[Bugs] #2734 UNSP: Log activity should not update search results every keystroke

[Sugar Labs Bugs]

#2734: Log activity should not update search results every keystroke
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    Reporter:  greenfeld                  |          Owner:  wadeb                      
        Type:  defect                     |         Status:  new                        
    Priority:  Unspecified by Maintainer  |      Milestone:  Unspecified by Release Team
   Component:  Log                        |        Version:  0.92.x                     
    Severity:  Minor                      |       Keywords:                             
Status_field:  Unconfirmed                |   Distribution:  OLPC                       
   Seeta_dev:                             |  
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 Searching a log file using the Search toolbar up top updates the result
 every keystroke.  The updates also highlight every example found in the
 text of the current value of the search bar (even if a single letter), and
 may shift the text side-to-side to show the results if word wrap is
 disabled.

 This can make it very painful to use on an XO-1 with large log files such
 as shell.log with Sugar and debug logging enabled.

 To borrow what seems to be a common (but not necessarily the most user
 obvious?) Sugar search box approach, we likely should return new search
 results in Log only when the <Enter> key is pressed, and somehow indicate
 when no results are returned as well.

 Seen in OLPC 11.2.0 os14.

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Ticket URL: <http://bugs.sugarlabs.org/ticket/2734>
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