adds toggle to synchronize the text, size, pre, post, and suffix data in all open Robofont space center windows

syncCenter.py

# set as a startup script
# jackson at okaytype.com
# issues: sometimes doesn't update one font
# issues: needs some more testing to make sure it's not slowing things down
# next:   add more settings, increase efficiency

from mojo.UI import AllSpaceCenters, CurrentSpaceCenter
from mojo.events import addObserver, removeObserver
from vanilla import *

cachedsettings = 'cachedsettings'

class syncCenter(object):
 
    def __init__(self):        
        addObserver(self, "addSyncSpaceTool", "spaceCenterDidOpen")

    def removeSyncSpaceTool(self, sender):
        removeObserver(self, 'spaceCenterDrawLineView')
        removeObserver(self, 'removeSyncSpaceTool')

    def addSyncSpaceTool(self, sender):
        addObserver(self, 'sync', 'spaceCenterDrawLineView')
        addObserver(self, "removeSyncSpaceTool", "spaceCenterWillClose")
        sp = CurrentSpaceCenter()
        sp.syncToggle = CheckBox((-22, -22, 22, 22), title=None, callback=self.checkBoxSync, value=True) # l, t, w, h 

    def sync(self, none):

        # collect new settings
        global cachedsettings
        sp = CurrentSpaceCenter()
        spText = sp.getRaw() 
        spPre = sp.getPre()
        spAfter = sp.getAfter() 
        spPointSize = sp.getPointSize() 
        spSuffix = sp.getSuffix()
        spLineHt = sp.getLineHeight()
        settings = (spText, spPre, spAfter, spPointSize, spSuffix, spLineHt)

        if sp.syncToggle:
            # stop if unchecked
            if not sp.syncToggle.get():
                return
            # stop if settings haven't changed
            if settings == cachedsettings:
                return
            # proceed if changes were made
            else:
                # update settings
                for sc in AllSpaceCenters():
                    if sc != sp:
                        sc.setPre(spPre)
                        sc.setAfter(spAfter)
                        sc.setPointSize(spPointSize)
                        sc.setSuffix(spSuffix)
                        sc.setLineHeight(spLineHt)
                        sc.setRaw(spText)
                # save settings for next time
                cachedsettings = settings

    def checkBoxSync(self, sender):
        state = sender.get()
        for sc in AllSpaceCenters():
            sc.syncToggle.set(state)
        # sync spacecenters if checked
        if state == 1:
            self.sync(True)

syncCenter()