Add custom message for N/A files

docs/installers.rst

@@ -13,8 +13,11 @@ The ``uri`` key is equivalent to passing only a string to the installer and the
 ``filename`` key will be used to give the local copy another name.
 
 If the game contains copyrighted files that cannot be redistributed, the value
-should be ``N\A``. When the installer encounter this value, it will prompt the
-user for the location of the file.
+should begin with ``N/A``. When the installer encounter this value, it will
+prompt the user for the location of the file. To indicate to the user what file
+to select, append a message to ``N/A`` like this: 
+``N/A:Please select the installer for this game``
+
 
 If the game makes use of (Windows) Steam data, the value should be
 ``$WINESTEAM:appid:path/to/data``. This will check that the data is available
@@ -118,6 +121,22 @@ needed for games that ships in a zip file which does not retain file permissions
 
 Example: ``chmodx: $GAMEDIR/game_binary``
 
+Running a task provided by a runner
+-----------------------------------
+
+Some actions are specific to some runners, you can call them with th ``task`` 
+command. You must at least provide the ``name`` parameter which is the function
+that will be called. Other parameters depend on the task being called.
+
+Currently, the following tasks are implemented:
+
+wine: ``wineexec`` Runs a windows executable. Parameters are ``executable``,
+``args`` (optional arguments passed to the executable), ``prefix`` (optional
+WINEPREFIX).
+
+wine: ``winetricks`` Runs winetricks with the ``app`` argument. ``prefix`` is
+an optional WINEPREFIX path.
+
 
 Calling the installer
 =====================

lutris/installer.py

@@ -191,9 +191,14 @@ class ScriptInterpreter(object):
         # Setup destination path
         dest_file = os.path.join(self.download_cache_path, filename)
 
-        if file_uri == "N/A":
+        if file_uri.startswith("N/A"):
             #Ask the user where is located the file
-            file_uri = self.parent.ask_user_for_file()
+            parts = file_uri.split(":", 1)
+            if len(parts) == 2:
+                message = parts[1]
+            else:
+                message = file_id
+            file_uri = self.parent.ask_user_for_file(message)
             if not file_uri:
                 raise ScriptingError(
                     "Can't continue installation without file", file_id
@@ -599,8 +604,8 @@ class InstallerDialog(Gtk.Dialog):
         button.set_sensitive(False)
         self.interpreter.iter_game_files()
 
-    def ask_user_for_file(self):
-        dlg = FileDialog()
+    def ask_user_for_file(self, message=None):
+        dlg = FileDialog(message)
         filename = getattr(dlg, 'filename', '')
         return filename