eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/key/polytomous/handler/CreateSiblingNodeHandler.java

   1 package eu.etaxonomy.taxeditor.editor.key.polytomous.handler;
   2
   3 import org.eclipse.core.commands.AbstractHandler;
   4 import org.eclipse.core.commands.ExecutionEvent;
   5 import org.eclipse.core.commands.ExecutionException;
   6 import org.eclipse.core.commands.common.NotDefinedException;
   7 import org.eclipse.core.commands.operations.IUndoContext;
   8 import org.eclipse.jface.dialogs.MessageDialog;
   9 import org.eclipse.jface.viewers.IStructuredSelection;
  10 import org.eclipse.ui.IEditorPart;
  11 import org.eclipse.ui.handlers.HandlerUtil;
  12
  13 import eu.etaxonomy.cdm.model.description.PolytomousKey;
  14 import eu.etaxonomy.cdm.model.description.PolytomousKeyNode;
  15 import eu.etaxonomy.taxeditor.editor.EditorUtil;
  16 import eu.etaxonomy.taxeditor.editor.key.KeyEditor;
  17 import eu.etaxonomy.taxeditor.editor.key.polytomous.IPolytomousKeyEditorPage;
  18 import eu.etaxonomy.taxeditor.editor.key.polytomous.PolytomousKeyListEditor;
  19 import eu.etaxonomy.taxeditor.editor.key.polytomous.operation.CreateNodeOperation;
  20 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  21 import eu.etaxonomy.taxeditor.operation.AbstractPostOperation;
  22
  23 /**
  24  * Handler responsible for creating sibling nodes of Polytomous Key Nodes
  25  * @author c.mathew
  26  *
  27  */
  28
  29 public class CreateSiblingNodeHandler extends AbstractHandler {
  30
  31         /*
  32          * (non-Javadoc)
  33          *
  34          * @see
  35          * org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.
  36          * ExecutionEvent)
  37          */
  38         @Override
  39         public Object execute(ExecutionEvent event) throws ExecutionException {
  40
  41                 IEditorPart editor = HandlerUtil.getActiveEditor(event);
  42
  43                 if (editor instanceof KeyEditor) {
  44                         IPolytomousKeyEditorPage editorPage = (IPolytomousKeyEditorPage) ((KeyEditor) editor)
  45                                         .getActiveEditor();
  46
  47                         if (editorPage instanceof PolytomousKeyListEditor) {
  48
  49                                 IStructuredSelection selection = (IStructuredSelection) HandlerUtil
  50                                                 .getCurrentSelection(event);
  51
  52                                 if (selection.getFirstElement() instanceof PolytomousKeyNode) {
  53                                         try {
  54                                                 String label = event.getCommand().getName();
  55                                                 IUndoContext undoContext = EditorUtil.getUndoContext();
  56
  57                                                 PolytomousKeyNode keyNode = (PolytomousKeyNode) selection
  58                                                                 .getFirstElement();
  59
  60                                                 AbstractPostOperation operation = new CreateNodeOperation(
  61                                                                 label, undoContext, keyNode.getParent(), editorPage);
  62                                                 EditorUtil.executeOperation(operation);
  63                                         } catch (NotDefinedException e) {
  64                                                 MessagingUtils.warn(getClass(), "Command name not set.");
  65                                         }
  66                                 } else {
  67                                         MessageDialog.openInformation(
  68                                                         EditorUtil.getShell(),
  69                                                         "No Key Node Selected",
  70                                                         "Please right-click on a specific key node to create a new sibling key node.");
  71                                 }
  72                         }
  73                 }
  74
  75                 return null;
  76         }
  77
  78 }
  79