patch for getCellHoverDelay

[senordhuff]

Hi, here is a patch for getCellHoverDelay to ensure that this.getField(colNum) is not null

     if (window.isc &&  (isc.version.startsWith("v12.0")    )){


         isc.ListGrid.getPrototype().addProperties({

             getCellHoverDelay : function (record, rowNum, colNum) {
                 if(this.getField(colNum)!=null){
                     fieldDelay = this.getField(colNum).hoverDelay;
                     if (fieldDelay != null) return fieldDelay;
                 }
                 return this.hoverDelay;
             }
         })

     }

[Isomorphic]

How can you reproduce getting an invalid colNum here? What value do you see when it's invalid?

[senordhuff]

We just have exception handling that keeps catching this issue from our production users. I'm not entirely sure how it is happening but I think it is when we use the column chooser and remove columns and then hit Apply and the cursor is suddenly hovering over a column that has just been removed from view.

[Isomorphic]

We've added a null check for the field to the method as requested back to SC 11.1p, and also a fixed a problem in related logic that resolves a field in the GridBody to a field in the ListGrid. It will be in the nightly builds dated 2019-08-22 and beyond.