/*****************************************************************************
 * Open MCT Web, Copyright (c) 2014-2015, United States Government
 * as represented by the Administrator of the National Aeronautics and Space
 * Administration. All rights reserved.
 *
 * Open MCT Web 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.
 *
 * Open MCT Web includes source code licensed under additional open source
 * licenses. See the Open Source Licenses file (LICENSES.md) included with
 * this source code distribution or the Licensing information page available
 * at runtime from the About dialog for additional information.
 *****************************************************************************/
/*global define*/
define(
    [],
    function () {
        "use strict";

        /**
         * Provides a window on a telemetry data series, to support
         * insertion into a plot line.
         */
        function PlotSeriesWindow(series, domain, range, start, end) {
            return {
                getPointCount: function () {
                    return end - start;
                },
                getDomainValue: function (index) {
                    return series.getDomainValue(index + start, domain);
                },
                getRangeValue: function (index) {
                    return series.getRangeValue(index + start, range);
                },
                split: function () {
                    var mid = Math.floor((end + start) / 2);
                    return ((end - start) > 1) ?
                            [
                                new PlotSeriesWindow(
                                    series,
                                    domain,
                                    range,
                                    start,
                                    mid
                                ),
                                new PlotSeriesWindow(
                                    series,
                                    domain,
                                    range,
                                    mid,
                                    end
                                )
                            ] : [];
                }
            };
        }

        return PlotSeriesWindow;
    }
);