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.commands.ICommandService;
  24 import org.eclipse.ui.handlers.IHandlerService;
  25
  26 import eu.etaxonomy.cdm.model.common.ICdmBase;
  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<String, String> availableViewers = CdmViewerUtil.getAvailableViewers(firstElement);
  46                             Map<Command, String> enabledCommands = getEnabledCommands(availableViewers);
  47
  48                             //check if only one or multiple viewers/commands are available
  49                             if(enabledCommands.size()==1){
  50                                 Entry<Command, String> entry = enabledCommands.entrySet().iterator().next();
  51                                 final Command command = entry.getKey();
  52                                 String viewerName = entry.getValue();
  53
  54                                 MenuItem addItem = new MenuItem(menu, SWT.CASCADE);
  55                                 addItem.setText(String.format("Open (%s)", viewerName));
  56                                 addItem.addSelectionListener(new CommandInvoker(command, firstElement)) ;
  57                             }
  58                             else if(enabledCommands.size()>1){
  59                                 MenuItem addItem = new MenuItem(menu, SWT.CASCADE);
  60                                 addItem.setText("Open in...");
  61                                 Menu addMenu = new Menu(menu);
  62                                 addItem.setMenu(addMenu);
  63                                 for(Entry<Command, String> entry:enabledCommands.entrySet()){
  64                                     final Command command = entry.getKey();
  65                                     String viewerName = entry.getValue();
  66
  67                                     MenuItem menuItem = new MenuItem(addMenu, SWT.NONE);
  68                                     menuItem.setText(viewerName);
  69                                     menuItem.addSelectionListener(new CommandInvoker(command, firstElement)) ;
  70                                 }
  71                             }
  72                         }
  73                     }
  74
  75                 }
  76         };
  77         return contributionItems;
  78     }
  79
  80     private Map<Command, String> getEnabledCommands(Map<String, String> availableViewers) {
  81         Map<Command, String> enabledCommands = new HashMap<Command, String>();
  82         for(Entry<String, String> entry:availableViewers.entrySet()){
  83             final String commandId = entry.getKey();
  84             ICommandService commandService = (ICommandService)PlatformUI.getWorkbench().getService(ICommandService.class);
  85             Command command = commandService.getCommand(commandId);
  86             if(command.isEnabled()){
  87                 enabledCommands.put(command, entry.getValue());
  88             }
  89         }
  90         return enabledCommands;
  91     }
  92
  93     private final class CommandInvoker extends SelectionAdapter {
  94         private final Command command;
  95         private final Object selectedObject;
  96
  97         private CommandInvoker(Command command, Object selectedObject) {
  98             this.command = command;
  99             this.selectedObject = selectedObject;
 100         }
 101
 102         @Override
 103         public void widgetSelected(SelectionEvent e) {
 104             IHandlerService handlerService = (IHandlerService)PlatformUI.getWorkbench().getService(IHandlerService.class);
 105             Map<String, UUID> params = new HashMap<String, UUID>();
 106             if(selectedObject instanceof ICdmBase){
 107                 params.put(command.getId()+".uuid", ((ICdmBase) selectedObject).getUuid());
 108             }
 109             ParameterizedCommand parameterizedCommand = ParameterizedCommand.generateCommand(command, params);
 110             try {
 111                 if(parameterizedCommand!=null){
 112                     handlerService.executeCommand(parameterizedCommand, null);
 113                 }
 114                 else{
 115                     handlerService.executeCommand(command.getId(), null);
 116                 }
 117             } catch (NotDefinedException nde) {
 118                 throw new RuntimeException("Could not find open command: " + command.getId());
 119             } catch (Exception exception) {
 120                 MessagingUtils.error(getClass(), "An exception occured while trying execute "+command.getId(), exception);
 121             }
 122             PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().getSelection();
 123         }
 124     }
 125
 126 }