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system-color-consistency.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS Color 4: System color consistency</title>
<link rel="author" title="Jan Keitel" href="mailto:jkeitel@google.com">
<link rel="help" href="https://www.w3.org/TR/css-color-4/#css-system-colors">
<meta name="assert" content="computed style of form elements is consistent with definition of system colors">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/computed-testcommon.js"></script>
</head>
<body>
<div style="display: none">
<div id="target"></div>
<!-- Reference elements -->
<!-- Buttons -->
<div id="buttons">
<button name="button"></button><input type="submit" name="submit button">
<input type="reset" name="reset button"><input type="color" name="color picker">
</div>
<!-- Input elements -->
<div id="fields">
<input type="text" name="text field"><input type="password" name="password field">
<input type="email" name="email field"><input type="number" name="number field">
<input type="date" name="date field">
<textarea name="text area"></textarea>
</div>
<mark id="mark">Marked text</mark>
<!-- Link -->
<a href="#" id="link">Link</a>
</div>
<script>
['light', 'dark'].forEach(colorScheme => {
document.documentElement.style.colorScheme = colorScheme;
// Buttons
for (let element of document.getElementById("buttons").children) {
style = document.defaultView.getComputedStyle(element);
test_computed_value('color', 'ButtonBorder', style.getPropertyValue('border-color'), `resolves to the same color as the border-color of a ${element.name} (${colorScheme})`);
test_computed_value('color', 'ButtonFace', style.getPropertyValue('background-color'), `resolves to the same color as the background-color of a ${element.name} (${colorScheme})`);
test_computed_value('color', 'ButtonText', style.getPropertyValue('color'), `resolves to the same color as text on a ${element.name} (${colorScheme})`);
}
// CanvasText
style = document.defaultView.getComputedStyle(document.getElementsByTagName('html')[0]);
test_computed_value('color', 'CanvasText', style.getPropertyValue('color'), `has the same color as the color of the html element (${colorScheme})`);
// Field and FieldText
for (let element of document.getElementById("fields").children) {
style = document.defaultView.getComputedStyle(element);
test_computed_value('color', 'Field', style.getPropertyValue('background-color'), `resolves to the same color as the background-color of a ${element.name} (${colorScheme})`);
test_computed_value('color', 'FieldText', style.getPropertyValue('color'), `resolves to the same color as text on a ${element.name} (${colorScheme})`);
}
// Mark and MarkText
style = document.defaultView.getComputedStyle(document.getElementById('mark'));
test_computed_value('color', 'Mark', style.getPropertyValue('background-color'), `has the same color as the background-color of a mark element (${colorScheme})`);
test_computed_value('color', 'MarkText', style.getPropertyValue('color'), `has the same color as the color of a mark element (${colorScheme})`);
// LinkText
style = document.defaultView.getComputedStyle(document.getElementById('link'));
test_computed_value('color', 'LinkText', style.getPropertyValue('color'), `has the same color as the color of an anchor element (${colorScheme})`);
});
</script>
</body>
</html>