/**
* DataCleaner (community edition)
* Copyright (C) 2014 Neopost - Customer Information Management
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program 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 Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.datacleaner.widgets.properties;
import java.awt.BorderLayout;
import java.awt.Component;
import java.lang.reflect.Array;
import java.text.NumberFormat;
import java.text.ParseException;
import javax.swing.JButton;
import javax.swing.border.EmptyBorder;
import javax.swing.event.DocumentEvent;
import javax.swing.text.JTextComponent;
import org.apache.metamodel.util.EqualsBuilder;
import org.datacleaner.descriptors.ConfiguredPropertyDescriptor;
import org.datacleaner.job.builder.ComponentBuilder;
import org.datacleaner.panels.DCPanel;
import org.datacleaner.util.DCDocumentListener;
import org.datacleaner.util.IconUtils;
import org.datacleaner.util.ReflectionUtils;
import org.datacleaner.util.StringUtils;
import org.datacleaner.util.WidgetFactory;
import org.jdesktop.swingx.JXTextField;
import org.jdesktop.swingx.VerticalLayout;
/**
* {@link PropertyWidget} for Number arrays. Displays number arrays as a set of
* text boxes and plus/minus buttons to grow/shrink the array.
*/
public abstract class AbstractMultipleNumberPropertyWidget<N> extends AbstractPropertyWidget<N> {
private final NumberFormat _numberFormat = NumberFormat.getInstance();
private final DCPanel _textFieldPanel;
protected AbstractMultipleNumberPropertyWidget(final ComponentBuilder componentBuilder,
final ConfiguredPropertyDescriptor propertyDescriptor) {
super(componentBuilder, propertyDescriptor);
_textFieldPanel = new DCPanel();
_textFieldPanel.setLayout(new VerticalLayout(2));
final N currentValue = getCurrentValue();
updateComponents(currentValue);
final JButton addButton = WidgetFactory.createSmallButton(IconUtils.ACTION_ADD_DARK);
addButton.addActionListener(e -> {
addTextField(null, true);
fireValueChanged();
});
final JButton removeButton = WidgetFactory.createSmallButton(IconUtils.ACTION_REMOVE_DARK);
removeButton.addActionListener(e -> {
final int componentCount = _textFieldPanel.getComponentCount();
if (componentCount > 0) {
_textFieldPanel.remove(componentCount - 1);
_textFieldPanel.updateUI();
fireValueChanged();
}
});
final DCPanel buttonPanel = new DCPanel();
buttonPanel.setBorder(new EmptyBorder(0, 4, 0, 0));
buttonPanel.setLayout(new VerticalLayout(2));
buttonPanel.add(addButton);
buttonPanel.add(removeButton);
final DCPanel outerPanel = new DCPanel();
outerPanel.setLayout(new BorderLayout());
outerPanel.add(_textFieldPanel, BorderLayout.CENTER);
outerPanel.add(buttonPanel, BorderLayout.EAST);
add(outerPanel);
}
@SuppressWarnings("unchecked")
private N createArray(final int length) {
return (N) Array.newInstance(getPropertyDescriptor().getBaseType(), length);
}
public void updateComponents(N values) {
if (values == null) {
values = createArray(2);
}
final N previousValues = getValue();
if (!EqualsBuilder.equals(values, previousValues)) {
for (int i = 0; i < Math.min(Array.getLength(previousValues), Array.getLength(values)); i++) {
// modify text boxes
if (!EqualsBuilder.equals(Array.get(previousValues, i), Array.get(values, i))) {
final JTextComponent component = (JTextComponent) _textFieldPanel.getComponent(i);
component.setText(_numberFormat.format(Array.get(values, i)));
}
}
while (_textFieldPanel.getComponentCount() < Array.getLength(values)) {
// add text boxes if there are too few
final Object nextValue = Array.get(values, _textFieldPanel.getComponentCount());
addTextField(nextValue, false);
}
while (_textFieldPanel.getComponentCount() > Array.getLength(values)) {
// remove text boxes if there are too many
_textFieldPanel.remove(_textFieldPanel.getComponentCount() - 1);
}
_textFieldPanel.updateUI();
}
}
private void addTextField(final Object value, final boolean updateUI) {
final JXTextField textField = WidgetFactory.createTextField();
if (value != null) {
textField.setText(_numberFormat.format(value));
}
textField.getDocument().addDocumentListener(new DCDocumentListener() {
@Override
protected void onChange(final DocumentEvent e) {
fireValueChanged();
}
});
_textFieldPanel.add(textField);
if (updateUI) {
_textFieldPanel.updateUI();
}
}
@Override
public N getValue() {
final Component[] components = _textFieldPanel.getComponents();
final N result = createArray(components.length);
for (int i = 0; i < components.length; i++) {
final JXTextField textField = (JXTextField) components[i];
final String stringValue = textField.getText();
setInArray(result, i, convertToNumber(stringValue));
}
return result;
}
@Override
protected void setValue(final N value) {
updateComponents(value);
}
private void setInArray(final Object array, final int index, Number number) {
final Class<?> baseType = getPropertyDescriptor().getBaseType();
if (baseType.isPrimitive()) {
if (number == null) {
number = 0;
}
if (baseType == byte.class) {
Array.setByte(array, index, number.byteValue());
} else if (baseType == short.class) {
Array.setShort(array, index, number.shortValue());
} else if (baseType == int.class) {
Array.setInt(array, index, number.intValue());
} else if (baseType == long.class) {
Array.setLong(array, index, number.longValue());
} else if (baseType == float.class) {
Array.setFloat(array, index, number.floatValue());
} else if (baseType == double.class) {
Array.setDouble(array, index, number.doubleValue());
}
} else {
Array.set(array, index, number);
}
}
private Number convertToNumber(final String stringValue) {
if (StringUtils.isNullOrEmpty(stringValue)) {
return null;
}
final Class<?> type = getPropertyDescriptor().getBaseType();
try {
final Number number = _numberFormat.parse(stringValue);
if (type != Number.class) {
if (ReflectionUtils.isInteger(type)) {
return Integer.valueOf(number.intValue());
} else if (ReflectionUtils.isLong(type)) {
return Long.valueOf(number.longValue());
} else if (ReflectionUtils.isDouble(type)) {
return Double.valueOf(number.doubleValue());
} else if (ReflectionUtils.isShort(type)) {
return Short.valueOf(number.shortValue());
} else if (ReflectionUtils.isByte(type)) {
return Byte.valueOf(number.byteValue());
} else if (ReflectionUtils.isFloat(type)) {
return Float.valueOf(number.floatValue());
}
}
return number;
} catch (final ParseException e) {
throw new IllegalStateException("Cannot parse to number: " + stringValue);
}
}
}