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

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package org.gvsig.tools.swing.impl.pickercontroller.nullablespinner;

import java.text.DecimalFormat;

import java.text.NumberFormat;

import java.text.ParseException;

import java.util.Locale;

import javax.swing.JFormattedTextField;

import javax.swing.JSpinner;

import javax.swing.JTextField;

import javax.swing.text.DefaultFormatterFactory;

import javax.swing.text.NumberFormatter;

/**

 *

 * @author jjdelcerro

 */

public class NullableNumberEditor extends NullableEditor {

    private static String getDefaultPattern(Locale loc) {

        if (loc == null) {

            loc = Locale.getDefault();

        }

        DecimalFormat nf = (DecimalFormat) NumberFormat.getInstance(loc);

//        return nf.toLocalizedPattern();

        return nf.toPattern();

    }

    public NullableNumberEditor(JSpinner spinner) {

        this(spinner, getDefaultPattern(spinner.getLocale()));

    }

    public NullableNumberEditor(JSpinner spinner, String decimalFormatPattern) {

        this(spinner, new DecimalFormat(decimalFormatPattern));

    }

    private NullableNumberEditor(JSpinner spinner, DecimalFormat format) {

        super(spinner);

        if (!(spinner.getModel() instanceof NullableSpinnerNumberModel)) {

            throw new IllegalArgumentException(

                    "model not a NullableSpinnerNumberModel");

        }

        NullableSpinnerNumberModel model = (NullableSpinnerNumberModel) spinner.getModel();

        NumberFormatter formatter = new NullableNumberEditorFormatter(model,format, this.getTextField());

        DefaultFormatterFactory factory = new DefaultFormatterFactory(formatter);

        JFormattedTextField ftf = getTextField();

        ftf.setEditable(true);

        ftf.setFormatterFactory(factory);

        ftf.setHorizontalAlignment(JTextField.RIGHT);

        /* TBD - initializing the column width of the text field

             * is imprecise and doing it here is tricky because

             * the developer may configure the formatter later.

         */

        try {

            String maxString = formatter.valueToString(model.getMinimum());

            String minString = formatter.valueToString(model.getMaximum());

            ftf.setColumns(Math.max(maxString.length(),

                    minString.length()));

        } catch (ParseException e) {

            // TBD should throw a chained error here

        }

    }

    public DecimalFormat getFormat() {

        return (DecimalFormat) ((NumberFormatter) (getTextField().getFormatter())).getFormat();

    }

    public NullableSpinnerNumberModel getModel() {

        return (NullableSpinnerNumberModel) (getSpinner().getModel());

    }

}