Source code for zope.app.tree.browser

##############################################################################
#
# Copyright (c) 2004 Zope Corporation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
#
##############################################################################
"""Browser views

"""
__docformat__ = 'restructuredtext'

import zope.component
from zope.publisher.interfaces.browser import IBrowserRequest
from zope.publisher.browser import BrowserView

from zope.app.tree.interfaces import ITreeStateEncoder
from zope.app.tree.node import Node


[docs]class IStaticTreeLayer(IBrowserRequest): """Layer that we can register our own navigation macro for."""
try: # we try not to depend on zope.app.rotterdam hardly from zope.app.rotterdam import Rotterdam class IStaticTreeSkin(IStaticTreeLayer, Rotterdam): """Skin based on Rotterdam that includes the static tree navigation macro.""" except ImportError: # pragma: no cover pass
[docs]class StatefulTreeView(BrowserView): """ Basic stateful tree. """
[docs] def statefulTree(self, root=None, filter=None, tree_state=None): """Build a tree with tree state information from a request. """ if root is None: root = self.context expanded_nodes = [] if tree_state is not None: encoder = zope.component.getUtility(ITreeStateEncoder) expanded_nodes = encoder.decodeTreeState(tree_state) node = Node(root, expanded_nodes, filter) node.expand() return node