Add formatter helper for file extensions filters (#1693)

novelwriter/common.py

@@ -41,7 +41,7 @@ from PyQt5.QtCore import QCoreApplication, QUrl
 
 from novelwriter.enum import nwItemClass, nwItemType, nwItemLayout
 from novelwriter.error import logException
-from novelwriter.constants import nwConst, nwUnicode
+from novelwriter.constants import nwConst, nwLabels, nwUnicode, trConst
 
 if TYPE_CHECKING:  # pragma: no cover
     from typing import TypeGuard  # Requires Python 3.10
@@ -248,6 +248,19 @@ def formatVersion(value: str) -> str:
     return value.lower().replace("a", " Alpha ").replace("b", " Beta ").replace("rc", " RC ")
 
 
+def formatFileFilter(extensions: list[str | tuple[str, str]]) -> str:
+    """Format a list of extensions, or extension + label pairs into a
+    QFileDialog extensions filter.
+    """
+    result = []
+    for ext in extensions:
+        if isinstance(ext, str):
+            result.append(f"{trConst(nwLabels.FILE_FILTERS.get(ext))} ({ext})")
+        elif isinstance(ext, tuple) and len(ext) == 2:
+            result.append(f"{ext[0]} ({ext[1]})")
+    return ";;".join(result)
+
+
 ##
 #  String Functions
 ##

novelwriter/constants.py

@@ -270,6 +270,12 @@ class nwLabels:
         nwBuildFmt.J_HTML: ".json",
         nwBuildFmt.J_NWD:  ".json",
     }
+    FILE_FILTERS = {
+        "*.txt": QT_TRANSLATE_NOOP("Constant", "Text files"),
+        "*.md":  QT_TRANSLATE_NOOP("Constant", "Markdown files"),
+        "*.nwd": QT_TRANSLATE_NOOP("Constant", "novelWriter files"),
+        "*":     QT_TRANSLATE_NOOP("Constant", "All files"),
+    }
     UNIT_NAME = {
         "mm": QT_TRANSLATE_NOOP("Constant", "Millimetres"),
         "cm": QT_TRANSLATE_NOOP("Constant", "Centimetres"),

novelwriter/dialogs/wordlist.py

@@ -36,6 +36,7 @@ from PyQt5.QtWidgets import (
 )
 
 from novelwriter import CONFIG, SHARED
+from novelwriter.common import formatFileFilter
 from novelwriter.core.spellcheck import UserDictionary
 from novelwriter.extensions.configlayout import NColourLabel
 
@@ -184,12 +185,9 @@ class GuiWordList(QDialog):
         SHARED.info(self.tr(
             "Note: The import file must be a plain text file with UTF-8 or ASCII encoding."
         ))
-        extFilter = [
-            "{0} (*.txt)".format(self.tr("Text files")),
-            "{0} (*)".format(self.tr("All files")),
-        ]
+        ffilter = formatFileFilter(["*.txt", "*"])
         path, _ = QFileDialog.getOpenFileName(
-            self, self.tr("Import File"), str(Path.home()), filter=";;".join(extFilter)
+            self, self.tr("Import File"), str(Path.home()), filter=ffilter
         )
         if path:
             try:

novelwriter/guimain.py

@@ -63,7 +63,7 @@ from novelwriter.tools.writingstats import GuiWritingStats
 from novelwriter.enum import (
     nwDocAction, nwDocInsert, nwDocMode, nwItemType, nwWidget, nwView
 )
-from novelwriter.common import hexToInt
+from novelwriter.common import formatFileFilter, hexToInt
 
 logger = logging.getLogger(__name__)
 
@@ -664,14 +664,9 @@ class GuiMain(QMainWindow):
             return False
 
         lastPath = CONFIG.lastPath()
-        extFilter = [
-            "{0} (*.txt)".format(self.tr("Text files")),
-            "{0} (*.md)".format(self.tr("Markdown files")),
-            "{0} (*.nwd)".format(self.tr("novelWriter files")),
-            "{0} (*)".format(self.tr("All files")),
-        ]
+        ffilter = formatFileFilter(["*.txt", "*.md", "*.nwd", "*"])
         loadFile, _ = QFileDialog.getOpenFileName(
-            self, self.tr("Import File"), str(lastPath), filter=";;".join(extFilter)
+            self, self.tr("Import File"), str(lastPath), filter=ffilter
         )
         if not loadFile:
             return False

novelwriter/shared.py

@@ -32,6 +32,7 @@ from pathlib import Path
 
 from PyQt5.QtCore import QObject, QRunnable, QThreadPool, pyqtSignal
 from PyQt5.QtWidgets import QFileDialog, QMessageBox, QWidget
+from novelwriter.common import formatFileFilter
 
 from novelwriter.constants import nwFiles
 from novelwriter.core.spellcheck import NWSpellEnchant
@@ -221,13 +222,12 @@ class SharedData(QObject):
     def getProjectPath(self, parent: QWidget, path: str | Path | None = None,
                        allowZip: bool = False) -> Path | None:
         """Open the file dialog and select a novelWriter project file."""
-        label = (self.tr("novelWriter Project File or Zip")
+        label = (self.tr("novelWriter Project File or Zip File")
                  if allowZip else self.tr("novelWriter Project File"))
         ext = f"{nwFiles.PROJ_FILE} *.zip" if allowZip else nwFiles.PROJ_FILE
+        ffilter = formatFileFilter([(label, ext), "*"])
         selected, _ = QFileDialog.getOpenFileName(
-            parent, self.tr("Open Project"), str(path or ""), filter=";;".join(
-                [f"{label} ({ext})", "{0} (*)".format(self.tr("All Files"))]
-            )
+            parent, self.tr("Open Project"), str(path or ""), filter=ffilter
         )
         return Path(selected) if selected else None
 

novelwriter/tools/dictionaries.py

@@ -37,7 +37,7 @@ from PyQt5.QtWidgets import (
 
 from novelwriter import CONFIG, SHARED
 from novelwriter.error import formatException
-from novelwriter.common import openExternalPath, formatInt, getFileSize
+from novelwriter.common import formatFileFilter, openExternalPath, formatInt, getFileSize
 
 logger = logging.getLogger(__name__)
 
@@ -180,12 +180,11 @@ class GuiDictionaries(QDialog):
     @pyqtSlot()
     def _doBrowseHunspell(self):
         """Browse for a Free/Libre Office dictionary."""
-        extFilter = [
-            self.tr("Free or Libre Office extension ({0})").format("*.sox *.oxt"),
-            self.tr("All files ({0})").format("*"),
-        ]
+        ffilter = formatFileFilter([
+            (self.tr("Free or Libre Office extension"), "*.sox *.oxt"), "*"
+        ])
         soxFile, _ = QFileDialog.getOpenFileName(
-            self, self.tr("Browse Files"), "", filter=";;".join(extFilter)
+            self, self.tr("Browse Files"), "", filter=ffilter
         )
         if soxFile:
             path = Path(soxFile).absolute()

novelwriter/tools/writingstats.py

@@ -381,7 +381,7 @@ class GuiWritingStats(QDialog):
         # Generate the file name
         savePath = CONFIG.lastPath() / f"sessionStats.{fileExt}"
         savePath, _ = QFileDialog.getSaveFileName(
-            self, self.tr("Save Data As"), str(savePath), "%s (*.%s)" % (textFmt, fileExt)
+            self, self.tr("Save Data As"), str(savePath), f"{textFmt} (*.{fileExt})"
         )
         if not savePath:
             return False

tests/test_base/test_base_common.py

@@ -34,11 +34,11 @@ from PyQt5.QtCore import QUrl
 
 from novelwriter.common import (
     checkBool, checkFloat, checkInt, checkIntTuple, checkPath, checkString,
-    checkStringNone, checkUuid, formatInt, formatTime, formatTimeStamp,
-    formatVersion, fuzzyTime, getFileSize, hexToInt, isHandle, isItemClass,
-    isItemLayout, isItemType, isTitleTag, jsonEncode, makeFileNameSafe, minmax,
-    numberToRoman, NWConfigParser, openExternalPath, readTextFile, simplified,
-    transferCase, xmlIndent, yesNo
+    checkStringNone, checkUuid, formatFileFilter, formatInt, formatTime,
+    formatTimeStamp, formatVersion, fuzzyTime, getFileSize, hexToInt, isHandle,
+    isItemClass, isItemLayout, isItemType, isTitleTag, jsonEncode,
+    makeFileNameSafe, minmax, numberToRoman, NWConfigParser, openExternalPath,
+    readTextFile, simplified, transferCase, xmlIndent, yesNo
 )
 
 
@@ -346,6 +346,18 @@ def testBaseCommon_formatVersion():
 # END Test testBaseCommon_formatVersion
 
 
+@pytest.mark.base
+def testBaseCommon_formatFileFilter():
+    """Test the formatFileFilter function."""
+    assert formatFileFilter(["*.txt"]) == "Text files (*.txt)"
+    assert formatFileFilter(["*.txt", "*"]) == "Text files (*.txt);;All files (*)"
+    assert formatFileFilter([("Stuff", "*.stuff"), "*.txt", "*"]) == (
+        "Stuff (*.stuff);;Text files (*.txt);;All files (*)"
+    )
+
+# END Test testBaseCommon_formatFileFilter
+
+
 @pytest.mark.base
 def testBaseCommon_simplified():
     """Test the simplified function."""