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Add aria-hidden=true attribute to hidden iframe for resizing (#4400)

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Add aria-hidden=true attribute to hidden iframe for resizing. This prevents screen readers in ItemMode from navigating to the hidden iframe.
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Karan Bhatia 2017-06-23 15:14:16 -07:00 committed by Evert Timberg
parent 18707cf81f
commit 2a7df85180
1 changed files with 4 additions and 0 deletions
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4
src/platforms/platform.dom.js
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@ -130,6 +130,10 @@ module.exports = function(Chart) {
// https://github.com/chartjs/Chart.js/issues/3090 // https://github.com/chartjs/Chart.js/issues/3090
iframe.tabIndex = -1; iframe.tabIndex = -1;
// Prevent iframe from gaining focus on ItemMode keyboard navigation
// Accessibility bug fix
iframe.setAttribute('aria-hidden', 'true');
// If the iframe is re-attached to the DOM, the resize listener is removed because the // If the iframe is re-attached to the DOM, the resize listener is removed because the
// content is reloaded, so make sure to install the handler after the iframe is loaded. // content is reloaded, so make sure to install the handler after the iframe is loaded.
// https://github.com/chartjs/Chart.js/issues/3521 // https://github.com/chartjs/Chart.js/issues/3521