Wt

Using the nice new Wt 3.3.5 RC2, I encountered a bug, probably in the very nice and new interactive Wt::Chart::WCartesianChart section. (So in the javascript part, it seems)

I can reproduce the bug when I have enabled at least one of the interactive features, like Zoom, pan, the rubberband effect and the crosshair

and

my WCartesianChart will be updated with new data (although I didn't managed to locate particular part of the update which triggers the faulty JS part on the client, yet).

But my primary suspect is, when the diagrams model changes in a severe manner, like in my case, when it makes the following transitions:

- starts empty (headercount 0 , row count 0 (and also column count 0)

• gets data (so row count >0)
• empties data (so row count 0)
  
• get data again (row count >0) ---> BOOM

The bug does not occur, when only the header/column data makes this transition, also title changes aren't a problem.

Tested with Firefox 32.0, InternetExplorer 11 and Google Chrome 47.

I attached the log and also a minidump, taken at the moment, when Wt streamed the javascript error into WLogger.