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/*
 * #%L
 * JAXX :: Widgets
 * $Id: GenericListModel.java 2455 2012-07-30 18:47:43Z tchemit $
 * $HeadURL: https://nuiton.org/svn/jaxx/tags/jaxx-2.8.5/jaxx-runtime/src/main/java/jaxx/runtime/swing/model/GenericListModel.java $
 * %%
 * Copyright (C) 2008 - 2012 CodeLutin
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as 
 * published by the Free Software Foundation, either version 3 of the 
 * License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public 
 * License along with this program.  If not, see
 * .
 * #L%
 */
package jaxx.runtime.swing.model;

import com.google.common.collect.Lists;
import java.util.Collection;
import java.util.List;
import javax.swing.ComboBoxModel;
import javax.swing.DefaultListModel;
import javax.swing.event.ListDataEvent;
import javax.swing.event.ListDataListener;

/**
 * @author sletellier 
 */
public class GenericListModel extends GenericListSelectionModel implements ComboBoxModel {

    public GenericListModel() {
        super(new DefaultListModel());
    }

    public GenericListModel(Collection values) {
        this();
        setElements(values);
    }

    public void setElements(Collection values) {
        Collection oldValues = getElements();
        Collection oldSelectedValues = getSelectedValues();
        clearSelection();
        fireSelectionRemoved(oldSelectedValues);

        clearElements();
        fireValuesRemoved(oldValues);

        for (B value : values) {
            getListModel().addElement(value);
        }

        fireSelectionAdded(values);
    }

    public void clearElements() {
        Collection elements = getElements();
        getListModel().clear();

        fireValuesRemoved(elements);
    }

    public Collection getElements() {
        int size = getListModel().getSize();
        Collection result = Lists.newArrayList();
        for (int i=0;i valuesToAdd) {
        for (B value : valuesToAdd) {
            getListModel().addElement(value);
        }

        fireValuesAdded(valuesToAdd);
    }

    public void removeElements(Collection values) {
        for (B value : values) {
            getListModel().removeElement(value);
        }
        unSelectItems(values);

        fireValuesRemoved(values);
    }

    @Override
    public void setSelectedItem(Object anItem) {
        List oldValue = getSelectedValues();
        fireSelectionRemoved(oldValue);

        setSelectedValues(Lists.newArrayList((B) anItem));

        List newValues = getSelectedValues();
        fireSelectionAdded(newValues);
        fireContentsChanged(this, -1, -1);
        firePropertyChange(PROPERTY_SELECTED_VALUE, oldValue, newValues);
    }

    @Override
    public B getSelectedItem() {
        List selectedValues = getSelectedValues();
        if (selectedValues.isEmpty()) {
            return null;
        }
        return selectedValues.get(0);
    }

    @Override
    public int getSize() {
        return getListModel().size();
    }

    @Override
    public Object getElementAt(int index) {
        return getListModel().get(index);
    }

    @Override
    public void addListDataListener(ListDataListener l) {
        getListModel().addListDataListener(l);
    }

    @Override
    public void removeListDataListener(ListDataListener l) {
        getListModel().removeListDataListener(l);
    }

    protected void fireContentsChanged(Object source, int index0, int index1) {
        Object[] listeners = getListModel().getListDataListeners();
        ListDataEvent e = null;

        for (int i = listeners.length - 2; i >= 0; i -= 2) {
            if (listeners[i] == ListDataListener.class) {
                if (e == null) {
                    e = new ListDataEvent(source, ListDataEvent.CONTENTS_CHANGED, index0, index1);
                }
                ((ListDataListener)listeners[i+1]).contentsChanged(e);
            }
        }
    }
}