The following classes have been implemented; some methods and functions have not been implemented due to dependencies on unimplemented classes, but the classes below are otherwise complete:
From the Application Kit: From the Interface Kit: From the Storage Kit: From the Support Kit: Application Clipboard Cursor Handler Invoker Looper Message Messenger Alert Box Button CheckBox ColorControl Control Font Menu ListItem ListView MenuBar MenuField MenuItem OutlineListView Picture PictureButton Point Polygon PopUpMenu RadioButton Rect Screen ScrollBar ScrollView SeparatorItem Shape Slider StatusBar StringItem StringView TabView TextControl TextView View Window Entry EntryList FindDirectory* Mime MimeType Node NodeInfo NodeMonitor* Path Query Statable Volume VolumeRoster Archivable Beep* Errors* TypeConstants* *These don’t actually contains any classes, Errors and TypeConstants expose constants; Beep exposes functions; FindDirectory and NodeMonitor expose constants and functions.
The following classes are now mostly implemented; there are some methods that cannot be implemented yet because they require objects that are not yet implemented, but otherwise these classes are complete.
From the Application Kit: From the Interface Kit: From the Support Kit: Application
A status update for those interested:
Bindings now return multiple values when appropriate (this was not working before).
Bindings now return undef (in Perl) or None (in Python) for a NULL object pointer; previously a target language object with an underlying NULL was returned, which obviously caused problems.
For errors, Perl returns undef and sets an error variable. Python raises an exception. However, when the status code is also the return value, Perl returns true if there is no error.
The following objects have at least partial bindings:
From the Application Kit: From the Interface Kit: From the Support Kit: Application Clipboard Cursor Handler Invoker Looper Message Alert Box Button Control Font Menu MenuBar MenuField MenuItem Point PopUpMenu Rect Screen StringView TextControl TextView View Window Archivable At the moment, some of the classes are not very usable; they’re necessary because other objects inherit from them.
I’ve just uploaded some files onto http://dev.osdrawer.net/projects/perl-haiku-kits/files They are minimal implementations (window with a button) for Perl and Python. The Perl one works fine, but I’m still having issues with the Python.
Here are some of the issues with Python:
Apparently by convention packages start with a lower-case letter. The bindings are currently in the ‘Haiku’ package. This would be a trivial change; it depends on how important it is to Haiku’s Python user community.
During the first quarter, I defined an interface language to use for creating the bindings. I had to create my own for several reasons. Probably the biggest factor was the need to know whether the target language has the right to destroy an object. Most of the target languages has some kind of automatic garbage collection; the programmer never needs to worry about whether to delete an object to free up memory.
In my last blog post, I mentioned the following goals:
Define an interface definition language Define preliminary bindings for a minimal test programy Write a preliminary generator to create the bindings Write the minimal test program These have now been achieved, and the minimal test program (in Perl) runs. It shows a window with a button, and the button label changes when the button is clicked.
It still has problems, of course.
During the bonding period I looked into Python’s extension tools; they seem to be straightforward and at first glance look relatively easy, so Python is definitely an option. I asked on the mailing list what other languages people were using on Haiku, and Neil kindly made a poll based on the results. Depending on the popularity of the language (based on the poll results) and the ease of writing extensions, I will make a final decision on which langauges to target during GSoC.
During most of GSoC, I will be in Faro, Portugal, where I am finishing my Masters. However, I will travel to Santa Rosa, California to visit family for five weeks in June and July.
Time Zones: Mon 25 Apr - Thu 16 Jun: Western European Summer Time (UTC+1) Fri 17 Jun - Thu 21 Jul: Pacific Daylight Time (UTC-7) Fri 22 Jul - Fri 26 Aug: Western European Summer Time (UTC+1)
My project will expose the Haiku API to scripting languages. During GSoC, I will focus on enabling the creation of GUI apps; this will include large parts of the Interface Kit and some essential classes from the Application Kit. I will target Perl and Python as the scripting languages.
(After GSoC, I would like to support other languages as well, and increase the number of classes available from scripting languages.