Files
tono/frontend/src/nodeClipboard.js
2026-03-29 22:51:58 -07:00

334 lines
11 KiB
JavaScript

import { sortNodesForParentOrder } from './nodeHierarchy.js';
export const NODE_CLIPBOARD_KIND = 'tono/node-selection';
export const NODE_CLIPBOARD_MIME = 'application/x-tono-node-selection';
function cloneValue(value) {
if (value == null) return value;
if (typeof structuredClone === 'function') {
try {
return structuredClone(value);
} catch {
// Fall through to JSON clone for simple plain data.
}
}
return JSON.parse(JSON.stringify(value));
}
function clonePlainObject(value) {
if (!value || typeof value !== 'object' || Array.isArray(value)) return {};
return cloneValue(value) || {};
}
function encodeProxyHandleRef(handleId) {
return encodeURIComponent(String(handleId || ''));
}
function decodeProxyHandleRef(encoded) {
try {
return decodeURIComponent(String(encoded || ''));
} catch {
return String(encoded || '');
}
}
function parseGroupProxyHandle(handleId) {
const text = String(handleId || '');
if (!text.startsWith('group-proxy::')) return null;
const parts = text.split('::');
if (parts.length < 5) return null;
return {
direction: parts[1],
nodeId: parts[2],
type: parts[3],
realHandle: decodeProxyHandleRef(parts.slice(4).join('::')),
};
}
function hasOwn(obj, key) {
return Object.prototype.hasOwnProperty.call(obj, key);
}
function remapNodeId(value, idMap) {
if (value == null) return value;
return idMap.get(String(value)) || String(value);
}
function remapGroupProxyHandle(handleId, idMap) {
const proxy = parseGroupProxyHandle(handleId);
if (!proxy) return handleId;
return `group-proxy::${proxy.direction}::${remapNodeId(proxy.nodeId, idMap)}::${proxy.type}::${encodeProxyHandleRef(proxy.realHandle)}`;
}
function remapGroupProxyDescriptors(items, idMap) {
if (!Array.isArray(items)) return items;
return items.map((item) => {
if (!item || typeof item !== 'object') return item;
const nextItem = { ...item };
if (typeof nextItem.key === 'string') {
const separator = nextItem.key.indexOf('::');
if (separator !== -1) {
const handleId = nextItem.key.slice(separator + 2);
nextItem.key = `${remapNodeId(nextItem.key.slice(0, separator), idMap)}::${remapGroupProxyHandle(handleId, idMap)}`;
}
}
if (typeof nextItem.handleId === 'string') {
nextItem.handleId = remapGroupProxyHandle(nextItem.handleId, idMap);
}
return nextItem;
});
}
function remapClipboardExtraData(extraData, idMap) {
const nextExtraData = clonePlainObject(extraData);
if (Array.isArray(nextExtraData.proxyInputs)) {
nextExtraData.proxyInputs = remapGroupProxyDescriptors(nextExtraData.proxyInputs, idMap);
}
if (Array.isArray(nextExtraData.proxyOutputs)) {
nextExtraData.proxyOutputs = remapGroupProxyDescriptors(nextExtraData.proxyOutputs, idMap);
}
return nextExtraData;
}
function remapClipboardEdgeData(data, idMap) {
if (!data || typeof data !== 'object' || Array.isArray(data)) return cloneValue(data);
const nextData = cloneValue(data);
if (hasOwn(nextData, 'groupInternalHiddenBy')) {
nextData.groupInternalHiddenBy = remapNodeId(nextData.groupInternalHiddenBy, idMap);
}
if (hasOwn(nextData, 'groupProxyOwner')) {
nextData.groupProxyOwner = remapNodeId(nextData.groupProxyOwner, idMap);
}
const original = nextData.groupProxyOriginal;
if (original && typeof original === 'object' && !Array.isArray(original)) {
if (hasOwn(original, 'source')) original.source = remapNodeId(original.source, idMap);
if (hasOwn(original, 'target')) original.target = remapNodeId(original.target, idMap);
if (hasOwn(original, 'sourceHandle')) {
original.sourceHandle = remapGroupProxyHandle(original.sourceHandle, idMap);
}
if (hasOwn(original, 'targetHandle')) {
original.targetHandle = remapGroupProxyHandle(original.targetHandle, idMap);
}
}
return nextData;
}
function collectSelectedNodeIds(nodes, nodeIds) {
const selectedIdSet = new Set((Array.isArray(nodeIds) ? nodeIds : []).map((id) => String(id)));
if (selectedIdSet.size === 0) return selectedIdSet;
let changed = true;
while (changed) {
changed = false;
for (const node of Array.isArray(nodes) ? nodes : []) {
const parentId = node?.parentId ? String(node.parentId) : null;
const nodeId = String(node?.id);
if (parentId && selectedIdSet.has(parentId) && !selectedIdSet.has(nodeId)) {
selectedIdSet.add(nodeId);
changed = true;
}
}
}
return selectedIdSet;
}
function extractExtraData(data) {
const source = data || {};
return Object.fromEntries(
Object.entries(source).filter(([key]) => ![
'label',
'className',
'widgetValues',
'runtimeValues',
'definition',
'previewImage',
'tableRows',
'meshData',
'overlay',
'scalarValue',
'processingTimeMs',
'warning',
].includes(key)),
);
}
export function buildNodeClipboardPayloadForIds(
nodes,
edges,
nodeIds,
{ includeIncomingExternalEdges = false } = {},
) {
const selectedIdSet = collectSelectedNodeIds(nodes, nodeIds);
const selectedNodes = Array.isArray(nodes)
? nodes.filter((node) => selectedIdSet.has(String(node.id)))
: [];
if (selectedNodes.length === 0) return null;
const capturedEdges = Array.isArray(edges)
? edges.filter((edge) => (
selectedIdSet.has(String(edge.target))
&& (
selectedIdSet.has(String(edge.source))
|| (includeIncomingExternalEdges && !selectedIdSet.has(String(edge.source)))
)
))
: [];
const snapDim = (v) => {
const n = Math.round(Number(v));
return Number.isFinite(n) && n > 0 ? n : undefined;
};
return {
kind: NODE_CLIPBOARD_KIND,
version: 1,
nodes: selectedNodes.map((node) => {
const width = snapDim(node.measured?.width ?? node.width);
const height = snapDim(node.measured?.height ?? node.height);
return {
id: String(node.id),
type: node.type || 'custom',
position: {
x: Number(node.position?.x) || 0,
y: Number(node.position?.y) || 0,
},
...(width != null ? { width } : {}),
...(height != null ? { height } : {}),
...(node.className ? { className: node.className } : {}),
...(node.parentId ? { parentId: String(node.parentId) } : {}),
...(node.extent ? { extent: node.extent } : {}),
...(node.hidden ? { hidden: true } : {}),
...(node.style ? { style: cloneValue(node.style) } : {}),
dragHandle: node.dragHandle || '.drag-handle',
data: {
label: node.data?.label || node.data?.className || 'Node',
className: node.data?.className || '',
widgetValues: clonePlainObject(node.data?.widgetValues),
runtimeValues: clonePlainObject(node.data?.runtimeValues),
extraData: clonePlainObject(extractExtraData(node.data)),
},
};
}),
edges: capturedEdges.map((edge) => ({
source: String(edge.source),
sourceHandle: edge.sourceHandle,
target: String(edge.target),
targetHandle: edge.targetHandle,
...(edge.style ? { style: { ...edge.style } } : {}),
...(edge.hidden ? { hidden: true } : {}),
...(edge.data ? { data: cloneValue(edge.data) } : {}),
})),
};
}
export function buildNodeClipboardPayload(nodes, edges) {
const selectedNodes = Array.isArray(nodes)
? nodes.filter((node) => node?.selected)
: [];
const selectedIds = selectedNodes.map((node) => String(node.id));
const includeIncomingExternalEdges = selectedNodes.some((node) => node?.data?.className === 'Group');
return buildNodeClipboardPayloadForIds(nodes, edges, selectedIds, { includeIncomingExternalEdges });
}
export function parseNodeClipboardPayload(text) {
if (typeof text !== 'string' || !text.trim()) return null;
try {
const parsed = JSON.parse(text);
if (parsed?.kind !== NODE_CLIPBOARD_KIND) return null;
if (!Array.isArray(parsed.nodes) || !Array.isArray(parsed.edges)) return null;
return parsed;
} catch {
return null;
}
}
export function instantiateNodeClipboardPayload(
payload,
defs = {},
nextNodeId = 1,
offset = { x: 40, y: 40 },
{ keepExternalSources = false } = {},
) {
if (!payload || !Array.isArray(payload.nodes) || payload.nodes.length === 0) {
return { nodes: [], edges: [], nextNodeId };
}
const idMap = new Map();
let currentId = Number(nextNodeId) || 1;
payload.nodes.forEach((node) => {
idMap.set(String(node.id), String(currentId++));
});
const nodes = sortNodesForParentOrder(payload.nodes.map((node) => {
const newId = idMap.get(String(node.id));
const className = node.data?.className || '';
const definition = className ? defs[className] || null : null;
const extraData = remapClipboardExtraData(node.data?.extraData, idMap);
return {
id: newId,
type: node.type || 'custom',
className: node.className,
position: {
x: (Number(node.position?.x) || 0) + (Number(offset?.x) || 0),
y: (Number(node.position?.y) || 0) + (Number(offset?.y) || 0),
},
...(node.width != null ? { width: node.width } : {}),
...(node.height != null ? { height: node.height } : {}),
...(node.parentId ? { parentId: idMap.get(String(node.parentId)) || String(node.parentId) } : {}),
...(node.extent ? { extent: node.extent } : {}),
...(node.hidden ? { hidden: true } : {}),
...(node.style ? { style: cloneValue(node.style) } : {}),
dragHandle: node.dragHandle || '.drag-handle',
selected: true,
data: {
label: node.data?.label || className || 'Node',
className,
widgetValues: clonePlainObject(node.data?.widgetValues),
runtimeValues: clonePlainObject(node.data?.runtimeValues),
...extraData,
definition,
previewImage: null,
tableRows: null,
meshData: null,
overlay: null,
scalarValue: null,
processingTimeMs: null,
warning: null,
},
};
}));
const edges = payload.edges
.filter((edge) => (
idMap.has(String(edge.target))
&& (idMap.has(String(edge.source)) || keepExternalSources)
))
.map((edge, index) => {
const source = idMap.get(String(edge.source)) || String(edge.source);
const target = idMap.get(String(edge.target));
return {
id: `e${source}-${target}-${index}`,
source,
sourceHandle: remapGroupProxyHandle(edge.sourceHandle, idMap),
target,
targetHandle: remapGroupProxyHandle(edge.targetHandle, idMap),
selected: false,
...(edge.style ? { style: { ...edge.style } } : {}),
...(edge.hidden ? { hidden: true } : {}),
...(edge.data ? { data: remapClipboardEdgeData(edge.data, idMap) } : {}),
};
});
return {
nodes,
edges,
nextNodeId: currentId,
};
}