How to make QFileDialog return a directory or a filename in one method



  • Hi,

    Just got into a problem wherein I need to select a file or a directory using QFileDialog. There are existing static methods like getExistingDirectory() and getOpenFileName(), however, they work separately. How can I make QFileDialog support both behaviors in one method?

    Thanks!


  • Lifetime Qt Champion

    Hi,

    AFAIK, you can't do that without hacking Qt's sources yourself. Building the dialog yourself would not help since there's no mode (see setFileMode) that correspond to what you need.


  • Moderators

    This is an unusual thing to do.
    What's your usecase for that, because I don't think it would be intuitive for a user. Maybe something else would be better here?



  • I'm creating an IDE for a work "stuff" (let's call is stuff).
    In here, a project can be a file or a folder [the usecase].

    I made a simple workaround using pyside:
    @#!/usr/bin/env python
    from PySide import QtCore, QtGui

    class FileDialog(QtGui.QFileDialog):

    def __init__(self, *args):
        super(FileDialog, self).__init__(*args)
        self._selected = ""
        self.currentChanged.connect(self._onCurrentChanged)
    
    @QtCore.Slot(unicode)
    def _onCurrentChanged(self, path):
        # path becomes empty when file is selected
        # triggered twice
        if path:
            self._selected = path
        self.selectFile(path)
    
    def accept(self):
        self.done(1)
        super(FileDialog, self).accept()
    
    def getSelected(self):
        return self._selected
    
    @staticmethod
    def getFileOrDirectory(parent):
        dialog = FileDialog(parent)
        result = dialog.exec_()
        if result:
            return dialog.getSelected()
        return ""
    

    @

    Could you pls verify it?
    Maybe, I'll try to rewrite in C++ later.

    Thanks



  • I had to do something very similar recently. The user could choose either a directory or a single file (importing maps into a situational awareness application). Some maps (OSM tiles for example) are most easily imported by choosing the directory they are in. Others (GeoTIFFs), by picking the map file.

    I didn't want to have separate "Import GeoTIFF", "Import OSM tiles", "Import ADRG", "Import CADRG", etc commands.

    I used a TreeView with a QFileSystemModel.


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