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import React, { createContext, useContext, useEffect, useState } from 'react';
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import { TagInstanceInfo } from '../api';
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import { Occurrence, Tag } from '../components/models/tag';
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interface IAnnotationContextProvider {
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tags: TagInstanceInfo[] | null;
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setTags: (newTags: TagInstanceInfo[] | null) => void;
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addOccurrence: () => void;
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changeVisibility: (tag: Tag) => void;
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deleteOccurrence: (occurrence: Occurrence) => void;
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changePosition: (occurrence: Occurrence, newValue: number) => void;
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changeLength: (occurrence: Occurrence, newValue: number) => void;
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}
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export const AnnotationContext = createContext<IAnnotationContextProvider>({
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tags: null,
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setTags: (v) => {
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return;
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},
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addOccurrence: () => {
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return;
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},
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changeVisibility: (tag: Tag) => {
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return;
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},
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deleteOccurrence: (occurrence: Occurrence) => {
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return;
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},
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changePosition: (occurrence: Occurrence, newValue: number) => {
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return;
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},
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changeLength: (occurrence: Occurrence, newValue: number) => {
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return;
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},
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});
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const AnnotationProvider = (props: { children: React.ReactNode }) => {
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const [tags, setTags] = useState<TagInstanceInfo[] | null>(null);
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const addOccurrence = () => {};
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const changeVisibility = (tag: Tag) => {};
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const deleteOccurrence = (occurrence: Occurrence) => {};
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const changePosition = (occurrence: Occurrence, newValue: number) => {};
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const changeLength = (occurrence: Occurrence, newValue: number) => {};
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useEffect(() => {
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// on context init
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}, []);
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return (
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<AnnotationContext.Provider
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value={{
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tags,
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setTags,
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addOccurrence,
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changeVisibility,
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deleteOccurrence,
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changeLength,
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changePosition,
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}}
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>
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{props.children}
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</AnnotationContext.Provider>
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);
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};
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export default AnnotationProvider;
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