Application: gvSIG desktop

package org.gvsig.expressionevaluator.swing.impl;

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.expressionevaluator.Expression;

import org.gvsig.expressionevaluator.ExpressionEvaluatorLocator;

import org.gvsig.expressionevaluator.History;

import org.gvsig.tools.util.LabeledValue;

import org.gvsig.tools.util.LabeledValueImpl;

/**

 *

 * @author jjdelcerro

 */

public class DefaultHistoryPanel 

        extends DefaultHistoryPanelView 

    {

    private Expression currentExpression;

    public DefaultHistoryPanel() {

        this.initComponents();

    }

    private void initComponents() {

        History history = ExpressionEvaluatorLocator.getManager().getHistory();

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

        for (Expression expression : history) {

            model.addElement(new LabeledValueImpl<>(

                    StringUtils.abbreviate(expression.getPhrase(), 45),

                    expression

                )

            );

        }

        this.currentExpression = null;

        this.lstHistory.setModel(model);

        this.lstHistory.addListSelectionListener(new ListSelectionListener() {

            @Override

            public void valueChanged(ListSelectionEvent e) {

                if( e.getValueIsAdjusting()) {

                    return;

                }

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

                if( value == null ) {

                    return;

                }

                currentExpression = value.getValue();

                txtFormula.setText(currentExpression.getPhrase());

                txtFormula.setCaretPosition(0);

            }

        });

        this.setPreferredSize(new Dimension(400, 300));

    }

    public Expression getExpression() {

        return this.currentExpression;

    }

}