improved js validation tests (and reduced server charge)

2001-08-07 17:54:48 +00:00
parent ca2e2f534e
commit a681a9b6ce
3 changed files with 111 additions and 12 deletions
--- a/functions.js
+++ b/functions.js
@@ -1,13 +1,93 @@
 /* $Id$ */


+/**
+ * Displays an error message if the user submitted the sql query form with no
+ * sql query
+ *
+ * @param   object   the form
+ *
+ * @return  boolean  always false
+ */
+function emptySqlQuery(theForm)
+{
+    var sqlQuery1 = theForm.elements['sql_query'];
+    var isRegExp  = (typeof(sqlQuery1.value.replace) != 'undefined');
+
+    // The replace function (js1.2) isn't supported -> basic tests
+    if (!isRegExp) {
+        var isEmpty          = (sqlQuery1.value == '') ? 1 : 0;
+        if (isEmpty && typeof(theForm.elements['sql_file']) != 'undefined') {
+            isEmpty          = (theForm.elements['sql_file'].value == '') ? 1 : 0;
+        }
+        if (isEmpty && typeof(theForm.elements['id_bookmark']) != 'undefined') {
+            isEmpty          = (theForm.elements['id_bookmark'].value == '') ? 1 : 0;
+        }
+    }
+    // js1.2+ -> validation with regular expressions 
+    else {
+        var isEmpty          = (sqlQuery1.value.replace(/\s/g, '') == '') ? 1 : 0;
+        if (isEmpty && typeof(theForm.elements['sql_file']) != 'undefined') {
+            isEmpty          = (theForm.elements['sql_file'].value.replace(/\s/g, '') == '') ? 1 : 0;
+        }
+        if (isEmpty && typeof(theForm.elements['id_bookmark']) != 'undefined') {
+            isEmpty          = (theForm.elements['id_bookmark'].value == '') ? 1 : 0;
+        }
+        if (isEmpty) {
+            theForm.reset();
+        }
+    }
+
+    if (isEmpty) {
+        sqlQuery1.select();
+        alert(errorMsg0);
+        sqlQuery1.focus();
+        return false;
+    }
+
+    return true;
+} // end of the 'emptySqlQuery()' function
+
+
+/**
+ * Displays an error message if an element of a form hasn't been completed and
+ * should be
+ *
+ * @param   object   the form
+ * @param   string   the name of the form field to put the focus on
+ *
+ * @return  boolean  whether the form field is empty or not
+ */
+function emptyFormElements(theForm, theFieldName)
+{
+    var theField = theForm.elements[theFieldName];
+    // Whether the replace function (js1.2) is supported or not
+    var isRegExp = (typeof(theField.value.replace) != 'undefined');
+
+    if (!isRegExp) {
+        var isEmpty = (theField.value == '') ? 1 : 0;
+    } else {
+        var isEmpty = (theField.value.replace(/\s/g, '') == '') ? 1 : 0;
+    }
+    if (isEmpty) {
+        theForm.reset();
+        theField.select();
+        alert(errorMsg0);
+        theField.focus();
+        return false;
+    }
+
+    return true;
+} // end of the 'emptyFormElements()' function
+
+
 /**
 * Ensures a value submitted in a form is numeric and is in a range
 *
 * @param   object   the form
 * @param   string   the name of the form field to check
- * @param   integer  the minimum authorized value + 1
- * @param   integer  the maximum authorized value + 1
+ * @param   integer  the minimum authorized value
+ * @param   integer  the maximum authorized value
 *
 * @return  boolean  whether a valid number has been submitted or not
 */