Wednesday, November 28, 2012

CellTable - how to avoid unnecessary onRangeChange events?


I found that my CellTable sends unnecessary onRangeChange events in a specific situation:

- The data source changes, e. g. the user selects another chat room.
- The new row count is less than the old one.

Then, when calling the data provider's updateRowCount method the GWT code recognizes that the current range exceeds the row count and corrects the range somhow, triggering an onRangeChange event.
Independend of this, the application also as an idea which records to show and also sets the new range.

In the end, the page is loaded twice. Can we avoid this?


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