Improved js controls for null/not null fields and fixed js bugs with the MSIE autocomplete feature

libraries/tbl_change.js

@@ -0,0 +1,59 @@
+/* $Id$ */
+
+
+/**
+ * Modify from controls when the "NULL" checkbox is selected
+ *
+ * @param   string   the MySQL field type
+ * @param   string   the urlencoded field name
+ * @param   string   the md5 hashed field name
+ *
+ * @return  boolean  always true
+ */
+function nullify(theType, urlField, md5Field)
+{
+    var rowForm = document.forms['insertForm'];
+
+    if (typeof(rowForm.elements['funcs[' + urlField + ']']) != 'undefined') {
+        rowForm.elements['funcs[' + urlField + ']'].selectedIndex = -1;
+    }
+
+    // "SET" field or "ENUM" field with more than 20 characters
+    if (theType == 1 || theType == 3) {
+        rowForm.elements['field_' + md5Field + '[]'].selectedIndex = -1;
+    }
+    // Other "ENUM" field
+    else if (theType == 2) {
+        var elts     = rowForm.elements['field_' + md5Field + '[]'];
+        var elts_cnt = elts.length;
+        for (var i = 0; i < elts_cnt; i++ ) {
+            elts[i].checked = false;
+        } // end for
+    }
+    // Other field types
+    else /*if (theType == 4)*/ {
+        rowForm.elements['fields[' + urlField + ']'].value = '';
+    } // end if... else if... else
+
+    return true;
+} // end of the 'nullify()' function
+
+
+/**
+ * Unchecks the "NULL" control when a function has been selected or a value
+ * entered
+ *
+ * @param   string   the urlencoded field name
+ *
+ * @return  boolean  always true
+ */
+function unNullify(urlField)
+{
+    var rowForm = document.forms['insertForm'];
+
+    if (typeof(rowForm.elements['fields_null[' + urlField + ']']) != 'undefined') {
+        rowForm.elements['fields_null[' + urlField + ']'].checked = false
+    } // end if
+
+    return true;
+} // end of the 'unNullify()' function