fattureCCSR: added logging dialog to show action status

Signed-off-by: Ettore Dreucci <ettore.dreucci@gmail.com>

exc.py

@@ -1,7 +1,42 @@
 """Define Python user-defined exceptions"""
 
-class Error(Exception):
+class FattureSanRossoreError(Exception):
     """Base class for other exceptions"""
 
-class WrongFileExtension(Error):
+
+class FileError(FattureSanRossoreError):
+    """Basic exception for errors raised by files"""
+    def __init__(self, file_path, msg=None):
+        if msg is None:
+            msg = "An error occurred with file %s" % file_path
+        super(FileError, self).__init__(msg)
+        self.file_path = file_path
+
+class NoFileExtensionError(FileError):
+    """Raised when a file has no exception"""
+    def __init__(self, file_path):
+        super(NoFileExtensionError, self).__init__(file_path, msg="File %s has no extension!" % file_path)
+class WrongFileExtensionError(FileError):
     """Raised when a file extension is not accepted"""
+    def __init__(self, file_path, file_ext, allowed_ext):
+        super(WrongFileExtensionError, self).__init__(file_path, msg="Cannot accept file %s extension %s. Allowed extensions are %s" % (file_path, file_ext, allowed_ext))
+        self.file_ext = file_ext
+
+class NoFileError(FileError):
+    """Raised when file_path is None or an empty string"""
+    def __init__(self):
+        super(NoFileError, self).__init__(None, msg="Not setted or empty file path!")
+
+
+class ActionError(FattureSanRossoreError):
+    """Basic exception for errors raised by actions"""
+    def __init__(self, action, msg=None):
+        if msg is None:
+            msg = "An error occurred with %s action" % action
+        super(ActionError, self).__init__(msg)
+        self.action = action
+
+class InvalidActionError(ActionError):
+    """Raised when an invalid action is used"""
+    def __init__(self, action):
+        super(InvalidActionError, self).__init__(action, "Invalid action %s" % action)