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112 lines
4.5 KiB
JavaScript
112 lines
4.5 KiB
JavaScript
/*****************************************************************************
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* Open MCT Web, Copyright (c) 2014-2015, United States Government
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* as represented by the Administrator of the National Aeronautics and Space
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* Administration. All rights reserved.
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*
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* Open MCT Web is licensed under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0.
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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* Open MCT Web includes source code licensed under additional open source
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* licenses. See the Open Source Licenses file (LICENSES.md) included with
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* this source code distribution or the Licensing information page available
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* at runtime from the About dialog for additional information.
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*****************************************************************************/
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/*global define*/
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define(
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[],
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function () {
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"use strict";
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/**
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* Handles configuration of RequireJS to expose libraries
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* from bundles with module names that can be used from other
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* bundles.
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* @constructor
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* @param requirejs an instance of RequireJS
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*/
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function RequireConfigurator(requirejs) {
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// Utility function to clone part of a bundle definition
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function clone(obj) {
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return JSON.parse(JSON.stringify(obj));
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}
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// Look up module configuration from the bundle definition.
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// This will adjust paths to libraries as-needed.
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function getConfiguration(bundle) {
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var configuration = bundle.getConfiguration();
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// Adjust paths to point to libraries
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if (configuration.paths) {
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// Don't modify the actual bundle definition...
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configuration = clone(configuration);
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// ...replace values in a clone instead.
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Object.keys(configuration.paths).forEach(function (path) {
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configuration.paths[path] =
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bundle.getLibraryPath(configuration.paths[path]);
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});
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}
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return configuration;
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}
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// Build up paths and shim values from multiple bundles;
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// this is sensitive to the value from baseConfiguration
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// passed via reduce in buildConfiguration below, insofar
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// as it assumes paths and shim will have initial empty values.
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function mergeConfigurations(base, next) {
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["paths", "shim"].forEach(function (k) {
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Object.keys(next[k] || {}).forEach(function (p) {
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base[k][p] = next[k][p];
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});
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});
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return base;
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}
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// Build a configuration object, to pass to requirejs.config,
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// based on the defined configurations for all bundles.
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// The paths and shim properties from all bundles will be
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// merged to allow one requirejs.config call.
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function buildConfiguration(bundles) {
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// Provide an initial requirejs configuration...
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var baseConfiguration = {
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baseUrl: "",
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paths: {},
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shim: {}
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},
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// ...and pull out all bundle-specific parts
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bundleConfigurations = bundles.map(getConfiguration);
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// Reduce this into one configuration object.
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return bundleConfigurations.reduce(
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mergeConfigurations,
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baseConfiguration
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);
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}
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return {
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/**
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* Configure RequireJS to utilize any path/shim definitions
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* provided by these bundles.
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*
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* @param {Bundle[]} the bundles to include in this
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* configuration
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*/
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configure: function (bundles) {
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return requirejs.config(buildConfiguration(bundles));
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}
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};
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}
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return RequireConfigurator;
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}
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); |