[udig-devel] Layers view error/hack

[Vince Darley]

I get an error on starting up my application (which builds on uDig 
SDK rc9), here at the 'HACK' line:

     if(selectedLayer != null && getSite()!=null &&
            getSite().getSelectionProvider()!=null ){
            getSite().getSelectionProvider().setSelection(new 
StructuredSelection(selectedLayer));
     }else{
           // HACK this makes the ContentModelItemProvider be added 
to the ContextModel
           getSite().getSelectionProvider().setSelection(new 
StructuredSelection());
     }

What's the purpose of this?  Seems with the 'null' checks the failed 
line is going to always throw an error unless selectedLayer is the 
only null thing.

Vince.

Full stack trace below:

java.lang.NullPointerException
         at 
net.refractions.udig.project.ui.internal.LayersView.setCurrentMap(LayersView.java:243)
         at 
net.refractions.udig.project.ui.internal.LayersView.createPartControl(LayersView.java:567)
         at 
org.eclipse.ui.internal.ViewReference.createPartHelper(ViewReference.java:332)
         at 
org.eclipse.ui.internal.ViewReference.createPart(ViewReference.java:197)
         at 
org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:566)
         at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:290)
         at org.eclipse.ui.internal.ViewPane.setVisible(ViewPane.java:525)
         at 
org.eclipse.ui.internal.presentations.PresentablePart.setVisible(PresentablePart.java:140)
         at 
org.eclipse.ui.internal.presentations.util.PresentablePartFolder.select(PresentablePartFolder.java:268)
         at 
org.eclipse.ui.internal.presentations.util.LeftToRightTabOrder.select(LeftToRightTabOrder.java:65)
         at 
org.eclipse.ui.internal.presentations.util.TabbedStackPresentation.selectPart(TabbedStackPresentation.java:394)
         at 
org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.java:1144)
         at org.eclipse.ui.internal.PartStack.createControl(PartStack.java:620)
         at org.eclipse.ui.internal.PartStack.createControl(PartStack.java:532)
         at 
org.eclipse.ui.internal.PartSashContainer.createControl(PartSashContainer.java:562)
         at 
org.eclipse.ui.internal.PerspectiveHelper.activate(PerspectiveHelper.java:244)
         at 
org.eclipse.ui.internal.Perspective.onActivate(Perspective.java:815)
         at 
org.eclipse.ui.internal.WorkbenchPage.setPerspective(WorkbenchPage.java:3284)
         at 
org.eclipse.ui.internal.WorkbenchPage.busySetPerspective(WorkbenchPage.java:957)
         at 
org.eclipse.ui.internal.WorkbenchPage.access$12(WorkbenchPage.java:941)
         at 
org.eclipse.ui.internal.WorkbenchPage$12.run(WorkbenchPage.java:3408)
         at 
org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:67)
         at 
org.eclipse.ui.internal.WorkbenchPage.setPerspective(WorkbenchPage.java:3406)
         at 
org.eclipse.ui.internal.PerspectiveBarContributionItem.select(PerspectiveBarContributionItem.java:123)
         at 
org.eclipse.ui.internal.PerspectiveBarContributionItem$1.widgetSelected(PerspectiveBarContributionItem.java:92)
         at 
org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:90)
         at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
         at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:928)
         at 
org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3348)
         at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2968)
         at org.eclipse.jface.window.Window.runEventLoop(Window.java:820)
         at org.eclipse.jface.window.Window.open(Window.java:796)
         at 
org.eclipse.pde.internal.runtime.logview.EventDetailsDialog.open(EventDetailsDialog.java:183)
         at 
org.eclipse.pde.internal.runtime.logview.EventDetailsDialogAction.run(EventDetailsDialogAction.java:91)
         at 
org.eclipse.pde.internal.runtime.logview.LogView$13.doubleClick(LogView.java:403)
         at 
org.eclipse.jface.viewers.StructuredViewer$1.run(StructuredViewer.java:796)
         at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
         at org.eclipse.core.runtime.Platform.run(Platform.java:843)
         at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:44)
         at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:149)
         at 
org.eclipse.jface.viewers.StructuredViewer.fireDoubleClick(StructuredViewer.java:794)
         at 
org.eclipse.jface.viewers.AbstractTreeViewer.handleDoubleSelect(AbstractTreeViewer.java:1227)
         at 
org.eclipse.jface.viewers.StructuredViewer$4.widgetDefaultSelected(StructuredViewer.java:1158)
         at 
org.eclipse.jface.util.OpenStrategy.fireDefaultSelectionEvent(OpenStrategy.java:223)
         at org.eclipse.jface.util.OpenStrategy.access$0(OpenStrategy.java:220)
         at 
org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:281)
         at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
         at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:928)
         at 
org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3348)
         at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2968)
         at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1914)
         at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1878)
         at 
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:419)
         at 
org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
         at 
com.eurobios.waste.rcp.ui.WasteApplication.run(WasteApplication.java:26)
         at 
org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:78)
         at 
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:92)
         at 
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:68)
         at 
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)
         at 
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:177)
         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
         at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
         at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
         at java.lang.reflect.Method.invoke(Unknown Source)
         at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336)
         at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
         at org.eclipse.core.launcher.Main.run(Main.java:977)
         at org.eclipse.core.launcher.Main.main(Main.java:952)

Vince Darley
CEO, Eurobios UK Ltd
Tel: +44 207 921 0445
Mobile: +44 794 154 8527
www.eurobios.com