Embedding code editor within larger application

To embed code editor into your application you will typically use QPythonPlainTextWidget. This class extends QWidget and in its layout it has QPythonPlainTextEdit and right below associated info panel. This panel displays current cursor line and number column and a search field when user presses Ctrl-F. Here is a simple example

from PySide6.QtWidgets import QMainWindow, QWidget, QVBoxLayout,QMenuBar, QMenu
from PySide6.QtGui import QAction
from qppte import QPythonPlainTextWidget, QPythonPlainTextSettingsDialog


class TextEditorWindow(QMainWindow):
    def __init__(self):
        super().__init__()
        self.setGeometry(100, 100, 800, 600)

        text_widget = QPythonPlainTextWidget()
        search_action = QAction("Search", self)

        # following triggers search even when editor widget does not have focus
        search_action.setShortcut(text_widget.editor.actionTriggers["search"].getQKeyCombination())
        search_action.triggered.connect(text_widget.editor.startSearch)
        self.addAction(search_action)

        root_panel = QWidget()
        root_panel.setLayout(QVBoxLayout())
        root_panel.layout().addWidget(text_widget)

        # setup File->Setting menu to open settings dialog
        menu_bar = QMenuBar()
        file_menu = QMenu("&File", menu_bar)
        file_menu.addAction(
            "&Settings",
            lambda: QPythonPlainTextSettingsDialog(
                self, 
                text_widget.editor.settings, # setting to display and chage 
                text_widget.editor # editor class to automatically apply new settings
            ).exec(),
        )
        menu_bar.addMenu(file_menu)

        self.setCentralWidget(root_panel)