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jonen |
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<?php |
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/** |
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* This file contains the FEListBoxMaster |
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* |
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jonen |
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* $Id: FEListBoxMaster.inc,v 1.5 2004/06/04 20:08:58 hemna Exp $ |
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jonen |
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* |
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* @author Sumedh Thakar <sumedh_thakar@yahoo.com> |
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* @package phpHtmlLib |
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* @subpackage FormProcessing |
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* |
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* @copyright LGPL - See LICENCE |
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* |
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*/ |
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/** |
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* This element builds the master datalist that will control one slave datalist |
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* to change the value of the slave datalist when master changes in JS. It will also set |
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* the valid list for the slave depending on the value of the master. |
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* |
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* Please use regular FEListBox element for non-master lists. |
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* |
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* please examples area. |
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* |
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* @author Sumedh Thakar |
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*/ |
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class FEListBoxMaster extends FEListBox { |
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var $mdata = array(); |
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/** |
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* This function sets the array of data |
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* to be used in the data list |
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* |
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* @param array data_list - list of data elements (name=>value) |
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*/ |
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function set_list_data($data) { |
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$this->_mdata = $data; |
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$tmp = array(); |
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foreach($this->_mdata as $master => $rec){ |
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$tmp[$master] = isset($rec["code"])? $rec["code"] : $master; |
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} |
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$this->_data_list = $tmp; |
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} |
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/** |
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* This function will set the |
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* data the parent wants to set for the slave |
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* |
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* @param the slave |
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*/ |
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function set_slave_data(&$slave, $value) { |
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$flipped_array = array_flip($this->_data_list); |
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if (isset($flipped_array[$value])) $value = $flipped_array[$value]; |
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if (isset($value) && isset($this->_mdata[$value]["slave"])) { |
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$slave->set_list_data($this->_mdata[$value]["slave"]); |
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}else{ |
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$slave->set_list_data(array("None"=>"None")); |
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} |
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} |
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/** |
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* This method is used for adding any javascript |
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* that is used by this element. This will automatically |
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* get called and added to the page by the FormProcessor |
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* |
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* @return string - raw js |
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*/ |
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function javascript() { |
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$slaves = $this->get_slave_elements(); |
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$master_name = $this->get_element_name(); |
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$slave = $slaves[0]; |
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$slave_name = $slave->get_element_name(); |
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$gFlagName = $master_name."_".$slave_name."_defined"; |
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global $$gFlagName; |
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if (!isset($$gFlagName)) { |
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$$gFlagName = true; |
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//Create the JS array that will be used to populate the slave when master value changes |
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$js_array = "slave_".$slave_name." = new Array();\n"; |
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foreach($this->_mdata as $master => $rec){ |
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if(isset($rec['slave']) && is_array($rec['slave'])){ |
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$js_array .= "slave_".$slave_name."[\"".$rec['code']."\"] = new Array();\n"; |
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foreach($rec['slave'] as $slave => $slave_rec){ |
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$js_array .= "slave_".$slave_name."[\"".$rec['code']."\"][\"".$slave_rec."\"] = '".$slave."';\n"; |
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jonen |
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} |
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} |
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} |
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}else{ |
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$js_array = ""; |
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} |
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global $FEListBoxMaster_js; |
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if (!isset($FEListBoxMaster_js)) { |
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$FEListBoxMaster_js = true; |
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$js_str = <<<JSEND |
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function change_slave(master, slave, data) { |
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_name = master; |
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len = document.forms[0].elements[_name].length; |
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for (i=0;i<len;i++) |
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if (document.forms[0].elements[_name].options[i].selected) |
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break; |
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val = document.forms[0].elements[_name].options[i].value; |
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_name = slave; |
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i=0; |
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if (data[val] == null) { |
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nn = new Option("None"); |
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document.forms[0].elements[_name].options[0] = nn; |
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document.forms[0].elements[_name].options[0].value = "None"; |
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i++; |
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} |
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else { |
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for (var n in data[val]) { |
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nn = new Option(data[val][n]); |
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document.forms[0].elements[_name].options[i] = nn; |
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document.forms[0].elements[_name].options[i].value = n; |
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i++; |
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} |
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} |
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len = document.forms[0].elements[_name].length; |
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for (j=i;j<len;j++) |
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document.forms[0].elements[_name].options[i] = null; |
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} |
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JSEND; |
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}else{ |
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$js_str = ""; |
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} |
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return $js_array.$js_str; |
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} |
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/** |
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* this function retuns the javaScript code for |
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* an onChange event |
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* |
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* @return string - javascript code |
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*/ |
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function onChange() { |
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$master_name = $this->get_element_name(); |
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$slaves = $this->get_slave_elements(); |
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$slave = $slaves[0]; |
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$slave_name = $slave->get_element_name(); |
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return "change_slave('".$master_name."','".$slave_name."',slave_".$slave_name.")"; |
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} |
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} |
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?> |
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