FreeDatas2HTML/src/SortingField.ts

const { compare }=require('natural-orderby');
const errors=require("./errors.js");
import { SortingFields } from "./interfaces";
import { FreeDatas2HTML } from "./FreeDatas2HTML";

export class SortingField implements SortingFields
{
    _converter: FreeDatas2HTML;
    _fieldsDOMSelector: string; 
    _datasFieldNb: number;
    _order: "asc"|"desc"|undefined=undefined;

    // Injection de la classe principale, mais uniquement si les noms des champs ont été importés et affichés correctement.
    // Attention le numéro de champ concerne les champs effectivement affichés et non ceux issus du parseur.
    constructor(converter: FreeDatas2HTML, datasFieldNb: number, fieldsDOMSelector: string="th")
    {
        if(converter.fields.length === 0)
            throw new Error(errors.sortingFieldNeedDatas);
        else if(! converter.checkField2Rend(datasFieldNb))
            throw new Error(errors.sortingFieldNotFound);
        else
        {
            const  fields=document.querySelectorAll(fieldsDOMSelector);
            if(fields === undefined)
                throw new Error(errors.sortingFieldsNotInHTML);
            else if(fields.length !== converter.realFields2Rend().length)
                throw new Error(errors.sortingFieldsNbFail);
            else
            {
                this._converter=converter;
                this._datasFieldNb=datasFieldNb;
                this._fieldsDOMSelector=fieldsDOMSelector;
            }
        }
    }

    get converter() : FreeDatas2HTML
    {
        return this._converter;
    }
    
    get fieldsDOMSelector() : string
    {
        return this._fieldsDOMSelector;
    }
    
    get datasFieldNb() : number
    {
        return this._datasFieldNb;
    }
    
    get order() : "asc"|"desc"|undefined
    {
        return this._order;
    }
    
    public field2HTML() : void
    {
        const  fields=document.querySelectorAll(this._fieldsDOMSelector);
        let htmlContent=fields[this._datasFieldNb].innerHTML;
        htmlContent="<a href='#freeDatas2HTMLSorting"+this._datasFieldNb+"' id='freeDatas2HTMLSorting"+this._datasFieldNb+"'>"+htmlContent+"</a>";
        fields[this._datasFieldNb].innerHTML=htmlContent;
        const sortingElement=document.getElementById("freeDatas2HTMLSorting"+this._datasFieldNb), field=this;
        sortingElement!.addEventListener("click", function(e) // "!" car je sais que sortingElement existe, puisque je viens de le créer !
        {
            e.preventDefault();
            let order=field._order ;
            if(order === undefined || order === "desc")
                field._order="asc";
            else
                field._order="desc";
            field._converter.datasSortedField=field;
            field._converter.refreshView();
        });
    }
}