Mobile: Add a Rich Text Editor (#12748)

packages/editor/utils/getFileFromPasteEvent.ts

@@ -0,0 +1,23 @@
+const getFileFromPasteEvent = (event: ClipboardEvent|DragEvent) => {
+	const dataTransfer = 'clipboardData' in event ? event.clipboardData : event.dataTransfer;
+	const files = dataTransfer.files;
+
+	let fileToPaste: File|null = null;
+
+	// Prefer image files, if available.
+	for (const file of files) {
+		if (['image/png', 'image/jpeg', 'image/svg+xml'].includes(file.type)) {
+			fileToPaste = file;
+			break;
+		}
+	}
+
+	// Fall back to other files
+	if (files.length && !fileToPaste) {
+		fileToPaste = files[0];
+	}
+
+	return fileToPaste;
+};
+
+export default getFileFromPasteEvent;