// Foundation for Sites by ZURB // foundation.zurb.com // Licensed under MIT Open Source
//// /// @group functions ////
/// Determine if a value is not falsey, in CSS terms. Falsey values are `null`, `none`, `0` with any unit, or an empty list. /// /// @param {Mixed} $val - Value to check. /// /// @returns {Boolean} `true` if `$val` is not falsey. @function has-value($val) {
@if $val == null or $val == none { @return false; } @if type-of($val) == 'number' and strip-unit($val) == 0 { @return false; } @if type-of($val) == 'list' and length($val) == 0 { @return false; } @return true;
}
/// Determine a top/right/bottom/right value on a padding, margin, etc. property, no matter how many values were passed in. Use this function if you need to know the specific side of a value, but don't know if the value is using a shorthand format. /// /// @param {List|Number} $val - Value to analyze. Should be a shorthand sizing property, e.g. “1em 2em 1em” /// @param {Keyword} $side - Side to return. Should be `top`, `right`, `bottom`, or `left`. /// /// @returns {Number} A single value based on `$val` and `$side`. @function get-side($val, $side) {
$length: length($val); @if $length == 1 { @return $val; } @if $length == 2 { @return map-get(( top: nth($val, 1), bottom: nth($val, 1), left: nth($val, 2), right: nth($val, 2), ), $side); } @if $length == 3 { @return map-get(( top: nth($val, 1), left: nth($val, 2), right: nth($val, 2), bottom: nth($val, 3), ), $side); } @if $length == 4 { @return map-get(( top: nth($val, 1), right: nth($val, 2), bottom: nth($val, 3), left: nth($val, 4), ), $side); }
}
/// Given border $val, find a specific element of the border, which is $elem. The possible values for $elem are width, style, and color. /// /// @param {List} $val - Border value to find a value in. /// @param {Keyword} $elem - Border component to extract. /// /// @returns {Mixed} If the value exists, returns the value. If the value is not in the border definition, the function will return a 0px width, solid style, or black border. @function get-border-value($val, $elem) {
// Find the width, style, or color and return it @each $v in $val { $type: type-of($v); @if $elem == width and $type == 'number' { @return $v; } @if $elem == style and $type == 'string' { @return $v; } @if $elem == color and $type == 'color' { @return $v; } } // Defaults $defaults: ( width: 0, style: solid, color: #000, ); @return map-get($defaults, $elem);
}
/// Finds a value in a nested map. /// @link css-tricks.com/snippets/sass/deep-getset-maps/ Deep Get/Set in Maps /// /// @param {Map} $map - Map to pull a value from. /// @param {String} $keys… - Keys to use when looking for a value. /// @returns {Mixed} The value found in the map. @function map-deep-get($map, $keys…) {
@each $key in $keys { $map: map-get($map, $key); } @return $map;
}