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.jface.viewers.TreeNode;
  16 import org.eclipse.swt.SWT;
  17 import org.eclipse.swt.events.SelectionAdapter;
  18 import org.eclipse.swt.events.SelectionEvent;
  19 import org.eclipse.swt.widgets.Menu;
  20 import org.eclipse.swt.widgets.MenuItem;
  21 import org.eclipse.ui.IWorkbenchPage;
  22 import org.eclipse.ui.IWorkbenchWindow;
  23 import org.eclipse.ui.PlatformUI;
  24 import org.eclipse.ui.actions.CompoundContributionItem;
  25 import org.eclipse.ui.handlers.IHandlerService;
  26
  27 import eu.etaxonomy.cdm.model.common.CdmBase;
  28 import eu.etaxonomy.cdm.model.common.ICdmBase;
  29 import eu.etaxonomy.cdm.model.taxon.TaxonNode;
  30 import eu.etaxonomy.cdm.persistence.dto.UuidAndTitleCache;
  31 import eu.etaxonomy.taxeditor.l10n.Messages;
  32 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  33 import eu.etaxonomy.taxeditor.store.CdmStore;
  34
  35 /**
  36  * Generic context menu for opening elements in the taxeditor.
  37  *
  38  */
  39 public class CdmViewerContextMenu extends CompoundContributionItem {
  40
  41     @Override
  42     protected IContributionItem[] getContributionItems() {
  43         IContributionItem[] contributionItems = new IContributionItem[] {
  44                 new ContributionItem() {
  45                     @Override
  46                     public void fill(Menu menu, int index) {
  47                         final IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
  48                         IWorkbenchPage activePage = window.getActivePage();
  49                         if(activePage!=null){
  50                                 final ISelection selection = activePage.getSelection();
  51                                 if(selection instanceof IStructuredSelection){
  52                                         Object firstElement = ((IStructuredSelection) selection).getFirstElement();
  53                                         if (firstElement instanceof TaxonNode && !((TaxonNode)firstElement).hasTaxon()){
  54                                                 firstElement = ((TaxonNode)firstElement).getClassification();
  55                                 }
  56                                         Map<Command, String> enabledCommands = CdmViewerUtil.getAvailableViewers(firstElement);
  57
  58                                         //check if only one or multiple viewers/commands are available
  59                                         if(enabledCommands.size()==1){
  60                                                 Entry<Command, String> entry = enabledCommands.entrySet().iterator().next();
  61                                                 final Command command = entry.getKey();
  62                                                 String viewerName = entry.getValue();
  63
  64                                                 MenuItem addItem = new MenuItem(menu, SWT.CASCADE);
  65                                                 addItem.setText(String.format(Messages.CdmViewerContextMenu_OPEN, viewerName));
  66                                                 addItem.addSelectionListener(new CommandInvoker(command, firstElement)) ;
  67                                         }
  68                                         else if(enabledCommands.size()>1){
  69                                                 MenuItem addItem = new MenuItem(menu, SWT.CASCADE);
  70                                                 addItem.setText(Messages.CdmViewerContextMenu_OPEN_IN);
  71                                                 Menu addMenu = new Menu(menu);
  72                                                 addItem.setMenu(addMenu);
  73                                                 for(Entry<Command, String> entry:enabledCommands.entrySet()){
  74                                                         final Command command = entry.getKey();
  75                                                         String viewerName = entry.getValue();
  76
  77                                                         MenuItem menuItem = new MenuItem(addMenu, SWT.NONE);
  78                                                         menuItem.setText(viewerName);
  79                                                         menuItem.addSelectionListener(new CommandInvoker(command, firstElement)) ;
  80                                                 }
  81                                         }
  82                                 }
  83                         }
  84                     }
  85
  86                 }
  87         };
  88         return contributionItems;
  89     }
  90
  91     private final class CommandInvoker extends SelectionAdapter {
  92         private final Command command;
  93         private Object selectedObject;
  94
  95         private CommandInvoker(Command command, Object selectedObject) {
  96             this.command = command;
  97             this.selectedObject = selectedObject;
  98         }
  99
 100         @Override
 101         public void widgetSelected(SelectionEvent e) {
 102             IHandlerService handlerService = PlatformUI.getWorkbench().getService(IHandlerService.class);
 103             Map<String, UUID> params = new HashMap<String, UUID>();
 104             //for generic UuidAndTitleCache objects try to load the object
 105             if (selectedObject instanceof UuidAndTitleCache){
 106                 selectedObject = CdmStore.getCommonService().find(CdmBase.class, ((UuidAndTitleCache)selectedObject).getUuid());
 107             }
 108             //for tree nodes get the value resp. the object of the node
 109             else if (selectedObject instanceof TreeNode){
 110                 selectedObject = ((TreeNode) selectedObject).getValue();
 111             }
 112             if(selectedObject instanceof ICdmBase){
 113                 params.put(command.getId()+".uuid", ((ICdmBase) selectedObject).getUuid()); //$NON-NLS-1$
 114             }
 115             ParameterizedCommand parameterizedCommand = ParameterizedCommand.generateCommand(command, params);
 116             try {
 117                 if(parameterizedCommand!=null){
 118                     handlerService.executeCommand(parameterizedCommand, null);
 119                 }
 120                 else{
 121                     handlerService.executeCommand(command.getId(), null);
 122                 }
 123             } catch (NotDefinedException nde) {
 124                 throw new RuntimeException("Could not find open command: " + command.getId()); //$NON-NLS-1$
 125             } catch (Exception exception) {
 126                 MessagingUtils.error(getClass(), "An exception occured while trying to execute "+command.getId(), exception); //$NON-NLS-1$
 127             }
 128         }
 129     }
 130
 131 }