[1] | 1 | <?php |
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| 2 | /** |
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| 3 | * SortOrder.inc.php |
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| 4 | * Code by Strangecode :: www.strangecode.com :: This document contains copyrighted information |
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[119] | 5 | * |
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[1] | 6 | * SortOrder can determing how to sort results of a database query for display |
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| 7 | * on a listing. It can print column headers that will be links to |
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| 8 | * automatically change the sort and order. |
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| 9 | * |
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| 10 | * @requires This class requires Prefs.inc.php |
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[42] | 11 | * |
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[1] | 12 | * @author Quinn Comendant <quinn@strangecode.com> |
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[119] | 13 | * @version 1.6.2 |
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[1] | 14 | */ |
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| 15 | require_once dirname(__FILE__) . '/Prefs.inc.php'; |
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| 16 | |
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| 17 | class SortOrder { |
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[42] | 18 | |
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[1] | 19 | var $_columns; |
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| 20 | var $sort_by; |
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| 21 | var $order; |
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[46] | 22 | var $asc_widget = '<img src="/admin/_widgets/sort_ascending.gif" alt="[ASC]" width="11" height="7" border="0" />'; |
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| 23 | var $desc_widget = '<img src="/admin/_widgets/sort_descending.gif" alt="[DESC]" width="11" height="7" border="0" />'; |
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[1] | 24 | var $default_sort; |
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| 25 | var $default_order; |
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[42] | 26 | |
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[1] | 27 | /** |
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| 28 | * Constructor. Finds the current sort by and order. |
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| 29 | * |
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| 30 | * @param string $default_sort If not found elsewhere, this will be the |
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| 31 | * current sort by. |
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| 32 | * @param string $default_order If not found elsewhere, this will be the |
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| 33 | * current order. |
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| 34 | */ |
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| 35 | function SortOrder($default_sort = '', $default_order = '') |
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[42] | 36 | { |
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[154] | 37 | $this->prefs = new Prefs($_SERVER['PHP_SELF']); |
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| 38 | $this->prefs->setParam(array('persistent' => false)); |
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| 39 | |
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[1] | 40 | $this->setDefault($default_sort, $default_order); |
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[42] | 41 | |
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[1] | 42 | $this->default_sort = $default_sort; |
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[154] | 43 | $this->default_order = $default_order; |
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[1] | 44 | } |
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[42] | 45 | |
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[1] | 46 | /** |
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[42] | 47 | * Build an array of valid sort SQL for each DB column. This SQL is reference |
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[1] | 48 | * by the name and 'asc' or 'desc'. |
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| 49 | * |
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| 50 | * @param string $name Reference name for the column this SQL sorts on. |
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| 51 | * @param string $asc_sql The sort SQL if $this->order is ascending. |
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| 52 | * @param string $desc_sql The sort SQL if $this->order is descending. |
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| 53 | */ |
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| 54 | function setColumn($name, $asc_sql, $desc_sql) |
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| 55 | { |
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| 56 | $this->_columns[$name] = array( |
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| 57 | 'asc' => $asc_sql, |
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| 58 | 'desc' => $desc_sql |
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| 59 | ); |
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| 60 | } |
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[42] | 61 | |
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[1] | 62 | /** |
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| 63 | * Set sort and order values. This is how you set new sort values after |
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| 64 | * already declaring a SortOrder object, but expect values to come from |
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| 65 | * getFormData. |
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| 66 | * |
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| 67 | * @param string $default_sort If not found elsewhere, this will be the |
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| 68 | * current sort by. |
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| 69 | * @param string $default_order If not found elsewhere, this will be the |
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| 70 | * current order. |
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| 71 | */ |
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| 72 | function setDefault($default_sort = '', $default_order = '') |
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| 73 | { |
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| 74 | // Which column to sort by? |
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| 75 | // (1) By GET or POST specification, if available. |
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| 76 | // (2) By saved preference, if available. |
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| 77 | // (3) By default (provided at class instantiation). |
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| 78 | $new_sort_by = getFormData('sort'); |
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| 79 | if (!empty($new_sort_by)) { |
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| 80 | $this->sort_by = $new_sort_by; |
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[153] | 81 | $this->prefs->set('sort_by', $this->sort_by); |
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| 82 | } else if ($this->prefs->exists('sort_by')) { |
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| 83 | $this->sort_by = $this->prefs->get('sort_by'); |
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[1] | 84 | } else { |
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| 85 | $this->sort_by = $default_sort; |
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| 86 | } |
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[42] | 87 | |
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[1] | 88 | // Which sort order to use? |
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| 89 | // (1) By GET or POST specification, if available. |
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| 90 | // (2) By saved preference, if available. |
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| 91 | // (3) By default (provided at class instanciation). |
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| 92 | $new_order = getFormData('order'); |
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| 93 | if (!empty($new_order)) { |
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| 94 | $this->order = $new_order; |
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[153] | 95 | $this->prefs->set('sort_order', $this->order); |
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| 96 | } else if ($this->prefs->exists('sort_order')) { |
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| 97 | $this->order = $this->prefs->get('sort_order'); |
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[1] | 98 | } else { |
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| 99 | $this->order = $default_order; |
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| 100 | } |
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| 101 | } |
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[42] | 102 | |
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| 103 | |
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[1] | 104 | /** |
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[44] | 105 | * Forcibly set sort and order values. This is how you set new sort values after |
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[1] | 106 | * already declaring a SortOrder object. This will ignore getFormData values. |
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| 107 | * |
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[44] | 108 | * @param string $sort The sort by name. |
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| 109 | * @param string $order The order direction (ASC, |
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[1] | 110 | * for example, for an alphabetical sort) |
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| 111 | */ |
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| 112 | function set($sort = null, $order = null) |
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| 113 | { |
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| 114 | // Set new sort value. |
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| 115 | if (isset($sort)) { |
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| 116 | $this->sort_by = $sort; |
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[153] | 117 | $this->prefs->set('sort_by', $this->sort_by); |
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[1] | 118 | } |
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[42] | 119 | |
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[1] | 120 | // Set new order value. |
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| 121 | if (isset($order)) { |
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| 122 | $this->order = $order; |
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[153] | 123 | $this->prefs->set('sort_order', $this->order); |
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[1] | 124 | } |
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| 125 | } |
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[42] | 126 | |
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| 127 | |
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[1] | 128 | /** |
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| 129 | * Returns the SQL code to sort by set column and set order. |
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| 130 | */ |
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| 131 | function getSortOrderSQL() |
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| 132 | { |
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[136] | 133 | $app =& App::getInstance(); |
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| 134 | $db =& DB::getInstance(); |
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| 135 | |
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[1] | 136 | if (!isset($this->_columns[strtolower($this->sort_by)])) { |
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| 137 | $this->sort_by = $this->default_sort; |
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| 138 | $this->order = $this->default_order; |
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| 139 | } |
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| 140 | if (!isset($this->_columns[strtolower($this->sort_by)][strtolower($this->order)])) { |
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| 141 | $this->order = 'ASC'; |
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| 142 | } |
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| 143 | |
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[20] | 144 | if (!empty($this->_columns[strtolower($this->sort_by)][strtolower($this->order)])) { |
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[136] | 145 | return sprintf(' ORDER BY %s ', $db->escapeString($this->_columns[strtolower($this->sort_by)][strtolower($this->order)])); |
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[1] | 146 | } else { |
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[136] | 147 | $app->logMsg(sprintf('Could not find SQL to sort by %s %s.', $this->sort_by, $this->order), LOG_WARNING, __FILE__, __LINE__); |
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[1] | 148 | return ''; |
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| 149 | } |
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[42] | 150 | } |
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| 151 | |
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| 152 | |
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[1] | 153 | /** |
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| 154 | * Prints a link for a column header with URL sort determining logic. |
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| 155 | * |
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| 156 | * @param string $col The database column to sort by. |
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| 157 | * @param string $col_name The human-readable title of the column. |
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| 158 | * @param string $default_order The default order for this column (ASC, |
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| 159 | * for example, for an alphabetical sort) |
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| 160 | */ |
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| 161 | function printSortHeader($col, $col_name, $default_order='ASC') |
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| 162 | { |
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[136] | 163 | $app =& App::getInstance(); |
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| 164 | |
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[1] | 165 | if ($this->sort_by == $col) { |
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| 166 | if (strtolower($this->order) == 'desc') { |
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[136] | 167 | ?><a href="<?php echo $app->oHREF($_SERVER['PHP_SELF'] . '?sort=' . $col . '&order=ASC'); ?>" title="<?php echo _("Change to ascending sort order"); ?>"><?php echo $this->desc_widget; ?></a><?php echo $col_name; ?><?php |
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[1] | 168 | } else { |
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[136] | 169 | ?><a href="<?php echo $app->oHREF($_SERVER['PHP_SELF'] . '?sort=' . $col . '&order=DESC'); ?>" title="<?php echo _("Change to descending sort order"); ?>"><?php echo $this->asc_widget; ?></a><?php echo $col_name; ?><?php |
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[1] | 170 | } |
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| 171 | } else { |
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[136] | 172 | ?><a href="<?php echo $app->oHREF($_SERVER['PHP_SELF'] . '?sort=' . $col . '&order=' . $default_order); ?>" title="<?php echo sprintf(_("Sort by %s"), $col_name); ?>"><?php echo $col_name; ?></a><?php |
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[1] | 173 | } |
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[42] | 174 | } |
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[1] | 175 | |
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| 176 | } |
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| 177 | |
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| 178 | ?> |
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