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97 lines
2.6 KiB
97 lines
2.6 KiB
7 years ago
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@charset "UTF-8";
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/// Directional-property mixins are shorthands for writing properties like the following
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///
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/// @ignore You can also use `false` instead of `null`.
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///
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/// @param {List} $vals
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/// List of directional values
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///
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/// @example scss - Usage
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/// .element {
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/// @include border-style(dotted null);
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/// @include margin(null 0 10px);
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/// }
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///
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/// @example css - CSS Output
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/// .element {
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/// border-bottom-style: dotted;
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/// border-top-style: dotted;
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/// margin-bottom: 10px;
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/// margin-left: 0;
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/// margin-right: 0;
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/// }
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///
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/// @require {function} contains-falsy
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///
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/// @return {List}
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@function collapse-directionals($vals) {
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$output: null;
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$a: nth($vals, 1);
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$b: if(length($vals) < 2, $a, nth($vals, 2));
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$c: if(length($vals) < 3, $a, nth($vals, 3));
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$d: if(length($vals) < 2, $a, nth($vals, if(length($vals) < 4, 2, 4)));
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@if $a == 0 { $a: 0; }
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@if $b == 0 { $b: 0; }
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@if $c == 0 { $c: 0; }
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@if $d == 0 { $d: 0; }
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@if $a == $b and $a == $c and $a == $d { $output: $a; }
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@else if $a == $c and $b == $d { $output: $a $b; }
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@else if $b == $d { $output: $a $b $c; }
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@else { $output: $a $b $c $d; }
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@return $output;
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}
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/// Output directional properties, for instance `margin`.
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///
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/// @access private
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///
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/// @param {String} $pre
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/// Prefix to use
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/// @param {String} $suf
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/// Suffix to use
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/// @param {List} $vals
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/// List of values
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///
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/// @require {function} collapse-directionals
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/// @require {function} contains-falsy
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@mixin directional-property($pre, $suf, $vals) {
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// Property Names
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$top: $pre + "-top" + if($suf, "-#{$suf}", "");
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$bottom: $pre + "-bottom" + if($suf, "-#{$suf}", "");
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$left: $pre + "-left" + if($suf, "-#{$suf}", "");
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$right: $pre + "-right" + if($suf, "-#{$suf}", "");
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$all: $pre + if($suf, "-#{$suf}", "");
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$vals: collapse-directionals($vals);
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@if contains-falsy($vals) {
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@if nth($vals, 1) { #{$top}: nth($vals, 1); }
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@if length($vals) == 1 {
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@if nth($vals, 1) { #{$right}: nth($vals, 1); }
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} @else {
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@if nth($vals, 2) { #{$right}: nth($vals, 2); }
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}
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@if length($vals) == 2 {
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@if nth($vals, 1) { #{$bottom}: nth($vals, 1); }
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@if nth($vals, 2) { #{$left}: nth($vals, 2); }
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} @else if length($vals) == 3 {
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@if nth($vals, 3) { #{$bottom}: nth($vals, 3); }
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@if nth($vals, 2) { #{$left}: nth($vals, 2); }
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} @else if length($vals) == 4 {
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@if nth($vals, 3) { #{$bottom}: nth($vals, 3); }
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@if nth($vals, 4) { #{$left}: nth($vals, 4); }
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}
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} @else {
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#{$all}: $vals;
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}
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}
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