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// 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::Clock;
use crate::ClockType;
use crate::Object;
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::ToValue;
use std::boxed::Box as Box_;
use std::mem::transmute;

glib::wrapper! {
    /// The GStreamer core provides a GstSystemClock based on the system time.
    /// Asynchronous callbacks are scheduled from an internal thread.
    ///
    /// Clock implementors are encouraged to subclass this systemclock as it
    /// implements the async notification.
    ///
    /// Subclasses can however override all of the important methods for sync and
    /// async notifications to implement their own callback methods or blocking
    /// wait operations.
    ///
    /// # Implements
    ///
    /// [`SystemClockExt`][trait@crate::prelude::SystemClockExt], [`ClockExt`][trait@crate::prelude::ClockExt], [`GstObjectExt`][trait@crate::prelude::GstObjectExt], [`trait@glib::ObjectExt`], [`ClockExtManual`][trait@crate::prelude::ClockExtManual]
    #[doc(alias = "GstSystemClock")]
    pub struct SystemClock(Object<ffi::GstSystemClock, ffi::GstSystemClockClass>) @extends Clock, Object;

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

impl SystemClock {
    /// Get a handle to the default system clock. The refcount of the
    /// clock will be increased so you need to unref the clock after
    /// usage.
    ///
    /// # Returns
    ///
    /// the default clock.
    ///
    /// MT safe.
    #[doc(alias = "gst_system_clock_obtain")]
    pub fn obtain() -> Clock {
        assert_initialized_main_thread!();
        unsafe { from_glib_full(ffi::gst_system_clock_obtain()) }
    }

    /// Sets the default system clock that can be obtained with
    /// [`obtain()`][Self::obtain()].
    ///
    /// This is mostly used for testing and debugging purposes when you
    /// want to have control over the time reported by the default system
    /// clock.
    ///
    /// MT safe.
    /// ## `new_clock`
    /// a [`Clock`][crate::Clock]
    #[doc(alias = "gst_system_clock_set_default")]
    pub fn set_default<P: IsA<Clock>>(new_clock: Option<&P>) {
        assert_initialized_main_thread!();
        unsafe {
            ffi::gst_system_clock_set_default(new_clock.map(|p| p.as_ref()).to_glib_none().0);
        }
    }
}

unsafe impl Send for SystemClock {}
unsafe impl Sync for SystemClock {}

pub const NONE_SYSTEM_CLOCK: Option<&SystemClock> = None;

/// Trait containing all [`struct@SystemClock`] methods.
///
/// # Implementors
///
/// [`SystemClock`][struct@crate::SystemClock]
pub trait SystemClockExt: 'static {
    #[doc(alias = "clock-type")]
    fn clock_type(&self) -> ClockType;

    #[doc(alias = "clock-type")]
    fn set_clock_type(&self, clock_type: ClockType);

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

impl<O: IsA<SystemClock>> SystemClockExt for O {
    fn clock_type(&self) -> ClockType {
        unsafe {
            let mut value = glib::Value::from_type(<ClockType as StaticType>::static_type());
            glib::gobject_ffi::g_object_get_property(
                self.to_glib_none().0 as *mut glib::gobject_ffi::GObject,
                b"clock-type\0".as_ptr() as *const _,
                value.to_glib_none_mut().0,
            );
            value
                .get()
                .expect("Return Value for property `clock-type` getter")
        }
    }

    fn set_clock_type(&self, clock_type: ClockType) {
        unsafe {
            glib::gobject_ffi::g_object_set_property(
                self.to_glib_none().0 as *mut glib::gobject_ffi::GObject,
                b"clock-type\0".as_ptr() as *const _,
                clock_type.to_value().to_glib_none().0,
            );
        }
    }

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