react-gantt-timeline/src/lib/helpers/registry/Registry.js

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class Registry{
    constructor(){
        this.data={}
        this.link={}
    }

    registerData(list){
        if (!list)
            return;
        this.data={}
        for (let i=0;i<list.length;i++){
            this.data[list[i].id]={item:list[i],index:i};
        }
    }
    registerLinks(list){
        if(!list)
            return
        this.link={}
        let start=0;
        let end=0;

        for (let i=0;i<list.length;i++){
            start=list[i].start;
            end=list[i].end;
            let value={link:list[i],index:i}
            this.createAddTo(start,this.link,value,i)
            this.createAddTo(end,this.link,value,i)
        }
    }
    createAddTo(id,list,value,index){
        if (!list[id])
            list[id]=[]
        if (list[id].indexOf(value)==-1)
            list[id].push(value)
    }

    getTask(id){
        return this.data[id]
    }
    getLinks(id){
        return this.link[id]
    }

}
const instanceRegistry=new Registry();
export default instanceRegistry;