[view] improvement: displaying a tooltip with the missing dependencies for a supported packaging technology

bauh/api/abstract/controller.py

@@ -4,7 +4,7 @@ import shutil
 from abc import ABC, abstractmethod
 from enum import Enum
 from pathlib import Path
-from typing import List, Set, Type, Tuple, Optional
+from typing import List, Set, Type, Tuple, Optional, Generator
 
 import yaml
 
@@ -243,9 +243,9 @@ class SoftwareManager(ABC):
         pass
 
     @abstractmethod
-    def can_work(self) -> bool:
+    def can_work(self) -> Tuple[bool, Optional[str]]:
         """
-        :return: if the instance can work based on what is installed in the user's machine.
+        :return: if the instance can work based on what is installed in the user's machine. If not, an optional string as a reason.
         """
 
     def cache_to_disk(self, pkg: SoftwarePackage, icon_bytes: Optional[bytes], only_icon: bool):

bauh/api/abstract/download.py

@@ -1,5 +1,5 @@
 from abc import ABC, abstractmethod
-from typing import Iterable, List, Optional
+from typing import Iterable, List, Optional, Tuple
 
 from bauh.api.abstract.handler import ProcessWatcher
 
@@ -41,3 +41,7 @@ class FileDownloader(ABC):
     @abstractmethod
     def list_available_multithreaded_clients(self) -> List[str]:
         pass
+
+    @abstractmethod
+    def get_supported_clients(self) -> tuple:
+        pass

bauh/api/abstract/view.py

@@ -1,6 +1,6 @@
 from abc import ABC
 from enum import Enum
-from typing import List, Set, Optional
+from typing import List, Set, Optional, Dict
 
 
 class MessageType(Enum):
@@ -46,13 +46,14 @@ class InputOption:
 
     def __init__(self, label: str, value: object, tooltip: Optional[str] = None,
                  icon_path: Optional[str] = None, read_only: bool = False, id_: Optional[str] = None,
-                 invalid: bool = False):
+                 invalid: bool = False, extra_properties: Optional[Dict[str, str]] = None):
         """
         :param label: the string that will be shown to the user
         :param value: the option value (not shown)
         :param tooltip: an optional tooltip
         :param icon_path: an optional icon path
         :param invalid: if this option is considered invalid
+        :param extra_properties: extra properties
         """
         if not label:
             raise Exception("'label' must be a not blank string")
@@ -64,6 +65,7 @@ class InputOption:
         self.icon_path = icon_path
         self.read_only = read_only
         self.invalid = invalid
+        self.extra_properties = extra_properties
 
     def __hash__(self):
         return hash(self.label) + hash(self.value)