Components should truncate long text

[jvalkeal]

Components context is not aware of a terminal width so it's not possible to truncate long text to do something like:

? testSimple [Use arrows to move], type to filter      
> key1                                                   
  key2                                                   
  key3 long long long long long                          
  key4 long long long long long long long long long l..

text spanning into next row in shell really mess things up.