escher-vis/js/src/static.js

Escher: A Web Application for Building, Sharing, and Embedding Data-Rich Visualizations of Biological Pathways

/** static */

var utils = require('./utils')
var d3_json = require('d3-request').json

module.exports = {
    load_map_model_from_url: load_map_model_from_url
}

function load_map_model_from_url(map_download_url, model_download_url,
                                 local_index, options, callback) {
    var opt = utils.parse_url_components(window, options),
        to_load = [],
        load_map = function (fn) { fn(null); },
        load_model = function (fn) { fn(null); }
    if (opt.map_name) {
        var map_path = _get_path('map', opt.map_name,
                                 local_index, map_download_url)
        if (map_path) {
            load_map = function (fn) {
                d3_json(map_path, function(error, data) {
                    if (error) console.warn(error)
                    fn(data)
                })
            }
        }
    }
    if (opt.model_name) {
        var model_path = _get_path('model', opt.model_name,
                                   local_index, model_download_url)
        if (model_path) {
            load_model = function (fn) {
                d3_json(model_path, function(error, data) {
                    if (error) console.warn(error)
                    fn(data)
                })
            }
        }
    }
    if (opt.hasOwnProperty('enable_editing')) {
        options.enable_editing = opt.enable_editing.toLowerCase() === 'true'
    }
    load_map(function(map_data) {
        load_model(function(model_data) {
            callback(map_data, model_data, options)
        })
    })
}

function _get_path(kind, name, index, url) {
    var match = index[kind+'s'].filter(function(x) {
        return x[kind+'_name'] == name
    })
    if (match.length == 0)
        throw new Error('Bad ' + kind + ' ' + name)
    return (url + encodeURIComponent(match[0].organism) +
            '/' + encodeURIComponent(match[0][kind+'_name'])) + '.json'
}