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org.primefaces.component.api.UIData Maven / Gradle / Ivy
/*
* The MIT License
*
* Copyright (c) 2009-2024 PrimeTek Informatics
*
* 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.component.api;
import java.io.IOException;
import java.util.*;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.faces.FacesException;
import javax.faces.application.Application;
import javax.faces.application.FacesMessage;
import javax.faces.application.ProjectStage;
import javax.faces.application.StateManager;
import javax.faces.component.*;
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.PhaseId;
import javax.faces.event.PostValidateEvent;
import javax.faces.event.PreValidateEvent;
import javax.faces.model.DataModel;
import javax.faces.render.Renderer;
import org.primefaces.component.column.Column;
import org.primefaces.component.columngroup.ColumnGroup;
import org.primefaces.component.columns.Columns;
import org.primefaces.model.LazyDataModel;
import org.primefaces.util.ComponentTraversalUtils;
import org.primefaces.util.ComponentUtils;
import org.primefaces.util.ELUtils;
import org.primefaces.util.SharedStringBuilder;
/**
* Enhanced version of the JSF UIData.
* It also contains some methods of the Mojarra impl (e.g. setRowIndexRowStatePreserved), maybe can remove it in the future.
*/
@SuppressWarnings("unchecked")
public class UIData extends javax.faces.component.UIData {
private static final Logger LOGGER = Logger.getLogger(UIData.class.getName());
private static final String SB_ID = UIData.class.getName() + "#id";
private final Map _rowTransientStates = new HashMap<>();
private Map _rowDeltaStates = new HashMap<>();
private Object _initialDescendantFullComponentState;
private String clientId;
private Boolean isNested;
private Object oldVar;
public enum PropertyKeys {
rowIndex,
rowIndexVar,
saved,
lazy,
rowStatePreserved
}
public boolean isLazy() {
return ComponentUtils.eval(getStateHelper(), PropertyKeys.lazy, () -> {
boolean lazy = false;
FacesContext context = getFacesContext();
try {
// if not set by xhtml, we need to check the type of the value binding
Class type = ELUtils.getType(context, getValueExpression("value"), () -> getValue());
if (type == null) {
if (LOGGER.isLoggable(Level.WARNING) && context.isProjectStage(ProjectStage.Development)) {
LOGGER.warning("Unable to automatically determine the `lazy` attribute, fallback to false. "
+ "Either define the `lazy` attribute on the component or make sure the `value` attribute doesn't resolve to `null`. "
+ "clientId: " + this.getClientId());
}
}
else {
lazy = LazyDataModel.class.isAssignableFrom(type);
}
}
catch (Exception e) {
LOGGER.severe("Exception occurred while determining the `lazy` attribute, fallback to false. "
+ "To prevent this error set the `lazy` property directly on the component. "
+ "Error: " + e.getMessage() + ". clientId: " + getClientId());
}
// remember in ViewState, to not do the same check again
setLazy(lazy);
return lazy;
});
}
public void setLazy(boolean lazy) {
getStateHelper().put(PropertyKeys.lazy, lazy);
}
public String getRowIndexVar() {
return (String) getStateHelper().eval(PropertyKeys.rowIndexVar, null);
}
public void setRowIndexVar(String rowIndexVar) {
getStateHelper().put(PropertyKeys.rowIndexVar, rowIndexVar);
}
@Override
public boolean isRowStatePreserved() {
return (Boolean) getStateHelper().eval(PropertyKeys.rowStatePreserved, false);
}
@Override
public void setRowStatePreserved(boolean rowStatePreserved) {
getStateHelper().put(PropertyKeys.rowStatePreserved, rowStatePreserved);
}
@Override
public void processDecodes(FacesContext context) {
if (!isRendered()) {
return;
}
pushComponentToEL(context, this);
preDecode(context);
processPhase(context, PhaseId.APPLY_REQUEST_VALUES);
decode(context);
popComponentFromEL(context);
}
@Override
public void processValidators(FacesContext context) {
if (!isRendered()) {
return;
}
pushComponentToEL(context, this);
Application app = context.getApplication();
app.publishEvent(context, PreValidateEvent.class, this);
preValidate(context);
processPhase(context, PhaseId.PROCESS_VALIDATIONS);
app.publishEvent(context, PostValidateEvent.class, this);
popComponentFromEL(context);
}
@Override
public void processUpdates(FacesContext context) {
if (!isRendered()) {
return;
}
pushComponentToEL(context, this);
preUpdate(context);
processPhase(context, PhaseId.UPDATE_MODEL_VALUES);
popComponentFromEL(context);
}
protected void processPhase(FacesContext context, PhaseId phaseId) {
processFacets(context, phaseId);
if (requiresColumns()) {
processColumnFacets(context, phaseId);
}
if (shouldSkipChildren(context)) {
return;
}
setRowIndex(-1);
processChildren(context, phaseId);
setRowIndex(-1);
}
protected void processFacets(FacesContext context, PhaseId phaseId) {
if (getFacetCount() > 0) {
for (UIComponent facet : getFacets().values()) {
process(context, facet, phaseId);
}
}
}
protected void processColumnFacets(FacesContext context, PhaseId phaseId) {
for (int i = 0; i < getChildCount(); i++) {
UIComponent child = getChildren().get(i);
if (child.isRendered() && (child.getFacetCount() > 0)) {
for (UIComponent facet : child.getFacets().values()) {
process(context, facet, phaseId);
}
}
}
}
protected boolean shouldProcessChild(FacesContext context, int rowIndex, PhaseId phaseId ) {
return true;
}
protected void processChildren(FacesContext context, PhaseId phaseId) {
int first = getFirst();
int rows = getRows();
int last = rows == 0 ? getRowCount() : (first + rows);
List iterableChildren = null;
for (int rowIndex = first; rowIndex < last; rowIndex++) {
setRowIndex(rowIndex);
if (!isRowAvailable()) {
break;
}
if (!shouldProcessChild(context, rowIndex, phaseId)) {
continue;
}
if (iterableChildren == null) {
iterableChildren = getIterableChildren();
}
for (int i = 0; i < iterableChildren.size(); i++) {
UIComponent child = iterableChildren.get(i);
if (child.isRendered()) {
if (child instanceof Column) {
for (UIComponent grandkid : child.getChildren()) {
process(context, grandkid, phaseId);
}
}
else {
process(context, child, phaseId);
}
}
}
}
}
protected void process(FacesContext context, UIComponent component, PhaseId phaseId) {
if (phaseId == PhaseId.APPLY_REQUEST_VALUES) {
component.processDecodes(context);
}
else if (phaseId == PhaseId.PROCESS_VALIDATIONS) {
component.processValidators(context);
}
else if (phaseId == PhaseId.UPDATE_MODEL_VALUES) {
component.processUpdates(context);
}
}
@Override
public String getClientId(FacesContext context) {
if (clientId != null) {
return clientId;
}
String id = getId();
if (id == null) {
UniqueIdVendor parentUniqueIdVendor = ComponentTraversalUtils.closestUniqueIdVendor(this);
if (parentUniqueIdVendor == null) {
UIViewRoot viewRoot = context.getViewRoot();
if (viewRoot != null) {
id = viewRoot.createUniqueId();
}
else {
throw new FacesException("Cannot create clientId for " + getClass().getCanonicalName());
}
}
else {
id = parentUniqueIdVendor.createUniqueId(context, null);
}
setId(id);
}
UIComponent namingContainer = ComponentTraversalUtils.closestNamingContainer(this);
if (namingContainer != null) {
String containerClientId = namingContainer.getContainerClientId(context);
if (containerClientId != null) {
StringBuilder sb = SharedStringBuilder.get(context, SB_ID, containerClientId.length() + 10);
clientId = sb.append(containerClientId).append(UINamingContainer.getSeparatorChar(context)).append(id).toString();
}
else {
clientId = id;
}
}
else {
clientId = id;
}
Renderer renderer = getRenderer(context);
if (renderer != null) {
clientId = renderer.convertClientId(context, clientId);
}
return clientId;
}
@Override
public String getContainerClientId(FacesContext context) {
//clientId is without rowIndex
String componentClientId = getClientId(context);
int rowIndex = getRowIndex();
if (rowIndex == -1) {
return componentClientId;
}
StringBuilder sb = SharedStringBuilder.get(context, SB_ID, componentClientId.length() + 4);
String containerClientId = sb.append(componentClientId).append(UINamingContainer.getSeparatorChar(context)).append(rowIndex).toString();
return containerClientId;
}
@Override
public void setId(String id) {
super.setId(id);
//clear
clientId = null;
}
//Row State preserved implementation is taken from Mojarra
private void setRowIndexRowStatePreserved(int rowIndex) {
if (rowIndex < -1) {
throw new IllegalArgumentException("rowIndex is less than -1");
}
if (getRowIndex() == rowIndex) {
return;
}
FacesContext facesContext = getFacesContext();
if (_initialDescendantFullComponentState != null) {
//Just save the row
Map sm = saveFullDescendantComponentStates(facesContext, null, getChildren().iterator(), false);
if (sm != null && !sm.isEmpty()) {
_rowDeltaStates.put(getContainerClientId(facesContext), sm);
}
if (getRowIndex() != -1) {
_rowTransientStates.put(getContainerClientId(facesContext),
saveTransientDescendantComponentStates(facesContext, null, getChildren().iterator(), false));
}
}
// Update to the new row index
//this.rowIndex = rowIndex;
getStateHelper().put(PropertyKeys.rowIndex, rowIndex);
DataModel localModel = getDataModel();
localModel.setRowIndex(rowIndex);
// if rowIndex is -1, clear the cache
if (rowIndex == -1) {
setDataModel(null);
}
// Clear or expose the current row data as a request scope attribute
String var = getVar();
if (var != null) {
Map requestMap
= getFacesContext().getExternalContext().getRequestMap();
if (rowIndex == -1) {
oldVar = requestMap.remove(var);
}
else if (isRowAvailable()) {
requestMap.put(var, getRowData());
}
else {
requestMap.remove(var);
if (null != oldVar) {
requestMap.put(var, oldVar);
oldVar = null;
}
}
}
if (_initialDescendantFullComponentState != null) {
Object rowState = _rowDeltaStates.get(getContainerClientId(facesContext));
if (rowState == null) {
//Restore as original
restoreFullDescendantComponentStates(facesContext, getChildren().iterator(), _initialDescendantFullComponentState, false);
}
else {
//Restore first original and then delta
restoreFullDescendantComponentDeltaStates(facesContext, getChildren().iterator(), rowState, _initialDescendantFullComponentState, false);
}
if (getRowIndex() == -1) {
restoreTransientDescendantComponentStates(facesContext, getChildren().iterator(), null, false);
}
else {
rowState = _rowTransientStates.get(getContainerClientId(facesContext));
if (rowState == null) {
restoreTransientDescendantComponentStates(facesContext, getChildren().iterator(), null, false);
}
else {
restoreTransientDescendantComponentStates(facesContext, getChildren().iterator(), (Map) rowState, false);
}
}
}
}
private void setRowIndexWithoutRowStatePreserved(int rowIndex) {
saveDescendantState();
setRowModel(rowIndex);
restoreDescendantState();
}
public void setRowModel(int rowIndex) {
//update rowIndex
getStateHelper().put(PropertyKeys.rowIndex, rowIndex);
getDataModel().setRowIndex(rowIndex);
//clear datamodel
if (rowIndex == -1) {
setDataModel(null);
}
//update var
String var = getVar();
if (var != null) {
String rowIndexVar = getRowIndexVar();
Map requestMap = getFacesContext().getExternalContext().getRequestMap();
if (rowIndex == -1) {
oldVar = requestMap.remove(var);
if (rowIndexVar != null) {
requestMap.remove(rowIndexVar);
}
}
else if (isRowAvailable()) {
requestMap.put(var, getRowData());
if (rowIndexVar != null) {
requestMap.put(rowIndexVar, rowIndex);
}
}
else {
requestMap.remove(var);
if (rowIndexVar != null) {
requestMap.put(rowIndexVar, rowIndex);
}
if (oldVar != null) {
requestMap.put(var, oldVar);
oldVar = null;
}
}
}
}
@Override
public int getRowIndex() {
return (Integer) getStateHelper().eval(PropertyKeys.rowIndex, -1);
}
@Override
public void setRowIndex(int rowIndex) {
if (isRowStatePreserved()) {
setRowIndexRowStatePreserved(rowIndex);
}
else {
setRowIndexWithoutRowStatePreserved(rowIndex);
}
}
protected void saveDescendantState() {
FacesContext context = getFacesContext();
if (getChildCount() > 0) {
for (int i = 0; i < getChildCount(); i++) {
UIComponent kid = getChildren().get(i);
saveDescendantState(kid, context);
}
}
if (getFacetCount() > 0) {
for (UIComponent facet : getFacets().values()) {
saveDescendantState(facet, context);
}
}
}
protected void saveDescendantState(UIComponent component, FacesContext context) {
// Save state for this component (if it is a EditableValueHolder)
Map saved = (Map) getStateHelper().get(PropertyKeys.saved);
if (component instanceof EditableValueHolder) {
EditableValueHolder input = (EditableValueHolder) component;
SavedState state = null;
String clientId = component.getClientId(context);
if (saved == null) {
state = new SavedState();
}
if (state == null) {
state = saved.get(clientId);
if (state == null) {
state = new SavedState();
}
}
state.setValue(input.getLocalValue());
state.setValid(input.isValid());
state.setSubmittedValue(input.getSubmittedValue());
state.setLocalValueSet(input.isLocalValueSet());
if (state.hasDeltaState()) {
getStateHelper().put(PropertyKeys.saved, clientId, state);
}
else if (saved != null) {
getStateHelper().remove(PropertyKeys.saved, clientId);
}
}
else if (component instanceof UIForm) {
UIForm form = (UIForm) component;
String clientId = component.getClientId(context);
SavedState state = null;
if (saved == null) {
state = new SavedState();
}
if (state == null) {
state = saved.get(clientId);
if (state == null) {
state = new SavedState();
}
}
state.setSubmitted(form.isSubmitted());
if (state.hasDeltaState()) {
getStateHelper().put(PropertyKeys.saved, clientId, state);
}
else if (saved != null) {
getStateHelper().remove(PropertyKeys.saved, clientId);
}
}
//save state for children
if (component.getChildCount() > 0) {
for (int i = 0; i < component.getChildCount(); i++) {
UIComponent kid = component.getChildren().get(i);
saveDescendantState(kid, context);
}
}
//save state for facets
if (component.getFacetCount() > 0) {
for (UIComponent facet : component.getFacets().values()) {
saveDescendantState(facet, context);
}
}
}
protected void restoreDescendantState() {
FacesContext context = getFacesContext();
if (getChildCount() > 0) {
for (int i = 0; i < getChildCount(); i++) {
UIComponent kid = getChildren().get(i);
restoreDescendantState(kid, context);
}
}
if (getFacetCount() > 0) {
for (UIComponent facet : getFacets().values()) {
restoreDescendantState(facet, context);
}
}
}
protected void restoreDescendantState(UIComponent component, FacesContext context) {
// Reset the client identifier for this component
String id = component.getId();
component.setId(id); // Forces client id to be reset
Map saved = (Map) getStateHelper().get(PropertyKeys.saved);
// Restore state for this component (if it is a EditableValueHolder)
if (component instanceof EditableValueHolder) {
EditableValueHolder input = (EditableValueHolder) component;
String clientId = component.getClientId(context);
SavedState state = saved == null ? null : saved.get(clientId);
if (state == null) {
input.resetValue();
}
else {
input.setValue(state.getValue());
input.setValid(state.isValid());
input.setSubmittedValue(state.getSubmittedValue());
// This *must* be set after the call to setValue(), since
// calling setValue() always resets "localValueSet" to true.
input.setLocalValueSet(state.isLocalValueSet());
}
}
else if (component instanceof UIForm) {
UIForm form = (UIForm) component;
String clientId = component.getClientId(context);
SavedState state = saved == null ? null : saved.get(clientId);
if (state == null) {
// submitted is transient state
form.setSubmitted(false);
}
else {
form.setSubmitted(state.getSubmitted());
}
}
// Restore state for children of this component
if (component.getChildCount() > 0) {
for (UIComponent kid : component.getChildren()) {
restoreDescendantState(kid, context);
}
}
// Restore state for facets of this component
if (component.getFacetCount() > 0) {
for (UIComponent facet : component.getFacets().values()) {
restoreDescendantState(facet, context);
}
}
}
protected boolean shouldSkipChildren(FacesContext context) {
return false;
}
protected boolean shouldVisitChildren(VisitContext context, boolean visitRows) {
if (visitRows) {
setRowIndex(-1);
}
Collection idsToVisit = context.getSubtreeIdsToVisit(this);
return (!idsToVisit.isEmpty());
}
@Override
public boolean invokeOnComponent(FacesContext context, String clientId, ContextCallback callback)
throws FacesException {
// skip if the component is not a children of the UIData
if (!clientId.startsWith(getClientId(context))) {
return false;
}
return super.invokeOnComponent(context, clientId, callback);
}
@Override
public boolean visitTree(VisitContext context, VisitCallback callback) {
if (!isVisitable(context)) {
return false;
}
FacesContext facesContext = context.getFacesContext();
boolean visitRows = !ComponentUtils.isSkipIteration(context, facesContext);
int rowIndex = -1;
if (visitRows) {
rowIndex = getRowIndex();
setRowIndex(-1);
}
pushComponentToEL(facesContext, null);
try {
VisitResult result = context.invokeVisitCallback(this, callback);
if (result == VisitResult.COMPLETE) {
return true;
}
if ((result == VisitResult.ACCEPT) && shouldVisitChildren(context, visitRows)) {
if (visitFacets(context, callback, visitRows)) {
return true;
}
Set rejectedChildren = new HashSet<>();
if (requiresColumns() && visitColumnsAndColumnFacets(context, callback, visitRows, rejectedChildren)) {
return true;
}
if (visitRows(context, callback, visitRows, rejectedChildren)) {
return true;
}
}
}
finally {
popComponentFromEL(facesContext);
if (visitRows) {
setRowIndex(rowIndex);
}
}
return false;
}
protected boolean visitFacets(VisitContext context, VisitCallback callback, boolean visitRows) {
if (visitRows) {
setRowIndex(-1);
}
if (getFacetCount() > 0) {
for (UIComponent facet : getFacets().values()) {
if (facet.visitTree(context, callback)) {
return true;
}
}
}
return false;
}
protected boolean visitColumnsAndColumnFacets(VisitContext context, VisitCallback callback, boolean visitRows, Set rejectedChildren) {
if (visitRows) {
setRowIndex(-1);
}
if (getChildCount() > 0) {
for (int i = 0; i < getChildCount(); i++) {
UIComponent child = getChildren().get(i);
VisitResult result = context.invokeVisitCallback(child, callback); // visit the column directly
if (result == VisitResult.COMPLETE) {
return true;
}
else if (result == VisitResult.REJECT) {
rejectedChildren.add(child);
continue;
}
if (child instanceof UIColumn) {
if (child.getFacetCount() > 0) {
if (child instanceof Columns) {
Columns columns = (Columns) child;
for (int j = 0; j < columns.getRowCount(); j++) {
columns.setRowIndex(j);
boolean value = visitColumnFacets(context, callback, child);
if (value) {
return true;
}
}
columns.setRowIndex(-1);
}
else {
boolean value = visitColumnFacets(context, callback, child);
if (value) {
return true;
}
}
}
}
else if (child instanceof ColumnGroup) {
visitColumnGroup(context, callback, (ColumnGroup) child);
}
}
}
return false;
}
protected boolean visitColumnGroup(VisitContext context, VisitCallback callback, ColumnGroup group) {
if (group.getChildCount() > 0) {
for (int i = 0; i < group.getChildCount(); i++) {
UIComponent row = group.getChildren().get(i);
if (row.getChildCount() > 0) {
for (int j = 0; j < row.getChildCount(); j++) {
UIComponent col = row.getChildren().get(j);
if (col instanceof Column) {
boolean value = visitColumnFacets(context, callback, col);
if (value) {
return true;
}
}
else if (col instanceof Columns) {
if (col.getFacetCount() > 0) {
Columns columns = (Columns) col;
for (int k = 0; k < columns.getRowCount(); k++) {
columns.setRowIndex(k);
boolean value = visitColumnFacets(context, callback, columns);
if (value) {
columns.setRowIndex(-1);
return true;
}
}
columns.setRowIndex(-1);
}
}
}
}
}
}
return false;
}
protected boolean visitColumnFacets(VisitContext context, VisitCallback callback, UIComponent component) {
if (component.getFacetCount() > 0) {
for (UIComponent columnFacet : component.getFacets().values()) {
if (columnFacet.visitTree(context, callback)) {
return true;
}
}
}
return false;
}
protected boolean visitRows(VisitContext context, VisitCallback callback, boolean visitRows, Set rejectedChildren) {
boolean requiresColumns = requiresColumns();
int processed = 0;
int rowIndex = 0;
int rows = 0;
if (visitRows) {
rowIndex = getFirst() - 1;
rows = getRows();
}
while (true) {
if (visitRows) {
if ((rows > 0) && (++processed > rows)) {
break;
}
setRowIndex(++rowIndex);
if (!isRowAvailable()) {
break;
}
}
if (getChildCount() > 0) {
for (int i = 0; i < getChildCount(); i++) {
UIComponent kid = getChildren().get(i);
if (!rejectedChildren.contains(kid)) {
if (requiresColumns) {
if (kid instanceof Columns) {
Columns columns = (Columns) kid;
for (int j = 0; j < columns.getRowCount(); j++) {
columns.setRowIndex(j);
boolean value = visitColumnContent(context, callback, columns);
if (value) {
columns.setRowIndex(-1);
return true;
}
}
columns.setRowIndex(-1);
}
else {
boolean value = visitColumnContent(context, callback, kid);
if (value) {
return true;
}
}
}
else {
if (kid.visitTree(context, callback)) {
return true;
}
}
}
}
}
if (!visitRows) {
break;
}
}
return false;
}
protected boolean visitColumnContent(VisitContext context, VisitCallback callback, UIComponent component) {
if (component.getChildCount() > 0) {
for (int i = 0; i < component.getChildCount(); i++) {
UIComponent grandkid = component.getChildren().get(i);
if (grandkid.visitTree(context, callback)) {
return true;
}
}
}
return false;
}
protected boolean requiresColumns() {
return false;
}
protected List getIterableChildren() {
return getChildren();
}
@Override
public void markInitialState() {
if (isRowStatePreserved()) {
if (getFacesContext().getAttributes().containsKey(StateManager.IS_BUILDING_INITIAL_STATE)) {
_initialDescendantFullComponentState = saveDescendantInitialComponentStates(getFacesContext(), getChildren().iterator(), false);
}
}
super.markInitialState();
}
private void restoreFullDescendantComponentStates(FacesContext facesContext,
Iterator childIterator, Object state,
boolean restoreChildFacets) {
Iterator descendantStateIterator = null;
while (childIterator.hasNext()) {
if (descendantStateIterator == null && state != null) {
descendantStateIterator = ((Collection) state)
.iterator();
}
UIComponent component = childIterator.next();
// reset the client id (see spec 3.1.6)
component.setId(component.getId());
if (!component.isTransient()) {
Object childState = null;
Object descendantState = null;
if (descendantStateIterator != null
&& descendantStateIterator.hasNext()) {
Object[] object = descendantStateIterator.next();
childState = object[0];
descendantState = object[1];
}
component.clearInitialState();
component.restoreState(facesContext, childState);
component.markInitialState();
Iterator childsIterator;
if (restoreChildFacets) {
childsIterator = component.getFacetsAndChildren();
}
else {
childsIterator = component.getChildren().iterator();
}
restoreFullDescendantComponentStates(facesContext, childsIterator,
descendantState, true);
}
}
}
private Collection saveDescendantInitialComponentStates(FacesContext facesContext,
Iterator childIterator, boolean saveChildFacets) {
Collection childStates = null;
while (childIterator.hasNext()) {
if (childStates == null) {
childStates = new ArrayList<>();
}
UIComponent child = childIterator.next();
if (!child.isTransient()) {
// Add an entry to the collection, being an array of two
// elements. The first element is the state of the children
// of this component; the second is the state of the current
// child itself.
Iterator childsIterator;
if (saveChildFacets) {
childsIterator = child.getFacetsAndChildren();
}
else {
childsIterator = child.getChildren().iterator();
}
Object descendantState = saveDescendantInitialComponentStates(
facesContext, childsIterator, true);
Object state = null;
if (child.initialStateMarked()) {
child.clearInitialState();
state = child.saveState(facesContext);
child.markInitialState();
}
else {
state = child.saveState(facesContext);
}
childStates.add(new Object[]{state, descendantState});
}
}
return childStates;
}
private Map saveFullDescendantComponentStates(FacesContext facesContext, Map stateMap,
Iterator childIterator, boolean saveChildFacets) {
while (childIterator.hasNext()) {
UIComponent child = childIterator.next();
if (!child.isTransient()) {
Iterator childsIterator;
if (saveChildFacets) {
childsIterator = child.getFacetsAndChildren();
}
else {
childsIterator = child.getChildren().iterator();
}
stateMap = saveFullDescendantComponentStates(facesContext, stateMap,
childsIterator, true);
Object state = child.saveState(facesContext);
if (state != null) {
if (stateMap == null) {
stateMap = new HashMap<>();
}
stateMap.put(child.getClientId(facesContext), state);
}
}
}
return stateMap;
}
private void restoreFullDescendantComponentDeltaStates(FacesContext facesContext,
Iterator childIterator, Object state, Object initialState,
boolean restoreChildFacets) {
Map descendantStateIterator = null;
Iterator descendantFullStateIterator = null;
while (childIterator.hasNext()) {
if (descendantStateIterator == null && state != null) {
descendantStateIterator = (Map) state;
}
if (descendantFullStateIterator == null && initialState != null) {
descendantFullStateIterator = ((Collection) initialState).iterator();
}
UIComponent component = childIterator.next();
// reset the client id (see spec 3.1.6)
component.setId(component.getId());
if (!component.isTransient()) {
Object childInitialState = null;
Object descendantInitialState = null;
Object childState = null;
if (descendantStateIterator != null
&& descendantStateIterator.containsKey(component.getClientId(facesContext))) {
//Object[] object = (Object[]) descendantStateIterator.get(component.getClientId(facesContext));
//childState = object[0];
childState = descendantStateIterator.get(component.getClientId(facesContext));
}
if (descendantFullStateIterator != null
&& descendantFullStateIterator.hasNext()) {
Object[] object = descendantFullStateIterator.next();
childInitialState = object[0];
descendantInitialState = object[1];
}
component.clearInitialState();
if (childInitialState != null) {
component.restoreState(facesContext, childInitialState);
component.markInitialState();
component.restoreState(facesContext, childState);
}
else {
component.restoreState(facesContext, childState);
component.markInitialState();
}
Iterator childsIterator;
if (restoreChildFacets) {
childsIterator = component.getFacetsAndChildren();
}
else {
childsIterator = component.getChildren().iterator();
}
restoreFullDescendantComponentDeltaStates(facesContext, childsIterator,
state, descendantInitialState, true);
}
}
}
private void restoreTransientDescendantComponentStates(FacesContext facesContext, Iterator childIterator, Map state,
boolean restoreChildFacets) {
while (childIterator.hasNext()) {
UIComponent component = childIterator.next();
// reset the client id (see spec 3.1.6)
component.setId(component.getId());
if (!component.isTransient()) {
component.restoreTransientState(facesContext, (state == null) ? null : state.get(component.getClientId(facesContext)));
Iterator childsIterator;
if (restoreChildFacets) {
childsIterator = component.getFacetsAndChildren();
}
else {
childsIterator = component.getChildren().iterator();
}
restoreTransientDescendantComponentStates(facesContext, childsIterator, state, true);
}
}
}
private Map saveTransientDescendantComponentStates(FacesContext facesContext, Map childStates, Iterator childIterator, boolean saveChildFacets) {
while (childIterator.hasNext()) {
UIComponent child = childIterator.next();
if (!child.isTransient()) {
Iterator childsIterator;
if (saveChildFacets) {
childsIterator = child.getFacetsAndChildren();
}
else {
childsIterator = child.getChildren().iterator();
}
childStates = saveTransientDescendantComponentStates(facesContext, childStates, childsIterator, true);
Object state = child.saveTransientState(facesContext);
if (state != null) {
if (childStates == null) {
childStates = new HashMap<>();
}
childStates.put(child.getClientId(facesContext), state);
}
}
}
return childStates;
}
@Override
public void restoreState(FacesContext context, Object state) {
if (state == null) {
return;
}
Object[] values = (Object[]) state;
super.restoreState(context, values[0]);
Object restoredRowStates = UIComponentBase.restoreAttachedState(context, values[1]);
if (restoredRowStates == null) {
if (!_rowDeltaStates.isEmpty()) {
_rowDeltaStates.clear();
}
}
else {
_rowDeltaStates = (Map) restoredRowStates;
}
}
@Override
public Object saveState(FacesContext context) {
// See MyFaces UIData
ComponentUtils.ViewPoolingResetMode viewPoolingResetMode = ComponentUtils.isViewPooling(context);
if (viewPoolingResetMode == ComponentUtils.ViewPoolingResetMode.SOFT) {
_rowTransientStates.clear();
_initialDescendantFullComponentState = null;
clientId = null;
isNested = null;
oldVar = null;
}
else if (viewPoolingResetMode == ComponentUtils.ViewPoolingResetMode.HARD) {
_rowTransientStates.clear();
_rowDeltaStates.clear();
_initialDescendantFullComponentState = null;
clientId = null;
isNested = null;
oldVar = null;
}
if (initialStateMarked()) {
Object superState = super.saveState(context);
if (superState == null && _rowDeltaStates.isEmpty()) {
return null;
}
else {
Object[] values = null;
Object attachedState = UIComponentBase.saveAttachedState(context, _rowDeltaStates);
if (superState != null || attachedState != null) {
values = new Object[]{superState, attachedState};
}
return values;
}
}
else {
Object[] values = new Object[2];
values[0] = super.saveState(context);
values[1] = UIComponentBase.saveAttachedState(context, _rowDeltaStates);
return values;
}
}
protected boolean isNestedWithinIterator() {
if (isNested == null) {
isNested = ComponentUtils.isNestedWithinIterator(this);
}
return isNested;
}
protected void preDecode(FacesContext context) {
setDataModel(null);
Map saved = (Map) getStateHelper().get(PropertyKeys.saved);
if (null == saved || !keepSaved(context)) {
getStateHelper().remove(PropertyKeys.saved);
}
}
protected void preValidate(FacesContext context) {
if (isNestedWithinIterator()) {
setDataModel(null);
}
}
protected void preUpdate(FacesContext context) {
if (isNestedWithinIterator()) {
setDataModel(null);
}
}
protected void preEncode(FacesContext context) {
setDataModel(null);
if (!keepSaved(context)) {
getStateHelper().remove(PropertyKeys.saved);
}
}
private boolean keepSaved(FacesContext context) {
return (contextHasErrorMessages(context) || isNestedWithinIterator());
}
private boolean contextHasErrorMessages(FacesContext context) {
FacesMessage.Severity sev = context.getMaximumSeverity();
return (sev != null && (FacesMessage.SEVERITY_ERROR.compareTo(sev) >= 0));
}
@Override
public void encodeBegin(FacesContext context) throws IOException {
preEncode(context);
super.encodeBegin(context);
}
}
