eu.etaxonomy.taxeditor.navigation/src/main/java/eu/etaxonomy/taxeditor/navigation/NavigatorStateManager.java

   1
   2 package eu.etaxonomy.taxeditor.navigation;
   3
   4 import org.eclipse.core.runtime.IProgressMonitor;
   5 import org.eclipse.ui.IMemento;
   6
   7 import eu.etaxonomy.taxeditor.model.ContextListenerAdapter;
   8 import eu.etaxonomy.taxeditor.navigation.navigator.TaxonNavigator;
   9
  10 /**
  11  * <p>NavigatorStateManager class.</p>
  12  *
  13  * @author n.hoffmann
  14  * @created Apr 1, 2010
  15  * @version 1.0
  16  */
  17 public class NavigatorStateManager extends ContextListenerAdapter {
  18
  19         /**
  20          * {@inheritDoc}
  21          *
  22          * Tries to restore the state of the taxon editor and the navigator when a context starts.
  23          */
  24         @Override
  25         public void contextStart(IMemento memento, IProgressMonitor monitor) {
  26                 TaxonNavigator navigator = NavigationUtil.getNavigator(true);
  27                 if(navigator != null){
  28                         navigator.init();
  29                         navigator.restore(memento, monitor);
  30                 }
  31         }
  32
  33         /* (non-Javadoc)
  34          * @see eu.etaxonomy.taxeditor.model.ContextListenerAdapter#contextRefresh(org.eclipse.core.runtime.IProgressMonitor)
  35          */
  36         @Override
  37         public void contextRefresh(IProgressMonitor monitor) {
  38                 TaxonNavigator navigator = NavigationUtil.getNavigator(true);
  39                 if(navigator != null){
  40                         navigator.refresh();
  41                 }
  42         }
  43
  44         /**
  45          * {@inheritDoc}
  46          *
  47          * If the context
  48          */
  49         @Override
  50         public void contextStop(IMemento memento, IProgressMonitor monitor) {
  51                 saveNavigatorState(memento, monitor);
  52                 clearNavigator();
  53         }
  54
  55         /* (non-Javadoc)
  56          * @see eu.etaxonomy.taxeditor.model.ContextListenerAdapter#workbenchShutdown(org.eclipse.ui.IMemento, org.eclipse.core.runtime.IProgressMonitor)
  57          */
  58         /** {@inheritDoc} */
  59         @Override
  60         public void workbenchShutdown(IMemento memento, IProgressMonitor monitor) {
  61                 saveNavigatorState(memento, monitor);
  62         }
  63
  64         /**
  65          * @param memento
  66          */
  67         private void saveNavigatorState(IMemento memento, IProgressMonitor monitor) {
  68                 TaxonNavigator navigator = NavigationUtil.getNavigator(false);
  69                 if(navigator != null){
  70                         navigator.save(memento, monitor);
  71                 }
  72         }
  73
  74         /**
  75          * Removes all content form the TaxonNavigator
  76          */
  77         private void clearNavigator() {
  78                 TaxonNavigator navigator = NavigationUtil.getNavigator(false);
  79                 if(navigator != null){
  80                         navigator.clear();
  81                 }
  82         }
  83
  84 }