@netdata/charts/dist/es6/chartLibraries/dygraph/plotters/annotations.js

Netdata frontend SDK and chart utilities

function _toConsumableArray(r) { return _arrayWithoutHoles(r) || _iterableToArray(r) || _unsupportedIterableToArray(r) || _nonIterableSpread(); }
function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(r, a) { if (r) { if ("string" == typeof r) return _arrayLikeToArray(r, a); var t = {}.toString.call(r).slice(8, -1); return "Object" === t && r.constructor && (t = r.constructor.name), "Map" === t || "Set" === t ? Array.from(r) : "Arguments" === t || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(t) ? _arrayLikeToArray(r, a) : void 0; } }
function _iterableToArray(r) { if ("undefined" != typeof Symbol && null != r[Symbol.iterator] || null != r["@@iterator"]) return Array.from(r); }
function _arrayWithoutHoles(r) { if (Array.isArray(r)) return _arrayLikeToArray(r); }
function _arrayLikeToArray(r, a) { (null == a || a > r.length) && (a = r.length); for (var e = 0, n = Array(a); e < a; e++) n[e] = r[e]; return n; }
import { enums, parts, check, colors, priorities } from "../../../helpers/annotations";
import { getRowPointValue } from "../../../sdk/makeChart/getPointValue";
var annotationLineAlpha = 0.45;
export default (function (chartUI) {
  return function (plotter) {
    if (!chartUI) return;

    // We need to handle all the series simultaneously.

    if (plotter.setName === "ANNOTATIONS") {
      var ctx = plotter.drawingContext;
      var points = plotter.points;
      if (!points.length || !points[1]) return;
      var min_sep = points[1].canvasx - points[0].canvasx + 1;
      var bar_width = Math.floor(min_sep);
      var dimensionIds = chartUI.chart.getPayloadDimensionIds();
      var selectedLegendDimensions = chartUI.chart.getAttribute("selectedLegendDimensions");
      var selectedIdsSet = dimensionIds.reduce(function (h, id, index) {
        if (!selectedLegendDimensions.length) {
          h.add(index);
        } else {
          if (chartUI.chart.isDimensionVisible(id)) h.add(index);
        }
        return h;
      }, new Set());
      var _chartUI$chart$getPay = chartUI.chart.getPayload(),
        all = _chartUI$chart$getPay.all,
        point = _chartUI$chart$getPay.point;
      points.forEach(function (p) {
        var _ctx$globalAlpha;
        var center_x = p.canvasx;
        var row = chartUI.chart.getClosestRow(p.xval);
        var pointData = all[row];
        var valueSet = new Set();
        selectedIdsSet.forEach(function (index) {
          var annotation = getRowPointValue(pointData, index + 1, point, "pa");
          if (annotation) parts.forEach(function (a) {
            return check(annotation, enums[a]) && valueSet.add(a);
          });
        });
        var values = _toConsumableArray(valueSet).sort(function (a, b) {
          return priorities[a] < priorities[b];
        });
        var _plotter$dygraph$getA = plotter.dygraph.getArea(),
          h = _plotter$dygraph$getA.h;
        ctx.strokeStyle = ctx.fillStyle = "transparent";
        ctx.fillRect(center_x - bar_width / 2, h - 4, bar_width, h);
        ctx.strokeRect(center_x - bar_width / 2, h - 4, bar_width, h);
        var previousAlpha = (_ctx$globalAlpha = ctx.globalAlpha) !== null && _ctx$globalAlpha !== void 0 ? _ctx$globalAlpha : 1;
        ctx.globalAlpha = annotationLineAlpha;
        values.forEach(function (val) {
          ctx.strokeStyle = ctx.fillStyle = colors[val] || "transparent";
          ctx.fillRect(center_x - bar_width / 2, h - 4, bar_width, h);
          ctx.strokeRect(center_x - bar_width / 2, h - 4, bar_width, h);
        });
        ctx.globalAlpha = previousAlpha;
      });
    }
  };
});