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/**
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*
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*/
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package eu.etaxonomy.taxeditor.editor.view.descriptive;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Map;
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import org.eclipse.jface.viewers.ITreeContentProvider;
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import org.eclipse.jface.viewers.Viewer;
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import eu.etaxonomy.cdm.model.description.DescriptionBase;
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import eu.etaxonomy.cdm.model.description.FeatureTree;
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import eu.etaxonomy.cdm.model.description.TaxonDescription;
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import eu.etaxonomy.cdm.model.taxon.Taxon;
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import eu.etaxonomy.taxeditor.editor.TaxonEditorInput;
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import eu.etaxonomy.taxeditor.model.FeatureNodeContainer;
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import eu.etaxonomy.taxeditor.model.FeatureNodeContainerTree;
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import eu.etaxonomy.taxeditor.preference.PreferencesUtil;
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import eu.etaxonomy.taxeditor.store.TermStore;
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/**
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* <p>DescriptiveContentProvider class.</p>
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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 DescriptiveContentProvider implements ITreeContentProvider {
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private static final Object[] NO_CHILDREN = new Object[0];
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private Map<TaxonDescription, FeatureNodeContainerTree> featureNodeContainerCache;
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/**
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* <p>Constructor for DescriptiveContentProvider.</p>
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*
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* @param featureNodeContainerCache a {@link java.util.Map} object.
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*/
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public DescriptiveContentProvider(Map<TaxonDescription, FeatureNodeContainerTree> featureNodeContainerCache) {
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this.featureNodeContainerCache = featureNodeContainerCache;
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}
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/* (non-Javadoc)
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* @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)
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*/
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/** {@inheritDoc} */
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public Object[] getChildren(Object parentElement) {
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if (parentElement instanceof TaxonEditorInput) {
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return getDescriptions((TaxonEditorInput) parentElement).toArray();
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}
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else if (parentElement instanceof TaxonDescription) {
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if ( ! ((TaxonDescription) parentElement).isImageGallery()) {
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TaxonDescription description = (TaxonDescription) parentElement;
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FeatureNodeContainerTree containerTree = getContainerTreeForDesription(description);
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return containerTree.getRoot().getChildren().toArray();
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}
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}
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else if (parentElement instanceof FeatureNodeContainer){
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FeatureNodeContainer container = (FeatureNodeContainer) parentElement;
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if(container.isLeaf()){
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return container.getDescriptionElements().toArray();
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}else{
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return container.getChildren().toArray();
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}
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}
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return NO_CHILDREN;
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}
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private FeatureNodeContainerTree getContainerTreeForDesription(TaxonDescription description){
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if(! featureNodeContainerCache.containsKey(description)){
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FeatureNodeContainerTree containerTree = new FeatureNodeContainerTree(description, getFeatureTree(description));
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featureNodeContainerCache.put(description, containerTree);
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}
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return featureNodeContainerCache.get(description);
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}
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/** {@inheritDoc} */
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@Override
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public boolean hasChildren(Object element) {
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if (element instanceof TaxonDescription){
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TaxonDescription description = (TaxonDescription) element;
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FeatureNodeContainerTree containerTree = featureNodeContainerCache.get(description);
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if(containerTree != null && containerTree.getRoot() != null){
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return containerTree.getRoot().getChildren().size() != 0;
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}
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}
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return getChildren(element).length != 0;
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}
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/**
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* Retrieves the feature tree associated with the given description
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*
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* TODO as of now this is always the same thing because feature trees may not be associated
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* to descriptions yet.
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*
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* @param description
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* @return
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*/
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private FeatureTree getFeatureTree(DescriptionBase description){
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FeatureTree featureTree = null;
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// TODO change this to the feature tree associated with this taxon description
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if (description.hasStructuredData()){
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featureTree = PreferencesUtil.getDefaultFeatureTreeForStructuredDescription();
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}else{
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featureTree = PreferencesUtil.getDefaultFeatureTreeForTextualDescription();
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}
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// create a transient tree with all features if none was selected
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if(featureTree == null){
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featureTree = FeatureTree.NewInstance(TermStore.getFeatures());
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}
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return featureTree;
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}
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/**
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* Get all descriptions associated with the given TaxonEditorInput
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*
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* @param parentElement
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* @return
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*/
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private List<DescriptionBase> getDescriptions(TaxonEditorInput parentElement) {
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Taxon taxon = parentElement.getTaxon();
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List<DescriptionBase> descriptions = new ArrayList<DescriptionBase>();
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for(DescriptionBase description : taxon.getDescriptions()){
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if(! description.isImageGallery()){
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descriptions.add(description);
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}
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}
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return descriptions;
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}
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/* (non-Javadoc)
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* @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object)
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*/
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/** {@inheritDoc} */
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public Object getParent(Object element) {
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return null;
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}
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/* (non-Javadoc)
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* @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
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*/
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/** {@inheritDoc} */
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public Object[] getElements(Object inputElement) {
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return getChildren(inputElement);
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}
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/* (non-Javadoc)
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* @see org.eclipse.jface.viewers.IContentProvider#dispose()
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*/
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/**
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* <p>dispose</p>
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*/
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public void dispose() {
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featureNodeContainerCache.clear();
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}
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/* (non-Javadoc)
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* @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
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*/
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/** {@inheritDoc} */
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public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {}
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}
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