Restructured repository

sbapp/kivymd/tools/patterns/MVC/libs/translation.py

@@ -0,0 +1,49 @@
+import gettext
+
+from kivy.lang import Observable
+
+
+class Translation(Observable):
+    """Original source - https://github.com/tito/kivy-gettext-example."""
+
+    observers = []
+
+    def __init__(self, defaultlang, domian, resource_dir):
+        super().__init__()
+        self.ugettext = None
+        self.lang = defaultlang
+        self.domian = domian
+        self.resource_dir = resource_dir
+        self.switch_lang(self.lang)
+
+    def _(self, text):
+        return self.ugettext(text)
+
+    def fbind(self, name, func, args, **kwargs):
+        if name == "_":
+            self.observers.append((func, args, kwargs))
+        else:
+            return super().fbind(name, func, *args, **kwargs)
+
+    def funbind(self, name, func, args, **kwargs):
+        if name == "_":
+            key = (func, args, kwargs)
+            if key in self.observers:
+                self.observers.remove(key)
+        else:
+            return super().funbind(name, func, *args, **kwargs)
+
+    def switch_lang(self, lang):
+        locales = gettext.translation(
+            self.domian, self.resource_dir, languages=[lang]
+        )
+        try:
+            self.ugettext = locales.ugettext
+        except AttributeError:
+            self.ugettext = locales.gettext
+
+        for func, largs, kwargs in self.observers:
+            try:
+                func(largs, None, None)
+            except ReferenceError:
+                pass