/*
    * Copyright (C) 2007-2012 Argeo GmbH
    *
    * Licensed under the Apache License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    *
    *         http://www.apache.org/licenses/LICENSE-2.0
    *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.argeo.cms.e4.jcr.handlers;
  
  import java.util.List;
  
  import javax.inject.Named;
  
  import org.argeo.cms.e4.jcr.JcrBrowserView;
  import org.argeo.cms.ui.jcr.JcrBrowserUtils;
  import org.argeo.eclipse.ui.TreeParent;
  import org.eclipse.e4.core.di.annotations.Execute;
  import org.eclipse.e4.ui.model.application.ui.basic.MPart;
  import org.eclipse.e4.ui.services.IServiceConstants;
  import org.eclipse.e4.ui.workbench.modeling.EPartService;
  import org.eclipse.e4.ui.workbench.modeling.ESelectionService;
  
  /**
   * Force the selected objects of the active view to be refreshed doing the
   * following:
   * <ol>
   * <li>The model objects are recomputed</li>
   * <li>the view is refreshed</li>
   * </ol>
   */
  public class Refresh {
  
  	@Execute
  	public void execute(@Named(IServiceConstants.ACTIVE_PART) MPart part, EPartService partService,
  			ESelectionService selectionService) {
  
  		JcrBrowserView view = (JcrBrowserView) part.getObject();
  		List<?> selection = (List<?>) selectionService.getSelection();
  
  		if (selection != null && !selection.isEmpty()) {
  			for (Object obj : selection)
  				if (obj instanceof TreeParent) {
  					TreeParent tp = (TreeParent) obj;
  					JcrBrowserUtils.forceRefreshIfNeeded(tp);
  					view.refresh(obj);
  				}
  		} else if (view instanceof JcrBrowserView)
  			view.refresh(null); // force full refresh
  	}
  }