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package eu.etaxonomy.taxeditor.molecular.editor.e4.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.core.di.annotations.Optional;
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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.e4.ui.workbench.modeling.EPartService;
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import org.eclipse.e4.ui.workbench.modeling.EPartService.PartState;
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import org.eclipse.jface.viewers.TreeNode;
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import org.eclipse.ui.PartInitException;
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import eu.etaxonomy.cdm.model.molecular.Sequence;
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import eu.etaxonomy.taxeditor.molecular.editor.AlignmentEditorInput;
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import eu.etaxonomy.taxeditor.molecular.editor.e4.AlignmentEditorE4;
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import eu.etaxonomy.taxeditor.molecular.l10n.Messages;
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/**
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* Opens the alignment editor from the CDM tree.
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*
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* @author Ben Stöver
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* @author pplitzner
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*/
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public class EditSequenceHandlerE4 {
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private org.apache.log4j.Logger logger = org.apache.log4j.Logger.getLogger(EditSequenceHandlerE4.class);
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@Execute
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public void execute(@Optional@Named(IServiceConstants.ACTIVE_SELECTION)TreeNode treeNodeOfSelection,
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EPartService partService) {
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if(treeNodeOfSelection != null && treeNodeOfSelection.getValue() instanceof Sequence){
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AlignmentEditorInput input = new AlignmentEditorInput(((Sequence)treeNodeOfSelection.getValue()).getUuid()); //TODO Should there always be a new instance created here? What if the specified CDM node is already opened in an AlignmentEditor? => Possible create Singleton that keeps instances by sequence objects in a map.
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try {
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MPart part = partService.createPart("eu.etaxonomy.taxeditor.molecular.editor.e4.AlignmentEditorE4");
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part = partService.showPart(part, PartState.ACTIVATE);
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AlignmentEditorE4 alignmentEditor = (AlignmentEditorE4) part.getObject();
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alignmentEditor.init(input);
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}
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catch (PartInitException e) {
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logger.error(Messages.EditSequenceHandler_COULD_NOT_OPEN, e);
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}
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}
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}
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@CanExecute
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public boolean canExecute(@Optional @Named(IServiceConstants.ACTIVE_SELECTION) TreeNode selectedTreeNode, MHandledMenuItem menuItem) {
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boolean canExecute = false;
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if(selectedTreeNode!=null){
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Object value = selectedTreeNode.getValue();
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canExecute = value instanceof Sequence;
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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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