The document title bar is no populated on document open

nw/constants/constants.py

@@ -234,6 +234,12 @@ class nwUnicode:
     U_NBSP   = "\u00a0" # Non-breaking space
     U_PARA   = "\u2029" # Paragraph separator
 
+    ## Arrows
+    U_UTRI   = "\u2bc5" # Up-pointing triangle
+    U_DTRI   = "\u2bc6" # Down-pointing triangle
+    U_LTRI   = "\u2bc7" # Left-pointing triangle
+    U_RTRI   = "\u2bc8" # Right-pointing triangle
+
     # HTML Equivalents
 
     ## Quotes
@@ -265,4 +271,10 @@ class nwUnicode:
     ## Other
     H_NBSP   = " "
 
+    ## Arrows
+    H_UTRI   = "⯅"
+    H_DTRI   = "⯆"
+    H_LTRI   = "⯇"
+    H_RTRI   = "⯈"
+
 # END Class nwUnicode

nw/gui/elements/doctitlebar.py

@@ -32,23 +32,28 @@ from PyQt5.QtCore import Qt
 from PyQt5.QtGui import QPalette, QColor
 from PyQt5.QtWidgets import QLabel
 
+from nw.constants import nwUnicode
+
 logger = logging.getLogger(__name__)
 
 class GuiDocTitleBar(QLabel):
 
-    def __init__(self, theParent):
+    def __init__(self, theParent, theProject):
         QLabel.__init__(self, theParent)
 
         logger.debug("Initialising DocTitleBar ...")
 
-        self.mainConf  = nw.CONFIG
-        self.theParent = theParent
-        self.theTheme  = theParent.theTheme
+        self.mainConf   = nw.CONFIG
+        self.theParent  = theParent
+        self.theProject = theProject
+        self.theTheme   = theParent.theTheme
+        self.theHandle  = None
 
-        self.setText("A > B > C")
+        self.setText("")
         self.setContentsMargins(8,2,8,2)
         self.setAutoFillBackground(True)
         self.setAlignment(Qt.AlignCenter)
+        self.setWordWrap(True)
         docPalette = self.palette()
         docPalette.setColor(QPalette.Window, QColor(*self.theTheme.colBack))
         docPalette.setColor(QPalette.Text, QColor(*self.theTheme.colText))
@@ -58,4 +63,32 @@ class GuiDocTitleBar(QLabel):
 
         return
 
+    def setTitleFromHandle(self, tHandle):
+        """Sets the document title from the handle, or alternatively,
+        set the whole document path.
+        """
+
+        self.setText("")
+        self.theHandle = tHandle
+        if tHandle is None:
+            return False
+
+        if True:
+            tTitle = []
+            tTree = self.theProject.getItemPath(tHandle)
+            for aHandle in reversed(tTree):
+                nwItem = self.theProject.getItem(aHandle)
+                if nwItem is not None:
+                    tTitle.append(nwItem.itemName)
+            sSep = " %s " % nwUnicode.U_RTRI
+            self.setText(sSep.join(tTitle))
+        else:
+            nwItem = self.theProject.getItem(tHandle)
+            if nwItem is None:
+                return False
+
+            self.setText(nwItem.itemName)
+
+        return True
+
 # END Class GuiDocTitleBar

nw/guimain.py

@@ -93,8 +93,8 @@ class GuiMain(QMainWindow):
         self.treeView  = GuiDocTree(self, self.theProject)
         self.projView  = GuiProjectOutline(self, self.theProject)
         self.mainMenu  = GuiMainMenu(self, self.theProject)
-        self.viewTitle = GuiDocTitleBar(self)
-        self.editTitle = GuiDocTitleBar(self)
+        self.viewTitle = GuiDocTitleBar(self, self.theProject)
+        self.editTitle = GuiDocTitleBar(self, self.theProject)
 
         # Minor Gui Elements
         self.statusIcons = []
@@ -452,10 +452,13 @@ class GuiMain(QMainWindow):
     ##
 
     def closeDocument(self):
+        """Close the document and clear the editor and title field.
+        """
         if self.hasProject:
             if self.docEditor.docChanged:
                 self.saveDocument()
             self.docEditor.clearEditor()
+            self.editTitle.setTitleFromHandle(None)
         return True
 
     def openDocument(self, tHandle, tLine=None):
@@ -467,6 +470,7 @@ class GuiMain(QMainWindow):
             if self.docEditor.loadText(tHandle, tLine):
                 self.docEditor.setFocus()
                 self.theProject.setLastEdited(tHandle)
+                self.editTitle.setTitleFromHandle(tHandle)
             else:
                 return False
         return True
@@ -477,6 +481,8 @@ class GuiMain(QMainWindow):
         return True
 
     def viewDocument(self, tHandle=None):
+        """Load a document for viewing in the view panel.
+        """
 
         if tHandle is None:
             tHandle = self.treeView.getSelectedHandle()
@@ -494,6 +500,7 @@ class GuiMain(QMainWindow):
         self.tabWidget.setCurrentWidget(self.splitView)
 
         if self.docViewer.loadText(tHandle) and not self.viewPane.isVisible():
+            self.viewTitle.setTitleFromHandle(tHandle)
             bPos = self.splitMain.sizes()
             self.viewPane.setVisible(True)
             vPos = [0,0]

nw/project/project.py

@@ -601,6 +601,9 @@ class NWProject():
     ##
 
     def getItem(self, tHandle):
+        """Return a project item based on its handle. Returns None if
+        the handle doesn't exist in the project.
+        """
         if tHandle in self.projTree:
             return self.projTree[tHandle]
         logger.error("No tree item with handle %s" % str(tHandle))
@@ -626,6 +629,28 @@ class NWProject():
                         return tHandle
         return None
 
+    def getItemPath(self, tHandle):
+        """Iterate upwards in the tree until we find the item with
+        parent None, the root item, and return the list of handles.
+        We do this with a for loop with a maximum depth of 200 to make
+        infinite loops impossible.
+        """
+        tTree = []
+        tItem = self.getItem(tHandle)
+        if tItem is not None:
+            tTree.append(tHandle)
+            for i in range(200):
+                if tItem.parHandle is None:
+                    return tTree
+                else:
+                    tHandle = tItem.parHandle
+                    tItem   = self.getItem(tHandle)
+                    if tItem is None:
+                        return tTree
+                    else:
+                        tTree.append(tHandle)
+        return tTree
+
     def getProjectItems(self):
         """This function is called from the tree view when building the
         tree. Each item in the project is returned in the order saved in