FileDialog.qml

import QtQuick 2.10
import QtQuick.Controls 2.3
import Qt.labs.platform 1.0 as Labs
import de.skycoder42.QtMvvm.Core 1.0
import de.skycoder42.QtMvvm.Quick 1.0

Labs.FileDialog {
    id: _fileDialog

    property var msgConfig
    property MessageResult msgResult
    property var mimeTypes

    signal closed()

    title: msgConfig.title
    modality: Qt.WindowModal
    folder: msgConfig.defaultValue
    fileMode: {
        if(msgConfig.subType == "open")
            return Labs.FileDialog.OpenFile;
        else if(msgConfig.subType == "files")
            return Labs.FileDialog.OpenFiles;
        else if(msgConfig.subType == "save")
            return Labs.FileDialog.SaveFile;
        else {
            return Labs.FileDialog.OpenFile; //fallback
        }
    }
    nameFilters: QuickPresenter.mimeTypeFilters(mimeTypes ? mimeTypes : msgConfig.viewProperties["mimeTypes"])

    Component.onCompleted: {
        if(msgResult)
            msgResult.setCloseTarget(_fileDialog, "reject()");
    }

    onAccepted: {
        if(msgResult) {
            if(msgConfig.subType == "files")
                msgResult.result = _fileDialog.files;
            else
                msgResult.result = _fileDialog.file;
            msgResult.complete(MessageConfig.Ok);
            msgResult = null;
        }
        closed();
    }

    onRejected: {
        if(msgResult) {
            msgResult.complete(MessageConfig.Cancel);
            msgResult = null;
        }
        closed();
    }
}