_validator.html

<link rel="import" href="../polymer/polymer.html">
<script>

// TODO: depricated

(function() {
  var navigationKeys = [9 /*tab*/, 37 /*left*/, 38 /*up*/, 39 /*right*/, 40 /*down*/];
  var metaKeys = [65 /*a*/, 82 /*r*/, 88 /*x*/, 67 /*c*/, 86 /*v*/, 90 /*z*/, 89 /*y*/];
  var numberKeys = [48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 189 /*-*/, 190 /*.*/];
  var editKeys = [8 /*backspace*/, 46 /*del*/];
  /* @polymerBehavior Polymer.IoInputValidator */
  Polymer.IoInputValidator = {
    isNavigationKey: function(event) {
      if (navigationKeys.indexOf(event.which) !== -1) {
        return true;
      }
    },
    isMetaKey: function(event) {
      if (event.metaKey && metaKeys.indexOf(event.which) !== -1) {
        return true;
      }
      return false;
    },
    isNumberKey: function(event, integer) {
      if (event.which === 190 && integer) return false;
      if (numberKeys.indexOf(event.which) !== -1) {
        return true;
      }
      return false;
    },
    isEditKey: function(event) {
      if (editKeys.indexOf(event.which) !== -1) {
        return true;
      }
      return false;
    },
    isEnterKey: function(event) {
      return event.which === 13;
    },
    isJsonString: function(str) {
      try {
        JSON.parse(str);
      } catch (e) {
        return false;
      }
      return true;
    },
    isNumberString: function(str) {
      if (typeof str !== 'string') return false;
      if (str === '') return false;
      if (str.slice(0, 1) === '0' && (str.length > 1 && str.slice(1, 2) !== '.')) {
        return false;
      }
      if (!isNaN(str)) {
        return true;
      } else {
        return false;
      }
    }
  };
}());
</script>