fix a bug where exceptions thrown during __setitem__ for an ordered container leaves a bad key in the ordering.

there is a full backward compatibility

Previous BTreeContainer used to store their data in _SampleContainer__data.

    setting an existing item does not change the size,
    and the event subscribers should see the new size instead of the old size.
- Reimplemented the BTreeContainer so that it directly accesses the btree
  methods (removed the #TODO)

    - prevent the namechooser from failing on '+', '@' and '/'
    - added tests in the namechooser
    - be sure the name chooser returns unicode

Substitute zope.app.zapi by direct calls to its wrapped apis. See bug 219302. Also added a test for the CheckDependency function

  ``items``, ``keys``, and ``values`` methods with the same semantics as for
  a BTree object.  The extended interface is implemented by the
  ``BTreeContainer`` class.

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r81655 | philikon | 2007-11-09 20:18:03 +0100 (Fri, 09 Nov 2007) | 6 lines

Send ``IObjectModifiedEvent`` when changing the title through the
``@@contents.html`` view.

This fixes https://bugs.edge.launchpad.net/zope3/+bug/98483.