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.IWorkbenchPage;
  21 import org.eclipse.ui.IWorkbenchWindow;
  22 import org.eclipse.ui.PlatformUI;
  23 import org.eclipse.ui.actions.CompoundContributionItem;
  24 import org.eclipse.ui.handlers.IHandlerService;
  25
  26 import eu.etaxonomy.cdm.model.common.CdmBase;
  27 import eu.etaxonomy.cdm.model.common.ICdmBase;
  28 import eu.etaxonomy.cdm.persistence.dto.UuidAndTitleCache;
  29 import eu.etaxonomy.taxeditor.Messages;
  30 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  31 import eu.etaxonomy.taxeditor.store.CdmStore;
  32
  33 /**
  34  * Generic context menu for opening elements in the taxeditor.
  35  *
  36  */
  37 public class CdmViewerContextMenu extends CompoundContributionItem {
  38
  39     @Override
  40     protected IContributionItem[] getContributionItems() {
  41         IContributionItem[] contributionItems = new IContributionItem[] {
  42                 new ContributionItem() {
  43                     @Override
  44                     public void fill(Menu menu, int index) {
  45                         final IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
  46                         IWorkbenchPage activePage = window.getActivePage();
  47                         if(activePage!=null){
  48                                 final ISelection selection = activePage.getSelection();
  49                                 if(selection instanceof IStructuredSelection){
  50                                         Object firstElement = ((IStructuredSelection) selection).getFirstElement();
  51                                         Map<Command, String> enabledCommands = CdmViewerUtil.getAvailableViewers(firstElement);
  52
  53                                         //check if only one or multiple viewers/commands are available
  54                                         if(enabledCommands.size()==1){
  55                                                 Entry<Command, String> entry = enabledCommands.entrySet().iterator().next();
  56                                                 final Command command = entry.getKey();
  57                                                 String viewerName = entry.getValue();
  58
  59                                                 MenuItem addItem = new MenuItem(menu, SWT.CASCADE);
  60                                                 addItem.setText(String.format(Messages.CdmViewerContextMenu_OPEN, viewerName));
  61                                                 addItem.addSelectionListener(new CommandInvoker(command, firstElement)) ;
  62                                         }
  63                                         else if(enabledCommands.size()>1){
  64                                                 MenuItem addItem = new MenuItem(menu, SWT.CASCADE);
  65                                                 addItem.setText(Messages.CdmViewerContextMenu_OPEN_IN);
  66                                                 Menu addMenu = new Menu(menu);
  67                                                 addItem.setMenu(addMenu);
  68                                                 for(Entry<Command, String> entry:enabledCommands.entrySet()){
  69                                                         final Command command = entry.getKey();
  70                                                         String viewerName = entry.getValue();
  71
  72                                                         MenuItem menuItem = new MenuItem(addMenu, SWT.NONE);
  73                                                         menuItem.setText(viewerName);
  74                                                         menuItem.addSelectionListener(new CommandInvoker(command, firstElement)) ;
  75                                                 }
  76                                         }
  77                                 }
  78                         }
  79                     }
  80
  81                 }
  82         };
  83         return contributionItems;
  84     }
  85
  86     private final class CommandInvoker extends SelectionAdapter {
  87         private final Command command;
  88         private Object selectedObject;
  89
  90         private CommandInvoker(Command command, Object selectedObject) {
  91             this.command = command;
  92             this.selectedObject = selectedObject;
  93         }
  94
  95         @Override
  96         public void widgetSelected(SelectionEvent e) {
  97             IHandlerService handlerService = (IHandlerService)PlatformUI.getWorkbench().getService(IHandlerService.class);
  98             Map<String, UUID> params = new HashMap<String, UUID>();
  99             //for generic UuidAndTitleCache objects try to load the object
 100             if (selectedObject instanceof UuidAndTitleCache){
 101                 selectedObject = CdmStore.getCommonService().find(CdmBase.class, ((UuidAndTitleCache)selectedObject).getUuid());
 102             }
 103             if(selectedObject instanceof ICdmBase){
 104                 params.put(command.getId()+".uuid", ((ICdmBase) selectedObject).getUuid()); //$NON-NLS-1$
 105             }
 106             ParameterizedCommand parameterizedCommand = ParameterizedCommand.generateCommand(command, params);
 107             try {
 108                 if(parameterizedCommand!=null){
 109                     handlerService.executeCommand(parameterizedCommand, null);
 110                 }
 111                 else{
 112                     handlerService.executeCommand(command.getId(), null);
 113                 }
 114             } catch (NotDefinedException nde) {
 115                 throw new RuntimeException("Could not find open command: " + command.getId()); //$NON-NLS-1$
 116             } catch (Exception exception) {
 117                 MessagingUtils.error(getClass(), "An exception occured while trying to execute "+command.getId(), exception); //$NON-NLS-1$
 118             }
 119         }
 120     }
 121
 122 }