de.codesourcery.eve.skills.ui.components.impl.PriceInfoComponent.java Source code

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Here is the source code for de.codesourcery.eve.skills.ui.components.impl.PriceInfoComponent.java

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/**
 * Copyright 2004-2009 Tobias Gierke <tobias.gierke@code-sourcery.de>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package de.codesourcery.eve.skills.ui.components.impl;

import java.awt.GridBagLayout;
import java.awt.TextArea;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;

import org.apache.commons.lang.StringUtils;

import de.codesourcery.eve.skills.datamodel.PriceInfo;
import de.codesourcery.eve.skills.ui.components.AbstractEditorComponent;

public class PriceInfoComponent extends AbstractEditorComponent {

    private final String message;
    private final PriceInfo.Type priceType;

    private JTextField minPrice = new JTextField("0.00");
    private JTextField avgPrice = new JTextField("0.00");
    private JTextField maxPrice = new JTextField("0.00");

    private final ActionListener listener = new ActionListener() {

        @Override
        public void actionPerformed(ActionEvent e) {
            if (e.getSource() instanceof JTextField) {
                validateInputField((JTextField) e.getSource());
            }
        }

    };

    public PriceInfoComponent(String message, PriceInfo.Type infoType) {
        if (message == null) {
            throw new IllegalArgumentException("message cannot be NULL");
        }
        if (infoType == null) {
            throw new IllegalArgumentException("infoType cannot be NULL");
        }

        infoType.assertNotAny();

        this.message = message;
        this.priceType = infoType;
    }

    @Override
    protected JButton createCancelButton() {
        return new JButton("Cancel");
    }

    @Override
    protected JButton createOkButton() {
        return new JButton("ok");
    }

    public double getMinPrice() {
        return getValue(minPrice);
    }

    public double getMaxPrice() {
        return getValue(maxPrice);
    }

    public double getAveragePrice() {
        return getValue(avgPrice);
    }

    protected double getValue(JTextField input) throws NumberFormatException {
        final String value = input.getText();
        if (StringUtils.isBlank(value)) {
            throw new NumberFormatException("You need to enter a positive number");
        }

        final double val = Double.parseDouble(value);
        if (val < 0) {
            throw new NumberFormatException("You need to enter a positive number");
        }
        return val;

    }

    protected void validateInputField(JTextField input) {
        try {
            getValue(input);
        } catch (NumberFormatException e) {
        }
    }

    @Override
    protected JPanel createPanelHook() {

        final JPanel panel = new JPanel();
        panel.setLayout(new GridBagLayout());

        final String kind;

        switch (priceType) {
        case BUY:
            kind = "buy";
            break;
        case SELL:
        default:
            throw new RuntimeException(
                    "Invalid data in switch/case: PriceInfo.Type.ALL cannot be queried from user");
        }

        minPrice.addActionListener(listener);
        maxPrice.addActionListener(listener);
        avgPrice.addActionListener(listener);

        final TextArea desc = new TextArea();
        desc.setText(message);
        desc.setEditable(false);

        panel.add(desc, constraints(0, 0).width(2).resizeBoth().end());

        panel.add(new JLabel("Minimum " + kind + " price"), constraints(0, 1).useRelativeWidth().end());
        panel.add(minPrice, constraints(1, 1).useRemainingWidth().end());

        panel.add(new JLabel("Average " + kind + " price"), constraints(0, 2).useRelativeWidth().end());
        panel.add(avgPrice, constraints(1, 2).useRemainingWidth().end());

        panel.add(new JLabel("Maximum " + kind + " price"), constraints(0, 3).useRelativeWidth().end());
        panel.add(maxPrice, constraints(1, 3).useRemainingWidth().end());

        return panel;
    }

    @Override
    protected boolean hasValidInput() {
        return true;
    }

}