105 lines
2.6 KiB
JavaScript
105 lines
2.6 KiB
JavaScript
|
/* *
|
||
|
|
*
|
||
|
|
* (c) 2009-2019 Øystein Moseng
|
||
|
|
*
|
||
|
|
* Accessibility component for chart container.
|
||
|
|
*
|
||
|
|
* License: www.highcharts.com/license
|
||
|
|
*
|
||
|
|
* */
|
||
|
|
|
||
|
|
'use strict';
|
||
|
|
|
||
|
|
import H from '../../../parts/Globals.js';
|
||
|
|
import AccessibilityComponent from '../AccessibilityComponent.js';
|
||
|
|
|
||
|
|
var doc = H.win.document;
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The ContainerComponent class
|
||
|
|
*
|
||
|
|
* @private
|
||
|
|
* @class
|
||
|
|
* @name Highcharts.ContainerComponent
|
||
|
|
* @param {Highcharts.Chart} chart
|
||
|
|
* Chart object
|
||
|
|
*/
|
||
|
|
var ContainerComponent = function (chart) {
|
||
|
|
this.initBase(chart);
|
||
|
|
};
|
||
|
|
ContainerComponent.prototype = new AccessibilityComponent();
|
||
|
|
H.extend(ContainerComponent.prototype, /** @lends Highcharts.ContainerComponent */ { // eslint-disable-line
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Called on first render/updates to the chart, including options changes.
|
||
|
|
*/
|
||
|
|
onChartUpdate: function () {
|
||
|
|
var chart = this.chart,
|
||
|
|
a11yOptions = chart.options.accessibility,
|
||
|
|
titleElement,
|
||
|
|
titleId = 'highcharts-title-' + chart.index,
|
||
|
|
chartTitle = chart.options.title.text || chart.langFormat(
|
||
|
|
'accessibility.defaultChartTitle', { chart: chart }
|
||
|
|
),
|
||
|
|
svgContainerTitle = this.stripTags(chart.langFormat(
|
||
|
|
'accessibility.svgContainerTitle', {
|
||
|
|
chartTitle: chartTitle
|
||
|
|
}
|
||
|
|
)),
|
||
|
|
svgContainerLabel = this.stripTags(chart.langFormat(
|
||
|
|
'accessibility.svgContainerLabel', {
|
||
|
|
chartTitle: chartTitle
|
||
|
|
}
|
||
|
|
));
|
||
|
|
|
||
|
|
// Add SVG title tag if it is set
|
||
|
|
if (svgContainerTitle.length) {
|
||
|
|
titleElement = this.svgTitleElement =
|
||
|
|
this.svgTitleElement || doc.createElementNS(
|
||
|
|
'http://www.w3.org/2000/svg',
|
||
|
|
'title'
|
||
|
|
);
|
||
|
|
titleElement.textContent = svgContainerTitle;
|
||
|
|
titleElement.id = titleId;
|
||
|
|
chart.renderTo.insertBefore(
|
||
|
|
titleElement, chart.renderTo.firstChild
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Add label to SVG container
|
||
|
|
if (chart.renderer.box && svgContainerLabel.length) {
|
||
|
|
chart.renderer.box.setAttribute('aria-label', svgContainerLabel);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Add role and label to the div
|
||
|
|
if (a11yOptions.landmarkVerbosity !== 'disabled') {
|
||
|
|
chart.renderTo.setAttribute('role', 'region');
|
||
|
|
} else {
|
||
|
|
chart.renderTo.removeAttribute('role');
|
||
|
|
}
|
||
|
|
chart.renderTo.setAttribute(
|
||
|
|
'aria-label',
|
||
|
|
chart.langFormat(
|
||
|
|
'accessibility.chartContainerLabel',
|
||
|
|
{
|
||
|
|
title: this.stripTags(chartTitle),
|
||
|
|
chart: chart
|
||
|
|
}
|
||
|
|
)
|
||
|
|
);
|
||
|
|
},
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Accessibility disabled/chart destroyed.
|
||
|
|
*/
|
||
|
|
destroy: function () {
|
||
|
|
this.chart.renderTo.setAttribute('aria-hidden', true);
|
||
|
|
this.destroyBase();
|
||
|
|
}
|
||
|
|
|
||
|
|
});
|
||
|
|
|
||
|
|
export default ContainerComponent;
|