commands/GetNodeSize.java

   1 package org.argeo.jcr.ui.explorer.commands;
   2
   3 import javax.jcr.Node;
   4
   5 import org.argeo.eclipse.ui.ErrorFeedback;
   6 import org.argeo.jcr.JcrUtils;
   7 import org.argeo.jcr.ui.explorer.JcrExplorerPlugin;
   8 import org.argeo.jcr.ui.explorer.model.SingleJcrNode;
   9 import org.argeo.jcr.ui.explorer.model.WorkspaceNode;
  10 import org.argeo.jcr.ui.explorer.views.GenericJcrBrowser;
  11 import org.eclipse.core.commands.AbstractHandler;
  12 import org.eclipse.core.commands.ExecutionEvent;
  13 import org.eclipse.core.commands.ExecutionException;
  14 import org.eclipse.jface.dialogs.MessageDialog;
  15 import org.eclipse.jface.viewers.ISelection;
  16 import org.eclipse.jface.viewers.IStructuredSelection;
  17 import org.eclipse.swt.widgets.Shell;
  18 import org.eclipse.ui.handlers.HandlerUtil;
  19
  20 /** Opens the generic node editor. */
  21 public class GetNodeSize extends AbstractHandler {
  22         // private final static Log log = LogFactory.getLog(GetNodeSize.class);
  23
  24         public final static String ID = "org.argeo.jcr.ui.explorer.getNodeSize";
  25         public final static String DEFAULT_ICON_REL_PATH = "icons/getSize.gif";
  26         public final static String DEFAULT_LABEL = JcrExplorerPlugin
  27                         .getMessage("getNodeSizeCmdLbl");
  28
  29         public Object execute(ExecutionEvent event) throws ExecutionException {
  30                 // JcrUtils.getRepositoryByAlias(repositoryRegister,
  31                 // ArgeoJcrConstants.ALIAS_NODE);
  32
  33                 ISelection selection = HandlerUtil.getActiveWorkbenchWindow(event)
  34                                 .getActivePage().getSelection();
  35                 GenericJcrBrowser view = (GenericJcrBrowser) HandlerUtil
  36                                 .getActiveWorkbenchWindow(event).getActivePage()
  37                                 .findView(HandlerUtil.getActivePartId(event));
  38
  39                 if (selection != null && !selection.isEmpty()
  40                                 && selection instanceof IStructuredSelection) {
  41
  42                         // We only get
  43                         IStructuredSelection iss = (IStructuredSelection) selection;
  44                         if (iss.size() > 1)
  45                                 ErrorFeedback.show(JcrExplorerPlugin
  46                                                 .getMessage("warningInvalidMultipleSelection"), null);
  47
  48                         long size = 0;
  49                         Node node;
  50                         if (iss.getFirstElement() instanceof SingleJcrNode)
  51                                 node = ((SingleJcrNode) iss.getFirstElement()).getNode();
  52                         else if (iss.getFirstElement() instanceof WorkspaceNode)
  53                                 node = ((WorkspaceNode) iss.getFirstElement()).getRootNode();
  54                         else
  55                                 // unvalid object type
  56                                 return null;
  57
  58                         size = JcrUtils.getNodeApproxSize(node);
  59
  60                         String[] labels = { "OK" };
  61                         Shell shell = HandlerUtil.getActiveWorkbenchWindow(event)
  62                                         .getShell();
  63                         MessageDialog md = new MessageDialog(shell, "Node size", null,
  64                                         "Node size is: " + size / 1024 + " KB",
  65                                         MessageDialog.INFORMATION, labels, 0);
  66                         md.open();
  67                 }
  68                 return null;
  69         }
  70 }