org.datacleaner.widgets.properties.SingleColumnNamePropertyWidget Maven / Gradle / Ivy
/**
* DataCleaner (community edition)
* Copyright (C) 2014 Free Software Foundation, Inc.
*
* 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 javax.inject.Inject;
import org.apache.metamodel.schema.Column;
import org.apache.metamodel.schema.MutableColumn;
import org.apache.metamodel.schema.MutableTable;
import org.apache.metamodel.schema.Table;
import org.apache.metamodel.util.CollectionUtils;
import org.apache.metamodel.util.MutableRef;
import org.datacleaner.descriptors.ConfiguredPropertyDescriptor;
import org.datacleaner.job.builder.ComponentBuilder;
import org.datacleaner.widgets.DCComboBox.Listener;
import org.datacleaner.widgets.SourceColumnComboBox;
/**
* Property widget for a {@link String} that represents a {@link Column} name.
*/
public final class SingleColumnNamePropertyWidget extends AbstractPropertyWidget {
private final SourceColumnComboBox _comboBox;
private final MutableRef _tableRef;
@Inject
public SingleColumnNamePropertyWidget(final ConfiguredPropertyDescriptor propertyDescriptor,
final ComponentBuilder componentBuilder) {
super(componentBuilder, propertyDescriptor);
_tableRef = new MutableRef<>();
Enum[] enumConstants = (Enum[]) propertyDescriptor.getType().getEnumConstants();
if (!propertyDescriptor.isRequired()) {
enumConstants = CollectionUtils.array(new Enum[] { null }, enumConstants);
}
_comboBox = new SourceColumnComboBox();
final String currentValue = getCurrentValue();
setValue(currentValue);
addComboListener(item -> fireValueChanged());
add(_comboBox);
}
/**
* Sets the table to use as a source for the available columns in the
* combobox.
*
* @param table
*/
public void setTable(final Table table) {
if (table != _tableRef.get()) {
_tableRef.set(table);
if (table == null) {
_comboBox.setEmptyModel();
} else {
_comboBox.setModel(table);
}
}
}
public void addComboListener(final Listener listener) {
_comboBox.addColumnSelectedListener(listener);
}
@Override
public String getValue() {
final Column column = _comboBox.getSelectedItem();
if (column == null) {
return null;
}
return column.getName();
}
@Override
protected void setValue(final String value) {
if (value == null) {
_comboBox.setSelectedItem(null);
return;
}
if (_comboBox.getTable() == null) {
final MutableTable placeholderTable = new MutableTable("table");
placeholderTable.addColumn(new MutableColumn(value, placeholderTable));
_comboBox.setModel(placeholderTable);
}
_comboBox.setSelectedItem(value);
fireValueChanged(value);
}
}
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