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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)
// DO NOT EDIT

use glib;
use glib::object::IsA;
use glib::object::ObjectType as ObjectType_;
use glib::signal::connect_raw;
use glib::signal::SignalHandlerId;
use glib::translate::*;
use glib::GString;
use glib::StaticType;
use glib::Value;
use glib_sys;
use gobject_sys;
use gst_sys;
use std::boxed::Box as Box_;
use std::mem::transmute;
use Caps;
use Object;
use Pad;
use PadDirection;
use PadPresence;

glib_wrapper! {
    /// Padtemplates describe the possible media types a pad or an elementfactory can
    /// handle. This allows for both inspection of handled types before loading the
    /// element plugin as well as identifying pads on elements that are not yet
    /// created (request or sometimes pads).
    ///
    /// Pad and PadTemplates have `Caps` attached to it to describe the media type
    /// they are capable of dealing with. `PadTemplate::get_caps` or
    /// GST_PAD_TEMPLATE_CAPS() are used to get the caps of a padtemplate. It's not
    /// possible to modify the caps of a padtemplate after creation.
    ///
    /// PadTemplates have a `PadPresence` property which identifies the lifetime
    /// of the pad and that can be retrieved with GST_PAD_TEMPLATE_PRESENCE(). Also
    /// the direction of the pad can be retrieved from the `PadTemplate` with
    /// GST_PAD_TEMPLATE_DIRECTION().
    ///
    /// The GST_PAD_TEMPLATE_NAME_TEMPLATE () is important for GST_PAD_REQUEST pads
    /// because it has to be used as the name in the `ElementExt::get_request_pad`
    /// call to instantiate a pad from this template.
    ///
    /// Padtemplates can be created with `PadTemplate::new` or with
    /// gst_static_pad_template_get (), which creates a `PadTemplate` from a
    /// `StaticPadTemplate` that can be filled with the
    /// convenient GST_STATIC_PAD_TEMPLATE() macro.
    ///
    /// A padtemplate can be used to create a pad (see `Pad::new_from_template`
    /// or gst_pad_new_from_static_template ()) or to add to an element class
    /// (see gst_element_class_add_static_pad_template ()).
    ///
    /// The following code example shows the code to create a pad from a padtemplate.
    ///
    /// ```C
    ///   GstStaticPadTemplate my_template =
    ///   GST_STATIC_PAD_TEMPLATE (
    ///     "sink",          // the name of the pad
    ///     GST_PAD_SINK,    // the direction of the pad
    ///     GST_PAD_ALWAYS,  // when this pad will be present
    ///     GST_STATIC_CAPS (        // the capabilities of the padtemplate
    ///       "audio/x-raw, "
    ///         "channels = (int) [ 1, 6 ]"
    ///     )
    ///   );
    ///   void
    ///   my_method (void)
    ///   {
    ///     GstPad *pad;
    ///     pad = gst_pad_new_from_static_template (&my_template, "sink");
    ///     ...
    ///   }
    /// ```
    ///
    /// The following example shows you how to add the padtemplate to an
    /// element class, this is usually done in the class_init of the class:
    ///
    /// ```C
    ///   static void
    ///   my_element_class_init (GstMyElementClass *klass)
    ///   {
    ///     GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
    ///
    ///     gst_element_class_add_static_pad_template (gstelement_class, &my_template);
    ///   }
    /// ```
    ///
    /// # Implements
    ///
    /// [`GstObjectExt`](trait.GstObjectExt.html), [`glib::object::ObjectExt`](../glib/object/trait.ObjectExt.html)
    pub struct PadTemplate(Object<gst_sys::GstPadTemplate, gst_sys::GstPadTemplateClass, PadTemplateClass>) @extends Object;

    match fn {
        get_type => || gst_sys::gst_pad_template_get_type(),
    }
}

impl PadTemplate {
    /// Creates a new pad template with a name according to the given template
    /// and with the given arguments.
    /// ## `name_template`
    /// the name template.
    /// ## `direction`
    /// the `PadDirection` of the template.
    /// ## `presence`
    /// the `PadPresence` of the pad.
    /// ## `caps`
    /// a `Caps` set for the template.
    ///
    /// # Returns
    ///
    /// a new `PadTemplate`.
    pub fn new(
        name_template: &str,
        direction: PadDirection,
        presence: PadPresence,
        caps: &Caps,
    ) -> Result<PadTemplate, glib::BoolError> {
        assert_initialized_main_thread!();
        unsafe {
            Option::<_>::from_glib_none(gst_sys::gst_pad_template_new(
                name_template.to_glib_none().0,
                direction.to_glib(),
                presence.to_glib(),
                caps.to_glib_none().0,
            ))
            .ok_or_else(|| glib_bool_error!("Failed to create pad template"))
        }
    }

    /// Creates a new pad template with a name according to the given template
    /// and with the given arguments.
    ///
    /// Feature: `v1_14`
    ///
    /// ## `name_template`
    /// the name template.
    /// ## `direction`
    /// the `PadDirection` of the template.
    /// ## `presence`
    /// the `PadPresence` of the pad.
    /// ## `caps`
    /// a `Caps` set for the template.
    /// ## `pad_type`
    /// The `glib::Type` of the pad to create
    ///
    /// # Returns
    ///
    /// a new `PadTemplate`.
    #[cfg(any(feature = "v1_14", feature = "dox"))]
    pub fn new_with_gtype(
        name_template: &str,
        direction: PadDirection,
        presence: PadPresence,
        caps: &Caps,
        pad_type: glib::types::Type,
    ) -> Result<PadTemplate, glib::BoolError> {
        assert_initialized_main_thread!();
        unsafe {
            Option::<_>::from_glib_none(gst_sys::gst_pad_template_new_with_gtype(
                name_template.to_glib_none().0,
                direction.to_glib(),
                presence.to_glib(),
                caps.to_glib_none().0,
                pad_type.to_glib(),
            ))
            .ok_or_else(|| glib_bool_error!("Failed to create pad template"))
        }
    }

    /// Gets the capabilities of the pad template.
    ///
    /// # Returns
    ///
    /// the `Caps` of the pad template.
    /// Unref after usage.
    pub fn get_caps(&self) -> Option<Caps> {
        unsafe { from_glib_full(gst_sys::gst_pad_template_get_caps(self.to_glib_none().0)) }
    }

    /// Emit the pad-created signal for this template when created by this pad.
    /// ## `pad`
    /// the `Pad` that created it
    pub fn pad_created<P: IsA<Pad>>(&self, pad: &P) {
        unsafe {
            gst_sys::gst_pad_template_pad_created(
                self.to_glib_none().0,
                pad.as_ref().to_glib_none().0,
            );
        }
    }

    /// The direction of the pad described by the pad template.
    pub fn get_property_direction(&self) -> PadDirection {
        unsafe {
            let mut value = Value::from_type(<PadDirection as StaticType>::static_type());
            gobject_sys::g_object_get_property(
                self.as_ptr() as *mut gobject_sys::GObject,
                b"direction\0".as_ptr() as *const _,
                value.to_glib_none_mut().0,
            );
            value
                .get()
                .expect("Return Value for property `direction` getter")
                .unwrap()
        }
    }

    /// The type of the pad described by the pad template.
    ///
    /// Feature: `v1_14`
    ///
    #[cfg(any(feature = "v1_14", feature = "dox"))]
    pub fn get_property_gtype(&self) -> glib::types::Type {
        unsafe {
            let mut value = Value::from_type(<glib::types::Type as StaticType>::static_type());
            gobject_sys::g_object_get_property(
                self.as_ptr() as *mut gobject_sys::GObject,
                b"gtype\0".as_ptr() as *const _,
                value.to_glib_none_mut().0,
            );
            value
                .get()
                .expect("Return Value for property `gtype` getter")
                .unwrap()
        }
    }

    /// The name template of the pad template.
    pub fn get_property_name_template(&self) -> Option<GString> {
        unsafe {
            let mut value = Value::from_type(<GString as StaticType>::static_type());
            gobject_sys::g_object_get_property(
                self.as_ptr() as *mut gobject_sys::GObject,
                b"name-template\0".as_ptr() as *const _,
                value.to_glib_none_mut().0,
            );
            value
                .get()
                .expect("Return Value for property `name-template` getter")
        }
    }

    /// When the pad described by the pad template will become available.
    pub fn get_property_presence(&self) -> PadPresence {
        unsafe {
            let mut value = Value::from_type(<PadPresence as StaticType>::static_type());
            gobject_sys::g_object_get_property(
                self.as_ptr() as *mut gobject_sys::GObject,
                b"presence\0".as_ptr() as *const _,
                value.to_glib_none_mut().0,
            );
            value
                .get()
                .expect("Return Value for property `presence` getter")
                .unwrap()
        }
    }

    /// This signal is fired when an element creates a pad from this template.
    /// ## `pad`
    /// the pad that was created.
    pub fn connect_pad_created<F: Fn(&PadTemplate, &Pad) + Send + Sync + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn pad_created_trampoline<
            F: Fn(&PadTemplate, &Pad) + Send + Sync + 'static,
        >(
            this: *mut gst_sys::GstPadTemplate,
            pad: *mut gst_sys::GstPad,
            f: glib_sys::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this), &from_glib_borrow(pad))
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"pad-created\0".as_ptr() as *const _,
                Some(transmute(pad_created_trampoline::<F> as usize)),
                Box_::into_raw(f),
            )
        }
    }
}

unsafe impl Send for PadTemplate {}
unsafe impl Sync for PadTemplate {}