/**
* 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.util.ArrayList;
import java.util.IdentityHashMap;
import java.util.List;
import java.util.Map;
import javax.inject.Inject;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.border.EmptyBorder;
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.IconUtils;
import org.datacleaner.util.WidgetFactory;
import org.datacleaner.widgets.DCComboBox;
import org.jdesktop.swingx.VerticalLayout;
/**
* {@link PropertyWidget} for Class arrays. Displays class options as a set of
* comboboxes and plus/minus buttons to grow/shrink the array.
*/
public class MultipleClassesPropertyWidget extends AbstractPropertyWidget<Class<?>[]> {
private final DCPanel _outerPanel;
private final Map<JComponent, DCComboBox<Class<?>>> _comboBoxDecorations;
@Inject
public MultipleClassesPropertyWidget(final ConfiguredPropertyDescriptor propertyDescriptor,
final ComponentBuilder componentBuilder) {
super(componentBuilder, propertyDescriptor);
_comboBoxDecorations = new IdentityHashMap<>();
_outerPanel = new DCPanel();
_outerPanel.setLayout(new VerticalLayout(2));
final JButton addButton = WidgetFactory.createSmallButton(IconUtils.ACTION_ADD_DARK);
addButton.addActionListener(e -> {
addComboBox(String.class, true);
fireValueChanged();
});
final JButton removeButton = WidgetFactory.createSmallButton(IconUtils.ACTION_REMOVE_DARK);
removeButton.addActionListener(e -> {
final int componentCount = _outerPanel.getComponentCount();
if (componentCount > 0) {
removeComboBox();
_outerPanel.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(_outerPanel, BorderLayout.CENTER);
outerPanel.add(buttonPanel, BorderLayout.EAST);
add(outerPanel);
}
@Override
public void initialize(final Class<?>[] value) {
updateComponents(value);
}
public void updateComponents(Class<?>[] values) {
if (values == null) {
values = new Class[2];
}
final Class<?>[] previousValues = getValue();
if (!EqualsBuilder.equals(values, previousValues)) {
for (int i = 0; i < Math.min(previousValues.length, values.length); i++) {
// modify comboboxes
if (!EqualsBuilder.equals(previousValues[i], values[i])) {
final Component decoration = _outerPanel.getComponent(i);
final DCComboBox<Class<?>> component = _comboBoxDecorations.get(decoration);
component.setSelectedItem(values[i]);
}
}
while (_outerPanel.getComponentCount() < values.length) {
// add comboboxes if there are too few
final Class<?> nextValue = values[_outerPanel.getComponentCount()];
addComboBox(nextValue, false);
}
while (_outerPanel.getComponentCount() > values.length) {
removeComboBox();
}
_outerPanel.updateUI();
}
}
private void removeComboBox() {
final int componentCount = _outerPanel.getComponentCount();
if (componentCount == 0) {
return;
}
final int index = componentCount - 1;
final Component decoration = _outerPanel.getComponent(index);
_comboBoxDecorations.remove(decoration);
_outerPanel.remove(index);
}
private void addComboBox(final Class<?> value, final boolean updateUI) {
final DCComboBox<Class<?>> comboBox = SingleClassPropertyWidget.createClassComboBox(true);
if (value != null) {
comboBox.setSelectedItem(value);
}
comboBox.addListener(item -> fireValueChanged());
final int index = _outerPanel.getComponentCount();
final JComponent decoration = decorateComboBox(comboBox, index);
_comboBoxDecorations.put(decoration, comboBox);
_outerPanel.add(decoration);
if (updateUI) {
_outerPanel.updateUI();
}
}
protected JComponent decorateComboBox(final DCComboBox<Class<?>> comboBox, final int index) {
return comboBox;
}
@Override
public Class<?>[] getValue() {
final Component[] components = _outerPanel.getComponents();
final List<Class<?>> result = new ArrayList<>();
for (int i = 0; i < components.length; i++) {
final Component decoration = components[i];
final DCComboBox<Class<?>> comboBox = _comboBoxDecorations.get(decoration);
final Class<?> cls = comboBox.getSelectedItem();
result.add(cls);
}
return result.toArray(new Class<?>[result.size()]);
}
@Override
protected void setValue(final Class<?>[] value) {
updateComponents(value);
}
@Override
public boolean isSet() {
final Class<?>[] value = getValue();
if (value.length == 0) {
return false;
}
for (int i = 0; i < value.length; i++) {
if (value[i] == null) {
return false;
}
}
return true;
}
}