start collapse

app.tsx

@@ -1,22 +1,27 @@
 import React from "react";
 import * as Iso from "@eno/iso";
+import Collapse from "$/collapse.tsx";
 
 const Comp = React.lazy(()=>import("./deep/component.tsx"));
 
 export default ()=>
 {
     const [countGet, countSet] = React.useState(1);
-    return <div class="p-4 font-sans">
+    return <div class="font-sans flex flex-col items-center min-h-[100vh]">
         <Iso.Meta.Metas title="Main Page!"/>
-        <header class="max-w-4xl mx-auto">
-            <nav class="p-4 flex gap-8 border-b font-black text-sm">
+        <header class="layout-middle border-b">
+            <nav class="flex gap-8 font-black text-sm">
                 <a class="" href="/">Home</a>
                 <a href="/about">About</a>
                 <a href="/details">Details</a>
+                <a href="/data">Data Fetching</a>
             </nav>
+            <Collapse open={false}>
+                <p>Hello!</p>
+            </Collapse>
         </header>
 
-        <main class="max-w-4xl mx-auto p-4">
+        <main class="layout-middle">
         <Iso.Switch>
             <Iso.Case value="/">
                 <>
@@ -38,7 +43,7 @@ export default ()=>
                 </>
             </Iso.Case>
             <Iso.Case value="details">
-                <>
+                <div class="flex flex-col gap-y-2">
                     <h1>Details</h1>
                     <p>
                         Iso uses Preact/Compat and Twind in lieu of React and Tailwind so you can keep the API's you know, serve less kilobytes, and gain new ways to simplify your layout code.
@@ -59,16 +64,29 @@ export default ()=>
                         <li>Use file extensions in import statements</li>
                         <li>Add new modules to the deno.jsonc config</li>
                     </ol>
-                </>
+                </div>
+            </Iso.Case>
+            <Iso.Case value="data">
+                <React.Suspense fallback={<p>Loading...</p>}>
+                    <Comp/>
+                </React.Suspense>
             </Iso.Case>
-            <Iso.Case value="lol/idk">lol/idk</Iso.Case>
             <Iso.Case default><p>404!</p></Iso.Case>
         </Iso.Switch>
         </main>
 
-        <footer>
-            footer
+        <footer class="bg-black grow w-full">
+            <div class="layout-middle mx-auto text-white">
+                &copy; {new Date().getFullYear()} Seth Trowbridge
+            </div>
         </footer>
 
     </div>;
 };
+
+export const CSS = {
+    rules:
+    [
+        ["layout-middle", "w-full max-w-4xl p-4"]
+    ]
+};

components/collapse.tsx

@@ -0,0 +1,87 @@
+import React from "react";
+
+export default (props:{open:boolean, children:React.JSX.Element|React.JSX.Element[]})=>
+{
+  const [openGet, openSet] = React.useState(props.open);
+  const [doneGet, doneSet] = React.useState(true);
+  const refEl:React.RefObject<HTMLElement> = React.useRef(null);
+  const refCollapse:React.RefObject<CollapseControls> = React.useRef(null);
+
+  React.useEffect(()=>
+  {
+    if(refEl.current)
+    {
+      refCollapse.current = Collapser(refEl.current, openGet);
+    }
+    return ()=> refCollapse.current && refCollapse.current();
+  }
+  , []);
+  const Handler =()=>
+  {
+      openSet((old)=>
+      {
+        if(refCollapse.current)
+        {
+          doneSet(false);
+          refCollapse.current(!old, 1000, ()=>doneSet(true));
+        }
+        return !old;
+      });
+  };
+
+  return <div>
+    <button onClick={Handler}>{openGet ? "Close this" : "Open it"}{doneGet ? "." : "..."}</button>
+    <div ref={refEl as React.RefObject<HTMLDivElement>}>
+      {!(!openGet && doneGet) && props.children}
+    </div>
+  </div>
+};
+
+type DoneCallback =(openState:boolean)=>void;
+type CollapseControls =(inOpen?:boolean, inMs?:number, inDone?:DoneCallback)=>void;
+
+export function Collapser(inElement:HTMLElement, initialState = false)
+{
+    let userDone:DoneCallback = (openState) => {};
+    let userMode = initialState;
+    let frameRequest = 0;
+  
+    const done = (inEvent:TransitionEvent)=>
+    {
+      if (inEvent.propertyName == "height" && inEvent.target == inElement)
+      {
+        inEvent.stopPropagation();
+        if (userMode)
+        {
+          inElement.style.height = "auto";
+          inElement.style.overflow = "visible";
+        }
+        userDone(userMode);
+      }
+    };
+    inElement.addEventListener("transitionend", done);
+
+    /** @type Toggler */
+    return function(inOpen?:boolean, inMs?:number, inDone?:DoneCallback)
+    {
+      cancelAnimationFrame(frameRequest);
+
+      if(arguments.length)
+      {
+        userDone = inDone|| ((m)=>{}) as DoneCallback;
+        userMode = inOpen||!userMode;
+        inElement.style.height = inElement.clientHeight + "px";
+        inElement.style.overflow = "hidden";
+        inElement.style.transition = "none";
+        frameRequest = requestAnimationFrame(()=>
+        {
+          inElement.style.height = `${inOpen ? inElement.scrollHeight : 0}px`;
+          inElement.style.transition = `height ${(inMs||1000) / 1000}s`;
+        });
+      }
+      else
+      {
+        inElement.removeEventListener("transitionend", done);
+      }
+    } as CollapseControls;
+}

deep/component.tsx

@@ -9,11 +9,8 @@ export default ()=>
     type CatFact = {fact:string, length:number}|undefined;
     const [Data, Updating] = Iso.Fetch.Use(`https://catfact.ninja/fact`);
 
-
-    console.log("component.tsx render!!")
-
     return <div class="p-4 text-red-500">
-        <Iso.Meta.Metas title="Component!"/>
+        <Iso.Meta.Metas title="Cat Fact!"/>
         Component Route is: {routeGet.Path.toString()}
         <button className="p-4 bg-green-500 text-white" onClick={e=>{countSet(countGet+1); routeSet(["lol", "idk"], {count:countGet+1});}}>{countGet}</button>
         <a href="/page/about-us" className="p-2 text(lg blue-500) font-bold">a link</a>

deno.jsonc

@@ -4,7 +4,8 @@
     {
         "react": "https://esm.sh/stable/preact@10.13.2/compat",
         "@eno/app": "./app.tsx",
-        "@eno/iso": "https://gitea.hptrow.me/SethTrowbridge/eno/raw/tag/0.0.2/lib/iso.tsx/"
+        "@eno/iso": "https://gitea.hptrow.me/SethTrowbridge/eno/raw/tag/0.0.2/lib/iso.tsx/",
+        "$/": "./components/"
     },
     "tasks": {
         "dev": "deno run -A --unstable --no-lock app.tsx --port=3000 --dev",