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/*
* Copyright (c) 2011-2024 PrimeFaces Extensions
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package org.primefaces.extensions.component.base;
import java.util.Map;
import javax.faces.FacesException;
import javax.faces.application.Application;
import javax.faces.application.FacesMessage;
import javax.faces.component.ContextCallback;
import javax.faces.component.EditableValueHolder;
import javax.faces.component.NamingContainer;
import javax.faces.component.UIComponent;
import javax.faces.component.UIComponentBase;
import javax.faces.component.UINamingContainer;
import javax.faces.component.UIViewRoot;
import javax.faces.component.UniqueIdVendor;
import javax.faces.component.visit.VisitCallback;
import javax.faces.component.visit.VisitContext;
import javax.faces.component.visit.VisitResult;
import javax.faces.context.FacesContext;
import javax.faces.event.FacesEvent;
import javax.faces.event.PhaseId;
import javax.faces.event.PostValidateEvent;
import javax.faces.event.PreValidateEvent;
import javax.faces.render.Renderer;
import org.primefaces.component.api.UITabPanel;
import org.primefaces.extensions.event.EventDataWrapper;
import org.primefaces.extensions.model.common.KeyData;
import org.primefaces.extensions.util.Attrs;
import org.primefaces.extensions.util.SavedEditableValueState;
import org.primefaces.util.ComponentTraversalUtils;
/**
* Abstract base class for all components with dynamic behavior like UIData.
*
* @author Oleg Varaksin / last modified by $Author$
* @version $Revision$
* @since 0.5
*/
public abstract class AbstractDynamicData extends UIComponentBase implements NamingContainer, UniqueIdVendor {
protected KeyData data;
private String clientId = null;
private final StringBuilder idBuilder = new StringBuilder();
private Boolean isNested = null;
/**
* Properties that are tracked by state saving.
*
* @author Oleg Varaksin / last modified by $Author$
* @version $Revision$
*/
@SuppressWarnings("java:S115")
protected enum PropertyKeys {
// @formatter:off
saved,
lastId,
var,
varContainerId,
value;
//@formatter:on
private final String toString;
PropertyKeys() {
toString = null;
}
@Override
public String toString() {
return toString != null ? toString : super.toString();
}
}
public String getVar() {
return (String) getStateHelper().get(PropertyKeys.var);
}
public void setVar(final String var) {
getStateHelper().put(PropertyKeys.var, var);
}
public String getVarContainerId() {
return (String) getStateHelper().get(PropertyKeys.varContainerId);
}
public void setVarContainerId(final String varContainerId) {
getStateHelper().put(PropertyKeys.varContainerId, varContainerId);
}
public Object getValue() {
return getStateHelper().eval(PropertyKeys.value, null);
}
public void setValue(final Object value) {
getStateHelper().put(PropertyKeys.value, value);
}
/**
* Finds instance of {@link org.primefaces.extensions.model.common.KeyData} by corresponding key.
*
* @param key unique key
* @return KeyData found data
*/
protected abstract KeyData findData(String key);
/**
* Processes children components during processDecodes(), processValidators(), processUpdates().
*
* @param context faces context {@link FacesContext}
* @param phaseId current JSF phase id
*/
protected abstract void processChildren(FacesContext context, PhaseId phaseId);
/**
* Visits children components during visitTree().
*
* @param context visit context {@link VisitContext}
* @param callback visit callback {@link VisitCallback}
* @return boolean true - indicates that the children's visit is complete (e.g. all components that need to be visited have been visited), false -
* otherwise.
*/
protected abstract boolean visitChildren(VisitContext context, VisitCallback callback);
/**
* Searches a child component with the given clientId during invokeOnComponent() and invokes the callback on it if found.
*
* @param context faces context {@link FacesContext}
* @param clientId client Id
* @param callback {@link ContextCallback}
* @return boolean true - child component was found, else - otherwise
*/
protected abstract boolean invokeOnChildren(FacesContext context, String clientId, ContextCallback callback);
public void setData(final String key) {
saveDescendantState();
data = findData(key);
exposeVar();
restoreDescendantState();
}
public void setData(final KeyData keyData) {
saveDescendantState();
data = keyData;
exposeVar();
restoreDescendantState();
}
public void resetData() {
saveDescendantState();
data = null;
exposeVar();
}
public KeyData getData() {
return data;
}
@Override
public String getClientId(final FacesContext context) {
if (clientId != null) {
return clientId;
}
String id = getId();
if (id == null) {
final UniqueIdVendor parentUniqueIdVendor = ComponentTraversalUtils.closestUniqueIdVendor(this);
if (parentUniqueIdVendor == null) {
final UIViewRoot viewRoot = context.getViewRoot();
if (viewRoot != null) {
id = viewRoot.createUniqueId(context, null);
}
else {
throw new FacesException("Cannot create clientId for " + this.getClass().getCanonicalName());
}
}
else {
id = parentUniqueIdVendor.createUniqueId(context, null);
}
setId(id);
}
final UIComponent namingContainer = ComponentTraversalUtils.closestNamingContainer(this);
if (namingContainer != null) {
final String containerClientId = namingContainer.getContainerClientId(context);
if (containerClientId != null) {
clientId = idBuilder.append(containerClientId).append(UINamingContainer.getSeparatorChar(context))
.append(id)
.toString();
idBuilder.setLength(0);
}
else {
clientId = id;
}
}
else {
clientId = id;
}
final Renderer renderer = getRenderer(context);
if (renderer != null) {
clientId = renderer.convertClientId(context, clientId);
}
return clientId;
}
@Override
public void setId(final String id) {
super.setId(id);
clientId = null;
}
@Override
public String getContainerClientId(final FacesContext context) {
final String id = this.getClientId(context);
final KeyData keyData = getData();
final String key = keyData != null ? keyData.getKey() : null;
if (key == null) {
return id;
}
else {
final String containerClientId = idBuilder.append(id).append(UINamingContainer.getSeparatorChar(context))
.append(key).toString();
idBuilder.setLength(0);
return containerClientId;
}
}
@Override
public void processDecodes(final FacesContext context) {
if (!isRendered()) {
return;
}
pushComponentToEL(context, this);
preDecode(context);
processFacets(context, PhaseId.APPLY_REQUEST_VALUES, this);
processChildren(context, PhaseId.APPLY_REQUEST_VALUES);
try {
decode(context);
}
catch (final RuntimeException e) {
context.renderResponse();
throw e;
}
finally {
popComponentFromEL(context);
}
}
@Override
public void processValidators(final FacesContext context) {
if (!isRendered()) {
return;
}
pushComponentToEL(context, this);
final Application app = context.getApplication();
app.publishEvent(context, PreValidateEvent.class, this);
processFacets(context, PhaseId.PROCESS_VALIDATIONS, this);
processChildren(context, PhaseId.PROCESS_VALIDATIONS);
app.publishEvent(context, PostValidateEvent.class, this);
popComponentFromEL(context);
}
@Override
public void processUpdates(final FacesContext context) {
if (!isRendered()) {
return;
}
pushComponentToEL(context, this);
processFacets(context, PhaseId.UPDATE_MODEL_VALUES, this);
processChildren(context, PhaseId.UPDATE_MODEL_VALUES);
popComponentFromEL(context);
}
protected void preDecode(final FacesContext context) {
final Map saved = (Map) getStateHelper()
.get(PropertyKeys.saved);
if (null == saved) {
getStateHelper().remove(PropertyKeys.saved);
}
else if (!keepSaved(context)) {
for (final SavedEditableValueState saveState : saved.values()) {
saveState.reset();
}
}
}
private boolean keepSaved(final FacesContext context) {
return contextHasErrorMessages(context) || isNestedWithinIterator();
}
private boolean contextHasErrorMessages(final FacesContext context) {
final FacesMessage.Severity sev = context.getMaximumSeverity();
return sev != null && FacesMessage.SEVERITY_ERROR.compareTo(sev) >= 0;
}
protected Boolean isNestedWithinIterator() {
if (isNested == null) {
UIComponent parent = this;
while (null != (parent = parent.getParent())) {
if (parent instanceof javax.faces.component.UIData ||
parent.getClass().getName().endsWith("UIRepeat") ||
parent instanceof UITabPanel && ((UITabPanel) parent).isRepeating() ||
parent instanceof AbstractDynamicData) {
isNested = Boolean.TRUE;
break;
}
}
if (isNested == null) {
isNested = Boolean.FALSE;
}
}
return isNested;
}
@Override
public void queueEvent(final FacesEvent event) {
super.queueEvent(new EventDataWrapper(this, event, getData()));
}
@Override
public void broadcast(final FacesEvent event) {
if (!(event instanceof EventDataWrapper)) {
super.broadcast(event);
return;
}
final FacesContext context = FacesContext.getCurrentInstance();
final KeyData oldData = getData();
final EventDataWrapper eventDataWrapper = (EventDataWrapper) event;
final FacesEvent originalEvent = eventDataWrapper.getFacesEvent();
final UIComponent originalSource = (UIComponent) originalEvent.getSource();
setData(eventDataWrapper.getData());
UIComponent compositeParent = null;
try {
if (!UIComponent.isCompositeComponent(originalSource)) {
compositeParent = getCompositeComponentParent(originalSource);
}
if (compositeParent != null) {
compositeParent.pushComponentToEL(context, null);
}
originalSource.pushComponentToEL(context, null);
originalSource.broadcast(originalEvent);
}
finally {
originalSource.popComponentFromEL(context);
if (compositeParent != null) {
compositeParent.popComponentFromEL(context);
}
}
setData(oldData);
}
@Override
public boolean visitTree(final VisitContext context, final VisitCallback callback) {
if (!isVisitable(context)) {
return false;
}
final FacesContext fc = context.getFacesContext();
final KeyData oldData = getData();
resetData();
pushComponentToEL(fc, null);
try {
final VisitResult result = context.invokeVisitCallback(this, callback);
if (result == VisitResult.COMPLETE) {
return true;
}
if (result == VisitResult.ACCEPT && !context.getSubtreeIdsToVisit(this).isEmpty()) {
if (getFacetCount() > 0) {
for (final UIComponent facet : getFacets().values()) {
if (facet.visitTree(context, callback)) {
return true;
}
}
}
if (visitChildren(context, callback)) {
return true;
}
}
}
finally {
popComponentFromEL(fc);
setData(oldData);
}
return false;
}
@Override
public boolean invokeOnComponent(final FacesContext context, final String clientId, final ContextCallback callback) {
final KeyData oldData = getData();
resetData();
try {
if (clientId.equals(super.getClientId(context))) {
pushComponentToEL(context, getCompositeComponentParent(this));
callback.invokeContextCallback(context, this);
return true;
}
if (getFacetCount() > 0) {
for (final UIComponent c : getFacets().values()) {
if (clientId.equals(c.getClientId(context))) {
callback.invokeContextCallback(context, c);
return true;
}
}
}
// skip if the component is not a children
if (!clientId.startsWith(this.getClientId(context))) {
return false;
}
return invokeOnChildren(context, clientId, callback);
}
catch (final FacesException fe) {
throw fe;
}
catch (final Exception e) {
throw new FacesException(e);
}
finally {
popComponentFromEL(context);
setData(oldData);
}
}
protected void processFacets(final FacesContext context, final PhaseId phaseId, final UIComponent component) {
resetData();
if (component.getFacetCount() > 0) {
for (final UIComponent facet : component.getFacets().values()) {
if (phaseId == PhaseId.APPLY_REQUEST_VALUES) {
facet.processDecodes(context);
}
else if (phaseId == PhaseId.PROCESS_VALIDATIONS) {
facet.processValidators(context);
}
else if (phaseId == PhaseId.UPDATE_MODEL_VALUES) {
facet.processUpdates(context);
}
else {
throw new IllegalArgumentException();
}
}
}
}
@Override
public String createUniqueId(final FacesContext context, final String seed) {
final Integer i = (Integer) getStateHelper().get(PropertyKeys.lastId);
int lastId = i != null ? i : 0;
getStateHelper().put(PropertyKeys.lastId, ++lastId);
return UIViewRoot.UNIQUE_ID_PREFIX + (seed == null ? lastId : seed);
}
protected void exposeVar() {
final FacesContext fc = FacesContext.getCurrentInstance();
final Map requestMap = fc.getExternalContext().getRequestMap();
final String var = getVar();
if (var != null) {
final KeyData keyData = getData();
if (keyData == null) {
requestMap.remove(var);
}
else {
requestMap.put(var, keyData.getData());
}
}
final String varContainerId = getVarContainerId();
if (varContainerId != null) {
final String containerClientId = getContainerClientId(fc);
if (containerClientId == null) {
requestMap.remove(varContainerId);
}
else {
requestMap.put(varContainerId, containerClientId);
}
}
}
protected void saveDescendantState() {
for (final UIComponent child : getChildren()) {
saveDescendantState(FacesContext.getCurrentInstance(), child);
}
}
protected void saveDescendantState(final FacesContext context, final UIComponent component) {
// force id reset
component.setId(component.getId());
final Map saved = (Map) getStateHelper()
.get(PropertyKeys.saved);
if (component instanceof EditableValueHolder) {
final EditableValueHolder input = (EditableValueHolder) component;
SavedEditableValueState state = null;
final String id = component.getClientId(context);
if (saved == null) {
state = new SavedEditableValueState();
getStateHelper().put(PropertyKeys.saved, id, state);
}
if (state == null) {
state = saved.get(clientId);
if (state == null) {
state = new SavedEditableValueState();
getStateHelper().put(PropertyKeys.saved, id, state);
}
}
state.setValue(input.getLocalValue());
state.setValid(input.isValid());
state.setSubmittedValue(input.getSubmittedValue());
state.setLocalValueSet(input.isLocalValueSet());
state.setLabelValue(((UIComponent) input).getAttributes().get(Attrs.LABEL));
// currently we can't save/restore the disabled: See #571 #644
// we also can't change it easily as the var is not not exposed at this time; it would need some refactoring
/*
* state.setDisabled(((UIComponent) input).getAttributes().get("disabled"));
*/
}
for (final UIComponent child : component.getChildren()) {
saveDescendantState(context, child);
}
if (component.getFacetCount() > 0) {
for (final UIComponent facet : component.getFacets().values()) {
saveDescendantState(context, facet);
}
}
}
protected void restoreDescendantState() {
for (final UIComponent child : getChildren()) {
restoreDescendantState(FacesContext.getCurrentInstance(), child);
}
}
protected void restoreDescendantState(final FacesContext context, final UIComponent component) {
// force id reset
component.setId(component.getId());
final Map saved = (Map) getStateHelper()
.get(PropertyKeys.saved);
if (component instanceof EditableValueHolder) {
final EditableValueHolder input = (EditableValueHolder) component;
final String id = component.getClientId(context);
SavedEditableValueState state = saved.get(id);
if (state == null) {
state = new SavedEditableValueState();
}
input.setValue(state.getValue());
input.setValid(state.isValid());
input.setSubmittedValue(state.getSubmittedValue());
input.setLocalValueSet(state.isLocalValueSet());
if (state.getLabelValue() != null) {
((UIComponent) input).getAttributes().put(Attrs.LABEL, state.getLabelValue());
}
// currently we can't save/restore the disabled: See #571 #644
// we also can't change it easily as the var is not not exposed at this time; it would need some refactoring
/*
* if (state.getDisabled() != null) { ((UIComponent) input).getAttributes().put("disabled", state.getDisabled()); }
*/
}
for (final UIComponent child : component.getChildren()) {
restoreDescendantState(context, child);
}
if (component.getFacetCount() > 0) {
for (final UIComponent facet : component.getFacets().values()) {
restoreDescendantState(context, facet);
}
}
}
@Override
public Object saveState(FacesContext context) {
// reset component for MyFaces view pooling
data = null;
clientId = null;
isNested = null;
return super.saveState(context);
}
}
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