// 
// A partial implementation of the Ruby cross browser support functions from Compass:
// https://github.com/Compass/compass/blob/stable/lib/compass/sass_extensions/functions/cross_browser_support.rb
// 

@function prefixed($prefix, $property1, $property2:null, $property3:null, $property4:null, $property5:null, $property6:null, $property7:null, $property8:null, $property9:null) {
  $properties: $property1, $property2, $property3, $property4, $property5, $property6, $property7, $property8, $property9;
  $prefixed: false;
  @each $item in $properties {
    @if type-of($item) == 'string' {
      $prefixed: $prefixed or str-index($item, 'url') != 1 and str-index($item, 'rgb') != 1 and str-index($item, '#') != 1;
    } @elseif type-of($item) == 'color' {
    } @elseif $item != null {
      $prefixed: true;
    }
  }
  @return $prefixed;
}

@function prefix($prefix, $property1, $property2:null, $property3:null, $property4:null, $property5:null, $property6:null, $property7:null, $property8:null, $property9:null) {
  $properties: "";

  // Support for polymorphism.
  @if type-of($property1) == 'list' {
    // Passing a single array of properties.
    $properties: $property1;
  } @else {
    // Passing multiple properties.
    $properties: $property1, $property2, $property3, $property4, $property5, $property6, $property7, $property8, $property9;
  }

  $props: false;
  @each $item in $properties {
    @if $item == null {}
    @else {
      @if prefixed($prefix, $item) {
        $item: #{$prefix}-#{$item};
      }
      @if $props {
        $props: $props, $item;
      }
      @else {
        $props: $item;
      }
    }
  }
  @return $props;
}

@function -svg($property1, $property2:null, $property3:null, $property4:null, $property5:null, $property6:null, $property7:null, $property8:null, $property9:null) {
  @return prefix('-svg', $property1, $property2, $property3, $property4, $property5, $property6, $property7, $property8, $property9);
}

@function -owg($property1, $property2:null, $property3:null, $property4:null, $property5:null, $property6:null, $property7:null, $property8:null, $property9:null) {
  @return prefix('-owg', $property1, $property2, $property3, $property4, $property5, $property6, $property7, $property8, $property9);
}

@function -webkit($property1, $property2:null, $property3:null, $property4:null, $property5:null, $property6:null, $property7:null, $property8:null, $property9:null) {
  @return prefix('-webkit', $property1, $property2, $property3, $property4, $property5, $property6, $property7, $property8, $property9);
}

@function -moz($property1, $property2:null, $property3:null, $property4:null, $property5:null, $property6:null, $property7:null, $property8:null, $property9:null) {
  @return prefix('-moz', $property1, $property2, $property3, $property4, $property5, $property6, $property7, $property8, $property9);
}

@function -o($property1, $property2:null, $property3:null, $property4:null, $property5:null, $property6:null, $property7:null, $property8:null, $property9:null) {
  @return prefix('-o', $property1, $property2, $property3, $property4, $property5, $property6, $property7, $property8, $property9);
}

@function -pie($property1, $property2:null, $property3:null, $property4:null, $property5:null, $property6:null, $property7:null, $property8:null, $property9:null) {
  @return prefix('-pie', $property1, $property2, $property3, $property4, $property5, $property6, $property7, $property8, $property9);
}