# gui.py
from PyQt5.QtWidgets import QWidget, QListWidget, QListWidgetItem, QPushButton, QLabel, QHBoxLayout, QVBoxLayout

class ListItemWidget(QWidget):
    def __init__(self, text, index):
        super().__init__()
        self.index = index
        lay = QHBoxLayout(self)
        lay.addWidget(QLabel(text))
        lay.addStretch()
        self.btn_start = QPushButton("Start")
        self.btn_stop  = QPushButton("Stop")
        self.btn_stop.setEnabled(False)
        lay.addWidget(self.btn_start)
        lay.addWidget(self.btn_stop)
        lay.setContentsMargins(5,2,5,2)

    def set_running(self, running: bool):
        self.btn_start.setEnabled(not running)
        self.btn_stop.setEnabled(running)

class MainWindow(QWidget):
    def __init__(self):
        super().__init__()
        self.setWindowTitle("Logger")
        lay = QVBoxLayout(self)
        self.list_widget = QListWidget()
        lay.addWidget(self.list_widget)

    def add_list_item(self, text, index):
        item = QListWidgetItem()
        w = ListItemWidget(text, index)
        item.setSizeHint(w.sizeHint())
        self.list_widget.addItem(item)
        self.list_widget.setItemWidget(item, w)
        return w