/* 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 org.activiti.explorer.ui.form;
import java.util.Map;
import java.util.Map.Entry;
import org.activiti.engine.form.FormProperty;
import org.activiti.engine.impl.form.EnumFormType;
import org.activiti.explorer.Messages;
import com.vaadin.ui.ComboBox;
import com.vaadin.ui.Field;
/**
* @author Frederik Heremans
* @author Joram Barrez
*/
public class EnumFormPropertyRenderer extends AbstractFormPropertyRenderer {
public EnumFormPropertyRenderer() {
super(EnumFormType.class);
}
@SuppressWarnings("unchecked")
@Override
public Field getPropertyField(FormProperty formProperty) {
ComboBox comboBox = new ComboBox(getPropertyLabel(formProperty));
comboBox.setRequired(formProperty.isRequired());
comboBox.setRequiredError(getMessage(Messages.FORM_FIELD_REQUIRED, getPropertyLabel(formProperty)));
comboBox.setEnabled(formProperty.isWritable());
comboBox.setNullSelectionAllowed(false);
Object firstItemId = null;
Object itemToSelect = null;
Map<String, String> values = (Map<String, String>) formProperty.getType().getInformation("values");
if (values != null) {
for (Entry<String, String> enumEntry : values.entrySet()) {
// Add value and label (if any)
comboBox.addItem(enumEntry.getKey());
if (firstItemId == null) {
firstItemId = enumEntry.getKey(); // select first element
}
String selectedValue = formProperty.getValue();
if (selectedValue != null && selectedValue.equals(enumEntry.getKey())) {
itemToSelect = enumEntry.getKey(); // select first element
}
if (enumEntry.getValue() != null) {
comboBox.setItemCaption(enumEntry.getKey(), enumEntry.getValue());
}
}
}
// Select value or first element
if (itemToSelect != null) {
comboBox.select(itemToSelect);
} else if (firstItemId != null) {
comboBox.select(firstItemId);
}
return comboBox;
}
}