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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Cosray\Value; |
| 6 | |
| 7 | use Closure; |
| 8 | use Cosray\Block\Layout; |
| 9 | use Cosray\Block\RenderContext; |
| 10 | use Cosray\Contract\Block as BlockType; |
| 11 | use Cosray\Exception\NoSuchProperty; |
| 12 | use Cosray\Field; |
| 13 | use Cosray\Markup; |
| 14 | use Override; |
| 15 | |
| 16 | use function Cosray\escape; |
| 17 | |
| 18 | /** |
| 19 | * One row of a Blocks field: its type, grid placement, block meta and |
| 20 | * the type's fields, reachable as properties like on an entry. A split |
| 21 | * has no type and no fields; it holds blocks laid out on its own area. |
| 22 | * |
| 23 | * @property-read Field\Blocks $field |
| 24 | */ |
| 25 | class Block extends Value |
| 26 | { |
| 27 | /** @var array<string, Field\Field> */ |
| 28 | protected array $fields = []; |
| 29 | |
| 30 | /** @var list<Block> */ |
| 31 | protected array $blocks = []; |
| 32 | |
| 33 | protected readonly Layout $layout; |
| 34 | |
| 35 | /** The field grid's column count, which a split's blocks share. */ |
| 36 | protected readonly int $columns; |
| 37 | |
| 38 | /** |
| 39 | * @param class-string<BlockType>|null $type null for a split |
| 40 | * @param ?Layout $area the split a block sits in, which bounds its layout |
| 41 | * @param ?int $columns the grid's column count, the field's default without one |
| 42 | */ |
| 43 | public function __construct( |
| 44 | Field\Owner $owner, |
| 45 | Field\Blocks $field, |
| 46 | ValueContext $context, |
| 47 | public readonly ?string $type, |
| 48 | ?Layout $area = null, |
| 49 | ?int $columns = null, |
| 50 | ) { |
| 51 | parent::__construct($owner, $field, $context); |
| 52 | |
| 53 | $this->columns = $columns ?? $field->getColumns(); |
| 54 | $min = $field->minOf($this->columns); |
| 55 | $this->layout = $area === null |
| 56 | ? Layout::normalize($this->data['layout'] ?? null, $this->columns, $min) |
| 57 | : Layout::normalize($this->data['layout'] ?? null, $area->colspan, $min, $area->rowspan); |
| 58 | |
| 59 | if ($type !== null) { |
| 60 | $data = $this->data['fields'] ?? []; |
| 61 | $this->fields = $field->blockFieldsFor($type, is_array($data) ? $data : []); |
| 62 | |
| 63 | return; |
| 64 | } |
| 65 | |
| 66 | foreach (is_array($this->data['blocks'] ?? null) ? $this->data['blocks'] : [] as $row) { |
| 67 | $childType = is_array($row) ? $row['type'] ?? null : null; |
| 68 | |
| 69 | if (is_string($childType) && $field->allows($childType)) { |
| 70 | $this->blocks[] = new self( |
| 71 | $owner, |
| 72 | $field, |
| 73 | new ValueContext($this->fieldName, $row), |
| 74 | $childType, |
| 75 | $this->layout, |
| 76 | $this->columns, |
| 77 | ); |
| 78 | } |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | #[Override] |
| 83 | public function __toString(): string |
| 84 | { |
| 85 | return (string) $this->render(); |
| 86 | } |
| 87 | |
| 88 | public function uid(): ?string |
| 89 | { |
| 90 | $uid = $this->data['uid'] ?? null; |
| 91 | |
| 92 | return is_string($uid) ? $uid : null; |
| 93 | } |
| 94 | |
| 95 | /** The type's `data-type` value; a split has none. */ |
| 96 | public function handle(): ?string |
| 97 | { |
| 98 | return $this->type === null ? null : $this->field->blockHandle($this->type); |
| 99 | } |
| 100 | |
| 101 | public function layout(): Layout |
| 102 | { |
| 103 | return $this->layout; |
| 104 | } |
| 105 | |
| 106 | public function isSplit(): bool |
| 107 | { |
| 108 | return $this->type === null; |
| 109 | } |
| 110 | |
| 111 | /** @return list<Block> a split's blocks in reading order, empty for a block */ |
| 112 | public function blocks(): array |
| 113 | { |
| 114 | return $this->blocks; |
| 115 | } |
| 116 | |
| 117 | /** |
| 118 | * `columns` when a split's blocks sit side by side, `rows` when they |
| 119 | * are stacked, read off the blocks since the direction is not stored. |
| 120 | */ |
| 121 | public function split(): ?string |
| 122 | { |
| 123 | if ($this->blocks === []) { |
| 124 | return null; |
| 125 | } |
| 126 | |
| 127 | return $this->blocks[0]->layout->colspan < $this->layout->colspan ? 'columns' : 'rows'; |
| 128 | } |
| 129 | |
| 130 | /** A block-level meta entry, such as `class` or `id`. */ |
| 131 | #[Override] |
| 132 | public function meta(string $key, mixed $default = null): mixed |
| 133 | { |
| 134 | return parent::meta($key, $default); |
| 135 | } |
| 136 | |
| 137 | /** The block's padding as a spacing token, `null` for the site's default. */ |
| 138 | public function padding(): ?string |
| 139 | { |
| 140 | $value = $this->meta('padding'); |
| 141 | |
| 142 | return is_string($value) && in_array($value, Field\Blocks::SPACING, true) ? $value : null; |
| 143 | } |
| 144 | |
| 145 | /** @return array<string, mixed> with the block type's handle as `type`, null for a split */ |
| 146 | #[Override] |
| 147 | public function json(): array |
| 148 | { |
| 149 | $json = $this->resolve(static fn(Value $value): mixed => $value->json()); |
| 150 | $json['type'] = $json['handle']; |
| 151 | unset($json['handle']); |
| 152 | |
| 153 | return $json; |
| 154 | } |
| 155 | |
| 156 | /** @return array<string, mixed> */ |
| 157 | #[Override] |
| 158 | public function raw(): array |
| 159 | { |
| 160 | return $this->resolve(static fn(Value $value): mixed => $value->raw()); |
| 161 | } |
| 162 | |
| 163 | #[Override] |
| 164 | public function isset(): bool |
| 165 | { |
| 166 | return $this->type === null ? $this->blocks !== [] : count($this->fields) > 0; |
| 167 | } |
| 168 | |
| 169 | #[Override] |
| 170 | public function __get(string $name): mixed |
| 171 | { |
| 172 | if (isset($this->fields[$name])) { |
| 173 | return $this->fields[$name]->value(); |
| 174 | } |
| 175 | |
| 176 | throw new NoSuchProperty("Block doesn't have field '{$name}'"); |
| 177 | } |
| 178 | |
| 179 | /** |
| 180 | * This block alone, wrapper element included. Supports the same |
| 181 | * arguments as `Blocks::render()`. |
| 182 | */ |
| 183 | public function render(mixed ...$args): Markup |
| 184 | { |
| 185 | $ctx = new RenderContext($this->owner, $this->fieldName, $this->columns, $args); |
| 186 | |
| 187 | return new Markup($this->renderWith($ctx, $this->field->services()->blocks->cached($this->owner))); |
| 188 | } |
| 189 | |
| 190 | /** |
| 191 | * The rendering contract: `{prefix}-block` plus the meta class, the |
| 192 | * meta id, `data-type` — or `data-split` for a split, whose blocks |
| 193 | * follow inside —, the layout as data attributes and custom |
| 194 | * properties, then the type's output. An empty output emits no |
| 195 | * element, so a block whose asset is gone leaves no grid cell. |
| 196 | * |
| 197 | * @param Closure(class-string<BlockType>): BlockType $types |
| 198 | */ |
| 199 | public function renderWith(RenderContext $ctx, Closure $types): string |
| 200 | { |
| 201 | if ($this->type === null) { |
| 202 | $inner = ''; |
| 203 | |
| 204 | foreach ($this->blocks as $block) { |
| 205 | $inner .= $block->renderWith($ctx, $types); |
| 206 | } |
| 207 | } else { |
| 208 | $inner = $types($this->type)->render($this, $ctx); |
| 209 | } |
| 210 | |
| 211 | if ($inner === '') { |
| 212 | return ''; |
| 213 | } |
| 214 | |
| 215 | $class = $ctx->prefix() . '-block'; |
| 216 | $styleClass = $this->styleClass(); |
| 217 | |
| 218 | if ($styleClass !== null) { |
| 219 | $class .= ' ' . $styleClass; |
| 220 | } |
| 221 | |
| 222 | $attributes = ' class="' . escape($class) . '"'; |
| 223 | $id = $this->elementId(); |
| 224 | |
| 225 | if ($id !== null) { |
| 226 | $attributes .= ' id="' . escape($id) . '"'; |
| 227 | } |
| 228 | |
| 229 | $attributes .= $this->type === null |
| 230 | ? ' data-split="' . escape((string) $this->split()) . '"' |
| 231 | : ' data-type="' . escape((string) $this->handle()) . '"'; |
| 232 | $layout = $this->layout; |
| 233 | // A block on the field's grid carries the lines it starts at; the |
| 234 | // blocks of a split follow each other on its area. |
| 235 | $position = $layout->placed() ? " data-col=\"{$layout->col}\" data-row=\"{$layout->row}\"" : ''; |
| 236 | $style = |
| 237 | "--colspan: {$layout->colspan}; --rowspan: {$layout->rowspan}" |
| 238 | . ($layout->placed() ? "; --col: {$layout->col}; --row: {$layout->row}" : ''); |
| 239 | $attributes .= |
| 240 | " data-colspan=\"{$layout->colspan}\" data-rowspan=\"{$layout->rowspan}\"{$position}" |
| 241 | . ($this->padding() !== null ? ' data-padding="' . escape((string) $this->padding()) . '"' : '') |
| 242 | . " style=\"{$style}\""; |
| 243 | |
| 244 | return "<div{$attributes}>{$inner}</div>"; |
| 245 | } |
| 246 | |
| 247 | /** |
| 248 | * @param callable(Value): mixed $resolve |
| 249 | * @return array{uid: ?string, type: ?string, handle: ?string, layout: array{colspan: int, rowspan: int, col?: int, row?: int}, fields?: array<string, mixed>, blocks?: list<array<string, mixed>>, meta: array<mixed>} |
| 250 | */ |
| 251 | private function resolve(callable $resolve): array |
| 252 | { |
| 253 | $meta = $this->data['meta'] ?? []; |
| 254 | $result = [ |
| 255 | 'uid' => $this->uid(), |
| 256 | 'type' => $this->type, |
| 257 | 'handle' => $this->handle(), |
| 258 | 'layout' => $this->layout->array(), |
| 259 | ]; |
| 260 | |
| 261 | if ($this->type === null) { |
| 262 | $result['blocks'] = array_map(static fn(Block $block): array => $block->resolve($resolve), $this->blocks); |
| 263 | } else { |
| 264 | $result['fields'] = array_map(static fn(Field\Field $field): mixed => $resolve( |
| 265 | $field->value(), |
| 266 | ), $this->fields); |
| 267 | } |
| 268 | |
| 269 | $result['meta'] = is_array($meta) ? $meta : []; |
| 270 | |
| 271 | return $result; |
| 272 | } |
| 273 | } |