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This commit is contained in:
@@ -0,0 +1,899 @@
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/* *
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*
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* (c) 2009-2021 Øystein Moseng
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*
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* Default options for accessibility.
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*
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* License: www.highcharts.com/license
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*
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* !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!!
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*
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* */
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'use strict';
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/* *
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*
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* API Options
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*
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* */
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/**
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* Formatter callback for the accessibility announcement.
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*
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* @callback Highcharts.AccessibilityAnnouncementFormatter
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*
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* @param {Array<Highcharts.Series>} updatedSeries
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* Array of all series that received updates. If an announcement is already
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* queued, the series that received updates for that announcement are also
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* included in this array.
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*
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* @param {Highcharts.Series} [addedSeries]
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* This is provided if {@link Highcharts.Chart#addSeries} was called, and there
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* is a new series. In that case, this argument is a reference to the new
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* series.
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*
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* @param {Highcharts.Point} [addedPoint]
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* This is provided if {@link Highcharts.Series#addPoint} was called, and there
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* is a new point. In that case, this argument is a reference to the new point.
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*
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* @return {false|string}
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* The function should return a string with the text to announce to the user.
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* Return empty string to not announce anything. Return `false` to use the
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* default announcement format.
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*/
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/**
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* @interface Highcharts.PointAccessibilityOptionsObject
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*/ /**
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* Provide a description of the data point, announced to screen readers.
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* @name Highcharts.PointAccessibilityOptionsObject#description
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* @type {string|undefined}
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* @requires modules/accessibility
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* @since 7.1.0
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*/ /**
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* Enable or disable exposing the point to assistive technology
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* @name Highcharts.PointAccessibilityOptionsObject#enabled
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* @type {boolean|undefined}
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* @requires modules/accessibility
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* @since 9.0.1
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*/
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/* *
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* @interface Highcharts.PointOptionsObject in parts/Point.ts
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*/ /**
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* @name Highcharts.PointOptionsObject#accessibility
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* @type {Highcharts.PointAccessibilityOptionsObject|undefined}
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* @requires modules/accessibility
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* @since 7.1.0
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*/
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/**
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* @callback Highcharts.ScreenReaderClickCallbackFunction
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*
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* @param {global.MouseEvent} evt
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* Mouse click event
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*
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* @return {void}
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*/
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/**
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* Creates a formatted string for the screen reader module.
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*
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* @callback Highcharts.ScreenReaderFormatterCallbackFunction<T>
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*
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* @param {T} context
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* Context to format
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*
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* @return {string}
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* Formatted string for the screen reader module.
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*/
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var Options = {
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/**
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* Options for configuring accessibility for the chart. Requires the
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* [accessibility module](https://code.highcharts.com/modules/accessibility.js)
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* to be loaded. For a description of the module and information
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* on its features, see
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* [Highcharts Accessibility](https://www.highcharts.com/docs/accessibility/accessibility-module).
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||||
*
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||||
* @since 5.0.0
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* @requires modules/accessibility
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* @optionparent accessibility
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||||
*/
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accessibility: {
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/**
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||||
* Enable accessibility functionality for the chart. For more
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* information on how to include these features, and why this is
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* recommended, see [Highcharts Accessibility](https://www.highcharts.com/docs/accessibility/accessibility-module).
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*
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* Highcharts will by default emit a warning to the console if
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* the [accessibility module](https://code.highcharts.com/modules/accessibility.js)
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* is not loaded. Setting this option to `false` will override
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||||
* and silence the warning.
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*
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* Once the module is loaded, setting this option to `false`
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||||
* will disable the module for this chart.
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||||
*
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* @since 5.0.0
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*/
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enabled: true,
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||||
/**
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||||
* Accessibility options for the screen reader information sections
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||||
* added before and after the chart.
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*
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* @since 8.0.0
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*/
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screenReaderSection: {
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||||
/**
|
||||
* Function to run upon clicking the "View as Data Table" link in
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||||
* the screen reader region.
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||||
*
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||||
* By default Highcharts will insert and set focus to a data table
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||||
* representation of the chart.
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||||
*
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||||
* @type {Highcharts.ScreenReaderClickCallbackFunction}
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||||
* @since 8.0.0
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||||
* @apioption accessibility.screenReaderSection.onViewDataTableClick
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||||
*/
|
||||
/**
|
||||
* Function to run upon clicking the "Play as sound" button in
|
||||
* the screen reader region.
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||||
*
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||||
* By default Highcharts will call the `chart.sonify` function.
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||||
*
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||||
* @type {Highcharts.ScreenReaderClickCallbackFunction}
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||||
* @since 8.0.1
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||||
* @apioption accessibility.screenReaderSection.onPlayAsSoundClick
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||||
*/
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||||
/**
|
||||
* A formatter function to create the HTML contents of the hidden
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||||
* screen reader information region before the chart. Receives one
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||||
* argument, `chart`, referring to the chart object. Should return a
|
||||
* string with the HTML content of the region. By default this
|
||||
* returns an automatic description of the chart based on
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||||
* [beforeChartFormat](#accessibility.screenReaderSection.beforeChartFormat).
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||||
*
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||||
* @type {Highcharts.ScreenReaderFormatterCallbackFunction<Highcharts.Chart>}
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||||
* @since 8.0.0
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||||
* @apioption accessibility.screenReaderSection.beforeChartFormatter
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||||
*/
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||||
/**
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||||
* Format for the screen reader information region before the chart.
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||||
* Supported HTML tags are `<h1-6>`, `<p>`, `<div>`, `<a>`, `<ul>`,
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* `<ol>`, `<li>`, and `<button>`. Attributes are not supported,
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||||
* except for id on `<div>`, `<a>`, and `<button>`. Id is required
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* on `<a>` and `<button>` in the format `<tag id="abcd">`. Numbers,
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* lower- and uppercase letters, "-" and "#" are valid characters in
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* IDs.
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*
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* The headingTagName is an auto-detected heading (h1-h6) that
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* corresponds to the heading level below the previous heading in
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* the DOM.
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*
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* Set to empty string to remove the region altogether.
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||||
*
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||||
* @since 8.0.0
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||||
*/
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beforeChartFormat: '<{headingTagName}>{chartTitle}</{headingTagName}>' +
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'<div>{typeDescription}</div>' +
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'<div>{chartSubtitle}</div>' +
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'<div>{chartLongdesc}</div>' +
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'<div>{playAsSoundButton}</div>' +
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'<div>{viewTableButton}</div>' +
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'<div>{xAxisDescription}</div>' +
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'<div>{yAxisDescription}</div>' +
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'<div>{annotationsTitle}{annotationsList}</div>',
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||||
/**
|
||||
* A formatter function to create the HTML contents of the hidden
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||||
* screen reader information region after the chart. Analogous to
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* [beforeChartFormatter](#accessibility.screenReaderSection.beforeChartFormatter).
|
||||
*
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||||
* @type {Highcharts.ScreenReaderFormatterCallbackFunction<Highcharts.Chart>}
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||||
* @since 8.0.0
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||||
* @apioption accessibility.screenReaderSection.afterChartFormatter
|
||||
*/
|
||||
/**
|
||||
* Format for the screen reader information region after the chart.
|
||||
* Analogous to [beforeChartFormat](#accessibility.screenReaderSection.beforeChartFormat).
|
||||
*
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||||
* @since 8.0.0
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||||
*/
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||||
afterChartFormat: '{endOfChartMarker}',
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||||
/**
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||||
* Date format to use to describe range of datetime axes.
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||||
*
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||||
* For an overview of the replacement codes, see
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||||
* [dateFormat](/class-reference/Highcharts.Time#dateFormat).
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||||
*
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||||
* @see [point.dateFormat](#accessibility.point.dateFormat)
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||||
*
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||||
* @since 8.0.0
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||||
*/
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axisRangeDateFormat: '%Y-%m-%d %H:%M:%S'
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},
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||||
/**
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||||
* Accessibility options global to all data series. Individual series
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||||
* can also have specific [accessibility options](#plotOptions.series.accessibility)
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||||
* set.
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||||
*
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||||
* @since 8.0.0
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||||
*/
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||||
series: {
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||||
/**
|
||||
* Formatter function to use instead of the default for series
|
||||
* descriptions. Receives one argument, `series`, referring to the
|
||||
* series to describe. Should return a string with the description
|
||||
* of the series for a screen reader user. If `false` is returned,
|
||||
* the default formatter will be used for that series.
|
||||
*
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||||
* @see [series.descriptionFormat](#accessibility.series.descriptionFormat)
|
||||
* @see [series.description](#plotOptions.series.description)
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||||
*
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||||
* @type {Highcharts.ScreenReaderFormatterCallbackFunction<Highcharts.Series>}
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||||
* @since 8.0.0
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||||
* @apioption accessibility.series.descriptionFormatter
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||||
*/
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||||
/**
|
||||
* Format to use for describing the data series group to assistive
|
||||
* technology - including screen readers.
|
||||
*
|
||||
* The series context and its subproperties are available under the
|
||||
* variable `{series}`, for example `{series.name}` for the series
|
||||
* name, and `{series.points.length}` for the number of data points.
|
||||
*
|
||||
* The chart context and its subproperties are available under the
|
||||
* variable `{chart}`, for example `{chart.series.length}` for the
|
||||
* number of series in the chart.
|
||||
*
|
||||
* `{seriesDescription}` refers to the automatic description of the
|
||||
* series type and number of points added by Highcharts by default.
|
||||
* `{authorDescription}` refers to the description added in
|
||||
* [series.description](#plotOptions.series.description) if one is
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||||
* present. `{axisDescription}` refers to the description added if
|
||||
* the chart has multiple X or Y axes.
|
||||
*
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||||
* Note that if [series.descriptionFormatter](#accessibility.series.descriptionFormatter)
|
||||
* is declared it will take precedence, and this option will be
|
||||
* overridden.
|
||||
*
|
||||
* @sample highcharts/accessibility/advanced-accessible
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||||
* Accessible low-medium-high chart
|
||||
*
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||||
* @type {string}
|
||||
* @since 10.1.0
|
||||
*/
|
||||
descriptionFormat: '{seriesDescription}{authorDescription}{axisDescription}',
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||||
/**
|
||||
* Whether or not to add series descriptions to charts with a single
|
||||
* series.
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||||
*
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||||
* @since 8.0.0
|
||||
*/
|
||||
describeSingleSeries: false,
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||||
/**
|
||||
* When a series contains more points than this, we no longer expose
|
||||
* information about individual points to screen readers.
|
||||
*
|
||||
* Set to `false` to disable.
|
||||
*
|
||||
* @type {boolean|number}
|
||||
* @since 8.0.0
|
||||
*/
|
||||
pointDescriptionEnabledThreshold: 200
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||||
},
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||||
/**
|
||||
* Options for descriptions of individual data points.
|
||||
*
|
||||
* @since 8.0.0
|
||||
*/
|
||||
point: {
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||||
/**
|
||||
* Date format to use for points on datetime axes when describing
|
||||
* them to screen reader users.
|
||||
*
|
||||
* Defaults to the same format as in tooltip.
|
||||
*
|
||||
* For an overview of the replacement codes, see
|
||||
* [dateFormat](/class-reference/Highcharts.Time#dateFormat).
|
||||
*
|
||||
* @see [dateFormatter](#accessibility.point.dateFormatter)
|
||||
*
|
||||
* @type {string}
|
||||
* @since 8.0.0
|
||||
* @apioption accessibility.point.dateFormat
|
||||
*/
|
||||
/**
|
||||
* Formatter function to determine the date/time format used with
|
||||
* points on datetime axes when describing them to screen reader
|
||||
* users. Receives one argument, `point`, referring to the point
|
||||
* to describe. Should return a date format string compatible with
|
||||
* [dateFormat](/class-reference/Highcharts.Time#dateFormat).
|
||||
*
|
||||
* @see [dateFormat](#accessibility.point.dateFormat)
|
||||
*
|
||||
* @type {Highcharts.ScreenReaderFormatterCallbackFunction<Highcharts.Point>}
|
||||
* @since 8.0.0
|
||||
* @apioption accessibility.point.dateFormatter
|
||||
*/
|
||||
/**
|
||||
* Prefix to add to the values in the point descriptions. Uses
|
||||
* [tooltip.valuePrefix](#tooltip.valuePrefix) if not defined.
|
||||
*
|
||||
* @type {string}
|
||||
* @since 8.0.0
|
||||
* @apioption accessibility.point.valuePrefix
|
||||
*/
|
||||
/**
|
||||
* Suffix to add to the values in the point descriptions. Uses
|
||||
* [tooltip.valueSuffix](#tooltip.valueSuffix) if not defined.
|
||||
*
|
||||
* @type {string}
|
||||
* @since 8.0.0
|
||||
* @apioption accessibility.point.valueSuffix
|
||||
*/
|
||||
/**
|
||||
* Decimals to use for the values in the point descriptions. Uses
|
||||
* [tooltip.valueDecimals](#tooltip.valueDecimals) if not defined.
|
||||
*
|
||||
* @type {number}
|
||||
* @since 8.0.0
|
||||
* @apioption accessibility.point.valueDecimals
|
||||
*/
|
||||
/**
|
||||
* Formatter function to use instead of the default for point
|
||||
* descriptions.
|
||||
*
|
||||
* Receives one argument, `point`, referring to the point to
|
||||
* describe. Should return a string with the description of the
|
||||
* point for a screen reader user. If `false` is returned, the
|
||||
* default formatter will be used for that point.
|
||||
*
|
||||
* Note: Prefer using [accessibility.point.valueDescriptionFormat](#accessibility.point.valueDescriptionFormat)
|
||||
* instead if possible, as default functionality such as describing
|
||||
* annotations will be preserved.
|
||||
*
|
||||
* @see [accessibility.point.valueDescriptionFormat](#accessibility.point.valueDescriptionFormat)
|
||||
* @see [point.accessibility.description](#series.line.data.accessibility.description)
|
||||
*
|
||||
* @type {Highcharts.ScreenReaderFormatterCallbackFunction<Highcharts.Point>}
|
||||
* @since 8.0.0
|
||||
* @apioption accessibility.point.descriptionFormatter
|
||||
*/
|
||||
/**
|
||||
* Format to use for describing the values of data points
|
||||
* to assistive technology - including screen readers.
|
||||
* The point context is available as `{point}`.
|
||||
*
|
||||
* Other available context variables include `{index}`, `{value}`, and `{xDescription}`.
|
||||
*
|
||||
* Additionally, the series name, annotation info, and
|
||||
* description added in `point.accessibility.description`
|
||||
* is added by default if relevant. To override this, use the
|
||||
* [accessibility.point.descriptionFormatter](#accessibility.point.descriptionFormatter)
|
||||
* option.
|
||||
*
|
||||
* @see [point.accessibility.description](#series.line.data.accessibility.description)
|
||||
* @see [accessibility.point.descriptionFormatter](#accessibility.point.descriptionFormatter)
|
||||
*
|
||||
* @type {string}
|
||||
* @since 8.0.1
|
||||
*/
|
||||
valueDescriptionFormat: '{xDescription}{separator}{value}.',
|
||||
/**
|
||||
* Whether or not to describe points with the value `null` to
|
||||
* assistive technology, such as screen readers.
|
||||
*
|
||||
* @sample {highmaps} maps/demo/all-areas-as-null
|
||||
* Accessible map with null points
|
||||
*
|
||||
* @type {boolean}
|
||||
* @since 10.1.0
|
||||
*/
|
||||
describeNull: true
|
||||
},
|
||||
/**
|
||||
* Amount of landmarks/regions to create for screen reader users. More
|
||||
* landmarks can make navigation with screen readers easier, but can
|
||||
* be distracting if there are lots of charts on the page. Three modes
|
||||
* are available:
|
||||
* - `all`: Adds regions for all series, legend, information
|
||||
* region.
|
||||
* - `one`: Adds a single landmark per chart.
|
||||
* - `disabled`: No landmarks are added.
|
||||
*
|
||||
* @since 7.1.0
|
||||
* @validvalue ["all", "one", "disabled"]
|
||||
*/
|
||||
landmarkVerbosity: 'all',
|
||||
/**
|
||||
* Link the chart to an HTML element describing the contents of the
|
||||
* chart.
|
||||
*
|
||||
* It is always recommended to describe charts using visible text, to
|
||||
* improve SEO as well as accessibility for users with disabilities.
|
||||
* This option lets an HTML element with a description be linked to the
|
||||
* chart, so that screen reader users can connect the two.
|
||||
*
|
||||
* By setting this option to a string, Highcharts runs the string as an
|
||||
* HTML selector query on the entire document. If there is only a single
|
||||
* match, this element is linked to the chart. The content of the linked
|
||||
* element will be included in the chart description for screen reader
|
||||
* users.
|
||||
*
|
||||
* By default, the chart looks for an adjacent sibling element with the
|
||||
* `highcharts-description` class.
|
||||
*
|
||||
* The feature can be disabled by setting the option to an empty string,
|
||||
* or overridden by providing the
|
||||
* [accessibility.description](#accessibility.description) option.
|
||||
* Alternatively, the HTML element to link can be passed in directly as
|
||||
* an HTML node.
|
||||
*
|
||||
* If you need the description to be part of the exported image,
|
||||
* consider using the [caption](#caption) feature.
|
||||
*
|
||||
* If you need the description to be hidden visually, use the
|
||||
* [accessibility.description](#accessibility.description) option.
|
||||
*
|
||||
* @see [caption](#caption)
|
||||
* @see [description](#accessibility.description)
|
||||
* @see [typeDescription](#accessibility.typeDescription)
|
||||
*
|
||||
* @sample highcharts/accessibility/accessible-line
|
||||
* Accessible line chart
|
||||
*
|
||||
* @type {string|Highcharts.HTMLDOMElement}
|
||||
* @since 8.0.0
|
||||
*/
|
||||
linkedDescription: '*[data-highcharts-chart="{index}"] + .highcharts-description',
|
||||
/**
|
||||
* A hook for adding custom components to the accessibility module.
|
||||
* Should be an object mapping component names to instances of classes
|
||||
* inheriting from the Highcharts.AccessibilityComponent base class.
|
||||
* Remember to add the component to the
|
||||
* [keyboardNavigation.order](#accessibility.keyboardNavigation.order)
|
||||
* for the keyboard navigation to be usable.
|
||||
*
|
||||
* @sample highcharts/accessibility/custom-component
|
||||
* Custom accessibility component
|
||||
*
|
||||
* @type {*}
|
||||
* @since 7.1.0
|
||||
* @apioption accessibility.customComponents
|
||||
*/
|
||||
/**
|
||||
* Theme to apply to the chart when Windows High Contrast Mode is
|
||||
* detected. By default, a high contrast theme matching the high
|
||||
* contrast system system colors is used.
|
||||
*
|
||||
* @type {*}
|
||||
* @since 7.1.3
|
||||
* @apioption accessibility.highContrastTheme
|
||||
*/
|
||||
/**
|
||||
* A text description of the chart.
|
||||
*
|
||||
* **Note: Prefer using [linkedDescription](#accessibility.linkedDescription)
|
||||
* or [caption](#caption.text) instead.**
|
||||
*
|
||||
* If the Accessibility module is loaded, this option is included by
|
||||
* default as a long description of the chart in the hidden screen
|
||||
* reader information region.
|
||||
*
|
||||
* Note: Since Highcharts now supports captions and linked descriptions,
|
||||
* it is preferred to define the description using those methods, as a
|
||||
* visible caption/description benefits all users. If the
|
||||
* `accessibility.description` option is defined, the linked description
|
||||
* is ignored, and the caption is hidden from screen reader users.
|
||||
*
|
||||
* @see [linkedDescription](#accessibility.linkedDescription)
|
||||
* @see [caption](#caption)
|
||||
* @see [typeDescription](#accessibility.typeDescription)
|
||||
*
|
||||
* @type {string}
|
||||
* @since 5.0.0
|
||||
* @apioption accessibility.description
|
||||
*/
|
||||
/**
|
||||
* A text description of the chart type.
|
||||
*
|
||||
* If the Accessibility module is loaded, this will be included in the
|
||||
* description of the chart in the screen reader information region.
|
||||
*
|
||||
* Highcharts will by default attempt to guess the chart type, but for
|
||||
* more complex charts it is recommended to specify this property for
|
||||
* clarity.
|
||||
*
|
||||
* @type {string}
|
||||
* @since 5.0.0
|
||||
* @apioption accessibility.typeDescription
|
||||
*/
|
||||
/**
|
||||
* Options for keyboard navigation.
|
||||
*
|
||||
* @declare Highcharts.KeyboardNavigationOptionsObject
|
||||
* @since 5.0.0
|
||||
*/
|
||||
keyboardNavigation: {
|
||||
/**
|
||||
* Enable keyboard navigation for the chart.
|
||||
*
|
||||
* @since 5.0.0
|
||||
*/
|
||||
enabled: true,
|
||||
/**
|
||||
* Options for the focus border drawn around elements while
|
||||
* navigating through them.
|
||||
*
|
||||
* @sample highcharts/accessibility/custom-focus
|
||||
* Custom focus ring
|
||||
*
|
||||
* @declare Highcharts.KeyboardNavigationFocusBorderOptionsObject
|
||||
* @since 6.0.3
|
||||
*/
|
||||
focusBorder: {
|
||||
/**
|
||||
* Enable/disable focus border for chart.
|
||||
*
|
||||
* @since 6.0.3
|
||||
*/
|
||||
enabled: true,
|
||||
/**
|
||||
* Hide the browser's default focus indicator.
|
||||
*
|
||||
* @since 6.0.4
|
||||
*/
|
||||
hideBrowserFocusOutline: true,
|
||||
/**
|
||||
* Style options for the focus border drawn around elements
|
||||
* while navigating through them. Note that some browsers in
|
||||
* addition draw their own borders for focused elements. These
|
||||
* automatic borders cannot be styled by Highcharts.
|
||||
*
|
||||
* In styled mode, the border is given the
|
||||
* `.highcharts-focus-border` class.
|
||||
*
|
||||
* @type {Highcharts.CSSObject}
|
||||
* @since 6.0.3
|
||||
*/
|
||||
style: {
|
||||
/** @internal */
|
||||
color: "#335cad" /* Palette.highlightColor80 */,
|
||||
/** @internal */
|
||||
lineWidth: 2,
|
||||
/** @internal */
|
||||
borderRadius: 3
|
||||
},
|
||||
/**
|
||||
* Focus border margin around the elements.
|
||||
*
|
||||
* @since 6.0.3
|
||||
*/
|
||||
margin: 2
|
||||
},
|
||||
/**
|
||||
* Order of tab navigation in the chart. Determines which elements
|
||||
* are tabbed to first. Available elements are: `series`, `zoom`,
|
||||
* `rangeSelector`, `chartMenu`, `legend` and `container`. In
|
||||
* addition, any custom components can be added here. Adding
|
||||
* `container` first in order will make the keyboard focus stop on
|
||||
* the chart container first, requiring the user to tab again to
|
||||
* enter the chart.
|
||||
*
|
||||
* @type {Array<string>}
|
||||
* @since 7.1.0
|
||||
*/
|
||||
order: ['series', 'zoom', 'rangeSelector', 'legend', 'chartMenu'],
|
||||
/**
|
||||
* Whether or not to wrap around when reaching the end of arrow-key
|
||||
* navigation for an element in the chart.
|
||||
* @since 7.1.0
|
||||
*/
|
||||
wrapAround: true,
|
||||
/**
|
||||
* Options for the keyboard navigation of data points and series.
|
||||
*
|
||||
* @declare Highcharts.KeyboardNavigationSeriesNavigationOptionsObject
|
||||
* @since 8.0.0
|
||||
*/
|
||||
seriesNavigation: {
|
||||
/**
|
||||
* Set the keyboard navigation mode for the chart. Can be
|
||||
* "normal" or "serialize". In normal mode, left/right arrow
|
||||
* keys move between points in a series, while up/down arrow
|
||||
* keys move between series. Up/down navigation acts
|
||||
* intelligently to figure out which series makes sense to move
|
||||
* to from any given point.
|
||||
*
|
||||
* In "serialize" mode, points are instead navigated as a single
|
||||
* list. Left/right behaves as in "normal" mode. Up/down arrow
|
||||
* keys will behave like left/right. This can be useful for
|
||||
* unifying navigation behavior with/without screen readers
|
||||
* enabled.
|
||||
*
|
||||
* @type {string}
|
||||
* @default normal
|
||||
* @since 8.0.0
|
||||
* @validvalue ["normal", "serialize"]
|
||||
* @apioption accessibility.keyboardNavigation.seriesNavigation.mode
|
||||
*/
|
||||
/**
|
||||
* Skip null points when navigating through points with the
|
||||
* keyboard.
|
||||
*
|
||||
* @since 8.0.0
|
||||
*/
|
||||
skipNullPoints: true,
|
||||
/**
|
||||
* When a series contains more points than this, we no longer
|
||||
* allow keyboard navigation for it.
|
||||
*
|
||||
* Set to `false` to disable.
|
||||
*
|
||||
* @type {boolean|number}
|
||||
* @since 8.0.0
|
||||
*/
|
||||
pointNavigationEnabledThreshold: false,
|
||||
/**
|
||||
* Remember which point was focused even after navigating away
|
||||
* from the series, so that when navigating back to the series
|
||||
* you start at the last focused point.
|
||||
*
|
||||
* @type {boolean}
|
||||
* @since 10.1.0
|
||||
*/
|
||||
rememberPointFocus: false
|
||||
}
|
||||
},
|
||||
/**
|
||||
* Options for announcing new data to screen reader users. Useful
|
||||
* for dynamic data applications and drilldown.
|
||||
*
|
||||
* Keep in mind that frequent announcements will not be useful to
|
||||
* users, as they won't have time to explore the new data. For these
|
||||
* applications, consider making snapshots of the data accessible, and
|
||||
* do the announcements in batches.
|
||||
*
|
||||
* @declare Highcharts.AccessibilityAnnounceNewDataOptionsObject
|
||||
* @since 7.1.0
|
||||
*/
|
||||
announceNewData: {
|
||||
/**
|
||||
* Optional formatter callback for the announcement. Receives
|
||||
* up to three arguments. The first argument is always an array
|
||||
* of all series that received updates. If an announcement is
|
||||
* already queued, the series that received updates for that
|
||||
* announcement are also included in this array. The second
|
||||
* argument is provided if `chart.addSeries` was called, and
|
||||
* there is a new series. In that case, this argument is a
|
||||
* reference to the new series. The third argument, similarly,
|
||||
* is provided if `series.addPoint` was called, and there is a
|
||||
* new point. In that case, this argument is a reference to the
|
||||
* new point.
|
||||
*
|
||||
* The function should return a string with the text to announce
|
||||
* to the user. Return empty string to not announce anything.
|
||||
* Return `false` to use the default announcement format.
|
||||
*
|
||||
* @sample highcharts/accessibility/custom-dynamic
|
||||
* High priority live alerts
|
||||
*
|
||||
* @type {Highcharts.AccessibilityAnnouncementFormatter}
|
||||
* @apioption accessibility.announceNewData.announcementFormatter
|
||||
*/
|
||||
/**
|
||||
* Enable announcing new data to screen reader users
|
||||
* @sample highcharts/accessibility/accessible-dynamic
|
||||
* Dynamic data accessible
|
||||
*/
|
||||
enabled: false,
|
||||
/**
|
||||
* Minimum interval between announcements in milliseconds. If
|
||||
* new data arrives before this amount of time has passed, it is
|
||||
* queued for announcement. If another new data event happens
|
||||
* while an announcement is queued, the queued announcement is
|
||||
* dropped, and the latest announcement is queued instead. Set
|
||||
* to 0 to allow all announcements, but be warned that frequent
|
||||
* announcements are disturbing to users.
|
||||
*/
|
||||
minAnnounceInterval: 5000,
|
||||
/**
|
||||
* Choose whether or not the announcements should interrupt the
|
||||
* screen reader. If not enabled, the user will be notified once
|
||||
* idle. It is recommended not to enable this setting unless
|
||||
* there is a specific reason to do so.
|
||||
*/
|
||||
interruptUser: false
|
||||
}
|
||||
},
|
||||
/**
|
||||
* Accessibility options for a data point.
|
||||
*
|
||||
* @declare Highcharts.PointAccessibilityOptionsObject
|
||||
* @since 7.1.0
|
||||
* @apioption series.line.data.accessibility
|
||||
*/
|
||||
/**
|
||||
* Provide a description of the data point, announced to screen readers.
|
||||
*
|
||||
* @type {string}
|
||||
* @since 7.1.0
|
||||
* @apioption series.line.data.accessibility.description
|
||||
*/
|
||||
/**
|
||||
* Set to false to disable accessibility functionality for a specific point.
|
||||
* The point will not be included in keyboard navigation, and will not be
|
||||
* exposed to assistive technology.
|
||||
*
|
||||
* @type {boolean}
|
||||
* @since 9.0.1
|
||||
* @apioption series.line.data.accessibility.enabled
|
||||
*/
|
||||
/**
|
||||
* Accessibility options for a series.
|
||||
*
|
||||
* @declare Highcharts.SeriesAccessibilityOptionsObject
|
||||
* @since 7.1.0
|
||||
* @requires modules/accessibility
|
||||
* @apioption plotOptions.series.accessibility
|
||||
*/
|
||||
/**
|
||||
* Enable/disable accessibility functionality for a specific series.
|
||||
*
|
||||
* @type {boolean}
|
||||
* @since 7.1.0
|
||||
* @apioption plotOptions.series.accessibility.enabled
|
||||
*/
|
||||
/**
|
||||
* Provide a description of the series, announced to screen readers.
|
||||
*
|
||||
* @type {string}
|
||||
* @since 7.1.0
|
||||
* @apioption plotOptions.series.accessibility.description
|
||||
*/
|
||||
/**
|
||||
* Expose only the series element to screen readers, not its points.
|
||||
*
|
||||
* @type {boolean}
|
||||
* @since 7.1.0
|
||||
* @apioption plotOptions.series.accessibility.exposeAsGroupOnly
|
||||
*/
|
||||
/**
|
||||
* Point accessibility options for a series.
|
||||
*
|
||||
* @extends accessibility.point
|
||||
* @since 9.3.0
|
||||
* @requires modules/accessibility
|
||||
* @apioption plotOptions.series.accessibility.point
|
||||
*/
|
||||
/**
|
||||
* Formatter function to use instead of the default for point
|
||||
* descriptions. Same as `accessibility.point.descriptionFormatter`, but
|
||||
* applies to a series instead of the whole chart.
|
||||
*
|
||||
* Note: Prefer using [accessibility.point.valueDescriptionFormat](#plotOptions.series.accessibility.point.valueDescriptionFormat)
|
||||
* instead if possible, as default functionality such as describing
|
||||
* annotations will be preserved.
|
||||
*
|
||||
* @see [accessibility.point.valueDescriptionFormat](#plotOptions.series.accessibility.point.valueDescriptionFormat)
|
||||
* @see [point.accessibility.description](#series.line.data.accessibility.description)
|
||||
* @see [accessibility.point.descriptionFormatter](#accessibility.point.descriptionFormatter)
|
||||
*
|
||||
* @type {Highcharts.ScreenReaderFormatterCallbackFunction<Highcharts.Point>}
|
||||
* @since 9.3.0
|
||||
* @apioption plotOptions.series.accessibility.point.descriptionFormatter
|
||||
*/
|
||||
/**
|
||||
* Keyboard navigation for a series
|
||||
*
|
||||
* @declare Highcharts.SeriesAccessibilityKeyboardNavigationOptionsObject
|
||||
* @since 7.1.0
|
||||
* @apioption plotOptions.series.accessibility.keyboardNavigation
|
||||
*/
|
||||
/**
|
||||
* Enable/disable keyboard navigation support for a specific series.
|
||||
*
|
||||
* @type {boolean}
|
||||
* @since 7.1.0
|
||||
* @apioption plotOptions.series.accessibility.keyboardNavigation.enabled
|
||||
*/
|
||||
/**
|
||||
* Accessibility options for an annotation label.
|
||||
*
|
||||
* @declare Highcharts.AnnotationLabelAccessibilityOptionsObject
|
||||
* @since 8.0.1
|
||||
* @requires modules/accessibility
|
||||
* @apioption annotations.labelOptions.accessibility
|
||||
*/
|
||||
/**
|
||||
* Description of an annotation label for screen readers and other assistive
|
||||
* technology.
|
||||
*
|
||||
* @type {string}
|
||||
* @since 8.0.1
|
||||
* @apioption annotations.labelOptions.accessibility.description
|
||||
*/
|
||||
/**
|
||||
* Accessibility options for an axis. Requires the accessibility module.
|
||||
*
|
||||
* @declare Highcharts.AxisAccessibilityOptionsObject
|
||||
* @since 7.1.0
|
||||
* @requires modules/accessibility
|
||||
* @apioption xAxis.accessibility
|
||||
*/
|
||||
/**
|
||||
* Enable axis accessibility features, including axis information in the
|
||||
* screen reader information region. If this is disabled on the xAxis, the
|
||||
* x values are not exposed to screen readers for the individual data points
|
||||
* by default.
|
||||
*
|
||||
* @type {boolean}
|
||||
* @since 7.1.0
|
||||
* @apioption xAxis.accessibility.enabled
|
||||
*/
|
||||
/**
|
||||
* Description for an axis to expose to screen reader users.
|
||||
*
|
||||
* @type {string}
|
||||
* @since 7.1.0
|
||||
* @apioption xAxis.accessibility.description
|
||||
*/
|
||||
/**
|
||||
* Range description for an axis. Overrides the default range description.
|
||||
* Set to empty to disable range description for this axis.
|
||||
*
|
||||
* @type {string}
|
||||
* @since 7.1.0
|
||||
* @apioption xAxis.accessibility.rangeDescription
|
||||
*/
|
||||
/**
|
||||
* @optionparent legend
|
||||
*/
|
||||
legend: {
|
||||
/**
|
||||
* Accessibility options for the legend. Requires the Accessibility
|
||||
* module.
|
||||
*
|
||||
* @since 7.1.0
|
||||
* @requires modules/accessibility
|
||||
*/
|
||||
accessibility: {
|
||||
/**
|
||||
* Enable accessibility support for the legend.
|
||||
*
|
||||
* @since 7.1.0
|
||||
*/
|
||||
enabled: true,
|
||||
/**
|
||||
* Options for keyboard navigation for the legend.
|
||||
*
|
||||
* @since 7.1.0
|
||||
* @requires modules/accessibility
|
||||
*/
|
||||
keyboardNavigation: {
|
||||
/**
|
||||
* Enable keyboard navigation for the legend.
|
||||
*
|
||||
* @see [accessibility.keyboardNavigation](#accessibility.keyboardNavigation.enabled)
|
||||
*
|
||||
* @since 7.1.0
|
||||
*/
|
||||
enabled: true
|
||||
}
|
||||
}
|
||||
},
|
||||
/**
|
||||
* @optionparent exporting
|
||||
*/
|
||||
exporting: {
|
||||
/**
|
||||
* Accessibility options for the exporting menu. Requires the
|
||||
* Accessibility module.
|
||||
*
|
||||
* @since 7.1.0
|
||||
* @requires modules/accessibility
|
||||
*/
|
||||
accessibility: {
|
||||
/**
|
||||
* Enable accessibility support for the export menu.
|
||||
*
|
||||
* @since 7.1.0
|
||||
*/
|
||||
enabled: true
|
||||
}
|
||||
}
|
||||
};
|
||||
export default Options;
|
||||
Reference in New Issue
Block a user