added info message on context change

pype/maya/__init__.py

@@ -232,3 +232,7 @@ def on_task_changed(*args):
     with maya.suspended_refresh():
         lib.set_context_settings()
         lib.update_content_on_context_change()
+
+    lib.show_message("Context was changed",
+                     ("Context was changed to {}".format(
+                        avalon.Session["AVALON_ASSET"])))

pype/maya/lib.py

@@ -2611,3 +2611,18 @@ def update_content_on_context_change():
                                  new_data["frameEnd"],)
         except ValueError:
             pass
+
+
+def show_message(title, msg):
+    from avalon.vendor.Qt import QtWidgets
+    from ..widgets import message_window
+
+    # Find maya main window
+    top_level_widgets = {w.objectName(): w for w in
+                         QtWidgets.QApplication.topLevelWidgets()}
+
+    parent = top_level_widgets.get("MayaWindow", None)
+    if parent is None:
+        pass
+    else:
+        message_window.message(title=title, message=msg, parent=parent)

pype/widgets/message_window.py

@@ -7,7 +7,7 @@ log = logging.getLogger(__name__)
 
 class Window(QtWidgets.QWidget):
     def __init__(self, parent, title, message, level):
-        super().__init__()
+        super(Window, self).__init__()
         self.parent = parent
         self.title = title
         self.message = message
@@ -48,9 +48,10 @@ class Window(QtWidgets.QWidget):
         return
 
 
-def message(title=None, message=None, level="info"):
-    global app
-    app = QtWidgets.QApplication(sys.argv)
+def message(title=None, message=None, level="info", parent=None):
+    app = parent
+    if not app:
+        app = QtWidgets.QApplication(sys.argv)
     ex = Window(app, title, message, level)
     ex.show()
     # sys.exit(app.exec_())