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<?php
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/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
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/**
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 * Contains the Pager_HtmlWidgets class
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 *
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 * PHP versions 4 and 5
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 *
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 * LICENSE: Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. The name of the author may not be used to endorse or promote products
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 *    derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
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 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE FREEBSD PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY
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 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 *
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 * @category   HTML
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 * @package    Pager
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 * @author     Lorenzo Alberton <l dot alberton at quipo dot it>
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 * @copyright  2003-2006 Lorenzo Alberton
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 * @license    http://www.debian.org/misc/bsd.license  BSD License (3 Clause)
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 * @version    CVS: $Id: HtmlWidgets.php,v 1.2 2007-11-06 10:54:04 jp_milcent Exp $
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 * @link       http://pear.php.net/package/Pager
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 */
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/**
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 * Two constants used to guess the path- and file-name of the page
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 * when the user doesn't set any other value
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 */
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class Pager_HtmlWidgets
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{
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    var $pager = null;
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    // {{{ constructor
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    function Pager_HtmlWidgets(&$pager)
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    {
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        $this->pager =& $pager;
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    }
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    // }}}
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    // {{{ getPerPageSelectBox()
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    /**
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     * Returns a string with a XHTML SELECT menu,
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     * useful for letting the user choose how many items per page should be
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     * displayed. If parameter useSessions is TRUE, this value is stored in
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     * a session var. The string isn't echoed right now so you can use it
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     * with template engines.
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     *
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     * @param integer $start
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     * @param integer $end
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     * @param integer $step
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     * @param boolean $showAllData If true, perPage is set equal to totalItems.
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     * @param array   (or string $optionText for BC reasons)
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     *                - 'optionText': text to show in each option.
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     *                  Use '%d' where you want to see the number of pages selected.
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     *                - 'attributes': (html attributes) Tag attributes or
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     *                  HTML attributes (id="foo" pairs), will be inserted in the
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     *                  <select> tag
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     *                - 'checkMaxLimit': if true, Pager checks if $end is bigger
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     *                  than $totalItems, and doesn't show the extra select options
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     * @return string xhtml select box
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     * @access public
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     */
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    function getPerPageSelectBox($start=5, $end=30, $step=5, $showAllData=false, $extraParams=array())
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    {
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        // FIXME: needs POST support
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        $optionText = '%d';
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        $attributes = '';
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        $checkMaxLimit = false;
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        if (is_string($extraParams)) {
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            //old behavior, BC maintained
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            $optionText = $extraParams;
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        } else {
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            if (array_key_exists('optionText', $extraParams)) {
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                $optionText = $extraParams['optionText'];
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            }
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            if (array_key_exists('attributes', $extraParams)) {
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                $attributes = $extraParams['attributes'];
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            }
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            if (array_key_exists('checkMaxLimit', $extraParams)) {
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                $checkMaxLimit = $extraParams['checkMaxLimit'];
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            }
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        }
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        if (!strstr($optionText, '%d')) {
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            return $this->pager->raiseError(
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                $this->pager->errorMessage(ERROR_PAGER_INVALID_PLACEHOLDER),
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                ERROR_PAGER_INVALID_PLACEHOLDER
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            );
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        }
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        $start = (int)$start;
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        $end   = (int)$end;
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        $step  = (int)$step;
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        if (!empty($_SESSION[$this->pager->_sessionVar])) {
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            $selected = (int)$_SESSION[$this->pager->_sessionVar];
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        } else {
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            $selected = $this->pager->_perPage;
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        }
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        if ($checkMaxLimit && $this->pager->_totalItems > 0 && $this->pager->_totalItems < $end) {
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            $end = $this->pager->_totalItems;
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        }
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        $tmp = '<select name="'.$this->pager->_sessionVar.'"';
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        if (!empty($attributes)) {
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            $tmp .= ' '.$attributes;
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        }
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        $tmp .= '>';
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        $last = $start;
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        for ($i=$start; $i<=$end; $i+=$step) {
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            $last = $i;
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            $tmp .= '<option value="'.$i.'"';
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            if ($i == $selected) {
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                $tmp .= ' selected="selected"';
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            }
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            $tmp .= '>'.sprintf($optionText, $i).'</option>';
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        }
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        if ($showAllData && $last != $this->pager->_totalItems) {
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            $tmp .= '<option value="'.$this->pager->_totalItems.'"';
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            if ($this->pager->_totalItems == $selected) {
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                $tmp .= ' selected="selected"';
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            }
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            $tmp .= '>';
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            if (empty($this->pager->_showAllText)) {
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                $tmp .= str_replace('%d', $this->pager->_totalItems, $optionText);
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            } else {
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                $tmp .= $this->pager->_showAllText;
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            }
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            $tmp .= '</option>';
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        }
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        $tmp .= '</select>';
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        return $tmp;
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    }
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    // }}}
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    // {{{ getPageSelectBox()
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    /**
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     * Returns a string with a XHTML SELECT menu with the page numbers,
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     * useful as an alternative to the links
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     *
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     * @param array   - 'optionText': text to show in each option.
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     *                  Use '%d' where you want to see the number of pages selected.
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     *                - 'autoSubmit': if TRUE, add some js code to submit the
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     *                  form on the onChange event
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     * @param string    $extraAttributes (html attributes) Tag attributes or
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     *                  HTML attributes (id="foo" pairs), will be inserted in the
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     *                  <select> tag
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     * @return string xhtml select box
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     * @access public
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     */
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    function getPageSelectBox($params = array(), $extraAttributes = '')
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    {
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        $optionText = '%d';
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        if (array_key_exists('optionText', $params)) {
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            $optionText = $params['optionText'];
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        }
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        if (!strstr($optionText, '%d')) {
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            return $this->pager->raiseError(
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                $this->pager->errorMessage(ERROR_PAGER_INVALID_PLACEHOLDER),
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                ERROR_PAGER_INVALID_PLACEHOLDER
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            );
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        }
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        $tmp = '<select name="'.$this->pager->_urlVar.'"';
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        if (!empty($extraAttributes)) {
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            $tmp .= ' '.$extraAttributes;
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        }
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        if (!empty($params['autoSubmit'])) {
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            if ($this->pager->_httpMethod == 'GET') {
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                $selector = '\' + '.'this.options[this.selectedIndex].value + \'';
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                if ($this->pager->_append) {
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                    $href = '?' . $this->pager->_http_build_query_wrapper($this->pager->_linkData);
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                    $href = htmlentities($this->pager->_url). preg_replace(
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                        '/(&|&amp;|\?)('.$this->pager->_urlVar.'=)(\d+)/',
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                        '\\1\\2'.$selector,
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                        htmlentities($href)
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                    );
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                } else {
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                    $href = htmlentities($this->pager->_url . str_replace('%d', $selector, $this->pager->_fileName));
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                }
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                $tmp .= ' onchange="document.location.href=\''
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                     . $href .'\''
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                     . '"';
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            } elseif ($this->pager->_httpMethod == 'POST') {
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                $tmp .= " onchange='"
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                     . $this->pager->_generateFormOnClick($this->pager->_url, $this->pager->_linkData)
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                     . "'";
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                $tmp = preg_replace(
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                    '/(input\.name = \"'.$this->pager->_urlVar.'\"; input\.value =) \"(\d+)\";/',
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                    '\\1 this.options[this.selectedIndex].value;',
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                    $tmp
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                );
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            }
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        }
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        $tmp .= '>';
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        $start = 1;
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        $end = $this->pager->numPages();
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        $selected = $this->pager->getCurrentPageID();
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        for ($i=$start; $i<=$end; $i++) {
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            $tmp .= '<option value="'.$i.'"';
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            if ($i == $selected) {
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                $tmp .= ' selected="selected"';
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            }
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            $tmp .= '>'.sprintf($optionText, $i).'</option>';
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        }
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        $tmp .= '</select>';
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        return $tmp;
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    }
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    // }}}
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}
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?>