Fixes for a number of reported bugs

manuskript/main.py

@@ -20,6 +20,10 @@
 LOGGER = logging.getLogger(__name__)
 
 def prepare(arguments, tests=False):
+    # Qt WebEngine demands this attribute be set _before_ we create our QApplication object.
+    QApplication.setAttribute(Qt.AA_ShareOpenGLContexts, True)
+
+    # Create the foundation that provides our Qt application with its event loop.
     app = QApplication(sys.argv)
     app.setOrganizationName("manuskript" + ("_tests" if tests else ""))
     app.setOrganizationDomain("www.theologeek.ch")
@@ -160,7 +164,7 @@ def respectSystemDarkThemeSetting():
     QIcon.setThemeSearchPaths(QIcon.themeSearchPaths() + [appPath("icons")])
     QIcon.setThemeName("NumixMsk")
 
-    # Font siue
+    # Font size
     if settings.contains("appFontSize"):
         f = qApp.font()
         f.setPointSize(settings.value("appFontSize", type=int))
@@ -175,12 +179,12 @@ def respectSystemDarkThemeSetting():
     MW._defaultCursorFlashTime = qApp.cursorFlashTime()
 
     # Command line project
-    #if len(sys.argv) > 1 and sys.argv[1][-4:] == ".msk":
     if arguments.filename is not None and arguments.filename[-4:] == ".msk":
-        #TODO: integrate better with argparsing.
-        if os.path.exists(sys.argv[1]):
-            path = os.path.abspath(sys.argv[1])
-            MW._autoLoadProject = path
+        # The file is verified to already exist during argument parsing.
+        # Our ".msk" check has been moved there too for better feedback,
+        # but leaving it here to err on the side of caution.
+        path = os.path.abspath(arguments.filename)
+        MW._autoLoadProject = path
 
     return app, MW
 
@@ -255,14 +259,24 @@ def setup_signal_handlers(MW):
     signal.signal(signal.SIGTERM, sigint_handler("SIGTERM", MW))
 
 
+def is_valid_project(parser, arg):
+    if arg[-4:] != ".msk":
+        parser.error("only manuskript projects (.msk) are supported!")
+    if not os.path.isfile(arg):
+        parser.error("the project %s does not exist!" % arg)
+    else:
+        return arg
+
+
 def process_commandline(argv):
     import argparse
     parser = argparse.ArgumentParser(description="Run the manuskript application.")
     parser.add_argument("--console", help="open the IPython Jupyter QT Console as a debugging aid",
                         action="store_true")
     parser.add_argument("-v", "--verbose", action="count", default=1, help="lower the threshold for messages logged to the terminal")
     parser.add_argument("-L", "--logfile", default=None, help="override the default log file location")
-    parser.add_argument("filename", nargs="?", metavar="FILENAME", help="the manuskript project (.msk) to open")
+    parser.add_argument("filename", nargs="?", metavar="FILENAME", help="the manuskript project (.msk) to open",
+                        type=lambda x: is_valid_project(parser, x))
 
     args = parser.parse_args(args=argv)
 
@@ -283,7 +297,7 @@ def run():
     2. So that prepare can be used in tests, without running the whole thing
     """
     # Parse command-line arguments.
-    arguments = process_commandline(sys.argv)
+    arguments = process_commandline(sys.argv[1:])
     # Initialize logging. (Does not include Qt integration yet.)
     manuskript.logging.setUp(console_level=arguments.verbose)
 

manuskript/models/characterPOVModel.py

@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 # --!-- coding: utf8 --!--
 from PyQt5.QtCore import QModelIndex, QSortFilterProxyModel
-
+from manuskript.enums import Character as C
 
 class characterPOVModel(QSortFilterProxyModel):
 
@@ -14,7 +14,11 @@ def __init__(self, sourceModel, parent=None):
             sourceModel.dataChanged.connect(self.sourceDataChanged)
 
     def filterAcceptsRow(self, sourceRow, sourceParent):
-        return self.sourceModel().pov(sourceRow)
+        # Although I would prefer to reuse the existing characterModel.pov() method,
+        # this is simpler to do, actually works and also more ideomatic Qt code.
+        index = self.sourceModel().index(sourceRow, C.pov.value, sourceParent)
+        value = self.sourceModel().data(index)
+        return bool(value)
 
     def rowToSource(self, row):
         index = self.index(row, 0)

manuskript/models/outlineItem.py

@@ -98,7 +98,7 @@ def __str__(self):
             )
 
     __repr__ = __str__
-    
+
     def charCount(self):
         return self._data.get(self.enum.charCount, 0)
 
@@ -116,6 +116,9 @@ def data(self, column, role=Qt.DisplayRole):
                 return []
 
             else:
+                # Used to verify nbsp characters not getting clobbered.
+                #if column == E.text:
+                #    print("GET", str(role), "-->", str([hex(ord(x)) for x in data]))
                 return data
 
         elif role == Qt.DecorationRole and column == E.title:
@@ -158,6 +161,8 @@ def setData(self, column, data, role=Qt.DisplayRole):
         # Stuff to do before
         if column == E.text:
             self.addRevision()
+            # Used to verify nbsp characters not getting clobbered.
+            #print("SET", str(role), "-->", str([hex(ord(x)) for x in data]))
 
         # Calling base class implementation
         abstractItem.setData(self, column, data, role)

manuskript/ui/views/MDEditView.py

@@ -500,7 +500,10 @@ def getClickRects(self):
                         r3.setLeft(self.viewport().geometry().left())
                         r3.setRight(self.viewport().geometry().right())
                         refs.append(ClickThing(r3, rx, rx.capturedTexts()))
-                        cursor.movePosition(cursor.Down)
+                        if not cursor.movePosition(cursor.Down):
+                            # Super-rare failure. Leaving log message for future investigation.
+                            LOGGER.debug("Failed to move cursor down while calculating clickables. Aborting.")
+                            break
 
         self.clickRects = refs
 

manuskript/ui/views/textEditView.py

@@ -20,7 +20,11 @@
 import logging
 LOGGER = logging.getLogger(__name__)
 
+# See implementation of QTextDocument::toPlainText()
+PLAIN_TRANSLATION_TABLE = {0x2028: "\n", 0x2029: "\n", 0xfdd0: "\n", 0xfdd1: "\n"}
+
 class textEditView(QTextEdit):
+
     def __init__(self, parent=None, index=None, html=None, spellcheck=None,
                  highlighting=False, dict="", autoResize=False):
         QTextEdit.__init__(self, parent)
@@ -278,13 +282,20 @@ def disconnectDocument(self):
     def reconnectDocument(self):
         self.document().contentsChanged.connect(self.updateTimer.start, F.AUC)
 
+    def toIdealText(self):
+        """QTextDocument::toPlainText() replaces NBSP with spaces, which we don't want.
+        QTextDocument::toRawText() replaces nothing, but that leaves fancy paragraph and line separators that users would likely complain about.
+        This reimplements toPlainText(), except without the NBSP destruction."""
+        return self.document().toRawText().translate(PLAIN_TRANSLATION_TABLE)
+    toPlainText = toIdealText
+
     def updateText(self):
         self._updating.lock()
 
         # LOGGER.debug("Updating %s", self.objectName())
         if self._index:
             self.disconnectDocument()
-            if self.toPlainText() != F.toString(self._index.data()):
+            if self.toIdealText() != F.toString(self._index.data()):
                 # LOGGER.debug("    Updating plaintext")
                 self.document().setPlainText(F.toString(self._index.data()))
             self.reconnectDocument()
@@ -319,7 +330,7 @@ def submit(self):
         self.updateTimer.stop()
 
         self._updating.lock()
-        text = self.toPlainText()
+        text = self.toIdealText()
         self._updating.unlock()
 
         # LOGGER.debug("Submitting %s", self.objectName())