preferences_window.py: Attempts to limit input character length

Tried to create an `NSFormatter` subclass but kept getting this stupid
error:

    TypeError: isPartialStringValid:newEditingString:errorDescription::
    Need tuple of 3 arguments as result

and:

    TypeError:
    isPartialStringValid:proposedSelectedRange:originalString:originalSelectedRange:errorDescription::
    Need tuple of 4 arguments as result

which is freaking idiotic because if you look at the Cocoa documentation
you can see that both those methods return fraking `BOOL`s.

Also needed to keep renaming the subclass because every time I
reinstalled the extension, PyObjC or RoboFont or whatever would yell:

    Traceback (most recent call last):
      File "preferences_window.py", line 10, in <module>
      error: Booya2HotKeyFormatter is overriding existing Objective-C
      class

Anyway, ended up ditching the `NSFormatter` subclass because of that
_stupid_ nonsensical error and am now just checking for string length in
the input edit callback and forcing a max length there by resetting the
value to ensure it doesn't go over 1 character.

1 files changed, 49 insertions, 1 deletions

diff --git a/preferences_window.py b/preferences_window.py
index c7b479b..4a9afa0 100644
--- a/preferences_window.py
+++ b/preferences_window.py
@@ -1,7 +1,47 @@
+from Foundation import NSFormatter
+
 import vanilla
 
 from preferences import Preferences
 
+# from remote_pdb import RemotePdb
+
+
+# class Booya4HotKeyFormatter(NSFormatter):
+#
+#     def __new__(cls, *arg, **kwargs):
+#         self = cls.alloc().init()
+#         return self
+#
+#     def stringForObjectValue_(self, obj):
+#         return str(obj)
+#
+#     def getObjectValue_forString_errorDescription_(self, obj, string, error):
+#         return True
+#
+#     def isPartialStringValid_newEditingString_errorDescription_(
+#             self,
+#             partial_string,
+#             new_string,
+#             error):
+#         if len(partial_string) > 1:
+#             return False
+#
+#         return True
+
+    # def isPartialStringValid_proposedSelectedRange_originalString_originalSelectedRange_errorDescription_(
+    #         self,
+    #         partial_string_ptr,
+    #         proposed_sel_range_ptr,
+    #         orig_string,
+    #         orig_sel_range,
+    #         error):
+    #     if len(partial_string_ptr) > 1:
+    #         return False
+    #
+    #     return True
+
+
 
 class PreferencesWindow(object):
 
@@ -12,14 +52,22 @@ class PreferencesWindow(object):
         self.w.activation_key_label = vanilla.TextBox(
             (10, 15, -10, 22),
             'Short Key:')
+        # RemotePdb('127.0.0.1', 4444).set_trace()
         self.w.activation_key = vanilla.EditText(
             posSize=(82, 12, -10, 25),
             text=self.preferences.activation_key,
+            # formatter=Booya4HotKeyFormatter(),
             callback=self.edit_text_callback)
         self.w.open()
 
     def edit_text_callback(self, sender):
-        self.preferences.activation_key = sender.get()
+        r = sender.get()
+
+        if len(r) > 1:
+            r = r[0]
+
+        self.preferences.activation_key = r
+        self.w.activation_key.set(r)
 
 
 PreferencesWindow()