#3060 HIGH 9.1.0: Support selection criteria for pre-filtering the object chooser

[Zarro Boogs per Child]

#3060: Support selection criteria for pre-filtering the object chooser
--------------------------------+-------------------------------------------
   Reporter:  uwog              |       Owner:  tomeu  
       Type:  enhancement       |      Status:  new    
   Priority:  high              |   Milestone:  9.1.0  
  Component:  journal-activity  |     Version:         
 Resolution:                    |    Keywords:  9.1.0:+
Next_action:  never set         |    Verified:  0      
  Blockedby:                    |    Blocking:         
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Changes (by bert):

  * next_action:  => never set


Comment:

 I'd add a query parameter exactly like supported in journal.FocusSearch()
 and the underlying datastore.find(). This includes the filtering by mime
 types but is much more flexible than that.

 Adding this query should be almost trivial and does not necessitate any UI
 changes. A title parameter as suggested by Eben could be added at the same
 time even though it would be unused initially.

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Ticket URL: <http://dev.laptop.org/ticket/3060#comment:12>
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