tnt.board/src/data.js

TnT track-based board display

var apijs = require ("tnt.api");
var spinner = require ("./spinner.js")();

var tnt_data = {};

tnt_data.sync = function() {
    var update_track = function(obj) {
        var track = this;
        track.data().elements(update_track.retriever().call(track, obj.loc));
        obj.on_success();
    };

    apijs (update_track)
        .getset ('elements', [])
        .getset ('retriever', function () {});

    return update_track;
};

tnt_data.async = function () {
    var update_track = function (obj) {
        var track = this;
        spinner.on.call(track);
        update_track.retriever().call(track, obj.loc)
            .then (function (resp) {
                track.data().elements(resp);
                obj.on_success();
                spinner.off.call(track);
            });
    };

    var api = apijs (update_track)
        .getset ('elements', [])
        .getset ('retriever');

    return update_track;
};


// A predefined track displaying no external data
// it is used for location and axis tracks for example
tnt_data.empty = function () {
    var updater = tnt_data.sync();

    return updater;
};

module.exports = exports = tnt_data;