4

我正在使用 TraitsUI 开发应用程序。

我需要弹出一个窗口来请求一些值。

会有类似 ProcessValues 按钮和 SaveValues 按钮的东西。

  • 如果单击 ProcessValues，则应进行某些操作，然后应关闭窗口
  • 如果单击 SaveValues，则应执行其他操作，窗口也应关闭。

应该没有确定按钮

在下面的示例代码中，单击按钮会打印处理程序中的消息，但除了单击框架中的 [x] 之外，我不知道如何使窗口自行关闭。

重载 close() 似乎不起作用，因为它在单击 OK 后被调用。也许有一种方法可以生成 close_window 事件，或者它可能是别的东西。

有人可以帮忙吗？

from enthought.traits.api import HasTraits, Instance, Str, Int, List, Any, DelegatesTo
from enthought.traits.ui.api import Handler, View, Item, Action

class MyPanelHandler(Handler):
    def _process_values(self, info):
        #>>>reach process_values() through info and call
        print 'values processed OK'
        #>>> what goes here so that the window is closed?
    def _save_values(self, info):
        #>>>reach save_values() through info and call
        print 'values saved OK'
        #>>> what goes here so that the window is closed?

class MyPanel(HasTraits):
    model = Any
    name = Str
    age = Int
    process_values_button = Action(name = 'Process Values', action = '_process_values')
    save_values_button = Action(name = 'Save Params', action = '_save_values')

    view = View( 'name', 'age', handler = MyPanelHandler(),
            buttons = [process_values_button, save_values_button],)

class MyApp(HasTraits):
    panel = Instance(MyPanel)

    def __init__(self):
        self.panel = MyPanel(model = self)
    def get_values(self):
        self.panel.configure_traits()
    def save_values(self, name, age):
        print '... doing whatever to save values'
    def process_values(self):
        print '... doing whatever to process values'

if __name__ == '__main__':
    a = MyApp()
    a.get_values()
4

1 回答 1

7

我在其他地方找到了解决方案。要关闭窗口，单击调用 Handler 中方法的 Action，请从 Handler 调用“info.ui.dispose()”（其中 info 是传递给处理程序方法的唯一参数，而不是 self）。

这是修正后的虚拟程序；当心“if not info.initialized”部分——没有它，如果由于某种原因 uiinfo 对象需要很长时间才能填充，则可能会引发异常。

from enthought.traits.api import HasTraits, Instance, Str, Int, List, Any, DelegatesTo
from enthought.traits.ui.api import Handler, View, Item, Action

class MyPanelHandler(Handler):
    def _process_values(self, info):
        if not info.initialized: 
            return # do this in case info takes long to initialize
        # invoke methods
        info.object.model.process_values(info.object.name, info.object.age)
        print 'values have been processed'
        info.ui.dispose() # THIS IS WHAT I WAS ACTUALLY ASKING FOR
    def _save_values(self, info):
        if not info.initialized: return
        info.object.model.save_values(info.object.name, info.object.age)
        print 'values have been saved'
        info.ui.dispose()

class MyPanel(HasTraits):
    model = Any
    name = Str
    age = Int
    process_values_button = Action(name = 'Process Values', action = '_process_values')
    save_values_button = Action(name = 'Save Params', action = '_save_values')   
    view = View( 'name', 'age', handler = MyPanelHandler(),
            buttons = [process_values_button, save_values_button],)

class MyApp(HasTraits):
    panel = Instance(MyPanel)
    def __init__(self):
        self.panel = MyPanel(model = self)
    def get_values(self):
        self.panel.configure_traits()
    def save_values(self, name, age):
        print '... saving (%s, %s)' % (name, age)
    def process_values(self, name, age):
        print '... processing (%s, %s)' % (name, age)

if __name__ == '__main__':
    a = MyApp()
    a.get_values()
于 2012-06-15T10:55:46.190 回答