Partially hook up backend to visualization.

main.py

@@ -7,27 +7,24 @@ class Position(pydantic.BaseModel):
     x: float
     y: float
 
+class WorkspaceNodeData(pydantic.BaseModel):
+    title: str
+    params: dict
+
 class WorkspaceNode(pydantic.BaseModel):
     id: str
-    title: str
     type: str
+    data: WorkspaceNodeData
     position: Position
 
-class WorkspaceConnection(pydantic.BaseModel):
+class WorkspaceEdge(pydantic.BaseModel):
     id: str
-    # Baklava.js calls it "from", but that's a reserved keyword in Python.
-    src: str = pydantic.Field(None, alias='from')
-    dst: str = pydantic.Field(None, alias='to')
-
-class WorkspaceGraph(pydantic.BaseModel):
-    nodes: list[WorkspaceNode]
-    connections: list[WorkspaceConnection]
-    panning: Position
-    scaling: float
-    nodes: list[WorkspaceNode]
+    source: str
+    target: str
 
 class Workspace(pydantic.BaseModel):
-    graph: WorkspaceGraph
+    nodes: list[WorkspaceNode]
+    edges: list[WorkspaceEdge]
 
 
 app = fastapi.FastAPI()
@@ -46,5 +43,5 @@ def read_item(item_id: int, q: Union[str, None] = None):
 @app.post("/api/save")
 def save(ws: Workspace):
     print(ws)
-    G = nx.scale_free_graph(100)
+    G = nx.scale_free_graph(4)
     return {"graph": list(nx.to_edgelist(G))}

web/package-lock.json

@@ -8,9 +8,11 @@
       "name": "vite-svelte-flow-template",
       "version": "0.0.0",
       "dependencies": {
-        "@xyflow/svelte": "^0.0.40",
+        "@xyflow/svelte": "^0.0.39",
         "fuse.js": "^7.0.0",
         "graphology": "^0.25.4",
+        "graphology-library": "^0.8.0",
+        "lodash": "^4.17.21",
         "sigma": "^3.0.0-beta.17"
       },
       "devDependencies": {
@@ -482,9 +484,9 @@
       }
     },
     "node_modules/@rollup/rollup-android-arm-eabi": {
-      "version": "4.14.0",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-android-arm-eabi/-/rollup-android-arm-eabi-4.14.0.tgz",
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+      "version": "4.14.3",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-android-arm-eabi/-/rollup-android-arm-eabi-4.14.3.tgz",
+      "integrity": "sha512-X9alQ3XM6I9IlSlmC8ddAvMSyG1WuHk5oUnXGw+yUBs3BFoTizmG1La/Gr8fVJvDWAq+zlYTZ9DBgrlKRVY06g==",
       "cpu": [
         "arm"
       ],
@@ -495,9 +497,9 @@
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     },
     "node_modules/@rollup/rollup-android-arm64": {
-      "version": "4.14.0",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-android-arm64/-/rollup-android-arm64-4.14.0.tgz",
-      "integrity": "sha512-fI9nduZhCccjzlsA/OuAwtFGWocxA4gqXGTLvOyiF8d+8o0fZUeSztixkYjcGq1fGZY3Tkq4yRvHPFxU+jdZ9Q==",
+      "version": "4.14.3",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-android-arm64/-/rollup-android-arm64-4.14.3.tgz",
+      "integrity": "sha512-eQK5JIi+POhFpzk+LnjKIy4Ks+pwJ+NXmPxOCSvOKSNRPONzKuUvWE+P9JxGZVxrtzm6BAYMaL50FFuPe0oWMQ==",
       "cpu": [
         "arm64"
       ],
@@ -508,9 +510,9 @@
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     },
     "node_modules/@rollup/rollup-darwin-arm64": {
-      "version": "4.14.0",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-darwin-arm64/-/rollup-darwin-arm64-4.14.0.tgz",
-      "integrity": "sha512-BcnSPRM76/cD2gQC+rQNGBN6GStBs2pl/FpweW8JYuz5J/IEa0Fr4AtrPv766DB/6b2MZ/AfSIOSGw3nEIP8SA==",
+      "version": "4.14.3",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-darwin-arm64/-/rollup-darwin-arm64-4.14.3.tgz",
+      "integrity": "sha512-Od4vE6f6CTT53yM1jgcLqNfItTsLt5zE46fdPaEmeFHvPs5SjZYlLpHrSiHEKR1+HdRfxuzXHjDOIxQyC3ptBA==",
       "cpu": [
         "arm64"
       ],
@@ -521,9 +523,9 @@
       ]
     },
     "node_modules/@rollup/rollup-darwin-x64": {
-      "version": "4.14.0",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-darwin-x64/-/rollup-darwin-x64-4.14.0.tgz",
-      "integrity": "sha512-LDyFB9GRolGN7XI6955aFeI3wCdCUszFWumWU0deHA8VpR3nWRrjG6GtGjBrQxQKFevnUTHKCfPR4IvrW3kCgQ==",
+      "version": "4.14.3",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-darwin-x64/-/rollup-darwin-x64-4.14.3.tgz",
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       "cpu": [
         "x64"
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@@ -534,9 +536,22 @@
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+      "version": "4.14.3",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm-gnueabihf/-/rollup-linux-arm-gnueabihf-4.14.3.tgz",
+      "integrity": "sha512-ge2DC7tHRHa3caVEoSbPRJpq7azhG+xYsd6u2MEnJ6XzPSzQsTKyXvh6iWjXRf7Rt9ykIUWHtl0Uz3T6yXPpKw==",
+      "cpu": [
+        "arm"
+      ],
+      "dev": true,
+      "optional": true,
+      "os": [
+        "linux"
+      ]
+    },
+    "node_modules/@rollup/rollup-linux-arm-musleabihf": {
+      "version": "4.14.3",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm-musleabihf/-/rollup-linux-arm-musleabihf-4.14.3.tgz",
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         "arm"
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@@ -547,9 +562,9 @@
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-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm64-gnu/-/rollup-linux-arm64-gnu-4.14.0.tgz",
-      "integrity": "sha512-x+uJ6MAYRlHGe9wi4HQjxpaKHPM3d3JjqqCkeC5gpnnI6OWovLdXTpfa8trjxPLnWKyBsSi5kne+146GAxFt4A==",
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+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm64-gnu/-/rollup-linux-arm64-gnu-4.14.3.tgz",
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       "cpu": [
         "arm64"
       ],
@@ -560,9 +575,9 @@
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     },
     "node_modules/@rollup/rollup-linux-arm64-musl": {
-      "version": "4.14.0",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm64-musl/-/rollup-linux-arm64-musl-4.14.0.tgz",
-      "integrity": "sha512-nrRw8ZTQKg6+Lttwqo6a2VxR9tOroa2m91XbdQ2sUUzHoedXlsyvY1fN4xWdqz8PKmf4orDwejxXHjh7YBGUCA==",
+      "version": "4.14.3",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm64-musl/-/rollup-linux-arm64-musl-4.14.3.tgz",
+      "integrity": "sha512-UrBoMLCq4E92/LCqlh+blpqMz5h1tJttPIniwUgOFJyjWI1qrtrDhhpHPuFxULlUmjFHfloWdixtDhSxJt5iKw==",
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         "arm64"
       ],
@@ -573,11 +588,11 @@
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     "node_modules/@rollup/rollup-linux-powerpc64le-gnu": {
-      "version": "4.14.0",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-powerpc64le-gnu/-/rollup-linux-powerpc64le-gnu-4.14.0.tgz",
-      "integrity": "sha512-xV0d5jDb4aFu84XKr+lcUJ9y3qpIWhttO3Qev97z8DKLXR62LC3cXT/bMZXrjLF9X+P5oSmJTzAhqwUbY96PnA==",
+      "version": "4.14.3",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-powerpc64le-gnu/-/rollup-linux-powerpc64le-gnu-4.14.3.tgz",
+      "integrity": "sha512-5aRjvsS8q1nWN8AoRfrq5+9IflC3P1leMoy4r2WjXyFqf3qcqsxRCfxtZIV58tCxd+Yv7WELPcO9mY9aeQyAmw==",
       "cpu": [
-        "ppc64le"
+        "ppc64"
       ],
       "dev": true,
       "optional": true,
@@ -586,9 +601,9 @@
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     "node_modules/@rollup/rollup-linux-riscv64-gnu": {
-      "version": "4.14.0",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-riscv64-gnu/-/rollup-linux-riscv64-gnu-4.14.0.tgz",
-      "integrity": "sha512-SDDhBQwZX6LPRoPYjAZWyL27LbcBo7WdBFWJi5PI9RPCzU8ijzkQn7tt8NXiXRiFMJCVpkuMkBf4OxSxVMizAw==",
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+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-riscv64-gnu/-/rollup-linux-riscv64-gnu-4.14.3.tgz",
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@@ -599,9 +614,9 @@
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-      "integrity": "sha512-RxB/qez8zIDshNJDufYlTT0ZTVut5eCpAZ3bdXDU9yTxBzui3KhbGjROK2OYTTor7alM7XBhssgoO3CZ0XD3qA==",
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+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-s390x-gnu/-/rollup-linux-s390x-gnu-4.14.3.tgz",
+      "integrity": "sha512-jOO/PEaDitOmY9TgkxF/TQIjXySQe5KVYB57H/8LRP/ux0ZoO8cSHCX17asMSv3ruwslXW/TLBcxyaUzGRHcqg==",
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         "s390x"
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@@ -612,9 +627,9 @@
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-      "integrity": "sha512-C6y6z2eCNCfhZxT9u+jAM2Fup89ZjiG5pIzZIDycs1IwESviLxwkQcFRGLjnDrP+PT+v5i4YFvlcfAs+LnreXg==",
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+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-x64-gnu/-/rollup-linux-x64-gnu-4.14.3.tgz",
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@@ -625,9 +640,9 @@
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-      "version": "4.14.0",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-x64-musl/-/rollup-linux-x64-musl-4.14.0.tgz",
-      "integrity": "sha512-i0QwbHYfnOMYsBEyjxcwGu5SMIi9sImDVjDg087hpzXqhBSosxkE7gyIYFHgfFl4mr7RrXksIBZ4DoLoP4FhJg==",
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+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-x64-musl/-/rollup-linux-x64-musl-4.14.3.tgz",
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@@ -638,9 +653,9 @@
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+      "resolved": "https://registry.npmjs.org/@rollup/rollup-win32-arm64-msvc/-/rollup-win32-arm64-msvc-4.14.3.tgz",
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@@ -651,9 +666,9 @@
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@@ -664,9 +679,9 @@
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         "kleur": "^4.1.5",
-        "magic-string": "^0.30.5",
-        "svelte-hmr": "^0.15.3",
+        "magic-string": "^0.30.9",
+        "svelte-hmr": "^0.16.0",
         "vitefu": "^0.2.5"
       },
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@@ -704,9 +719,9 @@
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-        "@xyflow/system": "0.0.21",
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@@ -978,9 +1001,9 @@
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@@ -991,6 +1014,11 @@
         "d3-zoom": "^3.0.0"
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+    "node_modules/@yomguithereal/helpers": {
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@@ -3599,6 +4194,11 @@
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
       "integrity": "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ=="
+    },
+    "xml-writer": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/xml-writer/-/xml-writer-1.7.0.tgz",
+      "integrity": "sha512-elFVMRiV5jb59fbc87zzVa0C01QLBEWP909mRuWqFqrYC5wNTH5QW4AaKMNv7d6zAsuOulkD7wnztZNLQW0Nfg=="
     }
   }
 }

web/package.json

@@ -19,9 +19,11 @@
     "vite": "^5.2.8"
   },
   "dependencies": {
-    "@xyflow/svelte": "^0.0.40",
+    "@xyflow/svelte": "^0.0.39",
     "fuse.js": "^7.0.0",
     "graphology": "^0.25.4",
+    "graphology-library": "^0.8.0",
+    "lodash": "^4.17.21",
     "sigma": "^3.0.0-beta.17"
   }
 }

web/src/LynxKiteFlow.svelte

@@ -1,5 +1,5 @@
 <script lang="ts">
-  import { writable } from 'svelte/store';
+  import { writable, derived } from 'svelte/store';
   import {
     SvelteFlow,
     Controls,
@@ -18,6 +18,7 @@
   import '@xyflow/svelte/dist/style.css';
 
   const { screenToFlowPosition } = useSvelteFlow();
+
   const nodeTypes: NodeTypes = {
     basic: NodeWithParams,
     graphviz: NodeWithGraphVisualization,
@@ -129,7 +130,32 @@
     },
   ];
 
-  let nodeSearchPos: XYPosition | undefined = undefined
+  let nodeSearchPos: XYPosition | undefined = undefined;
+
+  const graph = derived([nodes, edges], ([nodes, edges]) => ({ nodes, edges }));
+  let backendWorkspace;
+  graph.subscribe(async (g) => {
+    const dragging = g.nodes.find((n) => n.dragging);
+    if (dragging) return;
+    g = JSON.parse(JSON.stringify(g));
+    for (const node of g.nodes) {
+      delete node.computed;
+    }
+    const ws = JSON.stringify(g);
+    if (ws === backendWorkspace) return;
+    backendWorkspace = ws;
+    const res = await fetch('/api/save', {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      body: JSON.stringify(g),
+    });
+    const j = await res.json();
+    g.nodes[2].data.graph = j.graph;
+    backendWorkspace = JSON.stringify(g);
+    nodes.set(g.nodes);
+  });
 </script>
 
 <div style:height="100vh">

web/src/LynxKiteNode.svelte

@@ -1,9 +1,9 @@
 <script lang="ts">
-  import { Handle, type NodeProps, useSvelteFlow } from '@xyflow/svelte';
+  import { Handle, type NodeProps } from '@xyflow/svelte';
 
   type $$Props = NodeProps;
 
-  export let id: $$Props['id'];
+  export let id: $$Props['id']; id;
   export let data: $$Props['data'];
   export let dragHandle: $$Props['dragHandle'] = undefined; dragHandle;
   export let type: $$Props['type']  = undefined; type;
@@ -18,8 +18,6 @@
   export let positionAbsoluteX: $$Props['positionAbsoluteX'] = undefined; positionAbsoluteX;
   export let positionAbsoluteY: $$Props['positionAbsoluteY'] = undefined; positionAbsoluteY;
 
-  const { updateNodeData } = useSvelteFlow();
-
   let expanded = true;
   function titleClicked() {
     expanded = !expanded;

web/src/NodeWithGraphVisualization.svelte

@@ -1,8 +1,9 @@
 <script lang="ts">
   import { onMount } from 'svelte';
-  import { Handle, type NodeProps, useSvelteFlow } from '@xyflow/svelte';
+  import { type NodeProps } from '@xyflow/svelte';
   import Sigma from 'sigma';
   import * as graphology from 'graphology';
+  import * as graphologyLibrary from 'graphology-library';
   import LynxKiteNode from './LynxKiteNode.svelte';
   type $$Props = NodeProps;
   export let id: $$Props['id'];
@@ -10,10 +11,31 @@
   let sigmaCanvas: HTMLElement;
   let sigmaInstance: Sigma;
 
-  const graph = new graphology.Graph();
-  graph.addNode("1", { label: "Node 1", x: 0, y: 0, size: 10, color: "blue" });
-  graph.addNode("2", { label: "Node 2", x: 1, y: 1, size: 20, color: "red" });
-  graph.addEdge("1", "2", { size: 5, color: "purple" });
+  const graph = graphology.Graph.from({
+    attributes: {
+      name: 'My Graph'
+    },
+    options: {
+      allowSelfLoops: true,
+      multi: false,
+      type: 'mixed'
+    },
+    nodes: [
+      {key: 'Thomas'},
+      {key: 'Eric'}
+    ],
+    edges: [
+      {
+        key: 'T->E',
+        source: 'Thomas',
+        target: 'Eric',
+      }
+    ]
+  });
+  graphologyLibrary.layout.random.assign(graph);
+  const settings = graphologyLibrary.layoutForceAtlas2.inferSettings(graph);
+  graphologyLibrary.layoutForceAtlas2.assign(graph, { iterations: 10, settings });
+  graphologyLibrary.layoutNoverlap.assign(graph, { settings: { ratio: 3 } });
 
   onMount(async () => {
     sigmaInstance = new Sigma(graph, sigmaCanvas);

web/src/NodeWithParams.svelte

@@ -1,5 +1,5 @@
 <script lang="ts">
-  import { Handle, type NodeProps, useSvelteFlow } from '@xyflow/svelte';
+  import { type NodeProps, useSvelteFlow } from '@xyflow/svelte';
   import LynxKiteNode from './LynxKiteNode.svelte';
   type $$Props = NodeProps;
   export let id: $$Props['id'];

web/vite.config.ts

@@ -4,4 +4,7 @@ import { svelte } from '@sveltejs/vite-plugin-svelte'
 // https://vitejs.dev/config/
 export default defineConfig({
   plugins: [svelte()],
+  server: {
+    proxy: { '/api': 'http://127.0.0.1:8000' },
+  },
 })