open_notepad.py

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"""!
********************************************************************************
@file   open_notepad.py
@brief  open notepad file in thread to prevent freeze of window
********************************************************************************
"""
 
import os
import enum
import subprocess
import logging
from typing import Callable, Any
 
from Source.version import __title__
from Source.Util.gui_toolkit import SIGNAL, THREAD, emit_signal, connect_signal, disconnect_signal
 
log = logging.getLogger(__title__)
 
 
class ENotepadSelection(str, enum.Enum):
    """!
    @brief File selection to open notepad.
    """
    USER = "User"
    ARTICLES = "Articles"
    STATUS = "Status"
    REPORT = "Report"
    UNKNOWN = "Unknown"
 
 
class OpenNotepadWorker(THREAD):
    """!
    @brief Open Notepad Worker.
    """
    notepad_signal = SIGNAL()
 
    def __init__(self) -> None:
        super().__init__()
        self.s_file = ""
        self.e_selection = ENotepadSelection.UNKNOWN
        self.signal_is_connected = False
 
    def open_report_file(self, s_file_name_path: str, e_selection: ENotepadSelection, callback: Callable[[], Any]) -> None:
        """!
        @brief Open report file. Set data to open and start open thread
        @param s_file_name_path : file to open
        @param e_selection : Status of file to open
        @param callback : callback for connected signal
        """
        self.s_file = s_file_name_path
        self.e_selection = e_selection
        self.start()  # function "run" is called by thread
        if self.signal_is_connected:
            disconnect_signal(self.notepad_signal)  # disconnect old signal
        connect_signal(self.notepad_signal, callback)
        self.signal_is_connected = True
 
    def run(self) -> None:
        """!
        @brief Open file in Notepad.
        """
        with subprocess.Popen(["notepad.exe", self.s_file]):
            pass
        if self.e_selection == ENotepadSelection.STATUS:
            os.remove(self.s_file)
        emit_signal(self.notepad_signal)