306 lines
8.9 KiB
JavaScript
306 lines
8.9 KiB
JavaScript
/*!
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*
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* htmlwidgets bindings for ApexCharts
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* https://github.com/dreamRs/apexcharter
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*
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*/
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/// Functions
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// From Friss tuto (https://github.com/FrissAnalytics/shinyJsTutorials/blob/master/tutorials/tutorial_03.Rmd)
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function get_widget(id) {
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var htmlWidgetsObj = HTMLWidgets.find("#" + id);
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var widgetObj;
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if (typeof htmlWidgetsObj !== "undefined") {
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widgetObj = htmlWidgetsObj.getChart();
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}
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return widgetObj;
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}
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function is_single(options) {
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var typeLabels = ["pie", "radialBar", "donut"];
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var lab = typeLabels.indexOf(options.w.config.chart.type) > -1;
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var single = options.w.config.series.length === 1;
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return lab | single;
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}
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function is_datetime(chartContext) {
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if (
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chartContext.hasOwnProperty("w") &&
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chartContext.w.hasOwnProperty("config") &&
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chartContext.w.config.hasOwnProperty("xaxis") &&
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chartContext.w.config.xaxis.hasOwnProperty("type")
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) {
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return chartContext.w.config.xaxis.type == "datetime";
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} else {
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return false;
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}
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}
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function getSelection(chartContext, selectedDataPoints, serieIndex) {
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var typeLabels = ["pie", "radialBar", "donut"];
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var typeXY = ["scatter", "bubble"];
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var selected;
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if (typeLabels.indexOf(chartContext.opts.chart.type) > -1) {
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var labels = chartContext.opts.labels;
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selected = selectedDataPoints[serieIndex].map(function(index) {
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return labels[index];
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});
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} else {
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var data = chartContext.opts.series[serieIndex].data;
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selected = selectedDataPoints[serieIndex].map(function(index) {
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var val = data[index];
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if (typeXY.indexOf(chartContext.opts.chart.type) < 0) {
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if (val.hasOwnProperty("x")) {
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val = val.x;
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} else {
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val = val[0];
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}
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}
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return val;
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});
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}
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//console.log(selected);
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if (typeXY.indexOf(chartContext.opts.chart.type) > -1) {
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selected = {
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x: selected.map(function(obj) {
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return obj.x;
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}),
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y: selected.map(function(obj) {
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return obj.y;
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})
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};
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}
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if (typeof selected == "undefined") {
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selected = null;
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}
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return selected;
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}
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function getYaxis(axis) {
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var yzoom = { min: null, max: null };
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if (typeof axis.yaxis !== "undefined" && axis.yaxis !== null) {
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var y_axis;
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if (axis.yaxis.hasOwnProperty("min")) {
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y_axis = axis.yaxis;
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} else {
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y_axis = axis.yaxis[0];
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}
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if (y_axis.hasOwnProperty("min") && typeof y_axis.min !== "undefined") {
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yzoom.min = y_axis.min;
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}
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if (y_axis.hasOwnProperty("max") && typeof y_axis.max !== "undefined") {
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yzoom.max = y_axis.max;
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}
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}
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return yzoom;
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}
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function getXaxis(axis) {
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var xzoom = { min: null, max: null };
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if (typeof axis.xaxis !== "undefined") {
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var x_axis = axis.xaxis;
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if (x_axis.hasOwnProperty("min") && typeof x_axis.min !== "undefined") {
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xzoom.min = x_axis.min;
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}
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if (x_axis.hasOwnProperty("max") && typeof x_axis.max !== "undefined") {
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xzoom.max = x_axis.max;
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}
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}
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return xzoom;
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}
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/// Widget
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HTMLWidgets.widget({
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name: "apexcharter",
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type: "output",
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factory: function(el, width, height) {
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var axOpts;
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var apexchart = null;
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return {
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renderValue: function(x) {
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// Global options
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axOpts = x.ax_opts;
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// Sizing
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if (typeof axOpts.chart === "undefined") {
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axOpts.chart = {};
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}
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axOpts.chart.width = width;
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axOpts.chart.height = height;
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if (!axOpts.chart.hasOwnProperty("parentHeightOffset")) {
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axOpts.chart.parentHeightOffset = 0;
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}
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// added events to remove minheight container
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if (!axOpts.chart.hasOwnProperty("events")) {
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axOpts.chart.events = {};
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}
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if (!axOpts.chart.events.hasOwnProperty("mounted")) {
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axOpts.chart.events.mounted = function(chartContext, config) {
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el.style.minHeight = 0;
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};
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}
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if (!axOpts.chart.events.hasOwnProperty("updated")) {
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axOpts.chart.events.updated = function(chartContext, config) {
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el.style.minHeight = 0;
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};
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}
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if (x.hasOwnProperty("shinyEvents") & HTMLWidgets.shinyMode) {
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if (!axOpts.hasOwnProperty("chart")) {
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axOpts.chart = {};
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}
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if (!axOpts.chart.hasOwnProperty("events")) {
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axOpts.chart.events = {};
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}
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if (x.shinyEvents.hasOwnProperty("click")) {
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axOpts.chart.events.dataPointSelection = function(
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event,
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chartContext,
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opts
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) {
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var options = opts;
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var nonEmpty = opts.selectedDataPoints.filter(function(el) {
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return el !== null && el.length > 0;
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});
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if (nonEmpty.length > 0) {
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var select = {};
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for (var i = 0; i < opts.selectedDataPoints.length; i++) {
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if (typeof opts.selectedDataPoints[i] === "undefined") {
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continue;
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}
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var selection = getSelection(
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chartContext,
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options.selectedDataPoints,
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i
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);
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if (selection !== null) {
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if (opts.w.config.series[i].hasOwnProperty("name")) {
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var name = opts.w.config.series[i].name;
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select[name] = selection;
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} else {
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select[i] = selection;
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}
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}
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}
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if (is_single(options)) {
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select = select[Object.keys(select)[0]];
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}
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Shiny.setInputValue(
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x.shinyEvents.click.inputId + ":apex_click",
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{ value: select, datetime: is_datetime(chartContext) }
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);
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} else {
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Shiny.setInputValue(x.shinyEvents.click.inputId, null);
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}
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};
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}
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if (x.shinyEvents.hasOwnProperty("zoomed")) {
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axOpts.chart.events.zoomed = function(chartContext, xaxis, yaxis) {
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var id = x.shinyEvents.zoomed.inputId;
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if (is_datetime(chartContext)) {
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id = id + ":apex_datetime";
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}
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Shiny.setInputValue(id, {
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x: getXaxis(xaxis),
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y: getYaxis(xaxis)
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});
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};
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}
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if (x.shinyEvents.hasOwnProperty("selection")) {
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axOpts.chart.events.selection = function(
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chartContext,
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xaxis,
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yaxis
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) {
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var id = x.shinyEvents.selection.inputId;
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if (is_datetime(chartContext)) {
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id = id + ":apex_datetime";
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}
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var selectionValue;
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if (x.shinyEvents.selection.type === "x") {
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selectionValue = { x: xaxis.xaxis };
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} else if (x.shinyEvents.selection.type === "xy") {
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selectionValue = { x: xaxis.xaxis, y: getYaxis(xaxis) };
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} else if (x.shinyEvents.selection.type === "y") {
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selectionValue = { y: getYaxis(xaxis) };
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}
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Shiny.setInputValue(id, selectionValue);
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};
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}
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}
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// Generate or update chart
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if (apexchart === null) {
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apexchart = new ApexCharts(el, axOpts);
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apexchart.render();
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} else {
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if (x.auto_update) {
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//console.log(x.auto_update);
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apexchart.updateSeries(axOpts.series, x.auto_update.series_animate);
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if (x.auto_update.update_options) {
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delete axOpts.series;
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delete axOpts.chart.width;
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delete axOpts.chart.height;
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apexchart.updateOptions(
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axOpts,
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x.auto_update.options_redrawPaths,
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x.auto_update.options_animate,
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x.auto_update.update_synced_charts
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);
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}
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} else {
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apexchart.destroy();
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apexchart = new ApexCharts(el, axOpts);
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apexchart.render();
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}
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}
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},
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getChart: function() {
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return apexchart;
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},
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resize: function(width, height) {
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apexchart.updateOptions({
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chart: {
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width: width,
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height: height
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}
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});
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}
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};
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}
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});
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if (HTMLWidgets.shinyMode) {
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// update serie
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Shiny.addCustomMessageHandler("update-apexchart-series", function(obj) {
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var chart = get_widget(obj.id);
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if (typeof chart != "undefined") {
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chart.updateSeries(
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[
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{
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data: obj.data.newSeries
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}
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],
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obj.data.animate
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);
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}
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});
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// update options
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Shiny.addCustomMessageHandler("update-apexchart-options", function(obj) {
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var chart = get_widget(obj.id);
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if (typeof chart != "undefined") {
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chart.updateOptions(obj.data.options);
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}
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});
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}
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