| <!DOCTYPE html> |
| <html> |
| <head> |
| <title>CSS Mixins: The @contents rule</title> |
| <link rel="help" href="https://drafts.csswg.org/css-mixins-1/#contents-rule"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| </head> |
| <body> |
| |
| <style> |
| @mixin --m1(@contents) { |
| @contents; |
| } |
| #e1 { |
| color: red; |
| @apply --m1 { color: green; } |
| } |
| </style> |
| <div id="e1">This text should be green.</div> |
| <script> |
| test(() => { |
| let target = document.getElementById('e1'); |
| assert_equals(getComputedStyle(target).color, 'rgb(0, 128, 0)'); |
| }, 'Simple @contents with no fallback'); |
| </script> |
| |
| |
| <style> |
| @mixin --m2(@contents) { |
| @contents |
| } |
| #e2 { |
| color: red; |
| @apply --m2 { color: green; } |
| } |
| </style> |
| <div id="e2">This text should be green.</div> |
| <script> |
| test(() => { |
| let target = document.getElementById('e2'); |
| assert_equals(getComputedStyle(target).color, 'rgb(0, 128, 0)'); |
| }, 'Implicit semicolon after @contents, at end of block'); |
| </script> |
| |
| |
| <style> |
| @mixin --m3(@contents) { |
| &.a { |
| @contents { color: blue; } |
| } |
| } |
| .b { |
| color: red; |
| @apply --m3 { color: green; } |
| } |
| </style> |
| <div class="a b" id="e3">This text should be green.</div> |
| <script> |
| test(() => { |
| let target = document.getElementById('e3'); |
| assert_equals(getComputedStyle(target).color, 'rgb(0, 128, 0)'); |
| }, 'Block in @apply overrides fallback'); |
| </script> |
| |
| |
| <style> |
| @mixin --m4(@contents) { |
| &.c { |
| @contents { color: green; } |
| } |
| } |
| .d { |
| color: red; |
| @apply --m4; |
| } |
| </style> |
| <div class="c d" id="e4">This text should be green.</div> |
| <script> |
| test(() => { |
| let target = document.getElementById('e4'); |
| assert_equals(getComputedStyle(target).color, 'rgb(0, 128, 0)'); |
| }, 'Fallback is used if @apply has no block'); |
| </script> |
| |
| |
| <style> |
| @mixin --m5() { |
| @contents { color: red !important; } |
| color: green; |
| } |
| #e5 { |
| @apply --m5 { color: red !important; } |
| } |
| </style> |
| <div id="e5">This text should be green.</div> |
| <script> |
| test(() => { |
| let target = document.getElementById('e5'); |
| assert_equals(getComputedStyle(target).color, 'rgb(0, 128, 0)'); |
| }, '@contents is ignored if there is no @contents parameter'); |
| </script> |
| |
| |
| <style> |
| @mixin --m6(@contents) { |
| @contents { } |
| color: green; |
| } |
| #e6 { |
| @apply --m6; |
| } |
| </style> |
| <div id="e6">This text should be green.</div> |
| <script> |
| test(() => { |
| let target = document.getElementById('e6'); |
| assert_equals(getComputedStyle(target).color, 'rgb(0, 128, 0)'); |
| }, 'Empty @contents block is allowed, but does nothing'); |
| </script> |
| |
| |
| <style> |
| @mixin --m7(@contents) { |
| @contents; |
| color: green; |
| } |
| #e7 { |
| @apply --m7 {}; |
| } |
| </style> |
| <div id="e7">This text should be green.</div> |
| <script> |
| test(() => { |
| let target = document.getElementById('e7'); |
| assert_equals(getComputedStyle(target).color, 'rgb(0, 128, 0)'); |
| }, 'Empty @contents parameter does not crash'); |
| </script> |
| </body> |
| </html> |
