1<?php 2/** 3 * XOOPS page navigation 4 * 5 * You may not change or alter any portion of this comment or credits 6 * of supporting developers from this source code or any supporting source code 7 * which is considered copyrighted (c) material of the original comment or credit authors. 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 11 * 12 * @copyright (c) 2000-2016 XOOPS Project (www.xoops.org) 13 * @license GNU GPL 2 (http://www.gnu.org/licenses/gpl-2.0.html) 14 * @package kernel 15 * @since 2.0.0 16 * @author Kazumi Ono (http://www.myweb.ne.jp/, http://jp.xoops.org/) 17 */ 18 19use Xmf\Request; 20 21defined('XOOPS_ROOT_PATH') || exit('Restricted access'); 22 23/** 24 * Class XoopsPageNav 25 */ 26class XoopsPageNav 27{ 28 /** 29 * *#@+ 30 * 31 * @access private 32 */ 33 public $total; 34 public $perpage; 35 public $current; 36 public $url; 37 /** 38 * *#@- 39 */ 40 41 /** 42 * Constructor 43 * 44 * @param int $total_items Total number of items 45 * @param int $items_perpage Number of items per page 46 * @param int $current_start First item on the current page 47 * @param string $start_name Name for "start" or "offset" 48 * @param string $extra_arg Additional arguments to pass in the URL 49 */ 50 public function __construct($total_items, $items_perpage, $current_start, $start_name = 'start', $extra_arg = '') 51 { 52 $this->total = (int)$total_items; 53 $this->perpage = (int)$items_perpage; 54 $this->current = (int)$current_start; 55 $this->extra = $extra_arg; 56 if ($extra_arg != '' && (substr($extra_arg, -5) !== '&' || substr($extra_arg, -1) !== '&')) { 57 $this->extra = '&' . $extra_arg; 58 } 59 $this->url = htmlspecialchars(Request::getString('PHP_SELF', '', 'SERVER'), ENT_QUOTES) . '?' . trim($start_name) . '='; 60 } 61 62 /** 63 * Create text navigation 64 * 65 * @param integer $offset 66 * @return string 67 */ 68 public function renderNav($offset = 4) 69 { 70 $ret = ''; 71 if ($this->total <= $this->perpage) { 72 return $ret; 73 } 74 if (($this->total != 0) && ($this->perpage != 0)) { 75 $total_pages = ceil($this->total / $this->perpage); 76 if ($total_pages > 1) { 77 $ret .= '<div id="xo-pagenav">'; 78 $prev = $this->current - $this->perpage; 79 if ($prev >= 0) { 80 $ret .= '<a class="xo-pagarrow" href="' . $this->url . $prev . $this->extra . '"><u>«</u></a> '; 81 } 82 $counter = 1; 83 $current_page = (int)floor(($this->current + $this->perpage) / $this->perpage); 84 while ($counter <= $total_pages) { 85 if ($counter == $current_page) { 86 $ret .= '<strong class="xo-pagact" >(' . $counter . ')</strong> '; 87 } elseif (($counter > $current_page - $offset && $counter < $current_page + $offset) || $counter == 1 || $counter == $total_pages) { 88 if ($counter == $total_pages && $current_page < $total_pages - $offset) { 89 $ret .= '... '; 90 } 91 $ret .= '<a class="xo-counterpage" href="' . $this->url . (($counter - 1) * $this->perpage) . $this->extra . '">' . $counter . '</a> '; 92 if ($counter == 1 && $current_page > 1 + $offset) { 93 $ret .= '... '; 94 } 95 } 96 ++$counter; 97 } 98 $next = $this->current + $this->perpage; 99 if ($this->total > $next) { 100 $ret .= '<a class="xo-pagarrow" href="' . $this->url . $next . $this->extra . '"><u>»</u></a> '; 101 } 102 $ret .= '</div> '; 103 } 104 } 105 106 return $ret; 107 } 108 109 /** 110 * Create a navigational dropdown list 111 * 112 * @param boolean $showbutton Show the "Go" button? 113 * @return string 114 */ 115 public function renderSelect($showbutton = false) 116 { 117 if ($this->total < $this->perpage) { 118 return null; 119 } 120 $total_pages = ceil($this->total / $this->perpage); 121 $ret = ''; 122 if ($total_pages > 1) { 123 $ret = '<form name="pagenavform">'; 124 $ret .= '<select name="pagenavselect" onchange="location=this.options[this.options.selectedIndex].value;">'; 125 $counter = 1; 126 $current_page = (int)floor(($this->current + $this->perpage) / $this->perpage); 127 while ($counter <= $total_pages) { 128 if ($counter == $current_page) { 129 $ret .= '<option value="' . $this->url . (($counter - 1) * $this->perpage) . $this->extra . '" selected>' . $counter . '</option>'; 130 } else { 131 $ret .= '<option value="' . $this->url . (($counter - 1) * $this->perpage) . $this->extra . '">' . $counter . '</option>'; 132 } 133 ++$counter; 134 } 135 $ret .= '</select>'; 136 if ($showbutton) { 137 $ret .= ' <input type="submit" value="' . _GO . '" />'; 138 } 139 $ret .= '</form>'; 140 } 141 142 return $ret; 143 } 144 145 /** 146 * Create navigation with images 147 * 148 * @param integer $offset 149 * @return string 150 */ 151 public function renderImageNav($offset = 4) 152 { 153 if ($this->total < $this->perpage) { 154 return null; 155 } 156 $total_pages = ceil($this->total / $this->perpage); 157 $ret = ''; 158 if ($total_pages > 1) { 159 $ret = '<table><tr>'; 160 $prev = $this->current - $this->perpage; 161 if ($prev >= 0) { 162 $ret .= '<td class="pagneutral"><a href="' . $this->url . $prev . $this->extra . '"><</a></td><td><img src="' . XOOPS_URL . '/images/blank.gif" width="6" alt="" /></td>'; 163 } else { 164 $ret .= '<td class="pagno"></a></td><td><img src="' . XOOPS_URL . '/images/blank.gif" width="6" alt="" /></td>'; 165 } 166 $counter = 1; 167 $current_page = (int)floor(($this->current + $this->perpage) / $this->perpage); 168 while ($counter <= $total_pages) { 169 if ($counter == $current_page) { 170 $ret .= '<td class="pagact"><strong>' . $counter . '</strong></td>'; 171 } elseif (($counter > $current_page - $offset && $counter < $current_page + $offset) || $counter == 1 || $counter == $total_pages) { 172 if ($counter == $total_pages && $current_page < $total_pages - $offset) { 173 $ret .= '<td class="paginact">...</td>'; 174 } 175 $ret .= '<td class="paginact"><a href="' . $this->url . (($counter - 1) * $this->perpage) . $this->extra . '">' . $counter . '</a></td>'; 176 if ($counter == 1 && $current_page > 1 + $offset) { 177 $ret .= '<td class="paginact">...</td>'; 178 } 179 } 180 ++$counter; 181 } 182 $next = $this->current + $this->perpage; 183 if ($this->total > $next) { 184 $ret .= '<td><img src="' . XOOPS_URL . '/images/blank.gif" width="6" alt="" /></td><td class="pagneutral"><a href="' . $this->url . $next . $this->extra . '">></a></td>'; 185 } else { 186 $ret .= '<td><img src="' . XOOPS_URL . '/images/blank.gif" width="6" alt="" /></td><td class="pagno"></td>'; 187 } 188 $ret .= '</tr></table>'; 189 } 190 191 return $ret; 192 } 193} 194
