An example to show how to make defcon notifications in RoboFont

RoboFontDefconExample.py

from mojo.events import addObserver, removeObserver
from vanilla import Window

class RoboFontDefconExample():

	def __init__(self):
		self.w = Window((300, 120), "Debuggin window")
		self.fonts = {}
		for f in AllFonts():
			self._addFont(f)
		addObserver(self, "_fontDidOpen", "fontDidOpen")
		addObserver(self, "_fontWillClose", "fontWillClose")
		self.w.bind("close", self.destroy)
		self.w.open()

	def _fontDidOpen(self, info):
		f = info['font']
		self._addFont(f)

	def _fontWillClose(self, f):
		self._removeFont(f)

	def _addFont(self, f):
		fontID = list(f.naked().identifiers)[0]
		self.fonts[fontID] = f
		f = f.naked()
		f.dispatcher.addObserver(observer=self, methodName="_glyphNameChanged", notification="Glyph.NameChanged", observable=None)
		f.dispatcher.addObserver(observer=self, methodName="_glyphUnicodesChanged", notification="Glyph.UnicodesChanged", observable=None)
		f.dispatcher.addObserver(observer=self, methodName="_glyphShapeChanged", notification="Glyph.ContoursChanged", observable=None)
		f.dispatcher.addObserver(observer=self, methodName="_glyphShapeChanged", notification="Glyph.ComponentsChanged", observable=None)
		f.dispatcher.addObserver(observer=self, methodName="_glyphChanged", notification="Glyph.Changed", observable=None)
		f.dispatcher.addObserver(observer=self, methodName="_glyphWidthChanged", notification="Glyph.WidthChanged", observable=None)

	def _removeFont(self, f):
		fontID = list(f.naked().identifiers)[0]		
		del self.fonts[fontID]
		f = f.naked()
		f.dispatcher.removeObserver(observer=self, notification="Glyph.NameChanged")
		f.dispatcher.removeObserver(observer=self, notification="Glyph.UnicodesChanged")
		f.dispatcher.removeObserver(observer=self, notification="Glyph.ContoursChanged")
		f.dispatcher.removeObserver(observer=self, notification="Glyph.ComponentsChanged")
		f.dispatcher.removeObserver(observer=self, notification="Glyph.Changed")
		f.dispatcher.removeObserver(observer=self, notification="Glyph.WidthChanged")

	def _glyphNameChanged(self, info):
		print('_glyphNameChanged', info)

	def _glyphUnicodesChanged(self, info):
		print('_glyphUnicodesChanged', info)

	def _glyphShapeChanged(self, info):
		print('_glyphShapeChanged', info)

	def _glyphChanged(self, info):
		print('_glyphChanged', info)

	def _glyphWidthChanged(self, info):
		print('_glyphWidthChanged', info)

	def destroy(self, sender):
		removeObserver(self, "fontDidOpen")
		removeObserver(self, "fontWillClose")
		for f in list(self.fonts.values()):
			self._removeFont(f)


rfd = RoboFontDefconExample()