MIL-003: Step 2 - New flash cards
Review record RC-025 (Go, autonomous mode, not independent). Task: MIL-003#1 Task: MIL-003#2 Task: MIL-003#3 Task: MIL-003#4 Task: MIL-003#5
This commit is contained in:
@@ -1,44 +1,77 @@
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"""Entry point and composition root of the flash card program.
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@file app.py
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@brief Creates the window, its view model and view, and runs the main loop.
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"""
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import tkinter as tk
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from collections.abc import Sequence
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from typing import NoReturn
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from flash_card.presentation.features.flash_card.flash_card_view import FlashCardView
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from flash_card.presentation.features.flash_card.flash_card_view_model import (
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FlashCardViewModel,
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)
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def create_application() -> tuple[tk.Tk, FlashCardView]:
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"""Create the root window and the flash card view.
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@return The root window and the view built on it.
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"""
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root = tk.Tk()
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view = FlashCardView(root, FlashCardViewModel())
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return root, view
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def main(argv: Sequence[str] | None = None) -> int:
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"""Run the program and return its exit code.
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@param argv Command line arguments, or None for none.
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@return The exit code, 0 on success.
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"""
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root, _view = create_application()
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root.mainloop()
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return 0
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def run() -> NoReturn:
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"""Run the program and exit the interpreter with its exit code.
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@return Never returns; the function always raises SystemExit.
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@throws SystemExit Always, with the exit code of main.
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"""
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raise SystemExit(main())
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"""Entry point and composition root of the flash card program.
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@file app.py
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@brief Creates the window, its view model and view, and runs the main loop.
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"""
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import argparse
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import logging
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import random
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import tkinter as tk
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from collections.abc import Sequence
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from pathlib import Path
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from typing import NoReturn
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from flash_card.application.use_cases.open_study_session import open_study_session
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from flash_card.constants import DEFAULT_DATA_DIR, VOCABULARY_FILE_NAME
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from flash_card.domain.errors.vocabulary_errors import VocabularyError
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from flash_card.infrastructure.persistence.csv_vocabulary_repository import (
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CsvVocabularyRepository,
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)
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from flash_card.presentation.features.flash_card.flash_card_view import FlashCardView
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from flash_card.presentation.features.flash_card.flash_card_view_model import (
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FlashCardViewModel,
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)
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## @brief Logger of the entry point.
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_logger = logging.getLogger(__name__)
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def create_application(
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data_dir: Path | None = None,
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) -> tuple[tk.Tk, FlashCardView]:
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"""Create the root window and the flash card view.
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@param data_dir Folder of the data files, or None for the default folder.
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@return The root window and the view built on it.
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@throws VocabularyError When the word list cannot be loaded.
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"""
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folder = DEFAULT_DATA_DIR if data_dir is None else data_dir
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repository = CsvVocabularyRepository(folder / VOCABULARY_FILE_NAME)
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session = open_study_session(repository, random.choice)
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view_model = FlashCardViewModel(session)
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root = tk.Tk()
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view = FlashCardView(root, view_model)
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return root, view
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def main(argv: Sequence[str] | None = None) -> int:
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"""Run the program and return its exit code.
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@param argv Command line arguments, or None for those of the process.
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@return The exit code, 0 on success and 1 when the word list is unusable.
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"""
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parser = argparse.ArgumentParser(description="Flash card program.")
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parser.add_argument(
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"--data-dir",
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type=Path,
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default=DEFAULT_DATA_DIR,
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help="folder of the data files",
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)
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args = parser.parse_args(argv)
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try:
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root, _view = create_application(args.data_dir)
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except VocabularyError as error:
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_logger.error("%s", error)
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return 1
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root.mainloop()
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return 0
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def run() -> NoReturn:
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"""Run the program and exit the interpreter with its exit code.
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@return Never returns; the function always raises SystemExit.
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@throws SystemExit Always, with the exit code of main.
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"""
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raise SystemExit(main())
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@@ -84,11 +84,30 @@ class FlashCardView:
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## @brief Button for a word the user does not know.
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self.wrong_button = tk.Button(
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root, image=self._wrong_image, highlightthickness=0, bd=0
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root,
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image=self._wrong_image,
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highlightthickness=0,
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bd=0,
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command=self.next_card,
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)
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self.wrong_button.grid(row=1, column=0)
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## @brief Button for a word the user knows.
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self.right_button = tk.Button(
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root, image=self._right_image, highlightthickness=0, bd=0
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root,
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image=self._right_image,
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highlightthickness=0,
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bd=0,
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command=self.next_card,
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)
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self.right_button.grid(row=1, column=1)
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def next_card(self) -> None:
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"""Show the next card.
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@return Nothing.
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"""
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self._view_model.next_card()
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self.canvas.itemconfig(
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self.language_text_id, text=self._view_model.language_name
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)
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self.canvas.itemconfig(self.word_text_id, text=self._view_model.text)
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@@ -1,27 +1,69 @@
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"""View model of the flash card screen.
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@file flash_card_view_model.py
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@brief Exposes the texts shown on the card; free of any Tkinter import.
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"""
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from flash_card.constants import PLACEHOLDER_LANGUAGE_NAME, PLACEHOLDER_WORD
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class FlashCardViewModel:
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"""Data the flash card view shows."""
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@property
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def language_name(self) -> str:
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"""Return the language name shown on the card.
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@return The display name of the language.
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"""
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return PLACEHOLDER_LANGUAGE_NAME
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@property
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def text(self) -> str:
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"""Return the word shown on the card.
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@return The word text.
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"""
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return PLACEHOLDER_WORD
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"""View model of the flash card screen.
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@file flash_card_view_model.py
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@brief Exposes the texts shown on the card; free of any Tkinter import.
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"""
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from collections.abc import Mapping
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from flash_card.application.dto.card_dto import CardDto
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from flash_card.application.use_cases.study_session import StudySession
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from flash_card.constants import FINISHED_MESSAGE, LANGUAGE_NAMES
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class FlashCardViewModel:
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"""Data the flash card view shows."""
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def __init__(
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self,
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session: StudySession,
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language_names: Mapping[str, str] = LANGUAGE_NAMES,
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) -> None:
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"""Create the view model and draw the first card.
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@param session The study session that supplies the cards.
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@param language_names Display names by language code.
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"""
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## @brief The study session that supplies the cards.
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self._session = session
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## @brief Display names by language code.
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self._language_names = language_names
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## @brief The card shown now, or None when none is left.
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self._card: CardDto | None = session.next_card()
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@property
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def is_finished(self) -> bool:
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"""Tell whether no card is left to show.
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@return True when there is no card.
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"""
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return self._card is None
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@property
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def language_name(self) -> str:
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"""Return the language name shown on the card.
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@return The display name of the front language, upper case code when
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unknown, or an empty string when no card is left.
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"""
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if self._card is None:
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return ""
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code = self._card.front_language
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return self._language_names.get(code, code.upper())
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@property
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def text(self) -> str:
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"""Return the word shown on the card.
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@return The front text, or the finished message when no card is left.
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"""
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if self._card is None:
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return FINISHED_MESSAGE
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return self._card.front_text
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def next_card(self) -> None:
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"""Draw the next card.
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@return Nothing.
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"""
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self._card = self._session.next_card()
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