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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.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.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.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 SingleReadRemoveHandler {
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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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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(selectedTreeNode!=null && selectedTreeNode.getParent()!=null &&
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selectedTreeNode.getValue() instanceof SingleRead && selectedTreeNode.getParent().getValue() instanceof Sequence) {
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Sequence sequence = (Sequence) selectedTreeNode.getParent().getValue();
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sequence.removeSingleRead((SingleRead) selectedTreeNode.getValue());
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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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}
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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_PART) MPart part,
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@Optional @Named(IServiceConstants.ACTIVE_SELECTION) TreeNode selectedTreeNode,
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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 SingleRead && ((DerivateView) part.getObject()).getMultiLinkSingleReads().contains(value);
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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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