qingjian/app/service/Page.php

<?php
namespace app\service;

use think\Paginator;

class Page extends Paginator
{

    protected $linkStr;
    /**
     * 上一页按钮
     * @param string $text
     * @return string
     */
    protected function getPreviousButton(string $text = "<"): string
    {

        if ($this->currentPage() <= 1) {
//            return ('<li class="disabled"><a >上一页</a></li>'.$this->getDisabledTextWrapper($text,"prev"));
            return ('   <div class="li"><a href="javascript:;" class="prve"></a></div> ');
        }

        $url = $this->url(
            $this->currentPage() - 1
        );

//        return  ($this->getPageLinkWrapper($url, "上一页" ,"") .$this->getPageLinkWrapper($url, $text ,"prev"));
        return  ($this->getPageLinkWrapper($url, "" ,"prve"));
    }

    /**
     * 下一页按钮
     * @param string $text
     * @return string
     */
    protected function getNextButton(string $text = '>'): string
    {
        if (!$this->hasMore) {
//            return ($this->getDisabledTextWrapper($text,"next").'<li class="disabled"><a >下一页</a></li>');
            return ('<div class="li"><a href="javascript:;" class="next"></a></div>');
        }

        $url = $this->url($this->currentPage() + 1);

        return ($this->getPageLinkWrapper($url, "",'next')) ;
    }

    /**
     * 页码按钮
     * @return string
     */
    protected function getLinks(): string
    {
        if ($this->simple) {
            return '';
        }

        $block = [
            'first'  => null,
            'slider' => null,
            'last'   => null,
        ];

        $side   = 3;
        $window = $side * 2;

        if ($this->lastPage < $window + 6) {
            $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);
        }

        $html = '';

        if (is_array($block['first'])) {
            $html .= $this->getUrlLinks($block['first']);
        }

        if (is_array($block['slider'])) {
            $html .= $this->getDots();
            $html .= $this->getUrlLinks($block['slider']);
        }

        if (is_array($block['last'])) {
            $html .= $this->getDots();
            $html .= $this->getUrlLinks($block['last']);
        }

        return $html;
    }

    /**
     * 渲染分页html
     * @return mixed
     */
    public function render($linkStr='')
    {
        $this->linkStr=$linkStr;
        if ($this->hasPages()) {
            if ($this->simple) {
                return sprintf(
                    '<div class="pade">%s %s</div>',
                    $this->getPreviousButton(),
                    $this->getNextButton()
                );
            } else {
                return sprintf(
                    '<div class="pade">%s %s %s</div>',
                    $this->getPreviousButton(),
                    $this->getLinks(),
                    $this->getNextButton()
                );
            }
        }
    }

    /**
     * 生成一个可点击的按钮
     *
     * @param  string $url
     * @param  string $page
     * @return string
     */
    protected function getAvailablePageWrapper(string $url, string $page,$class=""): string
    {
        return '<li class="li" ><a href="' . htmlentities($url) . $this->linkStr.'" class="'.$class.'">' . $page . '</a></li>';
    }

    /**
     * 生成一个禁用的按钮
     *
     * @param  string $text
     * @return string
     */
    protected function getDisabledTextWrapper(string $text,$class=""): string
    {
        return '<li class="li disabled"  ><a class="'.$class.'">' . $text . '</a></li> ';
    }

    /**
     * 生成一个激活的按钮
     *
     * @param  string $text
     * @return string
     */
    protected function getActivePageWrapper(string $text,$class=""): string
    {
//        return '<li class="active"><span class="'.$class.'">' . $text . '</span></li>';
        return '<li class="li"><a class="'.$class.'">' . $text . '</a></li>';
    }

    /**
     * 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 $page ,$class=""): string
    {
        if ($this->currentPage() == $page) {
            return $this->getActivePageWrapper($page,'cur');
        }

        return $this->getAvailablePageWrapper($url, $page,$class);
    }
}