text: /*****************************************************************************
   * Open MCT, Copyright (c) 2014-2017, United States Government
   * as represented by the Administrator of the National Aeronautics and Space
   * Administration. All rights reserved.
   *
   * Open MCT 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 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.
   *****************************************************************************/
  
  define(
      [],
      function () {
  
          /**
           * The PlotTickGenerator provides labels for ticks along the
           * domain and range axes of the plot, to support the plot
           * template.
           *
           * @memberof platform/features/plot
           * @constructor
           * @param {PlotPanZoomStack} panZoomStack the pan-zoom stack for
           *        this plot, used to determine plot boundaries
           * @param {TelemetryFormatter} formatter used to format (for display)
           *        domain and range values.
           */
          function PlotTickGenerator(panZoomStack, formatter) {
              this.panZoomStack = panZoomStack;
              this.formatter = formatter;
          }
  
          // For phantomjs compatibility, for headless testing
          // (Function.prototype.bind unsupported)
          function bind(fn, thisObj) {
              return fn.bind ? fn.bind(thisObj) : function () {
                  return fn.apply(thisObj, arguments);
              };
          }
  
          // Generate ticks; interpolate from start up to
          // start + span in count steps, using the provided
          // formatter to represent each value.
          PlotTickGenerator.prototype.generateTicks = function (start, span, count, format) {
              var step = span / (count - 1),
                  result = [],
                  i;
  
              for (i = 0; i < count; i += 1) {
                  result.push({
                      //If data to show, display label for each tick line, otherwise show lines but suppress labels.
                      label: span > 0 ? format(i * step + start) : ''
                  });
              }
  
              return result;
          };
  
          /**
           * Generate tick marks for the domain axis.
           * @param {number} count the number of ticks
           * @returns {string[]} labels for those ticks
           */
          PlotTickGenerator.prototype.generateDomainTicks = function (count) {
              var panZoom = this.panZoomStack.getPanZoom();
              return this.generateTicks(
                  panZoom.origin[0],
                  panZoom.dimensions[0],
                  count,
                  bind(this.formatter.formatDomainValue, this.formatter)
              );
          };
  
          /**
           * Generate tick marks for the range axis.
           * @param {number} count the number of ticks
           * @returns {string[]} labels for those ticks
           */
          PlotTickGenerator.prototype.generateRangeTicks = function (count) {
              var panZoom = this.panZoomStack.getPanZoom();
              return this.generateTicks(
                  panZoom.origin[1],
                  panZoom.dimensions[1],
                  count,
                  bind(this.formatter.formatRangeValue, this.formatter)
              );
          };
  
          return PlotTickGenerator;
      }
  );
  