openmct/platform/containment/src/CompositionMutabilityPolicy.js

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 * Open MCT Web, Copyright (c) 2014-2015, United States Government
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 * Administration. All rights reserved.
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 * Open MCT Web is licensed under the Apache License, Version 2.0 (the
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define(
    [],
    function () {

        /**
         * Disallow composition changes to objects which are not mutable.
         * @memberof platform/containment
         * @constructor
         * @implements {Policy.<Type, Type>}
         */
        function CompositionMutabilityPolicy() {
        }

        CompositionMutabilityPolicy.prototype.allow = function (candidate) {
            // Equate creatability with mutability; that is, users
            // can only modify objects of types they can create, and
            // vice versa.
            return candidate.hasFeature('creation');
        };

        return CompositionMutabilityPolicy;
    }
);