libraries/indexes.js

   1 /* $Id$ */
   2
   3
   4 /**
   5  * Ensures a value submitted in a form is numeric and is in a range
   6  *
   7  * @param   object   the form
   8  * @param   string   the name of the form field to check
   9  * @param   integer  the minimum authorized value
  10  * @param   integer  the maximum authorized value
  11  *
  12  * @return  boolean  whether a valid number has been submitted or not
  13  */
  14 function checkFormElementInRange(theForm, theFieldName, message, min, max)
  15 {
  16     var theField         = theForm.elements[theFieldName];
  17     var val              = parseInt(theField.value);
  18
  19     if (typeof(min) == 'undefined') {
  20         min = 0;
  21     }
  22     if (typeof(max) == 'undefined') {
  23         max = Number.MAX_VALUE;
  24     }
  25
  26     // It's not a number
  27     if (isNaN(val)) {
  28         theField.select();
  29         alert(errorMsg1);
  30         theField.focus();
  31         return false;
  32     }
  33     // It's a number but it is not between min and max
  34     else if (val < min || val > max) {
  35         theField.select();
  36         alert(message.replace('%d', val));
  37         theField.focus();
  38         return false;
  39     }
  40     // It's a valid number
  41     else {
  42         theField.value = val;
  43     }
  44
  45     return true;
  46 } // end of the 'checkFormElementInRange()' function
  47
  48
  49 /**
  50  * Ensures indexes names are valid according to their type and, for a primary
  51  * key, lock index name to 'PRIMARY'
  52  *
  53  * @return  boolean  false if there is no index form, true else
  54  */
  55 function checkIndexName()
  56 {
  57     if (typeof(document.forms['index_frm']) == 'undefined') {
  58         return false;
  59     }
  60
  61     // Gets the elements pointers
  62     var the_idx_name = document.forms['index_frm'].elements['index'];
  63     var the_idx_type = document.forms['index_frm'].elements['index_type'];
  64
  65     // Index is a primary key
  66     if (the_idx_type.options[0].value == 'PRIMARY' && the_idx_type.options[0].selected) {
  67         document.forms['index_frm'].elements['index'].value = 'PRIMARY';
  68         if (typeof(the_idx_name.disabled) != 'undefined') {
  69             document.forms['index_frm'].elements['index'].disabled = true;
  70         }
  71     }
  72
  73     // Other cases
  74     else {
  75         if (the_idx_name.value == 'PRIMARY') {
  76             document.forms['index_frm'].elements['index'].value = '';
  77         }
  78         if (typeof(the_idx_name.disabled) != 'undefined') {
  79             document.forms['index_frm'].elements['index'].disabled = false;
  80         }
  81     }
  82
  83     return true;
  84 } // end of the 'checkIndexName()' function
  85
  86
  87 onload = checkIndexName;