[ANN] python-gtkmvc 1.99.1
Roberto Cavada
cavada at fbk.eu
Thu Dec 30 19:31:52 CET 2010
We are proud to announce that version 1.99.1 of pygtkmvc has been
released.
Project homepage:
<http://apps.sourceforge.net/trac/pygtkmvc/wiki>
Download:
<http://sourceforge.net/projects/pygtkmvc/>
==============
About pygtkmvc
==============
pygtkmvc is a fully Python-based implementation of the
Model-View-Controller (MVC) and Observer patterns for the PyGTK2
toolkit.
MVC is a pattern that can be successfully used to design and
develop well structured GUI applications. The MVC pattern
basically helps in separating semantics and data of the
application, from their representation.
The Observer pattern helps to weaken dependencies among parts
that should be separated, but need to be connected each other.
pygtkmvc provides a powerful and still simple infrastructure to
help designing and implement GUI applications based on the MVC
and Observer patterns.
The framework has been designed to be:
* Essential and small, it does only what it was designed for.
* Not an external dependency for your application: it fits in
200KB and can be released along with it.
* Easy to understand and to use; fully documented.
* Portable: straightly runs under many platforms.
License: LGPL
**********************************************************************
* Dec 30 2010 *
**********************************************************************
Released version 1.99.1
This is a release that keeps compatibility with previous version
1.99.0. However, some features provided in 1.99.0 are deprecated
in 1.99.1.
This version goes in the direction of stabilizing the API and
making the code more robust. Many bugs were fixed, and a new,
clean API is now provided for defining notification methods in
observers, and logical observable properties in models.
The documentation has been updated and extended to reflect all
changes, and a complete Library Reference is now
available. Furthermore, the documentation now uses Sphinx instead
of Latex to generate both pdf and html documentation formats.
Last but not the least, the team grew up!
* New
- Models now feature Logical Observable Properties, along with
already supported Concrete Observable Properties.
- In Observers notification methods have all the same
prototype, which make much cleaner the application code.
- New mechanism to declare both dynamically and statically
notification methods in Observers.
- Auto-adapt of FileChooserButton, ComboBox and Adjustment
- API to extend default adapter list
- More widget types now correctly cast when adapted to
unicode/int/float properties.
- Enable RoUserClassAdapter to update the widget. It used to
only do it when connecting, not on property changes. This
makes the built-in support for gtk.Calendar work in both
directions.
- Controller's method adapt() allows auto-adaption even if the
view does not have corresponding widgets for *all* properties
in the model.
- Adapters can optionally call prop_write *instead of* casting
the value from the widget to the type of the old property
value. This was the intended behaviour all along. Default is
still to call it after the cast.
- Decorators for property setters/getters in models. The
methods can now have arbitrary names and you are no longer
limited to one property per method.
* Changed
- Name-based notification methods like
`property_<name>_value_change` are still supported, but their
usage is now discouraged. A new mechanism for declaring
notifications is now available, and you should consider
porting applications accordingly.
- Decorator Observer.observes is now deprecated. A new
mechanism for declaring notifications is now available, and
you should consider porting applications accordingly.
- Support GtkBuilder in addition to libglade, which is no
longer required. This changed the signature of the View
constructor. The two formats are not equivalent, as GTK
cannot build only parts of a file.
- Allow creation of adapters that act on spurious
notifications.
- Use less eval(codestring)
This changed how adapters create
observer functions. If you have adapter subclasses you will
have to adjust them.
- Misuse of the framework that used to exit your application
can now be caught as exceptions.
- Fewer warnings printed by the framework. Remember to increase
the logging level during development.
* Fixed
- Assigning a tuple with length 3 to a property no longer
raises
- Pass the correct model when emitting notifications for an
inherited signal. This changes how all property wrappers
track their owners, but your code should not be affected.
- Wrapped sequences lacked crucial special methods like len and
iter.
- Inspecting wrappers no longer omits the class name.
- Various changes to make SQLObjectModel actually usable.
- Wrapping more than one sequence class could cause the wrong
methods to be called on all but the last instance
created. This did not affect programs that only use the
built-in list type.
- Mutable instances that used to be assigned to properties
would notify of their changes even after being replaced in
the model.
- No more errors from static container adapters you didn't
create.
- Multiple concurrent iterators on views no longer steal each
other widgets.
Many thanks to Christian Spoer for narrowing down a bug and to
Tobias Weber for joining the team.
--
Roberto Cavada
<P><A HREF="http://pygtkmvc.sourceforge.net">pygtkmvc 1.99.1</A> -
Pygtk MVC is a thin, multiplatform framework that helps to design
and develop GUI applications based on the PyGTK toolkit. (30-Dec-10)
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