code release

xlib/python/EventListener.py

@@ -0,0 +1,24 @@
+from collections import Iterable
+
+
+class EventListener:
+    __slots__ = ['_funcs']
+    def __init__(self):
+        self._funcs = []
+
+    def has_listeners(self):
+        return len(self._funcs) != 0
+
+    def add(self, func_or_list):
+        if isinstance(func_or_list, Iterable):
+            func_or_list = tuple(func_or_list)
+        else:
+            func_or_list = (func_or_list,)
+
+        for func in func_or_list:
+            if func not in self._funcs:
+                self._funcs.append(func)
+
+    def call(self, *args, **kwargs):
+        for func in self._funcs:
+            func(*args, **kwargs)

xlib/python/__init__.py

@@ -0,0 +1,42 @@
+class dotdict(dict):
+    """dot.notation access to dictionary attributes"""
+    __getattr__ = dict.get
+    __setattr__ = dict.__setitem__
+    __delattr__ = dict.__delitem__
+
+from .EventListener import EventListener
+
+def all_is_not_None(*args): return all(x is not None for x in args)
+def all_is_None(*args): return all(x is None for x in args)
+
+class Disposable:
+    def __del__(self):
+        self.dispose()
+
+    def _on_dispose(self):
+        pass
+
+
+    def dispose(self):
+        _disposed = getattr(self, '_disposed', False)
+        if not _disposed:
+            self._disposed = True
+            self._on_dispose()
+
+def repeat_call(obj, func_name, args_list):
+    """
+
+    """
+    func = getattr(obj, func_name)
+    for args in args_list:
+        if not isinstance(args, list):
+            args = [args]
+        func(*args)
+
+def repeat_objs_call(obj_list, func_name, *args, **kwargs):
+    """
+
+    """
+    for obj in obj_list:
+        func = getattr(obj, func_name)
+        func(*args, **kwargs)