terriajs/lib/ViewModels/updateApplicationOnMessageFromParentWindow.js

Geospatial data visualization platform.

'use strict';

/*global require*/
var defined = require('terriajs-cesium/Source/Core/defined');
var raiseErrorToUser = require('../Models/raiseErrorToUser');

var updateApplicationOnMessageFromParentWindow = function(terria, window) {
    var allowOrigin;

    window.addEventListener('message', function(event) {
        var origin = event.origin;
        if (!defined(origin) && defined(event.originalEvent)) {
            // For Chrome, the origin property is in the event.originalEvent object.
            origin = event.originalEvent.origin;
        }

        if ((!defined(allowOrigin) || origin !== allowOrigin) && // allowed origin in url hash parameter
            event.source !== window.parent && // iframe parent
            event.source !== window.opener) { // caller of window.open
            return;
        }

        // receive allowOrigin
        if ((event.source === window.opener || event.source === window.parent) && event.data.allowOrigin) {
            allowOrigin = event.data.allowOrigin;
            delete event.data.allowOrigin;
        }

        terria.updateFromStartData(event.data).otherwise(function(e) {
            raiseErrorToUser(terria, e);
        });
    }, false);

    if (window.parent !== window) {
        window.parent.postMessage('ready', '*');
    }

    if (window.opener) {
        window.opener.postMessage('ready', '*');
    }
};

module.exports = updateApplicationOnMessageFromParentWindow;