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Created by Mathieu Westphal@mwestphalMaintainer

Selection in ColumnBasedSelection chart with multiple sources behave incorrectly

When selecting a line in a column based selection chart, ParaView behave incorrectly which provide unexpected results.

Steps to reproduce:

  • Run ParaView
  • Load BagPlotAndViewsFilters plugin (only ColumnBasedSelection chart in native paraview)
  • Open sineWaves.csv, Apply
  • Filters -> ExtractBagPlots -> Apply
  • Filters -> PassArray, select only y11, Apply
  • click on ExtractBagPlots in pipeline browser to make it active
  • Filters -> PassArray, select only y12, Apply
  • In a functionnalBagChartView, show only PassArrays1 and PassArrays2
  • in PassArrays1, show y11
  • in PassArrays2, show y12
  • Select ExtractBagPlots as active source in pipeline browser
  • Create an empty selection using rectangle selection
  • PassArrays2 is selected, unexpected
  • Select ExtractBagPlots as active source in pipeline browser
  • Create a selection of y11 using rectangle selection
  • PassArrays2 become active and a y12 appears selected, unexpected
  • in PassArrays2, hide y12
  • repeat selection steps, behavior is the same, still unexpected
  • in Pipelinebroswer, hide PasseArrays2
  • Create an empty selection using rectangle selection
  • PassArrays1 is selected, unexpected
  • Select ExtractBagPlots as active source in pipeline browser
  • Create a selection of y11 using rectangle selection
  • PassArrays1 become active and a y11 appears selected, expected

All this behavior is caused by a "non-selecting" loop in pqContextView::setSelection, where the last representation is considered to be selected, not the actual selected representation. https://gitlab.kitware.com/paraview/paraview/-/blob/master/Qt/Core/pqContextView.cxx#L204

The selection failure of this issue may be related to functionnalBagPlot code specifically, but the active source change is not.

Edited by Mathieu Westphal
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