* @author Bertrand Mansion * @author Alexey Borzov * @copyright 2001-2009 The PHP Group * @license http://www.php.net/license/3_01.txt PHP License 3.01 * @version CVS: $Id: hierselect.php,v 1.20 2009/04/04 21:34:03 avb Exp $ * @link http://pear.php.net/package/HTML_QuickForm */ /** * Hierarchical select element * * Class to dynamically create two or more HTML Select elements * The first select changes the content of the second select and so on. * This element is considered as a group. Selects will be named * groupName[0], groupName[1], groupName[2]... * * @category HTML * @package HTML_QuickForm * @author Herim Vasquez * @author Bertrand Mansion * @author Alexey Borzov * @version Release: 3.2.11 * @since 3.1 */ class HTML_QuickForm_hierselect extends HTML_QuickForm_group { // {{{ properties /** * Options for all the select elements * * @see setOptions() * @var array * @access private */ var $_options = array(); /** * Number of select elements on this group * * @var int * @access private */ var $_nbElements = 0; /** * The javascript used to set and change the options * * @var string * @access private */ var $_js = ''; // }}} // {{{ constructor /** * Class constructor * * @param string $elementName (optional)Input field name attribute * @param string $elementLabel (optional)Input field label in form * @param mixed $attributes (optional)Either a typical HTML attribute string * or an associative array. Date format is passed along the attributes. * @param mixed $separator (optional)Use a string for one separator, * use an array to alternate the separators. * @access public * @return void */ function HTML_QuickForm_hierselect($elementName=null, $elementLabel=null, $attributes=null, $separator=null) { $this->HTML_QuickForm_element($elementName, $elementLabel, $attributes); $this->_persistantFreeze = true; if (isset($separator)) { $this->_separator = $separator; } $this->_type = 'hierselect'; $this->_appendName = true; } //end constructor // }}} // {{{ setOptions() /** * Initialize the array structure containing the options for each select element. * Call the functions that actually do the magic. * * Format is a bit more complex than for a simple select as we need to know * which options are related to the ones in the previous select: * * Ex: * * // first select * $select1[0] = 'Pop'; * $select1[1] = 'Classical'; * $select1[2] = 'Funeral doom'; * * // second select * $select2[0][0] = 'Red Hot Chil Peppers'; * $select2[0][1] = 'The Pixies'; * $select2[1][0] = 'Wagner'; * $select2[1][1] = 'Strauss'; * $select2[2][0] = 'Pantheist'; * $select2[2][1] = 'Skepticism'; * * // If only need two selects * // - and using the deprecated functions * $sel =& $form->addElement('hierselect', 'cds', 'Choose CD:'); * $sel->setMainOptions($select1); * $sel->setSecOptions($select2); * * // - and using the new setOptions function * $sel =& $form->addElement('hierselect', 'cds', 'Choose CD:'); * $sel->setOptions(array($select1, $select2)); * * // If you have a third select with prices for the cds * $select3[0][0][0] = '15.00$'; * $select3[0][0][1] = '17.00$'; * // etc * * // You can now use * $sel =& $form->addElement('hierselect', 'cds', 'Choose CD:'); * $sel->setOptions(array($select1, $select2, $select3)); * * * @param array $options Array of options defining each element * @access public * @return void */ function setOptions($options) { $this->_options = $options; if (empty($this->_elements)) { $this->_nbElements = count($this->_options); $this->_createElements(); } else { // setDefaults has probably been called before this function // check if all elements have been created $totalNbElements = count($this->_options); for ($i = $this->_nbElements; $i < $totalNbElements; $i ++) { $this->_elements[] =& new HTML_QuickForm_select($i, null, array(), $this->getAttributes()); $this->_nbElements++; } } $this->_setOptions(); } // end func setMainOptions // }}} // {{{ setMainOptions() /** * Sets the options for the first select element. Deprecated. setOptions() should be used. * * @param array $array Options for the first select element * * @access public * @deprecated Deprecated since release 3.2.2 * @return void */ function setMainOptions($array) { $this->_options[0] = $array; if (empty($this->_elements)) { $this->_nbElements = 2; $this->_createElements(); } } // end func setMainOptions // }}} // {{{ setSecOptions() /** * Sets the options for the second select element. Deprecated. setOptions() should be used. * The main _options array is initialized and the _setOptions function is called. * * @param array $array Options for the second select element * * @access public * @deprecated Deprecated since release 3.2.2 * @return void */ function setSecOptions($array) { $this->_options[1] = $array; if (empty($this->_elements)) { $this->_nbElements = 2; $this->_createElements(); } else { // setDefaults has probably been called before this function // check if all elements have been created $totalNbElements = 2; for ($i = $this->_nbElements; $i < $totalNbElements; $i ++) { $this->_elements[] =& new HTML_QuickForm_select($i, null, array(), $this->getAttributes()); $this->_nbElements++; } } $this->_setOptions(); } // end func setSecOptions // }}} // {{{ _setOptions() /** * Sets the options for each select element * * @access private * @return void */ function _setOptions() { $toLoad = ''; foreach (array_keys($this->_elements) AS $key) { $array = eval("return isset(\$this->_options[{$key}]{$toLoad})? \$this->_options[{$key}]{$toLoad}: null;"); if (is_array($array)) { $select =& $this->_elements[$key]; $select->_options = array(); $select->loadArray($array); $value = is_array($v = $select->getValue()) ? $v[0] : key($array); $toLoad .= '[\'' . str_replace(array('\\', '\''), array('\\\\', '\\\''), $value) . '\']'; } } } // end func _setOptions // }}} // {{{ setValue() /** * Sets values for group's elements * * @param array $value An array of 2 or more values, for the first, * the second, the third etc. select * * @access public * @return void */ function setValue($value) { // fix for bug #6766. Hope this doesn't break anything more // after bug #7961. Forgot that _nbElements was used in // _createElements() called in several places... $this->_nbElements = max($this->_nbElements, count($value)); parent::setValue($value); $this->_setOptions(); } // end func setValue // }}} // {{{ _createElements() /** * Creates all the elements for the group * * @access private * @return void */ function _createElements() { for ($i = 0; $i < $this->_nbElements; $i++) { $this->_elements[] =& new HTML_QuickForm_select($i, null, array(), $this->getAttributes()); } } // end func _createElements // }}} // {{{ toHtml() function toHtml() { $this->_js = ''; if (!$this->_flagFrozen) { // set the onchange attribute for each element except last $keys = array_keys($this->_elements); $onChange = array(); for ($i = 0; $i < count($keys) - 1; $i++) { $select =& $this->_elements[$keys[$i]]; $onChange[$i] = $select->getAttribute('onchange'); $select->updateAttributes( array('onchange' => '_hs_swapOptions(this.form, \'' . $this->_escapeString($this->getName()) . '\', ' . $keys[$i] . ');' . $onChange[$i]) ); } // create the js function to call if (!defined('HTML_QUICKFORM_HIERSELECT_EXISTS')) { $this->_js .= <<_nbElements; $i++) { $jsParts[] = $this->_convertArrayToJavascript($this->_options[$i]); } $this->_js .= "\n_hs_options['" . $this->_escapeString($this->getName()) . "'] = [\n" . implode(",\n", $jsParts) . "\n];\n"; // default value; if we don't actually have any values yet just use // the first option (for single selects) or empty array (for multiple) $values = array(); foreach (array_keys($this->_elements) as $key) { if (is_array($v = $this->_elements[$key]->getValue())) { $values[] = count($v) > 1? $v: $v[0]; } else { // XXX: accessing the supposedly private _options array $values[] = $this->_elements[$key]->getMultiple() || empty($this->_elements[$key]->_options[0])? array(): $this->_elements[$key]->_options[0]['attr']['value']; } } $this->_js .= "_hs_defaults['" . $this->_escapeString($this->getName()) . "'] = " . $this->_convertArrayToJavascript($values, false) . ";\n"; } include_once('HTML/QuickForm/Renderer/Default.php'); $renderer =& new HTML_QuickForm_Renderer_Default(); $renderer->setElementTemplate('{element}'); parent::accept($renderer); if (!empty($onChange)) { $keys = array_keys($this->_elements); for ($i = 0; $i < count($keys) - 1; $i++) { $this->_elements[$keys[$i]]->updateAttributes(array('onchange' => $onChange[$i])); } } return (empty($this->_js)? '': "") . $renderer->toHtml(); } // end func toHtml // }}} // {{{ accept() function accept(&$renderer, $required = false, $error = null) { $renderer->renderElement($this, $required, $error); } // end func accept // }}} // {{{ onQuickFormEvent() function onQuickFormEvent($event, $arg, &$caller) { if ('updateValue' == $event) { // we need to call setValue() so that the secondary option // matches the main option return HTML_QuickForm_element::onQuickFormEvent($event, $arg, $caller); } else { $ret = parent::onQuickFormEvent($event, $arg, $caller); // add onreset handler to form to properly reset hierselect (see bug #2970) if ('addElement' == $event) { $onReset = $caller->getAttribute('onreset'); if (strlen($onReset)) { if (strpos($onReset, '_hs_setupOnReset')) { $caller->updateAttributes(array('onreset' => str_replace('_hs_setupOnReset(this, [', "_hs_setupOnReset(this, ['" . $this->_escapeString($this->getName()) . "', ", $onReset))); } else { $caller->updateAttributes(array('onreset' => "var temp = function() { {$onReset} } ; if (!temp()) { return false; } ; if (typeof _hs_setupOnReset != 'undefined') { return _hs_setupOnReset(this, ['" . $this->_escapeString($this->getName()) . "']); } ")); } } else { $caller->updateAttributes(array('onreset' => "if (typeof _hs_setupOnReset != 'undefined') { return _hs_setupOnReset(this, ['" . $this->_escapeString($this->getName()) . "']); } ")); } } return $ret; } } // end func onQuickFormEvent // }}} // {{{ _convertArrayToJavascript() /** * Converts PHP array to its Javascript analog * * @access private * @param array PHP array to convert * @param bool Generate Javascript object literal (default, works like PHP's associative array) or array literal * @return string Javascript representation of the value */ function _convertArrayToJavascript($array, $assoc = true) { if (!is_array($array)) { return $this->_convertScalarToJavascript($array); } else { $items = array(); foreach ($array as $key => $val) { $item = $assoc? "'" . $this->_escapeString($key) . "': ": ''; if (is_array($val)) { $item .= $this->_convertArrayToJavascript($val, $assoc); } else { $item .= $this->_convertScalarToJavascript($val); } $items[] = $item; } } $js = implode(', ', $items); return $assoc? '{ ' . $js . ' }': '[' . $js . ']'; } // }}} // {{{ _convertScalarToJavascript() /** * Converts PHP's scalar value to its Javascript analog * * @access private * @param mixed PHP value to convert * @return string Javascript representation of the value */ function _convertScalarToJavascript($val) { if (is_bool($val)) { return $val ? 'true' : 'false'; } elseif (is_int($val) || is_double($val)) { return $val; } elseif (is_string($val)) { return "'" . $this->_escapeString($val) . "'"; } elseif (is_null($val)) { return 'null'; } else { // don't bother return '{}'; } } // }}} // {{{ _escapeString() /** * Quotes the string so that it can be used in Javascript string constants * * @access private * @param string * @return string */ function _escapeString($str) { return strtr($str,array( "\r" => '\r', "\n" => '\n', "\t" => '\t', "'" => "\\'", '"' => '\"', '\\' => '\\\\' )); } // }}} } // end class HTML_QuickForm_hierselect ?>