feat(GroundOverlay): add GroundOverlay component

* Ref #624

src/constants.js

@@ -26,6 +26,8 @@ export const INFO_WINDOW = `__SECRET_INFO_WINDOW_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
 
 export const OVERLAY_VIEW = `__SECRET_OVERLAY_VIEW_DO_NOT_USE_OR_YOU_WILL_BE_FIRED`
 
+export const GROUND_LAYER = `__SECRET_GROUND_LAYER_DO_NOT_USE_OR_YOU_WILL_BE_FIRED`
+
 export const DRAWING_MANAGER = `__SECRET_DRAWING_MANAGER_DO_NOT_USE_OR_YOU_WILL_BE_FIRED`
 
 export const SEARCH_BOX = `__SECRET_SEARCH_BOX_DO_NOT_USE_OR_YOU_WILL_BE_FIRED`

src/index.js

@@ -18,6 +18,8 @@ export { default as InfoWindow } from "./components/InfoWindow"
 
 export { default as OverlayView } from "./components/OverlayView"
 
+export { default as GroundOverlay } from "./components/GroundOverlay"
+
 export { default as DirectionsRenderer } from "./components/DirectionsRenderer"
 
 export { default as FusionTablesLayer } from "./components/FusionTablesLayer"

src/macros/GroundOverlay.jsx

@@ -0,0 +1,86 @@
+/* global google */
+import React from "react"
+import PropTypes from "prop-types"
+
+import {
+  construct,
+  componentDidMount,
+  componentDidUpdate,
+  componentWillUnmount,
+} from "../utils/MapChildHelper"
+
+import { MAP, GROUND_LAYER } from "../constants"
+
+export const __jscodeshiftPlaceholder__ = `{
+  "eventMapOverrides": {
+    "onDblClick": "dblclick"
+  },
+  "getInstanceFromComponent": "this.state[GROUND_LAYER]"
+}`
+
+/**
+ * @url https://developers.google.com/maps/documentation/javascript/reference#GroundOverlay
+ */
+export class GroundOverlay extends React.PureComponent {
+  static propTypes = {
+    __jscodeshiftPlaceholder__: null,
+    /**
+     * @type string
+     */
+    url: PropTypes.string.isRequired,
+
+    /**
+     * @see https://developers.google.com/maps/documentation/javascript/reference#GroundOverlay
+     */
+    bounds: PropTypes.object.isRequired,
+  }
+
+  static contextTypes = {
+    [MAP]: PropTypes.object,
+  }
+
+  /*
+   * @url https://developers.google.com/maps/documentation/javascript/3.exp/reference#GroundOverlay
+   */
+  constructor(props, context) {
+    super(props, context)
+    const groundOverlay = new google.maps.GroundOverlay(props.url, props.bounds)
+    construct(GroundOverlay.propTypes, updaterMap, this.props, groundOverlay)
+    groundOverlay.setMap(this.context[MAP])
+    this.state = {
+      [GROUND_LAYER]: groundOverlay,
+    }
+  }
+
+  componentDidMount() {
+    componentDidMount(this, this.state[GROUND_LAYER], eventMap)
+  }
+
+  componentDidUpdate(prevProps) {
+    componentDidUpdate(
+      this,
+      this.state[GROUND_LAYER],
+      eventMap,
+      updaterMap,
+      prevProps
+    )
+  }
+
+  componentWillUnmount() {
+    componentWillUnmount(this)
+    const GroundOverlay = this.state[GROUND_LAYER]
+    if (GroundOverlay) {
+      GroundOverlay.setMap(null)
+    }
+  }
+
+  render() {
+    return false
+  }
+}
+
+export default GroundOverlay
+
+const eventMap = {}
+
+const updaterMap = {}