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<?php |
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|
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/** |
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* @copyright © Melograno Venture Studio. All rights reserved. |
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* @licence See LICENCE.md for license details. |
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*/ |
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|
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namespace IvyForms\Services\Form\Style; |
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|
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// phpcs:disable PSR1.Files.SideEffects |
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if (!defined('ABSPATH')) { |
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exit; // Exit if accessed directly |
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} |
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|
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/** |
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* Class FormStyleService |
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* |
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* Generates scoped CSS from form style settings |
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* |
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* @package IvyForms\Services\Form |
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*/ |
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class FormStyleService |
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{ |
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/** |
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* Generate scoped CSS for a form |
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* |
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* @param int $formId |
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* @param array<string, mixed>|null $styleSettings |
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* @param string|null $formType |
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* @return string |
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*/ |
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public static function generateFormCSS(int $formId, ?array $styleSettings, ?string $formType = null): string |
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{ |
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$resolvedCss = self::resolveFormCssOutput($formId, $styleSettings, $formType); |
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if ($resolvedCss !== null) { |
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return $resolvedCss; |
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} |
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|
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return self::buildClassicFormCss($formId, $styleSettings); |
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} |
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|
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/** |
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* @param array<string, mixed>|null $styleSettings |
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*/ |
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private static function resolveFormCssOutput(int $formId, ?array $styleSettings, ?string $formType): ?string |
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{ |
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if (empty($styleSettings)) { |
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return ''; |
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} |
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|
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if (isset($styleSettings['stylesEnabled']) && $styleSettings['stylesEnabled'] === false) { |
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return self::generateResetCSS($formId, $styleSettings); |
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} |
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|
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$extensionCss = apply_filters( |
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'ivyforms/form/style/generate_css', |
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null, |
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$formId, |
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$styleSettings, |
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$formType |
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); |
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|
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if (is_string($extensionCss)) { |
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return $extensionCss; |
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} |
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|
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if (!empty($formType) && $formType !== 'classic') { |
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return ''; |
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} |
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|
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return null; |
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} |
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|
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/** |
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* @param array<string, mixed> $styleSettings |
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*/ |
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private static function buildClassicFormCss(int $formId, array $styleSettings): string |
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{ |
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$css = new CssBuilder(); |
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$context = self::buildContext($formId, $styleSettings); |
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|
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// Generate all CSS sections using factory |
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$generators = StyleGeneratorFactory::createGenerators(); |
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|
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foreach ($generators as $generator) { |
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$generator->generate($css, $context); |
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} |
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|
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$extraRules = apply_filters('ivyforms/style/filter/css_rules', [], [ |
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'baseSelector' => $context->getBaseSelector(), |
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'styleSettings' => $styleSettings, |
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'formPopperScopeClass' => 'ivyforms-form-popper-' . self::normalizeFormScopeToken((string) $formId), |
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]); |
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|
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if (is_array($extraRules) && $extraRules !== []) { |
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$css->addLines($extraRules); |
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} |
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|
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return $css->build(); |
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} |
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|
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/** |
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* Generate a scoped reset stylesheet for forms with styles disabled (Approach A). |
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* |
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* Strips IvyForms base SCSS + the global Element Plus chrome down to a neutral |
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* baseline so the host WordPress theme's typography/colors cascade in. Scoped to |
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* the form wrapper and the form's popper class so it never affects the rest of |
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* the page. Mirrors the frontend generator in |
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* frontend/src/utils/form-styles/resetStyles.ts — keep the two in sync. |
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* |
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* @param int $formId |
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* @param array<string, mixed> $styleSettings |
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* @return string |
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*/ |
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private static function generateResetCSS(int $formId, array $styleSettings): string |
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{ |
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$selectors = self::buildSelectors($formId, $styleSettings); |
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$base = $selectors['base']; |
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$popper = 'ivyforms-form-popper-' . self::normalizeFormScopeToken((string) $formId); |
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|
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$css = new CssBuilder(); |
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|
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// 0. Neutralize the brand/accent design tokens so no Ivy purple/teal remains |
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// on checkboxes, radios, selects, date pickers, tags, rich-text tabs, etc. |
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// Applied to the form wrapper AND the form's popper scope (poppers render at |
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// <body> level, outside the wrapper). |
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$tokenLines = self::buildNeutralTokenDeclarations(); |
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$css->addRule($base, $tokenLines); |
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$css->addRule('.' . $popper, $tokenLines); |
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|
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// 1. Typography inheritance — inherited props walk up to the theme. |
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$css->addRule([ |
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$base, |
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$base . ' label', |
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$base . ' input', |
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$base . ' textarea', |
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$base . ' .el-input__inner', |
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$base . ' .el-textarea__inner', |
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$base . ' .el-select__placeholder', |
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$base . ' .el-select__selected-item', |
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$base . ' .el-select__selection', |
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$base . ' .vti__input', |
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// Labels — force every label-bearing element to the theme color so |
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// labels are uniform across simple, composite (Name/Address) and |
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// special fields. Some fall through to EP's grey `.el-form-item__label` |
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// or Ivy's dark navy `--map-base-text-0`; both are overridden here. |
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$base . ' .el-form-item__label', |
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$base . ' .ivyforms-form-item__label', |
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$base . ' .ivyforms-form-item__left-label', |
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$base . ' .ivyforms-form-item__right-label', |
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$base . ' .ivyforms-form-item__positioned-right-label', |
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$base . ' .ivyforms-form-item__info-text', |
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$base . ' .ivyforms-name-field__label', |
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$base . ' .ivyforms-name-field__layout__field-wrapper__sublabel', |
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$base . ' .ivyforms-field__address-label', |
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$base . ' .el-checkbox__label', |
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$base . ' .el-radio__label', |
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], [ |
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' font-family: inherit !important;', |
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' font-size: inherit !important;', |
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' font-weight: inherit !important;', |
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' font-style: inherit !important;', |
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' line-height: inherit !important;', |
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' letter-spacing: inherit !important;', |
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' color: inherit !important;', |
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]); |
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|
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// 2. Field container chrome — strip EP + IvyForms boxing (incl. composite fields). |
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$css->addRule([ |
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$base . ' .el-input__wrapper', |
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$base . ' .el-select__wrapper', |
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$base . ' .el-textarea__inner', |
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$base . ' .el-input-number', |
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$base . ' .ivyforms-text-number', |
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$base . ' .ivyforms-text-number__input', |
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$base . ' .vue-tel-input', |
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$base . ' .vti__dropdown', |
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$base . ' .choices__inner', |
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], [ |
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' box-shadow: none !important;', |
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' border: 0 !important;', |
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' background: transparent !important;', |
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' border-radius: 0 !important;', |
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' padding: 0 !important;', |
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' min-height: 0 !important;', |
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' height: auto !important;', |
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' overflow: visible !important;', |
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]); |
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|
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// 3. Inner inputs — remove residual borders/backgrounds (no double box). |
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$css->addRule([ |
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$base . ' .el-input__inner', |
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$base . ' .el-textarea__inner', |
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$base . ' .el-select__input', |
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$base . ' .el-select__selection', |
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$base . ' .vti__input', |
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], [ |
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' box-shadow: none !important;', |
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' border: 0 !important;', |
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' background: transparent !important;', |
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' padding: 0 !important;', |
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' margin: 0 !important;', |
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' height: auto !important;', |
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' min-height: 0 !important;', |
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]); |
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|
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// 3b. Release EP fixed-height pins on wrappers/containers. |
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$css->addRule([ |
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$base . ' .el-input', |
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$base . ' .el-select', |
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$base . ' .el-date-editor', |
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$base . ' .ivyforms-input', |
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$base . ' .ivyforms-phone-input', |
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$base . ' .ivyforms-field__phone', |
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$base . ' .ivyforms-field__select', |
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$base . ' .ivyforms-field__address', |
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$base . ' .ivyforms-field__date', |
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$base . ' .ivyforms-field__time', |
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], [ |
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' height: auto !important;', |
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' min-height: 0 !important;', |
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]); |
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|
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// 4. Buttons — neutral, native-looking button; font inherits the theme. |
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$buttonTargets = [ |
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$base . ' .ivyforms-form-submit .ivyforms-button-action', |
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$base . ' .ivyforms-form-submit button.ivyforms-button-action', |
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$base . ' .ivyforms-form-page-navigation .ivyforms-button-action', |
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$base . ' .ivyforms-form-page-navigation button.ivyforms-button-action', |
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]; |
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$css->addRule($buttonTargets, [ |
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' background: revert !important;', |
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' color: revert !important;', |
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' border: revert !important;', |
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' border-radius: 0 !important;', |
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' box-shadow: none !important;', |
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' padding: revert !important;', |
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' width: revert !important;', |
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' height: revert !important;', |
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' min-width: 0 !important;', |
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' min-height: 0 !important;', |
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' font-family: inherit !important;', |
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' font-size: inherit !important;', |
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]); |
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$css->addRule(array_map(static function (string $selector): string { |
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return $selector . ':hover'; |
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}, $buttonTargets), [ |
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' opacity: 1 !important;', |
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' transform: none !important;', |
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]); |
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|
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// 4b. Slider — IvySlider's own custom props come from the neutral "dusk" |
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// token family, so redefine them to the theme color (progress + thumb |
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// become currentColor, empty runway a faint tint). !important guards |
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// against the component's scoped custom-property definitions. |
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$css->addRule($base . ' .ivyforms-slider', [ |
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' --ivy-slider-primary: currentColor !important;', |
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' --ivy-slider-track-bg: color-mix(in srgb, currentColor 20%, transparent) !important;', |
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' --ivy-slider-text: currentColor !important;', |
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]); |
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|
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// 5. Poppers render at <body> level; keep EP defaults, just realign the font. |
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$css->addRule([ |
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'.' . $popper, |
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'.' . $popper . ' *', |
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], [ |
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' font-family: inherit !important;', |
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]); |
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|
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return $css->build(); |
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} |
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|
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/** |
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* Build the custom-property declarations that neutralize the IvyForms brand |
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* accent (mirrors frontend resetStyles.ts buildNeutralTokenDeclarations). |
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* `!important` is required — the :root.wcag-compliant token definitions |
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* out-specify a single wrapper class. |
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* |
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* @return string[] |
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*/ |
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private static function buildNeutralTokenDeclarations(): array |
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{ |
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// Neutral replacements for the IvyForms brand/accent tokens. The goal is |
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// "don't style anything ourselves — match the host theme", so solids |
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// resolve to `currentColor` (the element's inherited theme text color, |
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// which self-adjusts to light/dark) and alpha tokens are a faint tint of |
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// that same color via color-mix(). If color-mix() is unsupported the |
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// declaration is invalid-at-computed-value-time and falls back to |
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// transparent — never back to the Ivy purple. |
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$neutralSolid = 'currentColor'; |
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$neutralAlpha = 'color-mix(in srgb, currentColor 12%, transparent)'; |
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|
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// Translucent tints for the Element Plus primary "light" ramp. |
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$elPrimaryLight = [ |
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'3' => 'color-mix(in srgb, currentColor 40%, transparent)', |
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'5' => 'color-mix(in srgb, currentColor 30%, transparent)', |
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'7' => 'color-mix(in srgb, currentColor 20%, transparent)', |
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'8' => 'color-mix(in srgb, currentColor 12%, transparent)', |
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'9' => 'color-mix(in srgb, currentColor 8%, transparent)', |
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]; |
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|
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$families = ['brand', 'purple']; |
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$fillLevels = ['4', '3', '2', '1', '0', '-1', '-2', '-3', '-4']; |
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$alphaLevels = ['o90', 'o80', 'o70', 'o60', 'o50', 'o40', 'o30', 'o20', 'o10', 'o05']; |
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$strokeLevels = ['2', '1', '0', '-1', '-2']; |
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$symbolLevels = ['2', '1', '0', '-1']; |
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|
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$lines = []; |
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foreach ($families as $family) { |
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foreach ($fillLevels as $level) { |
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$lines[] = ' --map-base-' . $family . '-fill-' . $level . ': ' . $neutralSolid . ' !important;'; |
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} |
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foreach ($alphaLevels as $level) { |
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$lines[] = ' --map-base-' . $family . '-' . $level . ': ' . $neutralAlpha . ' !important;'; |
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} |
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foreach ($strokeLevels as $level) { |
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$lines[] = ' --map-base-' . $family . '-stroke-' . $level . ': ' . $neutralSolid . ' !important;'; |
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} |
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foreach ($symbolLevels as $level) { |
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$lines[] = ' --map-base-' . $family . '-symbol-' . $level . ': ' . $neutralSolid . ' !important;'; |
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} |
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} |
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|
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// Plain brand token (IvyTimePicker maps --el-color-primary from this). |
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$lines[] = ' --map-base-brand-0: ' . $neutralSolid . ' !important;'; |
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|
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// Element Plus primary — drives default focus rings and picker highlights. |
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$lines[] = ' --el-color-primary: ' . $neutralSolid . ' !important;'; |
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$lines[] = ' --el-color-primary-light-3: ' . $elPrimaryLight['3'] . ' !important;'; |
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$lines[] = ' --el-color-primary-light-5: ' . $elPrimaryLight['5'] . ' !important;'; |
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$lines[] = ' --el-color-primary-light-7: ' . $elPrimaryLight['7'] . ' !important;'; |
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$lines[] = ' --el-color-primary-light-8: ' . $elPrimaryLight['8'] . ' !important;'; |
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$lines[] = ' --el-color-primary-light-9: ' . $elPrimaryLight['9'] . ' !important;'; |
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$lines[] = ' --el-color-primary-dark-2: ' . $neutralSolid . ' !important;'; |
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|
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return $lines; |
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} |
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|
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/** |
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* Normalize form ID for scoped CSS class names (mirrors frontend selectors helper). |
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*/ |
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private static function normalizeFormScopeToken(string $formId): string |
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{ |
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$normalized = trim($formId); |
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$normalized = preg_replace('/[^a-zA-Z0-9_-]+/', '-', $normalized) ?? ''; |
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$normalized = preg_replace('/-+/', '-', $normalized) ?? ''; |
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$normalized = trim($normalized, '-'); |
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|
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return $normalized !== '' ? $normalized : 'default'; |
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} |
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|
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/** |
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* Build the style context from form ID and settings |
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* |
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* @param int $formId |
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* @param array<string, mixed> $styleSettings |
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* @return StyleContext |
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*/ |
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private static function buildContext(int $formId, array $styleSettings): StyleContext |
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{ |
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$selectors = self::buildSelectors($formId, $styleSettings); |
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$parser = new StyleSettingsParser($styleSettings); |
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|
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return new StyleContext( |
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$selectors['base'], |
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$selectors['innerWrapper'], |
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$selectors['form'], |
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$formId, |
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$parser->getActiveColors(), |
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$parser->getActiveStyles(), |
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$styleSettings |
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); |
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} |
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|
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/** |
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* Build CSS selectors for the form |
| 377 |
* |
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* @param int $formId |
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* @param array<string, mixed> $styleSettings |
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* @return array<string, string> |
| 381 |
*/ |
| 382 |
private static function buildSelectors(int $formId, array $styleSettings): array |
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{ |
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$formWrapperSelector = '.ivyforms-form-wrapper-' . $formId; |
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$innerWrapperSelector = '.ivyforms-form-wrapper.ivyforms-form-wrapper-' . $formId; |
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$formSelector = '.ivyforms-form-' . $formId; |
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$parsedCustomClasses = self::parseCssClassList($styleSettings['customCssClass'] ?? ''); |
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$customClassName = $parsedCustomClasses[0] ?? ''; |
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$customClass = $customClassName !== '' ? '.' . $customClassName : ''; |
| 390 |
|
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$baseSelector = $formWrapperSelector; |
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if ($customClass) { |
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$baseSelector .= $customClass; |
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} |
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|
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return [ |
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'base' => $baseSelector, |
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'innerWrapper' => $innerWrapperSelector, |
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'form' => $formSelector, |
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]; |
| 401 |
} |
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|
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/** |
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* Parse a CSS class list with the same semantics as the frontend class parser. |
| 405 |
* |
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* Splits on commas and whitespace, keeps unique valid class tokens in first-seen |
| 407 |
* order, and drops tokens that do not match a CSS class name pattern. |
| 408 |
* |
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* @param mixed $rawValue |
| 410 |
* @return list<string> |
| 411 |
*/ |
| 412 |
private static function parseCssClassList($rawValue): array |
| 413 |
{ |
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if (!is_string($rawValue) || $rawValue === '') { |
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return []; |
| 416 |
} |
| 417 |
|
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$uniqueClassNames = []; |
| 419 |
|
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foreach (explode(',', $rawValue) as $entry) { |
| 421 |
$entry = trim($entry); |
| 422 |
if ($entry === '') { |
| 423 |
continue; |
| 424 |
} |
| 425 |
|
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$classTokens = preg_split('/\s+/', $entry) ?: []; |
| 427 |
foreach ($classTokens as $token) { |
| 428 |
if (preg_match('/^[A-Za-z_-][A-Za-z0-9_-]*$/', $token) === 1) { |
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$uniqueClassNames[$token] = true; |
| 430 |
} |
| 431 |
} |
| 432 |
} |
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|
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return array_keys($uniqueClassNames); |
| 435 |
} |
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} |
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|
