// +----------------------------------------------------------------------
namespace app\common\library;
use think\Collection;
use think\Paginator;
class Bootstrap extends Paginator
{
public function __construct($items, int $listRows, int $currentPage = 1, int $total = null, bool $simple = false, array $options = [])
{
parent::__construct($items, $listRows, $currentPage, $total, $simple, $options);
$this->options = array_merge($this->options, $options);
$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);
$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;
}
/**
* 首页按钮
* @param string $text
* @return string
*/
protected function getHomeButton(string $text = "«"): string
{
if ($this->currentPage() <= 1) {
return $this->getDisabledTextWrapper($text);
}
$url = $this->url(1);
return $this->getPageLinkWrapper($url, $text);
}
/**
* 上一页按钮
* @param string $text
* @return string
*/
protected function getPreviousButton(string $text = "«"): string
{
if ($this->currentPage() <= 1) {
return $this->getDisabledTextWrapper($text);
}
$url = $this->url(
$this->currentPage() - 1
);
return $this->getPageLinkWrapper($url, $text);
}
/**
* 下一页按钮
* @param string $text
* @return string
*/
protected function getNextButton(string $text = '»'): string
{
if (!$this->hasMore) {
return $this->getDisabledTextWrapper($text);
}
$url = $this->url($this->currentPage() + 1);
return $this->getPageLinkWrapper($url, $text);
}
/**
* 末页按钮
* @param string $text
* @return string
*/
protected function getLastButton(string $text = '»'): string
{
if (!$this->hasMore) {
return $this->getDisabledTextWrapper($text);
}
$url = $this->url($this->lastPage);
return $this->getPageLinkWrapper($url, $text);
}
/**
* 页码信息
* @param $txt
* @return string
*/
protected function getPageInfo($txt = ''): string
{
if ($txt) {
return sprintf($txt, $this->lastPage, $this->total);
}
return ''.lang('A total of %s page %s data', [$this->lastPage, $this->total]).'';
}
/**
* 跳转页码
* @return string
*/
protected function getPageJump(): string
{
if (site('url_mode')==1) {
$query = $GLOBALS["JUMP_query"];
unset($query['page']);
$url = index_url($this->options['path'], $query);
} else {
// 动态
$url = $this->url(1);
}
$data = parse_url($url);
if (!empty($data['query'])) {
$query = explode('&', $data['query']);
$params = [];
foreach ($query as $param) {
$item = explode('=', $param);
$params[$item[0]] = $item[1]??'';
}
$params['page'] = '';
$url = $data['path'].'?'.http_build_query($params, '', '&');
} else {
$url .= '?page=';
}
$id = 'id-'.get_random_str(6);
return ''.lang('Jump to').'
'.lang('Page').'
'.lang('Jump').'';
}
/**
* 页码按钮
* @param $side
* @param integer $dots 【已取消】
* @return string
*/
protected function getLinks($side=3, $dots = 1): string
{
if ($this->simple) {
return '';
}
$block = [
'first' => null,
'slider' => null,
'last' => null,
];
$window = $side;
// $window = $side * 2;
// if ($this->lastPage < $window + 4) {
// $block['first'] = $this->getUrlRange(1, $this->lastPage);
// } elseif ($this->currentPage <= $window) {
// $block['first'] = $this->getUrlRange(1, $window + 2);
// $block['last'] = $this->getUrlRange($this->lastPage - 1, $this->lastPage);
// } elseif ($this->currentPage > ($this->lastPage - $window)) {
// $block['first'] = $this->getUrlRange(1, 2);
// $block['last'] = $this->getUrlRange($this->lastPage - ($window + 2), $this->lastPage);
// } else {
// $block['first'] = $this->getUrlRange(1, 2);
// $block['slider'] = $this->getUrlRange($this->currentPage - $side, $this->currentPage + $side);
// $block['last'] = $this->getUrlRange($this->lastPage - 1, $this->lastPage);
// }
if ($this->lastPage <= $window) { // 没超过原样显示
$block['first'] = $this->getUrlRange(1, $this->lastPage);
} else {
$num = intval($window/2);
if ($this->currentPage-$window <= 0) {
if ($window%2) {
if ($this->currentPage <= $num+1) {
$block['first'] = $this->getUrlRange(1, $window);
} else {
$block['first'] = $this->getUrlRange($this->currentPage-$num, $this->currentPage+$num);
}
} else {
if ($this->currentPage <= $num) {
$block['first'] = $this->getUrlRange(1, $window);
} else {
$block['first'] = $this->getUrlRange($this->currentPage-$num+1, $this->currentPage+$num);
}
}
} else if ($this->currentPage+$num > $this->lastPage) {
$block['first'] = $this->getUrlRange($this->lastPage-$window+1, $this->lastPage);
} else {
$block['first'] = $this->getUrlRange($window%2?$this->currentPage-$num:$this->currentPage-$num+1, $this->currentPage+$num);
}
}
$html = '';
if (is_array($block['first'])) {
$html .= $this->getUrlLinks($block['first']);
}
if (is_array($block['slider'])) {
//if (!$dots) {
// $html .= $this->getDots();
//}
$html .= $this->getUrlLinks($block['slider']);
}
if (is_array($block['last'])) {
//if (!$dots) {
// $html .= $this->getDots();
//}
$html .= $this->getUrlLinks($block['last']);
}
return $html;
}
/**
* 渲染分页html
* @param $tag
* @return mixed
*/
public function render($tag=[])
{
$item = !empty($tag['item']) ? explode(',', $tag['item']) : [];
if (empty($item)) {
if ($this->hasPages()) {
if ($this->simple) {
return sprintf(
'',
$this->getPreviousButton(),
$this->getNextButton()
);
} else {
return sprintf(
'',
$this->getPreviousButton(),
$this->getLinks(),
$this->getNextButton()
);
}
}
}
$side = !empty($tag['size']) && is_numeric($tag['size']) ? $tag['size'] : 5;
$dots = isset($tag['dots']) && $tag['dots']==1 ? 0 : 1;
$infotxt = !empty($tag['info']) ? $tag['info']:'';
$emptxt = !empty($tag['emptxt']) ? $tag['emptxt']:'';
$hasemp = !empty($tag['hasemp']) && $tag['hasemp']=='false' ? 0:1;
if ($this->hasPages()) {
if ($this->simple) {
return sprintf(
'',
$this->getPreviousButton(),
$this->getNextButton()
);
} else {
$ul_arr = [];
$info = '';
$jump = '';
if (in_array('home', $item)) { // 首页
$ul_arr[] = $this->getHomeButton($tag['home']??lang('Home'));
}
if (in_array('pre', $item)) { // 上一页
$ul_arr[] = $this->getPreviousButton($tag['pre']??lang('Previous page'));
}
if (in_array('pageno', $item)) { // 页码
$ul_arr[] = $this->getLinks($side, $dots);
}
if (in_array('next', $item)) { // 下一页
$ul_arr[] = $this->getNextButton($tag['next']??lang('Next page'));
}
if (in_array('last', $item)) { // 末页
$ul_arr[] = $this->getLastButton($tag['last']??lang('Last page'));
}
if (in_array('info', $item)) { // 数量说明
$info = '';
}
if (in_array('jump', $item)) { // 跳转指定页码
$jump = '';
}
return sprintf(
'',
implode('', $ul_arr),$info,$jump
);
}
} else {
if (!$hasemp) {
return '';
}
$info = '';
return sprintf(
'', $info
);
}
}
/**
* 生成一个可点击的按钮
*
* @param string $url
* @param string $page
* @return string
*/
protected function getAvailablePageWrapper(string $url, string $page): string
{
return '' . $page . '';
}
/**
* 生成一个禁用的按钮
*
* @param string $text
* @return string
*/
protected function getDisabledTextWrapper(string $text): string
{
return '' . $text . '';
}
/**
* 生成一个激活的按钮
*
* @param string $text
* @return string
*/
protected function getActivePageWrapper(string $text): string
{
return '' . $text . '';
}
/**
* 生成省略号按钮
*
* @return string
*/
protected function getDots(): string
{
return $this->getDisabledTextWrapper('...');
}
/**
* 批量生成页码按钮.
*
* @param array $urls
* @return string
*/
protected function getUrlLinks(array $urls): string
{
$html = '';
foreach ($urls as $page => $url) {
$html .= $this->getPageLinkWrapper($url, $page);
}
return $html;
}
/**
* 生成普通页码按钮
*
* @param string $url
* @param string $page
* @return string
*/
protected function getPageLinkWrapper(string $url, string $page): string
{
if ($this->currentPage() == $page) {
return $this->getActivePageWrapper($page);
}
return $this->getAvailablePageWrapper($url, $page);
}
/**
* 获取页码对应的链接
*
* @access protected
* @param int $page
* @return string
*/
protected function url(int $page): string
{
if ($page <= 0) {
$page = 1;
}
if ($url = self::diyUrl($page, $this->options)) { // 自定义URL链接规则
return $url . $this->buildFragment();
}
if (strpos($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, '', '&');
}
return $url . $this->buildFragment();
}
protected static $diyUrResolver;
/**
* 自定义回调URL生成
* @access public
* @param int $page
* @param array $options
* @return string
*/
public static function diyUrl(int $page, array $options): string
{
if (isset(static::$diyUrResolver)) {
return call_user_func(static::$diyUrResolver, $page, $options);
}
return '';
}
/**
* 自定义回调URL生成
* @param \Closure $resolver
*/
public static function diyUrlResolver(\Closure $resolver)
{
static::$diyUrResolver = $resolver;
}
/**
* 获取自定义
* @return mixed
*/
public static function getDiyUrl()
{
return isset(static::$diyUrResolver);
}
}