EDIT

package eu.etaxonomy.taxeditor.ui.dialog.selection;

import java.text.Collator;

import java.util.Comparator;

import org.eclipse.core.runtime.Assert;

import org.eclipse.core.runtime.ListenerList;

import org.eclipse.jface.viewers.IColorProvider;

import org.eclipse.jface.viewers.IFontProvider;

import org.eclipse.jface.viewers.ILabelDecorator;

import org.eclipse.jface.viewers.ILabelProvider;

import org.eclipse.jface.viewers.ILabelProviderListener;

import org.eclipse.jface.viewers.LabelProvider;

import org.eclipse.jface.viewers.LabelProviderChangedEvent;

import org.eclipse.jface.viewers.StyledCellLabelProvider;

import org.eclipse.jface.viewers.StyledString;

import org.eclipse.jface.viewers.ViewerCell;

import org.eclipse.jface.viewers.DelegatingStyledCellLabelProvider.IStyledLabelProvider;

import org.eclipse.swt.SWT;

import org.eclipse.swt.graphics.Color;

import org.eclipse.swt.graphics.Font;

import org.eclipse.swt.graphics.GC;

import org.eclipse.swt.graphics.Image;

import org.eclipse.swt.graphics.Rectangle;

import org.eclipse.swt.widgets.Control;

import org.eclipse.swt.widgets.Display;

import org.eclipse.swt.widgets.Shell;

import org.eclipse.swt.widgets.Text;

import org.eclipse.ui.internal.IWorkbenchGraphicConstants;

import org.eclipse.ui.internal.WorkbenchImages;

import eu.etaxonomy.cdm.api.conversation.ConversationHolder;

import eu.etaxonomy.cdm.api.service.IReferenceService;

import eu.etaxonomy.cdm.model.reference.Reference;

import eu.etaxonomy.cdm.persistence.dto.UuidAndTitleCache;

import eu.etaxonomy.taxeditor.preference.IPreferenceKeys;

import eu.etaxonomy.taxeditor.preference.PreferencesUtil;

import eu.etaxonomy.taxeditor.store.CdmStore;

import eu.etaxonomy.taxeditor.ui.dialog.selection.CdmFilteredItemsSelectionDialog.ItemsFilter;

import eu.etaxonomy.taxeditor.ui.dialog.selection.CdmFilteredItemsSelectionDialog.ItemsListSeparator;

public class NomenclaturalReferenceSelectionDialog extends

		ReferenceSelectionDialog {

	protected NomenclaturalReferenceSelectionDialog(Shell shell,

			ConversationHolder conversation, String title, boolean multi,

			Reference reference) {

		super(shell, conversation, title, multi, reference);

		// TODO Auto-generated constructor stub

	}

	/* (non-Javadoc)

	 * @see eu.etaxonomy.taxeditor.dialogs.AbstractFilteredCdmResourceSelectionDialog#initModel()

	 */

	/** {@inheritDoc} */

	@Override

	protected void initModel() {

	    Control control = getPatternControl();

        String pattern = null;

        if (control != null){

            pattern = ((Text)control).getText();

        }

		model = CdmStore.getService(IReferenceService.class).getUuidAndAbbrevTitleCache(limitOfInitialElements, pattern);

	}

	/**

	 *

	 * @return

	 */

   @Override

	protected ILabelProvider createListLabelProvider() {

		return new FilteredCdmResourceAbbrevLabelProvider();

	}

	/**

	 * <p>select</p>

	 *

	 * @param reference a {@link eu.etaxonomy.cdm.model.reference.ReferenceBase} object.

	 * @param shell a {@link org.eclipse.swt.widgets.Shell} object.

	 * @param conversation a {@link eu.etaxonomy.cdm.api.conversation.ConversationHolder} object.

	 * @return a {@link eu.etaxonomy.cdm.model.reference.ReferenceBase} object.

	 */

	public static Reference select(Shell shell, ConversationHolder conversation, Reference reference) {

		NomenclaturalReferenceSelectionDialog dialog = new NomenclaturalReferenceSelectionDialog(shell, conversation,

				"Choose a reference", false, reference);

		return getSelectionFromDialog(dialog);

	}

	/* (non-Javadoc)

	 * @see org.eclipse.ui.dialogs.FilteredItemsSelectionDialog#createFilter()

	 */

	/** {@inheritDoc} */

	@Override

	protected ItemsFilter createFilter() {

		return new ItemsFilter() {

			/**

			 * Always returns false to enforce refiltering even if the pattern is equal

			 */

			@Override

			public boolean equalsFilter(ItemsFilter filter) {

				return false;

			}

			@Override

			public boolean isConsistentItem(Object item) {

				return false;

			}

			@Override

			public boolean matchItem(Object item) {

				return true;

//				String text = null;

//				if(item instanceof UuidAndTitleCache){

//					if (((UuidAndTitleCache) item).getAbbrevTitleCache() != null){

//						text = ((UuidAndTitleCache) item).getAbbrevTitleCache();

//					} else{

//						text = ((UuidAndTitleCache) item).getTitleCache();

//					}

//				}else if(item instanceof String){

//					text = (String) item;

//				}

//				return text != null ? matches(text) : false;

			}

		};

	}

	public class FilteredCdmResourceAbbrevLabelProvider extends LabelProvider {

		@Override

		public String getText(Object element) {

			if (element == null) {

				return null;

			}

			UuidAndTitleCache uuidAndTitleCache = (UuidAndTitleCache) element;

			String titleCache = uuidAndTitleCache.getTitleCache();

			String abbrevTitleCache = uuidAndTitleCache.getAbbrevTitleCache();

			if (abbrevTitleCache == null){

				abbrevTitleCache = "no abbrev title available";

			}

			abbrevTitleCache += " - " + titleCache;

			if(PreferencesUtil.getPreferenceStore().getBoolean(IPreferenceKeys.SHOW_ID_IN_ENTITY_SELECTION_DIAOLOG)){

				abbrevTitleCache += " ["+uuidAndTitleCache.getId()+"]";

			}

            return abbrevTitleCache;

		}

	};

	@Override

	protected Comparator getItemsComparator() {

		return new Comparator<UuidAndTitleCache>() {

			@Override

			public int compare(UuidAndTitleCache entity1,

					UuidAndTitleCache entity2) {

				Collator collator = Collator.getInstance();

				String compareString1 = null;

				if (entity1.getAbbrevTitleCache() == null){

					compareString1 = entity1.getTitleCache();

				}else{

					compareString1 = entity1.getAbbrevTitleCache();

				}

				String compareString2 = null;

				if (entity2.getAbbrevTitleCache() == null){

					compareString2 = entity2.getTitleCache();

				}else{

					compareString2 = entity2.getAbbrevTitleCache();

				}

				return collator.compare(compareString1, compareString2);

			}

		};

	}

}