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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Drupal\name\Utility; |
| 6 | |
| 7 | use Drupal\Core\Render\Element; |
| 8 | use Drupal\name\Element\Name; |
| 9 | |
| 10 | /** |
| 11 | * Builds component sub-elements for the name Form API element. |
| 12 | * |
| 13 | * @internal |
| 14 | */ |
| 15 | final class ComponentBuilder { |
| 16 | |
| 17 | /** |
| 18 | * Builds a single component sub-element for process(). |
| 19 | * |
| 20 | * @param array $components |
| 21 | * Core properties for all components. |
| 22 | * @param string $component_key |
| 23 | * The component key of the component that is being rendered. |
| 24 | * @param array $base_element |
| 25 | * Base FAPI element that makes up a name element. |
| 26 | * @param bool $core |
| 27 | * Whether the component is required as part of a valid name. |
| 28 | * |
| 29 | * @return array |
| 30 | * The constructed component FAPI structure for a name element. |
| 31 | */ |
| 32 | public static function renderComponent( |
| 33 | array $components, |
| 34 | string $component_key, |
| 35 | array $base_element, |
| 36 | bool $core, |
| 37 | ): array { |
| 38 | $component = $components[$component_key]; |
| 39 | $element = self::buildElementAttributes($component); |
| 40 | $element['#attributes']['class'][] = 'name-' . $component_key; |
| 41 | |
| 42 | if ($core) { |
| 43 | $element['#attributes']['class'][] = 'name-core-component'; |
| 44 | } |
| 45 | |
| 46 | foreach (['type', 'title', 'size', 'maxlength'] as $key) { |
| 47 | $element['#' . $key] = $component[$key]; |
| 48 | } |
| 49 | |
| 50 | if (isset($base_element['#value'][$component_key])) { |
| 51 | $element['#default_value'] = $base_element['#value'][$component_key]; |
| 52 | } |
| 53 | $element = self::applyComponentInput($element, $component); |
| 54 | |
| 55 | ['show_marker' => $required_marker, 'flag_required' => $flag_required_input] |
| 56 | = self::resolveRequiredFlags($core, $base_element); |
| 57 | |
| 58 | return self::applyTitleDisplay( |
| 59 | $element, |
| 60 | $component['title_display'] ?? 'description', |
| 61 | $required_marker, |
| 62 | $flag_required_input, |
| 63 | ); |
| 64 | } |
| 65 | |
| 66 | /** |
| 67 | * Builds the base render array and merged attributes for a component. |
| 68 | * |
| 69 | * @param array $component |
| 70 | * Component definition. |
| 71 | * |
| 72 | * @return array |
| 73 | * Render array skeleton for the component. |
| 74 | */ |
| 75 | private static function buildElementAttributes(array $component): array { |
| 76 | $element = []; |
| 77 | foreach (Element::properties($component) as $key) { |
| 78 | $element[$key] = $component[$key]; |
| 79 | } |
| 80 | $element['#attributes']['class'][] = 'name-element'; |
| 81 | |
| 82 | if (isset($component['attributes'])) { |
| 83 | foreach ($component['attributes'] as $key => $attribute) { |
| 84 | if (!isset($element['#attributes'][$key])) { |
| 85 | $element['#attributes'][$key] = $attribute; |
| 86 | continue; |
| 87 | } |
| 88 | if (is_array($attribute)) { |
| 89 | $element['#attributes'][$key] = array_merge( |
| 90 | $element['#attributes'][$key], |
| 91 | $attribute, |
| 92 | ); |
| 93 | continue; |
| 94 | } |
| 95 | $element['#attributes'][$key] .= ' ' . $attribute; |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | return $element; |
| 100 | } |
| 101 | |
| 102 | /** |
| 103 | * Normalizes select options and extracts the placeholder label. |
| 104 | * |
| 105 | * @param array $options |
| 106 | * Select options. |
| 107 | * |
| 108 | * @return array |
| 109 | * Two-item array with normalized options and empty label. |
| 110 | */ |
| 111 | private static function normalizeSelectOptions(array $options): array { |
| 112 | $empty_label = NULL; |
| 113 | if (array_key_exists('_none', $options)) { |
| 114 | $empty_label = (string) $options['_none']; |
| 115 | unset($options['_none']); |
| 116 | } |
| 117 | |
| 118 | $clean_options = []; |
| 119 | foreach ($options as $label) { |
| 120 | $label = (string) $label; |
| 121 | $is_default_placeholder = ($empty_label === NULL && str_starts_with($label, '--')); |
| 122 | if ($is_default_placeholder) { |
| 123 | $empty_label = trim(substr($label, 2)); |
| 124 | continue; |
| 125 | } |
| 126 | $clean_options[] = $label; |
| 127 | } |
| 128 | |
| 129 | $normalized = []; |
| 130 | foreach ($clean_options as $label) { |
| 131 | $normalized[$label] = $label; |
| 132 | } |
| 133 | |
| 134 | return [$normalized, $empty_label]; |
| 135 | } |
| 136 | |
| 137 | /** |
| 138 | * Applies input-specific properties for a component element. |
| 139 | * |
| 140 | * @param array $element |
| 141 | * Component render array. |
| 142 | * @param array $component |
| 143 | * Component definition. |
| 144 | * |
| 145 | * @return array |
| 146 | * Updated render array. |
| 147 | */ |
| 148 | private static function applyComponentInput(array $element, array $component): array { |
| 149 | if ($component['type'] == 'select') { |
| 150 | return self::applySelectInput($element, $component); |
| 151 | } |
| 152 | |
| 153 | if (!empty($component['autocomplete'])) { |
| 154 | $element += $component['autocomplete']; |
| 155 | } |
| 156 | |
| 157 | return $element; |
| 158 | } |
| 159 | |
| 160 | /** |
| 161 | * Applies select-specific properties for a component element. |
| 162 | * |
| 163 | * @param array $element |
| 164 | * Component render array. |
| 165 | * @param array $component |
| 166 | * Component definition. |
| 167 | * |
| 168 | * @return array |
| 169 | * Updated render array. |
| 170 | */ |
| 171 | private static function applySelectInput(array $element, array $component): array { |
| 172 | $element['#options'] = $component['options']; |
| 173 | $element['#size'] = 1; |
| 174 | |
| 175 | $has_select_options = !empty($element['#options']) && is_array($element['#options']); |
| 176 | if (!$has_select_options) { |
| 177 | return $element; |
| 178 | } |
| 179 | |
| 180 | [$normalized, $empty_label] = self::normalizeSelectOptions($element['#options']); |
| 181 | if ($empty_label !== NULL) { |
| 182 | $element['#empty_value'] = '_none'; |
| 183 | $element['#empty_option'] = $empty_label !== '' ? $empty_label : '--'; |
| 184 | } |
| 185 | $element['#options'] = $normalized; |
| 186 | |
| 187 | return $element; |
| 188 | } |
| 189 | |
| 190 | /** |
| 191 | * Resolves required marker and required input flags. |
| 192 | * |
| 193 | * @param bool $core |
| 194 | * Whether the component is a required core part. |
| 195 | * @param array $base_element |
| 196 | * Base form element. |
| 197 | * |
| 198 | * @return array |
| 199 | * Marker and required flags. |
| 200 | */ |
| 201 | private static function resolveRequiredFlags(bool $core, array $base_element): array { |
| 202 | $has_field_parents = isset($base_element['#field_parents']) |
| 203 | && is_array($base_element['#field_parents']) |
| 204 | && !in_array('default_value_input', $base_element['#field_parents'], TRUE); |
| 205 | $required_context = $core |
| 206 | && !empty($base_element['#required']) |
| 207 | && $has_field_parents; |
| 208 | |
| 209 | return [ |
| 210 | 'show_marker' => $required_context |
| 211 | && !empty($base_element['#show_component_required_marker']), |
| 212 | 'flag_required' => $required_context |
| 213 | && !empty($base_element['#flag_required_input']), |
| 214 | ]; |
| 215 | } |
| 216 | |
| 217 | /** |
| 218 | * Applies title display configuration and required metadata. |
| 219 | * |
| 220 | * @param array $element |
| 221 | * Component render array. |
| 222 | * @param string $title_display |
| 223 | * Title display mode. |
| 224 | * @param bool $required_marker |
| 225 | * Whether to show required marker styling. |
| 226 | * @param bool $flag_required_input |
| 227 | * Whether to mark the field as required. |
| 228 | * |
| 229 | * @return array |
| 230 | * Updated render array. |
| 231 | */ |
| 232 | private static function applyTitleDisplay( |
| 233 | array $element, |
| 234 | string $title_display, |
| 235 | bool $required_marker, |
| 236 | bool $flag_required_input, |
| 237 | ): array { |
| 238 | return match ($title_display) { |
| 239 | 'title' => self::applyTitleDisplayAsTitle($element, $required_marker, $flag_required_input), |
| 240 | 'placeholder' => self::applyTitleDisplayAsPlaceholder($element, $required_marker, $flag_required_input), |
| 241 | 'none' => self::applyTitleDisplayAsNone($element, $flag_required_input), |
| 242 | 'attribute' => self::applyTitleDisplayAsAttribute($element, $required_marker), |
| 243 | default => self::applyTitleDisplayAsDescription($element, $required_marker, $flag_required_input), |
| 244 | }; |
| 245 | } |
| 246 | |
| 247 | /** |
| 248 | * Applies "title" display behavior. |
| 249 | */ |
| 250 | private static function applyTitleDisplayAsTitle( |
| 251 | array $element, |
| 252 | bool $required_marker, |
| 253 | bool $flag_required_input, |
| 254 | ): array { |
| 255 | $element['#title_display'] = 'before'; |
| 256 | $element = self::setRequiredWhenFlag($element, $flag_required_input); |
| 257 | |
| 258 | if ($required_marker) { |
| 259 | $element['#label_attributes']['class'][] = 'js-form-required'; |
| 260 | $element['#label_attributes']['class'][] = 'form-required'; |
| 261 | } |
| 262 | |
| 263 | return $element; |
| 264 | } |
| 265 | |
| 266 | /** |
| 267 | * Applies "placeholder" display behavior. |
| 268 | */ |
| 269 | private static function applyTitleDisplayAsPlaceholder( |
| 270 | array $element, |
| 271 | bool $required_marker, |
| 272 | bool $flag_required_input, |
| 273 | ): array { |
| 274 | $element['#attributes']['placeholder'] = self::appendRequiredSuffix( |
| 275 | (string) $element['#title'], |
| 276 | $required_marker, |
| 277 | ); |
| 278 | $element = self::setRequiredWhenFlag($element, $flag_required_input); |
| 279 | $element['#title_display'] = 'invisible'; |
| 280 | |
| 281 | return $element; |
| 282 | } |
| 283 | |
| 284 | /** |
| 285 | * Applies "none" display behavior. |
| 286 | */ |
| 287 | private static function applyTitleDisplayAsNone( |
| 288 | array $element, |
| 289 | bool $flag_required_input, |
| 290 | ): array { |
| 291 | $element['#title_display'] = 'invisible'; |
| 292 | $element = self::setRequiredWhenFlag($element, $flag_required_input); |
| 293 | |
| 294 | return $element; |
| 295 | } |
| 296 | |
| 297 | /** |
| 298 | * Applies "attribute" display behavior. |
| 299 | */ |
| 300 | private static function applyTitleDisplayAsAttribute( |
| 301 | array $element, |
| 302 | bool $required_marker, |
| 303 | ): array { |
| 304 | $element['#title_display'] = 'attribute'; |
| 305 | $element['#attributes']['title'] = self::appendRequiredSuffix( |
| 306 | (string) $element['#title'], |
| 307 | $required_marker, |
| 308 | ); |
| 309 | |
| 310 | return $element; |
| 311 | } |
| 312 | |
| 313 | /** |
| 314 | * Applies default "description" display behavior. |
| 315 | */ |
| 316 | private static function applyTitleDisplayAsDescription( |
| 317 | array $element, |
| 318 | bool $required_marker, |
| 319 | bool $flag_required_input, |
| 320 | ): array { |
| 321 | $element['#title_display'] = 'invisible'; |
| 322 | $element['#required'] = $flag_required_input; |
| 323 | $element['#description'] = [ |
| 324 | '#theme' => 'form_element_label', |
| 325 | '#title' => $element['#title'], |
| 326 | '#required' => $required_marker, |
| 327 | '#title_display' => 'before', |
| 328 | ]; |
| 329 | // Keep the callback target on Name for backwards compatibility. |
| 330 | $element['#after_build'][] = [Name::class, 'componentDescriptionAfterBuildLabelAlter']; |
| 331 | |
| 332 | return $element; |
| 333 | } |
| 334 | |
| 335 | /** |
| 336 | * Sets #required when required-input flag is enabled. |
| 337 | */ |
| 338 | private static function setRequiredWhenFlag(array $element, bool $flag_required_input): array { |
| 339 | if ($flag_required_input) { |
| 340 | $element['#required'] = TRUE; |
| 341 | } |
| 342 | |
| 343 | return $element; |
| 344 | } |
| 345 | |
| 346 | /** |
| 347 | * Appends the required marker text when needed. |
| 348 | */ |
| 349 | private static function appendRequiredSuffix(string $label, bool $required_marker): string { |
| 350 | if ($required_marker) { |
| 351 | return $label . ' (' . t('Required') . ')'; |
| 352 | } |
| 353 | |
| 354 | return $label; |
| 355 | } |
| 356 | |
| 357 | } |