def __init__(self, *args):
QtGui.QMainWindow.__init__(self, *args)
# internal data structure
self.companys = None
self.selectedCompany = None
self.loadCompanyListData()
self.mainWidget = QtGui.QWidget(self)
self.setCentralWidget(self.mainWidget)
# build main container
self.mainLayout = QtGui.QVBoxLayout(self.mainWidget)
# build company list
self.companyList = GraphicsCompanyList()
self.companyList.AddSelectionChangeHandler(self.SelectionChangedHandler)
self.companyList.SetSource(CompanyListSource(self.companys.values()))
# build company data view
self.buildCompanyView()
self.mainLayout.addWidget(self.companyView)
print 'Build main data view success.'
# build menu
self.menu = QtGui.QWidget()
self.buildMenu()
self.mainLayout.addWidget(self.menu)
print 'Build menu success.'
