410 lines
9.7 KiB
PHP
410 lines
9.7 KiB
PHP
<?php
|
|
// +----------------------------------------------------------------------
|
|
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
|
|
// +----------------------------------------------------------------------
|
|
// | Copyright (c) 2006~2018 http://thinkphp.cn All rights reserved.
|
|
// +----------------------------------------------------------------------
|
|
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
|
|
// +----------------------------------------------------------------------
|
|
// | Author: zhangyajun <448901948@qq.com>
|
|
// +----------------------------------------------------------------------
|
|
|
|
namespace think;
|
|
|
|
use ArrayAccess;
|
|
use ArrayIterator;
|
|
use Countable;
|
|
use IteratorAggregate;
|
|
use JsonSerializable;
|
|
use Traversable;
|
|
|
|
abstract class Paginator implements ArrayAccess, Countable, IteratorAggregate, JsonSerializable
|
|
{
|
|
/** @var bool 是否为简洁模式 */
|
|
protected $simple = false;
|
|
|
|
/** @var Collection 数据集 */
|
|
protected $items;
|
|
|
|
/** @var integer 当前页 */
|
|
protected $currentPage;
|
|
|
|
/** @var integer 最后一页 */
|
|
protected $lastPage;
|
|
|
|
/** @var integer|null 数据总数 */
|
|
protected $total;
|
|
|
|
/** @var integer 每页的数量 */
|
|
protected $listRows;
|
|
|
|
/** @var bool 是否有下一页 */
|
|
protected $hasMore;
|
|
|
|
/** @var array 一些配置 */
|
|
protected $options = [
|
|
'var_page' => 'page',
|
|
'path' => '/',
|
|
'query' => [],
|
|
'fragment' => '',
|
|
];
|
|
|
|
/** @var mixed simple模式下的下个元素 */
|
|
protected $nextItem;
|
|
|
|
public function __construct($items, $listRows, $currentPage = null, $total = null, $simple = false, $options = [])
|
|
{
|
|
$this->options = array_merge($this->options, $options);
|
|
|
|
$this->options['path'] = '/' != $this->options['path'] ? rtrim($this->options['path'], '/') : $this->options['path'];
|
|
|
|
$this->simple = $simple;
|
|
$this->listRows = $listRows;
|
|
|
|
if (!$items instanceof Collection) {
|
|
$items = Collection::make($items);
|
|
}
|
|
|
|
if ($simple) {
|
|
$this->currentPage = $this->setCurrentPage($currentPage);
|
|
$this->hasMore = count($items) > ($this->listRows);
|
|
if ($this->hasMore) {
|
|
$this->nextItem = $items->slice($this->listRows, 1);
|
|
}
|
|
$items = $items->slice(0, $this->listRows);
|
|
} else {
|
|
$this->total = $total;
|
|
$this->lastPage = (int) ceil($total / $listRows);
|
|
$this->currentPage = $this->setCurrentPage($currentPage);
|
|
$this->hasMore = $this->currentPage < $this->lastPage;
|
|
}
|
|
$this->items = $items;
|
|
}
|
|
|
|
/**
|
|
* @param $items
|
|
* @param $listRows
|
|
* @param null $currentPage
|
|
* @param bool $simple
|
|
* @param null $total
|
|
* @param array $options
|
|
* @return Paginator
|
|
*/
|
|
public static function make($items, $listRows, $currentPage = null, $total = null, $simple = false, $options = [])
|
|
{
|
|
return new static($items, $listRows, $currentPage, $total, $simple, $options);
|
|
}
|
|
|
|
protected function setCurrentPage($currentPage)
|
|
{
|
|
if (!$this->simple && $currentPage > $this->lastPage) {
|
|
return $this->lastPage > 0 ? $this->lastPage : 1;
|
|
}
|
|
|
|
return $currentPage;
|
|
}
|
|
|
|
/**
|
|
* 获取页码对应的链接
|
|
*
|
|
* @param $page
|
|
* @return string
|
|
*/
|
|
protected function url($page)
|
|
{
|
|
if ($page <= 0) {
|
|
$page = 1;
|
|
}
|
|
|
|
if (strpos($this->options['path'], '[PAGE]') === false) {
|
|
$parameters = [$this->options['var_page'] => $page];
|
|
$path = $this->options['path'];
|
|
} else {
|
|
$parameters = [];
|
|
$path = str_replace('[PAGE]', $page, $this->options['path']);
|
|
}
|
|
if (count($this->options['query']) > 0) {
|
|
$parameters = array_merge($this->options['query'], $parameters);
|
|
}
|
|
$url = $path;
|
|
if (!empty($parameters)) {
|
|
$url .= '?' . http_build_query($parameters, null, '&');
|
|
}
|
|
return $url . $this->buildFragment();
|
|
}
|
|
|
|
/**
|
|
* 自动获取当前页码
|
|
* @param string $varPage
|
|
* @param int $default
|
|
* @return int
|
|
*/
|
|
public static function getCurrentPage($varPage = 'page', $default = 1)
|
|
{
|
|
$page = (int) Request::instance()->param($varPage);
|
|
|
|
if (filter_var($page, FILTER_VALIDATE_INT) !== false && $page >= 1) {
|
|
return $page;
|
|
}
|
|
|
|
return $default;
|
|
}
|
|
|
|
/**
|
|
* 自动获取当前的path
|
|
* @return string
|
|
*/
|
|
public static function getCurrentPath()
|
|
{
|
|
return Request::instance()->baseUrl();
|
|
}
|
|
|
|
public function total()
|
|
{
|
|
if ($this->simple) {
|
|
throw new \DomainException('not support total');
|
|
}
|
|
return $this->total;
|
|
}
|
|
|
|
public function listRows()
|
|
{
|
|
return $this->listRows;
|
|
}
|
|
|
|
public function currentPage()
|
|
{
|
|
return $this->currentPage;
|
|
}
|
|
|
|
public function lastPage()
|
|
{
|
|
if ($this->simple) {
|
|
throw new \DomainException('not support last');
|
|
}
|
|
return $this->lastPage;
|
|
}
|
|
|
|
/**
|
|
* 数据是否足够分页
|
|
* @return boolean
|
|
*/
|
|
public function hasPages()
|
|
{
|
|
return !(1 == $this->currentPage && !$this->hasMore);
|
|
}
|
|
|
|
/**
|
|
* 创建一组分页链接
|
|
*
|
|
* @param int $start
|
|
* @param int $end
|
|
* @return array
|
|
*/
|
|
public function getUrlRange($start, $end)
|
|
{
|
|
$urls = [];
|
|
|
|
for ($page = $start; $page <= $end; $page++) {
|
|
$urls[$page] = $this->url($page);
|
|
}
|
|
|
|
return $urls;
|
|
}
|
|
|
|
/**
|
|
* 设置URL锚点
|
|
*
|
|
* @param string|null $fragment
|
|
* @return $this
|
|
*/
|
|
public function fragment($fragment)
|
|
{
|
|
$this->options['fragment'] = $fragment;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* 添加URL参数
|
|
*
|
|
* @param array|string $key
|
|
* @param string|null $value
|
|
* @return $this
|
|
*/
|
|
public function appends($key, $value = null)
|
|
{
|
|
if (!is_array($key)) {
|
|
$queries = [$key => $value];
|
|
} else {
|
|
$queries = $key;
|
|
}
|
|
|
|
foreach ($queries as $k => $v) {
|
|
if ($k !== $this->options['var_page']) {
|
|
$this->options['query'][$k] = $v;
|
|
}
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* 构造锚点字符串
|
|
*
|
|
* @return string
|
|
*/
|
|
protected function buildFragment()
|
|
{
|
|
return $this->options['fragment'] ? '#' . $this->options['fragment'] : '';
|
|
}
|
|
|
|
/**
|
|
* 渲染分页html
|
|
* @return mixed
|
|
*/
|
|
abstract public function render();
|
|
|
|
public function items()
|
|
{
|
|
return $this->items->all();
|
|
}
|
|
|
|
public function getCollection()
|
|
{
|
|
return $this->items;
|
|
}
|
|
|
|
public function isEmpty()
|
|
{
|
|
return $this->items->isEmpty();
|
|
}
|
|
|
|
/**
|
|
* 给每个元素执行个回调
|
|
*
|
|
* @param callable $callback
|
|
* @return $this
|
|
*/
|
|
public function each(callable $callback)
|
|
{
|
|
foreach ($this->items as $key => $item) {
|
|
$result = $callback($item, $key);
|
|
if (false === $result) {
|
|
break;
|
|
} elseif (!is_object($item)) {
|
|
$this->items[$key] = $result;
|
|
}
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Retrieve an external iterator
|
|
* @return Traversable An instance of an object implementing <b>Iterator</b> or
|
|
* <b>Traversable</b>
|
|
*/
|
|
public function getIterator()
|
|
{
|
|
return new ArrayIterator($this->items->all());
|
|
}
|
|
|
|
/**
|
|
* Whether a offset exists
|
|
* @param mixed $offset
|
|
* @return bool
|
|
*/
|
|
public function offsetExists($offset)
|
|
{
|
|
return $this->items->offsetExists($offset);
|
|
}
|
|
|
|
/**
|
|
* Offset to retrieve
|
|
* @param mixed $offset
|
|
* @return mixed
|
|
*/
|
|
public function offsetGet($offset)
|
|
{
|
|
return $this->items->offsetGet($offset);
|
|
}
|
|
|
|
/**
|
|
* Offset to set
|
|
* @param mixed $offset
|
|
* @param mixed $value
|
|
*/
|
|
public function offsetSet($offset, $value)
|
|
{
|
|
$this->items->offsetSet($offset, $value);
|
|
}
|
|
|
|
/**
|
|
* Offset to unset
|
|
* @param mixed $offset
|
|
* @return void
|
|
* @since 5.0.0
|
|
*/
|
|
public function offsetUnset($offset)
|
|
{
|
|
$this->items->offsetUnset($offset);
|
|
}
|
|
|
|
/**
|
|
* Count elements of an object
|
|
*/
|
|
public function count()
|
|
{
|
|
return $this->items->count();
|
|
}
|
|
|
|
public function __toString()
|
|
{
|
|
return (string) $this->render();
|
|
}
|
|
|
|
public function toArray()
|
|
{
|
|
if ($this->simple) {
|
|
return [
|
|
'per_page' => $this->listRows,
|
|
'current_page' => $this->currentPage,
|
|
'has_more' => $this->hasMore,
|
|
'next_item' => $this->nextItem,
|
|
'data' => $this->items->toArray(),
|
|
];
|
|
} else {
|
|
return [
|
|
'total' => $this->total,
|
|
'per_page' => $this->listRows,
|
|
'current_page' => $this->currentPage,
|
|
'last_page' => $this->lastPage,
|
|
'data' => $this->items->toArray(),
|
|
];
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Specify data which should be serialized to JSON
|
|
*/
|
|
public function jsonSerialize()
|
|
{
|
|
return $this->toArray();
|
|
}
|
|
|
|
public function __call($name, $arguments)
|
|
{
|
|
$collection = $this->getCollection();
|
|
|
|
$result = call_user_func_array([$collection, $name], $arguments);
|
|
|
|
if ($result === $collection) {
|
|
return $this;
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
}
|