eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/view/media/MediaViewPart.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;
  11
  12 import org.eclipse.jface.action.GroupMarker;
  13 import org.eclipse.jface.action.MenuManager;
  14 import org.eclipse.jface.viewers.ISelection;
  15 import org.eclipse.jface.viewers.IStructuredSelection;
  16 import org.eclipse.jface.viewers.StructuredSelection;
  17 import org.eclipse.jface.viewers.TreeNode;
  18 import org.eclipse.jface.viewers.TreeViewer;
  19 import org.eclipse.jface.viewers.Viewer;
  20 import org.eclipse.swt.SWT;
  21 import org.eclipse.swt.widgets.Composite;
  22 import org.eclipse.swt.widgets.Control;
  23 import org.eclipse.swt.widgets.Menu;
  24 import org.eclipse.swt.widgets.Tree;
  25 import org.eclipse.ui.IWorkbenchActionConstants;
  26 import org.eclipse.ui.IWorkbenchPart;
  27
  28 import eu.etaxonomy.cdm.model.description.IDescribable;
  29 import eu.etaxonomy.cdm.model.occurrence.SpecimenOrObservationBase;
  30 import eu.etaxonomy.taxeditor.bulkeditor.BulkEditor;
  31 import eu.etaxonomy.taxeditor.editor.view.descriptive.DescriptiveViewPart;
  32 import eu.etaxonomy.taxeditor.model.AbstractUtility;
  33 import eu.etaxonomy.taxeditor.model.IPartContentHasDetails;
  34 import eu.etaxonomy.taxeditor.model.IPartContentHasMedia;
  35 import eu.etaxonomy.taxeditor.model.IPartContentHasSupplementalData;
  36 import eu.etaxonomy.taxeditor.view.AbstractCdmEditorViewPart;
  37 import eu.etaxonomy.taxeditor.view.detail.DetailsViewPart;
  38 import eu.etaxonomy.taxeditor.view.supplementaldata.SupplementalDataViewPart;
  39
  40 /**
  41  * @author n.hoffmann
  42  * @created Jun 15, 2010
  43  * @version 1.0
  44  */
  45 public class MediaViewPart extends AbstractCdmEditorViewPart implements IPartContentHasDetails, IPartContentHasSupplementalData {
  46
  47         public static final String ID = "eu.etaxonomy.taxeditor.editor.view.media";
  48
  49
  50         private TreeViewer viewer;
  51
  52         /** {@inheritDoc} */
  53         @Override
  54         public void createViewer(Composite parent) {
  55
  56                 viewer = new TreeViewer(new Tree(parent, SWT.MULTI | SWT.H_SCROLL
  57                                 | SWT.V_SCROLL | SWT.FULL_SELECTION));
  58
  59                 viewer.setContentProvider(new MediaContentProvider());
  60                 viewer.setLabelProvider(new MediaLabelProvider());
  61                 viewer.setAutoExpandLevel(2);
  62
  63                 // Propagate selection from viewer
  64                 getSite().setSelectionProvider(viewer);
  65
  66                 // Add context menu to tree
  67                 MenuManager menuMgr = new MenuManager();
  68                 menuMgr.add(new GroupMarker(IWorkbenchActionConstants.MB_ADDITIONS));
  69                 getSite().registerContextMenu(menuMgr, viewer);
  70
  71                 Control control = viewer.getControl();
  72                 Menu menu = menuMgr.createContextMenu(control);
  73                 control.setMenu(menu);
  74
  75         }
  76
  77         /** {@inheritDoc} */
  78         @Override
  79         protected ISelection getInitialSelection() {
  80                 if(getEditor() != null){
  81                         return new StructuredSelection(getEditor().getEditorInput());
  82                 }
  83
  84                 return super.getInitialSelection();
  85         }
  86
  87         /** {@inheritDoc} */
  88         @Override
  89     protected void selectionChanged_internal(IWorkbenchPart part, ISelection selection) {
  90             if(part==this){
  91                 return;
  92             }
  93                 if(AbstractUtility.getActiveEditor() == null){
  94                         showEmptyPage();
  95                         return;
  96                 }
  97
  98         if (part instanceof DetailsViewPart || part instanceof SupplementalDataViewPart
  99                 || part 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                 if(part instanceof IPartContentHasMedia && ((IPartContentHasMedia) part).canAttachMedia()){
 106                     if(selection instanceof IStructuredSelection){
 107                         Object firstElement = ((IStructuredSelection) selection).getFirstElement();
 108                         if(firstElement instanceof TreeNode){
 109                             showViewer(part, new StructuredSelection(((TreeNode) firstElement).getValue()));
 110                             return;
 111                         }
 112                         else if(firstElement!=null
 113                             && firstElement instanceof IDescribable<?>){
 114                             showViewer(part, (IStructuredSelection) selection);
 115                             return;
 116                         }
 117                     }
 118                 }
 119                 showEmptyPage();
 120         }
 121
 122         /** {@inheritDoc} */
 123         @Override
 124         public void changed(Object object) {
 125             viewer.expandToLevel(2);
 126             viewer.refresh();
 127             if(object != null){
 128                 StructuredSelection selection = new StructuredSelection(object);
 129                 viewer.setSelection(selection, true);
 130             }
 131             //TODO: should be replaced with the possibility to set views dirty
 132             // when we move to Eclipse 4
 133             // take a look at ISaveblePart
 134             if(part instanceof BulkEditor && !(object instanceof SpecimenOrObservationBase<?>)){
 135                 ((BulkEditor) part).forceDirty();
 136                 IStructuredSelection selection = (IStructuredSelection) ((BulkEditor) part).getSelectionProvider().getSelection();
 137             ((BulkEditor) part).changed(selection.getFirstElement());
 138
 139             }
 140             super.changed(object);
 141         }
 142
 143         /** {@inheritDoc} */
 144         @Override
 145         public Viewer getViewer() {
 146                 return viewer;
 147         }
 148
 149         @Override
 150     public boolean onComplete() {
 151                 return true;
 152         }
 153
 154         @Override
 155         protected String getViewName() {
 156                 return "Media";
 157         }
 158 }