GnomeShellGenericMonitor/examples/dbusitem.py

class DBUSItem:
    def __init__(self, name, text='', style='', icon='', iconStyle='', onClick='', box=''):
        self.name = name
        self.text = text
        self.style= style
        self.icon = icon
        self.iconStyle = iconStyle
        self.onClick = onClick
        self.box = box
        
        self._checkValues()

    def _checkValues(self):
        if self.onClick and not self.onClick in ('signal', 'delete'):
            raise ValueError('Invalid onClick value')
        if self.box and not self.box in ('left', 'center', 'right'):
            raise ValueError('Invalid box value')
        
    def toMap(self):
        myMap = {"name":self.name}
        for p in ('text', 'style', 'icon', 'box'):
            if self.__dict__[p]:
                myMap[p] = self.__dict__[p]
        if self.iconStyle:
            myMap['icon-style'] = self.iconStyle
        if self.onClick:
            myMap['on-click'] = self.onClick
        return [myMap]