Class enthought.​mayavi.​core.​traits.​ShadowProperty

Contents:
• Base classes
• Attributes
• Methods

Inherits from

• TraitType: enthought.traits.trait_handlers.TraitType

Attributes

• smart_notify

  Call the notifiers smartly only when the value has really changed. If this is set to False, the notification will always occur.

  smart_notify = True
  
  

• trait_type

  Not really necessary but specifies the attribute up front.

  trait_type = None
  
  

Method summary

• __init__(self, trait_type, smart_notify = True, **metadata)
• get(self, object, name)
• set(self, object, name, value)
• validate(self, object, name, value)

Methods

• __init__(self, trait_type, smart_notify = True, **metadata)

  Defines a shadow property trait that is best explained by example:

  class Thing(HasTraits):
      x = ShadowProperty(Float, smart_notify=False)
      def _x_changed(self, value):
          print value
  

  In this example, the actual value of the property (x) will be stored in _x and _x_changed will be called regardless whether the value actually changed or not. If smart_notify is set to True then the handler is called only if the value has actually changed.

  Note that the validation uses the validation of the specified trait_type parameter.

• get(self, object, name)

  Get the value of the trait.

• set(self, object, name, value)

  Set the value of the trait.

• validate(self, object, name, value)

  Validates that a specified value is valid for this trait.