[Bugs] #1493 UNSP: Keep preferable activities

[Sugar Labs Bugs]

#1493: Keep preferable activities
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    Reporter:  alsroot                    |          Owner:  tomeu      
        Type:  enhancement                |         Status:  new        
    Priority:  Unspecified by Maintainer  |      Milestone:  0.88       
   Component:  sugar                      |        Version:  0.86.x     
    Severity:  Unspecified                |       Keywords:  r!         
Distribution:  Unspecified                |   Status_field:  Unconfirmed
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Comment(by wadeb):

 From looking at the patch, what happens is:

 1. You download the first PDF file and open it using a random activity,
 say SweetPDFReader.
 2. Further PDF files you download are then opened using SweetPDFReader by
 default.
 3. You right click on a PDF file you downloaded and open with Read.
 4. Further PDF files you download are then opened using Read by default.

 Essentially, it tracks the most recent "Open With" choice for MIME objects
 - objects downloaded from Browse, copied from a USB key, or added using
 copy-to-journal - and makes that choice the default.

 Without this patch, it seems like Sugar makes an arbitrary choice when
 choosing which activity to open a MIME (non-Activity instance) Journal
 object.

 I for one like the addition of mimeregistry.py; it makes sense to me to
 collect all information regarding Sugar's handling of MIME objects (vs.
 Activity instance objects) in one place.

-- 
Ticket URL: <http://bugs.sugarlabs.org/ticket/1493#comment:4>
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