Add popup support to the Menu widget

enaml/qt/qt_menu.py

@@ -6,7 +6,7 @@
 # The full license is in the file COPYING.txt, distributed with this software.
 #------------------------------------------------------------------------------
 from PyQt4.QtCore import Qt
-from PyQt4.QtGui import QMenu
+from PyQt4.QtGui import QMenu, QCursor
 
 from atom.api import Typed
 
@@ -227,3 +227,9 @@ def set_context_menu(self, context):
 
         """
         self.widget.setContextMenu(context)
+
+    def popup(self):
+        """ Popup the menu over the current mouse location.
+
+        """
+        self.widget.exec_(QCursor.pos())

enaml/widgets/menu.py

@@ -33,6 +33,9 @@ def set_visible(self, visible):
     def set_context_menu(self, context):
         raise NotImplementedError
 
+    def popup(self):
+        raise NotImplementedError
+
 
 class Menu(ToolkitObject):
     """ A widget used as a menu in a MenuBar.
@@ -72,3 +75,16 @@ def _update_proxy(self, change):
         """
         # The superclass implementation is sufficient.
         super(Menu, self)._update_proxy(change)
+
+    #--------------------------------------------------------------------------
+    # Utility Methods
+    #--------------------------------------------------------------------------
+    def popup(self):
+        """ Popup the menu over the current mouse location.
+
+        """
+        if not self.is_initialized:
+            self.initialize()
+        if not self.proxy_is_active:
+            self.activate_proxy()
+        self.proxy.popup()

enaml/wx/wx_menu.py

@@ -717,3 +717,12 @@ def set_context_menu(self, context):
 
         """
         self.widget.SetContextMenu(context)
+
+    def popup(self):
+        """ Popup the menu at the current mouse location.
+
+        """
+        # This is not supported on wx. Wx requires the menu to be
+        # popped up over a specified window. It can't be done using
+        # global coordinates.
+        pass

examples/widgets/popup_menu.enaml

@@ -0,0 +1,33 @@
+#------------------------------------------------------------------------------
+# Copyright (c) 2013, Nucleic Development Team.
+#
+# Distributed under the terms of the Modified BSD License.
+#
+# The full license is in the file COPYING.txt, distributed with this software.
+#------------------------------------------------------------------------------
+from enaml.widgets.api import Window, Container, PushButton, Menu, Action
+
+
+enamldef PopupMenu(Menu):
+    Action:
+        text = 'foo'
+        triggered :: print text + ' triggered'
+    Action:
+        text = 'bar'
+        triggered :: print text + ' triggered'
+    Action:
+        text = 'baz'
+        triggered :: print text + ' triggered'
+    Action:
+        text = 'spam'
+        triggered :: print text + ' triggered'
+    Action:
+        text = 'ham'
+        triggered :: print text + ' triggered'
+
+
+enamldef Main(Window):
+    Container:
+        PushButton:
+            text = 'Popup Menu'
+            clicked :: PopupMenu().popup()