when opening a new glyph window, with shift down, force glyph to use current glyph window, regardless of the font

force_same_window.py

from mojo.subscriber import Subscriber, registerRoboFontSubscriber, unregisterRoboFontSubscriber
from mojo.UI import CurrentGlyphWindow
import AppKit 

class force_same_window(Subscriber):

    debug = True

    def build(self):
        self.windowToClose = None
        self.windowTofocus = None 

    def glyphEditorWillOpen(self, info):
        current_editor = CurrentGlyphWindow()
        editor = info.get("glyphEditor")
        glyph = info.get("glyph")
        if self.shift and (editor is not None) and (glyph is not None):
            if editor != current_editor:
                current_editor.setGlyph(glyph)
                self.windowToClose = editor
                self.windowTofocus = current_editor

    def glyphEditorDidOpen(self, info):
        if info["glyphEditor"] == self.windowToClose:
            self.windowToClose.close()
        if self.windowTofocus:
            self.windowTofocus.w.getNSWindow().makeKeyAndOrderFront_(None)

    @property
    def shift(self) -> bool:
        return AppKit.NSEvent.modifierFlags() & AppKit.NSShiftKeyMask
        
if __name__ == '__main__':
    registerRoboFontSubscriber(force_same_window)