jscharting/dist/modules/accessibility.js

JavaScript charting library

/*
 * modules/accessibility.js v3.4.0.20230215
 * (c) 2009-2023 Corporate Web Solutions Ltd.
 * All client side / JavaScript code may not be used in any way without a valid JSCharting license.
 * License holder usage is governed by the license.txt terms included with the distribution.
 * To license JSCharting for your own use, please visit jscharting.com 
 */
'use strict';(function(l){function g(a,b,c,d){void 0===b&&(b=0);if(!a||null===a.tabIndex||"none"===a.tabIndex||-1===a.tabIndex)return d?null:-1;var e=l.jsLib.isUndefined(a.tabIndex);c=g(c);a=k(a)||e&&a.description?(-1<c?c:0)+b:e?-1:a.tabIndex;return-1<a||!d?a:null}function k(a){return"auto"==a.tabIndex||"auto"==a.tabindex}function n(a,b){b.elGetter(a)&&(b.parentGetter(a).currentOptions.useTabNavigation?p(a,b):m(a,b))}function p(a,b,c){var d=a.chart.currentOptions,e=b.elGetter(a),f=a.currentOptions,
h=f.description||k(f)&&"%name";e.attr({role:h?b.role:null,tabindex:c?-1:g(f,b.tabIndex,d),"aria-label":h?b.tokenizer(a,h):null});r(a,b);b.postSubscriptionApplier&&b.postSubscriptionApplier(a)}function r(a,b){if(!a.vkeyenterHandler){var c=b.elGetter(a),d=b.parentGetter(a);a.vkeyenterHandler=c.on("vkeyenter",function(c){return b.clickFn(a,c)});a.vchangefocusHandler=c.on("vchangefocus",function(c){b.focusFn(a,c);d.focusedItem=c.hasFocus?a:null;!c.hasFocus&&b.isParentNavigatable&&b.isParentNavigatable(d)&&
b.elGetter(a).attr({tabindex:-1})})}}function m(a,b){var c=b.parentGetter(a);if(!c.keysNavigationApplied){var d=b.isParentNavigatable&&b.isParentNavigatable(c);a.activeNavigationItem=!d;t(c,b,d);c.keysNavigationApplied=!0}p(a,b,!a.activeNavigationItem)}function t(a,b,c){function d(a){a=a.keyCode;return a===f.Up||a===f.Right||a===f.Down||a===f.Left}if(!a.keyupDocumentEvent){var e=a.chart.renderer.renderer.documentElement;c&&(a.vchangefocusHandler=b.parentElGetter(a).on("vchangefocus",function(b){a.parentFocused=
b.eventArgs.hasFocus?a:null}));a.keydownDocumentEvent=e.on("keydown",function(b){(a.focusedItem||a.parentFocused)&&d(b)&&b.preventDefault()});a.keyupDocumentEvent=e.on("keyup",function(c){var e=a.parentFocused,h=a.focusedItem;if((h||e)&&d(c)){var g=b.childrenGetter(a),l=g.length;e=e?-1:g.indexOf(h);c=c.keyCode;if(l){if(c===f.Down||c===f.Right)var k=e===l-1?0:e+1;if(c===f.Up||c===f.Left)k=1>e?l-1:e-1;g=g[k];g.activeNavigationItem=!0;h&&(h.activeNavigationItem=!1,m(h,b));m(g,b);b.elGetter(g).el.focus()}}});
var f;(function(a){a[a.Left=37]="Left";a[a.Up=38]="Up";a[a.Right=39]="Right";a[a.Down=40]="Down"})(f||(f={}))}}function u(a){var b=a.currentOptions,c=g(b);(l.jsLib.evalPath(a,"currentOptions.description")||-1<c||k(b))&&a.flowEvents.optionsApplied.on(v)}function v(a){q[a.type]&&q[a.type](a.owner)}var w={isParentNavigatable:function(a){return a.isVisible&&-1<g(a.currentOptions,50,a.chart.currentOptions)},parentGetter:function(a){return a.legend},childrenGetter:function(a){return a.items},elGetter:function(a){return a.trackerElement},
role:"menuitem",tabIndex:55,parentTabIndex:50,parentElGetter:function(a){return a.rootPanel},tokenizer:function(a,b){return a.target.replaceTokens(b)},clickFn:function(a,b){return a.click(b)},focusFn:function(a,b){b.hasFocus?a.mouseover(b):a.mouseout(b)}},x={parentGetter:function(a){return a.series},childrenGetter:function(a){return a._points},elGetter:function(a){return a.visuals.body},role:"presentation",tabIndex:90,tokenizer:function(a,b){return a.replaceTokens(b)},clickFn:function(a,b){return a.series.visualizer.pointClick(b,
a)},focusFn:function(a,b){var c=a.series;b.hasFocus?c.visualizer.pointMouseOver(b,a):c.visualizer.pointMouseOut(b,a)},postSubscriptionApplier:function(a){var b=a.visuals.label;b&&b.attr({"aria-hidden":a.currentOptions.description?"true":null})}},q={chart:function(a){var b=a.currentOptions,c=a.renderer.renderer.root,d=b.description||k(b)&&"%title";c.attr({role:d?"presentation":null,tabindex:g(b,20,b,!0),"aria-label":d?a.replaceTokens(d):null})},chartArea:function(a){var b=a.currentOptions,c=b.description;
a.rootPanel.attr({role:c?"region":null,tabindex:g(b,40,a.chart.currentOptions,!0),"aria-label":c?a.replaceTokens(c):null})},title:function(a){var b=a.target.chart,c=b.currentOptions,d=a.currentOptions,e=d.description||k(d)&&"%title",f=a.rootVisuals.content;a.rootPanel.attr({role:e?"heading":null,tabindex:g(d,30,c,!0),"aria-label":e?b.replaceTokens(e):null});f.attr({"aria-hidden":e?"true":null})},legend:function(a){var b=a.chart,c=b.currentOptions,d=a.currentOptions,e=a.isVisible&&d.description;a.rootPanel.attr({role:e?
"menu":null,tabindex:a.isVisible?g(d,50,c,!0):null,"aria-label":e?b.replaceTokens(e):null});a.rootVisuals.stack.attr({"aria-hidden":e?"true":null})},legendEntry:function(a){n(a,w)},series:function(a){var b=a.chart.currentOptions,c=a.currentOptions,d=c.description||k(c)&&"%name",e=a.rootVisuals.area;e&&e.attr({role:d?"group":null,tabindex:g(c,80,b,!0),"aria-label":d?a.replaceTokens(d):null})},point:function(a){n(a,x)},toolbar:function(a){var b=a.chart.currentOptions,c=b.toolbar;-1<g(b)&&(c.tabIndex=
l.jsLib.def(c.tabIndex)?c.tabIndex:"auto");b=g(c,100,b);a.activateAccessibility(-1<b,b)},axis:function(a){var b=a.chart.currentOptions,c=a.currentOptions,d=c.description,e=a.rootPanel&&a.rootPanel,f=a.rootVisuals&&a.rootVisuals.main;a=a.chartArea&&a.chartArea.replaceTokens?a.chartArea:a.chart;e&&e.attr({role:d?"group":null,tabindex:g(c,60,b,!0),"aria-label":d?a.replaceTokens(d):null});f&&f.attr({"aria-hidden":d?"true":null})},annotation:function(a){var b=a.chart.currentOptions,c=a.currentOptions,
d=c.description,e=a.rootPanel&&a.rootPanel,f=a.rootVisuals&&a.rootVisuals.content;a=a.target||a.chart;e&&e.attr({role:d?"tooltip":null,tabindex:g(c,70,b,!0),"aria-label":d?a.replaceTokens(d):null});f&&f.attr({"aria-hidden":d?"true":null})},uiitem:function(a){var b=a.currentOptions.description,c=a.rootPanel&&a.rootPanel;a=a.target||a.chart;c&&c.attr({role:b?"button":null,"aria-label":b?a.replaceTokens(b):null})},label:function(a){var b=a.chart.currentOptions,c=a.currentOptions,d=c.description,e=a.rootPanel&&
a.rootPanel,f=a.rootVisuals&&a.rootVisuals.text;a=a.chart;e&&e.attr({role:d?"tooltip":null,tabindex:g(c,110,b,!0),"aria-label":d?a.replaceTokens(d):null});f&&f.attr({"aria-hidden":d?"true":null})},grid:function(a){var b=a.currentOptions,c=b.grid;if(c&&!1!==c.enabled){var d=c.description,e=a._grid,f=a._gridSwitch,h=g(c,10,b,!0);if(f){f.attr({role:d?"menu":null,tabindex:d?h:-1,"aria-label":d?a.replaceTokens(d):null});var k=c.buttons||{};l.jsLib.eachKey(k,function(b){var c=k[b]||{};b=f.buttons[b];var d=
c.description;c=c.tabIndex||h+1;b&&b.attr({role:d?"button":null,tabindex:c,"aria-label":d?a.replaceTokens(d):null})})}e&&(c=(b=l.jsLib.evalPath(c,"buttons.export"))&&b.description,d=b&&(b.tabIndex||h+2),e=e.exportButton,b&&e&&e.attr({role:c?"button":null,tabindex:d,"aria-label":c?a.replaceTokens(c):null}))}}};l.moduleLoader.registerModule("modules/accessibility")&&(l.chartInitializers.accessibility=u)})(JSC.internal._modules.accessibility.export);