X-Git-Url: http://wagnertech.de/gitweb/gitweb.cgi/mfinanz.git/blobdiff_plain/8c93869920ec0bf012a0f59175b39449c90a4d1f..36d1d6a42c18b4c7743c24ff3ebf02e81c470f7b:/js/kivi.js

diff --git a/js/kivi.js b/js/kivi.js
index 5ff3ce6ef..c6b707473 100644
--- a/js/kivi.js
+++ b/js/kivi.js
@@ -61,8 +61,16 @@ namespace("kivi", function(ns) {
 
     amount = amount.replace(/[\',]/g, "")
 
+    // Make sure no code wich is not a math expression ends up in eval().
+    if (!amount.match(/^[0-9 ()\-+*/.]*$/))
+      return 0;
+
     /* jshint -W061 */
-    return eval(amount);
+    try {
+      return eval(amount);
+    } catch (err) {
+      return 0;
+    }
   };
 
   ns.round_amount = function(amount, places) {
@@ -313,23 +321,6 @@ namespace("kivi", function(ns) {
     history.back();
   };
 
-  // Call arbitrary jQuery functions on arbitrary objects with
-  // arbitrary arguments. The use case is to allow eval_json_result
-  // using code to call simple jQuery stuff without having it to wrap
-  // them in their own small functions.
-  // Example usage with ActionBar:
-  //   call => [ 'kivi.call_jquery', '#form', 'resetForm' ],
-  ns.call_jquery = function(this_arg, function_name) {
-    var func = jQuery.fn[function_name];
-    if (!func)
-      return;
-
-    var args = Array.from(arguments);
-    args.splice(0, 2);
-
-    return func.apply($(this_arg), args);
-  };
-
   // Return a function object by its name (a string). Works both with
   // global functions (e.g. "check_right_date_format") and those in
   // namespaces (e.g. "kivi.t8").
@@ -476,6 +467,77 @@ namespace("kivi", function(ns) {
     if (!found)
       console.log('No duplicate IDs found :)');
   };
+
+  // Verifies that at least one checkbox matching the
+  // "checkbox_selector" is actually checked. If not, an error message
+  // is shown, and false is returned. Otherwise (at least one of them
+  // is checked) nothing is shown and true returned.
+  //
+  // Can be used in checks when clicking buttons.
+  ns.check_if_entries_selected = function(checkbox_selector) {
+    if ($(checkbox_selector + ':checked').length > 0)
+      return true;
+
+    alert(kivi.t8('No entries have been selected.'));
+
+    return false;
+  };
+
+  // Performs various validation steps on the descendants of
+  // 'selector'. Elements that should be validated must have an
+  // attribute named "data-validate" which is set to a space-separated
+  // list of tests to perform. Additionally, the attribute
+  // "data-title" must be set to a human-readable name of the field
+  // that can be shown as part of an error message.
+  //
+  // Supported validation tests are:
+  // - "required": the field must be set (its .val() must not be empty)
+  //
+  // The validation will abort and return "false" as soon as
+  // validation routine fails.
+  //
+  // The function returns "true" if all validations succeed for all
+  // elements.
+  ns.validate_form = function(selector) {
+    var validate_field = function(elt) {
+      var $elt  = $(elt);
+      var tests = $elt.data('validate').split(/ +/);
+      var info  = {
+        title: $elt.data('title'),
+        value: $elt.val(),
+      };
+
+      for (var test_idx in tests) {
+        var test = tests[test_idx];
+
+        if (test === "required") {
+          if ($elt.val() === '') {
+            alert(kivi.t8("The field '#{title}' must be set.", info));
+            return false;
+          }
+
+        } else {
+          var error = "kivi.validate_form: unknown test '" + test + "' for element ID '" + $elt.prop('id') + "'";
+          console.error(error);
+          alert(error);
+
+          return false;
+        }
+      }
+
+      return true;
+    };
+
+    selector = selector || '#form';
+    var ok   = true;
+    var to_check = $(selector + ' [data-validate]').toArray();
+
+    for (var to_check_idx in to_check)
+      if (!validate_field(to_check[to_check_idx]))
+        return false;
+
+    return true;
+  };
 });
 
 kivi = namespace('kivi');