Initializes the Widget ui.

def __initialize_ui(self):
        """
        Initializes the Widget ui.
        """

        self.setAttribute(Qt.WA_DeleteOnClose)
        self.setWordWrapMode(QTextOption.NoWrap)

        self.setAcceptDrops(True)

        if platform.system() == "Windows" or platform.system() == "Microsoft":
            fontFamily, fontSize = self.__default_fonts_settings["Windows"]
        elif platform.system() == "Darwin":
            fontFamily, fontSize = self.__default_fonts_settings["Darwin"]
        elif platform.system() == "Linux":
            fontFamily, fontSize = self.__default_fonts_settings["Linux"]
        font = QFont(fontFamily)
        font.setPointSize(fontSize)
        self.setFont(font)