1class ToolbarPanelRegistry:
 2    def __init__(self):
 3        self._panels = {}
 4
 5    def register_panel(self, panel_class):
 6        self._panels[panel_class.name] = panel_class
 7
 8    def get_panels(self):
 9        return self._panels.values()
10
11
12# Global registry instance
13registry = ToolbarPanelRegistry()
14
15
16def register_toolbar_panel(panel_class):
17    """Decorator to register a toolbar panel."""
18    registry.register_panel(panel_class)
19    return panel_class