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<?php |
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/* |
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* You may not change or alter any portion of this comment or credits |
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* of supporting developers from this source code or any supporting source code |
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* which is considered copyrighted (c) material of the original comment or credit authors. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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*/ |
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/** |
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* @copyright XOOPS Project https://xoops.org/ |
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* @license GNU GPL 2 or later (https://www.gnu.org/licenses/gpl-2.0.html) |
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* @package |
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* @since |
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* @author XOOPS Development Team, Kazumi Ono (AKA onokazu) |
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*/ |
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/** |
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* Class to facilitate navigation in a multi page document/list |
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* |
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* @package kernel |
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* @subpackage util |
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* |
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* @author Kazumi Ono <[email protected]> |
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* @copyright (c) XOOPS Project (https://xoops.org) |
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*/ |
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/** |
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* Class XoopsPageNav |
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*/ |
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class XoopsPageNav |
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{ |
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/**#@+ |
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* @access private |
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*/ |
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public $total; |
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public $perpage; |
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public $current; |
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public $url; |
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/**#@-*/ |
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/** |
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* Constructor |
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* |
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* @param int $total_items Total number of items |
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* @param int $items_perpage Number of items per page |
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* @param int $current_start First item on the current page |
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* @param string $start_name Name for "start" or "offset" |
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* @param string $extra_arg Additional arguments to pass in the URL |
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**/ |
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public function __construct($total_items, $items_perpage, $current_start, $start_name = 'start', $extra_arg = '') |
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{ |
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$this->total = (int)$total_items; |
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$this->perpage = (int)$items_perpage; |
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$this->current = (int)$current_start; |
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if ('' !== $extra_arg && ('&' !== mb_substr($extra_arg, -5) || '&' !== mb_substr($extra_arg, -1))) { |
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$extra_arg .= '&'; |
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} |
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$this->url = $_SERVER['SCRIPT_NAME'] . '?' . $extra_arg . trim($start_name) . '='; |
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} |
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/** |
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* Create text navigation |
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* |
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* @param int $offset |
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* |
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* @return string |
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**/ |
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public function renderNav($offset = 4) |
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{ |
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$ret = ''; |
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if ($this->total <= $this->perpage) { |
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return $ret; |
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} |
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$total_pages = ceil($this->total / $this->perpage); |
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if ($total_pages > 1) { |
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$prev = $this->current - $this->perpage; |
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if ($prev >= 0) { |
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$ret .= '<a href="' . $this->url . $prev . '"><u>«</u></a> '; |
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} |
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$counter = 1; |
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$current_page = (int)floor(($this->current + $this->perpage) / $this->perpage); |
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while ($counter <= $total_pages) { |
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if ($counter == $current_page) { |
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$ret .= '<b>(' . $counter . ')</b> '; |
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} elseif (($counter > $current_page - $offset && $counter < $current_page + $offset) || 1 == $counter |
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|| $counter == $total_pages) { |
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if ($counter == $total_pages && $current_page < $total_pages - $offset) { |
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$ret .= '... '; |
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} |
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$ret .= '<a href="' . $this->url . (($counter - 1) * $this->perpage) . '">' . $counter . '</a> '; |
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if (1 == $counter && $current_page > 1 + $offset) { |
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$ret .= '... '; |
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} |
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} |
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++$counter; |
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} |
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$next = $this->current + $this->perpage; |
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if ($this->total > $next) { |
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$ret .= '<a href="' . $this->url . $next . '"><u>»</u></a> '; |
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} |
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} |
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return $ret; |
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} |
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/** |
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* Create a navigational dropdown list |
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* |
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* @param bool $showbutton Show the "Go" button? |
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* |
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* @return string |
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**/ |
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public function renderSelect($showbutton = false) |
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{ |
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if ($this->total < $this->perpage) { |
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return null; |
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} |
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$total_pages = ceil($this->total / $this->perpage); |
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$ret = ''; |
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if ($total_pages > 1) { |
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$ret = '<form name="pagenavform">'; |
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$ret .= '<select name="pagenavselect" onchange="location=this.options[this.options.selectedIndex].value;">'; |
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$counter = 1; |
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$current_page = (int)floor(($this->current + $this->perpage) / $this->perpage); |
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while ($counter <= $total_pages) { |
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if ($counter == $current_page) { |
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$ret .= '<option value="' . $this->url . (($counter - 1) * $this->perpage) . '" selected>' . $counter . '</option>'; |
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} else { |
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$ret .= '<option value="' . $this->url . (($counter - 1) * $this->perpage) . '">' . $counter . '</option>'; |
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} |
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++$counter; |
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} |
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$ret .= '</select>'; |
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if ($showbutton) { |
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$ret .= ' <input type="submit" value="' . _GO . '">'; |
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} |
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$ret .= '</form>'; |
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} |
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return $ret; |
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} |
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/** |
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* Create an enhanced navigational dropdown list |
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* |
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* @param bool $showbutton Show the "Go" button? |
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* @param null $titles |
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* |
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* @return string |
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*/ |
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public function renderEnhancedSelect($showbutton = false, $titles = null) |
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{ |
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if ($this->total < $this->perpage) { |
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return null; |
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} |
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$total_pages = ceil($this->total / $this->perpage); |
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$ret = ''; |
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if ($total_pages > 1) { |
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$ret = '<form name="pagenavform">'; |
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$ret .= '<select name="pagenavselect" onchange="location=this.options[this.options.selectedIndex].value;">'; |
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$counter = 1; |
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$current_page = (int)floor(($this->current + $this->perpage) / $this->perpage); |
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while ($counter <= $total_pages) { |
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if (isset($titles[$counter - 1])) { |
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$title = $titles[$counter - 1]; |
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} else { |
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$title = $counter; |
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} |
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if ($counter == $current_page) { |
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$ret .= '<option value="' . $this->url . (($counter - 1) * $this->perpage) . '" selected>' . $title . '</option>'; |
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} else { |
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$ret .= '<option value="' . $this->url . (($counter - 1) * $this->perpage) . '">' . $title . '</option>'; |
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} |
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++$counter; |
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} |
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$ret .= '</select>'; |
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if ($showbutton) { |
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$ret .= ' <input type="submit" value="' . _GO . '">'; |
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} |
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$ret .= '</form>'; |
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} |
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return $ret; |
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} |
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/** |
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* Create navigation with images |
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* |
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* @param int $offset |
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* |
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* @return string |
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**/ |
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public function renderImageNav($offset = 4) |
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{ |
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if ($this->total < $this->perpage) { |
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return null; |
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} |
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$total_pages = ceil($this->total / $this->perpage); |
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$ret = ''; |
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if ($total_pages > 1) { |
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$ret = '<table><tr>'; |
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$prev = $this->current - $this->perpage; |
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if ($prev >= 0) { |
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$ret .= '<td class="pagneutral"><a href="' . $this->url . $prev . '"><</a></td><td><img src="' . XOOPS_URL . '/images/blank.gif" width="6" alt=""></td>'; |
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} |
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$counter = 1; |
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$current_page = (int)floor(($this->current + $this->perpage) / $this->perpage); |
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while ($counter <= $total_pages) { |
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if ($counter == $current_page) { |
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$ret .= '<td class="pagact"><b>' . $counter . '</b></td>'; |
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} elseif (($counter > $current_page - $offset && $counter < $current_page + $offset) || 1 == $counter |
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|| $counter == $total_pages) { |
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if ($counter == $total_pages && $current_page < $total_pages - $offset) { |
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$ret .= '<td class="paginact">...</td>'; |
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} |
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$ret .= '<td class="paginact"><a href="' . $this->url . (($counter - 1) * $this->perpage) . '">' . $counter . '</a></td>'; |
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if (1 == $counter && $current_page > 1 + $offset) { |
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$ret .= '<td class="paginact">...</td>'; |
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} |
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} |
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++$counter; |
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} |
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$next = $this->current + $this->perpage; |
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if ($this->total > $next) { |
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$ret .= '<td><img src="' . XOOPS_URL . '/images/blank.gif" width="6" alt=""></td><td class="pagneutral"><a href="' . $this->url . $next . '">></a></td>'; |
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} |
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$ret .= '</tr></table>'; |
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} |
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return $ret; |
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} |
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} |
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