EDIT

/**

* Copyright (C) 2018 EDIT

* European Distributed Institute of Taxonomy

* http://www.e-taxonomy.eu

*

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.taxeditor.ui.combo;

import java.util.ArrayList;

import java.util.Comparator;

import java.util.List;

import org.eclipse.jface.resource.FontDescriptor;

import org.eclipse.jface.util.PropertyChangeEvent;

import org.eclipse.swt.SWT;

import org.eclipse.swt.events.SelectionEvent;

import eu.etaxonomy.cdm.model.common.TermType;

import eu.etaxonomy.cdm.model.name.NameRelationshipType;

import eu.etaxonomy.taxeditor.preference.PreferencesUtil;

import eu.etaxonomy.taxeditor.store.CdmStore;

import eu.etaxonomy.taxeditor.store.TermManager;

import eu.etaxonomy.taxeditor.ui.element.CdmFormFactory;

import eu.etaxonomy.taxeditor.ui.element.CdmPropertyChangeEvent;

import eu.etaxonomy.taxeditor.ui.element.ICdmFormElement;

/**

 * @author k.luther

 * @since 08.10.2018

 *

 */

public class NameRelationshipTypeCombo<T extends InverseTermWrapper> extends AbstractComboElement<T> {

   List<InverseTermWrapper> wrapperList = new ArrayList<>();

   T wrapperSelection;

   List<NameRelationshipType> terms = new ArrayList();

   boolean useAbbrevLabel;

    /**

     * @param cdmFormFactory

     * @param parentElement

     * @param termType

     * @param labelString

     * @param selection

     * @param addEmptyElement

     * @param style

     * @param useAbbrevLabel

     * @param comparator

     */

    public NameRelationshipTypeCombo(CdmFormFactory cdmFormFactory, ICdmFormElement parentElement,

            String labelString,  boolean addEmptyElement, int style, boolean useAbbrevLabel,

            Comparator<T> comparator) {

     super(cdmFormFactory, parentElement);

     // labelString, selection, addEmptyElement, style,  comparator

     terms = getTermManager().getPreferredTerms(TermType.NameRelationshipType);

     this.useAbbrevLabel = useAbbrevLabel;

     populateTerms();

     label.setText(labelString);

     FontDescriptor descriptor = FontDescriptor.createFrom(label.getFont());

  // setStyle method returns a new font descriptor for the given style

     descriptor = descriptor.setStyle(SWT.ITALIC);

     label.setFont(descriptor.createFont(label.getDisplay()));

     combo.addSelectionListener(this);

     combo.addDisposeListener(this);

     PreferencesUtil.getPreferenceStore().addPropertyChangeListener(this);

    }

    /**

     * Fills the combo with elements and sets up the convenience functions

     * for selection index

     *

     * @param preferredTerms

     */

    protected void populateTerms() {

        combo.removeAll();

        fillInverseTermWrapperList();

        int i = 1;

        for (InverseTermWrapper termWrapper : wrapperList) {

            String label = termWrapper.getLabel();

            combo.add(label);

            i++;

        }

    }

    /**

     *

     */

    private void fillInverseTermWrapperList() {

        for (NameRelationshipType term: terms){

            if (term.getInverseLabel(CdmStore.getDefaultLanguage()) != null && !term.getInverseLabel(CdmStore.getDefaultLanguage()).equals(term.getLabel(CdmStore.getDefaultLanguage()))){

                wrapperList.add(new InverseTermWrapper(term, true, useAbbrevLabel));

            }

            wrapperList.add(new InverseTermWrapper(term, false, useAbbrevLabel));

        }

    }

    /** {@inheritDoc} */

    @Override

    public void widgetSelected(SelectionEvent e) {

        wrapperSelection = (T) wrapperList.get(combo.getSelectionIndex());

        firePropertyChangeEvent(new CdmPropertyChangeEvent(this, e));

    }

    /** {@inheritDoc} */

    @Override

    public void propertyChange(PropertyChangeEvent event) {

        super.propertyChange(event);

        if (event != null

                && PreferencesUtil.PREFERRED_TERMS_CHANGE.equals(event

                        .getProperty())) {

            populateTerms();

        }

    }

    @Override

    public T getSelection() {

        return wrapperSelection;

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public void setSelection(T selection) {

        // TODO Auto-generated method stub

    }

    protected TermManager getTermManager() {

        return CdmStore.getTermManager();

    }

}