One of the goals for Evolution 2.24  was to remove GtkHTML's dependency on Bonobo. This effort has been underway for several months now and involved extensive changes to Evolution's message composer.
Today we finally committed these changes to Evolution and GtkHTML, which will be released later this month as Evolution 2.23.1 and GtkHTML 3.19.1. If you're inclined to run our unstable releases, or even build the latest Evolution code yourself from Subversion, we could really use some help from the community in regression testing all things related to sending or composing email in Evolution. I want to make sure the new message composer is rock solid in time for Evolution 2.24. If you do spot any regressions, please file a bug report in Bugzilla or catch me on the #evolution IRC channel on GimpNet (my nick is mbarnes) or even email me directly ([EMAIL PROTECTED]). KNOWN PROBLEMS -------------- There is one regression we're aware of already. Many composer-related plugins are temporarily broken. Known broken plugins include Face, and parts of Exchange Operations and Groupwise Features. The problem is basically that our plugin framework has not yet learned the more modern way to extend menus and toolbars (via GtkUIManager). Most of Evolution still relies on libbonoboui for this. We plan to have this fixed before Evolution 2.23.2. TECHNICAL DETAILS ----------------- To help clarify what exactly has and has not changed, let me briefly touch on the architecture of Evolution's message composer. The composer consists of three layers, two of which reside in the GtkHTML package. - Core rendering engine This innermost layer is the widget that renders your email messages in Evolution and is also the area where you type the body of your message in Evolution's composer window. It lives in GtkHTML. This layer has not changed at all. - HTML editor This layer wraps the rendering engine in a window and adds the menus and toolbars to form a general-purpose HTML editor. It also handles spell checking, pop-up menus, and all of the "properties" dialogs. It too lives in GtkHTML. This layer has been rewritten from scratch. Whereas the previous editor was written as a Bonobo component (requiring a Bonobo activation server to communicate with Evolution), the new editor is just a straight-forward widget that can be subclassed and extended by other applications. - Email composer This layer does just that: subclasses and extends the HTML editor with features specific to composing and sending email. This layer adds fields like "To", "From", and "Subject" to the editor, deals with character encodings, and manages attachments and security settings. Obviously, this piece lives in Evolution. While not rewritten from scratch, this layer has been modified extensively to adapt to the new HTML editor widget. Other places around Evolution that deal with composing or sending messages, such as meeting invitations and the "Send Message to Contact" feature, have been adapted accordingly. Matthew Barnes  http://www.go-evolution.org/Evo2.24 _______________________________________________ Evolution-hackers mailing list Evolutionfirstname.lastname@example.org http://mail.gnome.org/mailman/listinfo/evolution-hackers