Source: formats/kml/features/KmlDocument.js

/*
 * Copyright 2003-2006, 2009, 2017, 2020 United States Government, as represented
 * by the Administrator of the National Aeronautics and Space Administration.
 * All rights reserved.
 *
 * The NASAWorldWind/WebWorldWind platform is licensed under the Apache License,
 * Version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License
 * at http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed
 * under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
 * CONDITIONS OF ANY KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations under the License.
 *
 * NASAWorldWind/WebWorldWind also contains the following 3rd party Open Source
 * software:
 *
 *    ES6-Promise – under MIT License
 *    libtess.js – SGI Free Software License B
 *    Proj4 – under MIT License
 *    JSZip – under MIT License
 *
 * A complete listing of 3rd Party software notices and licenses included in
 * WebWorldWind can be found in the WebWorldWind 3rd-party notices and licenses
 * PDF found in code  directory.
 */
define([
    './KmlContainer',
    '../KmlElements',
    './KmlFeature',
    '../util/KmlSchema'
], function (
    KmlContainer,
    KmlElements,
    KmlFeature,
    Schema
) {
    "use strict";
    /**
     * Constructs an KmlDocument. Applications usually don't call this constructor. It is called by {@link KmlFile} as
     * objects from Kml file are read. This object is already concrete implementation.
     * @alias KmlDocument
     * @classdesc Contains the data associated with Document options.
     * @param options {Object}
     * @param options.objectNode {Node} Node representing the document.
     * @constructor
     * @throws {ArgumentError} If the options is null or undefined.
     * @see https://developers.google.com/kml/documentation/kmlreference#document
     * @augments KmlContainer
     */
    var KmlDocument = function (options) {
        KmlContainer.call(this, options);
    };

    KmlDocument.prototype = Object.create(KmlContainer.prototype);

    Object.defineProperties(KmlDocument.prototype, {
        /**
         * Specifies a custom KML schema that is used to add custom data to KML Features. The "id" attribute is
         * required and must be unique within the KML file. <Schema> is always a child of <Document>.
         * This is array of all Schemas in current document
         * @memberof KmlDocument.prototype
         * @readonly
         * @type {Schema[]}
         * @see {Schema}
         */
        kmlSchemas: {
            get: function(){
                var allElements = this._factory.all(this);
                return allElements.filter(function (element) {
                    return element instanceof Schema;
                });
            }
        }
    });

    /**
     * @inheritDoc
     */
    KmlDocument.prototype.getTagNames = function () {
        return ['Document'];
    };

    KmlElements.addKey(KmlDocument.prototype.getTagNames()[0], KmlDocument);

    return KmlDocument;
});