drilldownLevels on cleaned up when using addSeriesAsDrilldown

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    • Type: Bug
    • Resolution: Fixed
    • Priority: Normal
    • 7.2.1.1
    • Affects Version/s: 3.0.3
    • Security Level: Jimmy
    • None

      Steps to Reproduce

      same example as ZKCHARTS-80

      drilldown, drillup, drilldown, drillup repeat()

      Current Result

      the collection Charts._drilldownLevels increases in size with every drilldown/drillup iteration (consuming memory)

      Expected Result

      cleanup the drilldown state automatically

      Debug Info

      Root Cause

      the onPlotDrillup event is not fired without a listener leaving the _drilldownLevels not cleaned up

      Workaround

      adding an empty onPlotDrillup listener fixes the problem

            Assignee:
            rudyhuang
            Reporter:
            cor3000
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