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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::translate::*;
use glib::GString;
use gst_sys;
use Object;
use Plugin;

glib_wrapper! {
    /// This is a base class for anything that can be added to a `Plugin`.
    ///
    /// # Implements
    ///
    /// [`PluginFeatureExt`](trait.PluginFeatureExt.html), [`GstObjectExt`](trait.GstObjectExt.html), [`glib::object::ObjectExt`](../glib/object/trait.ObjectExt.html)
    pub struct PluginFeature(Object<gst_sys::GstPluginFeature, gst_sys::GstPluginFeatureClass, PluginFeatureClass>) @extends Object;

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

unsafe impl Send for PluginFeature {}
unsafe impl Sync for PluginFeature {}

pub const NONE_PLUGIN_FEATURE: Option<&PluginFeature> = None;

/// Trait containing all `PluginFeature` methods.
///
/// # Implementors
///
/// [`DeviceProviderFactory`](struct.DeviceProviderFactory.html), [`ElementFactory`](struct.ElementFactory.html), [`PluginFeature`](struct.PluginFeature.html), [`TypeFindFactory`](struct.TypeFindFactory.html)
pub trait PluginFeatureExt: 'static {
    /// Checks whether the given plugin feature is at least
    ///  the required version
    /// ## `min_major`
    /// minimum required major version
    /// ## `min_minor`
    /// minimum required minor version
    /// ## `min_micro`
    /// minimum required micro version
    ///
    /// # Returns
    ///
    /// `true` if the plugin feature has at least
    ///  the required version, otherwise `false`.
    fn check_version(&self, min_major: u32, min_minor: u32, min_micro: u32) -> bool;

    /// Get the plugin that provides this feature.
    ///
    /// # Returns
    ///
    /// the plugin that provides this
    ///  feature, or `None`. Unref with `GstObjectExt::unref` when no
    ///  longer needed.
    fn get_plugin(&self) -> Option<Plugin>;

    /// Get the name of the plugin that provides this feature.
    ///
    /// # Returns
    ///
    /// the name of the plugin that provides this
    ///  feature, or `None` if the feature is not associated with a
    ///  plugin.
    fn get_plugin_name(&self) -> Option<GString>;

    /// Loads the plugin containing `self` if it's not already loaded. `self` is
    /// unaffected; use the return value instead.
    ///
    /// Normally this function is used like this:
    ///
    /// ```C
    /// GstPluginFeature *loaded_feature;
    ///
    /// loaded_feature = gst_plugin_feature_load (feature);
    /// // presumably, we're no longer interested in the potentially-unloaded feature
    /// gst_object_unref (feature);
    /// feature = loaded_feature;
    /// ```
    ///
    /// # Returns
    ///
    /// a reference to the loaded
    /// feature, or `None` on error
    fn load(&self) -> Result<PluginFeature, glib::BoolError>;
}

impl<O: IsA<PluginFeature>> PluginFeatureExt for O {
    fn check_version(&self, min_major: u32, min_minor: u32, min_micro: u32) -> bool {
        unsafe {
            from_glib(gst_sys::gst_plugin_feature_check_version(
                self.as_ref().to_glib_none().0,
                min_major,
                min_minor,
                min_micro,
            ))
        }
    }

    fn get_plugin(&self) -> Option<Plugin> {
        unsafe {
            from_glib_full(gst_sys::gst_plugin_feature_get_plugin(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn get_plugin_name(&self) -> Option<GString> {
        unsafe {
            from_glib_none(gst_sys::gst_plugin_feature_get_plugin_name(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn load(&self) -> Result<PluginFeature, glib::BoolError> {
        unsafe {
            Option::<_>::from_glib_full(gst_sys::gst_plugin_feature_load(
                self.as_ref().to_glib_none().0,
            ))
            .ok_or_else(|| glib_bool_error!("Failed to load plugin feature"))
        }
    }
}