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/**
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*
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*/
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package eu.etaxonomy.taxeditor.editor.view.descriptive.handler;
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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.DescriptionBase;
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import eu.etaxonomy.cdm.model.description.DescriptionElementBase;
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import eu.etaxonomy.cdm.model.media.Media;
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import eu.etaxonomy.taxeditor.model.FeatureNodeContainer;
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/**
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* Property tester used by the description tree menu.
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*
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* @author p.ciardelli
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* @author n.hoffmann
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* @version $Id: $
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*/
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public class DescriptionsMenuPropertyTester extends PropertyTester {
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private static final String MEDIA = "isMedia";
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private static final String FEATURE_NODE_CONTAINER = "isFeatureNodeContainer";
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private static final String DESCRIPTION = "isDescription";
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private static final String DESCRIPTION_ELEMENT = "isDescriptionElement";
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private static final String DELETABLE = "isDeletable";
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/* (non-Javadoc)
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* @see org.eclipse.core.expressions.IPropertyTester#test(java.lang.Object, java.lang.String, java.lang.Object[], java.lang.Object)
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*/
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/** {@inheritDoc} */
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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(MEDIA.equals(property)){
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return isMedia(selectedElements);
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}
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else if(FEATURE_NODE_CONTAINER.equals(property)){
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return isFeatureNodeContainer(selectedElements);
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}
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else if(DESCRIPTION.equals(property)){
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return isDescription(selectedElements);
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}
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else if(DESCRIPTION_ELEMENT.equals(property)){
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return isDescriptionElement(selectedElements);
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}
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else if(DELETABLE.equals(property)){
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return isDeletable(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 isFeatureNodeContainer(Object[] selectedElements) {
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for (Object object : selectedElements){
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if(!(object instanceof FeatureNodeContainer)){
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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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private boolean isDeletable(Object[] selectedElements) {
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boolean result = false;
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for (Object object : selectedElements) {
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if((object instanceof DescriptionBase)
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|| (object instanceof DescriptionElementBase)
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|| (object instanceof Media)
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|| (object instanceof FeatureNodeContainer)){
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result = true;
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}else{
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return false;
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}
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}
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return result;
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}
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private boolean isDescriptionElement(Object[] selectedElements) {
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for (Object object : selectedElements){
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if(!(object instanceof DescriptionElementBase)){
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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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private boolean isDescription(Object[] selectedElements) {
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for (Object object : selectedElements){
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if(!(object instanceof DescriptionBase)){
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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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private boolean isMedia(Object[] selectedElements) {
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for (Object object : selectedElements){
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if(!(object instanceof Media)){
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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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