# Worked extension examples

These developer-facing recipes are kept beside the package contract. Replace the example values with the site-specific records and data objects used by the calling workflow.

<!-- example: contract Capell\LayoutBuilder\Contracts\Assets\PublicLayoutWidgetAssetsRenderer -->

```php
<?php
declare(strict_types=1);
final class ExamplePublicLayoutWidgetAssetsRendererImplementation implements \Capell\LayoutBuilder\Contracts\Assets\PublicLayoutWidgetAssetsRenderer
{
    /**
     * @param  array<string, mixed>  $widgetData
     * @param  array<string, mixed>  $options
     */
    public function render(mixed $widget, string $containerKey, array $widgetData = [], mixed $widgetAssets = null, mixed $widgetAssetsByWidget = null, array $options = []): string
    {
        throw new LogicException('Implement this package contract for the calling site.');
    }
}

app()->bind(\Capell\LayoutBuilder\Contracts\Assets\PublicLayoutWidgetAssetsRenderer::class, ExamplePublicLayoutWidgetAssetsRendererImplementation::class);
```

<!-- example: contract Capell\LayoutBuilder\Contracts\Extenders\LayoutContainerSchemaExtender -->

```php
<?php
declare(strict_types=1);
final class ExampleLayoutContainerSchemaExtenderImplementation implements \Capell\LayoutBuilder\Contracts\Extenders\LayoutContainerSchemaExtender
{
    public function themeKey(): string
    {
        throw new LogicException('Implement this package contract for the calling site.');
    }
    public function themeLabel(): string
    {
        throw new LogicException('Implement this package contract for the calling site.');
    }
    public function supports(\Capell\LayoutBuilder\Data\LayoutContainerSchemaContextData $context): bool
    {
        throw new LogicException('Implement this package contract for the calling site.');
    }
    /**
     * @return array<int, Htmlable>
     */
    public function extendContainerComponents(\Filament\Schemas\Schema $schema, \Capell\LayoutBuilder\Data\LayoutContainerSchemaContextData $context): array
    {
        throw new LogicException('Implement this package contract for the calling site.');
    }
}

app()->bind(\Capell\LayoutBuilder\Contracts\Extenders\LayoutContainerSchemaExtender::class, ExampleLayoutContainerSchemaExtenderImplementation::class);
```

<!-- example: contract Capell\LayoutBuilder\Contracts\Extenders\WidgetAssetSchemaExtender -->

```php
<?php
declare(strict_types=1);
final class ExampleWidgetAssetSchemaExtenderImplementation implements \Capell\LayoutBuilder\Contracts\Extenders\WidgetAssetSchemaExtender
{
    /**
     * @param  array<int, mixed>  $components
     * @return array<int, mixed>
     */
    public function extendAssetComponents(\Filament\Schemas\Schema $schema, array $components): array
    {
        throw new LogicException('Implement this package contract for the calling site.');
    }
    /**
     * @param  array<int, mixed>  $components
     * @return array<int, mixed>
     */
    public function extendRepeaterComponents(array $components): array
    {
        throw new LogicException('Implement this package contract for the calling site.');
    }
}

app()->bind(\Capell\LayoutBuilder\Contracts\Extenders\WidgetAssetSchemaExtender::class, ExampleWidgetAssetSchemaExtenderImplementation::class);
```

<!-- example: contract Capell\LayoutBuilder\Contracts\Extenders\WidgetSchemaExtender -->

```php
<?php
declare(strict_types=1);
final class ExampleWidgetSchemaExtenderImplementation implements \Capell\LayoutBuilder\Contracts\Extenders\WidgetSchemaExtender
{
    /**
     * @param  array<int, mixed>  $components
     * @return array<int, mixed>
     */
    public function extendDisplayComponents(\Filament\Schemas\Schema $schema, array $components): array
    {
        throw new LogicException('Implement this package contract for the calling site.');
    }
}

app()->bind(\Capell\LayoutBuilder\Contracts\Extenders\WidgetSchemaExtender::class, ExampleWidgetSchemaExtenderImplementation::class);
```

<!-- example: contract Capell\LayoutBuilder\Contracts\LayoutContainerThemePresentationProjector -->

```php
<?php
declare(strict_types=1);
final class ExampleLayoutContainerThemePresentationProjectorImplementation implements \Capell\LayoutBuilder\Contracts\LayoutContainerThemePresentationProjector
{
    public function themeKey(): string
    {
        throw new LogicException('Implement this package contract for the calling site.');
    }
    /**
     * @param  array<string, mixed>  $state
     */
    public function project(array $state): \Capell\LayoutBuilder\Data\LayoutContainerThemePresentationData
    {
        throw new LogicException('Implement this package contract for the calling site.');
    }
}

app()->bind(\Capell\LayoutBuilder\Contracts\LayoutContainerThemePresentationProjector::class, ExampleLayoutContainerThemePresentationProjectorImplementation::class);
```

<!-- example: contract Capell\LayoutBuilder\Contracts\LayoutContentGroupContributor -->

```php
<?php
declare(strict_types=1);
final class ExampleLayoutContentGroupContributorImplementation implements \Capell\LayoutBuilder\Contracts\LayoutContentGroupContributor
{
    public function priority(): int
    {
        throw new LogicException('Implement this package contract for the calling site.');
    }
    public function group(\Capell\LayoutBuilder\Data\LayoutContentGroupData $group, \Capell\LayoutBuilder\Data\LayoutContentInventoryContextData $context): \Capell\LayoutBuilder\Data\LayoutContentGroupData
    {
        throw new LogicException('Implement this package contract for the calling site.');
    }
    public function item(\Capell\LayoutBuilder\Data\LayoutContentItemData $item, \Capell\LayoutBuilder\Data\LayoutContentInventoryContextData $context): \Capell\LayoutBuilder\Data\LayoutContentItemData
    {
        throw new LogicException('Implement this package contract for the calling site.');
    }
    /**
     * @return array<int, string>
     */
    public function eagerLoads(): array
    {
        throw new LogicException('Implement this package contract for the calling site.');
    }
    /**
     * @return array<int, string>
     */
    public function cacheDependencies(): array
    {
        throw new LogicException('Implement this package contract for the calling site.');
    }
}

app()->bind(\Capell\LayoutBuilder\Contracts\LayoutContentGroupContributor::class, ExampleLayoutContentGroupContributorImplementation::class);
```

<!-- example: contract Capell\LayoutBuilder\Contracts\LayoutSidebarWidgetContributor -->

```php
<?php
declare(strict_types=1);
final class ExampleLayoutSidebarWidgetContributorImplementation implements \Capell\LayoutBuilder\Contracts\LayoutSidebarWidgetContributor
{
    /**
     * @return array<int, LayoutSidebarWidgetData>
     */
    public function sidebarWidgets(): array
    {
        throw new LogicException('Implement this package contract for the calling site.');
    }
}

app()->bind(\Capell\LayoutBuilder\Contracts\LayoutSidebarWidgetContributor::class, ExampleLayoutSidebarWidgetContributorImplementation::class);
```

<!-- example: contract Capell\LayoutBuilder\Contracts\PublicLayoutWidgetPayloadContributor -->

```php
<?php
declare(strict_types=1);
final class ExamplePublicLayoutWidgetPayloadContributorImplementation implements \Capell\LayoutBuilder\Contracts\PublicLayoutWidgetPayloadContributor
{
    public function priority(): int
    {
        throw new LogicException('Implement this package contract for the calling site.');
    }
    /**
     * @return array<string, mixed>
     */
    public function data(\Capell\LayoutBuilder\Models\Widget $widget, \Capell\Core\Models\Page $page, \Capell\Core\Models\Language $language, string $containerKey, int $occurrence): array
    {
        throw new LogicException('Implement this package contract for the calling site.');
    }
    public function html(\Capell\LayoutBuilder\Models\Widget $widget, \Capell\Core\Models\Page $page, \Capell\Core\Models\Language $language, string $containerKey, int $occurrence): ?string
    {
        throw new LogicException('Implement this package contract for the calling site.');
    }
}

app()->bind(\Capell\LayoutBuilder\Contracts\PublicLayoutWidgetPayloadContributor::class, ExamplePublicLayoutWidgetPayloadContributorImplementation::class);
```

<!-- example: contract Capell\LayoutBuilder\Contracts\PublicLayoutWidgetPayloadResolver -->

```php
<?php
declare(strict_types=1);
final class ExamplePublicLayoutWidgetPayloadResolverImplementation implements \Capell\LayoutBuilder\Contracts\PublicLayoutWidgetPayloadResolver
{
    /**
     * @return array<string, mixed>
     */
    public function data(\Capell\LayoutBuilder\Models\Widget $widget, \Capell\Core\Models\Page $page, \Capell\Core\Models\Language $language, string $containerKey, int $occurrence): array
    {
        throw new LogicException('Implement this package contract for the calling site.');
    }
    public function html(\Capell\LayoutBuilder\Models\Widget $widget, \Capell\Core\Models\Page $page, \Capell\Core\Models\Language $language, string $containerKey, int $occurrence): ?string
    {
        throw new LogicException('Implement this package contract for the calling site.');
    }
}

app()->bind(\Capell\LayoutBuilder\Contracts\PublicLayoutWidgetPayloadResolver::class, ExamplePublicLayoutWidgetPayloadResolverImplementation::class);
```

<!-- example: contract Capell\LayoutBuilder\Contracts\WidgetAssetReferenceRepointer -->

```php
<?php
declare(strict_types=1);
final class ExampleWidgetAssetReferenceRepointerImplementation implements \Capell\LayoutBuilder\Contracts\WidgetAssetReferenceRepointer
{
    public function repoint(\Illuminate\Database\Eloquent\Model $asset, int|string $fromAssetId, int|string $toAssetId): int
    {
        throw new LogicException('Implement this package contract for the calling site.');
    }
}

app()->bind(\Capell\LayoutBuilder\Contracts\WidgetAssetReferenceRepointer::class, ExampleWidgetAssetReferenceRepointerImplementation::class);
```

<!-- example: contract Capell\LayoutBuilder\Contracts\WidgetExtensions\WidgetExtensionBatchPayloadResolver -->

```php
<?php
declare(strict_types=1);
final class ExampleWidgetExtensionBatchPayloadResolverImplementation implements \Capell\LayoutBuilder\Contracts\WidgetExtensions\WidgetExtensionBatchPayloadResolver
{
    /**
     * Resolve public payloads for a batch keyed by opaque widget instance ID.
     *
     * @return array<string, Data>
     */
    public function resolve(\Capell\LayoutBuilder\Data\WidgetExtensions\WidgetExtensionPayloadBatchData $batch): array
    {
        throw new LogicException('Implement this package contract for the calling site.');
    }
}

app()->bind(\Capell\LayoutBuilder\Contracts\WidgetExtensions\WidgetExtensionBatchPayloadResolver::class, ExampleWidgetExtensionBatchPayloadResolverImplementation::class);
```

<!-- example: contract Capell\LayoutBuilder\Contracts\WidgetExtensions\WidgetExtensionDependencyResolver -->

```php
<?php
declare(strict_types=1);
final class ExampleWidgetExtensionDependencyResolverImplementation implements \Capell\LayoutBuilder\Contracts\WidgetExtensions\WidgetExtensionDependencyResolver
{
    /**
     * Resolve stable content-graph dependency identifiers such as `media:123`.
     *
     * @return list<string>
     */
    public function resolve(\Spatie\LaravelData\Data $input): array
    {
        throw new LogicException('Implement this package contract for the calling site.');
    }
}

app()->bind(\Capell\LayoutBuilder\Contracts\WidgetExtensions\WidgetExtensionDependencyResolver::class, ExampleWidgetExtensionDependencyResolverImplementation::class);
```

<!-- example: contract Capell\LayoutBuilder\Contracts\WidgetExtensions\WidgetExtensionStateUpcaster -->

```php
<?php
declare(strict_types=1);
final class ExampleWidgetExtensionStateUpcasterImplementation implements \Capell\LayoutBuilder\Contracts\WidgetExtensions\WidgetExtensionStateUpcaster
{
    /**
     * @param  array<string, mixed>  $state
     * @return array<string, mixed>
     */
    public function upcast(array $state, int $fromVersion, int $toVersion): array
    {
        throw new LogicException('Implement this package contract for the calling site.');
    }
}

app()->bind(\Capell\LayoutBuilder\Contracts\WidgetExtensions\WidgetExtensionStateUpcaster::class, ExampleWidgetExtensionStateUpcasterImplementation::class);
```

<!-- example: contract Capell\LayoutBuilder\Contracts\WidgetSnapshots\WidgetSnapshotLocatorCipher -->

```php
<?php
declare(strict_types=1);
final class ExampleWidgetSnapshotLocatorCipherImplementation implements \Capell\LayoutBuilder\Contracts\WidgetSnapshots\WidgetSnapshotLocatorCipher
{
    public function encrypt(string $plaintext): string
    {
        throw new LogicException('Implement this package contract for the calling site.');
    }
    public function decrypt(string $ciphertext): string
    {
        throw new LogicException('Implement this package contract for the calling site.');
    }
}

app()->bind(\Capell\LayoutBuilder\Contracts\WidgetSnapshots\WidgetSnapshotLocatorCipher::class, ExampleWidgetSnapshotLocatorCipherImplementation::class);
```

<!-- example: action install -->

```php
<?php
declare(strict_types=1);
$inputs = []; // Supply the arguments required by the action handle() method.
resolve(\Capell\LayoutBuilder\Actions\InstallLayoutBuilderPackageAction::class)->handle(...$inputs);
```

<!-- example: action pruneLayoutBulkChangeRuns -->

```php
<?php
declare(strict_types=1);
$inputs = []; // Supply the arguments required by the action handle() method.
resolve(\Capell\LayoutBuilder\Actions\PruneLayoutBulkChangeRunsAction::class)->handle(...$inputs);
```

<!-- example: action setup -->

```php
<?php
declare(strict_types=1);
$inputs = []; // Supply the arguments required by the action handle() method.
resolve(\Capell\LayoutBuilder\Actions\SetupLayoutBuilderPackageAction::class)->handle(...$inputs);
```