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

use crate::Edge;
use crate::EditMode;
use crate::Extractable;
use crate::Layer;
use crate::TimelineElement;
use crate::Track;
use crate::TrackType;
use glib::object::Cast;
use glib::object::IsA;
use glib::signal::connect_raw;
use glib::signal::SignalHandlerId;
use glib::translate::*;
use std::boxed::Box as Box_;
use std::mem::transmute;

glib::wrapper! {
    /// A [`crate::TrackElement`] is a [`crate::TimelineElement`] that specifically belongs
    /// to a single [`crate::Track`] of its [`crate::TimelineElement:timeline`]. Its
    /// [`crate::TimelineElement:start`] and [`crate::TimelineElement:duration`] specify its
    /// temporal extent in the track. Specifically, a track element wraps some
    /// nleobject, such as an `nlesource` or `nleoperation`, which can be
    /// retrieved with [`crate::prelude::TrackElementExt::get_nleobject()`], and its
    /// [`crate::TimelineElement:start`], [`crate::TimelineElement:duration`],
    /// [`crate::TimelineElement:in-point`], [`crate::TimelineElement:priority`] and
    /// [`crate::TrackElement:active`] properties expose the corresponding nleobject
    /// properties. When a track element is added to a track, its nleobject is
    /// added to the corresponding `nlecomposition` that the track wraps.
    ///
    /// Most users will not have to work directly with track elements since a
    /// [`crate::Clip`] will automatically create track elements for its timeline's
    /// tracks and take responsibility for updating them. The only track
    /// elements that are not automatically created by clips, but a user is
    /// likely to want to create, are [`crate::Effect`]-s.
    ///
    /// ## Control Bindings for Children Properties
    ///
    /// You can set up control bindings for a track element child property
    /// using [`crate::prelude::TrackElementExt::set_control_source()`]. A
    /// `GstTimedValueControlSource` should specify the timed values using the
    /// internal source coordinates (see [`crate::TimelineElement`]). By default,
    /// these will be updated to lie between the [`crate::TimelineElement:in-point`]
    /// and out-point of the element. This can be switched off by setting
    /// [`crate::TrackElement:auto-clamp-control-sources`] to [`false`].
    ///
    /// This is an Abstract Base Class, you cannot instantiate it.
    ///
    /// # Implements
    ///
    /// [`trait@crate::prelude::TrackElementExt`], [`trait@crate::prelude::TimelineElementExt`], [`trait@glib::object::ObjectExt`], [`trait@crate::prelude::ExtractableExt`], [`trait@crate::prelude::TimelineElementExtManual`]
    pub struct TrackElement(Object<ffi::GESTrackElement, ffi::GESTrackElementClass>) @extends TimelineElement, @implements Extractable;

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

pub const NONE_TRACK_ELEMENT: Option<&TrackElement> = None;

/// Trait containing all `TrackElement` methods.
///
/// # Implementors
///
/// [`struct@crate::TrackElement`]
pub trait TrackElementExt: 'static {
    /// Adds all the properties of a [`crate::gst::Element`] that match the criteria as
    /// children properties of the track element. If the name of `element`'s
    /// [`crate::gst::ElementFactory`] is not in `blacklist`, and the factory's
    /// `GST_ELEMENT_METADATA_KLASS` contains at least one member of
    /// `wanted_categories` (e.g. `GST_ELEMENT_FACTORY_KLASS_DECODER`), then
    /// all the properties of `element` that are also in `whitelist` are added as
    /// child properties of `self` using
    /// [`crate::prelude::TimelineElementExt::add_child_property()`].
    ///
    /// This is intended to be used by subclasses when constructing.
    /// ## `element`
    /// The child object to retrieve properties from
    /// ## `wanted_categories`
    ///
    /// An array of element factory "klass" categories to whitelist, or [`None`]
    /// to accept all categories
    /// ## `blacklist`
    /// A
    /// blacklist of element factory names, or [`None`] to not blacklist any
    /// element factory
    /// ## `whitelist`
    /// A
    /// whitelist of element property names, or [`None`] to whitelist all
    /// writeable properties
    #[doc(alias = "ges_track_element_add_children_props")]
    fn add_children_props<P: IsA<gst::Element>>(
        &self,
        element: &P,
        wanted_categories: &[&str],
        blacklist: &[&str],
        whitelist: &[&str],
    );

    /// Clamp the `GstTimedValueControlSource` for the specified child property
    /// to lie between the [`crate::TimelineElement:in-point`] and out-point of the
    /// element. The out-point is the `GES_TIMELINE_ELEMENT_END` of the element
    /// translated from the timeline coordinates to the internal source
    /// coordinates of the element.
    ///
    /// If the property does not have a `GstTimedValueControlSource` set by
    /// [`Self::set_control_source()`], nothing happens. Otherwise, if
    /// a timed value for the control source lies before the in-point of the
    /// element, or after its out-point, then it will be removed. At the
    /// in-point and out-point times, a new interpolated value will be placed.
    /// ## `property_name`
    /// The name of the child property to clamp the control
    /// source of
    #[cfg(any(feature = "v1_18", feature = "dox"))]
    #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_18")))]
    #[doc(alias = "ges_track_element_clamp_control_source")]
    fn clamp_control_source(&self, property_name: &str);

    /// Edits the element within its track.
    ///
    /// # Deprecated since 1.18
    ///
    /// use [`crate::prelude::TimelineElementExt::edit`] instead.
    /// ## `layers`
    /// A whitelist of layers
    /// where the edit can be performed, [`None`] allows all layers in the
    /// timeline
    /// ## `mode`
    /// The edit mode
    /// ## `edge`
    /// The edge of `self` where the edit should occur
    /// ## `position`
    /// The edit position: a new location for the edge of `self`
    /// (in nanoseconds)
    ///
    /// # Returns
    ///
    /// [`true`] if the edit of `self` completed, [`false`] on failure.
    #[cfg_attr(feature = "v1_18", deprecated = "Since 1.18")]
    #[doc(alias = "ges_track_element_edit")]
    fn edit(
        &self,
        layers: &[Layer],
        mode: EditMode,
        edge: Edge,
        position: u64,
    ) -> Result<(), glib::error::BoolError>;

    //#[doc(alias = "ges_track_element_get_all_control_bindings")]
    //#[doc(alias = "get_all_control_bindings")]
    //fn all_control_bindings(&self) -> /*Unknown conversion*//*Unimplemented*/HashTable TypeId { ns_id: 0, id: 28 }/TypeId { ns_id: 6, id: 83 };

    /// Gets [`crate::TrackElement:auto-clamp-control-sources`].
    ///
    /// # Returns
    ///
    /// Whether the control sources for the child properties of
    /// `self` are automatically clamped.
    #[cfg(any(feature = "v1_18", feature = "dox"))]
    #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_18")))]
    #[doc(alias = "ges_track_element_get_auto_clamp_control_sources")]
    #[doc(alias = "get_auto_clamp_control_sources")]
    fn is_auto_clamp_control_sources(&self) -> bool;

    //#[doc(alias = "ges_track_element_get_control_binding")]
    //#[doc(alias = "get_control_binding")]
    //fn control_binding(&self, property_name: &str) -> /*Ignored*/Option<gst::ControlBinding>;

    /// Get the [`crate::gst::Element`] that the track element's underlying nleobject
    /// controls.
    ///
    /// # Returns
    ///
    /// The [`crate::gst::Element`] being controlled by the
    /// nleobject that `self` wraps.
    #[doc(alias = "ges_track_element_get_element")]
    #[doc(alias = "get_element")]
    fn element(&self) -> Option<gst::Element>;

    /// Get the GNonLin object this object is controlling.
    ///
    /// # Deprecated
    ///
    /// use [`Self::get_nleobject`] instead.
    ///
    /// # Returns
    ///
    /// The GNonLin object this object is controlling.
    #[doc(alias = "ges_track_element_get_gnlobject")]
    #[doc(alias = "get_gnlobject")]
    fn gnlobject(&self) -> Option<gst::Element>;

    /// Get the nleobject that this element wraps.
    ///
    /// # Returns
    ///
    /// The nleobject that `self` wraps.
    #[doc(alias = "ges_track_element_get_nleobject")]
    #[doc(alias = "get_nleobject")]
    fn nleobject(&self) -> Option<gst::Element>;

    /// Get the [`crate::TrackElement:track`] for the element.
    ///
    /// # Returns
    ///
    /// The track that `self` belongs to,
    /// or [`None`] if it does not belong to a track.
    #[doc(alias = "ges_track_element_get_track")]
    #[doc(alias = "get_track")]
    fn track(&self) -> Option<Track>;

    /// Gets the [`crate::TrackElement:track-type`] for the element.
    ///
    /// # Returns
    ///
    /// The track-type of `self`.
    #[doc(alias = "ges_track_element_get_track_type")]
    #[doc(alias = "get_track_type")]
    fn track_type(&self) -> TrackType;

    /// Gets [`crate::TrackElement:has-internal-source`] for the element.
    ///
    /// # Returns
    ///
    /// [`true`] if `self` can have its 'internal time' properties set.
    #[cfg(any(feature = "v1_18", feature = "dox"))]
    #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_18")))]
    #[doc(alias = "ges_track_element_has_internal_source")]
    fn has_internal_source(&self) -> bool;

    /// Gets [`crate::TrackElement:active`] for the element.
    ///
    /// # Returns
    ///
    /// [`true`] if `self` is active in its track.
    #[doc(alias = "ges_track_element_is_active")]
    fn is_active(&self) -> bool;

    /// Get whether the given track element is a core track element. That is,
    /// it was created by the `create_track_elements` [`crate::ClipClass`] method for
    /// some [`crate::Clip`].
    ///
    /// Note that such a track element can only be added to a clip that shares
    /// the same [`crate::Asset`] as the clip that created it. For example, you are
    /// allowed to move core children between clips that resulted from
    /// [`crate::prelude::GESContainerExt::ungroup()`], but you could not move the core child from a
    /// [`crate::UriClip`] to a [`crate::TitleClip`] or another [`crate::UriClip`] with a different
    /// [`crate::UriClip:uri`].
    ///
    /// Moreover, if a core track element is added to a clip, it will always be
    /// added as a core child. Therefore, if this returns [`true`], then `element`
    /// will be a core child of its parent clip.
    ///
    /// # Returns
    ///
    /// [`true`] if `element` is a core track element.
    #[cfg(any(feature = "v1_18", feature = "dox"))]
    #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_18")))]
    #[doc(alias = "ges_track_element_is_core")]
    fn is_core(&self) -> bool;

    //#[doc(alias = "ges_track_element_lookup_child")]
    //fn lookup_child(&self, prop_name: &str, pspec: /*Ignored*/glib::ParamSpec) -> Option<gst::Element>;

    /// Removes the [`crate::gst::ControlBinding`] that was created for the specified child
    /// property of the track element using
    /// [`Self::set_control_source()`]. The given `property_name` must
    /// be the same name of the child property that was passed to
    /// [`Self::set_control_source()`].
    /// ## `property_name`
    /// The name of the child property to remove the control
    /// binding from
    ///
    /// # Returns
    ///
    /// [`true`] if the control binding was removed from the specified
    /// child property of `self`, or [`false`] if an error occurred.
    #[doc(alias = "ges_track_element_remove_control_binding")]
    fn remove_control_binding(&self, property_name: &str) -> Result<(), glib::error::BoolError>;

    /// Sets [`crate::TrackElement:active`] for the element.
    /// ## `active`
    /// Whether `self` should be active in its track
    ///
    /// # Returns
    ///
    /// [`true`] if the property was *toggled*.
    #[doc(alias = "ges_track_element_set_active")]
    fn set_active(&self, active: bool) -> bool;

    /// Sets [`crate::TrackElement:auto-clamp-control-sources`]. If set to [`true`], this
    /// will immediately clamp all the control sources.
    /// ## `auto_clamp`
    /// Whether to automatically clamp the control sources for the
    /// child properties of `self`
    #[cfg(any(feature = "v1_18", feature = "dox"))]
    #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_18")))]
    #[doc(alias = "ges_track_element_set_auto_clamp_control_sources")]
    fn set_auto_clamp_control_sources(&self, auto_clamp: bool);

    //#[doc(alias = "ges_track_element_set_control_source")]
    //fn set_control_source(&self, source: /*Ignored*/&gst::ControlSource, property_name: &str, binding_type: &str) -> bool;

    /// Sets [`crate::TrackElement:has-internal-source`] for the element. If this is
    /// set to [`false`], this method will also set the
    /// [`crate::TimelineElement:in-point`] of the element to 0 and its
    /// [`crate::TimelineElement:max-duration`] to `GST_CLOCK_TIME_NONE`.
    /// ## `has_internal_source`
    /// Whether the `self` should be allowed to have its
    /// 'internal time' properties set.
    ///
    /// # Returns
    ///
    /// [`false`] if `has_internal_source` is forbidden for `self` and
    /// [`true`] in any other case.
    #[cfg(any(feature = "v1_18", feature = "dox"))]
    #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_18")))]
    #[doc(alias = "ges_track_element_set_has_internal_source")]
    fn set_has_internal_source(&self, has_internal_source: bool) -> bool;

    /// Sets the [`crate::TrackElement:track-type`] for the element.
    /// ## `type_`
    /// The new track-type for `self`
    #[doc(alias = "ges_track_element_set_track_type")]
    fn set_track_type(&self, type_: TrackType);

    //#[doc(alias = "control-binding-added")]
    //fn connect_control_binding_added<Unsupported or ignored types>(&self, f: F) -> SignalHandlerId;

    //#[doc(alias = "control-binding-removed")]
    //fn connect_control_binding_removed<Unsupported or ignored types>(&self, f: F) -> SignalHandlerId;

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

    #[cfg(any(feature = "v1_18", feature = "dox"))]
    #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_18")))]
    #[doc(alias = "auto-clamp-control-sources")]
    fn connect_auto_clamp_control_sources_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId;

    #[cfg(any(feature = "v1_18", feature = "dox"))]
    #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_18")))]
    #[doc(alias = "has-internal-source")]
    fn connect_has_internal_source_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;

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

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

impl<O: IsA<TrackElement>> TrackElementExt for O {
    fn add_children_props<P: IsA<gst::Element>>(
        &self,
        element: &P,
        wanted_categories: &[&str],
        blacklist: &[&str],
        whitelist: &[&str],
    ) {
        unsafe {
            ffi::ges_track_element_add_children_props(
                self.as_ref().to_glib_none().0,
                element.as_ref().to_glib_none().0,
                wanted_categories.to_glib_none().0,
                blacklist.to_glib_none().0,
                whitelist.to_glib_none().0,
            );
        }
    }

    #[cfg(any(feature = "v1_18", feature = "dox"))]
    #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_18")))]
    fn clamp_control_source(&self, property_name: &str) {
        unsafe {
            ffi::ges_track_element_clamp_control_source(
                self.as_ref().to_glib_none().0,
                property_name.to_glib_none().0,
            );
        }
    }

    fn edit(
        &self,
        layers: &[Layer],
        mode: EditMode,
        edge: Edge,
        position: u64,
    ) -> Result<(), glib::error::BoolError> {
        unsafe {
            glib::result_from_gboolean!(
                ffi::ges_track_element_edit(
                    self.as_ref().to_glib_none().0,
                    layers.to_glib_none().0,
                    mode.into_glib(),
                    edge.into_glib(),
                    position
                ),
                "Failed to edit"
            )
        }
    }

    //fn all_control_bindings(&self) -> /*Unknown conversion*//*Unimplemented*/HashTable TypeId { ns_id: 0, id: 28 }/TypeId { ns_id: 6, id: 83 } {
    //    unsafe { TODO: call ffi:ges_track_element_get_all_control_bindings() }
    //}

    #[cfg(any(feature = "v1_18", feature = "dox"))]
    #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_18")))]
    fn is_auto_clamp_control_sources(&self) -> bool {
        unsafe {
            from_glib(ffi::ges_track_element_get_auto_clamp_control_sources(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    //fn control_binding(&self, property_name: &str) -> /*Ignored*/Option<gst::ControlBinding> {
    //    unsafe { TODO: call ffi:ges_track_element_get_control_binding() }
    //}

    fn element(&self) -> Option<gst::Element> {
        unsafe {
            from_glib_none(ffi::ges_track_element_get_element(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn gnlobject(&self) -> Option<gst::Element> {
        unsafe {
            from_glib_none(ffi::ges_track_element_get_gnlobject(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn nleobject(&self) -> Option<gst::Element> {
        unsafe {
            from_glib_none(ffi::ges_track_element_get_nleobject(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn track(&self) -> Option<Track> {
        unsafe {
            from_glib_none(ffi::ges_track_element_get_track(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn track_type(&self) -> TrackType {
        unsafe {
            from_glib(ffi::ges_track_element_get_track_type(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    #[cfg(any(feature = "v1_18", feature = "dox"))]
    #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_18")))]
    fn has_internal_source(&self) -> bool {
        unsafe {
            from_glib(ffi::ges_track_element_has_internal_source(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

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

    #[cfg(any(feature = "v1_18", feature = "dox"))]
    #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_18")))]
    fn is_core(&self) -> bool {
        unsafe {
            from_glib(ffi::ges_track_element_is_core(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    //fn lookup_child(&self, prop_name: &str, pspec: /*Ignored*/glib::ParamSpec) -> Option<gst::Element> {
    //    unsafe { TODO: call ffi:ges_track_element_lookup_child() }
    //}

    fn remove_control_binding(&self, property_name: &str) -> Result<(), glib::error::BoolError> {
        unsafe {
            glib::result_from_gboolean!(
                ffi::ges_track_element_remove_control_binding(
                    self.as_ref().to_glib_none().0,
                    property_name.to_glib_none().0
                ),
                "Failed to remove control binding"
            )
        }
    }

    fn set_active(&self, active: bool) -> bool {
        unsafe {
            from_glib(ffi::ges_track_element_set_active(
                self.as_ref().to_glib_none().0,
                active.into_glib(),
            ))
        }
    }

    #[cfg(any(feature = "v1_18", feature = "dox"))]
    #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_18")))]
    fn set_auto_clamp_control_sources(&self, auto_clamp: bool) {
        unsafe {
            ffi::ges_track_element_set_auto_clamp_control_sources(
                self.as_ref().to_glib_none().0,
                auto_clamp.into_glib(),
            );
        }
    }

    //fn set_control_source(&self, source: /*Ignored*/&gst::ControlSource, property_name: &str, binding_type: &str) -> bool {
    //    unsafe { TODO: call ffi:ges_track_element_set_control_source() }
    //}

    #[cfg(any(feature = "v1_18", feature = "dox"))]
    #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_18")))]
    fn set_has_internal_source(&self, has_internal_source: bool) -> bool {
        unsafe {
            from_glib(ffi::ges_track_element_set_has_internal_source(
                self.as_ref().to_glib_none().0,
                has_internal_source.into_glib(),
            ))
        }
    }

    fn set_track_type(&self, type_: TrackType) {
        unsafe {
            ffi::ges_track_element_set_track_type(
                self.as_ref().to_glib_none().0,
                type_.into_glib(),
            );
        }
    }

    //#[doc(alias = "control-binding-added")]
    //fn connect_control_binding_added<Unsupported or ignored types>(&self, f: F) -> SignalHandlerId {
    //    Ignored control_binding: Gst.ControlBinding
    //}

    //#[doc(alias = "control-binding-removed")]
    //fn connect_control_binding_removed<Unsupported or ignored types>(&self, f: F) -> SignalHandlerId {
    //    Ignored control_binding: Gst.ControlBinding
    //}

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

    #[cfg(any(feature = "v1_18", feature = "dox"))]
    #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_18")))]
    #[doc(alias = "auto-clamp-control-sources")]
    fn connect_auto_clamp_control_sources_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn notify_auto_clamp_control_sources_trampoline<P, F: Fn(&P) + 'static>(
            this: *mut ffi::GESTrackElement,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) where
            P: IsA<TrackElement>,
        {
            let f: &F = &*(f as *const F);
            f(&TrackElement::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::auto-clamp-control-sources\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_auto_clamp_control_sources_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[cfg(any(feature = "v1_18", feature = "dox"))]
    #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_18")))]
    #[doc(alias = "has-internal-source")]
    fn connect_has_internal_source_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_has_internal_source_trampoline<P, F: Fn(&P) + 'static>(
            this: *mut ffi::GESTrackElement,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) where
            P: IsA<TrackElement>,
        {
            let f: &F = &*(f as *const F);
            f(&TrackElement::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::has-internal-source\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_has_internal_source_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

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

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