我只是一个新手,但这就是我所做的,也许它可以激发灵感;-)
我从“控件”实例化主要组件并传递构建器对象,以便实例化的对象可以使用任何构建器对象(例如 mainwindow)或添加到构建器(aboutDialog 示例)。我还传递了一个字典(dic),其中每个组件都向它添加了“信号”。
然后执行“connect_signals(dic)”。
当然,当我需要将用户参数传递给回调方法时,我需要做一些手动信号连接,但这些很少。
#modules.control.py
class Control:
def __init__(self):
# Load the builder obj
guibuilder = gtk.Builder()
guibuilder.add_from_file("gui/mainwindow.ui")
# Create a dictionnary to store signal from loaded components
dic = {}
# Instanciate the components...
aboutdialog = modules.aboutdialog.AboutDialog(guibuilder, dic)
mainwin = modules.mainwindow.MainWindow(guibuilder, dic, self)
...
guibuilder.connect_signals(dic)
del dic
#modules/aboutdialog.py
class AboutDialog:
def __init__(self, builder, dic):
dic["on_OpenAboutWindow_activate"] = self.on_OpenAboutWindow_activate
self.builder = builder
def on_OpenAboutWindow_activate(self, menu_item):
self.builder.add_from_file("gui/aboutdialog.ui")
self.aboutdialog = self.builder.get_object("aboutdialog")
self.aboutdialog.run()
self.aboutdialog.destroy()
#modules/mainwindow.py
class MainWindow:
def __init__(self, builder, dic, controller):
self.control = controller
# get gui xml and/or signals
dic["on_file_new_activate"] = self.control.newFile
dic["on_file_open_activate"] = self.control.openFile
dic["on_file_save_activate"] = self.control.saveFile
dic["on_file_close_activate"] = self.control.closeFile
...
# get needed gui objects
self.mainWindow = builder.get_object("mainWindow")
...
编辑:将信号自动附加到回调的替代方法:
未经测试的代码
def start_element(name, attrs):
if name == "signal":
if attrs["handler"]:
handler = attrs["handler"]
#Insert code to verify if handler is part of the collection
#we want.
self.handlerList.append(handler)
def extractSignals(uiFile)
import xml.parsers.expat
p = xml.parsers.expat.ParserCreate()
p.StartElementHandler = self.start_element
p.ParseFile(uiFile)
self.handlerList = []
extractSignals(uiFile)
for handler in handlerList:
dic[handler] = eval(''. join(["self.", handler, "_cb"]))