Use an enum for switching focus instead of hard coded numbers

nw/constants/__init__.py

@@ -6,7 +6,7 @@ from nw.constants.constants import (
 )
 from nw.constants.enum import (
     nwAlert, nwDocAction, nwItemClass, nwItemLayout, nwItemType, nwOutline,
-    nwDocInsert
+    nwDocInsert, nwWidget
 )
 
 __all__ = [
@@ -28,4 +28,5 @@ __all__ = [
     "nwItemType",
     "nwOutline",
     "nwDocInsert",
+    "nwWidget",
 ]

nw/constants/enum.py

@@ -112,6 +112,15 @@ class nwAlert(Enum):
 
 # END Enum nwAlert
 
+class nwWidget(Enum):
+
+    TREE    = 1
+    EDITOR  = 2
+    VIEWER  = 3
+    OUTLINE = 4
+
+# END Enum nwWidget
+
 class nwOutline(Enum):
 
     TITLE  = 0

nw/gui/mainmenu.py

@@ -33,7 +33,7 @@ from PyQt5.QtWidgets import QMenuBar, QAction
 
 from nw.constants import (
     nwItemType, nwItemClass, nwDocAction, nwDocInsert, nwKeyWords, nwLabels,
-    nwUnicode
+    nwUnicode, nwWidget
 )
 
 logger = logging.getLogger(__name__)
@@ -469,28 +469,28 @@ class GuiMainMenu(QMenuBar):
         self.aFocusTree = QAction("Focus Project Tree", self)
         self.aFocusTree.setStatusTip("Move focus to project tree")
         self.aFocusTree.setShortcut("Alt+1")
-        self.aFocusTree.triggered.connect(lambda: self.theParent.switchFocus(1))
+        self.aFocusTree.triggered.connect(lambda: self.theParent.switchFocus(nwWidget.TREE))
         self.viewMenu.addAction(self.aFocusTree)
 
         # View > Document Pane 1
         self.aFocusEditor = QAction("Focus Document Editor", self)
         self.aFocusEditor.setStatusTip("Move focus to left document pane")
         self.aFocusEditor.setShortcut("Alt+2")
-        self.aFocusEditor.triggered.connect(lambda: self.theParent.switchFocus(2))
+        self.aFocusEditor.triggered.connect(lambda: self.theParent.switchFocus(nwWidget.EDITOR))
         self.viewMenu.addAction(self.aFocusEditor)
 
         # View > Document Pane 2
         self.aFocusView = QAction("Focus Document Viewer", self)
         self.aFocusView.setStatusTip("Move focus to right document pane")
         self.aFocusView.setShortcut("Alt+3")
-        self.aFocusView.triggered.connect(lambda: self.theParent.switchFocus(3))
+        self.aFocusView.triggered.connect(lambda: self.theParent.switchFocus(nwWidget.VIEWER))
         self.viewMenu.addAction(self.aFocusView)
 
         # View > Outline
         self.aFocusOutline = QAction("Focus Outline", self)
         self.aFocusOutline.setStatusTip("Move focus to outline")
         self.aFocusOutline.setShortcut("Alt+4")
-        self.aFocusOutline.triggered.connect(lambda: self.theParent.switchFocus(4))
+        self.aFocusOutline.triggered.connect(lambda: self.theParent.switchFocus(nwWidget.OUTLINE))
         self.viewMenu.addAction(self.aFocusOutline)
 
         # View > Separator

nw/guimain.py

@@ -46,7 +46,7 @@ from nw.gui import (
     GuiProjectTree, GuiProjectWizard, GuiTheme, GuiWordList, GuiWritingStats
 )
 from nw.core import NWProject, NWDoc, NWIndex
-from nw.constants import nwItemType, nwItemClass, nwAlert, nwLists
+from nw.constants import nwItemType, nwItemClass, nwAlert, nwLists, nwWidget
 from nw.common import getGuiItem, hexToInt
 
 logger = logging.getLogger(__name__)
@@ -810,7 +810,7 @@ class GuiMain(QMainWindow):
         if tHandle is None:
             if self.docEditor.anyFocus() or self.isFocusMode:
                 tHandle = self.docEditor.theHandle
-            elif self.treeView.hasFocus():
+            else:
                 tHandle = self.treeView.getSelectedHandle()
 
         if tHandle is None:
@@ -1180,15 +1180,15 @@ class GuiMain(QMainWindow):
     def switchFocus(self, paneNo):
         """Switch focus between main GUI views.
         """
-        if paneNo == 1:
+        if paneNo == nwWidget.TREE:
             self.treeView.setFocus()
-        elif paneNo == 2:
+        elif paneNo == nwWidget.EDITOR:
             self.mainTabs.setCurrentWidget(self.splitDocs)
             self.docEditor.setFocus()
-        elif paneNo == 3:
+        elif paneNo == nwWidget.VIEWER:
             self.mainTabs.setCurrentWidget(self.splitDocs)
             self.docViewer.setFocus()
-        elif paneNo == 4:
+        elif paneNo == nwWidget.OUTLINE:
             self.mainTabs.setCurrentWidget(self.splitOutline)
             self.projView.setFocus()
         return
@@ -1225,7 +1225,7 @@ class GuiMain(QMainWindow):
         if self.isFocusMode:
             logger.debug("Activating Focus Mode")
             self.mainTabs.setCurrentWidget(self.splitDocs)
-            self.switchFocus(2)
+            self.switchFocus(nwWidget.EDITOR)
         else:
             logger.debug("Deactivating Focus Mode")