Python抽象工厂模式
Python抽象工厂模式详细操作教程
抽象工厂模式也称为工厂工厂。该设计模式属于创新设计模式类别。它提供了创建对象的最佳方法之一。
它包含一个接口，负责创建与Factory相关的对象。
如何实现抽象工厂模式？
以下程序有助于实现抽象工厂模式。
# Filename : example.py
# Copyright : 2020 By Lidihuo
# Author by : www.lidihuo.com
# Date : 2020-08-22
class Window:
__toolkit = ""
__purpose = ""
def __init__(self, toolkit, purpose):
self.__toolkit = toolkit
self.__purpose = purpose
def getToolkit(self):
return self.__toolkit
def getType(self):
return self.__purpose
class GtkToolboxWindow(Window):
def __init__(self):
Window.__init__(self, "Gtk", "ToolboxWindow")
class GtkLayersWindow(Window):
def __init__(self):
Window.__init__(self, "Gtk", "LayersWindow")
class GtkMainWindow(Window):
def __init__(self):
Window.__init__(self, "Gtk", "MainWindow")
class QtToolboxWindow(Window):
def __init__(self):
Window.__init__(self, "Qt", "ToolboxWindow")
class QtLayersWindow(Window):
def __init__(self):
Window.__init__(self, "Qt", "LayersWindow")
class QtMainWindow(Window):
def __init__(self):
Window.__init__(self, "Qt", "MainWindow")
# Abstract factory class
class UIFactory:
def getToolboxWindow(self): pass
def getLayersWindow(self): pass
def getMainWindow(self): pass
class GtkUIFactory(UIFactory):
def getToolboxWindow(self):
return GtkToolboxWindow()
def getLayersWindow(self):
return GtkLayersWindow()
def getMainWindow(self):
return GtkMainWindow()
class QtUIFactory(UIFactory):
def getToolboxWindow(self):
return QtToolboxWindow()
def getLayersWindow(self):
return QtLayersWindow()
def getMainWindow(self):
return QtMainWindow()
if __name__ == "__main__":
gnome = True
kde = not gnome
if gnome:
ui = GtkUIFactory()
elif kde:
ui = QtUIFactory()
toolbox = ui.getToolboxWindow()
layers = ui.getLayersWindow()
main = ui.getMainWindow()
print("%s:%s" % (toolbox.getToolkit(), toolbox.getType()))
print("%s:%s" % (layers.getToolkit(), layers.getType()))
print("%s:%s" % (main.getToolkit(), main.getType()))
输出
上面的程序生成以下输出-
# Filename : example.py
# Copyright : 2020 By Lidihuo
# Author by : www.lidihuo.com
# Date : 2020-08-22
Gtk:ToolboxWindow
Gtk:LayersWindow
Gtk:MainWindow
说明
在上面的程序中，抽象工厂为每个窗口创建对象。它调用每个方法，该方法将按预期执行输出。
