[Refactor] Move node composables to subfolder (#2712)

src/composables/node/useNodePaste.ts

@@ -0,0 +1,31 @@
+import type { LGraphNode } from '@comfyorg/litegraph'
+
+type PasteHandler<T> = (files: File[]) => Promise<T>
+
+interface NodePasteOptions<T> {
+  onPaste: PasteHandler<T>
+  fileFilter?: (file: File) => boolean
+  allow_batch?: boolean
+}
+
+/**
+ * Adds paste handling to a node
+ */
+export const useNodePaste = <T>(
+  node: LGraphNode,
+  options: NodePasteOptions<T>
+) => {
+  const { onPaste, fileFilter = () => true, allow_batch = false } = options
+
+  node.pasteFiles = function (files: File[]) {
+    const filteredFiles = Array.from(files).filter(fileFilter)
+    if (!filteredFiles.length) return false
+
+    const paste = allow_batch ? filteredFiles : filteredFiles.slice(0, 1)
+
+    onPaste(paste).then((result) => {
+      if (!result) return
+    })
+    return true
+  }
+}