ffrgb / meshviewer

(function() {

    var iframe=document.getElementById("meshviewer-embedded")

    if (!iframe) {

        return;

    }

    if (!iframe.contentWindow) {

        console.log("Element 'meshviewer-embedded' seems not to be a valid iframe")

        return;

    }

    function updateIframeHash() { // see https://gist.github.com/manufitoussi/7529fa882ff0b737f257

        if(iframe.contentWindow.location.host !== "") {

            // iframe already loaded.

            iframe.contentWindow.location.hash = window.location.hash;

          } else {

            // iframe is just starting.

            var newHash = window.location.hash;

            var srcStr = iframe.getAttribute('src');

            var words = srcStr.split('#');

            var href = words[0];

            var newSrc = href + newHash;

            iframe.setAttribute('src', newSrc);

          }

    };

    updateIframeHash();

    iframe.contentWindow.addEventListener("message", (event) => {

        if (event && event.data && event.data.hash) {

            window.location.replace(event.data.hash);

        }

    }, false);

    window.onhashchange = updateIframeHash;

}) ();