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//
// DO NOT EDIT.  THIS FILE IS GENERATED FROM ../../../dist/idl/nsIThreadRetargetableStreamListener.idl
//


/// `interface nsIThreadRetargetableStreamListener : nsISupports`
///

/// ```text
/// /**
///  * nsIThreadRetargetableStreamListener
///  *
///  * To be used by classes which implement nsIStreamListener and whose
///  * OnDataAvailable callback may be retargeted for delivery off the main thread.
///  */
/// ```
///

// The actual type definition for the interface. This struct has methods
// declared on it which will call through its vtable. You never want to pass
// this type around by value, always pass it behind a reference.

#[repr(C)]
pub struct nsIThreadRetargetableStreamListener {
    vtable: *const nsIThreadRetargetableStreamListenerVTable,

    /// This field is a phantomdata to ensure that the VTable type and any
    /// struct containing it is not safe to send across threads, as XPCOM is
    /// generally not threadsafe.
    ///
    /// XPCOM interfaces in general are not safe to send across threads.
    __nosync: ::std::marker::PhantomData<::std::rc::Rc<u8>>,
}

// Implementing XpCom for an interface exposes its IID, which allows for easy
// use of the `.query_interface<T>` helper method. This also defines that
// method for nsIThreadRetargetableStreamListener.
unsafe impl XpCom for nsIThreadRetargetableStreamListener {
    const IID: nsIID = nsID(0xfb2304b8, 0xf82f, 0x4433,
        [0xaf, 0x68, 0xd8, 0x74, 0xa2, 0xeb, 0xbd, 0xc1]);
}

// We need to implement the RefCounted trait so we can be used with `RefPtr`.
// This trait teaches `RefPtr` how to manage our memory.
unsafe impl RefCounted for nsIThreadRetargetableStreamListener {
    #[inline]
    unsafe fn addref(&self) {
        self.AddRef();
    }
    #[inline]
    unsafe fn release(&self) {
        self.Release();
    }
}

// This trait is implemented on all types which can be coerced to from nsIThreadRetargetableStreamListener.
// It is used in the implementation of `fn coerce<T>`. We hide it from the
// documentation, because it clutters it up a lot.
#[doc(hidden)]
pub trait nsIThreadRetargetableStreamListenerCoerce {
    /// Cheaply cast a value of this type from a `nsIThreadRetargetableStreamListener`.
    fn coerce_from(v: &nsIThreadRetargetableStreamListener) -> &Self;
}

// The trivial implementation: We can obviously coerce ourselves to ourselves.
impl nsIThreadRetargetableStreamListenerCoerce for nsIThreadRetargetableStreamListener {
    #[inline]
    fn coerce_from(v: &nsIThreadRetargetableStreamListener) -> &Self {
        v
    }
}

impl nsIThreadRetargetableStreamListener {
    /// Cast this `nsIThreadRetargetableStreamListener` to one of its base interfaces.
    #[inline]
    pub fn coerce<T: nsIThreadRetargetableStreamListenerCoerce>(&self) -> &T {
        T::coerce_from(self)
    }
}

// Every interface struct type implements `Deref` to its base interface. This
// causes methods on the base interfaces to be directly avaliable on the
// object. For example, you can call `.AddRef` or `.QueryInterface` directly
// on any interface which inherits from `nsISupports`.
impl ::std::ops::Deref for nsIThreadRetargetableStreamListener {
    type Target = nsISupports;
    #[inline]
    fn deref(&self) -> &nsISupports {
        unsafe {
            ::std::mem::transmute(self)
        }
    }
}

// Ensure we can use .coerce() to cast to our base types as well. Any type which
// our base interface can coerce from should be coercable from us as well.
impl<T: nsISupportsCoerce> nsIThreadRetargetableStreamListenerCoerce for T {
    #[inline]
    fn coerce_from(v: &nsIThreadRetargetableStreamListener) -> &Self {
        T::coerce_from(v)
    }
}

// This struct represents the interface's VTable. A pointer to a statically
// allocated version of this struct is at the beginning of every nsIThreadRetargetableStreamListener
// object. It contains one pointer field for each method in the interface. In
// the case where we can't generate a binding for a method, we include a void
// pointer.
#[doc(hidden)]
#[repr(C)]
pub struct nsIThreadRetargetableStreamListenerVTable {
    /// We need to include the members from the base interface's vtable at the start
    /// of the VTable definition.
    pub __base: nsISupportsVTable,

    /* void checkListenerChain (); */
    pub CheckListenerChain: unsafe extern "system" fn (this: *const nsIThreadRetargetableStreamListener) -> nsresult,
}


// The implementations of the function wrappers which are exposed to rust code.
// Call these methods rather than manually calling through the VTable struct.
impl nsIThreadRetargetableStreamListener {

    /// ```text
    /// /**
    ///    * Checks this listener and any next listeners it may have to verify that
    ///    * they can receive OnDataAvailable off the main thread. It is the
    ///    * responsibility of the implementing class to decide on the criteria to
    ///    * determine if retargeted delivery of these methods is possible, but it must
    ///    * check any and all nsIStreamListener objects that might be called in the
    ///    * listener chain.
    ///    *
    ///    * An exception should be thrown if a listener in the chain does not
    ///    * support retargeted delivery, i.e. if the next listener does not implement
    ///    * nsIThreadRetargetableStreamListener, or a call to its checkListenerChain()
    ///    * fails.
    ///    */
    /// ```
    ///

    /// `void checkListenerChain ();`
    #[inline]
    pub unsafe fn CheckListenerChain(&self, ) -> nsresult {
        ((*self.vtable).CheckListenerChain)(self, )
    }


}