color_scheme.php

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<?php
$user = elgg_extract('entity', $vars, elgg_get_page_owner_entity());
if (!$user instanceof \ElggUser) {
    return;
}
 
if (!elgg_get_config('color_schemes_enabled')) {
    return;
}
 
$css_vars = _elgg_services()->cssCompiler->getCssVars();
if (count($css_vars) < 2) {
    return;
}
 
$options = [
    'browser' => elgg_echo('user:color_scheme:browser'),
];
 
foreach ($css_vars as $key => $value) {
    $options[$key] = elgg_echo("color_scheme:{$key}");
}
 
echo elgg_view_field([
    '#type' => 'select',
    '#label' => elgg_echo('user:color_scheme:label'),
    'name' => 'color_scheme',
    'value' => $user->elgg_color_scheme ?? 'browser',
    'options_values' => $options,
]);