from PySide6.QtWidgets import (
    QApplication, QWidget, QVBoxLayout, QToolButton, QFrame, QLabel, QSizePolicy
)
from PySide6.QtCore import Qt


class CollapsiblePanel(QWidget):
    def __init__(self, title="", parent=None):
        super().__init__(parent)

        self.toggle_button = QToolButton(text=title, checkable=True, checked=False)
        self.toggle_button.setStyleSheet("QToolButton { border: none; }")
        self.toggle_button.setToolButtonStyle(Qt.ToolButtonTextBesideIcon)
        self.toggle_button.setArrowType(Qt.RightArrow)
        self.toggle_button.clicked.connect(self.on_toggle)

        self.content_area = QFrame()
        self.content_area.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Fixed)
        self.content_area.setMaximumHeight(0)  # startowo schowane

        # Layout panelu
        layout = QVBoxLayout(self)
        layout.setContentsMargins(0, 0, 0, 0)
        layout.addWidget(self.toggle_button)
        layout.addWidget(self.content_area)

    def on_toggle(self, checked):
        if checked:
            self.toggle_button.setArrowType(Qt.DownArrow)
            self.content_area.setMaximumHeight(16777215)  # odblokuj wysokość
        else:
            self.toggle_button.setArrowType(Qt.RightArrow)
            self.content_area.setMaximumHeight(0)  # schowaj


if __name__ == "__main__":
    app = QApplication([])

    main = QWidget()
    layout = QVBoxLayout(main)

    # Panel 1
    panel1 = CollapsiblePanel("Opcje")
    panel1.content_area.setLayout(QVBoxLayout())
    panel1.content_area.layout().addWidget(QLabel("Opcja A"))
    panel1.content_area.layout().addWidget(QLabel("Opcja B"))

    # Panel 2
    panel2 = CollapsiblePanel("Zaawansowane")
    panel2.content_area.setLayout(QVBoxLayout())
    panel2.content_area.layout().addWidget(QLabel("Parametr 1"))
    panel2.content_area.layout().addWidget(QLabel("Parametr 2"))

    layout.addWidget(panel1)
    layout.addWidget(panel2)
    layout.addStretch()

    main.show()
    app.exec()