[feat] TransformPane - Viewport synchronization layer for Vue nodes (#4304)

Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: Benjamin Lu <benceruleanlu@proton.me>
Co-authored-by: github-actions <github-actions@github.com>

src/composables/widgets/useTreeSelectWidget.ts

@@ -0,0 +1,25 @@
+import type {
+  InputSpec as InputSpecV2,
+  TreeSelectInputSpec
+} from '@/schemas/nodeDef/nodeDefSchemaV2'
+import type { ComfyWidgetConstructorV2 } from '@/scripts/widgets'
+
+import type { LGraphNode } from '../../lib/litegraph/src/litegraph'
+import type { ITreeSelectWidget } from '../../lib/litegraph/src/types/widgets'
+
+export const useTreeSelectWidget = (): ComfyWidgetConstructorV2 => {
+  return (node: LGraphNode, inputSpec: InputSpecV2): ITreeSelectWidget => {
+    const { name, options = {} } = inputSpec as TreeSelectInputSpec
+    const isMultiple = options.multiple || false
+    const defaultValue = isMultiple ? [] : ''
+
+    const widget = node.addWidget('treeselect', name, defaultValue, () => {}, {
+      serialize: true,
+      values: options.values || [],
+      multiple: isMultiple,
+      ...options
+    }) as ITreeSelectWidget
+
+    return widget
+  }
+}