Plugin_SN_Basis/ui/navigation.py

from qgis.PyQt.QtWidgets import QAction, QMenu, QToolBar, QActionGroup

class Navigation:
    def __init__(self, iface):
        self.iface = iface
        self.actions = []
        
        # Menü und Toolbar einmalig anlegen
        self.menu = QMenu("LNO Sachsen", iface.mainWindow())
        iface.mainWindow().menuBar().addMenu(self.menu)

        self.toolbar = QToolBar("LNO Sachsen")
        iface.addToolBar(self.toolbar)

        # Gruppe für exklusive Auswahl (nur ein Plugin aktiv)
        self.plugin_group = QActionGroup(iface.mainWindow())
        self.plugin_group.setExclusive(True)

    def add_action(self, text, callback, tooltip="", priority=100):
        action = QAction(text, self.iface.mainWindow())
        action.setToolTip(tooltip)
        action.setCheckable(True)  # Button kann aktiv sein
        action.triggered.connect(callback)

        # Action in Gruppe aufnehmen
        self.plugin_group.addAction(action)

        # Action mit Priority speichern
        self.actions.append((priority, action))
        return action
    
    def finalize_menu_and_toolbar(self):
        # Sortieren nach Priority
        self.actions.sort(key=lambda x: x[0])

        # Menüeinträge
        self.menu.clear()
        for _, action in self.actions:
            self.menu.addAction(action)

        # Toolbar-Einträge
        self.toolbar.clear()
        for _, action in self.actions:
            self.toolbar.addAction(action)

    def set_active_plugin(self, active_action):
        # Alle zurücksetzen, dann aktives Plugin markieren
        for _, action in self.actions:
            action.setChecked(False)
        active_action.setChecked(True)