| 1 |
<?php |
| 2 |
/** |
| 3 |
* Per-form styling helper for donation forms. |
| 4 |
* |
| 5 |
* Reads the per-form styling meta and converts it into CSS custom properties |
| 6 |
* applied inline on the `.sd-form-container` wrapper. Only values the user set |
| 7 |
* are emitted; everything else falls back to the defaults in |
| 8 |
* src/blocks/styles/_variables.scss. |
| 9 |
* |
| 10 |
* @package SureDonation |
| 11 |
* @since 1.0.0 |
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*/ |
| 13 |
|
| 14 |
namespace SureDonation\Inc\Fields; |
| 15 |
|
| 16 |
use SureDonation\Inc\Post_Types\Donation_Form; |
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|
| 18 |
if ( ! defined( 'ABSPATH' ) ) { |
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exit; // Exit if accessed directly. |
| 20 |
} |
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|
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/** |
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* Form_Styling class. |
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* |
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* @since 1.0.0 |
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*/ |
| 27 |
class Form_Styling { |
| 28 |
|
| 29 |
/** |
| 30 |
* Field-spacing presets. Each sets the full density variable set (matching |
| 31 |
* SureForms' field-spacing scaling). "medium" mirrors the :root defaults in |
| 32 |
* src/blocks/styles/_variables.scss, so it is never emitted (defaults apply). |
| 33 |
* |
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* Kept in sync with SPACING_MAP in src/editor/form-style-vars.js (editor |
| 35 |
* preview) — update both together. |
| 36 |
* |
| 37 |
* @var array<string, array<string, string>> |
| 38 |
*/ |
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private const SPACING_MAP = [ |
| 40 |
'small' => [ |
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'--sd-row-gap-between-blocks' => '16px', |
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'--sd-column-gap-between-blocks' => '12px', |
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'--sd-col-gap-between-fields' => '12px', |
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'--sd-input-height' => '40px', |
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'--sd-input-field-padding' => '10px 12px', |
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'--sd-input-field-font-size' => '14px', |
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'--sd-input-field-line-height' => '20px', |
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'--sd-input-field-margin-top' => '4px', |
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'--sd-input-field-margin-bottom' => '4px', |
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'--sd-label-font-size' => '14px', |
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'--sd-label-line-height' => '20px', |
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'--sd-description-font-size' => '12px', |
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'--sd-description-line-height' => '16px', |
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'--sd-btn-padding' => '8px 14px', |
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'--sd-btn-font-size' => '14px', |
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'--sd-btn-line-height' => '20px', |
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'--sd-donation-amount-vertical-padding' => '16px', |
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'--sd-donation-amount-internal-option-gap' => '8px', |
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'--sd-donation-amount-outer-padding' => '0', |
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'--sd-checkbox-size' => '16px', |
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], |
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'large' => [ |
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'--sd-row-gap-between-blocks' => '20px', |
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'--sd-column-gap-between-blocks' => '16px', |
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'--sd-col-gap-between-fields' => '16px', |
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'--sd-input-height' => '48px', |
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'--sd-input-field-padding' => '10px 14px', |
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'--sd-input-field-font-size' => '18px', |
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'--sd-input-field-line-height' => '28px', |
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'--sd-input-field-margin-top' => '8px', |
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'--sd-input-field-margin-bottom' => '8px', |
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'--sd-label-font-size' => '18px', |
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'--sd-label-line-height' => '28px', |
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'--sd-description-font-size' => '16px', |
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'--sd-description-line-height' => '24px', |
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'--sd-btn-padding' => '10px 14px', |
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'--sd-btn-font-size' => '18px', |
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'--sd-btn-line-height' => '28px', |
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'--sd-donation-amount-vertical-padding' => '24px', |
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'--sd-donation-amount-internal-option-gap' => '12px', |
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'--sd-donation-amount-outer-padding' => '4px', |
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'--sd-checkbox-size' => '20px', |
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], |
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]; |
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|
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/** |
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* Default settings (also the editor panel defaults). |
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* |
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* @return array<string, mixed> |
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* @since 1.0.0 |
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*/ |
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public static function get_defaults() { |
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return [ |
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'bgType' => 'color', |
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'bgColor' => '', |
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'bgGradient' => 'linear-gradient(90deg,#FFC9B2 0%,#C7CBFF 100%)', |
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'bgImage' => '', |
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'bgImageId' => 0, |
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'bgImageSize' => 'cover', |
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'bgImagePosition' => 'center center', |
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'bgImageRepeat' => 'no-repeat', |
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// Colors default to empty here so unset values fall through to the |
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// :root defaults in _variables.scss (the editor's STYLE_DEFAULTS seeds |
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// the actual hex values instead, only to populate the panel swatches). |
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'primaryColor' => '', |
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'textColor' => '', |
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'textOnPrimaryColor' => '', |
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'padding' => [ |
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'top' => '', |
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'right' => '', |
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'bottom' => '', |
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'left' => '', |
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], |
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'borderRadius' => [ |
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'top' => '', |
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'right' => '', |
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'bottom' => '', |
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'left' => '', |
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], |
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'fieldSpacing' => 'medium', |
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'buttonAlignment' => 'justify', |
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]; |
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} |
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|
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/** |
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* Read + merge the per-form styling settings. |
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* |
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* @param int $form_id Form post ID. |
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* @return array<string, mixed> |
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* @since 1.0.0 |
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*/ |
| 132 |
public static function get_settings( $form_id ) { |
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$defaults = self::get_defaults(); |
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$raw = get_post_meta( (int) $form_id, Donation_Form::META_STYLING, true ); |
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|
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if ( ! is_string( $raw ) || '' === $raw ) { |
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return $defaults; |
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} |
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|
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$decoded = json_decode( $raw, true ); |
| 141 |
if ( ! is_array( $decoded ) ) { |
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return $defaults; |
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} |
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|
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$settings = array_merge( $defaults, $decoded ); |
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$settings['padding'] = array_merge( $defaults['padding'], is_array( $decoded['padding'] ?? null ) ? $decoded['padding'] : [] ); |
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$settings['borderRadius'] = array_merge( $defaults['borderRadius'], is_array( $decoded['borderRadius'] ?? null ) ? $decoded['borderRadius'] : [] ); |
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|
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return $settings; |
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} |
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|
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/** |
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* Sanitize the styling meta JSON on save. |
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* |
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* @param mixed $value Raw meta value (JSON string). |
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* @return string Sanitized JSON string ('' when invalid/empty). |
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* @since 1.0.0 |
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*/ |
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public static function sanitize_json( $value ) { |
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if ( ! is_string( $value ) || '' === trim( $value ) ) { |
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return ''; |
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} |
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|
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$decoded = json_decode( $value, true ); |
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if ( ! is_array( $decoded ) ) { |
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return ''; |
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} |
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|
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$defaults = self::get_defaults(); |
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$clean = []; |
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|
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$clean['bgType'] = in_array( $decoded['bgType'] ?? '', [ 'color', 'gradient', 'image' ], true ) ? $decoded['bgType'] : 'color'; |
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$clean['bgColor'] = self::sanitize_color( $decoded['bgColor'] ?? '' ); |
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$clean['bgGradient'] = self::sanitize_gradient( $decoded['bgGradient'] ?? '' ); |
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// Strip quotes/parens so the URL can't break out of the url('...') wrap. |
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// The front-end render resolves the image from bgImageId instead. |
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$clean['bgImage'] = str_replace( [ "'", '"', '(', ')' ], '', esc_url_raw( (string) ( $decoded['bgImage'] ?? '' ) ) ); |
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$clean['bgImageId'] = absint( $decoded['bgImageId'] ?? 0 ); |
| 179 |
$clean['bgImageSize'] = in_array( $decoded['bgImageSize'] ?? '', [ 'cover', 'contain', 'auto' ], true ) ? $decoded['bgImageSize'] : 'cover'; |
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$clean['bgImageRepeat'] = in_array( $decoded['bgImageRepeat'] ?? '', [ 'no-repeat', 'repeat', 'repeat-x', 'repeat-y' ], true ) ? $decoded['bgImageRepeat'] : 'no-repeat'; |
| 181 |
// Position has no UI control; allow safe keyword/percentage values only. |
| 182 |
$clean['bgImagePosition'] = preg_match( '/^[a-z0-9%.\s]+$/i', (string) ( $decoded['bgImagePosition'] ?? '' ) ) ? trim( (string) $decoded['bgImagePosition'] ) : 'center center'; |
| 183 |
$clean['primaryColor'] = self::sanitize_color( $decoded['primaryColor'] ?? '' ); |
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$clean['textColor'] = self::sanitize_color( $decoded['textColor'] ?? '' ); |
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$clean['textOnPrimaryColor'] = self::sanitize_color( $decoded['textOnPrimaryColor'] ?? '' ); |
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$clean['padding'] = self::sanitize_box( $decoded['padding'] ?? [], $defaults['padding'] ); |
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$clean['borderRadius'] = self::sanitize_box( $decoded['borderRadius'] ?? [], $defaults['borderRadius'] ); |
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$clean['fieldSpacing'] = in_array( $decoded['fieldSpacing'] ?? '', [ 'small', 'medium', 'large' ], true ) ? $decoded['fieldSpacing'] : 'medium'; |
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$clean['buttonAlignment'] = in_array( $decoded['buttonAlignment'] ?? '', [ 'left', 'center', 'right', 'justify' ], true ) ? $decoded['buttonAlignment'] : 'justify'; |
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|
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$encoded = wp_json_encode( $clean ); |
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return is_string( $encoded ) ? $encoded : ''; |
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} |
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|
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/** |
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* Build the inline CSS custom-property string for the form wrapper. |
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* |
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* Returns the CSS declarations only (no surrounding style attribute). The |
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* caller is expected to output the result via esc_attr() inside a style |
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* attribute, which the browser HTML-decodes before the CSS parser runs. |
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* |
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* @param int $form_id Form post ID. |
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* @return string CSS declarations, or '' when nothing is customized. |
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* @since 1.0.0 |
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*/ |
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public static function get_style_attr( $form_id ) { |
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$settings = self::get_settings( $form_id ); |
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$vars = []; |
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|
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// Colors. Color-derived tints are emitted per-form so they track the |
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// chosen color: the static :root @supports defaults in _variables.scss are |
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// computed from the default brand/text colors and cannot see a per-form |
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// override (they live on :root, the override on the form container), so |
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// without this the button hover and field tints stay default. Ratios |
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// mirror that @supports block and SureForms' inc/generate-form-markup.php. |
| 216 |
// Keep in sync with buildStyleVars() in src/editor/form-style-vars.js. |
| 217 |
if ( '' !== $settings['primaryColor'] ) { |
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$primary = $settings['primaryColor']; |
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$vars['--sd-color-scheme-primary'] = $primary; |
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$vars['--sd-color-scheme-primary-hover'] = "hsl(from {$primary} h s l / 0.9)"; |
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$vars['--sd-color-input-border-hover'] = "hsl(from {$primary} h s l / 0.65)"; |
| 222 |
$vars['--sd-color-input-border-focus-glow'] = "hsl(from {$primary} h s l / 0.15)"; |
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$vars['--sd-color-input-selected'] = "hsl(from {$primary} h s l / 0.1)"; |
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} |
| 225 |
if ( '' !== $settings['textColor'] ) { |
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$text = $settings['textColor']; |
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$vars['--sd-color-input-text'] = $text; |
| 228 |
$vars['--sd-color-input-label'] = $text; |
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$vars['--sd-color-input-description'] = "hsl(from {$text} h s l / 0.65)"; |
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$vars['--sd-color-input-placeholder'] = "hsl(from {$text} h s l / 0.5)"; |
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$vars['--sd-color-input-background'] = "hsl(from {$text} h s l / 0.02)"; |
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$vars['--sd-color-input-background-hover'] = "hsl(from {$text} h s l / 0.05)"; |
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$vars['--sd-color-input-border'] = "hsl(from {$text} h s l / 0.25)"; |
| 234 |
$vars['--sd-color-donation-amount-svg'] = "hsl(from {$text} h s l / 0.7)"; |
| 235 |
$vars['--sd-color-input-prefix'] = "hsl(from {$text} h s l / 0.65)"; |
| 236 |
$vars['--sd-disabled-color'] = "hsl(from {$text} h s l / 0.5)"; |
| 237 |
$vars['--sd-disabled-background-color'] = "hsl(from {$text} h s l / 0.07)"; |
| 238 |
$vars['--sd-disabled-border'] = "hsl(from {$text} h s l / 0.15)"; |
| 239 |
} |
| 240 |
if ( '' !== $settings['textOnPrimaryColor'] ) { |
| 241 |
$vars['--sd-btn-text-color'] = $settings['textOnPrimaryColor']; |
| 242 |
} |
| 243 |
|
| 244 |
// Background. |
| 245 |
$background = self::background_value( $settings ); |
| 246 |
if ( '' !== $background ) { |
| 247 |
$vars['--sd-form-background'] = $background; |
| 248 |
} |
| 249 |
|
| 250 |
// Padding / border radius. |
| 251 |
$padding = self::box_value( $settings['padding'] ); |
| 252 |
if ( '' !== $padding ) { |
| 253 |
$vars['--sd-form-padding'] = $padding; |
| 254 |
} |
| 255 |
$radius = self::box_value( $settings['borderRadius'] ); |
| 256 |
if ( '' !== $radius ) { |
| 257 |
$vars['--sd-form-border-radius'] = $radius; |
| 258 |
} |
| 259 |
|
| 260 |
// Field spacing — the full density set; "medium" matches _variables.scss |
| 261 |
// defaults, so it is skipped. |
| 262 |
if ( 'medium' !== $settings['fieldSpacing'] && isset( self::SPACING_MAP[ $settings['fieldSpacing'] ] ) ) { |
| 263 |
foreach ( self::SPACING_MAP[ $settings['fieldSpacing'] ] as $name => $value ) { |
| 264 |
$vars[ $name ] = $value; |
| 265 |
} |
| 266 |
} |
| 267 |
|
| 268 |
// Button alignment — skip the default ('justify'); CSS fallback applies. |
| 269 |
$align_map = [ |
| 270 |
'left' => 'flex-start', |
| 271 |
'center' => 'center', |
| 272 |
'right' => 'flex-end', |
| 273 |
]; |
| 274 |
if ( isset( $align_map[ $settings['buttonAlignment'] ] ) ) { |
| 275 |
$vars['--sd-btn-align-items'] = $align_map[ $settings['buttonAlignment'] ]; |
| 276 |
$vars['--sd-btn-width'] = 'auto'; |
| 277 |
} |
| 278 |
|
| 279 |
if ( empty( $vars ) ) { |
| 280 |
return ''; |
| 281 |
} |
| 282 |
|
| 283 |
$declarations = []; |
| 284 |
foreach ( $vars as $name => $value ) { |
| 285 |
$declarations[] = $name . ':' . $value; |
| 286 |
} |
| 287 |
|
| 288 |
return implode( ';', $declarations ) . ';'; |
| 289 |
} |
| 290 |
|
| 291 |
/** |
| 292 |
* Build the `background` shorthand value from the settings. |
| 293 |
* |
| 294 |
* @param array<string, mixed> $settings Merged settings. |
| 295 |
* @return string |
| 296 |
* @since 1.0.0 |
| 297 |
*/ |
| 298 |
private static function background_value( $settings ) { |
| 299 |
switch ( $settings['bgType'] ) { |
| 300 |
case 'gradient': |
| 301 |
return '' !== $settings['bgGradient'] ? $settings['bgGradient'] : ''; |
| 302 |
case 'image': |
| 303 |
// Resolve the URL from the attachment ID (trusted, from the media |
| 304 |
// library) rather than the stored URL string; fall back to the |
| 305 |
// sanitized stored URL only if the attachment can't be resolved. |
| 306 |
$image_url = ! empty( $settings['bgImageId'] ) |
| 307 |
? wp_get_attachment_image_url( (int) $settings['bgImageId'], 'full' ) |
| 308 |
: ''; |
| 309 |
if ( empty( $image_url ) ) { |
| 310 |
$image_url = $settings['bgImage']; |
| 311 |
} |
| 312 |
if ( '' === $image_url ) { |
| 313 |
return ''; |
| 314 |
} |
| 315 |
// Guard the shorthand parts so an empty value can't make it invalid. |
| 316 |
$position = '' !== $settings['bgImagePosition'] ? $settings['bgImagePosition'] : 'center center'; |
| 317 |
$size = '' !== $settings['bgImageSize'] ? $settings['bgImageSize'] : 'cover'; |
| 318 |
$repeat = '' !== $settings['bgImageRepeat'] ? $settings['bgImageRepeat'] : 'no-repeat'; |
| 319 |
return sprintf( |
| 320 |
"url('%s') %s / %s %s", |
| 321 |
esc_url_raw( $image_url ), |
| 322 |
$position, |
| 323 |
$size, |
| 324 |
$repeat |
| 325 |
); |
| 326 |
case 'color': |
| 327 |
default: |
| 328 |
return '' !== $settings['bgColor'] ? $settings['bgColor'] : ''; |
| 329 |
} |
| 330 |
} |
| 331 |
|
| 332 |
/** |
| 333 |
* Build a 4-side CSS shorthand (e.g. padding) from a box setting. |
| 334 |
* |
| 335 |
* @param array<string, mixed> $box Box setting (top/right/bottom/left/unit). |
| 336 |
* @return string Shorthand value, or '' when no side is set. |
| 337 |
* @since 1.0.0 |
| 338 |
*/ |
| 339 |
private static function box_value( $box ) { |
| 340 |
$any = false; |
| 341 |
$parts = []; |
| 342 |
|
| 343 |
foreach ( [ 'top', 'right', 'bottom', 'left' ] as $side ) { |
| 344 |
$length = self::sanitize_length( $box[ $side ] ?? '' ); |
| 345 |
if ( '' !== $length ) { |
| 346 |
$any = true; |
| 347 |
} |
| 348 |
$parts[] = '' !== $length ? $length : '0'; |
| 349 |
} |
| 350 |
|
| 351 |
return $any ? implode( ' ', $parts ) : ''; |
| 352 |
} |
| 353 |
|
| 354 |
/** |
| 355 |
* Sanitize a box setting for storage (per-side CSS lengths). |
| 356 |
* |
| 357 |
* @param mixed $box Incoming box value. |
| 358 |
* @param array<string, mixed> $fallback Default box. |
| 359 |
* @return array<string, mixed> |
| 360 |
* @since 1.0.0 |
| 361 |
*/ |
| 362 |
private static function sanitize_box( $box, $fallback ) { |
| 363 |
if ( ! is_array( $box ) ) { |
| 364 |
return $fallback; |
| 365 |
} |
| 366 |
|
| 367 |
$clean = []; |
| 368 |
foreach ( [ 'top', 'right', 'bottom', 'left' ] as $side ) { |
| 369 |
$clean[ $side ] = self::sanitize_length( $box[ $side ] ?? '' ); |
| 370 |
} |
| 371 |
|
| 372 |
return $clean; |
| 373 |
} |
| 374 |
|
| 375 |
/** |
| 376 |
* Validate a CSS length (e.g. "10px", "1.5rem"); bare numbers become px. |
| 377 |
* |
| 378 |
* @param mixed $value Incoming value. |
| 379 |
* @return string Valid length, or '' when invalid/empty. |
| 380 |
* @since 1.0.0 |
| 381 |
*/ |
| 382 |
private static function sanitize_length( $value ) { |
| 383 |
if ( is_numeric( $value ) ) { |
| 384 |
return ( 0 + $value ) . 'px'; |
| 385 |
} |
| 386 |
$value = is_string( $value ) ? trim( $value ) : ''; |
| 387 |
if ( '' === $value ) { |
| 388 |
return ''; |
| 389 |
} |
| 390 |
return preg_match( '/^-?\d*\.?\d+(px|em|rem|%|vw|vh)$/', $value ) ? $value : ''; |
| 391 |
} |
| 392 |
|
| 393 |
/** |
| 394 |
* Sanitize a color value via a strict allowlist. |
| 395 |
* |
| 396 |
* Accepts hex, rgb()/rgba()/hsl()/hsla() with numeric arguments only, or a |
| 397 |
* bare named color. Anything else (e.g. "red url(https://…)") is rejected so |
| 398 |
* a color field cannot smuggle an external resource into the inline style. |
| 399 |
* |
| 400 |
* @param mixed $value Incoming color. |
| 401 |
* @return string Valid color, or '' when invalid/empty. |
| 402 |
* @since 1.0.0 |
| 403 |
*/ |
| 404 |
private static function sanitize_color( $value ) { |
| 405 |
$value = is_string( $value ) ? trim( $value ) : ''; |
| 406 |
if ( '' === $value ) { |
| 407 |
return ''; |
| 408 |
} |
| 409 |
// Hex: #rgb / #rgba / #rrggbb / #rrggbbaa. |
| 410 |
if ( preg_match( '/^#([A-Fa-f0-9]{8}|[A-Fa-f0-9]{6}|[A-Fa-f0-9]{4}|[A-Fa-f0-9]{3})$/', $value ) ) { |
| 411 |
return $value; |
| 412 |
} |
| 413 |
// Functional notation with numeric arguments only (no nested functions). |
| 414 |
if ( preg_match( '/^(rgb|rgba|hsl|hsla)\(\s*[0-9.,%\/\s]+\)$/i', $value ) ) { |
| 415 |
return $value; |
| 416 |
} |
| 417 |
// Named color — letters only, so it cannot contain parens/url()/escapes. |
| 418 |
if ( preg_match( '/^[a-z]+$/i', $value ) ) { |
| 419 |
return $value; |
| 420 |
} |
| 421 |
// CSS custom-property reference for theme/global palette colors, e.g. |
| 422 |
// var(--wp--preset--color--primary), with an optional safe fallback |
| 423 |
// (hex / named / numeric rgb()|hsl() / one nested var). The property name |
| 424 |
// is restricted to [A-Za-z0-9_-] and the whole value is anchored, so it |
| 425 |
// cannot contain quotes, semicolons, url() or escapes that would break out |
| 426 |
// of the inline style attribute. |
| 427 |
if ( preg_match( '/^var\(\s*--[A-Za-z0-9_-]+\s*(,\s*(#[A-Fa-f0-9]{3,8}|[A-Za-z]+|(?:rgb|rgba|hsl|hsla)\([0-9.,%\/\s]+\)|var\(\s*--[A-Za-z0-9_-]+\s*\)))?\s*\)$/i', $value ) ) { |
| 428 |
return $value; |
| 429 |
} |
| 430 |
return ''; |
| 431 |
} |
| 432 |
|
| 433 |
/** |
| 434 |
* Sanitize a CSS gradient value. |
| 435 |
* |
| 436 |
* Requires a (repeating-)?(linear|radial|conic)-gradient(…) shape and rejects |
| 437 |
* url(), at-rules, and declaration-breaking characters, so the gradient field |
| 438 |
* cannot reference an external resource or escape the inline style. |
| 439 |
* |
| 440 |
* @param mixed $value Incoming gradient. |
| 441 |
* @return string Valid gradient, or '' when invalid/empty. |
| 442 |
* @since 1.0.0 |
| 443 |
*/ |
| 444 |
private static function sanitize_gradient( $value ) { |
| 445 |
$value = is_string( $value ) ? trim( $value ) : ''; |
| 446 |
if ( '' === $value ) { |
| 447 |
return ''; |
| 448 |
} |
| 449 |
if ( preg_match( '/url\s*\(|@|[;{}<>"\'\\\\]/i', $value ) ) { |
| 450 |
return ''; |
| 451 |
} |
| 452 |
if ( ! preg_match( '/^(repeating-)?(linear|radial|conic)-gradient\(.*\)$/i', $value ) ) { |
| 453 |
return ''; |
| 454 |
} |
| 455 |
return $value; |
| 456 |
} |
| 457 |
} |
| 458 |
|
