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use ffi;
use cairo;
use gdk;
use gdk_pixbuf;
use gio;
use glib::object::IsA;
use glib::translate::*;
use Widget;


pub trait DragContextExtManual {
    fn drag_finish(&self, success: bool, del: bool, time_: u32);

    #[cfg(feature = "v3_16")]
    fn drag_cancel(&self);

    fn drag_get_source_widget(&self) -> Option<Widget>;

    fn drag_set_icon_default(&self);

    fn drag_set_icon_gicon<P: IsA<gio::Icon>>(&self, icon: &P, hot_x: i32, hot_y: i32);

    fn drag_set_icon_name(&self, icon_name: &str, hot_x: i32, hot_y: i32);

    fn drag_set_icon_pixbuf(&self, pixbuf: &gdk_pixbuf::Pixbuf, hot_x: i32, hot_y: i32);

    fn drag_set_icon_stock(&self, stock_id: &str, hot_x: i32, hot_y: i32);

    fn drag_set_icon_surface(&self, surface: &cairo::Surface);

    fn drag_set_icon_widget<P: IsA<Widget>>(&self, widget: &P, hot_x: i32, hot_y: i32);
}

impl<O: IsA<gdk::DragContext>> DragContextExtManual for O {
    fn drag_finish(&self, success: bool, del: bool, time_: u32) {
        unsafe { ffi::gtk_drag_finish(self.to_glib_none().0,
                                      success as i32,
                                      del as i32,
                                      time_) };
    }

    #[cfg(feature = "v3_16")]
    fn drag_cancel(&self) {
        assert_initialized_main_thread!();
        unsafe {
            ffi::gtk_drag_cancel(self.to_glib_none().0);
        }
    }

    fn drag_get_source_widget(&self) -> Option<Widget> {
        assert_initialized_main_thread!();
        unsafe {
            from_glib_none(ffi::gtk_drag_get_source_widget(self.to_glib_none().0))
        }
    }

    fn drag_set_icon_default(&self) {
        assert_initialized_main_thread!();
        unsafe {
            ffi::gtk_drag_set_icon_default(self.to_glib_none().0);
        }
    }

    fn drag_set_icon_gicon<P: IsA<gio::Icon>>(&self, icon: &P, hot_x: i32, hot_y: i32) {
        assert_initialized_main_thread!();
        unsafe {
            ffi::gtk_drag_set_icon_gicon(self.to_glib_none().0, icon.to_glib_none().0, hot_x, hot_y);
        }
    }

    fn drag_set_icon_name(&self, icon_name: &str, hot_x: i32, hot_y: i32) {
        assert_initialized_main_thread!();
        unsafe {
            ffi::gtk_drag_set_icon_name(self.to_glib_none().0, icon_name.to_glib_none().0, hot_x, hot_y);
        }
    }

    fn drag_set_icon_pixbuf(&self, pixbuf: &gdk_pixbuf::Pixbuf, hot_x: i32, hot_y: i32) {
        assert_initialized_main_thread!();
        unsafe {
            ffi::gtk_drag_set_icon_pixbuf(self.to_glib_none().0, pixbuf.to_glib_none().0, hot_x, hot_y);
        }
    }

    fn drag_set_icon_stock(&self, stock_id: &str, hot_x: i32, hot_y: i32) {
        assert_initialized_main_thread!();
        unsafe {
            ffi::gtk_drag_set_icon_stock(self.to_glib_none().0, stock_id.to_glib_none().0, hot_x, hot_y);
        }
    }

    fn drag_set_icon_surface(&self, surface: &cairo::Surface) {
        assert_initialized_main_thread!();
        unsafe {
            ffi::gtk_drag_set_icon_surface(self.to_glib_none().0, mut_override(surface.to_glib_none().0));
        }
    }

    fn drag_set_icon_widget<P: IsA<Widget>>(&self, widget: &P, hot_x: i32, hot_y: i32) {
        assert_initialized_main_thread!();
        unsafe {
            ffi::gtk_drag_set_icon_widget(self.to_glib_none().0, widget.to_glib_none().0, hot_x, hot_y);
        }
    }
}