eu.etaxonomy.taxeditor.molecular/src/main/java/eu/etaxonomy/taxeditor/molecular/handler/AlignmentEditorCopyHandler.java

   1 package eu.etaxonomy.taxeditor.molecular.handler;
   2
   3
   4 import info.bioinfweb.libralign.alignmentarea.AlignmentArea;
   5 import info.bioinfweb.libralign.alignmentarea.selection.SelectionModel;
   6 import info.bioinfweb.libralign.model.utils.AlignmentModelUtils;
   7
   8 import java.util.Map;
   9
  10 import org.eclipse.core.commands.ExecutionEvent;
  11 import org.eclipse.swt.dnd.TextTransfer;
  12 import org.eclipse.swt.dnd.Transfer;
  13 import org.eclipse.ui.commands.IElementUpdater;
  14 import org.eclipse.ui.menus.UIElement;
  15
  16 import eu.etaxonomy.taxeditor.molecular.editor.AlignmentEditor;
  17
  18
  19
  20 /**
  21  * Handler that copies the currently selected nucleotides from an alignment editor to the clipboard.
  22  * <p>
  23  * The copied contents either come from the single reads or the consensus sequence alignment area,
  24  * depending on which component currently has the focus. If none of these components has the focus,
  25  * nothing will be copied, even if nucleotides are currently selected.
  26  * <p>
  27  * If the selection contains parts of multiple sequence, these are separated by the line separator
  28  * of the current operating system.
  29  *
  30  * @author Ben Stöver
  31  * @date 25.08.2015
  32  */
  33 public class AlignmentEditorCopyHandler extends AbstractFocusedAlignmentAreaHandler implements IElementUpdater {
  34     @Override
  35         @SuppressWarnings("unchecked")
  36         protected void doExecute2(ExecutionEvent event, AlignmentEditor editor, AlignmentArea focusedArea) {
  37         SelectionModel selection = focusedArea.getSelection();
  38         if (!selection.isEmpty()) {
  39                 editor.CLIPBOARD.setContents(new Object[]{AlignmentModelUtils.selectionAsString(focusedArea, false)},
  40                         new Transfer[]{TextTransfer.getInstance()});
  41         }
  42         }
  43
  44
  45         @Override
  46         public boolean isEnabled() {
  47                 AlignmentEditor editor = getActiveAlignmentEditor();
  48                 if (editor != null) {
  49                         AlignmentArea focusedArea = editor.getFocusedArea();
  50                         if (focusedArea != null) {
  51                                 return !focusedArea.getSelection().isEmpty();
  52                         }
  53                 }
  54                 return false;
  55         }
  56
  57
  58         @Override
  59         public void updateElement(UIElement element, @SuppressWarnings("rawtypes") Map parameters) {
  60                 setBaseEnabled(isEnabled());
  61     }
  62 }