/*
* JBoss, Home of Professional Open Source
* Copyright 2013, Red Hat, Inc. and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.richfaces.component;
import java.io.IOException;
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.el.ValueExpression;
import javax.faces.component.UIComponent;
import javax.faces.component.UIComponentBase;
import javax.faces.component.UINamingContainer;
import javax.faces.component.UniqueIdVendor;
import javax.faces.context.FacesContext;
import javax.faces.event.AbortProcessingException;
import javax.faces.event.FacesEvent;
import javax.faces.event.FacesListener;
import javax.faces.event.SystemEvent;
import javax.faces.event.SystemEventListener;
import javax.faces.render.Renderer;
import org.richfaces.renderkit.html.ScriptsRenderer;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
public abstract class UITransient extends UIComponentBase {
private String id;
private UIComponent parent;
private final Map<String, Object> attributesMap = new AttributesMap();
private String clientId;
public UITransient() {
super();
}
@Override
public Object saveState(FacesContext context) {
// This is transient component
return null;
}
@Override
public void restoreState(FacesContext context, Object state) {
// Do nothing, this component never saved
}
@Override
public boolean isTransient() {
return true;
}
@Override
public void setTransient(boolean newTransientValue) {
}
@Override
public Map<String, Object> getAttributes() {
return attributesMap;
}
@SuppressWarnings("deprecation")
@Override
public javax.faces.el.ValueBinding getValueBinding(String name) {
return null;
}
@SuppressWarnings("deprecation")
@Override
public void setValueBinding(String name, javax.faces.el.ValueBinding binding) {
// do nothing
}
@Override
public ValueExpression getValueExpression(String name) {
return null;
}
@Override
public void setValueExpression(String name, ValueExpression binding) {
// do nothing
}
@Override
public String getClientId(FacesContext context) {
if (context == null) {
throw new NullPointerException();
}
// if the clientId is not yet set
if (this.clientId == null) {
UIComponent namingContainerAncestor = this.getNamingContainer();
String parentId = null;
// give the parent the opportunity to first
// grab a unique clientId
if (namingContainerAncestor != null) {
parentId = namingContainerAncestor.getContainerClientId(context);
}
// now resolve our own client id
String clientId = getId();
if (clientId == null) {
if (null != namingContainerAncestor && namingContainerAncestor instanceof UniqueIdVendor) {
clientId = ((UniqueIdVendor) namingContainerAncestor).createUniqueId(context, null);
} else {
clientId = context.getViewRoot().createUniqueId();
}
setId(clientId);
}
if (parentId != null) {
StringBuilder idBuilder = new StringBuilder(parentId.length() + 1 + clientId.length());
clientId = idBuilder.append(parentId).append(UINamingContainer.getSeparatorChar(context)).append(clientId)
.toString();
}
// allow the renderer to convert the clientId
Renderer renderer = this.getRenderer(context);
if (renderer != null) {
this.clientId = renderer.convertClientId(context, clientId);
} else {
this.clientId = clientId;
}
}
return this.clientId;
}
@Override
public String getId() {
return this.id;
}
@Override
public void setId(String id) {
this.id = id;
this.clientId = null;
}
@Override
public UIComponent getParent() {
return this.parent;
}
@Override
public void setParent(UIComponent parent) {
this.parent = parent;
}
@Override
public boolean isRendered() {
return true;
}
@Override
public void setRendered(boolean rendered) {
// always rendered
}
@Override
public String getRendererType() {
return ScriptsRenderer.RENDERER_TYPE;
}
@Override
public void setRendererType(String rendererType) {
// do nothing
}
@Override
public boolean getRendersChildren() {
return false;
}
@Override
public List<UIComponent> getChildren() {
return Collections.emptyList();
}
@Override
public int getChildCount() {
return 0;
}
@Override
public UIComponent findComponent(String expr) {
// TODO Auto-generated method stub
return null;
}
@Override
public Map<String, UIComponent> getFacets() {
return Collections.emptyMap();
}
@Override
public UIComponent getFacet(String name) {
return null;
}
@Override
public Iterator<UIComponent> getFacetsAndChildren() {
return ImmutableSet.<UIComponent>of().iterator();
}
@Override
public void broadcast(FacesEvent event) throws AbortProcessingException {
// Do nothing
}
@Override
public void decode(FacesContext context) {
// Do nothing
}
@Override
public void encodeBegin(FacesContext context) throws IOException {
Renderer renderer = getRenderer(context);
if (null != renderer) {
renderer.encodeBegin(context, this);
}
}
@Override
public void encodeChildren(FacesContext context) throws IOException {
Renderer renderer = getRenderer(context);
if (null != renderer) {
renderer.encodeChildren(context, this);
}
}
@Override
public void encodeEnd(FacesContext context) throws IOException {
Renderer renderer = getRenderer(context);
if (null != renderer) {
renderer.encodeEnd(context, this);
}
}
@Override
protected void addFacesListener(FacesListener listener) {
}
@Override
protected FacesListener[] getFacesListeners(Class clazz) {
return new FacesListener[0];
}
@Override
protected void removeFacesListener(FacesListener listener) {
}
@Override
public void queueEvent(FacesEvent event) {
if (null != getParent()) {
getParent().queueEvent(event);
}
}
@Override
public void processRestoreState(FacesContext context, Object state) {
// Do nothing, this component does not have state.
}
@Override
public void processDecodes(FacesContext context) {
// Do nothing
}
@Override
public void processValidators(FacesContext context) {
// Do nothing
}
@Override
public void processUpdates(FacesContext context) {
// Do nothing
}
@Override
public Object processSaveState(FacesContext context) {
// Should never be used
return null;
}
@Override
protected FacesContext getFacesContext() {
return FacesContext.getCurrentInstance();
}
@Override
protected Renderer getRenderer(FacesContext context) {
String rendererType = getRendererType();
Renderer result = null;
if (rendererType != null) {
result = context.getRenderKit().getRenderer(getFamily(), rendererType);
}
return result;
}
final class AttributesMap implements Map<String, Object> {
@Override
public void clear() {
// do nothing
}
@Override
public boolean containsKey(Object key) {
return "target".equals(key) || "id".equals(key) || "clientId".equals(key) || hasAttribute(key);
}
@Override
public boolean containsValue(Object value) {
return false;
}
@Override
public Set<java.util.Map.Entry<String, Object>> entrySet() {
return Collections.emptySet();
}
@Override
public Object get(Object key) {
if ("id".equals(key)) {
return getId();
} else if ("clientId".equals(key)) {
return getClientId();
} else {
return getAttribute(key);
}
}
@Override
public boolean isEmpty() {
return false;
}
@Override
public Set<String> keySet() {
return ImmutableSet.of("target", "id", "clientId");
}
@Override
public Object put(String key, Object value) {
if ("id".equals(key)) {
String id = getId();
setId((String) value);
return id;
} else {
return setAttribute(key, value);
}
}
@Override
public void putAll(Map<? extends String, ? extends Object> m) {
}
@Override
public Object remove(Object key) {
return null;
}
@Override
public int size() {
return 3;
}
@Override
public Collection<Object> values() {
return ImmutableList.<Object>of(getId(), getClientId());
}
}
@Override
public List<SystemEventListener> getListenersForEventClass(Class<? extends SystemEvent> eventClass) {
return Collections.EMPTY_LIST;
}
protected abstract boolean hasAttribute(Object key);
protected abstract Object setAttribute(String key, Object value);
protected abstract Object getAttribute(Object key);
}