| <!DOCTYPE HTML> |
| <link rel="help" href="https://drafts.css-houdini.org/css-properties-values-api/#dom-css-registerproperty" /> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| |
| <style> |
| #inner { |
| --length: 10px; |
| --color: red; |
| } |
| #outer { |
| --length: 77px; |
| --color: blue; |
| } |
| </style> |
| |
| <div id=outer> |
| <div id=inner></div> |
| </div> |
| |
| <script> |
| var computedStyle = getComputedStyle(inner); |
| var inlineStyle = inner.style; |
| var sheetStyle = document.styleSheets[0].cssRules[0].style; |
| |
| test(function() { |
| // Nothing registered yet, whatever you specify works |
| assert_equals(computedStyle.getPropertyValue('--length'), ' 10px'); |
| assert_equals(computedStyle.getPropertyValue('--color'), ' red'); |
| |
| inlineStyle.setProperty('--length', '5'); |
| inlineStyle.setProperty('--color', 'hello'); |
| |
| assert_equals(inlineStyle.getPropertyValue('--length'), '5'); |
| assert_equals(inlineStyle.getPropertyValue('--color'), 'hello'); |
| assert_equals(computedStyle.getPropertyValue('--length'), '5'); |
| assert_equals(computedStyle.getPropertyValue('--color'), 'hello'); |
| }, "CSSOM setters function as expected for unregistered properties"); |
| |
| test(function() { |
| CSS.registerProperty({name: '--length', syntax: '<length>', initialValue: '0px', inherits: false}); |
| CSS.registerProperty({name: '--color', syntax: '<color>', initialValue: 'white', inherits: true}); |
| }, "CSS.registerProperty"); |
| |
| test(function() { |
| assert_equals(inlineStyle.getPropertyValue('--length'), '5'); |
| assert_equals(inlineStyle.getPropertyValue('--color'), 'hello'); |
| assert_equals(computedStyle.getPropertyValue('--length'), '0px'); |
| assert_equals(computedStyle.getPropertyValue('--color'), 'rgb(0, 0, 255)'); |
| }, "Formerly valid values are still readable from inline styles but are computed as the unset value"); |
| |
| test(function() { |
| inlineStyle.setProperty('--length', 'hi'); |
| inlineStyle.setProperty('--color', '20'); |
| assert_equals(inlineStyle.getPropertyValue('--length'), '5'); |
| assert_equals(inlineStyle.getPropertyValue('--color'), 'hello'); |
| }, "Values not matching the registered type can't be set"); |
| |
| test(function() { |
| inlineStyle.removeProperty('--length'); |
| inlineStyle.setProperty('--color', ''); |
| assert_equals(inlineStyle.getPropertyValue('--length'), ''); |
| assert_equals(inlineStyle.getPropertyValue('--color'), ''); |
| assert_equals(computedStyle.getPropertyValue('--length'), '10px'); |
| assert_equals(computedStyle.getPropertyValue('--color'), 'rgb(255, 0, 0)'); |
| }, "Values can be removed from inline styles"); |
| |
| test(function() { |
| sheetStyle.setProperty('--length', 'banana'); // Invalid, no change |
| assert_equals(computedStyle.getPropertyValue('--length'), '10px'); |
| sheetStyle.setProperty('--length', '20px'); |
| assert_equals(computedStyle.getPropertyValue('--length'), '20px'); |
| sheetStyle.setProperty('--length', 'initial'); |
| assert_equals(computedStyle.getPropertyValue('--length'), '0px'); |
| }, "Stylesheets can be modified by CSSOM"); |
| |
| test(function() { |
| inlineStyle.setProperty('--length', '30px'); |
| inlineStyle.setProperty('--color', 'pink'); |
| assert_equals(inlineStyle.getPropertyValue('--length'), '30px'); |
| assert_equals(inlineStyle.getPropertyValue('--color'), 'pink'); |
| assert_equals(computedStyle.getPropertyValue('--length'), '30px'); |
| assert_equals(computedStyle.getPropertyValue('--color'), 'rgb(255, 192, 203)'); |
| inlineStyle.setProperty('--color', 'inherit'); |
| assert_equals(inlineStyle.getPropertyValue('--color'), 'inherit'); |
| assert_equals(computedStyle.getPropertyValue('--color'), 'rgb(0, 0, 255)'); |
| }, "Valid values can be set on inline styles"); |
| </script> |
