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/*
* Copyright 2000-2014 Vaadin Ltd.
*
* 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 com.vaadin.ui;
import java.text.Normalizer.Form;
import java.util.Date;
import com.vaadin.data.Container;
import com.vaadin.data.Property;
import com.vaadin.legacy.ui.LegacyCheckBox;
import com.vaadin.legacy.ui.LegacyDateField;
import com.vaadin.legacy.ui.LegacyField;
import com.vaadin.legacy.ui.LegacyTextField;
import com.vaadin.shared.util.SharedUtil;
/**
* This class contains a basic implementation for {@link TableFieldFactory}. The
* class is singleton, use {@link #get()} method to get reference to the
* instance.
*
* <p>
* There are also some static helper methods available for custom built field
* factories.
*
*/
public class DefaultFieldFactory implements TableFieldFactory {
private static final DefaultFieldFactory instance = new DefaultFieldFactory();
/**
* Singleton method to get an instance of DefaultFieldFactory.
*
* @return an instance of DefaultFieldFactory
*/
public static DefaultFieldFactory get() {
return instance;
}
protected DefaultFieldFactory() {
}
@Override
public LegacyField createField(Container container, Object itemId,
Object propertyId, Component uiContext) {
Property containerProperty = container.getContainerProperty(itemId,
propertyId);
Class<?> type = containerProperty.getType();
LegacyField<?> field = createFieldByPropertyType(type);
field.setCaption(createCaptionByPropertyId(propertyId));
return field;
}
/**
* If name follows method naming conventions, convert the name to spaced
* upper case text. For example, convert "firstName" to "First Name"
*
* @param propertyId
* @return the formatted caption string
*/
public static String createCaptionByPropertyId(Object propertyId) {
return SharedUtil.propertyIdToHumanFriendly(propertyId);
}
/**
* Creates fields based on the property type.
* <p>
* The default field type is {@link LegacyTextField}. Other field types
* generated by this method:
* <p>
* <b>Boolean</b>: {@link CheckBox}.<br/>
* <b>Date</b>: {@link LegacyDateField}(resolution: day).<br/>
* <b>Item</b>: {@link Form}. <br/>
* <b>default field type</b>: {@link LegacyTextField}.
* <p>
*
* @param type
* the type of the property
* @return the most suitable generic {@link LegacyField} for given type
*/
public static LegacyField<?> createFieldByPropertyType(Class<?> type) {
// Null typed properties can not be edited
if (type == null) {
return null;
}
// Date field
if (Date.class.isAssignableFrom(type)) {
final LegacyDateField df = new LegacyDateField();
df.setResolution(LegacyDateField.RESOLUTION_DAY);
return df;
}
// Boolean field
if (Boolean.class.isAssignableFrom(type)) {
return new LegacyCheckBox();
}
return new LegacyTextField();
}
}
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