Pressing Enter to close Start menu in Windows 10 no longer results in…

… NVDA announcing search field text. re #7370. (#7375)

* UIA/Search field: do not announce search field entry when searchui (start menu) is closing. re #7370.

due to use of announceNewlineText, when start menu closes and when Enter is pressed, search field value will be announced, which sometimes leads to side effects such as core freeze. Address this through initOverClass in UIA.SearchField that turns this flag off if and only if we're in start menu in Windows 10.

* SearchField/searchui: an overlay class just for Start menu version that disables announcement of newline text. re #7370.

Reviewed by Mick Curran (NV Access): better to create an overlay class for this just for searchui. This also allows easy modifications in the future if the need arises.

source/appModules/searchui.py

@@ -1,10 +1,16 @@
 #A part of NonVisual Desktop Access (NVDA)
-#Copyright (C) 2015-2016  NV Access Limited
+#Copyright (C) 2015-2017 NV Access Limited, Joseph Lee
 #This file is covered by the GNU General Public License.
 #See the file COPYING for more details.
 
 import appModuleHandler
 from NVDAObjects.IAccessible import IAccessible, ContentGenericClient
+from NVDAObjects.UIA import UIA, SearchField
+
+class StartMenuSearchField(SearchField):
+
+		# #7370: do not announce text when start menu (searchui) closes.
+	announceNewLineText = False
 
 class AppModule(appModuleHandler.AppModule):
 
@@ -16,3 +22,6 @@ def chooseNVDAObjectOverlayClasses(self,obj,clsList):
 				clsList.remove(ContentGenericClient)
 			except ValueError:
 				pass
+		elif isinstance(obj, UIA):
+			if obj.UIAElement.cachedAutomationID == "SearchTextBox":
+				clsList.insert(0, StartMenuSearchField)