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package eu.etaxonomy.taxeditor.editor.view.derivate.handler;
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import javax.inject.Named;
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import org.eclipse.e4.core.di.annotations.CanExecute;
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import org.eclipse.e4.core.di.annotations.Execute;
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import org.eclipse.e4.ui.model.application.ui.basic.MPart;
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import org.eclipse.e4.ui.model.application.ui.menu.MHandledMenuItem;
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import org.eclipse.e4.ui.services.IServiceConstants;
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import org.eclipse.jface.util.LocalSelectionTransfer;
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import org.eclipse.jface.viewers.ISelection;
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import org.eclipse.jface.viewers.TreeNode;
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import eu.etaxonomy.cdm.api.service.molecular.ISequenceService;
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import eu.etaxonomy.cdm.model.molecular.Sequence;
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import eu.etaxonomy.cdm.model.molecular.SingleRead;
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import eu.etaxonomy.taxeditor.editor.EditorUtil;
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import eu.etaxonomy.taxeditor.editor.view.derivate.DerivateView;
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import eu.etaxonomy.taxeditor.model.MessagingUtils;
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import eu.etaxonomy.taxeditor.store.CdmStore;
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public class SingleReadReuseHandler {
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@Execute
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public void execute(@Named(IServiceConstants.ACTIVE_PART) MPart part, @Named(IServiceConstants.ACTIVE_SELECTION) TreeNode selectedTreeNode){
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ISelection clipBoardSelection = LocalSelectionTransfer.getTransfer().getSelection();
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TreeNode clipBoardTreeNode = EditorUtil.getTreeNodeOfSelection(clipBoardSelection);
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DerivateView derivateView = (DerivateView)part.getObject();
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if(derivateView.isDirty()){
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MessagingUtils.warningDialog(DerivateView.VIEW_HAS_UNSAVED_CHANGES, this, DerivateView.YOU_NEED_TO_SAVE_BEFORE_PERFORMING_THIS_ACTION);
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return;
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}
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if(clipBoardTreeNode!=null && clipBoardTreeNode.getValue() instanceof SingleRead
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&& selectedTreeNode!=null && selectedTreeNode.getValue() instanceof Sequence){
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SingleRead singleRead = (SingleRead)clipBoardTreeNode.getValue();
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Sequence sequence = (Sequence)selectedTreeNode.getValue();
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sequence.addSingleRead(singleRead);
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CdmStore.getService(ISequenceService.class).merge(sequence);
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derivateView.getConversationHolder().commit();
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derivateView.refreshTree();
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LocalSelectionTransfer.getTransfer().setSelection(null);
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}
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derivateView.updateLabelCache();
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derivateView.refreshTree();
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}
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@CanExecute
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public boolean canExecute(@Named(IServiceConstants.ACTIVE_SELECTION) TreeNode selectedTreeNode, MHandledMenuItem menuItem) {
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boolean canExecute = false;
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Object value = selectedTreeNode.getValue();
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TreeNode clipboardNode = EditorUtil.getTreeNodeOfSelection(LocalSelectionTransfer.getTransfer().getSelection());
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if(value instanceof Sequence && clipboardNode!=null && clipboardNode.getValue() instanceof SingleRead
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&& !((Sequence) value).getSingleReads().contains(clipboardNode.getValue())){
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canExecute = true;
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}
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menuItem.setVisible(canExecute);
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return canExecute;
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}
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}
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