// 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 ges_sys;
use glib;
use glib::object::Cast;
use glib::object::IsA;
use glib::signal::connect_raw;
use glib::signal::SignalHandlerId;
use glib::translate::*;
use glib::StaticType;
use glib::Value;
use glib_sys;
use gobject_sys;
use gst;
use std::boxed::Box as Box_;
use std::mem::transmute;
use Edge;
use EditMode;
use Extractable;
use Layer;
use TimelineElement;
use Track;
use TrackType;

glib_wrapper! {
    /// A `TrackElement` is a `TimelineElement` that specifically belongs
    /// to a single `Track` of its `TimelineElement:timeline`. Its
    /// `TimelineElement:start` and `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 `TrackElementExt::get_nleobject`, and its
    /// `TimelineElement:start`, `TimelineElement:duration`,
    /// `TimelineElement:in-point`, `TimelineElement:priority` and
    /// `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
    /// `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 `Effect`-s.
    ///
    /// ## Control Bindings for Children Properties
    ///
    /// You can set up control bindings for a track element child property
    /// using `TrackElementExt::set_control_source`. A
    /// `GstTimedValueControlSource` should specify the timed values using the
    /// internal source coordinates (see `TimelineElement`). By default,
    /// these will be updated to lie between the `TimelineElement:in-point`
    /// and out-point of the element. This can be switched off by setting
    /// `TrackElement:auto-clamp-control-sources` to `false`.
    ///
    /// # Implements
    ///
    /// [`TrackElementExt`](trait.TrackElementExt.html), [`TimelineElementExt`](trait.TimelineElementExt.html), [`glib::object::ObjectExt`](../glib/object/trait.ObjectExt.html), [`ExtractableExt`](trait.ExtractableExt.html), [`TimelineElementExtManual`](prelude/trait.TimelineElementExtManual.html)
    pub struct TrackElement(Object<ges_sys::GESTrackElement, ges_sys::GESTrackElementClass, TrackElementClass>) @extends TimelineElement, @implements Extractable;

    match fn {
        get_type => || ges_sys::ges_track_element_get_type(),
    }
}

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

/// Trait containing all `TrackElement` methods.
///
/// # Implementors
///
/// [`TrackElement`](struct.TrackElement.html)
pub trait TrackElementExt: 'static {
    /// Adds all the properties of a `gst::Element` that match the criteria as
    /// children properties of the track element. If the name of `element`'s
    /// `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
    /// `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
    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 `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
    /// `TrackElementExt::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.
    ///
    /// Feature: `v1_18`
    ///
    /// ## `property_name`
    /// The name of the child property to clamp the control
    /// source of
    #[cfg(any(feature = "v1_18", feature = "dox"))]
    fn clamp_control_source(&self, property_name: &str);

    /// Edits the element within its track.
    ///
    /// # Deprecated since 1.18
    ///
    /// use `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)]
    fn edit(
        &self,
        layers: &[Layer],
        mode: EditMode,
        edge: Edge,
        position: u64,
    ) -> Result<(), glib::error::BoolError>;

    //fn get_all_control_bindings(&self) -> /*Unknown conversion*//*Unimplemented*/HashTable TypeId { ns_id: 0, id: 28 }/TypeId { ns_id: 6, id: 83 };

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

    //fn get_control_binding(&self, property_name: &str) -> /*Ignored*/Option<gst::ControlBinding>;

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

    /// Get the GNonLin object this object is controlling.
    ///
    /// # Deprecated
    ///
    /// use `TrackElementExt::get_nleobject` instead.
    ///
    /// # Returns
    ///
    /// The GNonLin object this object is controlling.
    fn get_gnlobject(&self) -> Option<gst::Element>;

    /// Get the nleobject that this element wraps.
    ///
    /// # Returns
    ///
    /// The nleobject that `self` wraps.
    fn get_nleobject(&self) -> Option<gst::Element>;

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

    /// Gets the `TrackElement:track-type` for the element.
    ///
    /// # Returns
    ///
    /// The track-type of `self`.
    fn get_track_type(&self) -> TrackType;

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

    /// Gets `TrackElement:active` for the element.
    ///
    /// # Returns
    ///
    /// `true` if `self` is active in its track.
    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` `ClipClass` method for
    /// some `Clip`.
    ///
    /// Note that such a track element can only be added to a clip that shares
    /// the same `Asset` as the clip that created it. For example, you are
    /// allowed to move core children between clips that resulted from
    /// `GESContainerExt::ungroup`, but you could not move the core child from a
    /// `UriClip` to a `TitleClip` or another `UriClip` with a different
    /// `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.
    ///
    /// Feature: `v1_18`
    ///
    ///
    /// # Returns
    ///
    /// `true` if `element` is a core track element.
    #[cfg(any(feature = "v1_18", feature = "dox"))]
    fn is_core(&self) -> bool;

    //fn lookup_child(&self, prop_name: &str, pspec: /*Ignored*/glib::ParamSpec) -> Option<gst::Element>;

    /// Removes the `gst::ControlBinding` that was created for the specified child
    /// property of the track element using
    /// `TrackElementExt::set_control_source`. The given `property_name` must
    /// be the same name of the child property that was passed to
    /// `TrackElementExt::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.
    fn remove_control_binding(&self, property_name: &str) -> Result<(), glib::error::BoolError>;

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

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

    //fn set_control_source(&self, source: /*Ignored*/&gst::ControlSource, property_name: &str, binding_type: &str) -> bool;

    /// Sets `TrackElement:has-internal-source` for the element. If this is
    /// set to `false`, this method will also set the
    /// `TimelineElement:in-point` of the element to 0 and its
    /// `TimelineElement:max-duration` to `GST_CLOCK_TIME_NONE`.
    ///
    /// Feature: `v1_18`
    ///
    /// ## `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"))]
    fn set_has_internal_source(&self, has_internal_source: bool) -> bool;

    /// Sets the `TrackElement:track-type` for the element.
    /// ## `type_`
    /// The new track-type for `self`
    fn set_track_type(&self, type_: TrackType);

    /// Whether the effect of the element should be applied in its
    /// `TrackElement:track`. If set to `false`, it will not be used in
    /// the output of the track.
    fn get_property_active(&self) -> bool;

    /// This property is used to determine whether the 'internal time'
    /// properties of the element have any meaning. In particular, unless
    /// this is set to `true`, the `TimelineElement:in-point` and
    /// `TimelineElement:max-duration` can not be set to any value other
    /// than the default 0 and `GST_CLOCK_TIME_NONE`, respectively.
    ///
    /// If an element has some *internal* *timed* source `gst::Element` that it
    /// reads stream data from as part of its function in a `Track`, then
    /// you'll likely want to set this to `true` to allow the
    /// `TimelineElement:in-point` and `TimelineElement:max-duration` to
    /// be set.
    ///
    /// The default value is determined by the `TrackElementClass`
    /// `default_has_internal_source` class property. For most
    /// `SourceClass`-es, this will be `true`, with the exception of those
    /// that have a potentially *static* source, such as `ImageSourceClass`
    /// and `TitleSourceClass`. Otherwise, this will usually be `false`.
    ///
    /// For most `Operation`-s you will likely want to leave this set to
    /// `false`. The exception may be for an operation that reads some stream
    /// data from some private internal source as part of manipulating the
    /// input data from the usual linked upstream `TrackElement`.
    ///
    /// For example, you may want to set this to `true` for a
    /// `TrackType::Video` operation that wraps a `textoverlay` that reads
    /// from a subtitle file and places its text on top of the received video
    /// data. The `TimelineElement:in-point` of the element would be used
    /// to shift the initial seek time on the `textoverlay` away from 0, and
    /// the `TimelineElement:max-duration` could be set to reflect the
    /// time at which the subtitle file runs out of data.
    ///
    /// Note that GES can not support track elements that have both internal
    /// content and manipulate the timing of their data streams (time
    /// effects).
    ///
    /// Feature: `v1_18`
    ///
    #[cfg(any(feature = "v1_18", feature = "dox"))]
    fn get_property_has_internal_source(&self) -> bool;

    //fn connect_control_binding_added<Unsupported or ignored types>(&self, f: F) -> SignalHandlerId;

    //fn connect_control_binding_removed<Unsupported or ignored types>(&self, f: F) -> SignalHandlerId;

    fn connect_property_active_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;

    #[cfg(any(feature = "v1_18", feature = "dox"))]
    fn connect_property_auto_clamp_control_sources_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId;

    #[cfg(any(feature = "v1_18", feature = "dox"))]
    fn connect_property_has_internal_source_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId;

    fn connect_property_track_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;

    fn connect_property_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 {
            ges_sys::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"))]
    fn clamp_control_source(&self, property_name: &str) {
        unsafe {
            ges_sys::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!(
                ges_sys::ges_track_element_edit(
                    self.as_ref().to_glib_none().0,
                    layers.to_glib_none().0,
                    mode.to_glib(),
                    edge.to_glib(),
                    position
                ),
                "Failed to edit"
            )
        }
    }

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

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

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

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

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

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

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

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

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

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

    #[cfg(any(feature = "v1_18", feature = "dox"))]
    fn is_core(&self) -> bool {
        unsafe {
            from_glib(ges_sys::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 ges_sys:ges_track_element_lookup_child() }
    //}

    fn remove_control_binding(&self, property_name: &str) -> Result<(), glib::error::BoolError> {
        unsafe {
            glib_result_from_gboolean!(
                ges_sys::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(ges_sys::ges_track_element_set_active(
                self.as_ref().to_glib_none().0,
                active.to_glib(),
            ))
        }
    }

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

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

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

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

    fn get_property_active(&self) -> bool {
        unsafe {
            let mut value = Value::from_type(<bool as StaticType>::static_type());
            gobject_sys::g_object_get_property(
                self.to_glib_none().0 as *mut gobject_sys::GObject,
                b"active\0".as_ptr() as *const _,
                value.to_glib_none_mut().0,
            );
            value
                .get()
                .expect("Return Value for property `active` getter")
                .unwrap()
        }
    }

    #[cfg(any(feature = "v1_18", feature = "dox"))]
    fn get_property_has_internal_source(&self) -> bool {
        unsafe {
            let mut value = Value::from_type(<bool as StaticType>::static_type());
            gobject_sys::g_object_get_property(
                self.to_glib_none().0 as *mut gobject_sys::GObject,
                b"has-internal-source\0".as_ptr() as *const _,
                value.to_glib_none_mut().0,
            );
            value
                .get()
                .expect("Return Value for property `has-internal-source` getter")
                .unwrap()
        }
    }

    //fn connect_control_binding_added<Unsupported or ignored types>(&self, f: F) -> SignalHandlerId {
    //    Ignored control_binding: Gst.ControlBinding
    //}

    //fn connect_control_binding_removed<Unsupported or ignored types>(&self, f: F) -> SignalHandlerId {
    //    Ignored control_binding: Gst.ControlBinding
    //}

    fn connect_property_active_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_active_trampoline<P, F: Fn(&P) + 'static>(
            this: *mut ges_sys::GESTrackElement,
            _param_spec: glib_sys::gpointer,
            f: glib_sys::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"))]
    fn connect_property_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 ges_sys::GESTrackElement,
            _param_spec: glib_sys::gpointer,
            f: glib_sys::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"))]
    fn connect_property_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 ges_sys::GESTrackElement,
            _param_spec: glib_sys::gpointer,
            f: glib_sys::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),
            )
        }
    }

    fn connect_property_track_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_track_trampoline<P, F: Fn(&P) + 'static>(
            this: *mut ges_sys::GESTrackElement,
            _param_spec: glib_sys::gpointer,
            f: glib_sys::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),
            )
        }
    }

    fn connect_property_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 ges_sys::GESTrackElement,
            _param_spec: glib_sys::gpointer,
            f: glib_sys::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),
            )
        }
    }
}