[GitHub] zeppelin issue #979: Alert message when trying to delete last paragraph.

[corneadoug]

Github user corneadoug commented on the issue:

    https://github.com/apache/zeppelin/pull/979
  
    I would like to suggest a different approach:
    Not showing the delete button if the paragraph is the last one.
    
    It is also quite easy to do:
    Just need to add `ng-hide="$last"` to the remove link in 
paragraph-control.html
    
    <img width="439" alt="screen shot 2016-06-10 at 3 43 12 pm" 
src="https://cloud.githubusercontent.com/assets/710411/15956251/291a9b92-2f22-11e6-8b35-25e9aa662e7c.png";>
    
    Since angular has both `$first` and `$last`, we could even remove 'Move Up' 
or 'Move Down' option depending on whether the paragraph is the first or the 
last.


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