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

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

glib::wrapper! {
    /// [`EventController`][crate::EventController] is the base class for event controllers.
    ///
    /// These are ancillary objects associated to widgets, which react
    /// to `GdkEvents`, and possibly trigger actions as a consequence.
    ///
    /// Event controllers are added to a widget with
    /// [`WidgetExt::add_controller()`][crate::prelude::WidgetExt::add_controller()]. It is rarely necessary to
    /// explicitly remove a controller with [`WidgetExt::remove_controller()`][crate::prelude::WidgetExt::remove_controller()].
    ///
    /// See the chapter on [input handling](input-handling.html) for
    /// an overview of the basic concepts, such as the capture and bubble
    /// phases of event propagation.
    ///
    /// This is an Abstract Base Class, you cannot instantiate it.
    ///
    /// ## Properties
    ///
    ///
    /// #### `name`
    ///  The name for this controller, typically used for debugging purposes.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `propagation-limit`
    ///  The limit for which events this controller will handle.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `propagation-phase`
    ///  The propagation phase at which this controller will handle events.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `widget`
    ///  The widget receiving the `GdkEvents` that the controller will handle.
    ///
    /// Readable
    ///
    /// # Implements
    ///
    /// [`EventControllerExt`][trait@crate::prelude::EventControllerExt], [`trait@glib::ObjectExt`]
    #[doc(alias = "GtkEventController")]
    pub struct EventController(Object<ffi::GtkEventController, ffi::GtkEventControllerClass>);

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

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

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

/// Trait containing all [`struct@EventController`] methods.
///
/// # Implementors
///
/// [`DropControllerMotion`][struct@crate::DropControllerMotion], [`DropTargetAsync`][struct@crate::DropTargetAsync], [`DropTarget`][struct@crate::DropTarget], [`EventControllerFocus`][struct@crate::EventControllerFocus], [`EventControllerKey`][struct@crate::EventControllerKey], [`EventControllerLegacy`][struct@crate::EventControllerLegacy], [`EventControllerMotion`][struct@crate::EventControllerMotion], [`EventControllerScroll`][struct@crate::EventControllerScroll], [`EventController`][struct@crate::EventController], [`Gesture`][struct@crate::Gesture], [`PadController`][struct@crate::PadController], [`ShortcutController`][struct@crate::ShortcutController]
pub trait EventControllerExt: IsA<EventController> + sealed::Sealed + 'static {
    /// Returns the event that is currently being handled by the controller.
    ///
    /// At other times, [`None`] is returned.
    ///
    /// # Returns
    ///
    /// the event that is currently
    ///   handled by @self
    #[doc(alias = "gtk_event_controller_get_current_event")]
    #[doc(alias = "get_current_event")]
    fn current_event(&self) -> Option<gdk::Event> {
        unsafe {
            from_glib_none(ffi::gtk_event_controller_get_current_event(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Returns the device of the event that is currently being
    /// handled by the controller.
    ///
    /// At other times, [`None`] is returned.
    ///
    /// # Returns
    ///
    /// device of the event is
    ///   currently handled by @self
    #[doc(alias = "gtk_event_controller_get_current_event_device")]
    #[doc(alias = "get_current_event_device")]
    fn current_event_device(&self) -> Option<gdk::Device> {
        unsafe {
            from_glib_none(ffi::gtk_event_controller_get_current_event_device(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Returns the modifier state of the event that is currently being
    /// handled by the controller.
    ///
    /// At other times, 0 is returned.
    ///
    /// # Returns
    ///
    /// modifier state of the event is currently handled by @self
    #[doc(alias = "gtk_event_controller_get_current_event_state")]
    #[doc(alias = "get_current_event_state")]
    fn current_event_state(&self) -> gdk::ModifierType {
        unsafe {
            from_glib(ffi::gtk_event_controller_get_current_event_state(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Returns the timestamp of the event that is currently being
    /// handled by the controller.
    ///
    /// At other times, 0 is returned.
    ///
    /// # Returns
    ///
    /// timestamp of the event is currently handled by @self
    #[doc(alias = "gtk_event_controller_get_current_event_time")]
    #[doc(alias = "get_current_event_time")]
    fn current_event_time(&self) -> u32 {
        unsafe { ffi::gtk_event_controller_get_current_event_time(self.as_ref().to_glib_none().0) }
    }

    /// Gets the name of @self.
    ///
    /// # Returns
    ///
    /// The controller name
    #[doc(alias = "gtk_event_controller_get_name")]
    #[doc(alias = "get_name")]
    fn name(&self) -> Option<glib::GString> {
        unsafe {
            from_glib_none(ffi::gtk_event_controller_get_name(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Gets the propagation limit of the event controller.
    ///
    /// # Returns
    ///
    /// the propagation limit
    #[doc(alias = "gtk_event_controller_get_propagation_limit")]
    #[doc(alias = "get_propagation_limit")]
    fn propagation_limit(&self) -> PropagationLimit {
        unsafe {
            from_glib(ffi::gtk_event_controller_get_propagation_limit(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Gets the propagation phase at which @self handles events.
    ///
    /// # Returns
    ///
    /// the propagation phase
    #[doc(alias = "gtk_event_controller_get_propagation_phase")]
    #[doc(alias = "get_propagation_phase")]
    fn propagation_phase(&self) -> PropagationPhase {
        unsafe {
            from_glib(ffi::gtk_event_controller_get_propagation_phase(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Returns the [`Widget`][crate::Widget] this controller relates to.
    ///
    /// # Returns
    ///
    /// a [`Widget`][crate::Widget]
    #[doc(alias = "gtk_event_controller_get_widget")]
    #[doc(alias = "get_widget")]
    fn widget(&self) -> Widget {
        unsafe {
            from_glib_none(ffi::gtk_event_controller_get_widget(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Resets the @self to a clean state.
    #[doc(alias = "gtk_event_controller_reset")]
    fn reset(&self) {
        unsafe {
            ffi::gtk_event_controller_reset(self.as_ref().to_glib_none().0);
        }
    }

    /// Sets a name on the controller that can be used for debugging.
    /// ## `name`
    /// a name for @self
    #[doc(alias = "gtk_event_controller_set_name")]
    fn set_name(&self, name: Option<&str>) {
        unsafe {
            ffi::gtk_event_controller_set_name(
                self.as_ref().to_glib_none().0,
                name.to_glib_none().0,
            );
        }
    }

    /// Sets the event propagation limit on the event controller.
    ///
    /// If the limit is set to [`PropagationLimit::SameNative`][crate::PropagationLimit::SameNative], the controller
    /// won't handle events that are targeted at widgets on a different
    /// surface, such as popovers.
    /// ## `limit`
    /// the propagation limit
    #[doc(alias = "gtk_event_controller_set_propagation_limit")]
    fn set_propagation_limit(&self, limit: PropagationLimit) {
        unsafe {
            ffi::gtk_event_controller_set_propagation_limit(
                self.as_ref().to_glib_none().0,
                limit.into_glib(),
            );
        }
    }

    /// Sets the propagation phase at which a controller handles events.
    ///
    /// If @phase is [`PropagationPhase::None`][crate::PropagationPhase::None], no automatic event handling will be
    /// performed, but other additional gesture maintenance will.
    /// ## `phase`
    /// a propagation phase
    #[doc(alias = "gtk_event_controller_set_propagation_phase")]
    fn set_propagation_phase(&self, phase: PropagationPhase) {
        unsafe {
            ffi::gtk_event_controller_set_propagation_phase(
                self.as_ref().to_glib_none().0,
                phase.into_glib(),
            );
        }
    }

    /// Sets a name on the controller that can be used for debugging.
    /// ## `name`
    /// a name for @self, must be a static string
    #[cfg(feature = "v4_8")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_8")))]
    #[doc(alias = "gtk_event_controller_set_static_name")]
    fn set_static_name(&self, name: Option<&str>) {
        unsafe {
            ffi::gtk_event_controller_set_static_name(
                self.as_ref().to_glib_none().0,
                name.to_glib_none().0,
            );
        }
    }

    #[doc(alias = "name")]
    fn connect_name_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_name_trampoline<
            P: IsA<EventController>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkEventController,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(EventController::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::name\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_name_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "propagation-limit")]
    fn connect_propagation_limit_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_propagation_limit_trampoline<
            P: IsA<EventController>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkEventController,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(EventController::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::propagation-limit\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_propagation_limit_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "propagation-phase")]
    fn connect_propagation_phase_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_propagation_phase_trampoline<
            P: IsA<EventController>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkEventController,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(EventController::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::propagation-phase\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_propagation_phase_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "widget")]
    fn connect_widget_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_widget_trampoline<
            P: IsA<EventController>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkEventController,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(EventController::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::widget\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_widget_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }
}

impl<O: IsA<EventController>> EventControllerExt for O {}

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