Qt Recursive Structure Form

qtrsf.py

import sys

from typing import Any

from PySide2.QtWidgets import (  # type: ignore
    QVBoxLayout,
    QLineEdit,
    QPushButton,
    QLabel,
    QFormLayout,
    QTabWidget,
    QWidget,
    QMainWindow,
    QApplication,
    QScrollArea,
    QGroupBox,
    QComboBox,
)


class RecursiveStructureForm(QWidget):
    def __init__(self, parent=None):
        super(RecursiveStructureForm, self).__init__(parent)
        widget = QWidget()
        self.form_layout = QFormLayout()
        widget.setLayout(self.form_layout)
        scroll = QScrollArea()
        scroll.setWidget(widget)
        scroll.setWidgetResizable(True)
        scroll.setFixedHeight(400)
        scroll.setFixedWidth(400)
        layout = QVBoxLayout(self)
        layout.addWidget(scroll)

    def setup(self):
        for i in range(20):
            group_box = QGroupBox(str(i))
            group_box_layout = QFormLayout()
            group_box_layout.addRow(QLabel("foo"), QLabel("bar"))
            group_box.setLayout(group_box_layout)
            self.form_layout.addRow(group_box)

    def rst(self, root: Any, key: str = "root", parent_layout: QFormLayout = None) -> None:
        layout = self.form_layout if parent_layout is None else parent_layout 
        if type(root) is dict and len(root.keys()) > 0:
            for k, v in root.items():
                child_widget = QGroupBox(k)
                child_layout = QFormLayout()
                child_widget.setLayout(child_layout)
                layout.addRow(child_widget)
                self.rst(v, f"{key}['{k}']", child_layout)
        elif type(root) is dict and len(root.keys()) == 0:
            print(">>> Skipping key with empty dictionary as value", key)
        elif type(root) is list and len(root) > 0 and type(root[0]) is dict:
            for i, x in enumerate(root):
                child_widget = QGroupBox(str(i))
                child_layout = QFormLayout()
                child_widget.setLayout(child_layout)
                layout.addRow(child_widget)
                self.rst(x, f"{key}[{i}]", child_layout)
        else:
            layout.addRow(QLabel(str(key)), QLabel(str(root)))


if __name__ == "__main__":
    hard = {
        "alpha": {
            "zulu": "yankee",
            "victor": "uniform",
            "bravo": [
                1,
                "awesome",
                "list",
            ],
            "delta": [
                {
                    "deeper": "recursion",
                    "what would be": "the iterative solution?",
                }
            ],
            "echo": [],
            "golf": {},
        }
    }

    # Create the Qt Application
    app = QApplication(sys.argv)
    # Create and show the form
    rsf = RecursiveStructureForm()
    rsf.rst(hard)
    rsf.show()
    # Run the main Qt loop
    sys.exit(app.exec_())