Application: gvSIG desktop » Library: org.gvsig.tools

package org.gvsig.tools.swing.impl.bookmarkshistory;

import java.awt.Dimension;

import javax.swing.DefaultListModel;

import javax.swing.event.ListSelectionEvent;

import javax.swing.event.ListSelectionListener;

import org.apache.commons.lang3.StringUtils;

import org.gvsig.tools.bookmarksandhistory.History;

import org.gvsig.tools.util.LabeledValue;

import org.gvsig.tools.util.LabeledValueImpl;

/**

 *

 * @author jjdelcerro

 * @param <T>

 */

public class DefaultHistoryPanel<T> 

        extends DefaultHistoryPanelView 

    {

    private T currentValue;

    private final History<T> history;

    public DefaultHistoryPanel(History<T> history) {

        this.history = history;

        this.initComponents();

    }

    private void initComponents() {

        this.txtFormula.setLineWrap(true);

        this.txtFormula.setEditable(false);

        DefaultListModel<LabeledValue<T>> model = new DefaultListModel<>();

        for (T value : history) {

            String label;

            if( value instanceof LabeledValue ) {

                label = ((LabeledValue)value).getLabel();

            } else {

                label = value.toString();

            }

            label = StringUtils.abbreviate(label, 45);

            model.addElement(new LabeledValueImpl<>(label, value));

        }

        this.currentValue = null;

        this.lstHistory.setModel(model);

        this.lstHistory.addListSelectionListener(new ListSelectionListener() {

            @Override

            public void valueChanged(ListSelectionEvent e) {

                if( e.getValueIsAdjusting()) {

                    return;

                }

                LabeledValue<T> value = (LabeledValue<T>) lstHistory.getSelectedValue();

                if( value == null ) {

                    return;

                }

                currentValue = value.getValue();

                String label;

                if( currentValue instanceof LabeledValue ) {

                    label = ((LabeledValue)currentValue).getLabel();

                } else {

                    label = currentValue.toString();

                }

                txtFormula.setText(label);

                txtFormula.setCaretPosition(0);

            }

        });

        this.setPreferredSize(new Dimension(500, 400));

    }

    public T getSelectedValue() {

        return this.currentValue;

    }

}