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/**
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*
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*/
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package eu.etaxonomy.taxeditor.featuretree;
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import org.eclipse.core.expressions.PropertyTester;
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import org.eclipse.jface.viewers.IStructuredSelection;
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import eu.etaxonomy.cdm.model.description.FeatureTree;
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/**
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* Property tester used by the feature tree menu.
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*
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* @author pplitzner
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* @since Jan 30, 2019
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*
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*/
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public class FeatureTreePropertyTester extends PropertyTester {
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private static final String FEATURE_TREE= "isFeatureTree"; //$NON-NLS-1$
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@Override
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public boolean test(Object receiver, String property, Object[] args,
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Object expectedValue) {
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Object[] selectedElements = ((IStructuredSelection) receiver).toArray();
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if(selectedElements.length == 0){
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// nothing selected so all tests should fail
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return false;
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}
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if(FEATURE_TREE.equals(property)){
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return isFeatureTree(selectedElements);
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}
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else{
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return false;
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}
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}
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private boolean isFeatureTree(Object[] selectedElements) {
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for (Object object : selectedElements){
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if(!(object instanceof FeatureTree)){
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return false;
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}
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}
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return true;
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}
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}
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