[Maps] choropleth layer wizard

x-pack/plugins/maps/public/classes/layers/choropleth_layer_wizard/choropleth_layer_wizard.tsx

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+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+import React from 'react';
+import { i18n } from '@kbn/i18n';
+import { LAYER_WIZARD_CATEGORY } from '../../../../common/constants';
+import { LayerWizard, RenderWizardArguments } from '../layer_wizard_registry';
+import { LayerTemplate } from './layer_template';
+
+export const choroplethLayerWizardConfig: LayerWizard = {
+  categories: [LAYER_WIZARD_CATEGORY.ELASTICSEARCH],
+  description: i18n.translate('xpack.maps.choropleth.desc', {
+    defaultMessage: 'Shaded areas to compare statistics across boundaries',
+  }),
+  icon: 'logoElasticsearch',
+  renderWizard: (renderWizardArguments: RenderWizardArguments) => {
+    return <LayerTemplate {...renderWizardArguments} />;
+  },
+  title: i18n.translate('xpack.maps.choropleth.title', {
+    defaultMessage: 'Choropleth',
+  }),
+};

x-pack/plugins/maps/public/classes/layers/choropleth_layer_wizard/create_choropleth_layer_descriptor.ts

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+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+import uuid from 'uuid/v4';
+import {
+  AGG_TYPE,
+  COLOR_MAP_TYPE,
+  FIELD_ORIGIN,
+  SCALING_TYPES,
+  SOURCE_TYPES,
+  STYLE_TYPE,
+  VECTOR_STYLES,
+} from '../../../../common/constants';
+import { getJoinAggKey } from '../../../../common/get_agg_key';
+import {
+  AggDescriptor,
+  ColorDynamicOptions,
+  EMSFileSourceDescriptor,
+  ESSearchSourceDescriptor,
+} from '../../../../common/descriptor_types';
+import { VectorStyle } from '../../styles/vector/vector_style';
+import { VectorLayer } from '../vector_layer/vector_layer';
+import { EMSFileSource } from '../../sources/ems_file_source';
+// @ts-ignore
+import { ESSearchSource } from '../../sources/es_search_source';
+import { getDefaultDynamicProperties } from '../../styles/vector/vector_style_defaults';
+
+const defaultDynamicProperties = getDefaultDynamicProperties();
+
+function createChoroplethLayerDescriptor({
+  sourceDescriptor,
+  leftField,
+  rightIndexPatternId,
+  rightIndexPatternTitle,
+  rightTermField,
+}: {
+  sourceDescriptor: EMSFileSourceDescriptor | ESSearchSourceDescriptor;
+  leftField: string;
+  rightIndexPatternId: string;
+  rightIndexPatternTitle: string;
+  rightTermField: string;
+}) {
+  const metricsDescriptor: AggDescriptor = { type: AGG_TYPE.COUNT };
+  const joinId = uuid();
+  const joinKey = getJoinAggKey({
+    aggType: metricsDescriptor.type,
+    aggFieldName: metricsDescriptor.field ? metricsDescriptor.field : '',
+    rightSourceId: joinId,
+  });
+  return VectorLayer.createDescriptor({
+    joins: [
+      {
+        leftField,
+        right: {
+          type: SOURCE_TYPES.ES_TERM_SOURCE,
+          id: joinId,
+          indexPatternId: rightIndexPatternId,
+          indexPatternTitle: rightIndexPatternTitle,
+          term: rightTermField,
+          metrics: [metricsDescriptor],
+        },
+      },
+    ],
+    sourceDescriptor,
+    style: VectorStyle.createDescriptor({
+      [VECTOR_STYLES.FILL_COLOR]: {
+        type: STYLE_TYPE.DYNAMIC,
+        options: {
+          ...(defaultDynamicProperties[VECTOR_STYLES.FILL_COLOR]!.options as ColorDynamicOptions),
+          field: {
+            name: joinKey,
+            origin: FIELD_ORIGIN.JOIN,
+          },
+          color: 'Yellow to Red',
+          type: COLOR_MAP_TYPE.ORDINAL,
+        },
+      },
+      [VECTOR_STYLES.LINE_COLOR]: {
+        type: STYLE_TYPE.STATIC,
+        options: {
+          color: '#3d3d3d',
+        },
+      },
+    }),
+  });
+}
+
+export function createEmsChoroplethLayerDescriptor({
+  leftEmsFileId,
+  leftEmsField,
+  rightIndexPatternId,
+  rightIndexPatternTitle,
+  rightTermField,
+}: {
+  leftEmsFileId: string;
+  leftEmsField: string;
+  rightIndexPatternId: string;
+  rightIndexPatternTitle: string;
+  rightTermField: string;
+}) {
+  return createChoroplethLayerDescriptor({
+    sourceDescriptor: EMSFileSource.createDescriptor({
+      id: leftEmsFileId,
+      tooltipProperties: [leftEmsField],
+    }),
+    leftField: leftEmsField,
+    rightIndexPatternId,
+    rightIndexPatternTitle,
+    rightTermField,
+  });
+}
+
+export function createEsChoroplethLayerDescriptor({
+  leftIndexPatternId,
+  leftGeoField,
+  leftJoinField,
+  rightIndexPatternId,
+  rightIndexPatternTitle,
+  rightTermField,
+}: {
+  leftIndexPatternId: string;
+  leftGeoField: string;
+  leftJoinField: string;
+  rightIndexPatternId: string;
+  rightIndexPatternTitle: string;
+  rightTermField: string;
+}) {
+  return createChoroplethLayerDescriptor({
+    sourceDescriptor: ESSearchSource.createDescriptor({
+      indexPatternId: leftIndexPatternId,
+      geoField: leftGeoField,
+      scalingType: SCALING_TYPES.LIMIT,
+      tooltipProperties: [leftJoinField],
+    }),
+    leftField: leftJoinField,
+    rightIndexPatternId,
+    rightIndexPatternTitle,
+    rightTermField,
+  });
+}

x-pack/plugins/maps/public/classes/layers/choropleth_layer_wizard/index.ts

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+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+export { choroplethLayerWizardConfig } from './choropleth_layer_wizard';