{"version":3,"sources":["../../client/route-announcer.tsx"],"names":["RouteAnnouncer","asPath","routeAnnouncement","setRouteAnnouncement","initialPathLoaded","current","newRouteAnnouncement","pageHeader","document","querySelector","innerText","textContent","title","border","clip","height","margin","overflow","padding","position","width","whiteSpace","wordWrap"],"mappings":"uLAAA,qDACA,gCAEO,QAASA,CAAAA,cAAT,EAA0B,CAC/B,KAAM,CAAEC,MAAF,EAAa,uBAAnB,CACA,KAAM,CAACC,iBAAD,CAAoBC,oBAApB,EAA4C,oBAAS,EAAT,CAAlD,CAEA;AACA,KAAMC,CAAAA,iBAAiB,CAAG,kBAAO,KAAP,CAA1B,CAEA;AACA;AACA;AACA;AACA,qBACE,IAAM,CACJ,GAAI,CAACA,iBAAiB,CAACC,OAAvB,CAAgC,CAC9BD,iBAAiB,CAACC,OAAlB,CAA4B,IAA5B,CACA,OACD,CAED,GAAIC,CAAAA,oBAAJ,CACA,KAAMC,CAAAA,UAAU,CAAGC,QAAQ,CAACC,aAAT,CAAuB,IAAvB,CAAnB,CAEA,GAAIF,UAAJ,CAAgB,CACdD,oBAAoB,CAAGC,UAAU,CAACG,SAAX,EAAwBH,UAAU,CAACI,WAA1D,CACD,CACD,GAAI,CAACL,oBAAL,CAA2B,CACzB,GAAIE,QAAQ,CAACI,KAAb,CAAoB,CAClBN,oBAAoB,CAAGE,QAAQ,CAACI,KAAhC,CACD,CAFD,IAEO,CACLN,oBAAoB,CAAGL,MAAvB,CACD,CACF,CAEDE,oBAAoB,CAACG,oBAAD,CAApB,CACD,CAtBH,CAuBE;AACA,CAACL,MAAD,CAxBF,EA2BA,mBACE,kCACE,YAAU,WAAY;AADxB,CAEE,EAAE,CAAC,0BAFL,CAGE,IAAI,CAAC,OAHP,CAIE,KAAK,CAAE,CACLY,MAAM,CAAE,CADH,CAELC,IAAI,CAAE,eAFD,CAGLC,MAAM,CAAE,KAHH,CAILC,MAAM,CAAE,MAJH,CAKLC,QAAQ,CAAE,QALL,CAMLC,OAAO,CAAE,CANJ,CAOLC,QAAQ,CAAE,UAPL,CAQLC,KAAK,CAAE,KARF,CAUL;AACAC,UAAU,CAAE,QAXP,CAYLC,QAAQ,CAAE,QAZL,CAJT,EAmBGpB,iBAnBH,CADF,CAuBD,C,aAEcF,c","sourcesContent":["import React, { useEffect, useState, useRef } from 'react'\nimport { useRouter } from './router'\n\nexport function RouteAnnouncer() {\n const { asPath } = useRouter()\n const [routeAnnouncement, setRouteAnnouncement] = useState('')\n\n // Only announce the path change, but not for the first load because screen reader will do that automatically.\n const initialPathLoaded = useRef(false)\n\n // Every time the path changes, announce the route change. The announcement will be prioritized by h1, then title\n // (from metadata), and finally if those don't exist, then the pathName that is in the URL. This methodology is\n // inspired by Marcy Sutton's accessible client routing user testing. More information can be found here:\n // https://www.gatsbyjs.com/blog/2019-07-11-user-testing-accessible-client-routing/\n useEffect(\n () => {\n if (!initialPathLoaded.current) {\n initialPathLoaded.current = true\n return\n }\n\n let newRouteAnnouncement\n const pageHeader = document.querySelector('h1')\n\n if (pageHeader) {\n newRouteAnnouncement = pageHeader.innerText || pageHeader.textContent\n }\n if (!newRouteAnnouncement) {\n if (document.title) {\n newRouteAnnouncement = document.title\n } else {\n newRouteAnnouncement = asPath\n }\n }\n\n setRouteAnnouncement(newRouteAnnouncement)\n },\n // TODO: switch to pathname + query object of dynamic route requirements\n [asPath]\n )\n\n return (\n <p\n aria-live=\"assertive\" // Make the announcement immediately.\n id=\"__next-route-announcer__\"\n role=\"alert\"\n style={{\n border: 0,\n clip: 'rect(0 0 0 0)',\n height: '1px',\n margin: '-1px',\n overflow: 'hidden',\n padding: 0,\n position: 'absolute',\n width: '1px',\n\n // https://medium.com/@jessebeach/beware-smushed-off-screen-accessible-text-5952a4c2cbfe\n whiteSpace: 'nowrap',\n wordWrap: 'normal',\n }}\n >\n {routeAnnouncement}\n </p>\n )\n}\n\nexport default RouteAnnouncer\n"]}
