def get_trait_names():
global TRAIT_NAMES
from enthought.traits.api import HasTraits
if TRAIT_NAMES is None:
TRAIT_NAMES = set( dir2(HasTraits()) ) - set( dir2(object()) )
else:
return TRAIT_NAMES
def test_extended(self):
""" Tests a dynamic trait change handler using extended names. """
class Child(HasTraits):
i = Int
class Parent(HasTraits):
child = Instance(Child)
# Create objects
parent = Parent(child=Child())
target = HasTraits()
# Set up to count changes in i
self.count = 0
def count_notifies():
self.count += 1
parent.on_trait_change(count_notifies, "child:i", target=target)
# Change the trait
parent.child.i = 10
# Delete the target and change it again
del target
parent.child.i = 0
# The count should be 1
self.assertEqual(self.count, 1)
def _showerror_fired(self,evt):
if self.tmodel.lastfitfailure:
ex = self.tmodel.lastfitfailure
dialog = HasTraits(s=ex.__class__.__name__+': '+str(ex))
view = View(Item('s',style='custom',show_label=False),
resizable=True,buttons=['OK'],title='Fitting error message')
dialog.edit_traits(view=view)
def test_simple(self):
""" Tests a simple dynamic trait change handler. """
class Test(HasTraits):
i = Int
# Create objects
obj = Test()
target = HasTraits()
# Set up to count changes in i
self.count = 0
def count_notifies():
self.count += 1
obj.on_trait_change(count_notifies, "i", target=target)
# Change the trait
obj.i = 10
# Delete the target and change it again
del target
obj.i = 0
# The count should be 1
self.assertEqual(self.count, 1)
Item('p2.name', label=u"姓名"),
Item('p2.salary', label=u"工资"),
Item('p2.bonus', label=u"奖金"),
show_border=True),
orientation='horizontal'),
title=u"员工对比")
employee1 = Employee(department=u"开发", name=u"张三", salary=3000, bonus=300)
employee2 = Employee(department=u"销售", name=u"李四", salary=4000, bonus=400)
if __name__ == "__main__":
# 方法一：调用configure_traits，通过context关键字指定模型对象
HasTraits().configure_traits(view=comp_view,
context={
"p1": employee1,
"p2": employee2
})
# 方法二：调用视图对象的ui方法显示模型，它的参数是一个字典，将作为
# UI对象的context属性。此方法需要后续的代码启动界面库的消息循环
#comp_view.ui({"p1":employee1, "p2":employee2})
##### 通过GUI启动消息循环
#from enthought.pyface.api import GUI
#GUI().start_event_loop() # 开始后台界面库的消息循环
##### 直接启动wx库的消息循环
#import wx
#wx.PySimpleApp().MainLoop() # 开始wx的消息循环
