it.vige.greenarea.bpm.custom.ui.form.EnumFormPropertyRenderer.java Source code

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Here is the source code for it.vige.greenarea.bpm.custom.ui.form.EnumFormPropertyRenderer.java

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/******************************************************************************
 * Vige, Home of Professional Open Source Copyright 2010, Vige, and           *
 * individual contributors by the @authors tag. See the copyright.txt in the  *
 * distribution for a full listing of individual contributors.                *
 * 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 it.vige.greenarea.bpm.custom.ui.form;

import static it.vige.greenarea.Constants.OPERAZIONE;
import static org.activiti.explorer.Messages.FORM_FIELD_REQUIRED;

import java.lang.reflect.Method;
import java.util.Map;
import java.util.Map.Entry;

import org.activiti.engine.form.FormProperty;
import org.activiti.engine.impl.form.EnumFormType;

import com.vaadin.ui.ComboBox;
import com.vaadin.ui.Field;

public class EnumFormPropertyRenderer<T> extends GreenareaAbstractFormPropertyRenderer<T> {

    private static final long serialVersionUID = 1L;

    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(FORM_FIELD_REQUIRED, getPropertyLabel(formProperty)));
        comboBox.setEnabled(formProperty.isWritable());
        comboBox.setNullSelectionAllowed(false);

        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());

                String selectedValue = formProperty.getValue();
                if ((selectedValue != null && selectedValue.equals(enumEntry.getKey())) || itemToSelect == null) {
                    itemToSelect = enumEntry.getKey(); // select first
                    // element
                }

                if (enumEntry.getValue() != null) {
                    comboBox.setItemCaption(enumEntry.getKey(), enumEntry.getValue());
                }
            }
        }

        // Select first element
        if (itemToSelect != null) {
            comboBox.select(itemToSelect);
        }

        if (formProperty.getId().contains(OPERAZIONE))
            comboBox.setVisible(false);
        return comboBox;
    }

    @Override
    protected boolean visible(Method method, java.lang.reflect.Field field) {
        return true;
    }
}