[Uim-bugs] [Bug 1450] New: context object integration

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https://freedesktop.org/bugzilla/show_bug.cgi?id=1450        
   
           Summary: context object integration
           Product: UIM
           Version: unspecified
          Platform: All
               URL: http://freedesktop.org/pipermail/uim/2004-
                    September/000641.html
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: libuim
        AssignedTo: uim-bugs at freedesktop.org
        ReportedBy: yamaken at bp.iij4u.or.jp


Currently IM programmers are required to deal with the 3 context
objects.

- id
- context
- per-im-context

'id' is used to communicate with C-side APIs such as im-commit
or im-update-preedit.

'context' is used as base object of Scheme-side context. It is
retrieved by (find-context id).

'per-im-context' contains IM-specific data. It is stored in a
'context' and retrieved by (context-data context).

The distinguishment requires IM-implementors tedious context
handling. You might have seen following code.

  (lambda (id mode)
    (let* ((c (find-context id))
           (ac (context-data c)))

Although some reasons to distinguish the objects exist for API
implementor, all 3 context objects semantically mean same 'this
input context' for IM-implementors. So we should show the
context object as unified one for IM-implementors to eliminate
complexity and confusion.

See the URL for further information.        
   
   
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