1.0.3 • Public • Published


A fully composable element that displays a paper-material backed infowindow-like card on a <google-map> element or a google map instantiated by the Google Maps Javascript API, at the position of a map marker.

Versions and Installation

Polymer 3.0

To use this element in a Polymer 3.0 project, use npm or yarn to install.

// For Polymer 3 use npm or yarn
npm i --save plastic-map-info
// or 
yarn add plastic-map-info

Polymer 2.x

To use this element in a Polymer 2.x project, use bower to install.

// for Polymer 2 use bower 
bower install --save plastic-map-info^0.0.8

Polymer 1.x

A prior version of this element for Polymer 1.x, paper-map-info, is still available. You may install that version with:

bower install --save paper-map-info

Note that the 1.0 version was "paper" and the 2.0/3.0 version is "plastic".

Live Demos

At the Github Project Page you will find multiple live demos and the source code behind them.


In its current implementation (as of June 2018) the native infowindow does not support event handlers, so interactive infowindows are out. For example, something as simple as this:

    <google-map-marker ...>
      <paper-button on-tap="makeReservation">Reserve</paper-button>

This will not work because all bindings are lost when the infowindow is built. There is an issue open (#288), it has been open for more than 2 years, but as of now it is not resolved.

Additionally, the native infowindow does not support the use of CSS style classes under native shadow dom (classes work under shady dom).

These issues have to do with the way native infoWindow works and the way google-map-marker has to copy the infoWindow content, effectively moving the marker content from light DOM of the google-map-marker to shadow DOM of the google-map. This can't really be fixed in google-map-marker while continuing to use the native infoWindow and it seems very unlikely the native infoWindow would be modified to support the Polymer element scenario. Therefore, I believe the issue will persist indefinately.

If you don't need event handlers, and will style your elements in the infowindow only with style="..." on each tag, use the native infowindow. If you do need interaction, events, animation or CSS style classes, this element is fully composable.

Normal Infowindow Functionality Supported

Normal Google Map infowindow behavior is supported, including moving the window as the user pans the map, changes zoom, or drags the marker. The behavior where the map pans automatically to allow the infowindow to be displayed when the clicked marker was too close to an edge is also supported. In addition, since dynamic content is allowed, if the size of the content changes, the position of the window will adjust accordingly.

Sample Usage

Example Using the google-map Element

    <google-map latitude="40.7555" longitude="-73.985" on-google-map-ready="mapReady" fit-to-markers>
      <template is="dom-repeat" items="[[salons]]" as="s">
        <google-map-marker click-events latitude="[[]]" longitude="[[s.lng]]" on-google-map-marker-click="markerClick">
      <plastic-map-info id="myinfocard" fade-in>
        <div class="layout vertical">
          <div style="width:100%; background-color: blue; font-weight: bold; color: white; padding: 5px;">[[]]</div>
          <div class="layout vertical" style="border: 2px solid blue; padding: 5px;">
            <paper-button raised on-tap="booking">Book an Appointment</paper-button>
    markerClick(e) {
      this.selectedSalon = e.model.get('s');

Example Using Google Map Javascript API

This sample does not use the google-map element. It just instantiates a Google Map via the Javascript API.

  <iron-jsonp-library library-url="[[_gmapApiUrl]]" notify-event="map-api-load" library-loaded="{{_ijplLoaded}}" on-map-api-load="_mapsApiLoaded"></iron-jsonp-library>
  <plastic-aspect-ratio style="width:100%; max-width:640px; min-width:300px;" aspect-height="3" aspect-width="4">
    <div id="mapcontainerdiv">
    <plastic-map-info id="infowin" fade-in map="[[_theMap]]" elevation="4">
      <span class="evtTitle"><a href="[[]]" target="_blank">[[_selectedLocation.title]]</a></span>
      <span class="evtDates">[[_selectedLocation.dates]]</span>
      <span class="evtCircuit"><b>Parking Loc: </b>[[_selectedLocation.parkingLocation]]</span>
      <span class="evtCircuit"><a href="[[_selectedLocation.circuitLink]]" target="_blank">[[_selectedLocation.circuitName]]</a></span>
_mapsApiLoaded(e) {
  this._theMap = new google.maps.Map(this.$.mapcontainerdiv, {
    zoom: 4,
    center: {
      lat: 43.923,
      lng: -121.3465
addMarker(loc) {
  let m = new google.maps.Marker({
    position: loc.latLng,
    title: loc.title,
    map: this._theMap
  this._locationMarkers.push(m); // keep marker refs so they can be removed later
  this._addMarkerListener(m, loc);
 * add a click event listener, capturing the marker and location
_addMarkerListener(marker, location) {
  google.maps.event.addListener(marker, 'click', (e) => {
    this._markerClick(marker, location, e);
 * Handle marker click
 * @param {marker} marker - google maps marker
 * @param {object} location - location object
 * @param {object} e - click event data
_markerClick(marker, location, e) {
  this._selectedLocation = location;

Other Google Map elements

This element should also work with other elements that implement the Google Map Javascript API. If you have difficulty, please file an issue and I'll assist.


The element is meant to be fully composable so you can have anything inside, even iron-pages, streaming data charts, etc., if you want.


You can style the content of the infoWindow with CSS classes or style="...".

The paper-material background can be customized by using the --plastic-map-info-mixin.

The style of the beak (pointer from the card to the pin) can be modified with the --plastic-map-info-beak-mixin.

The inner container which holds your infoWindow content can be modified with the --plastic-map-info-content mixin.

You can replace the default beak entirely by providing your own image or svg in a div marked slot="info-beak" inside the content of the paper-map-info:

    <div slot="info-beak">
      ... your image or svg here ...

The Demo Page includes examples of each of these styling options.

Issues and Contributions

Please file issues on the github page. I make every effort to respond to issues within 24 hours.

Contributions via pull request are certainly welcome and appreciated.



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  • mlisook