// 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::Asset;
use crate::Timeline;
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;
use std::ptr;

glib::wrapper! {
    /// The [`crate::Project`] is used to control a set of [`crate::Asset`] and is a
    /// [`crate::Asset`] with `GES_TYPE_TIMELINE` as `extractable_type` itself. That
    /// means that you can extract [`crate::Timeline`] from a project as followed:
    ///
    ///
    /// ```text
    ///  GESProject *project;
    ///  GESTimeline *timeline;
    ///
    ///  project = ges_project_new ("file:///path/to/a/valid/project/uri");
    ///
    ///  // Here you can connect to the various signal to get more infos about
    ///  // what is happening and recover from errors if possible
    ///  ...
    ///
    ///  timeline = ges_asset_extract (GES_ASSET (project));
    /// ```
    ///
    /// The [`crate::Project`] class offers a higher level API to handle [`crate::Asset`]-s.
    /// It lets you request new asset, and it informs you about new assets through
    /// a set of signals. Also it handles problem such as missing files/missing
    /// [`crate::gst::Element`] and lets you try to recover from those.
    ///
    /// ## Subprojects
    ///
    /// In order to add a subproject, the only thing to do is to add the subproject
    /// to the main project:
    ///
    /// ``` c
    /// ges_project_add_asset (project, GES_ASSET (subproject));
    /// ```
    /// then the subproject will be serialized in the project files. To use
    /// the subproject in a timeline, you should use a [`crate::UriClip`] with the
    /// same subproject URI.
    ///
    /// When loading a project with subproject, subprojects URIs will be temporary
    /// writable local files. If you want to edit the subproject timeline,
    /// you should retrieve the subproject from the parent project asset list and
    /// extract the timeline with [`crate::prelude::AssetExt::extract()`] and save it at
    /// the same temporary location.
    ///
    /// # Implements
    ///
    /// [`trait@crate::prelude::ProjectExt`], [`trait@crate::prelude::AssetExt`], [`trait@glib::object::ObjectExt`]
    pub struct Project(Object<ffi::GESProject, ffi::GESProjectClass>) @extends Asset;

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

impl Project {
    /// Creates a new [`crate::Project`] and sets its uri to `uri` if provided. Note that
    /// if `uri` is not valid or [`None`], the uri of the project will then be set
    /// the first time you save the project. If you then save the project to
    /// other locations, it will never be updated again and the first valid URI is
    /// the URI it will keep refering to.
    /// ## `uri`
    /// The uri to be set after creating the project.
    ///
    /// # Returns
    ///
    /// A newly created [`crate::Project`]
    #[doc(alias = "ges_project_new")]
    pub fn new(uri: Option<&str>) -> Project {
        assert_initialized_main_thread!();
        unsafe { from_glib_full(ffi::ges_project_new(uri.to_glib_none().0)) }
    }
}

pub const NONE_PROJECT: Option<&Project> = None;

/// Trait containing all `Project` methods.
///
/// # Implementors
///
/// [`struct@crate::Project`]
pub trait ProjectExt: 'static {
    /// Adds a [`crate::Asset`] to `self`, the project will keep a reference on
    /// `asset`.
    /// ## `asset`
    /// A [`crate::Asset`] to add to `self`
    ///
    /// # Returns
    ///
    /// [`true`] if the asset could be added [`false`] it was already
    /// in the project
    #[doc(alias = "ges_project_add_asset")]
    fn add_asset<P: IsA<Asset>>(&self, asset: &P) -> bool;

    /// Adds `profile` to the project. It lets you save in what format
    /// the project has been renders and keep a reference to those formats.
    /// Also, those formats will be saves to the project file when possible.
    /// ## `profile`
    /// A [`crate::gst_pbutils::EncodingProfile`] to add to the project. If a profile with
    /// the same name already exists, it will be replaced
    ///
    /// # Returns
    ///
    /// [`true`] if `profile` could be added, [`false`] otherwize
    #[doc(alias = "ges_project_add_encoding_profile")]
    fn add_encoding_profile<P: IsA<gst_pbutils::EncodingProfile>>(
        &self,
        profile: &P,
    ) -> Result<(), glib::error::BoolError>;

    //#[cfg(any(feature = "v1_18", feature = "dox"))]
    //#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_18")))]
    //#[doc(alias = "ges_project_add_formatter")]
    //fn add_formatter(&self, formatter: /*Ignored*/&Formatter);

    /// Create and add a [`crate::Asset`] to `self`. You should connect to the
    /// "asset-added" signal to get the asset when it finally gets added to
    /// `self`
    /// ## `id`
    /// The id of the asset to create and add to `self`
    /// ## `extractable_type`
    /// The [`crate::glib::Type`] of the asset to create
    ///
    /// # Returns
    ///
    /// [`true`] if the asset started to be added [`false`] it was already
    /// in the project
    #[doc(alias = "ges_project_create_asset")]
    fn create_asset(&self, id: Option<&str>, extractable_type: glib::types::Type) -> bool;

    /// Create and add a [`crate::Asset`] to `self`. You should connect to the
    /// "asset-added" signal to get the asset when it finally gets added to
    /// `self`
    /// ## `id`
    /// The id of the asset to create and add to `self`
    /// ## `extractable_type`
    /// The [`crate::glib::Type`] of the asset to create
    ///
    /// # Returns
    ///
    /// The newly created [`crate::Asset`] or [`None`].
    #[doc(alias = "ges_project_create_asset_sync")]
    fn create_asset_sync(
        &self,
        id: Option<&str>,
        extractable_type: glib::types::Type,
    ) -> Result<Option<Asset>, glib::Error>;

    /// ## `id`
    /// The id of the asset to retrieve
    /// ## `extractable_type`
    /// The extractable_type of the asset
    /// to retrieve from `object`
    ///
    /// # Returns
    ///
    /// The [`crate::Asset`] with
    /// `id` or [`None`] if no asset with `id` as an ID
    #[doc(alias = "ges_project_get_asset")]
    #[doc(alias = "get_asset")]
    fn asset(&self, id: &str, extractable_type: glib::types::Type) -> Option<Asset>;

    /// Get the assets that are being loaded
    ///
    /// # Returns
    ///
    /// A set of loading asset
    /// that will be added to `self`. Note that those Asset are *not* loaded yet,
    /// and thus can not be used
    #[doc(alias = "ges_project_get_loading_assets")]
    #[doc(alias = "get_loading_assets")]
    fn loading_assets(&self) -> Vec<Asset>;

    /// Retrieve the uri that is currently set on `self`
    ///
    /// # Returns
    ///
    /// a newly allocated string representing uri.
    #[doc(alias = "ges_project_get_uri")]
    #[doc(alias = "get_uri")]
    fn uri(&self) -> Option<glib::GString>;

    /// List all `asset` contained in `self` filtering per extractable_type
    /// as defined by `filter`. It copies the asset and thus will not be updated
    /// in time.
    /// ## `filter`
    /// Type of assets to list, `GES_TYPE_EXTRACTABLE` will list
    /// all assets
    ///
    /// # Returns
    ///
    /// The list of
    /// [`crate::Asset`] the object contains
    #[doc(alias = "ges_project_list_assets")]
    fn list_assets(&self, filter: glib::types::Type) -> Vec<Asset>;

    /// Lists the encoding profile that have been set to `self`. The first one
    /// is the latest added.
    ///
    /// # Returns
    ///
    /// The
    /// list of [`crate::gst_pbutils::EncodingProfile`] used in `self`
    #[doc(alias = "ges_project_list_encoding_profiles")]
    fn list_encoding_profiles(&self) -> Vec<gst_pbutils::EncodingProfile>;

    /// Loads `self` into `timeline`
    /// ## `timeline`
    /// A blank timeline to load `self` into
    ///
    /// # Returns
    ///
    /// [`true`] if the project could be loaded [`false`] otherwize.
    #[doc(alias = "ges_project_load")]
    fn load<P: IsA<Timeline>>(&self, timeline: &P) -> Result<(), glib::Error>;

    /// remove a `asset` to from `self`.
    /// ## `asset`
    /// A [`crate::Asset`] to remove from `self`
    ///
    /// # Returns
    ///
    /// [`true`] if the asset could be removed [`false`] otherwise
    #[doc(alias = "ges_project_remove_asset")]
    fn remove_asset<P: IsA<Asset>>(&self, asset: &P) -> Result<(), glib::error::BoolError>;

    /// Save the timeline of `self` to `uri`. You should make sure that `timeline`
    /// is one of the timelines that have been extracted from `self`
    /// (using ges_asset_extract (`self`);)
    /// ## `timeline`
    /// The [`crate::Timeline`] to save, it must have been extracted from `self`
    /// ## `uri`
    /// The uri where to save `self` and `timeline`
    /// ## `formatter_asset`
    /// The formatter asset to
    /// use or [`None`]. If [`None`], will try to save in the same format as the one
    /// from which the timeline as been loaded or default to the best formatter
    /// as defined in `ges_find_formatter_for_uri`
    /// ## `overwrite`
    /// [`true`] to overwrite file if it exists
    ///
    /// # Returns
    ///
    /// [`true`] if the project could be save, [`false`] otherwize
    #[doc(alias = "ges_project_save")]
    fn save<P: IsA<Timeline>, Q: IsA<Asset>>(
        &self,
        timeline: &P,
        uri: &str,
        formatter_asset: Option<&Q>,
        overwrite: bool,
    ) -> Result<(), glib::Error>;

    /// ## `asset`
    /// The [`crate::Asset`] that has been added to `project`
    #[doc(alias = "asset-added")]
    fn connect_asset_added<F: Fn(&Self, &Asset) + 'static>(&self, f: F) -> SignalHandlerId;

    /// ## `asset`
    /// The [`crate::Asset`] that started loading
    #[doc(alias = "asset-loading")]
    fn connect_asset_loading<F: Fn(&Self, &Asset) + 'static>(&self, f: F) -> SignalHandlerId;

    /// ## `asset`
    /// The [`crate::Asset`] that has been removed from `project`
    #[doc(alias = "asset-removed")]
    fn connect_asset_removed<F: Fn(&Self, &Asset) + 'static>(&self, f: F) -> SignalHandlerId;

    /// ## `timeline`
    /// The timeline that failed loading
    /// ## `error`
    /// The [`crate::glib::Error`] defining the error that occured
    #[cfg(any(feature = "v1_18", feature = "dox"))]
    #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_18")))]
    #[doc(alias = "error-loading")]
    fn connect_error_loading<F: Fn(&Self, &Timeline, &glib::Error) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId;

    /// Informs you that a [`crate::Asset`] could not be created. In case of
    /// missing GStreamer plugins, the error will be set to `GST_CORE_ERROR`
    /// [`crate::gst::CoreError::MissingPlugin`]
    /// ## `error`
    /// The [`crate::glib::Error`] defining the error that occured, might be [`None`]
    /// ## `id`
    /// The `id` of the asset that failed loading
    /// ## `extractable_type`
    /// The `extractable_type` of the asset that
    /// failed loading
    #[doc(alias = "error-loading-asset")]
    fn connect_error_loading_asset<F: Fn(&Self, &glib::Error, &str, glib::types::Type) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId;

    /// ## `timeline`
    /// The [`crate::Timeline`] that completed loading
    #[doc(alias = "loaded")]
    fn connect_loaded<F: Fn(&Self, &Timeline) + 'static>(&self, f: F) -> SignalHandlerId;

    /// ## `timeline`
    /// The [`crate::Timeline`] that started loading
    #[cfg(any(feature = "v1_18", feature = "dox"))]
    #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_18")))]
    #[doc(alias = "loading")]
    fn connect_loading<F: Fn(&Self, &Timeline) + 'static>(&self, f: F) -> SignalHandlerId;

    ///
    /// ```text
    /// static gchar
    /// source_moved_cb (GESProject *project, GError *error, GESAsset *asset_with_error)
    /// {
    ///   return g_strdup ("file:///the/new/uri.ogg");
    /// }
    ///
    /// static int
    /// main (int argc, gchar ** argv)
    /// {
    ///   GESTimeline *timeline;
    ///   GESProject *project = ges_project_new ("file:///some/uri.xges");
    ///
    ///   g_signal_connect (project, "missing-uri", source_moved_cb, NULL);
    ///   timeline = ges_asset_extract (GES_ASSET (project));
    /// }
    /// ```
    /// ## `error`
    /// The error that happened
    /// ## `wrong_asset`
    /// The asset with the wrong ID, you should us it and its content
    /// only to find out what the new location is.
    ///
    /// # Returns
    ///
    /// The new URI of `wrong_asset`
    #[doc(alias = "missing-uri")]
    fn connect_missing_uri<F: Fn(&Self, &glib::Error, &Asset) -> Option<glib::GString> + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId;
}

impl<O: IsA<Project>> ProjectExt for O {
    fn add_asset<P: IsA<Asset>>(&self, asset: &P) -> bool {
        unsafe {
            from_glib(ffi::ges_project_add_asset(
                self.as_ref().to_glib_none().0,
                asset.as_ref().to_glib_none().0,
            ))
        }
    }

    fn add_encoding_profile<P: IsA<gst_pbutils::EncodingProfile>>(
        &self,
        profile: &P,
    ) -> Result<(), glib::error::BoolError> {
        unsafe {
            glib::result_from_gboolean!(
                ffi::ges_project_add_encoding_profile(
                    self.as_ref().to_glib_none().0,
                    profile.as_ref().to_glib_none().0
                ),
                "Failed to add profile"
            )
        }
    }

    //#[cfg(any(feature = "v1_18", feature = "dox"))]
    //#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_18")))]
    //fn add_formatter(&self, formatter: /*Ignored*/&Formatter) {
    //    unsafe { TODO: call ffi:ges_project_add_formatter() }
    //}

    fn create_asset(&self, id: Option<&str>, extractable_type: glib::types::Type) -> bool {
        unsafe {
            from_glib(ffi::ges_project_create_asset(
                self.as_ref().to_glib_none().0,
                id.to_glib_none().0,
                extractable_type.into_glib(),
            ))
        }
    }

    fn create_asset_sync(
        &self,
        id: Option<&str>,
        extractable_type: glib::types::Type,
    ) -> Result<Option<Asset>, glib::Error> {
        unsafe {
            let mut error = ptr::null_mut();
            let ret = ffi::ges_project_create_asset_sync(
                self.as_ref().to_glib_none().0,
                id.to_glib_none().0,
                extractable_type.into_glib(),
                &mut error,
            );
            if error.is_null() {
                Ok(from_glib_full(ret))
            } else {
                Err(from_glib_full(error))
            }
        }
    }

    fn asset(&self, id: &str, extractable_type: glib::types::Type) -> Option<Asset> {
        unsafe {
            from_glib_full(ffi::ges_project_get_asset(
                self.as_ref().to_glib_none().0,
                id.to_glib_none().0,
                extractable_type.into_glib(),
            ))
        }
    }

    fn loading_assets(&self) -> Vec<Asset> {
        unsafe {
            FromGlibPtrContainer::from_glib_full(ffi::ges_project_get_loading_assets(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn uri(&self) -> Option<glib::GString> {
        unsafe { from_glib_full(ffi::ges_project_get_uri(self.as_ref().to_glib_none().0)) }
    }

    fn list_assets(&self, filter: glib::types::Type) -> Vec<Asset> {
        unsafe {
            FromGlibPtrContainer::from_glib_full(ffi::ges_project_list_assets(
                self.as_ref().to_glib_none().0,
                filter.into_glib(),
            ))
        }
    }

    fn list_encoding_profiles(&self) -> Vec<gst_pbutils::EncodingProfile> {
        unsafe {
            FromGlibPtrContainer::from_glib_none(ffi::ges_project_list_encoding_profiles(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn load<P: IsA<Timeline>>(&self, timeline: &P) -> Result<(), glib::Error> {
        unsafe {
            let mut error = ptr::null_mut();
            let _ = ffi::ges_project_load(
                self.as_ref().to_glib_none().0,
                timeline.as_ref().to_glib_none().0,
                &mut error,
            );
            if error.is_null() {
                Ok(())
            } else {
                Err(from_glib_full(error))
            }
        }
    }

    fn remove_asset<P: IsA<Asset>>(&self, asset: &P) -> Result<(), glib::error::BoolError> {
        unsafe {
            glib::result_from_gboolean!(
                ffi::ges_project_remove_asset(
                    self.as_ref().to_glib_none().0,
                    asset.as_ref().to_glib_none().0
                ),
                "Failed to remove asset"
            )
        }
    }

    fn save<P: IsA<Timeline>, Q: IsA<Asset>>(
        &self,
        timeline: &P,
        uri: &str,
        formatter_asset: Option<&Q>,
        overwrite: bool,
    ) -> Result<(), glib::Error> {
        unsafe {
            let mut error = ptr::null_mut();
            let _ = ffi::ges_project_save(
                self.as_ref().to_glib_none().0,
                timeline.as_ref().to_glib_none().0,
                uri.to_glib_none().0,
                formatter_asset.map(|p| p.as_ref()).to_glib_full(),
                overwrite.into_glib(),
                &mut error,
            );
            if error.is_null() {
                Ok(())
            } else {
                Err(from_glib_full(error))
            }
        }
    }

    #[doc(alias = "asset-added")]
    fn connect_asset_added<F: Fn(&Self, &Asset) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn asset_added_trampoline<P, F: Fn(&P, &Asset) + 'static>(
            this: *mut ffi::GESProject,
            asset: *mut ffi::GESAsset,
            f: glib::ffi::gpointer,
        ) where
            P: IsA<Project>,
        {
            let f: &F = &*(f as *const F);
            f(
                &Project::from_glib_borrow(this).unsafe_cast_ref(),
                &from_glib_borrow(asset),
            )
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"asset-added\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    asset_added_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "asset-loading")]
    fn connect_asset_loading<F: Fn(&Self, &Asset) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn asset_loading_trampoline<P, F: Fn(&P, &Asset) + 'static>(
            this: *mut ffi::GESProject,
            asset: *mut ffi::GESAsset,
            f: glib::ffi::gpointer,
        ) where
            P: IsA<Project>,
        {
            let f: &F = &*(f as *const F);
            f(
                &Project::from_glib_borrow(this).unsafe_cast_ref(),
                &from_glib_borrow(asset),
            )
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"asset-loading\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    asset_loading_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "asset-removed")]
    fn connect_asset_removed<F: Fn(&Self, &Asset) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn asset_removed_trampoline<P, F: Fn(&P, &Asset) + 'static>(
            this: *mut ffi::GESProject,
            asset: *mut ffi::GESAsset,
            f: glib::ffi::gpointer,
        ) where
            P: IsA<Project>,
        {
            let f: &F = &*(f as *const F);
            f(
                &Project::from_glib_borrow(this).unsafe_cast_ref(),
                &from_glib_borrow(asset),
            )
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"asset-removed\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    asset_removed_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 = "error-loading")]
    fn connect_error_loading<F: Fn(&Self, &Timeline, &glib::Error) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn error_loading_trampoline<
            P,
            F: Fn(&P, &Timeline, &glib::Error) + 'static,
        >(
            this: *mut ffi::GESProject,
            timeline: *mut ffi::GESTimeline,
            error: *mut glib::ffi::GError,
            f: glib::ffi::gpointer,
        ) where
            P: IsA<Project>,
        {
            let f: &F = &*(f as *const F);
            f(
                &Project::from_glib_borrow(this).unsafe_cast_ref(),
                &from_glib_borrow(timeline),
                &from_glib_borrow(error),
            )
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"error-loading\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    error_loading_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "error-loading-asset")]
    fn connect_error_loading_asset<
        F: Fn(&Self, &glib::Error, &str, glib::types::Type) + 'static,
    >(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn error_loading_asset_trampoline<
            P,
            F: Fn(&P, &glib::Error, &str, glib::types::Type) + 'static,
        >(
            this: *mut ffi::GESProject,
            error: *mut glib::ffi::GError,
            id: *mut libc::c_char,
            extractable_type: glib::ffi::GType,
            f: glib::ffi::gpointer,
        ) where
            P: IsA<Project>,
        {
            let f: &F = &*(f as *const F);
            f(
                &Project::from_glib_borrow(this).unsafe_cast_ref(),
                &from_glib_borrow(error),
                &glib::GString::from_glib_borrow(id),
                from_glib(extractable_type),
            )
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"error-loading-asset\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    error_loading_asset_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "loaded")]
    fn connect_loaded<F: Fn(&Self, &Timeline) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn loaded_trampoline<P, F: Fn(&P, &Timeline) + 'static>(
            this: *mut ffi::GESProject,
            timeline: *mut ffi::GESTimeline,
            f: glib::ffi::gpointer,
        ) where
            P: IsA<Project>,
        {
            let f: &F = &*(f as *const F);
            f(
                &Project::from_glib_borrow(this).unsafe_cast_ref(),
                &from_glib_borrow(timeline),
            )
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"loaded\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    loaded_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 = "loading")]
    fn connect_loading<F: Fn(&Self, &Timeline) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn loading_trampoline<P, F: Fn(&P, &Timeline) + 'static>(
            this: *mut ffi::GESProject,
            timeline: *mut ffi::GESTimeline,
            f: glib::ffi::gpointer,
        ) where
            P: IsA<Project>,
        {
            let f: &F = &*(f as *const F);
            f(
                &Project::from_glib_borrow(this).unsafe_cast_ref(),
                &from_glib_borrow(timeline),
            )
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"loading\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    loading_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "missing-uri")]
    fn connect_missing_uri<
        F: Fn(&Self, &glib::Error, &Asset) -> Option<glib::GString> + 'static,
    >(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn missing_uri_trampoline<
            P,
            F: Fn(&P, &glib::Error, &Asset) -> Option<glib::GString> + 'static,
        >(
            this: *mut ffi::GESProject,
            error: *mut glib::ffi::GError,
            wrong_asset: *mut ffi::GESAsset,
            f: glib::ffi::gpointer,
        ) -> *mut libc::c_char
        where
            P: IsA<Project>,
        {
            let f: &F = &*(f as *const F);
            f(
                &Project::from_glib_borrow(this).unsafe_cast_ref(),
                &from_glib_borrow(error),
                &from_glib_borrow(wrong_asset),
            )
            .to_glib_full()
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"missing-uri\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    missing_uri_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }
}