highcharts/modules/drilldown.js

JavaScript charting framework

!/**
 * Highcharts JS v12.6.0 (2026-04-13)
 * @module highcharts/modules/drilldown
 * @requires highcharts
 *
 * Highcharts Drilldown module
 *
 * (c) 2009-2026 Highsoft AS
 *
 * Author: Torstein Hønsi
 * A commercial license may be required depending on use.
 * See www.highcharts.com/license
 *
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u,m;if((h=i[d]).levelNumber===o){if(i.pop(),!(u=h.lowerSeries).chart){for(p=r.length;p--;)if(r[p].options.id===h.lowerSeriesOptions.id&&r[p].options._levelNumber===o+1){u=r[p];break}}u.dataTable.setColumn("x",[]),u.xAxis&&u.xAxis.names&&(0===l||d===l-1)&&(u.xAxis.names.length=0),h.levelSeriesOptions.forEach(t=>{let e=s(t,u);e&&(m=e)}),g(e,"drillup",{seriesOptions:h.seriesPurgedOptions||h.seriesOptions}),m&&(m.type===u.type&&(m.drilldownLevel=h,m.options.animation=n.animation,u.chart&&u.animateDrillupFrom?.(h)),m.options._levelNumber=o);let f=u;if(e.mapView||f.remove(!1),m?.xAxis&&(c=h.oldExtremes,m.xAxis.setExtremes(c.xMin,c.xMax,!1),m.yAxis.setExtremes(c.yMin,c.yMax,!1)),h.resetZoomButton&&(e.resetZoomButton=h.resetZoomButton),e.mapView){let i=h.levelNumber===o&&t,r=n.animation&&n.mapZooming;i?u.remove(!1):(u.dataLabelsGroups?.forEach(t=>{t?.destroy()}),u.dataLabelsGroups=[],e.mapView&&m&&(r&&(u.isDrilling=!0,m.isDrilling=!0,e.redraw(!1),e.mapView.fitToBounds(u.bounds,void 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t=this.options.drilldown,e=t&&t.breadcrumbs;this.breadcrumbs||(this.breadcrumbs=new _(this,e)),this.breadcrumbs.updateProperties(tr(this))}function o(){this.breadcrumbs&&this.breadcrumbs.updateProperties(tr(this))}function r(){this.drilldown=new tl(this)}function l(){this.resetZoomButton&&(this.resetZoomButton=this.resetZoomButton.destroy())}function n(){this.resetZoomButton&&this.showResetZoom()}function s(){(this.xAxis||[]).forEach(t=>{let e={};t.ddPoints=e,t.series.forEach(t=>{let i=t.getColumn("x"),o=t.points,r=t.options.data||[];for(let l=0,n=i.length,s;l<n;l++)if("number"!=typeof(s=r[l])&&(s=t.pointClass.prototype.optionsToObject.call({series:t},s)).drilldown){e[i[l]]||(e[i[l]]=[]);let r=l-(t.cropStart||0);e[i[l]].push(!o||!(r>=0)||!(r<o.length)||o[r])}}),D(t.ticks,t=>t.drillable())})}function a(t){let e=this.breadcrumbs,i=t.options.drilldown&&t.options.drilldown.breadcrumbs;e&&i&&e.update(i)}function 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