heron/tools/ui/resources/static/js/colors.js

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

/**
 * Code for handling color-scheme changes
 */

(function () {
  function toggleColors () {
    localStorage.colors = localStorage.colors === 'colorblind' ? 'default' : 'colorblind';
    window.location.reload();
  }

  d3.selectAll('.color-choice button').on('click', toggleColors);
  d3.selectAll('.color-choice button').classed('active', function () {
    return d3.select(this).attr('data-color') === (localStorage.colors || 'default');
  });
}());