kepler.gl/src/schemas/map-style-schema.js

kepler.gl is a webgl based application to visualize large scale location data in the browser

// Copyright (c) 2018 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

import {VERSIONS} from './versions';
import Schema from './schema';

export const customMapStylePropsV1 = {
  accessToken: null,
  custom: null,
  icon: null,
  id: null,
  label: null,
  url: null
};

const CustomMapStyleSchema = new Schema({
  version: VERSIONS.v1,
  key: 'customStyle',
  properties: customMapStylePropsV1
});

class MapStyleSchemaV1 extends Schema {
  version = VERSIONS.v1;
  key = 'mapStyles';
  save(mapStyles, mapStyle) {

    // save all custom styles
    const saveCustomStyle = Object.keys(mapStyles).reduce((accu, key) => ({
      ...(mapStyles[key].custom ?
          {[key]: CustomMapStyleSchema.save(mapStyles[key]).customStyle} : {}
      )
    }), {});

    return {[this.key]: saveCustomStyle};
  }

  load(mapStyles) {
    // If mapStyle is an empty object, do not load it
    return typeof mapStyles === 'object' && Object.keys(mapStyles).length ? {[this.key]: mapStyles} : {};
  }
}

// version v0
export const propertiesV0 = {
  styleType: null,
  topLayerGroups: null,
  visibleLayerGroups: null,
  buildingLayer: null,
  mapStyles: new MapStyleSchemaV1()
};

const mapStyleSchema = {
  [VERSIONS.v0]: new Schema({
    version: VERSIONS.v0,
    properties: propertiesV0,
    key: 'mapStyle'
  }),
  [VERSIONS.v1]: new Schema({
    version: VERSIONS.v1,
    properties: propertiesV0,
    key: 'mapStyle'
  })
};

export default mapStyleSchema;