// <kbd>Ctrl</kbd>+<kbd>→</kbd>, <kbd>→</kbd>,
    /// <kbd>Ctrl</kbd>+<kbd>↑</kbd>, <kbd>↑</kbd>,
    /// <kbd>Ctrl</kbd>+<kbd>↓</kbd>, <kbd>↓</kbd>,
    /// <kbd>PgUp</kbd>, <kbd>PgDn</kbd>, <kbd>Home</kbd>, <kbd>End</kbd>.
    ///
    /// Action
    ///
    ///
    /// #### `toggle-handle-focus`
    ///  Emitted to accept the current position of the handle and then
    /// move focus to the next widget in the focus chain.
    ///
    /// This is a [keybinding signal](class.SignalAction.html).
    ///
    /// The default binding is <kbd>Tab</kbd>.
    ///
    /// Action
    /// <details><summary><h4>Widget</h4></summary>
    ///
    ///
    /// #### `destroy`
    ///  Signals that all holders of a reference to the widget should release
    /// the reference that they hold.
    ///
    /// May result in finalization of the widget if all references are released.
    ///
    /// This signal is not suitable for saving widget state.
    ///
    ///
    ///
    ///
    /// #### `direction-changed`
    ///  Emitted when the text direction of a widget changes.
    ///
    ///
    ///
    ///
    /// #### `hide`
    ///  Emitted when @widget is hidden.
    ///
    ///
    ///
    ///
    /// #### `keynav-failed`
    ///  Emitted if keyboard navigation fails.
    ///
    /// See [`WidgetExt::keynav_failed()`][crate::prelude::WidgetExt::keynav_failed()] for details.
    ///
    ///
    ///
    ///
    /// #### `map`
    ///  Emitted when @widget is going to be mapped.
    ///
    /// A widget is mapped when the widget is visible (which is controlled with
    /// [`visible`][struct@crate::Widget#visible]) and all its parents up to the toplevel widget
    /// are also visible.
    ///
    /// The `::map` signal can be used to determine whether a widget will be drawn,
    /// for instance it can resume an animation that was stopped during the
    /// emission of [`unmap`][struct@crate::Widget#unmap].
    ///
    ///
    ///
    ///
    /// #### `mnemonic-activate`
    ///  Emitted when a widget is activated via a mnemonic.
    ///
    /// The default handler for this signal activates @widget if @group_cycling
    /// is false, or just makes @widget grab focus if @group_cycling is true.
    ///
    ///
    ///
    ///
    /// #### `move-focus`
    ///  Emitted when the focus is moved.
    ///
    /// The `::move-focus` signal is a [keybinding signal](class.SignalAction.html).
    ///
    /// The default bindings for this signal are <kbd>Tab</kbd> to move forward,
    /// and <kbd>Shift</kbd>+<kbd>Tab</kbd> to move backward.
    ///
    /// Action
    ///
    ///
    /// #### `query-tooltip`
    ///  Emitted when the widget’s tooltip is about to be shown.
    ///
    /// This happens when the [`has-tooltip`][struct@crate::Widget#has-tooltip] property
    /// is true and the hover timeout has expired with the cursor hovering
    /// above @widget; or emitted when @widget got focus in keyboard mode.
    ///
    /// Using the given coordinates, the signal handler should determine
    /// whether a tooltip should be shown for @widget. If this is the case
    /// true should be returned, false otherwise. Note that if @keyboard_mode
    /// is true, the values of @x and @y are undefined and should not be used.
    ///
    /// The signal handler is free to manipulate @tooltip with the therefore
    /// destined function calls.
    ///
    ///
    ///
    ///
    /// #### `realize`
    ///  Emitted when @widget is associated with a [`gdk::Surface`][crate::gdk::Surface].
    ///
    /// This means that [`WidgetExt::realize()`][crate::prelude::WidgetExt::realize()] has been called
    /// or the widget has been mapped (that is, it is going to be drawn).
    ///
    ///
    ///
    ///
    /// #### `show`
    ///  Emitted when @widget is shown.
    ///
    ///
    ///
    ///
    /// #### `state-flags-changed`
    ///  Emitted when the widget state changes.
    ///
    /// See [`WidgetExt::state_flags()`][crate::prelude::WidgetExt::state_flags()].
    ///
    ///
    ///
    ///
    /// #### `unmap`
    ///  Emitted when @widget is going to be unmapped.
    ///
    /// A widget is unmapped when either it or any of its parents up to the
    /// toplevel widget have been set as hidden.
    ///
    /// As `::unmap` indicates that a widget will not be shown any longer,
    /// it can be used to, for example, stop an animation on the widget.
    ///
    ///
    ///
    ///
    /// #### `unrealize`
    ///  Emitted when the [`gdk::Surface`][crate::gdk::Surface] associated with @widget is destroyed.
    ///
    /// This means that [`WidgetExt::unrealize()`][crate::prelude::WidgetExt::unrealize()] has been called
    /// or the widget has been unmapped (that is, it is going to be hidden).
    ///
    ///
    /// </details>
    ///
    /// # Implements
    ///
    /// [`WidgetExt`][trait@crate::prelude::WidgetExt], [`trait@glib::ObjectExt`], [`AccessibleExt`][trait@crate::prelude::AccessibleExt], [`BuildableExt`][trait@crate::prelude::BuildableExt], [`ConstraintTargetExt`][trait@crate::prelude::ConstraintTargetExt], [`AccessibleRangeExt`][trait@crate::prelude::AccessibleRangeExt], [`OrientableExt`][trait@crate::prelude::OrientableExt], [`WidgetExtManual`][trait@crate::prelude::WidgetExtManual], [`AccessibleExtManual`][trait@crate::prelude::AccessibleExtManual]
    #[doc(alias = "GtkPaned")]
    pub struct Paned(Object<ffi::GtkPaned>) @extends Widget, @implements Accessible, Buildable, ConstraintTarget, AccessibleRange, Orientable;

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

#[cfg(not(any(feature = "v4_10")))]
glib::wrapper! {
    #[doc(alias = "GtkPaned")]
    pub struct Paned(Object<ffi::GtkPaned>) @extends Widget, @implements Accessible, Buildable, ConstraintTarget, Orientable;

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

impl Paned {
    /// Creates a new [`Paned`][crate::Paned] widget.
    /// ## `orientation`
    /// the paned’s orientation.
    ///
    /// # Returns
    ///
    /// the newly created paned widget
    #[doc(alias = "gtk_paned_new")]
    pub fn new(orientation: Orientation) -> Paned {
        assert_initialized_main_thread!();
        unsafe { Widget::from_glib_none(ffi::gtk_paned_new(orientation.into_glib())).unsafe_cast() }
    }

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

    /// Retrieves the end child of the given [`Paned`][crate::Paned].
    ///
    /// # Returns
    ///
    /// the end child widget
    #[doc(alias = "gtk_paned_get_end_child")]
    #[doc(alias = "get_end_child")]
    #[doc(alias = "end-child")]
    pub fn end_child(&self) -> Option<Widget> {
        unsafe { from_glib_none(ffi::gtk_paned_get_end_child(self.to_glib_none().0)) }
    }

    /// Obtains the position of the divider between the two panes.
    ///
    /// # Returns
    ///
    /// the position of the divider, in pixels
    #[doc(alias = "gtk_paned_get_position")]
    #[doc(alias = "get_position")]
    pub fn position(&self) -> i32 {
        unsafe { ffi::gtk_paned_get_position(self.to_glib_none().0) }
    }

    /// Returns whether the [`end-child`][struct@crate::Paned#end-child] can be resized.
    ///
    /// # Returns
    ///
    /// true if the end child is resizable
    #[doc(alias = "gtk_paned_get_resize_end_child")]
    #[doc(alias = "get_resize_end_child")]
    #[doc(alias = "resize-end-child")]
    pub fn resizes_end_child(&self) -> bool {
        unsafe { from_glib(ffi::gtk_paned_get_resize_end_child(self.to_glib_none().0)) }
    }

    /// Returns whether the [`start-child`][struct@crate::Paned#start-child] can be resized.
    ///
    /// # Returns
    ///
    /// true if the start child is resizable
    #[doc(alias = "gtk_paned_get_resize_start_child")]
    #[doc(alias = "get_resize_start_child")]
    #[doc(alias = "resize-start-child")]
    pub fn resizes_start_child(&self) -> bool {
        unsafe { from_glib(ffi::gtk_paned_get_resize_start_child(self.to_glib_none().0)) }
    }

    /// Returns whether the [`end-child`][struct@crate::Paned#end-child] can shrink.
    ///
    /// # Returns
    ///
    /// true if the end child is shrinkable
    #[doc(alias = "gtk_paned_get_shrink_end_child")]
    #[doc(alias = "get_shrink_end_child")]
    #[doc(alias = "shrink-end-child")]
    pub fn shrinks_end_child(&self) -> bool {
        unsafe { from_glib(ffi::gtk_paned_get_shrink_end_child(self.to_glib_none().0)) }
    }

    /// Returns whether the [`start-child`][struct@crate::Paned#start-child] can shrink.
    ///
    /// # Returns
    ///
    /// true if the start child is shrinkable
    #[doc(alias = "gtk_paned_get_shrink_start_child")]
    #[doc(alias = "get_shrink_start_child")]
    #[doc(alias = "shrink-start-child")]
    pub fn shrinks_start_child(&self) -> bool {
        unsafe { from_glib(ffi::gtk_paned_get_shrink_start_child(self.to_glib_none().0)) }
    }

    /// Retrieves the start child of the given [`Paned`][crate::Paned].
    ///
    /// # Returns
    ///
    /// the start child widget
    #[doc(alias = "gtk_paned_get_start_child")]
    #[doc(alias = "get_start_child")]
    #[doc(alias = "start-child")]
    pub fn start_child(&self) -> Option<Widget> {
        unsafe { from_glib_none(ffi::gtk_paned_get_start_child(self.to_glib_none().0)) }
    }

    /// Gets whether the separator should be wide.
    ///
    /// # Returns
    ///
    /// [`true`] if the paned should have a wide handle
    #[doc(alias = "gtk_paned_get_wide_handle")]
    #[doc(alias = "get_wide_handle")]
    #[doc(alias = "wide-handle")]
    pub fn is_wide_handle(&self) -> bool {
        unsafe { from_glib(ffi::gtk_paned_get_wide_handle(self.to_glib_none().0)) }
    }

    /// Sets the end child of @self to @child.
    ///
    /// If @child is `NULL`, the existing child will be removed.
    /// ## `child`
    /// the widget to add
    #[doc(alias = "gtk_paned_set_end_child")]
    #[doc(alias = "end-child")]
    pub fn set_end_child(&self, child: Option<&impl IsA<Widget>>) {
        unsafe {
            ffi::gtk_paned_set_end_child(
                self.to_glib_none().0,
                child.map(|p| p.as_ref()).to_glib_none().0,
            );
        }
    }

    /// Sets the position of the divider between the two panes.
    /// ## `position`
    /// pixel position of divider, a negative value means that the position
    ///   is unset
    #[doc(alias = "gtk_paned_set_position")]
    #[doc(alias = "position")]
    pub fn set_position(&self, position: i32) {
        unsafe {
            ffi::gtk_paned_set_position(self.to_glib_none().0, position);
        }
    }

    /// Sets whether the [`end-child`][struct@crate::Paned#end-child] can be resized.
    /// ## `resize`
    /// true to let the end child be resized
    #[doc(alias = "gtk_paned_set_resize_end_child")]
    #[doc(alias = "resize-end-child")]
    pub fn set_resize_end_child(&self, resize: bool) {
        unsafe {
            ffi::gtk_paned_set_resize_end_child(self.to_glib_none().0, resize.into_glib());
        }
    }

    /// Sets whether the [`start-child`][struct@crate::Paned#start-child] can be resized.
    /// ## `resize`
    /// true to let the start child be resized
    #[doc(alias = "gtk_paned_set_resize_start_child")]
    #[doc(alias = "resize-start-child")]
    pub fn set_resize_start_child(&self, resize: bool) {
        unsafe {
            ffi::gtk_paned_set_resize_start_child(self.to_glib_none().0, resize.into_glib());
        }
    }

    /// Sets whether the [`end-child`][struct@crate::Paned#end-child] can shrink.
    /// ## `resize`
    /// true to let the end child be shrunk
    #[doc(alias = "gtk_paned_set_shrink_end_child")]
    #[doc(alias = "shrink-end-child")]
    pub fn set_shrink_end_child(&self, resize: bool) {
        unsafe {
            ffi::gtk_paned_set_shrink_end_child(self.to_glib_none().0, resize.into_glib());
        }
    }

    /// Sets whether the [`start-child`][struct@crate::Paned#start-child] can shrink.
    /// ## `resize`
    /// true to let the start child be shrunk
    #[doc(alias = "gtk_paned_set_shrink_start_child")]
    #[doc(alias = "shrink-start-child")]
    pub fn set_shrink_start_child(&self, resize: bool) {
        unsafe {
            ffi::gtk_paned_set_shrink_start_child(self.to_glib_none().0, resize.into_glib());
        }
    }

    /// Sets the start child of @self to @child.
    ///
    /// If @child is `NULL`, the existing child will be removed.
    /// ## `child`
    /// the widget to add
    #[doc(alias = "gtk_paned_set_start_child")]
    #[doc(alias = "start-child")]
    pub fn set_start_child(&self, child: Option<&impl IsA<Widget>>) {
        unsafe {
            ffi::gtk_paned_set_start_child(
                self.to_glib_none().0,
                child.map(|p| p.as_ref()).to_glib_none().0,
            );
        }
    }

    /// Sets whether the separator should be wide.
    /// ## `wide`
    /// the new value for the [`wide-handle`][struct@crate::Paned#wide-handle] property
    #[doc(alias = "gtk_paned_set_wide_handle")]
    #[doc(alias = "wide-handle")]
    pub fn set_wide_handle(&self, wide: bool) {
        unsafe {
            ffi::gtk_paned_set_wide_handle(self.to_glib_none().0, wide.into_glib());
        }
    }

    /// The largest possible value for the [`position`][struct@crate::Paned#position]
    /// property.
    ///
    /// This property is derived from the size and shrinkability
    /// of the widget's children.
    #[doc(alias = "max-position")]
    pub fn max_position(&self) -> i32 {
        ObjectExt::property(self, "max-position")
    }

    /// The smallest possible value for the [`position`][struct@crate::Paned#position]
    /// property.
    ///
    /// This property is derived from the size and shrinkability
    /// of the widget's children.
    #[doc(alias = "min-position")]
    pub fn min_position(&self) -> i32 {
        ObjectExt::property(self, "min-position")
    }

    /// Whether the [`position`][struct@crate::Paned#position] property has been set.
    #[doc(alias = "position-set")]
    pub fn is_position_set(&self) -> bool {
        ObjectExt::property(self, "position-set")
    }

    /// Emitted to accept the current position of the handle when
    /// moving it using key bindings.
    ///
    /// This is a [keybinding signal](class.SignalAction.html).
    ///
    /// The default binding for this signal is <kbd>Return</kbd> or
    /// <kbd>Space</kbd>.
    ///
    /// # Returns
    ///
    /// whether the position was accepted
    #[doc(alias = "accept-position")]
    pub fn connect_accept_position<F: Fn(&Self) -> bool + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn accept_position_trampoline<F: Fn(&Paned) -> bool + 'static>(
            this: *mut ffi::GtkPaned,
            f: glib::ffi::gpointer,
        ) -> glib::ffi::gboolean {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this)).into_glib()
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"accept-position".as_ptr() as *const _,
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    accept_position_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    pub fn emit_accept_position(&self) -> bool {
        self.emit_by_name("accept-position", &[])
    }

    /// Emitted to cancel moving the position of the handle using key
    /// bindings.
    ///
    /// The position of the handle will be reset to the value prior to
    /// moving it.
    ///
    /// This is a [keybinding signal](class.SignalAction.html).
    ///
    /// The default binding for this signal is <kbd>Escape</kbd>.
    ///
    /// # Returns
    ///
    /// whether the position was canceled
    #[doc(alias = "cancel-position")]
    pub fn connect_cancel_position<F: Fn(&Self) -> bool + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn cancel_position_trampoline<F: Fn(&Paned) -> bool + 'static>(
            this: *mut ffi::GtkPaned,
            f: glib::ffi::gpointer,
        ) -> glib::ffi::gboolean {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this)).into_glib()
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"cancel-position".as_ptr() as *const _,
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    cancel_position_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    pub fn emit_cancel_position(&self) -> bool {
        self.emit_by_name("cancel-position", &[])
    }

    /// Emitted to cycle the focus between the children of the paned.
    ///
    /// This is a [keybinding signal](class.SignalAction.html).
    ///
    /// The default binding is <kbd>F6</kbd>.
    /// ## `reversed`
    /// whether cycling backward or forward
    ///
    /// # Returns
    ///
    /// whether the behavior was cycled
    #[doc(alias = "cycle-child-focus")]
    pub fn connect_cycle_child_focus<F: Fn(&Self, bool) -> bool + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn cycle_child_focus_trampoline<F: Fn(&Paned, bool) -> bool + 'static>(
            this: *mut ffi::GtkPaned,
            reversed: glib::ffi::gboolean,
            f: glib::ffi::gpointer,
        ) -> glib::ffi::gboolean {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this), from_glib(reversed)).into_glib()
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"cycle-child-focus".as_ptr() as *const _,
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    cycle_child_focus_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    pub fn emit_cycle_child_focus(&self, reversed: bool) -> bool {
        self.emit_by_name("cycle-child-focus", &[&reversed])
    }

    /// Emitted to cycle whether the paned should grab focus to allow
    /// the user to change position of the handle by using key bindings.
    ///
    /// This is a [keybinding signal](class.SignalAction.html).
    ///
    /// The default binding for this signal is <kbd>F8</kbd>.
    /// ## `reversed`
    /// whether cycling backward or forward
    ///
    /// # Returns
    ///
    /// whether the behavior was cycled
    #[doc(alias = "cycle-handle-focus")]
    pub fn connect_cycle_handle_focus<F: Fn(&Self, bool) -> bool + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn cycle_handle_focus_trampoline<
            F: Fn(&Paned, bool) -> bool + 'static,
        >(
            this: *mut ffi::GtkPaned,
            reversed: glib::ffi::gboolean,
            f: glib::ffi::gpointer,
        ) -> glib::ffi::gboolean {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this), from_glib(reversed)).into_glib()
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"cycle-handle-focus".as_ptr() as *const _,
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    cycle_handle_focus_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    pub fn emit_cycle_handle_focus(&self, reversed: bool) -> bool {
        self.emit_by_name("cycle-handle-focus", &[&reversed])
    }

    /// Emitted to move the handle with key bindings.
    ///
    /// This is a [keybinding signal](class.SignalAction.html).
    ///
    /// The default bindings for this signal are
    /// <kbd>Ctrl</kbd>+<kbd>←</kbd>, <kbd>←</kbd>,
    /// <kbd>Ctrl</kbd>+<kbd>→</kbd>, <kbd>→</kbd>,
    /// <kbd>Ctrl</kbd>+<kbd>↑</kbd>, <kbd>↑</kbd>,
    /// <kbd>Ctrl</kbd>+<kbd>↓</kbd>, <kbd>↓</kbd>,
    /// <kbd>PgUp</kbd>, <kbd>PgDn</kbd>, <kbd>Home</kbd>, <kbd>End</kbd>.
    /// ## `scroll_type`
    /// a [`ScrollType`][crate::ScrollType]
    ///
    /// # Returns
    ///
    /// whether the handle was moved
    #[doc(alias = "move-handle")]
    pub fn connect_move_handle<F: Fn(&Self, ScrollType) -> bool + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn move_handle_trampoline<F: Fn(&Paned, ScrollType) -> bool + 'static>(
            this: *mut ffi::GtkPaned,
            scroll_type: ffi::GtkScrollType,
            f: glib::ffi::gpointer,
        ) -> glib::ffi::gboolean {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this), from_glib(scroll_type)).into_glib()
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"move-handle".as_ptr() as *const _,
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    move_handle_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    pub fn emit_move_handle(&self, scroll_type: ScrollType) -> bool {
        self.emit_by_name("move-handle", &[&scroll_type])
    }

    /// Emitted to accept the current position of the handle and then
    /// move focus to the next widget in the focus chain.
    ///
    /// This is a [keybinding signal](class.SignalAction.html).
    ///
    /// The default binding is <kbd>Tab</kbd>.
    ///
    /// # Returns
    ///
    /// whether handle focus was toggled
    #[doc(alias = "toggle-handle-focus")]
    pub fn connect_toggle_handle_focus<F: Fn(&Self) -> bool + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn toggle_handle_focus_trampoline<F: Fn(&Paned) -> bool + 'static>(
            this: *mut ffi::GtkPaned,
            f: glib::ffi::gpointer,
        ) -> glib::ffi::gboolean {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this)).into_glib()
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"toggle-handle-focus".as_ptr() as *const _,
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    toggle_handle_focus_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    pub fn emit_toggle_handle_focus(&self) -> bool {
        self.emit_by_name("toggle-handle-focus", &[])
    }

    #[doc(alias = "end-child")]
    pub fn connect_end_child_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_end_child_trampoline<F: Fn(&Paned) + 'static>(
            this: *mut ffi::GtkPaned,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this))
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::end-child".as_ptr() as *const _,
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_end_child_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "max-position")]
    pub fn connect_max_position_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_max_position_trampoline<F: Fn(&Paned) + 'static>(
            this: *mut ffi::GtkPaned,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this))
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::max-position".as_ptr() as *const _,
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_max_position_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "min-position")]
    pub fn connect_min_position_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_min_position_trampoline<F: Fn(&Paned) + 'static>(
            this: *mut ffi::GtkPaned,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this))
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::min-position".as_ptr() as *const _,
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_min_position_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "position")]
    pub fn connect_position_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_position_trampoline<F: Fn(&Paned) + 'static>(
            this: *mut ffi::GtkPaned,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this))
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::position".as_ptr() as *const _,
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_position_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "position-set")]
    pub fn connect_position_set_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_position_set_trampoline<F: Fn(&Paned) + 'static>(
            this: *mut ffi::GtkPaned,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this))
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::position-set".as_ptr() as *const _,
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_position_set_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "resize-end-child")]
    pub fn connect_resize_end_child_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_resize_end_child_trampoline<F: Fn(&Paned) + 'static>(
            this: *mut ffi::GtkPaned,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this))
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::resize-end-child".as_ptr() as *const _,
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_resize_end_child_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "resize-start-child")]
    pub fn connect_resize_start_child_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn notify_resize_start_child_trampoline<F: Fn(&Paned) + 'static>(
            this: *mut ffi::GtkPaned,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this))
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::resize-start-child".as_ptr() as *const _,
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_resize_start_child_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "shrink-end-child")]
    pub fn connect_shrink_end_child_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_shrink_end_child_trampoline<F: Fn(&Paned) + 'static>(
            this: *mut ffi::GtkPaned,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this))
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::shrink-end-child".as_ptr() as *const _,
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_shrink_end_child_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "shrink-start-child")]
    pub fn connect_shrink_start_child_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn notify_shrink_start_child_trampoline<F: Fn(&Paned) + 'static>(
            this: *mut ffi::GtkPaned,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this))
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::shrink-start-child".as_ptr() as *const _,
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_shrink_start_child_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "start-child")]
    pub fn connect_start_child_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_start_child_trampoline<F: Fn(&Paned) + 'static>(
            this: *mut ffi::GtkPaned,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this))
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::start-child".as_ptr() as *const _,
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_start_child_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "wide-handle")]
    pub fn connect_wide_handle_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_wide_handle_trampoline<F: Fn(&Paned) + 'static>(
            this: *mut ffi::GtkPaned,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this))
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::wide-handle".as_ptr() as *const _,
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_wide_handle_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }
}

impl Default for Paned {
    fn default() -> Self {
        glib::object::Object::new::<Self>()
    }
}

// rustdoc-stripper-ignore-next
/// A [builder-pattern] type to construct [`Paned`] objects.
///
/// [builder-pattern]: https://doc.rust-lang.org/1.0.0/style/ownership/builders.html
#[must_use = "The builder must be built to be used"]
pub struct PanedBuilder {
    builder: glib::object::ObjectBuilder<'static, Paned>,
}

impl PanedBuilder {
    fn new() -> Self {
        Self {
            builder: glib::object::Object::builder(),
        }
    }

    /// The second child.
    pub fn end_child(self, end_child: &impl IsA<Widget>) -> Self {
        Self {
            builder: self
                .builder
                .property("end-child", end_child.clone().upcast()),
        }
    }

    /// Position of the separator in pixels, from the left/top.
    pub fn position(self, position: i32) -> Self {
        Self {
            builder: self.builder.property("position", position),
        }
    }

    /// Whether the [`position`][struct@crate::Paned#position] property has been set.
    pub fn position_set(self, position_set: bool) -> Self {
        Self {
            builder: self.builder.property("position-set", position_set),
        }
    }

    /// Determines whether the second child expands and shrinks
    /// along with the paned widget.
    pub fn resize_end_child(self, resize_end_child: bool) -> Self {
        Self {
            builder: self.builder.property("resize-end-child", resize_end_child),
        }
    }

    /// Determines whether the first child expands and shrinks
    /// along with the paned widget.
    pub fn resize_start_child(self, resize_start_child: bool) -> Self {
        Self {
            builder: self
                .builder
                .property("resize-start-child", resize_start_child),
        }
    }

    /// Determines whether the second child can be made smaller
    /// than its requisition.
    pub fn shrink_end_child(self, shrink_end_child: bool) -> Self {
        Self {
            builder: self.builder.property("shrink-end-child", shrink_end_child),
        }
    }

    /// Determines whether the first child can be made smaller
    /// than its requisition.
    pub fn shrink_start_child(self, shrink_start_child: bool) -> Self {
        Self {
            builder: self
                .builder
                .property("shrink-start-child", shrink_start_child),
        }
    }

    /// The first child.
    pub fn start_child(self, start_child: &impl IsA<Widget>) -> Self {
        Self {
            builder: self
                .builder
                .property("start-child", start_child.clone().upcast()),
        }
    }

    /// Whether the [`Paned`][crate::Paned] should provide a stronger visual separation.
    ///
    /// For example, this could be set when a paned contains two
    /// [`Notebook`][crate::Notebook]s, whose tab rows would otherwise merge visually.
    pub fn wide_handle(self, wide_handle: bool) -> Self {
        Self {
            builder: self.builder.property("wide-handle", wide_handle),
        }
    }

    /// Whether the widget or any of its descendents can accept
    /// the input focus.
    ///
    /// This property is meant to be set by widget implementations,
    /// typically in their instance init function.
    pub fn can_focus(self, can_focus: bool) -> Self {
        Self {
            builder: self.builder.property("can-focus", can_focus),
        }
    }

    /// Whether the widget can receive pointer events.
    pub fn can_target(self, can_target: bool) -> Self {
        Self {
            builder: self.builder.property("can-target", can_target),
        }
    }

    /// A list of css classes applied to this widget.
    pub fn css_classes(self, css_classes: impl Into<glib::StrV>) -> Self {
        Self {
            builder: self.builder.property("css-classes", css_classes.into()),
        }
    }

    /// The name of this widget in the CSS tree.
    ///
    /// This property is meant to be set by widget implementations,
    /// typically in their instance init function.
    pub fn css_name(self, css_name: impl Into<glib::GString>) -> Self {
        Self {
            builder: self.builder.property("css-name", css_name.into()),
        }
    }

    /// The cursor used by @widget.
    pub fn cursor(self, cursor: &gdk::Cursor) -> Self {
        Self {
            builder: self.builder.property("cursor", cursor.clone()),
        }
    }

    /// Whether the widget should grab focus when it is clicked with the mouse.
    ///
    /// This property is only relevant for widgets that can take focus.
    pub fn focus_on_click(self, focus_on_click: bool) -> Self {
        Self {
            builder: self.builder.property("focus-on-click", focus_on_click),
        }
    }

    /// Whether this widget itself will accept the input focus.
    pub fn focusable(self, focusable: bool) -> Self {
        Self {
            builder: self.builder.property("focusable", focusable),
        }
    }

    /// How to distribute horizontal space if widget gets extra space.
    pub fn halign(self, halign: Align) -> Self {
        Self {
            builder: self.builder.property("halign", halign),
        }
    }

    /// Enables or disables the emission of the [`query-tooltip`][struct@crate::Widget#query-tooltip]
    /// signal on @widget.
    ///
    /// A true value indicates that @widget can have a tooltip, in this case
    /// the widget will be queried using [`query-tooltip`][struct@crate::Widget#query-tooltip] to
    /// determine whether it will provide a tooltip or not.
    pub fn has_tooltip(self, has_tooltip: bool) -> Self {
        Self {
            builder: self.builder.property("has-tooltip", has_tooltip),
        }
    }

    /// Overrides for height request of the widget.
    ///
    /// If this is -1, the natural request will be used.
    pub fn height_request(self, height_request: i32) -> Self {
        Self {
            builder: self.builder.property("height-request", height_request),
        }
    }

    /// Whether to expand horizontally.
    pub fn hexpand(self, hexpand: bool) -> Self {
        Self {
            builder: self.builder.property("hexpand", hexpand),
        }
    }

    /// Whether to use the `hexpand` property.
    pub fn hexpand_set(self, hexpand_set: bool) -> Self {
        Self {
            builder: self.builder.property("hexpand-set", hexpand_set),
        }
    }

    /// The [`LayoutManager`][crate::LayoutManager] instance to use to compute
    /// the preferred size of the widget, and allocate its children.
    ///
    /// This property is meant to be set by widget implementations,
    /// typically in their instance init function.
    pub fn layout_manager(self, layout_manager: &impl IsA<LayoutManager>) -> Self {
        Self {
            builder: self
                .builder
                .property("layout-manager", layout_manager.clone().upcast()),
        }
    }

    /// Makes this widget act like a modal dialog, with respect to
    /// event delivery.
    ///
    /// Global event controllers will not handle events with targets
    /// inside the widget, unless they are set up to ignore propagation
    /// limits. See [`EventControllerExt::set_propagation_limit()`][crate::prelude::EventControllerExt::set_propagation_limit()].
    #[cfg(feature = "v4_18")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_18")))]
    pub fn limit_events(self, limit_events: bool) -> Self {
        Self {
            builder: self.builder.property("limit-events", limit_events),
        }
    }

    /// 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(self, margin_bottom: i32) -> Self {
        Self {
            builder: self.builder.property("margin-bottom", margin_bottom),
        }
    }

    /// 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(self, margin_end: i32) -> Self {
        Self {
            builder: self.builder.property("margin-end", margin_end),
        }
    }

    /// 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(self, margin_start: i32) -> Self {
        Self {
            builder: self.builder.property("margin-start", margin_start),
        }
    }

    /// 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(self, margin_top: i32) -> Self {
        Self {
            builder: self.builder.property("margin-top", margin_top),
        }
    }

    /// The name of the widget.
    pub fn name(self, name: impl Into<glib::GString>) -> Self {
        Self {
            builder: self.builder.property("name", name.into()),
        }
    }

    /// The requested opacity of the widget.
    pub fn opacity(self, opacity: f64) -> Self {
        Self {
            builder: self.builder.property("opacity", opacity),
        }
    }

    /// How content outside the widget's content area is treated.
    ///
    /// This property is meant to be set by widget implementations,
    /// typically in their instance init function.
    pub fn overflow(self, overflow: Overflow) -> Self {
        Self {
            builder: self.builder.property("overflow", overflow),
        }
    }

    /// Whether the widget will receive the default action when it is focused.
    pub fn receives_default(self, receives_default: bool) -> Self {
        Self {
            builder: self.builder.property("receives-default", receives_default),
        }
    }

    /// Whether the widget responds to input.
    pub fn sensitive(self, sensitive: bool) -> Self {
        Self {
            builder: self.builder.property("sensitive", sensitive),
        }
    }

    /// Sets the text of tooltip to be the given string, which is marked up
    /// with Pango markup.
    ///
    /// Also see [`Tooltip::set_markup()`][crate::Tooltip::set_markup()].
    ///
    /// This is a convenience property which will take care of getting the
    /// tooltip shown if the given string is not `NULL`:
    /// [`has-tooltip`][struct@crate::Widget#has-tooltip] will automatically be set to true
    /// and there will be taken care of [`query-tooltip`][struct@crate::Widget#query-tooltip] in
    /// the default signal handler.
    ///
    /// Note that if both [`tooltip-text`][struct@crate::Widget#tooltip-text] and
    /// [`tooltip-markup`][struct@crate::Widget#tooltip-markup] are set, the last one wins.
    pub fn tooltip_markup(self, tooltip_markup: impl Into<glib::GString>) -> Self {
        Self {
            builder: self
                .builder
                .property("tooltip-markup", tooltip_markup.into()),
        }
    }

    /// 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 `NULL`:
    /// [`has-tooltip`][struct@crate::Widget#has-tooltip] will automatically be set to true
    /// and there will be taken care of [`query-tooltip`][struct@crate::Widget#query-tooltip] in
    /// the default signal handler.
    ///
    /// Note that if both [`tooltip-text`][struct@crate::Widget#tooltip-text] and
    /// [`tooltip-markup`][struct@crate::Widget#tooltip-markup] are set, the last one wins.
    pub fn tooltip_text(self, tooltip_text: impl Into<glib::GString>) -> Self {
        Self {
            builder: self.builder.property("tooltip-text", tooltip_text.into()),
        }
    }

    /// How to distribute vertical space if widget gets extra space.
    pub fn valign(self, valign: Align) -> Self {
        Self {
            builder: self.builder.property("valign", valign),
        }
    }

    /// Whether to expand vertically.
    pub fn vexpand(self, vexpand: bool) -> Self {
        Self {
            builder: self.builder.property("vexpand", vexpand),
        }
    }

    /// Whether to use the `vexpand` property.
    pub fn vexpand_set(self, vexpand_set: bool) -> Self {
        Self {
            builder: self.builder.property("vexpand-set", vexpand_set),
        }
    }

    /// Whether the widget is visible.
    pub fn visible(self, visible: bool) -> Self {
        Self {
            builder: self.builder.property("visible", visible),
        }
    }

    /// Overrides for width request of the widget.
    ///
    /// If this is -1, the natural request will be used.
    pub fn width_request(self, width_request: i32) -> Self {
        Self {
            builder: self.builder.property("width-request", width_request),
        }
    }

    /// The accessible role of the given [`Accessible`][crate::Accessible] implementation.
    ///
    /// The accessible role cannot be changed once set.
    pub fn accessible_role(self, accessible_role: AccessibleRole) -> Self {
        Self {
            builder: self.builder.property("accessible-role", accessible_role),
        }
    }

    /// The orientation of the orientable.
    pub fn orientation(self, orientation: Orientation) -> Self {
        Self {
            builder: self.builder.property("orientation", orientation),
        }
    }

    // rustdoc-stripper-ignore-next
    /// Build the [`Paned`].
    #[must_use = "Building the object from the builder is usually expensive and is not expected to have side effects"]
    pub fn build(self) -> Paned {
        assert_initialized_main_thread!();
        self.builder.build()
    }
}