eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/view/media/MediaViewPart.java

   1 // $Id$
   2 /**
   3 * Copyright (C) 2007 EDIT
   4 * European Distributed Institute of Taxonomy
   5 * http://www.e-taxonomy.eu
   6 *
   7 * The contents of this file are subject to the Mozilla Public License Version 1.1
   8 * See LICENSE.TXT at the top of this package for the full license terms.
   9 */
  10
  11 package eu.etaxonomy.taxeditor.editor.view.media;
  12
  13 import org.eclipse.jface.action.GroupMarker;
  14 import org.eclipse.jface.action.MenuManager;
  15 import org.eclipse.jface.viewers.ISelection;
  16 import org.eclipse.jface.viewers.IStructuredSelection;
  17 import org.eclipse.jface.viewers.StructuredSelection;
  18 import org.eclipse.jface.viewers.TreeNode;
  19 import org.eclipse.jface.viewers.TreeViewer;
  20 import org.eclipse.jface.viewers.Viewer;
  21 import org.eclipse.swt.SWT;
  22 import org.eclipse.swt.widgets.Composite;
  23 import org.eclipse.swt.widgets.Control;
  24 import org.eclipse.swt.widgets.Menu;
  25 import org.eclipse.swt.widgets.Tree;
  26 import org.eclipse.ui.IWorkbenchActionConstants;
  27 import org.eclipse.ui.IWorkbenchPart;
  28
  29 import eu.etaxonomy.cdm.model.description.IDescribable;
  30 import eu.etaxonomy.cdm.model.occurrence.SpecimenOrObservationBase;
  31 import eu.etaxonomy.taxeditor.bulkeditor.BulkEditor;
  32 import eu.etaxonomy.taxeditor.editor.view.descriptive.DescriptiveViewPart;
  33 import eu.etaxonomy.taxeditor.model.AbstractUtility;
  34 import eu.etaxonomy.taxeditor.model.IPartContentHasDetails;
  35 import eu.etaxonomy.taxeditor.model.IPartContentHasMedia;
  36 import eu.etaxonomy.taxeditor.model.IPartContentHasSupplementalData;
  37 import eu.etaxonomy.taxeditor.view.AbstractCdmEditorViewPart;
  38 import eu.etaxonomy.taxeditor.view.detail.DetailsViewPart;
  39 import eu.etaxonomy.taxeditor.view.supplementaldata.SupplementalDataViewPart;
  40
  41 /**
  42  * @author n.hoffmann
  43  * @created Jun 15, 2010
  44  * @version 1.0
  45  */
  46 public class MediaViewPart extends AbstractCdmEditorViewPart implements IPartContentHasDetails, IPartContentHasSupplementalData {
  47
  48         public static final String ID = "eu.etaxonomy.taxeditor.editor.view.media";
  49
  50
  51         private TreeViewer viewer;
  52
  53         /** {@inheritDoc} */
  54         @Override
  55         public void createViewer(Composite parent) {
  56
  57                 viewer = new TreeViewer(new Tree(parent, SWT.MULTI | SWT.H_SCROLL
  58                                 | SWT.V_SCROLL | SWT.FULL_SELECTION));
  59
  60                 viewer.setContentProvider(new MediaContentProvider());
  61                 viewer.setLabelProvider(new MediaLabelProvider());
  62                 viewer.setAutoExpandLevel(2);
  63
  64                 // Propagate selection from viewer
  65                 getSite().setSelectionProvider(viewer);
  66
  67                 // Add context menu to tree
  68                 MenuManager menuMgr = new MenuManager();
  69                 menuMgr.add(new GroupMarker(IWorkbenchActionConstants.MB_ADDITIONS));
  70                 getSite().registerContextMenu(menuMgr, viewer);
  71
  72                 Control control = viewer.getControl();
  73                 Menu menu = menuMgr.createContextMenu(control);
  74                 control.setMenu(menu);
  75
  76         }
  77
  78         /** {@inheritDoc} */
  79         @Override
  80         protected ISelection getInitialSelection() {
  81                 if(getEditor() != null){
  82                         return new StructuredSelection(getEditor().getEditorInput());
  83                 }
  84
  85                 return super.getInitialSelection();
  86         }
  87
  88         /** {@inheritDoc} */
  89         @Override
  90     protected void selectionChanged_internal(IWorkbenchPart part, ISelection selection) {
  91             if(part==this){
  92                 return;
  93             }
  94                 if(AbstractUtility.getActiveEditor() == null){
  95                         showEmptyPage();
  96                         return;
  97                 }
  98
  99         if (part instanceof DetailsViewPart || part instanceof SupplementalDataViewPart
 100                 || part instanceof DescriptiveViewPart) {
 101             // do not show empty page as these views are also used to edit the
 102             // description selected in this view
 103             return;
 104         }
 105
 106                 if(part instanceof IPartContentHasMedia && ((IPartContentHasMedia) part).canAttachMedia()){
 107                     if(selection instanceof IStructuredSelection
 108                         && ((IStructuredSelection) selection).getFirstElement() instanceof IDescribable<?>){
 109                         Object firstElement = ((IStructuredSelection) selection).getFirstElement();
 110                         if(firstElement instanceof TreeNode){
 111                             showViewer(part, new StructuredSelection(((TreeNode) firstElement).getValue()));
 112                             return;
 113                         }
 114                         else if(firstElement!=null){
 115                             showViewer(part, (IStructuredSelection) selection);
 116                             return;
 117                         }
 118                     }
 119                 }
 120                 showEmptyPage();
 121         }
 122
 123         /** {@inheritDoc} */
 124         @Override
 125         public void changed(Object object) {
 126             viewer.expandToLevel(2);
 127             viewer.refresh();
 128             if(object != null){
 129                 StructuredSelection selection = new StructuredSelection(object);
 130                 viewer.setSelection(selection, true);
 131             }
 132             //TODO: should be replaced with the possibility to set views dirty
 133             // when we move to Eclipse 4
 134             // take a look at ISaveblePart
 135             if(part instanceof BulkEditor && !(object instanceof SpecimenOrObservationBase<?>)){
 136                 ((BulkEditor) part).forceDirty();
 137             }
 138             super.changed(object);
 139         }
 140
 141         /** {@inheritDoc} */
 142         @Override
 143         public Viewer getViewer() {
 144                 return viewer;
 145         }
 146
 147         @Override
 148     public boolean onComplete() {
 149                 return true;
 150         }
 151 }