update dashboard to single image only

dashboard/src/App.css

@@ -26,7 +26,10 @@
 }
 
 .CurrentAst {
+  height: 50vh;
   width: 100vw;
+  object-fit: cover;
+  object-position: right;
 }
 
 .AstInTimeline {

dashboard/src/App.js

 import './App.css';
 import React, { useEffect, useRef } from 'react';
 import './index.css';
-import { VerticalTimeline, VerticalTimelineElement } from 'react-vertical-timeline-component';
 import 'react-vertical-timeline-component/style.min.css';
-import { GiFamilyTree } from "react-icons/gi";
 import { useSelector, useDispatch } from 'react-redux'
-import { addAst, setAstList } from './mgSlice'
+import { setAst, setContext } from './mgSlice'
 
 function App() {
 
   const ws = useRef(null);
   const dispatch = useDispatch();
-  const asts = useSelector(state => state.mg.asts);
+  const ast = useSelector(state => state.mg.ast);
+  const context = useSelector(state => state.mg.context);
 
   useEffect(() => {
     ws.current = new WebSocket("ws://localhost:7070/ast-events");
@@ -20,8 +19,10 @@ function App() {
     ws.current.onmessage = (event) => {
       const json = JSON.parse(event.data);
       try {
-        if ((json.event = "data")) {
-          dispatch(addAst(json));
+        if (json.type === "ast") {
+          dispatch(setAst(json));
+        } else if (json.type === "context") {
+          dispatch(setContext(json));
         }
       } catch (err) {
         console.log(err);
@@ -36,51 +37,47 @@ function App() {
   }, [dispatch]);
 
   useEffect(() => {
-    if (asts.length === 0) {
-      fetch('http://localhost:7070/asts/')
+    if (ast.diagram == null) {
+      console.log("setting ast from WS 1");
+      fetch('http://localhost:7070/ast/')
         .then(res => res.json())
-        .then((asts) => {
-          dispatch(setAstList(asts))
+        .then((ast) => {
+            console.log("setting ast from WS");
+            console.log(ast);
+          dispatch(setAst(ast))
         })
         .catch(console.log)
     }
-  }, [dispatch, asts.length])
+    if (context.diagram == null) {
+      console.log("setting ctx from WS");
+      fetch('http://localhost:7070/context/')
+          .then(res => res.json())
+          .then((context) => {
+            dispatch(setContext(context))
+          })
+          .catch(console.log)
+    } else {
+      console.log(context)
+    }
+  }, [dispatch, ast, context])
 
 
   return (
     <div className="App">
       <header className="App-header">
-        <ControlPanel />
+        <ControlPanel
+          ws={ws}
+        />
       </header>
       <main>
         <CurrentState
-          diagram={asts[0] ? asts[0].diagram : ''}
-          label={asts[0] ? asts[0].parseRule : ''}
+          diagram={context ? context.diagram : ''}
+          label=''
+        />
+        <CurrentState
+            diagram={ast ? ast.diagram : ''}
+            label={ast ? ast.parseRule : ''}
         />
-        <VerticalTimeline
-          className='MG-Timeline'>
-          {asts.map(v => {
-            console.log(v.parseRule)
-            return (
-              <VerticalTimelineElement
-                className="ast-timeline-event"
-                contentStyle={{ background: 'rgb(33, 150, 243)', color: '#fff' }}
-                contentArrowStyle={{ borderRight: '7px solid  rgb(33, 150, 243)' }}
-                date={new Date(v.timestamp).toLocaleTimeString('en-us', { hour12: false })}
-                iconStyle={{ background: 'rgb(33, 150, 243)', color: '#fff', rotate: '180deg' }}
-                icon={<GiFamilyTree />}
-                key={v.timestamp}
-                position={'right'}
-              >
-                <h3 className="vertical-timeline-element-title">{v.parseRule}()</h3>
-                <p>
-                  <img className="AstInTimeline" src={`data:image/svg+xml;utf8,${encodeURIComponent(v.diagram)}`} alt={v.parseRule} />
-                </p>
-              </VerticalTimelineElement>
-
-            )
-          })}
-        </VerticalTimeline>
       </main>
     </div>
   );
@@ -94,14 +91,13 @@ function CurrentState(props) {
   )
 }
 
-class ControlPanel extends React.Component {
-  render() {
+function ControlPanel(props) {
   return (
     <div className='ControlPanel'>
-        <button onClick={() => { alert('You clicked me!'); }}>connect</button>
+      <button onClick={() => { props.ws.current.send("parse") }}>start parsing</button>
+      <button onClick={() => { props.ws.current.send("reset") }}>reset selections</button>
     </div>
-    );
-  }
+  )
 }
 
 export default App;

dashboard/src/mgSlice.js

@@ -3,21 +3,21 @@ import { createSlice } from '@reduxjs/toolkit'
 export const mgSlice = createSlice({
     name: 'mg',
     initialState: {
-    asts: [],
-    contexts: {},
+        ast: {},
+        context: {},
     },
     reducers: {
-    addAst: (state, action) => {
-        state.asts = [action.payload, ...state.asts];
-        console.log("added ast, size is " + state.asts.length);
+        setAst: (state, action) => {
+            state.ast = action.payload;
+            console.log("set AST");
         },
-    setAstList: (state, action) => {
-        state.asts = action.payload.reverse();
-        console.log("set AST list, size is " + state.asts.length);
+        setContext: (state, action) => {
+            state.context = action.payload;
+            console.log("set context");
         }
     }
 })
 
-export const { addAst, setAstList } = mgSlice.actions
+export const {setAst, setContext} = mgSlice.actions
 
 export default mgSlice.reducer
\ No newline at end of file