text: /**
   * DevExtreme (viz/vector_map/tooltip_viewer.js)
   * Version: 19.2.5
   * Build date: Mon Dec 16 2019
   *
   * Copyright (c) 2012 - 2019 Developer Express Inc. ALL RIGHTS RESERVED
   * Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
   */
  "use strict";
  var TOOLTIP_OFFSET = 12;
  
  function TooltipViewer(params) {
      this._subscribeToTracker(params.tracker, params.tooltip, params.layerCollection)
  }
  TooltipViewer.prototype = {
      constructor: TooltipViewer,
      dispose: function() {
          this._offTracker();
          this._offTracker = null
      },
      _subscribeToTracker: function(tracker, tooltip, layerCollection) {
          this._offTracker = tracker.on({
              "focus-on": function(arg) {
                  var layer, proxy, result = false;
                  if (tooltip.isEnabled()) {
                      layer = layerCollection.byName(arg.data.name);
                      proxy = layer && layer.getProxy(arg.data.index);
                      if (proxy && tooltip.show(proxy, {
                              x: 0,
                              y: 0,
                              offset: 0
                          }, {
                              target: proxy
                          })) {
                          tooltip.move(arg.x, arg.y, TOOLTIP_OFFSET);
                          result = true
                      }
                  }
                  arg.done(result)
              },
              "focus-move": function(arg) {
                  tooltip.move(arg.x, arg.y, TOOLTIP_OFFSET)
              },
              "focus-off": function() {
                  tooltip.hide()
              }
          })
      }
  };
  exports.TooltipViewer = TooltipViewer;
  