gives an overview of active subscribers, where they come from, and gives the option to unsubscribe selected ones

subscriberer.py

import ezui
from mojo.subscriber import listRegisteredSubscribers, unregisterRoboFontSubscriber, unregisterFontOverviewSubscriber, unregisterGlyphEditorSubscriber, unregisterSpaceCenterSubscriber, unregisterCurrentFontSubscriber, unregisterCurrentGlyphSubscriber

class SubscribererController(ezui.WindowController):

    def build(self):
        self._subscriber_list = self._get_subscriber_list()
        
        content = """
        = HorizontalStack
        |---------------|
        | name | source | @subscriberTable
        |------|--------|
        |      |        |
        |---------------|
        > ({arrow.clockwise.circle.fill}) @subscriberTableReloadButton
        > (Unsubscribe) @subscriberTableUnsubscribeButton
        """

        subscriberTableItems = self._write_table_items()

        descriptionData = dict(
            subscriberTable=dict(
                width="auto",
                items=subscriberTableItems,
                columnDescriptions=[
                    dict(
                        identifier="name",
                        title="Name",
                        width=240
                    ),
                    dict(
                        identifier="source",
                        title="Source",
                        width=160
                    )
                ]
            )
        )
        self.w = ezui.EZWindow(
            title="Subscriberer",
            size=(500, 350),
            content=content,
            descriptionData=descriptionData,
            controller=self
        )

    def started(self):
        self.w.open()

    def subscriberTableReloadButtonCallback(self, sender):
        self._update_table_items()

    def subscriberTableUnsubscribeButtonCallback(self, sender):
        table = self.w.getItem("subscriberTable")
        selection = table.getSelectedIndexes()
        
        for s in selection:
            for registered_subs in listRegisteredSubscribers():
                if self._subscriber_list[s]['sub_id'] in registered_subs.getIdentifier():
                    unregisterRoboFontSubscriber(registered_subs)
                    unregisterFontOverviewSubscriber(registered_subs)
                    unregisterGlyphEditorSubscriber(registered_subs)
                    unregisterSpaceCenterSubscriber(registered_subs)
                    unregisterCurrentFontSubscriber(registered_subs)
                    unregisterCurrentGlyphSubscriber(registered_subs)
          
        self._update_table_items()  

    def _update_table_items(self):
        self._subscriber_list = self._get_subscriber_list()
        table = self.w.getItem("subscriberTable")
        items = self._write_table_items()
        table.set(items)

    def _write_table_items(self):
        c = list()
        for s in self._subscriber_list:
            c.append(dict(name=s['name'], source=s['source']))
        return c
    
    def _get_subscriber_list(self):
        subs_list = list()
        for s in listRegisteredSubscribers():
            identifier = s.getIdentifier()
            # name is first bit, source all the rest, 
            # [:-1] cuts off number id at the end
            name, *source = identifier.split('.')[:-1]
            subs_list.append(dict(
                                 name=name,
                                 source='.'.join(source),
                                 sub_id=identifier
                                 )
                            )
        return subs_list

SubscribererController()