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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 gio_sys;
use glib;
use glib::object::Cast;
use glib::object::IsA;
use glib::signal::connect_raw;
use glib::signal::SignalHandlerId;
use glib::translate::*;
use glib_sys;
use std::boxed::Box as Box_;
use std::fmt;
use std::mem::transmute;
use OutputStream;
use PollableOutputStream;
use Seekable;

glib_wrapper! {
    /// `MemoryOutputStream` is a class for using arbitrary
    /// memory chunks as output for GIO streaming output operations.
    ///
    /// As of GLib 2.34, `MemoryOutputStream` trivially implements
    /// `PollableOutputStream`: it always polls as ready.
    ///
    /// # Implements
    ///
    /// [`MemoryOutputStreamExt`](trait.MemoryOutputStreamExt.html), [`OutputStreamExt`](trait.OutputStreamExt.html), [`glib::object::ObjectExt`](../glib/object/trait.ObjectExt.html), [`PollableOutputStreamExt`](trait.PollableOutputStreamExt.html), [`SeekableExt`](trait.SeekableExt.html), [`OutputStreamExtManual`](prelude/trait.OutputStreamExtManual.html), [`PollableOutputStreamExtManual`](prelude/trait.PollableOutputStreamExtManual.html)
    pub struct MemoryOutputStream(Object<gio_sys::GMemoryOutputStream, gio_sys::GMemoryOutputStreamClass, MemoryOutputStreamClass>) @extends OutputStream, @implements PollableOutputStream, Seekable;

    match fn {
        get_type => || gio_sys::g_memory_output_stream_get_type(),
    }
}

impl MemoryOutputStream {
    /// Creates a new `MemoryOutputStream`, using `g_realloc` and `g_free`
    /// for memory allocation.
    pub fn new_resizable() -> MemoryOutputStream {
        unsafe {
            OutputStream::from_glib_full(gio_sys::g_memory_output_stream_new_resizable())
                .unsafe_cast()
        }
    }
}

pub const NONE_MEMORY_OUTPUT_STREAM: Option<&MemoryOutputStream> = None;

/// Trait containing all `MemoryOutputStream` methods.
///
/// # Implementors
///
/// [`MemoryOutputStream`](struct.MemoryOutputStream.html)
pub trait MemoryOutputStreamExt: 'static {
    /// Returns the number of bytes from the start up to including the last
    /// byte written in the stream that has not been truncated away.
    ///
    /// # Returns
    ///
    /// the number of bytes written to the stream
    fn get_data_size(&self) -> usize;

    /// Returns data from the `self` as a `glib::Bytes`. `self` must be
    /// closed before calling this function.
    ///
    /// # Returns
    ///
    /// the stream's data
    fn steal_as_bytes(&self) -> Option<glib::Bytes>;

    fn connect_property_data_size_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;
}

impl<O: IsA<MemoryOutputStream>> MemoryOutputStreamExt for O {
    fn get_data_size(&self) -> usize {
        unsafe { gio_sys::g_memory_output_stream_get_data_size(self.as_ref().to_glib_none().0) }
    }

    fn steal_as_bytes(&self) -> Option<glib::Bytes> {
        unsafe {
            from_glib_full(gio_sys::g_memory_output_stream_steal_as_bytes(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn connect_property_data_size_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_data_size_trampoline<P, F: Fn(&P) + 'static>(
            this: *mut gio_sys::GMemoryOutputStream,
            _param_spec: glib_sys::gpointer,
            f: glib_sys::gpointer,
        ) where
            P: IsA<MemoryOutputStream>,
        {
            let f: &F = &*(f as *const F);
            f(&MemoryOutputStream::from_glib_borrow(this).unsafe_cast())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::data-size\0".as_ptr() as *const _,
                Some(transmute(notify_data_size_trampoline::<Self, F> as usize)),
                Box_::into_raw(f),
            )
        }
    }
}

impl fmt::Display for MemoryOutputStream {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        write!(f, "MemoryOutputStream")
    }
}