eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/view/CdmViewerContextMenu.java

   1 package eu.etaxonomy.taxeditor.view;
   2
   3 import java.util.HashMap;
   4 import java.util.Map;
   5 import java.util.Map.Entry;
   6 import java.util.UUID;
   7
   8 import org.eclipse.core.commands.Command;
   9 import org.eclipse.core.commands.ParameterizedCommand;
  10 import org.eclipse.core.commands.common.NotDefinedException;
  11 import org.eclipse.jface.action.ContributionItem;
  12 import org.eclipse.jface.action.IContributionItem;
  13 import org.eclipse.jface.viewers.ISelection;
  14 import org.eclipse.jface.viewers.IStructuredSelection;
  15 import org.eclipse.swt.SWT;
  16 import org.eclipse.swt.events.SelectionAdapter;
  17 import org.eclipse.swt.events.SelectionEvent;
  18 import org.eclipse.swt.widgets.Menu;
  19 import org.eclipse.swt.widgets.MenuItem;
  20 import org.eclipse.ui.IWorkbenchWindow;
  21 import org.eclipse.ui.PlatformUI;
  22 import org.eclipse.ui.actions.CompoundContributionItem;
  23 import org.eclipse.ui.handlers.IHandlerService;
  24
  25 import eu.etaxonomy.cdm.model.common.ICdmBase;
  26 import eu.etaxonomy.taxeditor.Messages;
  27 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  28
  29 /**
  30  * Generic context menu for opening elements in the taxeditor.
  31  *
  32  */
  33 public class CdmViewerContextMenu extends CompoundContributionItem {
  34
  35     @Override
  36     protected IContributionItem[] getContributionItems() {
  37         IContributionItem[] contributionItems = new IContributionItem[] {
  38                 new ContributionItem() {
  39                     @Override
  40                     public void fill(Menu menu, int index) {
  41                         final IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
  42                         final ISelection selection = window.getActivePage().getSelection();
  43                         if(selection instanceof IStructuredSelection){
  44                             Object firstElement = ((IStructuredSelection) selection).getFirstElement();
  45                             Map<Command, String> enabledCommands = CdmViewerUtil.getAvailableViewers(firstElement);
  46
  47                             //check if only one or multiple viewers/commands are available
  48                             if(enabledCommands.size()==1){
  49                                 Entry<Command, String> entry = enabledCommands.entrySet().iterator().next();
  50                                 final Command command = entry.getKey();
  51                                 String viewerName = entry.getValue();
  52
  53                                 MenuItem addItem = new MenuItem(menu, SWT.CASCADE);
  54                                 addItem.setText(String.format(Messages.CdmViewerContextMenu_OPEN, viewerName));
  55                                 addItem.addSelectionListener(new CommandInvoker(command, firstElement)) ;
  56                             }
  57                             else if(enabledCommands.size()>1){
  58                                 MenuItem addItem = new MenuItem(menu, SWT.CASCADE);
  59                                 addItem.setText(Messages.CdmViewerContextMenu_OPEN_IN);
  60                                 Menu addMenu = new Menu(menu);
  61                                 addItem.setMenu(addMenu);
  62                                 for(Entry<Command, String> entry:enabledCommands.entrySet()){
  63                                     final Command command = entry.getKey();
  64                                     String viewerName = entry.getValue();
  65
  66                                     MenuItem menuItem = new MenuItem(addMenu, SWT.NONE);
  67                                     menuItem.setText(viewerName);
  68                                     menuItem.addSelectionListener(new CommandInvoker(command, firstElement)) ;
  69                                 }
  70                             }
  71                         }
  72                     }
  73
  74                 }
  75         };
  76         return contributionItems;
  77     }
  78
  79     private final class CommandInvoker extends SelectionAdapter {
  80         private final Command command;
  81         private final Object selectedObject;
  82
  83         private CommandInvoker(Command command, Object selectedObject) {
  84             this.command = command;
  85             this.selectedObject = selectedObject;
  86         }
  87
  88         @Override
  89         public void widgetSelected(SelectionEvent e) {
  90             IHandlerService handlerService = (IHandlerService)PlatformUI.getWorkbench().getService(IHandlerService.class);
  91             Map<String, UUID> params = new HashMap<String, UUID>();
  92             if(selectedObject instanceof ICdmBase){
  93                 params.put(command.getId()+".uuid", ((ICdmBase) selectedObject).getUuid()); //$NON-NLS-1$
  94             }
  95             ParameterizedCommand parameterizedCommand = ParameterizedCommand.generateCommand(command, params);
  96             try {
  97                 if(parameterizedCommand!=null){
  98                     handlerService.executeCommand(parameterizedCommand, null);
  99                 }
 100                 else{
 101                     handlerService.executeCommand(command.getId(), null);
 102                 }
 103             } catch (NotDefinedException nde) {
 104                 throw new RuntimeException("Could not find open command: " + command.getId()); //$NON-NLS-1$
 105             } catch (Exception exception) {
 106                 MessagingUtils.error(getClass(), "An exception occured while trying execute "+command.getId(), exception); //$NON-NLS-1$
 107             }
 108             PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().getSelection();
 109         }
 110     }
 111
 112 }