| 1 | {"version":3,"names":["React","useEventEmitter","listen","listenRef","useRef","useEffect","current","listeners","Object","create","useCallback","target","removeListener","type","callback","callbacks","undefined","index","indexOf","splice","addListener","push","removed","emit","data","canPreventDefault","items","slice","concat","keys","map","t","filter","cb","i","self","lastIndexOf","event","defineProperty","enumerable","get","defaultPrevented","defineProperties","preventDefault","value","forEach","useMemo"],"sources":["useEventEmitter.tsx"],"sourcesContent":["import * as React from 'react';\n\nimport type { EventArg, EventConsumer, EventEmitter } from './types';\n\nexport type NavigationEventEmitter<T extends Record<string, any>> =\n EventEmitter<T> & {\n create: (target: string) => EventConsumer<T>;\n };\n\ntype Listeners = ((e: any) => void)[];\n\n/**\n * Hook to manage the event system used by the navigator to notify screens of various events.\n */\nexport default function useEventEmitter<T extends Record<string, any>>(\n listen?: (e: any) => void\n): NavigationEventEmitter<T> {\n const listenRef = React.useRef(listen);\n\n React.useEffect(() => {\n listenRef.current = listen;\n });\n\n const listeners = React.useRef<Record<string, Record<string, Listeners>>>(\n Object.create(null)\n );\n\n const create = React.useCallback((target: string) => {\n const removeListener = (type: string, callback: (data: any) => void) => {\n const callbacks = listeners.current[type]\n ? listeners.current[type][target]\n : undefined;\n\n if (!callbacks) {\n return;\n }\n\n const index = callbacks.indexOf(callback);\n\n if (index > -1) {\n callbacks.splice(index, 1);\n }\n };\n\n const addListener = (type: string, callback: (data: any) => void) => {\n listeners.current[type] = listeners.current[type] || {};\n listeners.current[type][target] = listeners.current[type][target] || [];\n listeners.current[type][target].push(callback);\n\n let removed = false;\n return () => {\n // Prevent removing other listeners when unsubscribing same listener multiple times\n if (!removed) {\n removed = true;\n removeListener(type, callback);\n }\n };\n };\n\n return {\n addListener,\n removeListener,\n };\n }, []);\n\n const emit = React.useCallback(\n ({\n type,\n data,\n target,\n canPreventDefault,\n }: {\n type: string;\n data?: any;\n target?: string;\n canPreventDefault?: boolean;\n }) => {\n const items = listeners.current[type] || {};\n\n // Copy the current list of callbacks in case they are mutated during execution\n const callbacks =\n target !== undefined\n ? items[target]?.slice()\n : ([] as Listeners)\n .concat(...Object.keys(items).map((t) => items[t]))\n .filter((cb, i, self) => self.lastIndexOf(cb) === i);\n\n const event: EventArg<any, any, any> = {\n get type() {\n return type;\n },\n };\n\n if (target !== undefined) {\n Object.defineProperty(event, 'target', {\n enumerable: true,\n get() {\n return target;\n },\n });\n }\n\n if (data !== undefined) {\n Object.defineProperty(event, 'data', {\n enumerable: true,\n get() {\n return data;\n },\n });\n }\n\n if (canPreventDefault) {\n let defaultPrevented = false;\n\n Object.defineProperties(event, {\n defaultPrevented: {\n enumerable: true,\n get() {\n return defaultPrevented;\n },\n },\n preventDefault: {\n enumerable: true,\n value() {\n defaultPrevented = true;\n },\n },\n });\n }\n\n listenRef.current?.(event);\n\n callbacks?.forEach((cb) => cb(event));\n\n return event as any;\n },\n []\n );\n\n return React.useMemo(() => ({ create, emit }), [create, emit]);\n}\n"],"mappings":"AAAA,OAAO,KAAKA,KAAZ,MAAuB,OAAvB;;AAWA;AACA;AACA;AACA,eAAe,SAASC,eAAT,CACbC,MADa,EAEc;EAC3B,MAAMC,SAAS,GAAGH,KAAK,CAACI,MAAN,CAAaF,MAAb,CAAlB;EAEAF,KAAK,CAACK,SAAN,CAAgB,MAAM;IACpBF,SAAS,CAACG,OAAV,GAAoBJ,MAApB;EACD,CAFD;EAIA,MAAMK,SAAS,GAAGP,KAAK,CAACI,MAAN,CAChBI,MAAM,CAACC,MAAP,CAAc,IAAd,CADgB,CAAlB;EAIA,MAAMA,MAAM,GAAGT,KAAK,CAACU,WAAN,CAAmBC,MAAD,IAAoB;IACnD,MAAMC,cAAc,GAAG,CAACC,IAAD,EAAeC,QAAf,KAAiD;MACtE,MAAMC,SAAS,GAAGR,SAAS,CAACD,OAAV,CAAkBO,IAAlB,IACdN,SAAS,CAACD,OAAV,CAAkBO,IAAlB,EAAwBF,MAAxB,CADc,GAEdK,SAFJ;;MAIA,IAAI,CAACD,SAAL,EAAgB;QACd;MACD;;MAED,MAAME,KAAK,GAAGF,SAAS,CAACG,OAAV,CAAkBJ,QAAlB,CAAd;;MAEA,IAAIG,KAAK,GAAG,CAAC,CAAb,EAAgB;QACdF,SAAS,CAACI,MAAV,CAAiBF,KAAjB,EAAwB,CAAxB;MACD;IACF,CAdD;;IAgBA,MAAMG,WAAW,GAAG,CAACP,IAAD,EAAeC,QAAf,KAAiD;MACnEP,SAAS,CAACD,OAAV,CAAkBO,IAAlB,IAA0BN,SAAS,CAACD,OAAV,CAAkBO,IAAlB,KAA2B,EAArD;MACAN,SAAS,CAACD,OAAV,CAAkBO,IAAlB,EAAwBF,MAAxB,IAAkCJ,SAAS,CAACD,OAAV,CAAkBO,IAAlB,EAAwBF,MAAxB,KAAmC,EAArE;MACAJ,SAAS,CAACD,OAAV,CAAkBO,IAAlB,EAAwBF,MAAxB,EAAgCU,IAAhC,CAAqCP,QAArC;MAEA,IAAIQ,OAAO,GAAG,KAAd;MACA,OAAO,MAAM;QACX;QACA,IAAI,CAACA,OAAL,EAAc;UACZA,OAAO,GAAG,IAAV;UACAV,cAAc,CAACC,IAAD,EAAOC,QAAP,CAAd;QACD;MACF,CAND;IAOD,CAbD;;IAeA,OAAO;MACLM,WADK;MAELR;IAFK,CAAP;EAID,CApCc,EAoCZ,EApCY,CAAf;EAsCA,MAAMW,IAAI,GAAGvB,KAAK,CAACU,WAAN,CACX,QAUM;IAAA;;IAAA,IAVL;MACCG,IADD;MAECW,IAFD;MAGCb,MAHD;MAICc;IAJD,CAUK;IACJ,MAAMC,KAAK,GAAGnB,SAAS,CAACD,OAAV,CAAkBO,IAAlB,KAA2B,EAAzC,CADI,CAGJ;;IACA,MAAME,SAAS,GACbJ,MAAM,KAAKK,SAAX,oBACIU,KAAK,CAACf,MAAD,CADT,kDACI,cAAegB,KAAf,EADJ,GAEK,EAAD,CACGC,MADH,CACU,GAAGpB,MAAM,CAACqB,IAAP,CAAYH,KAAZ,EAAmBI,GAAnB,CAAwBC,CAAD,IAAOL,KAAK,CAACK,CAAD,CAAnC,CADb,EAEGC,MAFH,CAEU,CAACC,EAAD,EAAKC,CAAL,EAAQC,IAAR,KAAiBA,IAAI,CAACC,WAAL,CAAiBH,EAAjB,MAAyBC,CAFpD,CAHN;IAOA,MAAMG,KAA8B,GAAG;MACrC,IAAIxB,IAAJ,GAAW;QACT,OAAOA,IAAP;MACD;;IAHoC,CAAvC;;IAMA,IAAIF,MAAM,KAAKK,SAAf,EAA0B;MACxBR,MAAM,CAAC8B,cAAP,CAAsBD,KAAtB,EAA6B,QAA7B,EAAuC;QACrCE,UAAU,EAAE,IADyB;;QAErCC,GAAG,GAAG;UACJ,OAAO7B,MAAP;QACD;;MAJoC,CAAvC;IAMD;;IAED,IAAIa,IAAI,KAAKR,SAAb,EAAwB;MACtBR,MAAM,CAAC8B,cAAP,CAAsBD,KAAtB,EAA6B,MAA7B,EAAqC;QACnCE,UAAU,EAAE,IADuB;;QAEnCC,GAAG,GAAG;UACJ,OAAOhB,IAAP;QACD;;MAJkC,CAArC;IAMD;;IAED,IAAIC,iBAAJ,EAAuB;MACrB,IAAIgB,gBAAgB,GAAG,KAAvB;MAEAjC,MAAM,CAACkC,gBAAP,CAAwBL,KAAxB,EAA+B;QAC7BI,gBAAgB,EAAE;UAChBF,UAAU,EAAE,IADI;;UAEhBC,GAAG,GAAG;YACJ,OAAOC,gBAAP;UACD;;QAJe,CADW;QAO7BE,cAAc,EAAE;UACdJ,UAAU,EAAE,IADE;;UAEdK,KAAK,GAAG;YACNH,gBAAgB,GAAG,IAAnB;UACD;;QAJa;MAPa,CAA/B;IAcD;;IAED,sBAAAtC,SAAS,CAACG,OAAV,+EAAAH,SAAS,EAAWkC,KAAX,CAAT;IAEAtB,SAAS,SAAT,IAAAA,SAAS,WAAT,YAAAA,SAAS,CAAE8B,OAAX,CAAoBZ,EAAD,IAAQA,EAAE,CAACI,KAAD,CAA7B;IAEA,OAAOA,KAAP;EACD,CAtEU,EAuEX,EAvEW,CAAb;EA0EA,OAAOrC,KAAK,CAAC8C,OAAN,CAAc,OAAO;IAAErC,MAAF;IAAUc;EAAV,CAAP,CAAd,EAAwC,CAACd,MAAD,EAASc,IAAT,CAAxC,CAAP;AACD"} |