Source code for enaml.widgets.split_item

#  Copyright (c) 2012, Enthought, Inc.
#  All rights reserved.
from traits.api import Either, Int, Property, cached_property

from .container import Container
from .widget import Widget

[docs]class SplitItem(Widget): """ A widget which can be used as an item in a Splitter. A SplitItem is a widget which can be used as a child of a Splitter widget. It can have at most a single child widget which is an instance of Container. """ #: The preferred size for this item in the splitter, or None if #: there is no preference for the size. The default is None. preferred_size = Either(None, Int) #: A read only property which returns the split widget. split_widget = Property(depends_on='children') #-------------------------------------------------------------------------- # Initialization #--------------------------------------------------------------------------
[docs] def snapshot(self): """ Return the dict of creation attributes for the control. """ snap = super(SplitItem, self).snapshot() snap['preferred_size'] = self.preferred_size return snap
[docs] def bind(self): """ Bind the change handlers for the widget. """ super(SplitItem, self).bind() self.publish_attributes('preferred_size') #-------------------------------------------------------------------------- # Private API #--------------------------------------------------------------------------
@cached_property def _get_split_widget(self): """ The getter for the 'split_widget' property. Returns ------- result : Container or None The split widget for the SplitItem, or None if not provided. """ widget = None for child in self.children: if isinstance(child, Container): widget = child return widget