arch:using axel to pre-download source file | info window handling list attributes better

bauh/api/abstract/download.py

@@ -0,0 +1,21 @@
+from abc import ABC, abstractmethod
+
+from bauh.api.abstract.handler import ProcessWatcher
+
+
+class FileDownloader(ABC):
+
+    @abstractmethod
+    def download(self, file_url: str, watcher: ProcessWatcher, output_path: str, cwd: str) -> bool:
+        """
+        :param file_url:
+        :param watcher:
+        :param output_path: the downloaded file output path. Leave None for the current directory and the same file name
+        :param cwd: current working directory. Leave None if does not matter.
+        :return: success / failure
+        """
+        pass
+
+    @abstractmethod
+    def is_multithreaded(self) -> bool:
+        pass