Drag and drop for files in directory, path drag and drop order through to python?

[404Developer]

I have a question about adding drag and drop for user input ordering. I want the user to select a directory and every PDF file from said directory will load into a drag and drop box on the application, based on there ordering when the create PDFs button is clicked an array of the file names will be sent through the QML file to Python so I can know which order the user put it in.

I have this setup with a .qml file and multiple python files which I will link below, I tried multiple things before coming here and none of them really worked. Where I really lack is fully understanding how to link the python and qml file to freely pass information between them. Any help would be great and I thank everyone for there time.

.qml file:

import Qt.labs.platform 1.1
import QtQuick 2.15
import QtQuick.Controls 2.15
import QtQuick.Controls.Material 2.15
import QtQuick.Window 2.15

ApplicationWindow {
    id: window
    width: 800
    height: 500
    visible: true
    title: qsTr("Darwill Roll Tool")
    // Set Flags
    flags: Qt.WindowCloseButtonHint | Qt.WindowMinimizeButtonHint | Qt.CustomizeWindowHint | Qt.MSWindowsFixedSizeDialogHint | Qt.WindowTitleHint
    // Set material Style
    Material.theme: Material.Dark
    Material.accent: Material.LightBlue

    Image {
        id: image

        width: 179
        height: 47
        source: "../imgs/darwill-logo-header-sml_0.png"
        anchors.left: parent.left
        anchors.top: parent.top
        anchors.margins: 30
    }

    Button {
        text: "Browse"
        onClicked: folderDialog.open()
        anchors.right: parent.right
        anchors.top: parent.top
        anchors.rightMargin: 240
        anchors.topMargin: 30
    }

    Button {
        text: "Create PDFs"
        anchors.right: parent.right
        anchors.bottom: parent.bottom
        anchors.margins: 30
        onClicked: {
            backend.foo(comBox.currentText, folderDialog.folder);
        }
    }

    TextField {
        id: pathField
        width: 300
        text: folderDialog.folder
        selectByMouse: true
        placeholderText: qsTr("Path to PDF files")
        readOnly: true
        anchors.right: parent.right
        anchors.top: parent.top
        anchors.rightMargin: 320
        anchors.topMargin: 36
    }

    TextField {
        id: dividerAmount
        width: 90
        selectByMouse: true
        placeholderText: qsTr("Divider Amount")
        anchors.right: parent.right
        anchors.bottom: parent.bottom
        anchors.rightMargin: 120
        anchors.bottomMargin: 30
    }

    Label {
        text: "<strong>V</strong> 1.0"
        anchors.left: parent.left
        anchors.bottom: parent.bottom
        anchors.margins: 10
    }

    Label {
        text: "<strong>Created</strong>: jkuzera@darwill.com"
        anchors.right: parent.right
        anchors.bottom: parent.bottom
        anchors.margins: 10
    }

    ComboBox {
        id: comBox
        width: 200
        model: comModel
        anchors.right: parent.right
        anchors.top: parent.top
        anchors.margins: 30
    }

    FolderDialog {
        id: folderDialog

        folder: StandardPaths.standardLocations(StandardPaths.PicturesLocation)[0]
        onAccepted: {
            console.log("You chose: " + folderDialog.folder);
        }
    }

}

Python file 1 main:

import sys
import os
import Backend1

# Import Modules
from PySide6.QtWidgets import QApplication
from PySide6.QtQml import QQmlApplicationEngine
from PySide6.QtGui import QIcon


# Instance Class
if __name__ == "__main__":
    app = QApplication(sys.argv)
    engine = QQmlApplicationEngine()
    app.setWindowIcon(QIcon("imgs/fav.png"));

    comportComboModel = [
        "Roll Size 1",
        "Roll Size 2",
        "Roll Size  3",
        "Roll Size  4",
        "Roll Size  5",
    ]
    engine.rootContext().setContextProperty("comModel", comportComboModel)
    engine.rootContext().setContextProperty("backend", Backend1.Backend(app))

    engine.load(os.path.join(os.path.dirname(__file__), "qml/main.qml"))

    # Close application
    if not engine.rootObjects():
        sys.exit(-1)
    sys.exit(app.exec())

Python file 3 backend:

from PySide6.QtCore import QObject, Slot, QUrl


class Backend(QObject):
    @Slot(str, QUrl)
    def foo(self, combo, folder):
        self.rollSize = combo
        self.path = folder.toLocalFile()
        print(combo, folder.toLocalFile())
        self.test()
    def test(self):
        print(self.rollSize)
        print(self.path)