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.CdmBase;
  26 import eu.etaxonomy.cdm.model.common.ICdmBase;
  27 import eu.etaxonomy.cdm.persistence.dto.UuidAndTitleCache;
  28 import eu.etaxonomy.taxeditor.Messages;
  29 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  30 import eu.etaxonomy.taxeditor.store.CdmStore;
  31
  32 /**
  33  * Generic context menu for opening elements in the taxeditor.
  34  *
  35  */
  36 public class CdmViewerContextMenu extends CompoundContributionItem {
  37
  38     @Override
  39     protected IContributionItem[] getContributionItems() {
  40         IContributionItem[] contributionItems = new IContributionItem[] {
  41                 new ContributionItem() {
  42                     @Override
  43                     public void fill(Menu menu, int index) {
  44                         final IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
  45                         final ISelection selection = window.getActivePage().getSelection();
  46                         if(selection instanceof IStructuredSelection){
  47                             Object firstElement = ((IStructuredSelection) selection).getFirstElement();
  48                             Map<Command, String> enabledCommands = CdmViewerUtil.getAvailableViewers(firstElement);
  49
  50                             //check if only one or multiple viewers/commands are available
  51                             if(enabledCommands.size()==1){
  52                                 Entry<Command, String> entry = enabledCommands.entrySet().iterator().next();
  53                                 final Command command = entry.getKey();
  54                                 String viewerName = entry.getValue();
  55
  56                                 MenuItem addItem = new MenuItem(menu, SWT.CASCADE);
  57                                 addItem.setText(String.format(Messages.CdmViewerContextMenu_OPEN, viewerName));
  58                                 addItem.addSelectionListener(new CommandInvoker(command, firstElement)) ;
  59                             }
  60                             else if(enabledCommands.size()>1){
  61                                 MenuItem addItem = new MenuItem(menu, SWT.CASCADE);
  62                                 addItem.setText(Messages.CdmViewerContextMenu_OPEN_IN);
  63                                 Menu addMenu = new Menu(menu);
  64                                 addItem.setMenu(addMenu);
  65                                 for(Entry<Command, String> entry:enabledCommands.entrySet()){
  66                                     final Command command = entry.getKey();
  67                                     String viewerName = entry.getValue();
  68
  69                                     MenuItem menuItem = new MenuItem(addMenu, SWT.NONE);
  70                                     menuItem.setText(viewerName);
  71                                     menuItem.addSelectionListener(new CommandInvoker(command, firstElement)) ;
  72                                 }
  73                             }
  74                         }
  75                     }
  76
  77                 }
  78         };
  79         return contributionItems;
  80     }
  81
  82     private final class CommandInvoker extends SelectionAdapter {
  83         private final Command command;
  84         private Object selectedObject;
  85
  86         private CommandInvoker(Command command, Object selectedObject) {
  87             this.command = command;
  88             this.selectedObject = selectedObject;
  89         }
  90
  91         @Override
  92         public void widgetSelected(SelectionEvent e) {
  93             IHandlerService handlerService = (IHandlerService)PlatformUI.getWorkbench().getService(IHandlerService.class);
  94             Map<String, UUID> params = new HashMap<String, UUID>();
  95             //for generic UuidAndTitleCache objects try to load the object
  96             if (selectedObject instanceof UuidAndTitleCache){
  97                 selectedObject = CdmStore.getCommonService().find(CdmBase.class, ((UuidAndTitleCache)selectedObject).getUuid());
  98             }
  99             if(selectedObject instanceof ICdmBase){
 100                 params.put(command.getId()+".uuid", ((ICdmBase) selectedObject).getUuid()); //$NON-NLS-1$
 101             }
 102             ParameterizedCommand parameterizedCommand = ParameterizedCommand.generateCommand(command, params);
 103             try {
 104                 if(parameterizedCommand!=null){
 105                     handlerService.executeCommand(parameterizedCommand, null);
 106                 }
 107                 else{
 108                     handlerService.executeCommand(command.getId(), null);
 109                 }
 110             } catch (NotDefinedException nde) {
 111                 throw new RuntimeException("Could not find open command: " + command.getId()); //$NON-NLS-1$
 112             } catch (Exception exception) {
 113                 MessagingUtils.error(getClass(), "An exception occured while trying execute "+command.getId(), exception); //$NON-NLS-1$
 114             }
 115             PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().getSelection();
 116         }
 117     }
 118
 119 }