RefreshJcrResultTreeView.java

   1 /*
   2  * Copyright (C) 2007-2012 Argeo GmbH
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.argeo.slc.client.ui.commands;
  17
  18 import java.util.Iterator;
  19
  20 import org.argeo.slc.client.ui.ClientUiPlugin;
  21 import org.argeo.slc.client.ui.model.ResultParent;
  22 import org.argeo.slc.client.ui.views.JcrResultTreeView;
  23 import org.eclipse.core.commands.AbstractHandler;
  24 import org.eclipse.core.commands.ExecutionEvent;
  25 import org.eclipse.core.commands.ExecutionException;
  26 import org.eclipse.jface.resource.ImageDescriptor;
  27 import org.eclipse.jface.viewers.IStructuredSelection;
  28 import org.eclipse.ui.handlers.HandlerUtil;
  29
  30 /**
  31  * Force refresh the ResultTreeView. This command is only intended to be called
  32  * by either the toolbar menu of the view or by the popup menu. Refresh due to
  33  * data changes must be triggered by Observers
  34  */
  35 public class RefreshJcrResultTreeView extends AbstractHandler {
  36         public final static String ID = ClientUiPlugin.ID
  37                         + ".refreshJcrResultTreeView";
  38         public final static String PARAM_REFRESH_TYPE = ClientUiPlugin.ID
  39                         + ".param.refreshType";
  40         public final static String PARAM_REFRESH_TYPE_FULL = "fullRefresh";
  41         public final static ImageDescriptor DEFAULT_IMG_DESCRIPTOR = ClientUiPlugin
  42         .getImageDescriptor("icons/refresh.png");
  43         public final static String DEFAULT_LABEL = "Refresh selected";
  44
  45         public Object execute(final ExecutionEvent event) throws ExecutionException {
  46                 String refreshType = event.getParameter(PARAM_REFRESH_TYPE);
  47                 JcrResultTreeView view = (JcrResultTreeView) HandlerUtil
  48                                 .getActiveWorkbenchWindow(event).getActivePage()
  49                                 .getActivePart();
  50
  51                 // force full refresh without preserving selection from the tool bar
  52                 if (PARAM_REFRESH_TYPE_FULL.equals(refreshType))
  53                         view.refresh(null);
  54                 else {
  55                         IStructuredSelection selection = (IStructuredSelection) HandlerUtil
  56                                         .getActiveWorkbenchWindow(event).getActivePage()
  57                                         .getSelection();
  58                         @SuppressWarnings("rawtypes")
  59                         Iterator it = selection.iterator();
  60                         while (it.hasNext()) {
  61                                 Object obj = it.next();
  62                                 if (obj instanceof ResultParent) {
  63                                         view.refresh((ResultParent) obj);
  64                                 }
  65                         }
  66                 }
  67                 return null;
  68         }
  69 }