/**
* License Agreement.
*
* Rich Faces - Natural Ajax for Java Server Faces (JSF)
*
* Copyright (C) 2007 Exadel, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1 as published by the Free Software Foundation.
*
* This library 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 library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.richfaces.component;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import javax.el.ELContext;
import javax.el.ValueExpression;
import javax.faces.FacesException;
import javax.faces.application.FacesMessage;
import javax.faces.component.EditableValueHolder;
import javax.faces.component.NamingContainer;
import javax.faces.component.UIComponent;
import javax.faces.component.UIComponentBase;
import javax.faces.component.UIInput;
import javax.faces.component.UIMessage;
import javax.faces.component.UIViewRoot;
import javax.faces.context.FacesContext;
import javax.faces.event.AbortProcessingException;
import javax.faces.event.FacesEvent;
import javax.faces.event.PhaseId;
import javax.faces.validator.Validator;
import org.ajax4jsf.component.AjaxComponent;
import org.ajax4jsf.component.AjaxContainer;
import org.ajax4jsf.component.AjaxSupport;
import org.ajax4jsf.component.EventValueExpression;
import org.ajax4jsf.context.AjaxContext;
import org.ajax4jsf.el.ELContextWrapper;
import org.ajax4jsf.event.AjaxEvent;
import org.ajax4jsf.event.AjaxListener;
import org.ajax4jsf.renderkit.AjaxContainerRenderer;
import org.ajax4jsf.renderkit.AjaxRendererUtils;
import org.ajax4jsf.util.CapturingELResolver;
import org.richfaces.event.ValidationEvent;
import org.richfaces.validator.HibernateValidator;
import org.richfaces.validator.FacesBeanValidator;
import org.richfaces.validator.GraphValidator;
/**
* JSF component class
*
*/
public abstract class UIGraphValidator extends UIComponentBase {
public static final String COMPONENT_TYPE = "org.richfaces.GraphValidator";
public static final String COMPONENT_FAMILY = "org.richfaces.GraphValidator";
public static final String STATE_ATTRIBUTE_PREFIX = COMPONENT_TYPE+NamingContainer.SEPARATOR_CHAR;
/**
* Get object for validation
*
* @return
*/
public abstract Object getValue();
/**
* Set object for validation
*
* @param newvalue
*/
public abstract void setValue(Object newvalue);
/**
* Get object for validation
*
* @return
*/
public abstract String getSummary();
/**
* Set object for validation
*
* @param newvalue
*/
public abstract void setSummary(String newvalue);
/**
* Get set of profiles for validation
*
* @return
*/
public abstract Object getProfiles();
/**
* Set set of profiles for validation
*
* @param newvalue
*/
public abstract void setProfiles(Object newvalue);
/**
* Get graph validator Id.
* @return
*/
public abstract String getType();
/**
* Set graph validator Id.
* @param newvalue
*/
public abstract void setType(String newvalue);
@Override
public void processDecodes(FacesContext context) {
GraphValidatorState validatorState = null;
// Detect value EL-expression.
ValueExpression valueExpression = getValueExpression("value");
if (null != valueExpression) {
Object value = getValue();
if (null !=value && value instanceof Cloneable) {
try {
ELContext initialELContext = context.getELContext();
CapturingELResolver capturingELResolver = new CapturingELResolver(initialELContext.getELResolver());
Class<?> type = valueExpression.getType(new ELContextWrapper(initialELContext, capturingELResolver));
if(null != type) {
validatorState = new GraphValidatorState();
Method method = value.getClass().getDeclaredMethod("clone");
method.setAccessible(true);
validatorState.cloned = method.invoke(value);
validatorState.base = capturingELResolver.getBase();
validatorState.property = capturingELResolver.getProperty();
validatorState.active = true;
context.getExternalContext().getRequestMap().put(getStateId(context), validatorState);
}
} catch (NoSuchMethodException e) {
// do nothing, that is really not possible.
} catch (InvocationTargetException e) {
throw new FacesException(e);
} catch (IllegalArgumentException e) {
// do nothing, that is really not possible.
} catch (IllegalAccessException e) {
throw new FacesException(e);
}
}
}
super.processDecodes(context);
if(null != validatorState){
validatorState.active = false;
}
}
protected String getStateId(FacesContext context) {
String stateId = STATE_ATTRIBUTE_PREFIX+getClientId(context);
return stateId;
}
protected GraphValidatorState getValidatorState(FacesContext context){
return (GraphValidatorState) context.getExternalContext().getRequestMap().get(getStateId(context));
}
@Override
public void processValidators(FacesContext context) {
GraphValidatorState validatorState = getValidatorState(context);
if(null != validatorState){
validatorState.active = true;
}
super.processValidators(context);
if(null != validatorState){
validatorState.active = false;
validateObject(context, validatorState.cloned);
context.getExternalContext().getRequestMap().remove(getStateId(context));
}
}
@Override
public void processUpdates(FacesContext context) {
super.processUpdates(context);
Object value = getValue();
validateObject(context, value);
}
private void validateObject(FacesContext context, Object value) {
if (null != value) {
Validator validator = context.getApplication().createValidator(getType());
if (validator instanceof GraphValidator) {
GraphValidator graphValidator = (GraphValidator) validator;
String[] messages = graphValidator.validateGraph(context,this, value,getProfiles());
if (null != messages) {
context.renderResponse();
// send all validation messages.
String clientId = getClientId(context);
for (String msg : messages) {
// TODO - create Summary message ?
String summary = null != getSummary() ? getSummary() + msg : msg;
context.addMessage(clientId, new FacesMessage(
FacesMessage.SEVERITY_ERROR, summary, msg));
}
}
} else {
throw new FacesException("Validator "+FacesBeanValidator.BEAN_VALIDATOR_TYPE+" does not implement GraphValidator");
}
}
}
@Override
public void encodeBegin(FacesContext context) throws IOException {
super.encodeBegin(context);
FacesBeanValidator validator = (FacesBeanValidator)context.getApplication().createValidator(getType());
validator.setSummary(getSummary());
ValueExpression expression = getValueExpression("profiles");
if(null != expression){
validator.setProfiles(expression);
} else {
validator.setProfiles(getProfiles());
}
setupValidators(this,validator);
}
@Override
public void encodeChildren(FacesContext context) throws IOException {
if(isRendered()){
for (UIComponent child : getChildren()) {
if(child.isRendered()){
child.encodeAll(context);
}
}
}
}
private void setupValidators(UIComponent component,
Validator validator) {
Iterator<UIComponent> facetsAndChildren = component.getFacetsAndChildren();
while (facetsAndChildren.hasNext()) {
UIComponent child = facetsAndChildren.next();
if (child instanceof EditableValueHolder) {
EditableValueHolder input = (EditableValueHolder) child;
setupValidator(input,validator);
}
setupValidators(child, validator);
}
}
/**
* @param input
*/
private void setupValidator(EditableValueHolder input,Validator validator) {
Validator[] validators = input.getValidators();
for (int i = 0; i < validators.length; i++) {
if(validators[i] instanceof FacesBeanValidator){
return;
}
}
input.addValidator(validator);
}
@Override
public boolean getRendersChildren() {
return true;
}
public static final class GraphValidatorState {
private boolean active = false;
private Object cloned;
private Object base;
private Object property;
/**
* @return the active
*/
public boolean isActive() {
return active;
}
/**
* @param active the active to set
*/
public void setActive(boolean active) {
this.active = active;
}
/**
* @return the cloned
*/
public Object getCloned() {
return cloned;
}
/**
* @param cloned the cloned to set
*/
public void setCloned(Object cloned) {
this.cloned = cloned;
}
/**
* @return the base
*/
public Object getBase() {
return base;
}
/**
* @param base the base to set
*/
public void setBase(Object base) {
this.base = base;
}
/**
* @return the property
*/
public Object getProperty() {
return property;
}
/**
* @param property the property to set
*/
public void setProperty(Object property) {
this.property = property;
}
public boolean isSameBase(Object base){
return (null == base && null == this.base)||(base == this.base);
}
public boolean isSameProperty(Object property){
if(null == this.property){
return null == property;
} else {
return this.property.equals(property);
}
}
public boolean isSame(Object base, Object property){
return isSameBase(base)&& isSameProperty(property)&& active;
}
}
}