// FontLoad
//
// Write font-family and fallback if `$fontload-js` is `true`
//
// $family    - value of final `font-family` property (with custom font at fist place)
// $weight    - weight of font (by default current `font-weight` or `normal`)
// $style     - style of font (by default current `font-style` or `normal`)
//
// Styleguide: Mixins.FontLoad
_fontload($family)
    if (!$fontload-js)
        font-family $family
    else
        $family-fallback = clone($family)
        $font = shift($family-fallback)

        $isCustom = false
        for key, val in $fontface
            $isCustom = $isCustom || (('' + val.family) == $font)

        if (!$isCustom)
            font-family $family
        else
            font-family $family-fallback

            .{$fontload-class} &
                font-family $family