/*
* Copyright 2004, 2005, 2006 Odysseus Software GmbH
*
* 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 de.odysseus.calyxo.forms.impl;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.Locale;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.jsp.el.Expression;
import javax.servlet.jsp.el.VariableResolver;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import de.odysseus.calyxo.base.Message;
import de.odysseus.calyxo.forms.FormData;
import de.odysseus.calyxo.forms.FormInput;
import de.odysseus.calyxo.forms.FormInputResult;
import de.odysseus.calyxo.forms.FormInputValues;
import de.odysseus.calyxo.forms.conf.FieldConfig;
import de.odysseus.calyxo.forms.conf.InputConfig;
/**
* Instances of this class implement the
* {@link de.odysseus.calyxo.forms.FormInput} interface. An input
* contains several input fields, according to its input configuration
* element.
*
* @author Christoph Beck
*/
public class Input implements FormInput {
private static Log log = LogFactory.getLog(InputFieldResult.class);
private InputConfig inputConfig;
private ArrayList fields;
private Message message;
/**
* Constructor
*/
public Input(Factory factory, InputConfig inputConfig, Locale locale) {
super();
this.inputConfig = inputConfig;
fields = new ArrayList();
Iterator fieldConfigs = inputConfig.getFieldConfigs();
while (fieldConfigs.hasNext()) {
FieldConfig fieldConfig = (FieldConfig)fieldConfigs.next();
fields.add(new InputField(factory, fieldConfig, locale, inputConfig.isArray()));
}
}
/*
* (non-Javadoc)
* @see de.odysseus.calyxo.forms.FormInput#getName()
*/
public String getName() {
return inputConfig.getName();
}
/**
* Get {@link InputField} objects
*/
public Iterator getFields() {
return fields.iterator();
}
/*
* (non-Javadoc)
* @see de.odysseus.calyxo.forms.FormInput#format(javax.servlet.http.HttpServletRequest, de.odysseus.calyxo.forms.FormData)
*/
public Object format(HttpServletRequest request, FormData bean) throws Exception {
for (int i = 0; i < fields.size(); i++) {
InputField field = (InputField)fields.get(i);
String property = field.getFieldConfig().getProperty();
Object value = bean._getProperty(property);
if (isArray()) {
return field.formatArray(request, value);
} else if (value != null && !value.equals(field.getFieldConfig().getNull())) {
return field.formatScalar(request, value);
}
}
return ((InputField)fields.get(0)).format(request, bean);
}
/*
* (non-Javadoc)
* @see de.odysseus.calyxo.forms.FormInput#format(javax.servlet.http.HttpServletRequest, de.odysseus.calyxo.forms.FormData, int)
*/
public String format(HttpServletRequest request, FormData bean, int index, String notAvailableResult) throws Exception {
for (int i = 0; i < fields.size(); i++) {
InputField field = (InputField)fields.get(i);
String property = field.getFieldConfig().getProperty();
Object[] values = (Object[])bean._getProperty(property);
if (values != null && index < values.length) {
return field.formatScalar(request, values[index]);
}
}
return notAvailableResult;
}
/*
* (non-Javadoc)
* @see de.odysseus.calyxo.forms.FormInput#validate(javax.servlet.http.HttpServletRequest, de.odysseus.calyxo.forms.FormInputValues)
*/
public FormInputResult validate(HttpServletRequest request, FormInputValues params, VariableResolver resolver) {
InputField field = null;
ValidatorSequenceValue value = null;
Iterator fields = this.fields.iterator();
while (fields.hasNext()) {
field = (InputField)fields.next();
value = field.execute(request, params);
if (value.isValid()) {
break;
}
}
return new InputResult(this, new InputFieldResult(field, value), resolver);
}
/**
* Get message.
*/
public Message getMessage() {
if (message == null && inputConfig.getMessageConfig() != null) {
message = new MessageImpl(inputConfig.getMessageConfig());
}
return message;
}
/*
* (non-Javadoc)
* @see de.odysseus.calyxo.forms.FormInput#isArray()
*/
public boolean isArray() {
return inputConfig.isArray();
}
/*
* (non-Javadoc)
* @see de.odysseus.calyxo.forms.FormInput#isRelaxed(javax.servlet.jsp.el.VariableResolver)
*/
public boolean isRelaxed(VariableResolver resolver) {
Expression expr = inputConfig.getParsedRelaxExpression();
if (expr != null) {
Object result = null;
try {
result = expr.evaluate(resolver);
} catch (Exception e) {
log.error("Evaluation error in '" + inputConfig.getRelax() + "'", e);
return false;
}
if (result instanceof Boolean) {
return ((Boolean)result).booleanValue();
}
log.error("Bad evaluation result in '" + inputConfig.getRelax() + "': " + result);
}
return false;
}
/*
* (non-Javadoc)
* @see de.odysseus.calyxo.forms.FormInput#isIgnored(javax.servlet.jsp.el.VariableResolver)
*/
public boolean isIgnored(VariableResolver resolver) {
Expression expr = inputConfig.getParsedIgnoreExpression();
if (expr != null) {
Object result = null;
try {
result = expr.evaluate(resolver);
} catch (Exception e) {
log.error("Evaluation error in '" + inputConfig.getIgnore() + "'", e);
return false;
}
if (result instanceof Boolean) {
return ((Boolean)result).booleanValue();
}
log.error("Bad evaluation result in '" + inputConfig.getIgnore() + "': " + result);
}
return false;
}
}