eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/view/media/e4/MediaViewPartE4.java

   1 /**
   2 * Copyright (C) 2007 EDIT
   3 * European Distributed Institute of Taxonomy
   4 * http://www.e-taxonomy.eu
   5 *
   6 * The contents of this file are subject to the Mozilla Public License Version 1.1
   7 * See LICENSE.TXT at the top of this package for the full license terms.
   8 */
   9
  10 package eu.etaxonomy.taxeditor.editor.view.media.e4;
  11
  12 import javax.annotation.PostConstruct;
  13 import javax.inject.Inject;
  14 import javax.inject.Named;
  15
  16 import org.eclipse.e4.core.di.annotations.Optional;
  17 import org.eclipse.e4.ui.model.application.ui.basic.MPart;
  18 import org.eclipse.e4.ui.services.EMenuService;
  19 import org.eclipse.e4.ui.services.IServiceConstants;
  20 import org.eclipse.e4.ui.workbench.modeling.ESelectionService;
  21 import org.eclipse.jface.viewers.ISelectionChangedListener;
  22 import org.eclipse.jface.viewers.IStructuredSelection;
  23 import org.eclipse.jface.viewers.StructuredSelection;
  24 import org.eclipse.jface.viewers.TreeNode;
  25 import org.eclipse.jface.viewers.TreeViewer;
  26 import org.eclipse.jface.viewers.Viewer;
  27 import org.eclipse.swt.SWT;
  28 import org.eclipse.swt.widgets.Composite;
  29 import org.eclipse.swt.widgets.Tree;
  30
  31 import eu.etaxonomy.cdm.model.common.CdmBase;
  32 import eu.etaxonomy.cdm.model.description.IDescribable;
  33 import eu.etaxonomy.taxeditor.editor.MultiPageTaxonEditor;
  34 import eu.etaxonomy.taxeditor.editor.l10n.Messages;
  35 import eu.etaxonomy.taxeditor.editor.view.media.MediaContentProvider;
  36 import eu.etaxonomy.taxeditor.editor.view.media.MediaLabelProvider;
  37 import eu.etaxonomy.taxeditor.model.AbstractUtility;
  38 import eu.etaxonomy.taxeditor.model.IPartContentHasDetails;
  39 import eu.etaxonomy.taxeditor.model.IPartContentHasMedia;
  40 import eu.etaxonomy.taxeditor.model.IPartContentHasSupplementalData;
  41 import eu.etaxonomy.taxeditor.operation.IPostOperationEnabled;
  42 import eu.etaxonomy.taxeditor.view.e4.AbstractCdmEditorPartE4;
  43
  44 /**
  45  *
  46  * @author pplitzner
  47  * @since Aug 14, 2017
  48  *
  49  */
  50 public class MediaViewPartE4 extends AbstractCdmEditorPartE4
  51         implements IPartContentHasDetails, IPartContentHasSupplementalData, IPostOperationEnabled {
  52
  53     private ISelectionChangedListener selectionChangedListener;
  54
  55     private TreeViewer viewer;
  56
  57         @Inject
  58         private ESelectionService selService;
  59
  60         @PostConstruct
  61         public void create(Composite parent, EMenuService menuService) {
  62
  63                 viewer = new TreeViewer(new Tree(parent, SWT.MULTI | SWT.H_SCROLL
  64                                 | SWT.V_SCROLL | SWT.FULL_SELECTION));
  65
  66                 viewer.setContentProvider(new MediaContentProvider());
  67                 viewer.setLabelProvider(new MediaLabelProvider());
  68                 viewer.setAutoExpandLevel(2);
  69
  70                 // Propagate selection from viewer
  71         selectionChangedListener = (event -> selService.setSelection(AbstractUtility.getElementsFromSelectionChangedEvent(event)));
  72         viewer.addSelectionChangedListener(selectionChangedListener);
  73
  74         //create context menu
  75         menuService.registerContextMenu(viewer.getControl(), "eu.etaxonomy.taxeditor.editor.popupmenu.mediaview");
  76         }
  77
  78         @Inject
  79         @Optional
  80         public void selectionChanged(
  81                 @Named(IServiceConstants.ACTIVE_SELECTION)Object selection,
  82                 @Named(IServiceConstants.ACTIVE_PART)MPart activePart,
  83                 MPart thisPart){
  84             if(activePart==thisPart){
  85                 return;
  86             }
  87
  88             Object partObject = createPartObject(activePart);
  89
  90             if(partObject instanceof IPartContentHasMedia && ((IPartContentHasMedia) partObject).canAttachMedia()){
  91                 IStructuredSelection structuredSelection = createSelection(selection);
  92                 if(structuredSelection==null || structuredSelection.isEmpty()){
  93                     showEmptyPage();
  94                     return;
  95                 }
  96
  97
  98                 //        if (partObject instanceof DetailsViewPart || partObject instanceof SupplementalDataViewPart
  99                 //                || partObject instanceof DescriptiveViewPart) {
 100                 //            // do not show empty page as these views are also used to edit the
 101                 //            // description selected in this view
 102                 //            return;
 103                 //        }
 104
 105                 Object firstElement = structuredSelection.getFirstElement();
 106                 if (partObject instanceof MultiPageTaxonEditor){
 107                     if (firstElement != ((MultiPageTaxonEditor)partObject).getTaxon()){
 108                         showEmptyPage();
 109                         return;
 110                     }
 111                 }
 112                 if(firstElement instanceof TreeNode){
 113                     showViewer(new StructuredSelection(((TreeNode) firstElement).getValue()), activePart, viewer);
 114                     return;
 115                 }
 116                 else if(firstElement!=null
 117                         && firstElement instanceof IDescribable<?>){
 118                     showViewer((IStructuredSelection) selection, activePart, viewer);
 119                     return;
 120                 }
 121             }
 122             showEmptyPage();
 123             return;
 124         }
 125
 126         /** {@inheritDoc} */
 127         @Override
 128         public void changed(Object object) {
 129             viewer.expandToLevel(2);
 130             viewer.refresh();
 131             if(object != null){
 132                 StructuredSelection selection = new StructuredSelection(object);
 133                 viewer.setSelection(selection, true);
 134             }
 135 //          //TODO: should be replaced with the possibility to set views dirty
 136 //          // when we move to Eclipse 4
 137 //          // take a look at ISaveblePart
 138 //          if(part instanceof BulkEditor && !(object instanceof SpecimenOrObservationBase<?>)){
 139 //              ((BulkEditor) part).forceDirty();
 140 //              IStructuredSelection selection = (IStructuredSelection) ((BulkEditor) part).getSelectionProvider().getSelection();
 141 //            ((BulkEditor) part).changed(selection.getFirstElement());
 142 //
 143 //          }
 144 //          if (part instanceof E4PartWrapper){
 145 //              part = WorkbenchUtility.getE4WrappedPart(part);
 146 //              if (part instanceof IDirtyMarkable){
 147 //                       StructuredSelection selection = new StructuredSelection(object);
 148 //                      ((IDirtyMarkable)part).changed(selection.getFirstElement());
 149 //              }
 150 //          }
 151
 152             super.changed(object);
 153         }
 154
 155         @Override
 156         protected String getViewName() {
 157                 return Messages.MediaViewPart_MEDIA;
 158         }
 159
 160     public Viewer getViewer() {
 161         return viewer;
 162     }
 163
 164     /**
 165      * {@inheritDoc}
 166      */
 167     @Override
 168     public boolean postOperation(CdmBase objectAffectedByOperation) {
 169         return true;
 170     }
 171
 172     /**
 173      * {@inheritDoc}
 174      */
 175     @Override
 176     public boolean onComplete() {
 177         viewer.refresh();
 178         return true;
 179     }
 180 }