/*
 * $Id$
 *
 * Copyright (c) 2002, 2009, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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 Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 */
package com.sun.interview.wizard;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.NumberFormat;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JPanel;
import com.sun.interview.FloatQuestion;
import com.sun.interview.Question;

public class FloatQuestionRenderer
    implements QuestionRenderer
{
    public JComponent getQuestionRendererComponent(Question qq, ActionListener listener) {
	FloatQuestion q = (FloatQuestion) qq;

	lwb = q.getLowerBound();
	upb = q.getUpperBound();
	range = upb - lwb;
	suggs = q.getSuggestions();

        return createTextField(q, listener);
    }

    public String getInvalidValueMessage(Question q) {
	return null;
    }

    protected JPanel createTextField(final FloatQuestion q, ActionListener listener) {
	int w = 1;
	while (range >= 10) {
	    range /= 10;
	    w++;
	}
	if (lwb < 0)
	    w++;
	// add in room for fractions
	w += 5;

	w = Math.min(w, 20);

	String[] strSuggs;
	if (suggs == null)
	    strSuggs = null;
	else {
	    strSuggs = new String[suggs.length];
	    for (int i = 0; i < suggs.length; i++)
		strSuggs[i] = String.valueOf(suggs[i]);
	}

	final float defVal = q.getDefaultValue();
	if (Float.isNaN(defVal))
	    resetBtn = null;
	else {
	    resetBtn = new JButton(i18n.getString("flt.reset.btn"));
	    resetBtn.setName("flt.reset.btn");
	    resetBtn.setMnemonic(i18n.getString("flt.reset.mne").charAt(0));
	    resetBtn.setToolTipText(i18n.getString("flt.reset.tip"));
	}

	final TypeInPanel p =  new TypeInPanel("flt.field", 
					       q, 
					       w,
					       strSuggs, 
					       resetBtn,
					       listener);

	if (resetBtn != null) {
	    resetBtn.addActionListener(new ActionListener() {
		    public void actionPerformed(ActionEvent e) {
			NumberFormat fmt = NumberFormat.getNumberInstance();  // will be locale-specific
			p.setValue(fmt.format(new Double(defVal)));
		    }
		});
	}

	return p;
    }

    
    protected float lwb;
    protected float upb;
    protected float range;
    protected float[] suggs;
    
    protected JButton resetBtn;

    private static final I18NResourceBundle i18n = I18NResourceBundle.getDefaultBundle();
}
