[Bugs] #4863 Sugar NORM: menu options are responding to mouse button down events with button up events outside menu

[Sugar Labs Bugs]

#4863: menu options are responding to mouse button down events with button up
events outside menu
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       Reporter:  quozl        |       Owner:
           Type:  defect       |      Status:  new
       Priority:  Normal       |   Milestone:  Unspecified
      Component:  Sugar        |     Version:  Git as of bugdate
       Severity:  Unspecified  |    Keywords:
Distribution/OS:  Unspecified  |  Bug Status:  New
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 The industry convention for mouse driven menu options is for them to be
 activated when two conditions are met:
 * a button down event occurs with the pointer inside the option, and;
 * a button up event occurs with the pointer inside the option.

 The latter condition is not being checked in the Sugar menus.

 Reproducer: right-click on the buddy menu, put the pointer over the My
 Settings option, press down on the button, move the pointer out of the
 menu, release the button.

 Expected result: menu is dismissed.

 Observed result: menu is dismissed, and the My Settings option is
 activated.
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Ticket URL: <http://bugs.sugarlabs.org/ticket/4863>
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