How to drop a file into a QTableWidget in PyQt5

Question

I am trying to create a table-widget where I can drop an audio file and populate the table with filename, size of file etc. My code is as follows. I haven't implemented the part for reading the metadata on dragEnterEvent as the table isn't even accepting drops of any kind.

from PyQt5 import QtCore, QtWidgets


class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(982, 615)
        MainWindow.setAcceptDrops(True)
        MainWindow.setStyleSheet("background-color: rgb(255, 255, 255);")
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.label = QtWidgets.QLabel(self.centralwidget)
        self.label.setGeometry(QtCore.QRect(360, 0, 271, 181))
        self.label.setText("")
        self.label.setObjectName("label")
        self.tableWidget = QtWidgets.QTableWidget(self.centralwidget)
        self.tableWidget.setGeometry(QtCore.QRect(10, 200, 701, 331))
        self.tableWidget.setAcceptDrops(True)
        self.tableWidget.setEditTriggers(QtWidgets.QAbstractItemView.NoEditTriggers)
        self.tableWidget.setDragDropMode(QtWidgets.QAbstractItemView.DragDrop)
        self.tableWidget.setDefaultDropAction(QtCore.Qt.CopyAction)
        self.tableWidget.setSelectionBehavior(QtWidgets.QAbstractItemView.SelectRows)
        self.tableWidget.setShowGrid(False)
        self.tableWidget.setSortingEnabled(True)
        self.tableWidget.setObjectName("tableWidget")
        self.tableWidget.horizontalHeader().setVisible(True)
        self.tableWidget.verticalHeader().setVisible(False)
        self.tableWidget.setRowCount(6)
        self.tableWidget.setColumnCount(6)
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 982, 21))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.titleUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def dragEnterEvent(self, event):
        event.accept()

    def dropEvent(self, event):
        event.accept()

    def titleUi(self, MainWindow):
        MainWindow.setWindowTitle("tableWidget")



if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    MainWindow = QtWidgets.QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.show()
    sys.exit(app.exec_())

How can I get the table to accept drops?

Answer 1

Firstly, you should import the file created by pyuic rather than editing it directly, otherwise all your edits will be lost if you make further changes in Qt Designer. (The example code below will show how to do that).

Secondly, you need to ensure that the table accepts drops and that it specifies the kinds of data it can receive. With that in place, you can then listen for drop events and add any dropped files to the table.

Before using the example below, you should re-run pyuic . The example assumes the ui module will saved as mainwindow.py in the same directory. If you want to use a different name, you will need to edit the import line accordingly.

import sys
from PyQt5 import QtCore, QtWidgets
from mainwindow import Ui_MainWindow

class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
    def __init__(self):
        super().__init__()
        self.setupUi(self)
        self.setWindowTitle('TableWidget')
        self.tableWidget.setAcceptDrops(True)
        self.tableWidget.viewport().installEventFilter(self)
        types = ['text/uri-list']
        types.extend(self.tableWidget.mimeTypes())
        self.tableWidget.mimeTypes = lambda: types
        self.tableWidget.setRowCount(0)

    def eventFilter(self, source, event):
        if (event.type() == QtCore.QEvent.Drop and
            event.mimeData().hasUrls()):
            for url in event.mimeData().urls():
                self.addFile(url.toLocalFile())
            return True
        return super().eventFilter(source, event)

    def addFile(self, filepath):
        row = self.tableWidget.rowCount()
        self.tableWidget.insertRow(row)
        item = QtWidgets.QTableWidgetItem(filepath)
        self.tableWidget.setItem(row, 0, item)
        self.tableWidget.resizeColumnToContents(0)

if __name__ == '__main__':

    app = QtWidgets.QApplication(sys.argv)
    window = MainWindow()
    window.show()
    sys.exit(app.exec_())