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static/lib/Highcharts-10.2.1/es-modules/Extensions/NoDataToDisplay.js

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+/* *
+ *
+ *  Plugin for displaying a message when there is no data visible in chart.
+ *
+ *  (c) 2010-2021 Highsoft AS
+ *
+ *  Author: Oystein Moseng
+ *
+ *  License: www.highcharts.com/license
+ *
+ *  !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!!
+ *
+ * */
+import AST from '../Core/Renderer/HTML/AST.js';
+import Chart from '../Core/Chart/Chart.js';
+import D from '../Core/DefaultOptions.js';
+var getOptions = D.getOptions;
+import U from '../Core/Utilities.js';
+var addEvent = U.addEvent, extend = U.extend;
+var chartPrototype = Chart.prototype, defaultOptions = getOptions();
+// Add language option
+extend(defaultOptions.lang, 
+/**
+ * @optionparent lang
+ */
+{
+    /**
+     * The text to display when the chart contains no data.
+     *
+     * @see [noData](#noData)
+     *
+     * @sample highcharts/no-data-to-display/no-data-line
+     *         No-data text
+     *
+     * @since    3.0.8
+     * @product  highcharts highstock
+     * @requires modules/no-data-to-display
+     */
+    noData: 'No data to display'
+});
+// Add default display options for message
+/**
+ * Options for displaying a message like "No data to display".
+ * This feature requires the file no-data-to-display.js to be loaded in the
+ * page. The actual text to display is set in the lang.noData option.
+ *
+ * @sample highcharts/no-data-to-display/no-data-line
+ *         Line chart with no-data module
+ * @sample highcharts/no-data-to-display/no-data-pie
+ *         Pie chart with no-data module
+ *
+ * @product      highcharts highstock gantt
+ * @requires     modules/no-data-to-display
+ * @optionparent noData
+ */
+defaultOptions.noData = {
+    /**
+     * An object of additional SVG attributes for the no-data label.
+     *
+     * @type      {Highcharts.SVGAttributes}
+     * @since     3.0.8
+     * @product   highcharts highstock gantt
+     * @apioption noData.attr
+     */
+    attr: {
+        zIndex: 1
+    },
+    /**
+     * Whether to insert the label as HTML, or as pseudo-HTML rendered with
+     * SVG.
+     *
+     * @type      {boolean}
+     * @default   false
+     * @since     4.1.10
+     * @product   highcharts highstock gantt
+     * @apioption noData.useHTML
+     */
+    /**
+     * The position of the no-data label, relative to the plot area.
+     *
+     * @type  {Highcharts.AlignObject}
+     * @since 3.0.8
+     */
+    position: {
+        /**
+         * Horizontal offset of the label, in pixels.
+         */
+        x: 0,
+        /**
+         * Vertical offset of the label, in pixels.
+         */
+        y: 0,
+        /**
+         * Horizontal alignment of the label.
+         *
+         * @type {Highcharts.AlignValue}
+         */
+        align: 'center',
+        /**
+         * Vertical alignment of the label.
+         *
+         * @type {Highcharts.VerticalAlignValue}
+         */
+        verticalAlign: 'middle'
+    },
+    /**
+     * CSS styles for the no-data label.
+     *
+     * @sample highcharts/no-data-to-display/no-data-line
+     *         Styled no-data text
+     *
+     * @type {Highcharts.CSSObject}
+     */
+    style: {
+        /** @ignore */
+        fontWeight: 'bold',
+        /** @ignore */
+        fontSize: '12px',
+        /** @ignore */
+        color: "#666666" /* Palette.neutralColor60 */
+    }
+};
+/**
+ * Display a no-data message.
+ * @private
+ * @function Highcharts.Chart#showNoData
+ * @param {string} [str]
+ * An optional message to show in place of the default one
+ * @return {void}
+ * @requires modules/no-data-to-display
+ */
+chartPrototype.showNoData = function (str) {
+    var chart = this, options = chart.options, text = str || (options && options.lang.noData) || '', noDataOptions = options && (options.noData || {});
+    if (chart.renderer) { // Meaning chart is not destroyed
+        if (!chart.noDataLabel) {
+            chart.noDataLabel = chart.renderer
+                .label(text, 0, 0, void 0, void 0, void 0, noDataOptions.useHTML, void 0, 'no-data')
+                .add();
+        }
+        if (!chart.styledMode) {
+            chart.noDataLabel
+                .attr(AST.filterUserAttributes(noDataOptions.attr || {}))
+                .css(noDataOptions.style || {});
+        }
+        chart.noDataLabel.align(extend(chart.noDataLabel.getBBox(), noDataOptions.position || {}), false, 'plotBox');
+    }
+};
+/**
+ * Hide no-data message.
+ *
+ * @private
+ * @function Highcharts.Chart#hideNoData
+ * @return {void}
+ * @requires modules/no-data-to-display
+ */
+chartPrototype.hideNoData = function () {
+    var chart = this;
+    if (chart.noDataLabel) {
+        chart.noDataLabel = chart.noDataLabel.destroy();
+    }
+};
+/**
+ * Returns true if there are data points within the plot area now.
+ *
+ * @private
+ * @function Highcharts.Chart#hasData
+ * @return {boolean|undefined}
+ * True, if there are data points.
+ * @requires modules/no-data-to-display
+ */
+chartPrototype.hasData = function () {
+    var chart = this, series = chart.series || [], i = series.length;
+    while (i--) {
+        if (series[i].hasData() && !series[i].options.isInternal) {
+            return true;
+        }
+    }
+    return chart.loadingShown; // #4588
+};
+/* eslint-disable no-invalid-this */
+// Add event listener to handle automatic show or hide no-data message.
+addEvent(Chart, 'render', function handleNoData() {
+    if (this.hasData()) {
+        this.hideNoData();
+    }
+    else {
+        this.showNoData();
+    }
+});