grafana/public/app/directives/spectrumPicker.js

define([
  'angular',
  'spectrum'
],
function (angular) {
  'use strict';

  angular
    .module('grafana.directives')
    .directive('spectrumPicker', function() {
      return {
        restrict: 'E',
        require: 'ngModel',
        scope: false,
        replace: true,
        template: "<span><input class='input-small' /></span>",
        link: function(scope, element, attrs, ngModel) {
          var input = element.find('input');
          var options = angular.extend({
            showAlpha: true,
            showButtons: false,
            color: ngModel.$viewValue,
            change: function(color) {
              scope.$apply(function() {
                ngModel.$setViewValue(color.toRgbString());
              });
            }
          }, scope.$eval(attrs.options));

          ngModel.$render = function() {
            input.spectrum('set', ngModel.$viewValue || '');
          };

          input.spectrum(options);

          scope.$on('$destroy', function() {
            input.spectrum('destroy');
          });
        }
      };
    });
});