RF start-up script: Puts a button in your Glyph Editor toolbar which brings the corresponding Font Overview window to the forefront.

summon_FO_button.py

import os
from AppKit import NSImage
from lib.UI.toolbarGlyphTools import ToolbarGlyphTools
from mojo.subscriber import Subscriber, registerRoboFontSubscriber


class SummonFontOverview(Subscriber):

	def glyphEditorWantsToolbarItems(self, info):

		label = identifier = 'Summon Font Overview'

		image = NSImage.imageNamed_("toolbarGlyphs").copy()
		image.setSize_((18, 18))

		view = ToolbarGlyphTools((25, 25),
			[dict(image=image, toolTip=label)], trackingMode="one")

		newItem = {
			'itemIdentifier': identifier,
			'label':          label,
			'view':           view,
			'callback':       self.summonFO
			}

		info['itemDescriptions'].insert(-2, newItem)

	def summonFO(self, sender):
		CurrentFont().document().getMainWindow().open()


if __name__ == '__main__':
	registerRoboFontSubscriber(SummonFontOverview)