[Chameleon-dev] [Bug 1823] New: ROI tools: cannot make another after DeregisterEvent

[bugzilla-daemon at bugzilla.maptools.org]

http://bugzilla.maptools.org/show_bug.cgi?id=1823

           Summary: ROI tools: cannot make another after DeregisterEvent
           Product: Chameleon
           Version: 2.4
          Platform: PC
        OS/Version: Windows 2000
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Widget
        AssignedTo: chameleon-dev at lists.maptools.org
        ReportedBy: benftee at gmail.com


I found that after calling CWCROIManager->roi has no props, I could not create
another ROI. There was a javascript error: "roi has no properties"

Found a fix. In cwc_roi.js, there is an array called this.events, each element
of which is an array of codes to execute when the event is triggered

But, function DeregisterEvent clobbers the whole array:empty array:
this.events[i] = "";
...this causes a crash when an attempt is made to fetch the event

instead of blanking just the sub-array element, like this:
this.events[event][i] = "";//FIXES IT



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