eu.etaxonomy.taxeditor.molecular/src/main/java/eu/etaxonomy/taxeditor/molecular/editor/e4/handler/ShowPherogramHandlerE4.java

   1 package eu.etaxonomy.taxeditor.molecular.editor.e4.handler;
   2
   3
   4 import eu.etaxonomy.cdm.common.URI;
   5
   6 import javax.inject.Named;
   7
   8 import org.eclipse.e4.core.di.annotations.CanExecute;
   9 import org.eclipse.e4.core.di.annotations.Execute;
  10 import org.eclipse.e4.core.di.annotations.Optional;
  11 import org.eclipse.e4.ui.model.application.ui.basic.MPart;
  12 import org.eclipse.e4.ui.model.application.ui.menu.MHandledMenuItem;
  13 import org.eclipse.e4.ui.services.IServiceConstants;
  14 import org.eclipse.e4.ui.workbench.modeling.EPartService;
  15 import org.eclipse.e4.ui.workbench.modeling.EPartService.PartState;
  16 import org.eclipse.jface.viewers.IStructuredSelection;
  17 import org.eclipse.jface.viewers.TreeNode;
  18
  19 import eu.etaxonomy.cdm.model.media.MediaUtils;
  20 import eu.etaxonomy.cdm.model.molecular.SingleRead;
  21 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  22 import eu.etaxonomy.taxeditor.molecular.TaxeditorMolecularPlugin;
  23 import eu.etaxonomy.taxeditor.molecular.editor.e4.AlignmentEditorE4;
  24 import eu.etaxonomy.taxeditor.molecular.editor.e4.PherogramPartE4;
  25 import eu.etaxonomy.taxeditor.molecular.l10n.Messages;
  26 import info.bioinfweb.libralign.pherogram.model.PherogramComponentModel;
  27
  28
  29
  30 /**
  31  * Displays an undistorted pherogram with {@link PherogramPartE4}.
  32  *
  33  * @author Ben Stöver
  34  */
  35 public class ShowPherogramHandlerE4 {
  36
  37     @Execute
  38     public void execute(@Optional@Named(IServiceConstants.ACTIVE_SELECTION)IStructuredSelection selection,
  39             EPartService partService) {
  40         //TODO Can the parent node (containing the cut positions) be extracted from SingleRead?
  41         try {
  42             SingleRead singleRead = (SingleRead) ((TreeNode) selection.getFirstElement()).getValue();
  43             URI uri = null;
  44             if (singleRead.getPherogram() != null) {  // Pherogram objects without URI are possible.
  45                 uri = MediaUtils.getFirstMediaRepresentationPart(singleRead.getPherogram()).getUri();
  46             }
  47
  48             if (uri == null) {
  49                 MessagingUtils.messageDialog(Messages.ShowPherogramHandler_NO_PHEROGRAM, this,
  50                         Messages.ShowPherogramHandler_NO_PHEROGRAM_MESSAGE);
  51             }
  52             else {
  53                 MPart part = partService.createPart(eu.etaxonomy.taxeditor.molecular.AppModelId.PARTDESCRIPTOR_EU_ETAXONOMY_TAXEDITOR_MOLECULAR_EDITOR_E4_PHEROGRAMPARTE4);
  54                 part = partService.showPart(part, PartState.ACTIVATE);
  55                 PherogramPartE4 pherogramPart = (PherogramPartE4) part.getObject();
  56                 pherogramPart.init(new PherogramComponentModel(AlignmentEditorE4.readPherogram(uri)));
  57             }
  58         }
  59         catch (Exception e) {
  60             MessagingUtils.errorDialog(Messages.ShowPherogramHandler_ERROR, null, e.getLocalizedMessage(), TaxeditorMolecularPlugin.PLUGIN_ID,
  61                     e, false);
  62         }
  63     }
  64
  65     @CanExecute
  66     public boolean canExecute(@Optional @Named(IServiceConstants.ACTIVE_SELECTION) IStructuredSelection selection, MHandledMenuItem menuItem) {
  67         boolean canExecute = false;
  68         canExecute = selection.size()==1
  69                 && selection.getFirstElement() instanceof TreeNode
  70                 && ((TreeNode) selection.getFirstElement()).getValue() instanceof SingleRead;
  71         menuItem.setVisible(canExecute);
  72         return canExecute;
  73     }
  74 }