import { DataManager , DataManagerOnChangeEvent } from '.' ; export type ManagedComponentProps < T > = T extends ManagedComponent < infer R > ? R : never ; export abstract class ManagedComponent < T extends Record < string , unknown > = any > { private _element : HTMLElement ; public get element ( ) : HTMLElement { return this . _element ; } public set element ( element ) { const changed = this . _element !== element ; this . _element = element ; if ( changed ) this . render ( ) ; } public keys : string [ ] = [ ] ; protected _manager ! : DataManager ; public abstract setProperties ( props ) ; private unregisterManager : ( ) => void = ( ) => undefined ; private registerManager ( ) { this . manager = this . _manager ; } public get manager ( ) : DataManager { return this . _manager ; } public set manager ( manager ) { this . unregisterManager ( ) ; const dataChangeBinded = this . onDataChanged . bind ( this ) ; this . unregisterManager = ( ) => this . _manager ?. removeOnChange ?. ( dataChangeBinded ) ; this . _manager = manager ; this . _manager . addOnChange ( dataChangeBinded ) ; } protected abstract onDataChanged ( e ) ; /** render component on current element, automaticaly called when element changes */ public render ( ) { this . destroy ( ) ; this . registerManager ( ) ; this . destroyed = false ; this . _render ( ) ; } /** Don't call destroy or _destroy in this method! destroy is already called before this method */ protected abstract _render ( ) ; private destroyed = true ; /** clean up after element */ public destroy ( ) { if ( this . destroyed ) return ; this . unregisterManager ( ) ; this . unregisterManager = ( ) => undefined ; this . _destroy ( ) ; this . destroyed = true ; } protected abstract _destroy ( ) ; constructor ( element ) { this . _element = element ; } }