@import shared
@import ../utilities/general/hacks
@import ../functions

// Background property support for vendor prefixing within values.
=background($background-1, $background-2: false, $background-3: false, $background-4: false, $background-5: false, $background-6: false, $background-7: false, $background-8: false, $background-9: false, $background-10: false)
  $backgrounds: compact($background-1, $background-2, $background-3, $background-4, $background-5, $background-6, $background-7, $background-8, $background-9, $background-10)
  $mult-bgs: -compass-list-size($backgrounds) > 1
  $add-pie-bg: prefixed(-pie, $backgrounds) or $mult-bgs
  @if $experimental-support-for-svg and prefixed(-svg, $backgrounds)
    background: -svg($backgrounds)
  @if $support-for-original-webkit-gradients and prefixed(-owg, $backgrounds)
    background: -owg($backgrounds)
  @if $experimental-support-for-webkit and prefixed(-webkit, $backgrounds)
    background: -webkit($backgrounds)
  @if $experimental-support-for-mozilla and prefixed(-moz, $backgrounds)
    background: -moz($backgrounds)
  @if $experimental-support-for-opera and prefixed(-o, $backgrounds)
    background: -o($backgrounds)
  @if $experimental-support-for-pie and $add-pie-bg
    -pie-background: -pie($backgrounds)
  background: $backgrounds

=background-with-css2-fallback($background-1, $background-2: false, $background-3: false, $background-4: false, $background-5: false, $background-6: false, $background-7: false, $background-8: false, $background-9: false, $background-10: false)
  $backgrounds: compact($background-1, $background-2, $background-3, $background-4, $background-5, $background-6, $background-7, $background-8, $background-9, $background-10)
  $mult-bgs: -compass-list-size($backgrounds) > 1
  $simple-background: if($mult-bgs or prefixed(-css2, $backgrounds), -css2(-compass-nth($backgrounds, last)), false)
  @if not blank($simple-background)
    background: $simple-background
  +background($background-1, $background-2, $background-3, $background-4, $background-5, $background-6, $background-7, $background-8, $background-9, $background-10)

// Background image property support for vendor prefixing within values.
=background-image($image-1, $image-2: false, $image-3: false, $image-4: false, $image-5: false, $image-6: false, $image-7: false, $image-8: false, $image-9: false, $image-10: false)
  $images: compact($image-1, $image-2, $image-3, $image-4, $image-5, $image-6, $image-7, $image-8, $image-9, $image-10)
  $add-pie-bg: prefixed(-pie, $images) or -compass-list-size($images) > 1
  @if $experimental-support-for-svg and prefixed(-svg, $images)
    background-image: -svg($images)
    background-size: 100%
  @if $support-for-original-webkit-gradients and prefixed(-owg, $images)
    background-image: -owg($images)
  @if $experimental-support-for-webkit and prefixed(-webkit, $images)
    background-image: -webkit($images)
  @if $experimental-support-for-mozilla and prefixed(-moz, $images)
    background-image: -moz($images)
  @if $experimental-support-for-opera and prefixed(-o, $images)
    background-image: -o($images)
  @if $experimental-support-for-pie and $add-pie-bg
    @warn "PIE does not support background-image. Use @include background(#{$images}) instead."
  background-image: $images

// Emit a IE-Specific filters that renders a simple linear gradient.
// For use in IE 6 - 8. Best practice would have you apply this via a
// conditional IE stylesheet, but if you must, you should place this before
// any background-image properties that you have specified.
//
// For the `$orientation` parameter, you can pass `vertical` or `horizontal`.
=filter-gradient($start-color, $end-color, $orientation: vertical)
  +has-layout
  $gradient-type: if($orientation == vertical, 0, 1)
  @if $legacy-support-for-ie6 or $legacy-support-for-ie7 or $legacy-support-for-ie8
    filter: progid:DXImageTransform.Microsoft.gradient(gradientType=#{$gradient-type}, startColorstr='#{ie-hex-str($start-color)}', endColorstr='#{ie-hex-str($end-color)}')

// Border image property support for vendor prefixing properties and values.
=border-image($value)
  @if $experimental-support-for-mozilla
    -moz-border-image: -moz(reject(-compass-list($value), fill))
  @if $support-for-original-webkit-gradients
    -webkit-border-image: -owg(reject(-compass-list($value), fill))
  @if $experimental-support-for-webkit
    -webkit-border-image: -webkit(reject(-compass-list($value), fill))
  @if $experimental-support-for-opera
    -o-border-image: -o(reject(-compass-list($value), fill))
  @if $experimental-support-for-svg
    border-image: -svg(reject(-compass-list($value), fill))
  border-image: $value

// List style image property support for vendor prefixing within values.
=list-style-image($image)
  @if $experimental-support-for-mozilla and prefixed(-moz, $image)
    list-style-image: -moz($image)
  @if $support-for-original-webkit-gradients and prefixed(-owg, $image)
    list-style-image: -owg($image)
  @if $experimental-support-for-webkit and prefixed(-webkit, $image)
    list-style-image: -webkit($image)
  @if $experimental-support-for-opera and prefixed(-o, $image)
    list-style-image: -o($image)
  @if $experimental-support-for-svg and prefixed(-svg, $image)
    list-style-image: -svg($image)
  list-style-image: $image

// List style property support for vendor prefixing within values.
=list-style($value)
  $value: -compass-list($value)
  @if $experimental-support-for-mozilla and prefixed(-moz, $value)
    list-style-image: -moz($value)
  @if $support-for-original-webkit-gradients and prefixed(-owg, $value)
    list-style-image: -owg($value)
  @if $experimental-support-for-webkit and prefixed(-webkit, $value)
    list-style-image: -webkit($value)
  @if $experimental-support-for-opera and prefixed(-o, $value)
    list-style-image: -o($value)
  @if $experimental-support-for-svg and prefixed(-svg, $value)
    list-style-image: -svg($value)
  list-style-image: $value

// content property support for vendor prefixing within values.
=content($value)
  $value: -compass-list($value)
  @if $experimental-support-for-mozilla and prefixed(-moz, $value)
    content: -moz($value)
  @if $support-for-original-webkit-gradients and prefixed(-owg, $value)
    content: -owg($value)
  @if $experimental-support-for-webkit and prefixed(-webkit, $value)
    content: -webkit($value)
  @if $experimental-support-for-opera and prefixed(-o, $value)
    content: -o($value)
  @if $experimental-support-for-svg and prefixed(-svg, $value)
    content: -svg($value)
  content: $value
