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Hide backend-incompatible block categories on Pyodide #312

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Merged
milanofthe merged 1 commit into from
Jun 2, 2026
Merged

Hide backend-incompatible block categories on Pyodide #312

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9 changes: 9 additions & 0 deletions src/lib/components/panels/NodeLibrary.svelte
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,8 @@
import { onDestroy } from 'svelte';
import { nodeRegistry, blockConfig, registryVersion, type NodeCategory, type NodeTypeDefinition } from '$lib/nodes';
import { NODE_TYPES } from '$lib/constants/nodeTypes';
import { PYODIDE_HIDDEN_CATEGORIES } from '$lib/constants/python';
import { getBackendType } from '$lib/pyodide/backend';
import { createHoverDetail } from '$lib/actions/hoverDetail.svelte';
import NodePreview from '$lib/components/nodes/NodePreview.svelte';
import Icon from '$lib/components/icons/Icon.svelte';
Expand Down Expand Up @@ -71,6 +73,13 @@
void registryTick;
let nodes = nodeRegistry.getAll().filter((node) => node.type !== NODE_TYPES.INTERFACE);

// Hide backend-incompatible categories (e.g. FMI on the Pyodide backend:
// FMU blocks need the native FMI runtime, not available in the browser).
if (getBackendType() === 'pyodide' && PYODIDE_HIDDEN_CATEGORIES.length > 0) {
const hidden = new Set(PYODIDE_HIDDEN_CATEGORIES);
nodes = nodes.filter((node) => !hidden.has(node.category));
}

if (!searchQuery.trim()) return nodes;
const query = searchQuery.toLowerCase();
return nodes.filter(
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16 changes: 16 additions & 0 deletions src/lib/constants/python.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -27,13 +27,29 @@ export const CODE_SECTIONS = {
export const BLOCK_CATEGORY_ORDER: string[] = [
'Sources',
'Dynamic',
'DAE',
'Algebraic',
'Logic',
'Discrete',
'FMI',
'Recording',
'Subsystem'
];

/**
* Block categories hidden when running on the Pyodide (in-browser) backend,
* configurable per distribution via `VITE_PYODIDE_HIDDEN_CATEGORIES`
* (comma-separated). Empty by default. Use this for categories whose blocks
* can't work in the browser sandbox (e.g. FMI/FMU blocks that drive an external
* .fmu through a native runtime) so they're only offered on a native backend.
*/
export const PYODIDE_HIDDEN_CATEGORIES: string[] = (
(import.meta.env.VITE_PYODIDE_HIDDEN_CATEGORIES as string | undefined) ?? ''
)
.split(',')
.map((c) => c.trim())
.filter(Boolean);

/**
* Timeout constants for Pyodide operations (in milliseconds)
*/
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