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AbstractCursorPaginator...	14.852KB	edt ren
AbstractPaginator.php	16.162KB	edt ren
Cursor.php	3.181KB	edt ren
CursorPaginationExcepti...	0.195KB	edt ren
CursorPaginator.php	4.156KB	edt ren
LICENSE.md	1.05KB	edt ren
LengthAwarePaginator.php	6.054KB	edt ren
PaginationServiceProvid...	0.723KB	edt ren
PaginationState.php	1.146KB	edt ren
Paginator.php	4.293KB	edt ren
UrlWindow.php	5.591KB	edt ren
composer.json	0.878KB	edt ren

<?php

namespace Illuminate\Pagination;

use ArrayAccess;
use Closure;
use Exception;
use Illuminate\Contracts\Support\Htmlable;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\Pivot;
use Illuminate\Http\Resources\Json\JsonResource;
use Illuminate\Support\Arr;
use Illuminate\Support\Collection;
use Illuminate\Support\Str;
use Illuminate\Support\Traits\ForwardsCalls;
use Illuminate\Support\Traits\Tappable;

/**
 * @mixin \Illuminate\Support\Collection
 */
abstract class AbstractCursorPaginator implements Htmlable
{
    use ForwardsCalls, Tappable;

/**
     * All of the items being paginated.
     *
     * @var \Illuminate\Support\Collection
     */
    protected $items;

/**
     * The number of items to be shown per page.
     *
     * @var int
     */
    protected $perPage;

/**
     * The base path to assign to all URLs.
     *
     * @var string
     */
    protected $path = '/';

/**
     * The query parameters to add to all URLs.
     *
     * @var array
     */
    protected $query = [];

/**
     * The URL fragment to add to all URLs.
     *
     * @var string|null
     */
    protected $fragment;

/**
     * The cursor string variable used to store the page.
     *
     * @var string
     */
    protected $cursorName = 'cursor';

/**
     * The current cursor.
     *
     * @var \Illuminate\Pagination\Cursor|null
     */
    protected $cursor;

/**
     * The paginator parameters for the cursor.
     *
     * @var array
     */
    protected $parameters;

/**
     * The paginator options.
     *
     * @var array
     */
    protected $options;

/**
     * The current cursor resolver callback.
     *
     * @var \Closure
     */
    protected static $currentCursorResolver;

/**
     * Get the URL for a given cursor.
     *
     * @param  \Illuminate\Pagination\Cursor|null  $cursor
     * @return string
     */
    public function url($cursor)
    {
        // If we have any extra query string key / value pairs that need to be added
        // onto the URL, we will put them in query string form and then attach it
        // to the URL. This allows for extra information like sortings storage.
        $parameters = is_null($cursor) ? [] : [$this->cursorName => $cursor->encode()];

if (count($this->query) > 0) {
            $parameters = array_merge($this->query, $parameters);
        }

return $this->path()
            .(Str::contains($this->path(), '?') ? '&' : '?')
            .Arr::query($parameters)
            .$this->buildFragment();
    }

/**
     * Get the URL for the previous page.
     *
     * @return string|null
     */
    public function previousPageUrl()
    {
        if (is_null($previousCursor = $this->previousCursor())) {
            return null;
        }

return $this->url($previousCursor);
    }

/**
     * The URL for the next page, or null.
     *
     * @return string|null
     */
    public function nextPageUrl()
    {
        if (is_null($nextCursor = $this->nextCursor())) {
            return null;
        }

return $this->url($nextCursor);
    }

/**
     * Get the "cursor" that points to the previous set of items.
     *
     * @return \Illuminate\Pagination\Cursor|null
     */
    public function previousCursor()
    {
        if (is_null($this->cursor) ||
            ($this->cursor->pointsToPreviousItems() && ! $this->hasMore)) {
            return null;
        }

return $this->getCursorForItem($this->items->first(), false);
    }

/**
     * Get the "cursor" that points to the next set of items.
     *
     * @return \Illuminate\Pagination\Cursor|null
     */
    public function nextCursor()
    {
        if ((is_null($this->cursor) && ! $this->hasMore) ||
            (! is_null($this->cursor) && $this->cursor->pointsToNextItems() && ! $this->hasMore)) {
            return null;
        }

return $this->getCursorForItem($this->items->last(), true);
    }

/**
     * Get a cursor instance for the given item.
     *
     * @param  \ArrayAccess|\stdClass  $item
     * @param  bool  $isNext
     * @return \Illuminate\Pagination\Cursor
     */
    public function getCursorForItem($item, $isNext = true)
    {
        return new Cursor($this->getParametersForItem($item), $isNext);
    }

/**
     * Get the cursor parameters for a given object.
     *
     * @param  \ArrayAccess|\stdClass  $item
     * @return array
     *
     * @throws \Exception
     */
    public function getParametersForItem($item)
    {
        return collect($this->parameters)
            ->flip()
            ->map(function ($_, $parameterName) use ($item) {
                if ($item instanceof JsonResource) {
                    $item = $item->resource;
                }

if ($item instanceof Model &&
                    ! is_null($parameter = $this->getPivotParameterForItem($item, $parameterName))) {
                    return $parameter;
                } elseif ($item instanceof ArrayAccess || is_array($item)) {
                    return $this->ensureParameterIsPrimitive(
                        $item[$parameterName] ?? $item[Str::afterLast($parameterName, '.')]
                    );
                } elseif (is_object($item)) {
                    return $this->ensureParameterIsPrimitive(
                        $item->{$parameterName} ?? $item->{Str::afterLast($parameterName, '.')}
                    );
                }

throw new Exception('Only arrays and objects are supported when cursor paginating items.');
            })->toArray();
    }

/**
     * Get the cursor parameter value from a pivot model if applicable.
     *
     * @param  \ArrayAccess|\stdClass  $item
     * @param  string  $parameterName
     * @return string|null
     */
    protected function getPivotParameterForItem($item, $parameterName)
    {
        $table = Str::beforeLast($parameterName, '.');

foreach ($item->getRelations() as $relation) {
            if ($relation instanceof Pivot && $relation->getTable() === $table) {
                return $this->ensureParameterIsPrimitive(
                    $relation->getAttribute(Str::afterLast($parameterName, '.'))
                );
            }
        }
    }

/**
     * Ensure the parameter is a primitive type.
     *
     * This can resolve issues that arise the developer uses a value object for an attribute.
     *
     * @param  mixed  $parameter
     * @return mixed
     */
    protected function ensureParameterIsPrimitive($parameter)
    {
        return is_object($parameter) && method_exists($parameter, '__toString')
                        ? (string) $parameter
                        : $parameter;
    }

/**
     * Get / set the URL fragment to be appended to URLs.
     *
     * @param  string|null  $fragment
     * @return $this|string|null
     */
    public function fragment($fragment = null)
    {
        if (is_null($fragment)) {
            return $this->fragment;
        }

$this->fragment = $fragment;

return $this;
    }

/**
     * Add a set of query string values to the paginator.
     *
     * @param  array|string|null  $key
     * @param  string|null  $value
     * @return $this
     */
    public function appends($key, $value = null)
    {
        if (is_null($key)) {
            return $this;
        }

if (is_array($key)) {
            return $this->appendArray($key);
        }

return $this->addQuery($key, $value);
    }

/**
     * Add an array of query string values.
     *
     * @param  array  $keys
     * @return $this
     */
    protected function appendArray(array $keys)
    {
        foreach ($keys as $key => $value) {
            $this->addQuery($key, $value);
        }

return $this;
    }

/**
     * Add all current query string values to the paginator.
     *
     * @return $this
     */
    public function withQueryString()
    {
        if (! is_null($query = Paginator::resolveQueryString())) {
            return $this->appends($query);
        }

return $this;
    }

/**
     * Add a query string value to the paginator.
     *
     * @param  string  $key
     * @param  string  $value
     * @return $this
     */
    protected function addQuery($key, $value)
    {
        if ($key !== $this->cursorName) {
            $this->query[$key] = $value;
        }

return $this;
    }

/**
     * Build the full fragment portion of a URL.
     *
     * @return string
     */
    protected function buildFragment()
    {
        return $this->fragment ? '#'.$this->fragment : '';
    }

/**
     * Load a set of relationships onto the mixed relationship collection.
     *
     * @param  string  $relation
     * @param  array  $relations
     * @return $this
     */
    public function loadMorph($relation, $relations)
    {
        $this->getCollection()->loadMorph($relation, $relations);

return $this;
    }

/**
     * Load a set of relationship counts onto the mixed relationship collection.
     *
     * @param  string  $relation
     * @param  array  $relations
     * @return $this
     */
    public function loadMorphCount($relation, $relations)
    {
        $this->getCollection()->loadMorphCount($relation, $relations);

return $this;
    }

/**
     * Get the slice of items being paginated.
     *
     * @return array
     */
    public function items()
    {
        return $this->items->all();
    }

/**
     * Transform each item in the slice of items using a callback.
     *
     * @param  callable  $callback
     * @return $this
     */
    public function through(callable $callback)
    {
        $this->items->transform($callback);

return $this;
    }

/**
     * Get the number of items shown per page.
     *
     * @return int
     */
    public function perPage()
    {
        return $this->perPage;
    }

/**
     * Get the current cursor being paginated.
     *
     * @return \Illuminate\Pagination\Cursor|null
     */
    public function cursor()
    {
        return $this->cursor;
    }

/**
     * Get the query string variable used to store the cursor.
     *
     * @return string
     */
    public function getCursorName()
    {
        return $this->cursorName;
    }

/**
     * Set the query string variable used to store the cursor.
     *
     * @param  string  $name
     * @return $this
     */
    public function setCursorName($name)
    {
        $this->cursorName = $name;

return $this;
    }

/**
     * Set the base path to assign to all URLs.
     *
     * @param  string  $path
     * @return $this
     */
    public function withPath($path)
    {
        return $this->setPath($path);
    }

/**
     * Set the base path to assign to all URLs.
     *
     * @param  string  $path
     * @return $this
     */
    public function setPath($path)
    {
        $this->path = $path;

return $this;
    }

/**
     * Get the base path for paginator generated URLs.
     *
     * @return string|null
     */
    public function path()
    {
        return $this->path;
    }

/**
     * Resolve the current cursor or return the default value.
     *
     * @param  string  $cursorName
     * @return \Illuminate\Pagination\Cursor|null
     */
    public static function resolveCurrentCursor($cursorName = 'cursor', $default = null)
    {
        if (isset(static::$currentCursorResolver)) {
            return call_user_func(static::$currentCursorResolver, $cursorName);
        }

return $default;
    }

/**
     * Set the current cursor resolver callback.
     *
     * @param  \Closure  $resolver
     * @return void
     */
    public static function currentCursorResolver(Closure $resolver)
    {
        static::$currentCursorResolver = $resolver;
    }

/**
     * Get an instance of the view factory from the resolver.
     *
     * @return \Illuminate\Contracts\View\Factory
     */
    public static function viewFactory()
    {
        return Paginator::viewFactory();
    }

/**
     * Get an iterator for the items.
     *
     * @return \ArrayIterator
     */
    #[\ReturnTypeWillChange]
    public function getIterator()
    {
        return $this->items->getIterator();
    }

/**
     * Determine if the list of items is empty.
     *
     * @return bool
     */
    public function isEmpty()
    {
        return $this->items->isEmpty();
    }

/**
     * Determine if the list of items is not empty.
     *
     * @return bool
     */
    public function isNotEmpty()
    {
        return $this->items->isNotEmpty();
    }

/**
     * Get the number of items for the current page.
     *
     * @return int
     */
    #[\ReturnTypeWillChange]
    public function count()
    {
        return $this->items->count();
    }

/**
     * Get the paginator's underlying collection.
     *
     * @return \Illuminate\Support\Collection
     */
    public function getCollection()
    {
        return $this->items;
    }

/**
     * Set the paginator's underlying collection.
     *
     * @param  \Illuminate\Support\Collection  $collection
     * @return $this
     */
    public function setCollection(Collection $collection)
    {
        $this->items = $collection;

return $this;
    }

/**
     * Get the paginator options.
     *
     * @return array
     */
    public function getOptions()
    {
        return $this->options;
    }

/**
     * Determine if the given item exists.
     *
     * @param  mixed  $key
     * @return bool
     */
    #[\ReturnTypeWillChange]
    public function offsetExists($key)
    {
        return $this->items->has($key);
    }

/**
     * Get the item at the given offset.
     *
     * @param  mixed  $key
     * @return mixed
     */
    #[\ReturnTypeWillChange]
    public function offsetGet($key)
    {
        return $this->items->get($key);
    }

/**
     * Set the item at the given offset.
     *
     * @param  mixed  $key
     * @param  mixed  $value
     * @return void
     */
    #[\ReturnTypeWillChange]
    public function offsetSet($key, $value)
    {
        $this->items->put($key, $value);
    }

/**
     * Unset the item at the given key.
     *
     * @param  mixed  $key
     * @return void
     */
    #[\ReturnTypeWillChange]
    public function offsetUnset($key)
    {
        $this->items->forget($key);
    }

/**
     * Render the contents of the paginator to HTML.
     *
     * @return string
     */
    public function toHtml()
    {
        return (string) $this->render();
    }

/**
     * Make dynamic calls into the collection.
     *
     * @param  string  $method
     * @param  array  $parameters
     * @return mixed
     */
    public function __call($method, $parameters)
    {
        return $this->forwardCallTo($this->getCollection(), $method, $parameters);
    }

/**
     * Render the contents of the paginator when casting to a string.
     *
     * @return string
     */
    public function __toString()
    {
        return (string) $this->render();
    }
}

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