// This file was generated by gir (https://github.com/gtk-rs/gir)
// from
// from gir-files (https://github.com/gtk-rs/gir-files.git)
// DO NOT EDIT

use crate::{NavigationDirection, SwipeTracker};
use glib::{
    prelude::*,
    signal::{connect_raw, SignalHandlerId},
    translate::*,
};
use std::{boxed::Box as Box_, fmt, mem, mem::transmute};

glib::wrapper! {
    /// An interface for swipeable widgets.
    ///
    /// The [`Swipeable`][crate::Swipeable] interface is implemented by all swipeable widgets. They
    /// can be synced using [`SwipeGroup`][crate::SwipeGroup].
    ///
    /// See [`SwipeTracker`][crate::SwipeTracker] for details about implementing it.
    ///
    /// ## Signals
    ///
    ///
    /// #### `child-switched`
    ///  Emitted when the widget's visible child is changed.
    ///
    /// @duration can be 0 if the child is switched without animation.
    ///
    /// This is used by [`SwipeGroup`][crate::SwipeGroup], applications should not connect to it.
    ///
    ///
    /// <details><summary><h4>Widget</h4></summary>
    ///
    ///
    /// #### `accel-closures-changed`
    ///
    ///
    ///
    /// #### `button-press-event`
    ///  The ::button-press-event signal will be emitted when a button
    /// (typically from a mouse) is pressed.
    ///
    /// To receive this signal, the #GdkWindow associated to the
    /// widget needs to enable the #GDK_BUTTON_PRESS_MASK mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `button-release-event`
    ///  The ::button-release-event signal will be emitted when a button
    /// (typically from a mouse) is released.
    ///
    /// To receive this signal, the #GdkWindow associated to the
    /// widget needs to enable the #GDK_BUTTON_RELEASE_MASK mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `can-activate-accel`
    ///  Determines whether an accelerator that activates the signal
    /// identified by @signal_id can currently be activated.
    /// This signal is present to allow applications and derived
    /// widgets to override the default #GtkWidget handling
    /// for determining whether an accelerator can be activated.
    ///
    ///
    ///
    ///
    /// #### `child-notify`
    ///  The ::child-notify signal is emitted for each
    /// [child property][child-properties]  that has
    /// changed on an object. The signal's detail holds the property name.
    ///
    /// Detailed
    ///
    ///
    /// #### `composited-changed`
    ///  The ::composited-changed signal is emitted when the composited
    /// status of @widgets screen changes.
    /// See gdk_screen_is_composited().
    ///
    /// Action
    ///
    ///
    /// #### `configure-event`
    ///  The ::configure-event signal will be emitted when the size, position or
    /// stacking of the @widget's window has changed.
    ///
    /// To receive this signal, the #GdkWindow associated to the widget needs
    /// to enable the #GDK_STRUCTURE_MASK mask. GDK will enable this mask
    /// automatically for all new windows.
    ///
    ///
    ///
    ///
    /// #### `damage-event`
    ///  Emitted when a redirected window belonging to @widget gets drawn into.
    /// The region/area members of the event shows what area of the redirected
    /// drawable was drawn into.
    ///
    ///
    ///
    ///
    /// #### `delete-event`
    ///  The ::delete-event signal is emitted if a user requests that
    /// a toplevel window is closed. The default handler for this signal
    /// destroys the window. Connecting gtk_widget_hide_on_delete() to
    /// this signal will cause the window to be hidden instead, so that
    /// it can later be shown again without reconstructing it.
    ///
    ///
    ///
    ///
    /// #### `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.
    ///
    ///
    ///
    ///
    /// #### `destroy-event`
    ///  The ::destroy-event signal is emitted when a #GdkWindow is destroyed.
    /// You rarely get this signal, because most widgets disconnect themselves
    /// from their window before they destroy it, so no widget owns the
    /// window at destroy time.
    ///
    /// To receive this signal, the #GdkWindow associated to the widget needs
    /// to enable the #GDK_STRUCTURE_MASK mask. GDK will enable this mask
    /// automatically for all new windows.
    ///
    ///
    ///
    ///
    /// #### `direction-changed`
    ///  The ::direction-changed signal is emitted when the text direction
    /// of a widget changes.
    ///
    ///
    ///
    ///
    /// #### `drag-begin`
    ///  The ::drag-begin signal is emitted on the drag source when a drag is
    /// started. A typical reason to connect to this signal is to set up a
    /// custom drag icon with e.g. gtk_drag_source_set_icon_pixbuf().
    ///
    /// Note that some widgets set up a drag icon in the default handler of
    /// this signal, so you may have to use g_signal_connect_after() to
    /// override what the default handler did.
    ///
    ///
    ///
    ///
    /// #### `drag-data-delete`
    ///  The ::drag-data-delete signal is emitted on the drag source when a drag
    /// with the action `GDK_ACTION_MOVE` is successfully completed. The signal
    /// handler is responsible for deleting the data that has been dropped. What
    /// "delete" means depends on the context of the drag operation.
    ///
    ///
    ///
    ///
    /// #### `drag-data-get`
    ///  The ::drag-data-get signal is emitted on the drag source when the drop
    /// site requests the data which is dragged. It is the responsibility of
    /// the signal handler to fill @data with the data in the format which
    /// is indicated by @info. See gtk_selection_data_set() and
    /// gtk_selection_data_set_text().
    ///
    ///
    ///
    ///
    /// #### `drag-data-received`
    ///  The ::drag-data-received signal is emitted on the drop site when the
    /// dragged data has been received. If the data was received in order to
    /// determine whether the drop will be accepted, the handler is expected
    /// to call gdk_drag_status() and not finish the drag.
    /// If the data was received in response to a #GtkWidget::drag-drop signal
    /// (and this is the last target to be received), the handler for this
    /// signal is expected to process the received data and then call
    /// gtk_drag_finish(), setting the @success parameter depending on
    /// whether the data was processed successfully.
    ///
    /// Applications must create some means to determine why the signal was emitted
    /// and therefore whether to call gdk_drag_status() or gtk_drag_finish().
    ///
    /// The handler may inspect the selected action with
    /// gdk_drag_context_get_selected_action() before calling
    /// gtk_drag_finish(), e.g. to implement `GDK_ACTION_ASK` as
    /// shown in the following example:
    ///
    ///
    /// **⚠️ The following code is in C ⚠️**
    ///
    /// ```C
    /// void
    /// drag_data_received (GtkWidget          *widget,
    ///                     GdkDragContext     *context,
    ///                     gint                x,
    ///                     gint                y,
    ///                     GtkSelectionData   *data,
    ///                     guint               info,
    ///                     guint               time)
    /// {
    ///   if ((data->length >= 0) && (data->format == 8))
    ///     {
    ///       GdkDragAction action;
    ///
    ///       // handle data here
    ///
    ///       action = gdk_drag_context_get_selected_action (context);
    ///       if (action == GDK_ACTION_ASK)
    ///         {
    ///           GtkWidget *dialog;
    ///           gint response;
    ///
    ///           dialog = gtk_message_dialog_new (NULL,
    ///                                            GTK_DIALOG_MODAL |
    ///                                            GTK_DIALOG_DESTROY_WITH_PARENT,
    ///                                            GTK_MESSAGE_INFO,
    ///                                            GTK_BUTTONS_YES_NO,
    ///                                            "Move the data ?\n");
    ///           response = gtk_dialog_run (GTK_DIALOG (dialog));
    ///           gtk_widget_destroy (dialog);
    ///
    ///           if (response == GTK_RESPONSE_YES)
    ///             action = GDK_ACTION_MOVE;
    ///           else
    ///             action = GDK_ACTION_COPY;
    ///          }
    ///
    ///       gtk_drag_finish (context, TRUE, action == GDK_ACTION_MOVE, time);
    ///     }
    ///   else
    ///     gtk_drag_finish (context, FALSE, FALSE, time);
    ///  }
    /// ```
    ///
    ///
    ///
    ///
    /// #### `drag-drop`
    ///  The ::drag-drop signal is emitted on the drop site when the user drops
    /// the data onto the widget. The signal handler must determine whether
    /// the cursor position is in a drop zone or not. If it is not in a drop
    /// zone, it returns [`false`] and no further processing is necessary.
    /// Otherwise, the handler returns [`true`]. In this case, the handler must
    /// ensure that gtk_drag_finish() is called to let the source know that
    /// the drop is done. The call to gtk_drag_finish() can be done either
    /// directly or in a #GtkWidget::drag-data-received handler which gets
    /// triggered by calling gtk_drag_get_data() to receive the data for one
    /// or more of the supported targets.
    ///
    ///
    ///
    ///
    /// #### `drag-end`
    ///  The ::drag-end signal is emitted on the drag source when a drag is
    /// finished.  A typical reason to connect to this signal is to undo
    /// things done in #GtkWidget::drag-begin.
    ///
    ///
    ///
    ///
    /// #### `drag-failed`
    ///  The ::drag-failed signal is emitted on the drag source when a drag has
    /// failed. The signal handler may hook custom code to handle a failed DnD
    /// operation based on the type of error, it returns [`true`] is the failure has
    /// been already handled (not showing the default "drag operation failed"
    /// animation), otherwise it returns [`false`].
    ///
    ///
    ///
    ///
    /// #### `drag-leave`
    ///  The ::drag-leave signal is emitted on the drop site when the cursor
    /// leaves the widget. A typical reason to connect to this signal is to
    /// undo things done in #GtkWidget::drag-motion, e.g. undo highlighting
    /// with gtk_drag_unhighlight().
    ///
    ///
    /// Likewise, the #GtkWidget::drag-leave signal is also emitted before the
    /// ::drag-drop signal, for instance to allow cleaning up of a preview item
    /// created in the #GtkWidget::drag-motion signal handler.
    ///
    ///
    ///
    ///
    /// #### `drag-motion`
    ///  The ::drag-motion signal is emitted on the drop site when the user
    /// moves the cursor over the widget during a drag. The signal handler
    /// must determine whether the cursor position is in a drop zone or not.
    /// If it is not in a drop zone, it returns [`false`] and no further processing
    /// is necessary. Otherwise, the handler returns [`true`]. In this case, the
    /// handler is responsible for providing the necessary information for
    /// displaying feedback to the user, by calling gdk_drag_status().
    ///
    /// If the decision whether the drop will be accepted or rejected can't be
    /// made based solely on the cursor position and the type of the data, the
    /// handler may inspect the dragged data by calling gtk_drag_get_data() and
    /// defer the gdk_drag_status() call to the #GtkWidget::drag-data-received
    /// handler. Note that you must pass #GTK_DEST_DEFAULT_DROP,
    /// #GTK_DEST_DEFAULT_MOTION or #GTK_DEST_DEFAULT_ALL to gtk_drag_dest_set()
    /// when using the drag-motion signal that way.
    ///
    /// Also note that there is no drag-enter signal. The drag receiver has to
    /// keep track of whether he has received any drag-motion signals since the
    /// last #GtkWidget::drag-leave and if not, treat the drag-motion signal as
    /// an "enter" signal. Upon an "enter", the handler will typically highlight
    /// the drop site with gtk_drag_highlight().
    ///
    ///
    /// **⚠️ The following code is in C ⚠️**
    ///
    /// ```C
    /// static void
    /// drag_motion (GtkWidget      *widget,
    ///              GdkDragContext *context,
    ///              gint            x,
    ///              gint            y,
    ///              guint           time)
    /// {
    ///   GdkAtom target;
    ///
    ///   PrivateData *private_data = GET_PRIVATE_DATA (widget);
    ///
    ///   if (!private_data->drag_highlight)
    ///    {
    ///      private_data->drag_highlight = 1;
    ///      gtk_drag_highlight (widget);
    ///    }
    ///
    ///   target = gtk_drag_dest_find_target (widget, context, NULL);
    ///   if (target == GDK_NONE)
    ///     gdk_drag_status (context, 0, time);
    ///   else
    ///    {
    ///      private_data->pending_status
    ///         = gdk_drag_context_get_suggested_action (context);
    ///      gtk_drag_get_data (widget, context, target, time);
    ///    }
    ///
    ///   return TRUE;
    /// }
    ///
    /// static void
    /// drag_data_received (GtkWidget        *widget,
    ///                     GdkDragContext   *context,
    ///                     gint              x,
    ///                     gint              y,
    ///                     GtkSelectionData *selection_data,
    ///                     guint             info,
    ///                     guint             time)
    /// {
    ///   PrivateData *private_data = GET_PRIVATE_DATA (widget);
    ///
    ///   if (private_data->suggested_action)
    ///    {
    ///      private_data->suggested_action = 0;
    ///
    ///      // We are getting this data due to a request in drag_motion,
    ///      // rather than due to a request in drag_drop, so we are just
    ///      // supposed to call gdk_drag_status(), not actually paste in
    ///      // the data.
    ///
    ///      str = gtk_selection_data_get_text (selection_data);
    ///      if (!data_is_acceptable (str))
    ///        gdk_drag_status (context, 0, time);
    ///      else
    ///        gdk_drag_status (context,
    ///                         private_data->suggested_action,
    ///                         time);
    ///    }
    ///   else
    ///    {
    ///      // accept the drop
    ///    }
    /// }
    /// ```
    ///
    ///
    ///
    ///
    /// #### `draw`
    ///  This signal is emitted when a widget is supposed to render itself.
    /// The @widget's top left corner must be painted at the origin of
    /// the passed in context and be sized to the values returned by
    /// gtk_widget_get_allocated_width() and
    /// gtk_widget_get_allocated_height().
    ///
    /// Signal handlers connected to this signal can modify the cairo
    /// context passed as @cr in any way they like and don't need to
    /// restore it. The signal emission takes care of calling cairo_save()
    /// before and cairo_restore() after invoking the handler.
    ///
    /// The signal handler will get a @cr with a clip region already set to the
    /// widget's dirty region, i.e. to the area that needs repainting.  Complicated
    /// widgets that want to avoid redrawing themselves completely can get the full
    /// extents of the clip region with gdk_cairo_get_clip_rectangle(), or they can
    /// get a finer-grained representation of the dirty region with
    /// cairo_copy_clip_rectangle_list().
    ///
    ///
    ///
    ///
    /// #### `enter-notify-event`
    ///  The ::enter-notify-event will be emitted when the pointer enters
    /// the @widget's window.
    ///
    /// To receive this signal, the #GdkWindow associated to the widget needs
    /// to enable the #GDK_ENTER_NOTIFY_MASK mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `event`
    ///  The GTK+ main loop will emit three signals for each GDK event delivered
    /// to a widget: one generic ::event signal, another, more specific,
    /// signal that matches the type of event delivered (e.g.
    /// #GtkWidget::key-press-event) and finally a generic
    /// #GtkWidget::event-after signal.
    ///
    ///
    ///
    ///
    /// #### `event-after`
    ///  After the emission of the #GtkWidget::event signal and (optionally)
    /// the second more specific signal, ::event-after will be emitted
    /// regardless of the previous two signals handlers return values.
    ///
    ///
    ///
    ///
    /// #### `focus`
    ///
    ///
    ///
    /// #### `focus-in-event`
    ///  The ::focus-in-event signal will be emitted when the keyboard focus
    /// enters the @widget's window.
    ///
    /// To receive this signal, the #GdkWindow associated to the widget needs
    /// to enable the #GDK_FOCUS_CHANGE_MASK mask.
    ///
    ///
    ///
    ///
    /// #### `focus-out-event`
    ///  The ::focus-out-event signal will be emitted when the keyboard focus
    /// leaves the @widget's window.
    ///
    /// To receive this signal, the #GdkWindow associated to the widget needs
    /// to enable the #GDK_FOCUS_CHANGE_MASK mask.
    ///
    ///
    ///
    ///
    /// #### `grab-broken-event`
    ///  Emitted when a pointer or keyboard grab on a window belonging
    /// to @widget gets broken.
    ///
    /// On X11, this happens when the grab window becomes unviewable
    /// (i.e. it or one of its ancestors is unmapped), or if the same
    /// application grabs the pointer or keyboard again.
    ///
    ///
    ///
    ///
    /// #### `grab-focus`
    ///  Action
    ///
    ///
    /// #### `grab-notify`
    ///  The ::grab-notify signal is emitted when a widget becomes
    /// shadowed by a GTK+ grab (not a pointer or keyboard grab) on
    /// another widget, or when it becomes unshadowed due to a grab
    /// being removed.
    ///
    /// A widget is shadowed by a gtk_grab_add() when the topmost
    /// grab widget in the grab stack of its window group is not
    /// its ancestor.
    ///
    ///
    ///
    ///
    /// #### `hide`
    ///  The ::hide signal is emitted when @widget is hidden, for example with
    /// gtk_widget_hide().
    ///
    ///
    ///
    ///
    /// #### `hierarchy-changed`
    ///  The ::hierarchy-changed signal is emitted when the
    /// anchored state of a widget changes. A widget is
    /// “anchored” when its toplevel
    /// ancestor is a #GtkWindow. This signal is emitted when
    /// a widget changes from un-anchored to anchored or vice-versa.
    ///
    ///
    ///
    ///
    /// #### `key-press-event`
    ///  The ::key-press-event signal is emitted when a key is pressed. The signal
    /// emission will reoccur at the key-repeat rate when the key is kept pressed.
    ///
    /// To receive this signal, the #GdkWindow associated to the widget needs
    /// to enable the #GDK_KEY_PRESS_MASK mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `key-release-event`
    ///  The ::key-release-event signal is emitted when a key is released.
    ///
    /// To receive this signal, the #GdkWindow associated to the widget needs
    /// to enable the #GDK_KEY_RELEASE_MASK mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `keynav-failed`
    ///  Gets emitted if keyboard navigation fails.
    /// See gtk_widget_keynav_failed() for details.
    ///
    ///
    ///
    ///
    /// #### `leave-notify-event`
    ///  The ::leave-notify-event will be emitted when the pointer leaves
    /// the @widget's window.
    ///
    /// To receive this signal, the #GdkWindow associated to the widget needs
    /// to enable the #GDK_LEAVE_NOTIFY_MASK mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `map`
    ///  The ::map signal is emitted when @widget is going to be mapped, that is
    /// when the widget is visible (which is controlled with
    /// gtk_widget_set_visible()) and all its parents up to the toplevel widget
    /// are also visible. Once the map has occurred, #GtkWidget::map-event will
    /// be emitted.
    ///
    /// 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 #GtkWidget::unmap.
    ///
    ///
    ///
    ///
    /// #### `map-event`
    ///  The ::map-event signal will be emitted when the @widget's window is
    /// mapped. A window is mapped when it becomes visible on the screen.
    ///
    /// To receive this signal, the #GdkWindow associated to the widget needs
    /// to enable the #GDK_STRUCTURE_MASK mask. GDK will enable this mask
    /// automatically for all new windows.
    ///
    ///
    ///
    ///
    /// #### `mnemonic-activate`
    ///  The default handler for this signal activates @widget if @group_cycling
    /// is [`false`], or just makes @widget grab focus if @group_cycling is [`true`].
    ///
    ///
    ///
    ///
    /// #### `motion-notify-event`
    ///  The ::motion-notify-event signal is emitted when the pointer moves
    /// over the widget's #GdkWindow.
    ///
    /// To receive this signal, the #GdkWindow associated to the widget
    /// needs to enable the #GDK_POINTER_MOTION_MASK mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `move-focus`
    ///  Action
    ///
    ///
    /// #### `parent-set`
    ///  The ::parent-set signal is emitted when a new parent
    /// has been set on a widget.
    ///
    ///
    ///
    ///
    /// #### `popup-menu`
    ///  This signal gets emitted whenever a widget should pop up a context
    /// menu. This usually happens through the standard key binding mechanism;
    /// by pressing a certain key while a widget is focused, the user can cause
    /// the widget to pop up a menu.  For example, the #GtkEntry widget creates
    /// a menu with clipboard commands. See the
    /// [Popup Menu Migration Checklist][checklist-popup-menu]
    /// for an example of how to use this signal.
    ///
    /// Action
    ///
    ///
    /// #### `property-notify-event`
    ///  The ::property-notify-event signal will be emitted when a property on
    /// the @widget's window has been changed or deleted.
    ///
    /// To receive this signal, the #GdkWindow associated to the widget needs
    /// to enable the #GDK_PROPERTY_CHANGE_MASK mask.
    ///
    ///
    ///
    ///
    /// #### `proximity-in-event`
    ///  To receive this signal the #GdkWindow associated to the widget needs
    /// to enable the #GDK_PROXIMITY_IN_MASK mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `proximity-out-event`
    ///  To receive this signal the #GdkWindow associated to the widget needs
    /// to enable the #GDK_PROXIMITY_OUT_MASK mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `query-tooltip`
    ///  Emitted when #GtkWidget:has-tooltip 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`
    ///  The ::realize signal is emitted when @widget is associated with a
    /// #GdkWindow, which means that gtk_widget_realize() has been called or the
    /// widget has been mapped (that is, it is going to be drawn).
    ///
    ///
    ///
    ///
    /// #### `screen-changed`
    ///  The ::screen-changed signal gets emitted when the
    /// screen of a widget has changed.
    ///
    ///
    ///
    ///
    /// #### `scroll-event`
    ///  The ::scroll-event signal is emitted when a button in the 4 to 7
    /// range is pressed. Wheel mice are usually configured to generate
    /// button press events for buttons 4 and 5 when the wheel is turned.
    ///
    /// To receive this signal, the #GdkWindow associated to the widget needs
    /// to enable the #GDK_SCROLL_MASK mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `selection-clear-event`
    ///  The ::selection-clear-event signal will be emitted when the
    /// the @widget's window has lost ownership of a selection.
    ///
    ///
    ///
    ///
    /// #### `selection-get`
    ///
    ///
    ///
    /// #### `selection-notify-event`
    ///
    ///
    ///
    /// #### `selection-received`
    ///
    ///
    ///
    /// #### `selection-request-event`
    ///  The ::selection-request-event signal will be emitted when
    /// another client requests ownership of the selection owned by
    /// the @widget's window.
    ///
    ///
    ///
    ///
    /// #### `show`
    ///  The ::show signal is emitted when @widget is shown, for example with
    /// gtk_widget_show().
    ///
    ///
    ///
    ///
    /// #### `show-help`
    ///  Action
    ///
    ///
    /// #### `size-allocate`
    ///
    ///
    ///
    /// #### `state-changed`
    ///  The ::state-changed signal is emitted when the widget state changes.
    /// See gtk_widget_get_state().
    ///
    ///
    ///
    ///
    /// #### `state-flags-changed`
    ///  The ::state-flags-changed signal is emitted when the widget state
    /// changes, see gtk_widget_get_state_flags().
    ///
    ///
    ///
    ///
    /// #### `style-set`
    ///  The ::style-set signal is emitted when a new style has been set
    /// on a widget. Note that style-modifying functions like
    /// gtk_widget_modify_base() also cause this signal to be emitted.
    ///
    /// Note that this signal is emitted for changes to the deprecated
    /// #GtkStyle. To track changes to the #GtkStyleContext associated
    /// with a widget, use the #GtkWidget::style-updated signal.
    ///
    ///
    ///
    ///
    /// #### `style-updated`
    ///  The ::style-updated signal is a convenience signal that is emitted when the
    /// #GtkStyleContext::changed signal is emitted on the @widget's associated
    /// #GtkStyleContext as returned by gtk_widget_get_style_context().
    ///
    /// Note that style-modifying functions like gtk_widget_override_color() also
    /// cause this signal to be emitted.
    ///
    ///
    ///
    ///
    /// #### `touch-event`
    ///
    ///
    ///
    /// #### `unmap`
    ///  The ::unmap signal is emitted when @widget is going to be unmapped, which
    /// means that 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.
    ///
    ///
    ///
    ///
    /// #### `unmap-event`
    ///  The ::unmap-event signal will be emitted when the @widget's window is
    /// unmapped. A window is unmapped when it becomes invisible on the screen.
    ///
    /// To receive this signal, the #GdkWindow associated to the widget needs
    /// to enable the #GDK_STRUCTURE_MASK mask. GDK will enable this mask
    /// automatically for all new windows.
    ///
    ///
    ///
    ///
    /// #### `unrealize`
    ///  The ::unrealize signal is emitted when the #GdkWindow associated with
    /// @widget is destroyed, which means that gtk_widget_unrealize() has been
    /// called or the widget has been unmapped (that is, it is going to be
    /// hidden).
    ///
    ///
    ///
    ///
    /// #### `visibility-notify-event`
    ///  The ::visibility-notify-event will be emitted when the @widget's
    /// window is obscured or unobscured.
    ///
    /// To receive this signal the #GdkWindow associated to the widget needs
    /// to enable the #GDK_VISIBILITY_NOTIFY_MASK mask.
    ///
    ///
    ///
    ///
    /// #### `window-state-event`
    ///  The ::window-state-event will be emitted when the state of the
    /// toplevel window associated to the @widget changes.
    ///
    /// To receive this signal the #GdkWindow associated to the widget
    /// needs to enable the #GDK_STRUCTURE_MASK mask. GDK will enable
    /// this mask automatically for all new windows.
    ///
    ///
    /// </details>
    ///
    /// # Implements
    ///
    /// [`SwipeableExt`][trait@crate::prelude::SwipeableExt], [`trait@gtk::prelude::WidgetExt`], [`trait@glib::ObjectExt`], [`trait@gtk::prelude::BuildableExt`]
    #[doc(alias = "HdySwipeable")]
    pub struct Swipeable(Interface<ffi::HdySwipeable, ffi::HdySwipeableInterface>) @requires gtk::Widget, gtk::Buildable;

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

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

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

/// Trait containing all [`struct@Swipeable`] methods.
///
/// # Implementors
///
/// [`Carousel`][struct@crate::Carousel], [`Deck`][struct@crate::Deck], [`Flap`][struct@crate::Flap], [`Leaflet`][struct@crate::Leaflet], [`Swipeable`][struct@crate::Swipeable]
pub trait SwipeableExt: IsA<Swipeable> + sealed::Sealed + 'static {
    /// Emits [`child-switched`][struct@crate::Swipeable#child-switched] signal.
    ///
    /// This should be called when the widget switches visible child widget.
    ///
    /// @duration can be 0 if the child is switched without animation.
    /// ## `index`
    /// the index of the child to switch to
    /// ## `duration`
    /// animation duration, in milliseconds
    #[doc(alias = "hdy_swipeable_emit_child_switched")]
    fn emit_child_switched(&self, index: u32, duration: i64) {
        unsafe {
            ffi::hdy_swipeable_emit_child_switched(self.as_ref().to_glib_none().0, index, duration);
        }
    }

    /// Gets the progress @self will snap back to after the gesture is canceled.
    ///
    /// # Returns
    ///
    /// the cancel progress, unitless
    #[doc(alias = "hdy_swipeable_get_cancel_progress")]
    #[doc(alias = "get_cancel_progress")]
    fn cancel_progress(&self) -> f64 {
        unsafe { ffi::hdy_swipeable_get_cancel_progress(self.as_ref().to_glib_none().0) }
    }

    /// Gets the swipe distance of @self.
    ///
    /// This corresponds to how many pixels 1 unit represents.
    ///
    /// # Returns
    ///
    /// the swipe distance in pixels
    #[doc(alias = "hdy_swipeable_get_distance")]
    #[doc(alias = "get_distance")]
    fn distance(&self) -> f64 {
        unsafe { ffi::hdy_swipeable_get_distance(self.as_ref().to_glib_none().0) }
    }

    /// Gets the current progress of @self.
    ///
    /// # Returns
    ///
    /// the current progress, unitless
    #[doc(alias = "hdy_swipeable_get_progress")]
    #[doc(alias = "get_progress")]
    fn progress(&self) -> f64 {
        unsafe { ffi::hdy_swipeable_get_progress(self.as_ref().to_glib_none().0) }
    }

    /// Gets the snap points of @self.
    ///
    /// Each snap point represents a progress value that is considered acceptable to
    /// end the swipe on.
    ///
    /// # Returns
    ///
    /// the snap points
    #[doc(alias = "hdy_swipeable_get_snap_points")]
    #[doc(alias = "get_snap_points")]
    fn snap_points(&self) -> Vec<f64> {
        unsafe {
            let mut n_snap_points = mem::MaybeUninit::uninit();
            let ret = FromGlibContainer::from_glib_full_num(
                ffi::hdy_swipeable_get_snap_points(
                    self.as_ref().to_glib_none().0,
                    n_snap_points.as_mut_ptr(),
                ),
                n_snap_points.assume_init() as _,
            );
            ret
        }
    }

    /// Gets the area @self can start a swipe from for the given direction and
    /// gesture type.
    ///
    /// This can be used to restrict swipes to only be possible from a certain area,
    /// for example, to only allow edge swipes, or to have a draggable element and
    /// ignore swipes elsewhere.
    ///
    /// Swipe area is only considered for direct swipes (as in, not initiated by
    /// [`SwipeGroup`][crate::SwipeGroup]).
    ///
    /// If not implemented, the default implementation returns the allocation of
    /// @self, allowing swipes from anywhere.
    /// ## `navigation_direction`
    /// the direction of the swipe
    /// ## `is_drag`
    /// whether the swipe is caused by a dragging gesture
    ///
    /// # Returns
    ///
    ///
    /// ## `rect`
    /// a pointer to a rectangle to store the swipe area
    #[doc(alias = "hdy_swipeable_get_swipe_area")]
    #[doc(alias = "get_swipe_area")]
    fn swipe_area(
        &self,
        navigation_direction: NavigationDirection,
        is_drag: bool,
    ) -> gdk::Rectangle {
        unsafe {
            let mut rect = gdk::Rectangle::uninitialized();
            ffi::hdy_swipeable_get_swipe_area(
                self.as_ref().to_glib_none().0,
                navigation_direction.into_glib(),
                is_drag.into_glib(),
                rect.to_glib_none_mut().0,
            );
            rect
        }
    }

    /// Gets the [`SwipeTracker`][crate::SwipeTracker] used by this swipeable widget.
    ///
    /// # Returns
    ///
    /// the swipe tracker
    #[doc(alias = "hdy_swipeable_get_swipe_tracker")]
    #[doc(alias = "get_swipe_tracker")]
    fn swipe_tracker(&self) -> Option<SwipeTracker> {
        unsafe {
            from_glib_none(ffi::hdy_swipeable_get_swipe_tracker(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Switches to child with index @index.
    ///
    /// See [`child-switched`][struct@crate::Swipeable#child-switched].
    /// ## `index`
    /// the index of the child to switch to
    /// ## `duration`
    /// animation duration, in milliseconds
    #[doc(alias = "hdy_swipeable_switch_child")]
    fn switch_child(&self, index: u32, duration: i64) {
        unsafe {
            ffi::hdy_swipeable_switch_child(self.as_ref().to_glib_none().0, index, duration);
        }
    }

    /// Emitted when the widget's visible child is changed.
    ///
    /// @duration can be 0 if the child is switched without animation.
    ///
    /// This is used by [`SwipeGroup`][crate::SwipeGroup], applications should not connect to it.
    /// ## `index`
    /// the index of the child to switch to
    /// ## `duration`
    /// animation duration, in milliseconds
    #[doc(alias = "child-switched")]
    fn connect_child_switched<F: Fn(&Self, u32, i64) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn child_switched_trampoline<
            P: IsA<Swipeable>,
            F: Fn(&P, u32, i64) + 'static,
        >(
            this: *mut ffi::HdySwipeable,
            index: libc::c_uint,
            duration: i64,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(
                Swipeable::from_glib_borrow(this).unsafe_cast_ref(),
                index,
                duration,
            )
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"child-switched\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    child_switched_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }
}

impl<O: IsA<Swipeable>> SwipeableExt for O {}

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