Hi Larry, this is the code in my plug in:

  public void initialize(PlugInContext context) throws Exception {
 c = context;
    workbenchContext = context.getWorkbenchContext();
    context.getFeatureInstaller().addMainMenuItem(this, new String[]
{"Tools", "FeatureMatching" }, getName(), false, null,
this.createEnableCheck(workbenchContext));
     //selectionManager = context.getLayerViewPanel().getSelectionManager();

  }


...


  private void updateUIForAction(ActionEvent e) {

 if("next".equals(e.getActionCommand()) && load ){
 if(prev){
 prev = false;
 reliability = String.valueOf(f.getAttribute("RELIABILITY"));
 classSelection(f);
 fcNew.add(f);

 }
 else{
 fprev = f;
 f = (Feature)it.next();
 reliability = String.valueOf(f.getAttribute("RELIABILITY"));
 classSelection(f);
          fcNew.add(f);
 }
 selectionManager.clear();
 c.getLayerViewPanel().getSelectionManager().getFeaturesWithSelectedItems();
 System.out.println(selectionManager.getFeaturesWithSelectedItems
(layer).toString());
 
c.getLayerViewPanel().getSelectionManager().getFeatureSelection().selectItems(layer,
f);
 try {
myZoom.execute(c); // myZoom is an object of type: ZoomToSelectedItems
} catch (Exception e1){}
 bPrev.setEnabled(!prev);
 }
 if("prev".equals(e.getActionCommand()) && load){
 prev = true;
 reliability = String.valueOf(fprev.getAttribute("RELIABILITY"));
 fcNew.remove(f);
 System.out.println(c.getLayerViewPanel
().getSelectionManager().getFeatureSelection().toString());
 
c.getLayerViewPanel().getSelectionManager().getFeatureSelection().selectItems(layer,
fprev);
 try {
myZoom.execute(c);
} catch (Exception e1) {}
 bPrev.setEnabled(!prev);
}

and here the exception:


Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
        at featureMatching.ClassificationPlugIn.updateUIForAction(
ClassificationPlugIn.java:206)
        at featureMatching.ClassificationPlugIn.access$1(
ClassificationPlugIn.java:182)
        at
featureMatching.ClassificationPlugIn$MethodActionListener.actionPerformed(
ClassificationPlugIn.java:244)
        at javax.swing.AbstractButton.fireActionPerformed(
AbstractButton.java:1882)
        at javax.swing.AbstractButton$Handler.actionPerformed(
AbstractButton.java:2202)
        at javax.swing.DefaultButtonModel.fireActionPerformed(
DefaultButtonModel.java:420)
        at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java
:258)
        at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(
BasicButtonListener.java:236)
        at java.awt.AWTEventMulticaster.mouseReleased(
AWTEventMulticaster.java:231)
        at java.awt.Component.processMouseEvent(Component.java:5583)
        at javax.swing.JComponent.processMouseEvent(JComponent.java:3135)
        at java.awt.Component.processEvent(Component.java:5348)
        at java.awt.Container.processEvent(Container.java:2010)
        at java.awt.Component.dispatchEventImpl(Component.java:4050)
        at java.awt.Container.dispatchEventImpl(Container.java:2068)
        at java.awt.Component.dispatchEvent(Component.java:3885)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java
:4256)
        at java.awt.LightweightDispatcher.processMouseEvent(Container.java
:3936)
        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3866)
        at java.awt.Container.dispatchEventImpl(Container.java:2054)
        at java.awt.Window.dispatchEventImpl(Window.java:1791)
        at java.awt.Component.dispatchEvent(Component.java:3885)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
        at java.awt.EventDispatchThread.pumpOneEventForHierarchy(
EventDispatchThread.java:269)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(
EventDispatchThread.java:190)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(
EventDispatchThread.java:180)
        at java.awt.Dialog$1.run(Dialog.java:535)
        at java.awt.Dialog$2.run(Dialog.java:563)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.awt.Dialog.show(Dialog.java:561)
        at java.awt.Component.show(Component.java:1302)
        at java.awt.Component.setVisible(Component.java:1255)
        at com.vividsolutions.jump.workbench.ui.MultiInputDialog.setVisible(
MultiInputDialog.java:178)
        at featureMatching.ClassificationPlugIn.execute(
ClassificationPlugIn.java:98)
        at
com.vividsolutions.jump.workbench.plugin.AbstractPlugIn$1.actionPerformed(
AbstractPlugIn.java:130)
        at javax.swing.AbstractButton.fireActionPerformed(
AbstractButton.java:1882)
        at javax.swing.AbstractButton$Handler.actionPerformed(
AbstractButton.java:2202)
        at javax.swing.DefaultButtonModel.fireActionPerformed(
DefaultButtonModel.java:420)
        at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java
:258)
        at javax.swing.AbstractButton.doClick(AbstractButton.java:334)
        at apple.laf.ScreenMenuItem.actionPerformed(ScreenMenuItem.java:104)
        at java.awt.MenuItem.processActionEvent(MenuItem.java:597)
        at java.awt.MenuItem.processEvent(MenuItem.java:556)
        at java.awt.MenuComponent.dispatchEventImpl(MenuComponent.java:298)
        at java.awt.MenuComponent.dispatchEvent(MenuComponent.java:286)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:466)
        at java.awt.EventDispatchThread.pumpOneEventForHierarchy(
EventDispatchThread.java:269)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(
EventDispatchThread.java:190)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java
:184)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java
:176)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)

regards,

Diego

On Feb 4, 2008 3:16 PM, Larry Becker <[EMAIL PROTECTED]> wrote:

> Hi Diego,
>
>  Sounds like something is corrupt or you haven't initialized your
> plugin properly.  We can give more specific hints if you post more
> code and include the entire exception trace.
>
> regards,
>
> Larry Becker
>
> On Feb 4, 2008 7:28 AM, Diego Tosato <[EMAIL PROTECTED]> wrote:
> > Ok, I've already looked into these ones but the solution is hard to find
> > out. I've isolated the problem on the object: SelectionManager. It is
> always
> > "null". In particular the command
> >
> >  context.getLayerViewPanel().getSelectionManager()
> >
> > returns null every time (exception).
> >  I'm working on a solution but  I don't know how to use a
> SelectionManager.
> >
> > Diego
> >
> >
> >
> >
> >
> > On Feb 1, 2008 3:01 PM, Stefan Steiniger <[EMAIL PROTECTED]> wrote:
> > > mhm.. don't know what to do (i have no idea about graphic stuff and
> > > threading).
> > > but what you could do is to look into the code of one of these plugins
> > > (especially the last one):
> > >
> > > com.vividsolutions.jump.workbench.ui.zoom.ZoomBarPlugIn
> > > com.vividsolutions.jump.workbench.ui.zoom.ZoomNextPlugIn
> > > com.vividsolutions.jump.workbench.ui.zoom.ZoomPreviousPlugIn
> > > com.vividsolutions.jump.workbench.ui.zoom.ZoomToClickPlugIn
> > > com.vividsolutions.jump.workbench.ui.zoom.ZoomToCoordinatePlugIn
> > > com.vividsolutions.jump.workbench.ui.zoom.ZoomToFencePlugIn
> > > com.vividsolutions.jump.workbench.ui.zoom.ZoomToFullExtentPlugIn
> > > com.vividsolutions.jump.workbench.ui.zoom.ZoomToLayerPlugIn
> > >
> > > stefan
> > >
> > > Diego Tosato schrieb:
> > >
> > > > Thanks Stefan, i have followed your suggestion but the problem is
> not
> > > > solved. Because I have the following exception:
> > > >
> > > >     Exception in thread "AWT-EventQueue-0"
> > java.lang.NullPointerException
> > > >
> > > >
> > > > This is my function in the  plug in:
> > > >
> > > >       private void updateUIForAction(ActionEvent e) {
> > > >
> > > >         ...
> > > >
> > > >
> > c.getLayerViewPanel
> ().getSelectionManager().getFeatureSelection().selectItems(layer,f,(Collection)layer.getFeatureCollectionWrapper());
> > > >         try {
> > > >         myZoom.execute(c);
> > > >         } catch (Exception e) {}
> > > >
> > > > where c is a reference to context (c = context;) and f is a Feature.
> > > >
> > > > bye
> > > > Diego
> > > >
> > > > On Jan 31, 2008 7:24 PM, Stefan Steiniger <[EMAIL PROTECTED]
> > >
> > >
> > >
> > > > <mailto:[EMAIL PROTECTED]>> wrote:
> > > >
> > > >     Hei,
> > > >
> > > >     you can use:
> > > >
> > > >     private ZoomToSelectedItemsPlugIn myZoom = new
> > > >                            ZoomToSelectedItemsPlugIn();
> > > >     myZoom.execute(context);
> > > >
> > > >     (where context is the PluginContext given in the Plugin
> execute()
> > > >     method)
> > > >
> > > >     but you need first to clean the current selection and add your
> > object
> > > >     that you want to zoom to.
> > > >     such as:
> > > >
> > context.getLayerViewPanel
> ().getSelectionManager().getFeatureSelection().selectItems(actualLayer,
> > > >
> > > >     features);
> > > >
> > > >     with Collection features and Layer actualLayer
> > > >
> > > >     hope that helps
> > > >     stefan
> > > >
> > > >     Diego Tosato schrieb:
> > > >      > Hi, I'm working on a new plug in  for openJUMP v1.2 D on
> Eclipse
> > > >     3.3.1.1 <http://3.3.1.1>
> > > >      > <http://3.3.1.1>. I' ve a problem: I want to zooming on a
> > specific
> > > >      > feature. I've tried to use this function:
> > > >      >
> > > >      >     zoomToSelectedItemsPlugIn.zoom(
> > > >      >     FeatureUtil.toGeometries(features),
> > > >      >     taskFrame.getLayerViewPanel());
> > > >      >
> > > >      >
> > > >      > in a block try-catch but it doesn't work. In particular I've
> no
> > > >      > understood what is the object "taskFrame".
> > > >      > Maybe is it too simple draw a feature in a separated
> interface?
> > > >      > Can anyone give me an alternative solution?
> > > >      >
> > > >      > Diego
> > > >      >
> > > >      > --
> > > >      >
> > ******************************************************************
> > > >      > Diego Tosato
> > > >      > Sito Personale: http://p0ll0.altervista.org/
> > > >      >
> > ******************************************************************
> > > >      >
> > > >      >
> > > >      >
> > > >
> > ------------------------------------------------------------------------
> > > >      >
> > > >      > _______________________________________________
> > > >      > jump-users mailing list
> > > >      > [email protected]
> > > >     <mailto:[email protected]>
> > >
> > > >      > http://lists.refractions.net/mailman/listinfo/jump-users
> > > >
> > > >     _______________________________________________
> > > >     jump-users mailing list
> > > >     [email protected]
> > > >     <mailto:[email protected]>
> > >
> > >
> > >
> > > >     http://lists.refractions.net/mailman/listinfo/jump-users
> > > >
> > > >
> > > >
> > > >
> > > > --
> > > > ******************************************************************
> > > > Diego Tosato
> > > > Sito Personale: http://p0ll0.altervista.org/
> > > > ******************************************************************
> > > >
> > > >
> > > >
> ------------------------------------------------------------------------
> > > >
> > > > _______________________________________________
> > > > jump-users mailing list
> > > > [email protected]
> > > > http://lists.refractions.net/mailman/listinfo/jump-users
> > > _______________________________________________
> > > jump-users mailing list
> > > [email protected]
> > > http://lists.refractions.net/mailman/listinfo/jump-users
> > >
> >
> >
> >
> > --
> >
> > ******************************************************************
> > Diego Tosato
> > Sito Personale: http://p0ll0.altervista.org/
> >  ******************************************************************
> > _______________________________________________
> > jump-users mailing list
> > [email protected]
> > http://lists.refractions.net/mailman/listinfo/jump-users
> >
> >
>
>
>
> --
> http://amusingprogrammer.blogspot.com/
> _______________________________________________
> jump-users mailing list
> [email protected]
> http://lists.refractions.net/mailman/listinfo/jump-users
>



-- 
******************************************************************
Diego Tosato
Sito Personale: http://p0ll0.altervista.org/
******************************************************************
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