able-baker/_lib_/react.tsx

100 lines
2.8 KiB
TypeScript

import * as ReactParts from "react-original";
import { HMR } from "./hmr.tsx";
export type StateType = boolean|number|string|Record<string, string>
export type StateCapture = {state:StateType, set:ReactParts.StateUpdater<StateType>, reload:number};
type FuncArgs = [element:keyof ReactParts.JSX.IntrinsicElements, props:Record<string, string>, children:ReactParts.JSX.Element[]];
const H = ReactParts.createElement;
const MapAt =(inMap:Map<string, StateCapture>, inIndex:number)=>
{
let index = 0;
for(const kvp of inMap)
{
if(index == inIndex)
{
return kvp;
}
index++;
}
return false;
};
const ProxyElement = (props:{__args:FuncArgs})=>
{
const id = ReactParts.useId();
const [stateGet, stateSet] = ReactParts.useState(0);
ReactParts.useEffect(()=>HMR.onChange(id, ()=>stateSet(stateGet+1)));
const child = H(...props.__args);
if(HMR.wireframe)
{
return H("div", {style:{padding:"10px", border:"2px solid red"}},
H("p", null, stateGet),
child
);
}
else
{
return child;
}
};
const ProxyCreate =(...args:FuncArgs)=>
{
return typeof args[0] != "string" ? H(ProxyElement, {__args:args, ...args[1]}) : H(...args);
};
const ProxyState =(arg:StateType)=>
{
const id = ReactParts.useId();
const trueArg = arg;
// does statesOld have an entry for this state? use that instead of the passed arg
const check = MapAt(HMR.statesOld, HMR.statesNew.size);
if(check)
{
arg = check[1].state;
console.info(`BOOTING with ${arg}`);
}
const lastKnowReloads = HMR.reloads;
const [stateGet, stateSet] = ReactParts.useState(arg);
ReactParts.useEffect(()=>{
return ()=>{
if(HMR.reloads == lastKnowReloads)
{
// this is a switch/ui change, not a HMR reload change
const oldState = MapAt(HMR.statesOld, HMR.statesNew.size-1);
oldState && HMR.statesOld.set(oldState[0], {...oldState[1], state:trueArg});
console.log("check: ui-invoked")
}
else
{
console.log("check: hmr-invoked")
}
HMR.statesNew.delete(id);
}
}, []);
if(!HMR.statesNew.has(id))
{
HMR.statesNew.set(id, {state:arg, set:stateSet, reload:HMR.reloads});
}
function proxySetter (arg:StateType)
{
//console.log("state spy update", id, arg);
HMR.statesNew.set(id, {state:arg, set:stateSet, reload:HMR.reloads});
return stateSet(arg);
}
return [stateGet, proxySetter];
};
export * from "react-original";
export {ProxyCreate as createElement, ProxyState as useState };
export const isProxy = true;
export default {...ReactParts, createElement:ProxyCreate, useState:ProxyState, isProxy:true};