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.store.CdmStore;
  38 import eu.etaxonomy.taxeditor.view.AbstractCdmEditorViewPart;
  39 import eu.etaxonomy.taxeditor.view.detail.DetailsViewPart;
  40 import eu.etaxonomy.taxeditor.view.supplementaldata.SupplementalDataViewPart;
  41
  42 /**
  43  * @author n.hoffmann
  44  * @created Jun 15, 2010
  45  * @version 1.0
  46  */
  47 public class MediaViewPart extends AbstractCdmEditorViewPart implements IPartContentHasDetails, IPartContentHasSupplementalData {
  48
  49         public static final String ID = "eu.etaxonomy.taxeditor.editor.view.media";
  50
  51
  52         private TreeViewer viewer;
  53
  54         /** {@inheritDoc} */
  55         @Override
  56         public void createViewer(Composite parent) {
  57
  58                 viewer = new TreeViewer(new Tree(parent, SWT.MULTI | SWT.H_SCROLL
  59                                 | SWT.V_SCROLL | SWT.FULL_SELECTION));
  60
  61                 viewer.setContentProvider(new MediaContentProvider());
  62                 viewer.setLabelProvider(new MediaLabelProvider());
  63                 viewer.setAutoExpandLevel(2);
  64
  65                 // Propagate selection from viewer
  66                 getSite().setSelectionProvider(viewer);
  67
  68                 // Add context menu to tree
  69                 MenuManager menuMgr = new MenuManager();
  70                 menuMgr.add(new GroupMarker(IWorkbenchActionConstants.MB_ADDITIONS));
  71                 getSite().registerContextMenu(menuMgr, viewer);
  72
  73                 Control control = viewer.getControl();
  74                 Menu menu = menuMgr.createContextMenu(control);
  75                 control.setMenu(menu);
  76
  77         }
  78
  79         /** {@inheritDoc} */
  80         @Override
  81         protected ISelection getInitialSelection() {
  82                 if(getEditor() != null){
  83                         return new StructuredSelection(getEditor().getEditorInput());
  84                 }
  85
  86                 return super.getInitialSelection();
  87         }
  88
  89         /** {@inheritDoc} */
  90         @Override
  91     protected void selectionChanged_internal(IWorkbenchPart part, ISelection selection) {
  92             if(part==this){
  93                 return;
  94             }
  95                 if(AbstractUtility.getActiveEditor() == null){
  96                         showEmptyPage();
  97                         return;
  98                 }
  99
 100         if (part instanceof DetailsViewPart || part instanceof SupplementalDataViewPart
 101                 || part instanceof DescriptiveViewPart) {
 102             // do not show empty page as these views are also used to edit the
 103             // description selected in this view
 104             return;
 105         }
 106
 107                 if(part instanceof IPartContentHasMedia && ((IPartContentHasMedia) part).canAttachMedia()){
 108                     if(selection instanceof IStructuredSelection){
 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                             && firstElement instanceof IDescribable<?>){
 116                             showViewer(part, (IStructuredSelection) selection);
 117                             return;
 118                         }
 119                     }
 120                 }
 121                 showEmptyPage();
 122         }
 123
 124         /** {@inheritDoc} */
 125         @Override
 126         public void changed(Object object) {
 127             viewer.expandToLevel(2);
 128             viewer.refresh();
 129             if(object != null){
 130                 StructuredSelection selection = new StructuredSelection(object);
 131                 viewer.setSelection(selection, true);
 132             }
 133             //TODO: should be replaced with the possibility to set views dirty
 134             // when we move to Eclipse 4
 135             // take a look at ISaveblePart
 136             if(part instanceof BulkEditor && !(object instanceof SpecimenOrObservationBase<?>)){
 137                 ((BulkEditor) part).forceDirty();
 138                 IStructuredSelection selection = (IStructuredSelection) ((BulkEditor) part).getSelectionProvider().getSelection();
 139             ((BulkEditor) part).changed(selection.getFirstElement());
 140
 141             }
 142             super.changed(object);
 143         }
 144
 145         /** {@inheritDoc} */
 146         @Override
 147         public Viewer getViewer() {
 148                 return viewer;
 149         }
 150
 151         @Override
 152     public boolean onComplete() {
 153                 return true;
 154         }
 155 }