server/plugins/org.argeo.jcr.ui.explorer/src/main/java/org/argeo/jcr/ui/explorer/commands/Refresh.java

   1 /*
   2  * Copyright (C) 2007-2012 Mathieu Baudier
   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.jcr.ui.explorer.commands;
  17
  18 import java.util.Iterator;
  19
  20 import org.argeo.eclipse.ui.TreeParent;
  21 import org.argeo.eclipse.ui.jcr.views.AbstractJcrBrowser;
  22 import org.argeo.jcr.ui.explorer.utils.JcrUiUtils;
  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.viewers.ISelection;
  27 import org.eclipse.jface.viewers.IStructuredSelection;
  28 import org.eclipse.ui.handlers.HandlerUtil;
  29
  30 /**
  31  * Force the selected objects of the active view to be refreshed doing the
  32  * following:
  33  * <ol>
  34  * <li>The model objects are recomputed</li>
  35  * <li>the view is refreshed</li>
  36  * </ol>
  37  */
  38 public class Refresh extends AbstractHandler {
  39
  40         public Object execute(ExecutionEvent event) throws ExecutionException {
  41                 ISelection selection = HandlerUtil.getActiveWorkbenchWindow(event)
  42                                 .getActivePage().getSelection();
  43                 AbstractJcrBrowser view = (AbstractJcrBrowser) HandlerUtil
  44                                 .getActiveWorkbenchWindow(event).getActivePage()
  45                                 .findView(HandlerUtil.getActivePartId(event));
  46                 if (selection != null && selection instanceof IStructuredSelection) {
  47                         Iterator<?> it = ((IStructuredSelection) selection).iterator();
  48                         while (it.hasNext()) {
  49                                 Object obj = it.next();
  50                                 if (obj instanceof TreeParent) {
  51                                         TreeParent tp = (TreeParent) obj;
  52                                         JcrUiUtils.forceRefreshIfNeeded(tp);
  53                                         view.refresh(obj);
  54                                 }
  55                         }
  56                 }
  57                 return null;
  58         }
  59 }