base/runtime/org.argeo.eclipse.ui.jcr/src/main/java/org/argeo/eclipse/ui/jcr/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.eclipse.ui.jcr.commands;
  17
  18 import java.util.Iterator;
  19
  20 import org.argeo.eclipse.ui.jcr.views.AbstractJcrBrowser;
  21 import org.eclipse.core.commands.AbstractHandler;
  22 import org.eclipse.core.commands.ExecutionEvent;
  23 import org.eclipse.core.commands.ExecutionException;
  24 import org.eclipse.jface.viewers.ISelection;
  25 import org.eclipse.jface.viewers.IStructuredSelection;
  26 import org.eclipse.ui.handlers.HandlerUtil;
  27
  28 /**
  29  * Call the refresh method of the active AbstractJcrBrowser instance.
  30  *
  31  * Warning: this method only refreshes the viewer, if the model is "stale", e.g.
  32  * if some changes in the underlying data have not yet been propagated to the
  33  * model, the view will not display up-to-date information.
  34  */
  35 @Deprecated
  36 public class Refresh extends AbstractHandler {
  37
  38         public Object execute(ExecutionEvent event) throws ExecutionException {
  39                 ISelection selection = HandlerUtil.getActiveWorkbenchWindow(event)
  40                                 .getActivePage().getSelection();
  41                 AbstractJcrBrowser view = (AbstractJcrBrowser) HandlerUtil
  42                                 .getActiveWorkbenchWindow(event).getActivePage()
  43                                 .findView(HandlerUtil.getActivePartId(event));
  44                 if (selection != null && selection instanceof IStructuredSelection) {
  45                         Iterator<?> it = ((IStructuredSelection) selection).iterator();
  46                         while (it.hasNext()) {
  47                                 Object obj = it.next();
  48                                 view.refresh(obj);
  49                         }
  50                 }
  51                 return null;
  52         }
  53 }