"""Tool Supporting Basic Editor Functions"""
from typing import cast, Protocol
from PySide6.QtWidgets import QTextEdit, QVBoxLayout

import trovedb.trove as tr
from .tool import Tool


class ToolBasicEditor(Tool):
    def __init__(self, note, parent=None):
        super().__init__(note, parent)

        layout = QVBoxLayout(self)
        layout.setContentsMargins(0, 0, 0, 0)
        layout.setSpacing(0)

        self._text_edit = QTextEdit()
        layout.addWidget(self._text_edit)
        self.refresh()

    def _refresh_blob(self, note: tr.Blob):
        self._text_edit.setPlainText(note.read().decode("utf-8"))

    def refresh(self):
        if isinstance(self.note, tr.Blob):
            self._refresh_blob(cast(tr.Blob, self.note))