eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/view/datasource/handler/AbstractDataSourceHandler.java

   1 /**
   2 * Copyright (C) 2007 EDIT
   3 * European Distributed Institute of Taxonomy
   4 * http://www.e-taxonomy.eu
   5 *
   6 * The contents of this file are subject to the Mozilla Public License Version 1.1
   7 * See LICENSE.TXT at the top of this package for the full license terms.
   8 */
   9
  10 package eu.etaxonomy.taxeditor.view.datasource.handler;
  11
  12 import org.eclipse.core.commands.AbstractHandler;
  13 import org.eclipse.core.commands.ExecutionEvent;
  14 import org.eclipse.core.commands.ExecutionException;
  15 import org.eclipse.jface.viewers.ISelection;
  16 import org.eclipse.jface.viewers.StructuredSelection;
  17 import org.eclipse.ui.handlers.HandlerUtil;
  18
  19 import eu.etaxonomy.taxeditor.store.StoreUtil;
  20 import eu.etaxonomy.taxeditor.view.datasource.CdmDataSourceViewPart;
  21 import eu.etaxonomy.taxeditor.view.datasource.CdmMetaDataAwareDataSourceContainer;
  22
  23 /**
  24  * @author n.hoffmann
  25  * @created 19.05.2009
  26  * @version 1.0
  27  */
  28 abstract class AbstractDataSourceHandler extends AbstractHandler {
  29
  30         /* (non-Javadoc)
  31          * @see org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.ExecutionEvent)
  32          */
  33         /** {@inheritDoc} */
  34         public Object execute(ExecutionEvent event) throws ExecutionException {
  35
  36                 boolean refresh = specificExecute(event);
  37
  38                 CdmDataSourceViewPart view = (CdmDataSourceViewPart) StoreUtil.showView(CdmDataSourceViewPart.ID);
  39                 if(refresh) view.refresh();
  40
  41                 return null;
  42         }
  43
  44         /**
  45          * <p>getSelectedDataSourceContainer</p>
  46          *
  47          * @param event a {@link org.eclipse.core.commands.ExecutionEvent} object.
  48          * @return a {@link eu.etaxonomy.taxeditor.view.datasource.CdmMetaDataAwareDataSourceContainer} object.
  49          */
  50         protected CdmMetaDataAwareDataSourceContainer getSelectedDataSourceContainer(ExecutionEvent event){
  51                 ISelection menuSelection = HandlerUtil.getCurrentSelection(event);
  52                 CdmMetaDataAwareDataSourceContainer container = (CdmMetaDataAwareDataSourceContainer) ((StructuredSelection) menuSelection).getFirstElement();
  53                 return container;
  54         }
  55
  56         /**
  57          * <p>specificExecute</p>
  58          *
  59          * @param event a {@link org.eclipse.core.commands.ExecutionEvent} object.
  60          * @return a boolean.
  61          */
  62         public abstract boolean specificExecute(ExecutionEvent event);
  63 }