datatracker/ietf/static/js/room_params.js

var verbose = 0;

// Given a name like "foo-ab" or "foo-X-and-Y", change it to the "list-of-room-names" format, "foo-a/foo-b".
window.suffixmap = function (nm) {
    var andsuffix = /^(.*-)([^-]+)-and-(.*)$/;
    var andMatch = andsuffix.exec(nm);
    if (andMatch && andMatch[0] != '') {
        nm = andMatch[1] + andMatch[2] + "-" + andMatch[3];
    }
    // xyz-a/b/c => xyz-a/xyz-b/xyz-c
    var abcsuffix = /^(.*)-([a-h0-9]+)[-/]([a-h0-9]+)([-/][a-h0-9]+)?$/;
    var suffixMatch = abcsuffix.exec(nm);
    // if (verbose) console.log("nm=" + nm);
    if (suffixMatch && suffixMatch[0] != '') {
        // if (verbose) console.log("matched");
        nm = suffixMatch[1] + "-" + suffixMatch[2] + "/" +
            suffixMatch[1] + "-" + suffixMatch[3];
        // if (verbose) console.log("nm=>" + nm);
        if (suffixMatch[4] && suffixMatch[4] != '')
            nm += "/" + suffixMatch[1] + "-" + suffixMatch[4];
        // if (verbose) console.log("nm=>" + nm);
    }
    // xyz-abc => xyz-a/xyz-b/xyz-c
    abcsuffix = /^(.*)-([a-h])([a-h]+)([a-h])?$/;
    var suffixMatch = abcsuffix.exec(nm);
    if (suffixMatch && suffixMatch[0] != '') {
        nm = suffixMatch[1] + "-" + suffixMatch[2] + "/" +
            suffixMatch[1] + "-" + suffixMatch[3];
        if (suffixMatch[4] && suffixMatch[4] != '')
            nm += "/" + suffixMatch[1] + "-" + suffixMatch[4];
    }
    // if (verbose) console.log("suffixmap returning: " + nm);
    return nm;
};

// Find the coordinates of a room or list of room names separated by "/".
// Calls the function findroom() to get the coordinates for a specific room.
window.roomcoords = function (nm) {
    if (!nm) return null;

    if (nm.match("/")) {
        var nms = nm.split("/");
        var nm0 = findroom(nms[0]);
        if (!nm0) return null;
        for (var i = 1; i < nms.length; i++) {
            var nmi = roomcoords(nms[i]);
            if (!nmi) return null;
            if (nmi[0] < nm0[0]) nm0[0] = nmi[0];
            if (nmi[1] < nm0[1]) nm0[1] = nmi[1];
            if (nmi[2] > nm0[2]) nm0[2] = nmi[2];
            if (nmi[3] > nm0[3]) nm0[3] = nmi[3];
        }
        return [nm0[0], nm0[1], nm0[2], nm0[3], nm0[4], nm0[5]];
    } else {
        return findroom(nm);
    }
};

// Place an arrow at the center of a given room name (or list of room names separated by "/").
window.setarrow = function (nm) {
    for (var f = 0; f < floorlist.length; f++) {
        floor = floorlist[f];
        for (var i = 0; i < arrowsuffixlist.length; i++) {
            removearrow(arrowsuffixlist[i], floor);
        }
    }

    for (i = 0; i < arguments.length; i += 2) {
        nm = roommap(arguments[i]);
        // if (verbose) console.log("nm=" + nm);
        var rooms = nm.split(/[|]/);
        for (var j = 0; j < rooms.length; j++) {
            var room = rooms[j];
            var ret = roomcoords(room);
            // if (verbose) console.log("roomcoords returned: " + ret);
            if (!ret) continue;

            var left = ret[0],
                top = ret[1],
                right = ret[2],
                bottom = ret[3],
                floor = ret[4],
                width = ret[5],
                offsetleft = -25,
                offsettop = -25;
            // if (verbose) console.log("left=" + left + ", top=" + top + ", right=" + right + ", bottom=" + bottom + ", floor=" + floor + ", width=" + width);
            // calculate arrow position
            var arrow_left = (left + (right - left) / 2);
            var arrow_top = (top + (bottom - top) / 2);
            // scale the coordinates to match image scaling
            // if (verbose) console.log(floor + "-image");
            var img = document.getElementById(floor + "-image");
            var scale = img.width / width;
            arrow_left = arrow_left * scale;
            arrow_top = arrow_top * scale;
            var arrowdiv = floor + '-arrowdiv' + j;
            // if (verbose) console.log("arrowdiv: " + arrowdiv);
            var adiv = document.getElementById(arrowdiv);
            if (adiv) {
                adiv.style.left = arrow_left + offsetleft + "px";
                adiv.style.top = arrow_top + offsettop + "px";
                adiv.hidden = false;
                window.location.hash = floor;
                const url = new URL(location.href);
                url.searchParams.set('room', nm);
                history.pushState(null, '', url);
            }
        }
    }
};

window.removearrow = function (which, fl) {
    for (var i = 0; i < arguments.length; i++) {
        which = arguments[i];
        var arrowdiv = fl + '-arrowdiv' + (which ? which : "");
        var adiv = document.getElementById(arrowdiv);
        // if (verbose) console.log("looking for '" + arrowdiv + "'");
        if (adiv) {
            // if (verbose) console.log("adiv found");
            adiv.style.left = -500;
            adiv.style.top = -500;
            adiv.hidden = true;
        }
    }
};

window.setarrowlist = function (which, names) {
    for (var i = 1; i < arguments.length; i++) {
        setarrow(arguments[i], which);
    }
};

// Create a QueryString object
window.QueryString = function () {
    // get the query string, ignore the ? at the front.
    var querystring = location.search.substring(1);

    // parse out name/value pairs separated via &
    var args = querystring.split('&');

    // split out each name = value pair
    for (var i = 0; i < args.length; i++) {
        var pair = args[i].split('=');

        // Fix broken unescaping
        var temp = unescape(pair[0])
            .split('+');
        var name_ = temp.join(' ');

        var value_ = '';
        if (typeof pair[1] == 'string') {
            temp = unescape(pair[1])
                .split('+');
            value_ = temp.join(' ');
        }

        this[name_] = value_;
    }

    this.get = function (nm, def) {
        var value_ = this[nm];
        if (value_ == null) return def;
        else return value_;
    };
};

// Check the parameters for one named "room". If found, call setarrow(room).
window.checkParams = function () {
    var querystring = new QueryString();
    var room = querystring.get("room");
    if (room && room != "") setarrow(room);
};

// new functions
window.located = function (loc) {
    if (loc.civic && loc.civic.ROOM) {
        // map from "TerminalRoom" to "terminal-room" as necessary.
        setarrow(loc.civic.ROOM.replace(/([a-z])([A-Z])/g, '$1-$2')
            .toLowerCase(), "-green");
    }
};

// this needs to be called onload
window.automaticarrow = function () {
    //   if (navigator.geolocation) {
    //      navigator.geolocation.getCurrentPosition(located);
    //   }
};