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

   1 // $Id$
   2 /**
   3 * Copyright (C) 2007 EDIT
   4 * European Distributed Institute of Taxonomy
   5 * http://www.e-taxonomy.eu
   6 *
   7 * The contents of this file are subject to the Mozilla Public License Version 1.1
   8 * See LICENSE.TXT at the top of this package for the full license terms.
   9 */
  10
  11 package eu.etaxonomy.taxeditor.view.datasource.handler;
  12
  13 import org.eclipse.core.commands.AbstractHandler;
  14 import org.eclipse.core.commands.ExecutionEvent;
  15 import org.eclipse.core.commands.ExecutionException;
  16 import org.eclipse.jface.viewers.ISelection;
  17 import org.eclipse.jface.viewers.StructuredSelection;
  18 import org.eclipse.ui.handlers.HandlerUtil;
  19
  20 import eu.etaxonomy.taxeditor.store.StoreUtil;
  21 import eu.etaxonomy.taxeditor.view.datasource.CdmDataSourceViewPart;
  22 import eu.etaxonomy.taxeditor.view.datasource.CdmMetaDataAwareDataSourceContainer;
  23
  24 /**
  25  * @author n.hoffmann
  26  * @created 19.05.2009
  27  * @version 1.0
  28  */
  29 abstract class AbstractDataSourceHandler extends AbstractHandler {
  30
  31         /* (non-Javadoc)
  32          * @see org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.ExecutionEvent)
  33          */
  34         /** {@inheritDoc} */
  35         public Object execute(ExecutionEvent event) throws ExecutionException {
  36
  37                 boolean refresh = specificExecute(event);
  38
  39                 CdmDataSourceViewPart view = (CdmDataSourceViewPart) StoreUtil.showView(CdmDataSourceViewPart.ID);
  40                 if(refresh) view.refresh();
  41
  42                 return null;
  43         }
  44
  45         /**
  46          * <p>getSelectedDataSourceContainer</p>
  47          *
  48          * @param event a {@link org.eclipse.core.commands.ExecutionEvent} object.
  49          * @return a {@link eu.etaxonomy.taxeditor.view.datasource.CdmMetaDataAwareDataSourceContainer} object.
  50          */
  51         protected CdmMetaDataAwareDataSourceContainer getSelectedDataSourceContainer(ExecutionEvent event){
  52                 ISelection menuSelection = HandlerUtil.getCurrentSelection(event);
  53                 CdmMetaDataAwareDataSourceContainer container = (CdmMetaDataAwareDataSourceContainer) ((StructuredSelection) menuSelection).getFirstElement();
  54                 return container;
  55         }
  56
  57         /**
  58          * <p>specificExecute</p>
  59          *
  60          * @param event a {@link org.eclipse.core.commands.ExecutionEvent} object.
  61          * @return a boolean.
  62          */
  63         public abstract boolean specificExecute(ExecutionEvent event);
  64 }