TraitsUI

Question

阅读有关将 MVC 模式与 TraitsUI 一起应用的文档，我阅读了示例 MVC_demo.py。现在，我想知道如何管理多个 "MVC"。我想写一些 "includeallMVCs.py" 和类似的东西：

import MyViewController1, MyViewController2, MyViewController2

class IncludeallMVCs(HasTraits):
    view = Include(MyViewController1, MyViewController2, MyViewController3)

其中 MyViewController、MyViewController、MyViewController 类与 MVC_demo 示例相似。

因此，我们的想法是将不同的视图与其控制器分开，然后 "join" 所有视图都在一个 "generic" 视图中。

Answer 1

在示例中搜索我找到了这个：Dynamic Forms Using Instances 然后我修改它分离出一个AdultHandler。在这个例子中我使用了由 AdultHandler 控制的 salary 变量。

文件：adult.py

from traitsui.api import Handler
class AdultHandler(Handler):
    def object_salary_changed (self, info):
        if (info.object.salary >= 20000):
            print "Good Salary!"

        else:
            print "Bad Salary"

文件：adult_model.py

from adult import AdultHandler

class AdultSpec ( HasTraits ):
    """ Trait list for adults (assigned to 'misc' for a Person when age >= 18).
    """

    marital_status   = Enum( 'single', 'married', 'divorced', 'widowed' )
    registered_voter = Bool
    military_service = Bool
    salary = Int

    traits_view = View(
        'marital_status',
        'registered_voter',
        'military_service',
        'salary',
        handler = AdultHandler()
    )

if __name__ == '__main__':
    a = AdultSpec()
    a.configure_traits()

文件：main.py

from adult_model import AdultSpec

class Person ( HasTraits ):
    """ Demo class for demonstrating dynamic interface restructuring.
    """
    datainput       = Instance( AdultSpec )

    # Interface for attributes that depend on the value of 'age':
    spec_group = Group(
        Group(
            Item( name = 'datainput', style = 'custom' ),
            show_labels = False
        ),
        label       = 'Additional Info',
        show_border = True
    )

    # A simple View is enough as long as the right handler is specified:
    view = View(
        Group(
            spec_group
            ),
        title     = 'Using MVC',
        buttons   = [ 'OK' ],
        resizable = True,
        width = 300
    )

# Create the demo:
demo = Person( datainput = AdultSpec() )

# Run the demo (if invoked from the command line):
if __name__ == '__main__':
    demo.configure_traits()

TraitsUI - 连接视图

TraitsUI - Joining views

python

model-view-controller

traits