[Maps] symbolize points with maki icons

packages/kbn-maki/package.json

@@ -0,0 +1,10 @@
+{
+  "name": "@kbn/maki",
+  "version": "6.1.0",
+  "description": "browser friendly version of @mapbox/maki",
+  "license": "Apache-2.0",
+  "main": "index.js",
+  "devDependencies": {},
+  "dependencies": {},
+  "peerDependencies": {}
+}

packages/kbn-maki/readme.md

@@ -0,0 +1,6 @@
+# @kbn/maki
+
+[@mapbox/maki](https://www.npmjs.com/package/@mapbox/maki) only works in node.js.
+See https://github.com/mapbox/maki/issues/462 for details.
+
+@kbn/maki is a browser friendly version of @mapbox/maki

x-pack/package.json

@@ -180,6 +180,7 @@
     "@kbn/es-query": "1.0.0",
     "@kbn/i18n": "1.0.0",
     "@kbn/interpreter": "1.0.0",
+    "@kbn/maki": "6.1.0",
     "@kbn/ui-framework": "1.0.0",
     "@mapbox/mapbox-gl-draw": "^1.1.1",
     "@samverschueren/stream-to-observable": "^0.3.0",

x-pack/plugins/maps/common/constants.js

@@ -8,6 +8,8 @@ export const GIS_API_PATH = 'api/maps';
 export const EMS_DATA_FILE_PATH = 'ems/file';
 export const EMS_DATA_TMS_PATH = 'ems/tms';
 export const EMS_META_PATH = 'ems/meta';
+export const SPRITE_PATH = '/maps/sprite';
+export const MAKI_SPRITE_PATH = `${SPRITE_PATH}/maki`;
 
 export const MAP_SAVED_OBJECT_TYPE = 'map';
 export const APP_ID = 'maps';

x-pack/plugins/maps/common/parse_xml_string.js

@@ -0,0 +1,22 @@
+/*
+ * 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 { parseString } from 'xml2js';
+
+// promise based wrapper around parseString
+export async function parseXmlString(xmlString) {
+  const parsePromise = new Promise((resolve, reject) => {
+    parseString(xmlString, (error, result) => {
+      if (error) {
+        reject(error);
+      } else {
+        resolve(result);
+      }
+    });
+  });
+
+  return await parsePromise;
+}

x-pack/plugins/maps/common/parse_xml_string.test.js

@@ -0,0 +1,16 @@
+/*
+ * 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 { parseXmlString } from './parse_xml_string';
+
+describe('parseXmlString', () => {
+  it('Should parse xml string into JS object', async () => {
+    const xmlAsObject = await parseXmlString('<foo>bar</foo>');
+    expect(xmlAsObject).toEqual({
+      foo: 'bar'
+    });
+  });
+});

x-pack/plugins/maps/public/components/map/mb/utils.js

@@ -6,8 +6,17 @@
 
 import _ from 'lodash';
 import mapboxgl from 'mapbox-gl';
+import chrome from 'ui/chrome';
+import { MAKI_SPRITE_PATH } from '../../../../common/constants';
+
+function relativeToAbsolute(url) {
+  const a = document.createElement('a');
+  a.setAttribute('href', url);
+  return a.href;
+}
 
 export async function createMbMapInstance({ node, initialView, scrollZoom }) {
+  const makiUrl = relativeToAbsolute(chrome.addBasePath(MAKI_SPRITE_PATH));
   return new Promise((resolve) => {
     const options = {
       attributionControl: false,
@@ -16,6 +25,7 @@ export async function createMbMapInstance({ node, initialView, scrollZoom }) {
         version: 8,
         sources: {},
         layers: [],
+        sprite: makiUrl
       },
       scrollZoom
     };

x-pack/plugins/maps/public/shared/layers/sources/wms_source/wms_client.js

@@ -5,7 +5,7 @@
  */
 
 import _ from 'lodash';
-import { parseString } from 'xml2js';
+import { parseXmlString } from '../../../../../common/parse_xml_string';
 import fetch from 'node-fetch';
 import { parse, format } from 'url';
 
@@ -76,16 +76,7 @@ export class WmsClient {
     }
     const body = await resp.text();
 
-    const parsePromise = new Promise((resolve, reject) => {
-      parseString(body, (error, result) => {
-        if (error) {
-          reject(error);
-        } else {
-          resolve(result);
-        }
-      });
-    });
-    return await parsePromise;
+    return await parseXmlString(body);
   }
 
   async getCapabilities() {

x-pack/plugins/maps/public/shared/layers/styles/components/vector/legend/point_icon.js → x-pack/plugins/maps/public/shared/layers/styles/components/vector/legend/circle_icon.js

@@ -6,7 +6,7 @@
 
 import React from 'react';
 
-export const PointIcon = ({ style }) => (
+export const CircleIcon = ({ style }) => (
   <svg
     className="euiIcon euiIcon--medium mapFillableCircle"
     xmlns="http://www.w3.org/2000/svg"

x-pack/plugins/maps/public/shared/layers/styles/components/vector/legend/style_property_legend_row.js

@@ -11,7 +11,7 @@ import PropTypes from 'prop-types';
 import { styleOptionShapes, rangeShape } from '../style_option_shapes';
 import { VectorStyle } from '../../../vector_style';
 import { ColorGradient } from '../../color_gradient';
-import { PointIcon } from './point_icon';
+import { CircleIcon } from './circle_icon';
 import { getVectorStyleLabel } from '../get_vector_style_label';
 import { EuiFlexGroup, EuiFlexItem, EuiHorizontalRule } from '@elastic/eui';
 import { StyleLegendRow } from '../../style_legend_row';
@@ -23,9 +23,9 @@ function getLineWidthIcons() {
     width: '12px',
   };
   return [
-    <PointIcon style={{ ...defaultStyle, strokeWidth: '1px' }}/>,
-    <PointIcon style={{ ...defaultStyle, strokeWidth: '2px' }}/>,
-    <PointIcon style={{ ...defaultStyle, strokeWidth: '3px' }}/>,
+    <CircleIcon style={{ ...defaultStyle, strokeWidth: '1px' }}/>,
+    <CircleIcon style={{ ...defaultStyle, strokeWidth: '2px' }}/>,
+    <CircleIcon style={{ ...defaultStyle, strokeWidth: '3px' }}/>,
   ];
 }
 
@@ -36,9 +36,9 @@ function getSymbolSizeIcons() {
     fill: 'grey',
   };
   return [
-    <PointIcon style={{ ...defaultStyle, width: '4px' }}/>,
-    <PointIcon style={{ ...defaultStyle, width: '8px' }}/>,
-    <PointIcon style={{ ...defaultStyle, width: '12px' }}/>,
+    <CircleIcon style={{ ...defaultStyle, width: '4px' }}/>,
+    <CircleIcon style={{ ...defaultStyle, width: '8px' }}/>,
+    <CircleIcon style={{ ...defaultStyle, width: '12px' }}/>,
   ];
 }
 

x-pack/plugins/maps/public/shared/layers/styles/components/vector/legend/symbol_icon.js

@@ -0,0 +1,71 @@
+/*
+ * 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, { Component } from 'react';
+import PropTypes from 'prop-types';
+
+import { getMakiSymbolSvg, styleSvg, buildSrcUrl } from '../../../symbol_utils';
+
+export class SymbolIcon extends Component {
+
+  state = {
+    imgDataUrl: undefined,
+    prevSymbolId: undefined,
+    prevFill: undefined,
+  }
+
+  componentDidMount() {
+    this._isMounted = true;
+    this._loadSymbol(this.props.symbolId, this.props.fill);
+  }
+
+  componentDidUpdate() {
+    this._loadSymbol(this.props.symbolId, this.props.fill);
+  }
+
+  componentWillUnmount() {
+    this._isMounted = false;
+  }
+
+  async _loadSymbol(nextSymbolId, nextFill) {
+    if (nextSymbolId === this.state.prevSymbolId
+      && nextFill === this.state.prevFill) {
+      return;
+    }
+
+    let imgDataUrl;
+    try {
+      const svg = getMakiSymbolSvg(nextSymbolId);
+      const styledSvg = await styleSvg(svg, nextFill);
+      imgDataUrl = buildSrcUrl(styledSvg);
+    } catch (error) {
+      // ignore failures - component will just not display an icon
+    }
+
+    if (this._isMounted) {
+      this.setState({
+        imgDataUrl,
+        prevSymbolId: nextSymbolId,
+        prevFill: nextFill
+      });
+    }
+  }
+
+  render() {
+    if (!this.state.imgDataUrl) {
+      return null;
+    }
+
+    return (
+      <img width="16px" src={this.state.imgDataUrl} alt={this.props.symbolId} />
+    );
+  }
+}
+
+SymbolIcon.propTypes = {
+  symbolId: PropTypes.string.isRequired,
+  fill: PropTypes.string.isRequired,
+};