S2OJ/uoj/1/app/models/Paginator.php
vfleaking 4d2b0735dc update: fetch commits from upstream
Update from vfleaking/uoj upstream, commit aa8a85c - 9f1302c.
Because of this repo's modify, also with the adaption of community version.
2018-09-20 19:34:38 +08:00

102 lines
3.2 KiB
PHP

<?php
class Paginator {
public $n_rows;
public $n_pages;
public $page_len;
public $cur_page;
public $cur_start;
public $max_extend;
public $table;
public function __construct($config) {
if (isset($config['data'])) {
$this->n_pages = 1;
$this->cur_page = 1;
$this->cur_start = 0;
$this->table = $config['data'];
} elseif (!isset($config['echo_full'])) {
$this->n_rows = DB::selectCount("select count(*) from {$config['table_name']} where {$config['cond']}");
$this->page_len = isset($config['page_len']) ? $config['page_len'] : 10;
$this->n_pages = max((int)ceil($this->n_rows / $this->page_len), 1);
$this->cur_page = validateUInt($_GET['page']) ? (int)$_GET['page'] : 1;
if ($this->cur_page < 1) {
$this->cur_page = 1;
} else if ($this->cur_page > $this->n_pages) {
$this->cur_page = $this->n_pages;
}
$this->cur_start = ($this->cur_page - 1) * $this->page_len;
$this->table = DB::selectAll("select ".join($config['col_names'], ',')." from {$config['table_name']} where {$config['cond']} {$config['tail']} limit {$this->cur_start}, {$this->page_len}");
} else {
$this->n_pages = 1;
$this->cur_page = 1;
$this->cur_start = ($this->cur_page - 1) * $this->page_len;
$this->table = DB::selectAll("select ".join($config['col_names'], ',')." from {$config['table_name']} where {$config['cond']} {$config['tail']}");
}
$this->max_extend = isset($config['max_extend']) ? (int)$config['max_extend'] : 5;
}
public function getPageRawUri($page) {
$path = strtok($_SERVER["REQUEST_URI"], '?');
$query_string = strtok('?');
parse_str($query_string, $param);
$param['page'] = $page;
if ($page == 1)
unset($param['page']);
if ($param) {
return $path . '?' . http_build_query($param);
} else {
return $path;
}
}
public function getPageUri($page) {
return HTML::escape($this->getPageRawUri($page));
}
public function get() {
$cur_idx = $this->cur_start + 1;
foreach ($this->table as $idx => $row) {
yield $cur_idx++ => $row;
}
}
public function isEmpty() {
return empty($this->table);
}
public function pagination() {
if ($this->n_pages == 1) {
return '';
}
$html = '<div class="text-center">';
$html .= '<ul class="pagination top-buffer-no bot-buffer-sm">';
if ($this->cur_page > 1) {
$html .= '<li><a href="'.$this->getPageUri($this->cur_page - 1).'"><span class="glyphicon glyphicon glyphicon-backward"></span></a></li>';
} else {
$html .= '<li class="disabled"><a><span class="glyphicon glyphicon glyphicon-backward"></span></a></li>';
}
for ($i = max($this->cur_page - $this->max_extend, 1); $i <= min($this->cur_page + $this->max_extend, $this->n_pages); $i++) {
if ($i == $this->cur_page) {
$html .= '<li class="active"><a href="'.$this->getPageUri($i).'">'.$i.'</a></li>';
} else {
$html .= '<li><a href="'.$this->getPageUri($i).'">'.$i.'</a></li>';
}
}
if ($this->cur_page < $this->n_pages) {
$html .= '<li><a href="'.$this->getPageUri($this->cur_page + 1).'"><span class="glyphicon glyphicon glyphicon-forward"></span></a></li>';
} else {
$html .= '<li class="disabled"><a><span class="glyphicon glyphicon glyphicon-forward"></span></a></li>';
}
$html .= '</ul>';
$html .= '</div>';
return $html;
}
}