| 1 |
<?php |
| 2 |
/** |
| 3 |
* This file contains the FEListBoxMaster |
| 4 |
* |
| 5 |
* $Id: FEListBoxMaster.inc,v 1.3 2004/04/01 02:32:08 sumedh_thakar Exp $ |
| 6 |
* |
| 7 |
* @author Sumedh Thakar <sumedh_thakar@yahoo.com> |
| 8 |
* @package phpHtmlLib |
| 9 |
* @subpackage FormProcessing |
| 10 |
* |
| 11 |
* @copyright LGPL - See LICENCE |
| 12 |
* |
| 13 |
*/ |
| 14 |
|
| 15 |
/** |
| 16 |
* This element builds the master datalist that will control one slave datalist |
| 17 |
* to change the value of the slave datalist when master changes in JS. It will also set |
| 18 |
* the valid list for the slave depending on the value of the master. |
| 19 |
* |
| 20 |
* Please use regular FEListBox element for non-master lists. |
| 21 |
* |
| 22 |
* please examples area. |
| 23 |
* |
| 24 |
* @author Sumedh Thakar |
| 25 |
*/ |
| 26 |
class FEListBoxMaster extends FEListBox { |
| 27 |
|
| 28 |
var $mdata = array(); |
| 29 |
/** |
| 30 |
* This function sets the array of data |
| 31 |
* to be used in the data list |
| 32 |
* |
| 33 |
* @param array data_list - list of data elements (name=>value) |
| 34 |
*/ |
| 35 |
function set_list_data($data) { |
| 36 |
|
| 37 |
$this->_mdata = $data; |
| 38 |
|
| 39 |
$tmp = array(); |
| 40 |
foreach($this->_mdata as $master => $rec){ |
| 41 |
$tmp[$master] = isset($rec["code"])? $rec["code"] : $master; |
| 42 |
} |
| 43 |
|
| 44 |
$this->_data_list = $tmp; |
| 45 |
} |
| 46 |
|
| 47 |
/** |
| 48 |
* This function will set the |
| 49 |
* data the parent wants to set for the slave |
| 50 |
* |
| 51 |
* @param the slave |
| 52 |
*/ |
| 53 |
function set_slave_data(&$slave,$value) { |
| 54 |
if (isset($value) && isset($this->_mdata[$value]["slave"])) { |
| 55 |
$slave->set_list_data($this->_mdata[$value]["slave"]); |
| 56 |
}else{ |
| 57 |
$slave->set_list_data(array("None"=>"None")); |
| 58 |
} |
| 59 |
} |
| 60 |
|
| 61 |
/** |
| 62 |
* This method is used for adding any javascript |
| 63 |
* that is used by this element. This will automatically |
| 64 |
* get called and added to the page by the FormProcessor |
| 65 |
* |
| 66 |
* @return string - raw js |
| 67 |
*/ |
| 68 |
function javascript() { |
| 69 |
$slaves = $this->get_slave_elements(); |
| 70 |
$master_name = $this->get_element_name(); |
| 71 |
$slave = $slaves[0]; |
| 72 |
$slave_name = $slave->get_element_name(); |
| 73 |
$gFlagName = $master_name."_".$slave_name."_defined"; |
| 74 |
|
| 75 |
|
| 76 |
global $$gFlagName; |
| 77 |
|
| 78 |
if (!isset($$gFlagName)) { |
| 79 |
$$gFlagName = true; |
| 80 |
//Create the JS array that will be used to populate the slave when master value changes |
| 81 |
$js_array = "slave_".$slave_name." = new Array();\n"; |
| 82 |
foreach($this->_mdata as $master => $rec){ |
| 83 |
if(isset($rec['slave']) && is_array($rec['slave'])){ |
| 84 |
$js_array .= "slave_".$slave_name."[\"".$master."\"] = new Array();\n"; |
| 85 |
foreach($rec['slave'] as $slave => $slave_rec){ |
| 86 |
$js_array .= "slave_".$slave_name."[\"".$master."\"][\"".$slave_rec."\"] = '".$slave."';\n"; |
| 87 |
} |
| 88 |
} |
| 89 |
} |
| 90 |
}else{ |
| 91 |
$js_array = ""; |
| 92 |
} |
| 93 |
|
| 94 |
global $FEListBoxMaster_js; |
| 95 |
|
| 96 |
if (!isset($FEListBoxMaster_js)) { |
| 97 |
|
| 98 |
$FEListBoxMaster_js = true; |
| 99 |
|
| 100 |
$js_str = <<<JSEND |
| 101 |
function change_slave(master, slave, data) { |
| 102 |
_name = master; |
| 103 |
len = document.forms[0].elements[_name].length; |
| 104 |
for (i=0;i<len;i++) |
| 105 |
if (document.forms[0].elements[_name].options[i].selected) |
| 106 |
break; |
| 107 |
val = document.forms[0].elements[_name].options[i].value; |
| 108 |
|
| 109 |
_name = slave; |
| 110 |
i=0; |
| 111 |
if (data[val] == null) { |
| 112 |
nn = new Option("None"); |
| 113 |
document.forms[0].elements[_name].options[0] = nn; |
| 114 |
document.forms[0].elements[_name].options[0].value = "None"; |
| 115 |
i++; |
| 116 |
} |
| 117 |
else { |
| 118 |
for (var n in data[val]) { |
| 119 |
nn = new Option(data[val][n]); |
| 120 |
document.forms[0].elements[_name].options[i] = nn; |
| 121 |
document.forms[0].elements[_name].options[i].value = n; |
| 122 |
i++; |
| 123 |
} |
| 124 |
} |
| 125 |
|
| 126 |
len = document.forms[0].elements[_name].length; |
| 127 |
for (j=i;j<len;j++) |
| 128 |
document.forms[0].elements[_name].options[i] = null; |
| 129 |
} |
| 130 |
|
| 131 |
JSEND; |
| 132 |
|
| 133 |
}else{ |
| 134 |
$js_str = ""; |
| 135 |
} |
| 136 |
return $js_array.$js_str; |
| 137 |
} |
| 138 |
/** |
| 139 |
* this function retuns the javaScript code for |
| 140 |
* an onChange event |
| 141 |
* |
| 142 |
* @return string - javascript code |
| 143 |
*/ |
| 144 |
function onChange() { |
| 145 |
$master_name = $this->get_element_name(); |
| 146 |
$slaves = $this->get_slave_elements(); |
| 147 |
$slave = $slaves[0]; |
| 148 |
$slave_name = $slave->get_element_name(); |
| 149 |
|
| 150 |
return "change_slave('".$master_name."','".$slave_name."',slave_".$slave_name.")"; |
| 151 |
} |
| 152 |
|
| 153 |
|
| 154 |
} |
| 155 |
?> |
Parent Directory
| 
Revision Log
