/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 javax.faces.component;
import org.apache.myfaces.buildtools.maven2.plugin.builder.annotation.JSFComponent;
import org.apache.myfaces.buildtools.maven2.plugin.builder.annotation.JSFListener;
import org.apache.myfaces.buildtools.maven2.plugin.builder.annotation.JSFProperty;
import org.apache.myfaces.buildtools.maven2.plugin.builder.annotation.JSFWebConfigParam;
import javax.el.ValueExpression;
import javax.faces.FacesException;
import javax.faces.application.FacesMessage;
import javax.faces.application.ProjectStage;
import javax.faces.context.ExternalContext;
import javax.faces.context.FacesContext;
import javax.faces.convert.Converter;
import javax.faces.convert.ConverterException;
import javax.faces.el.EvaluationException;
import javax.faces.el.MethodBinding;
import javax.faces.event.AbortProcessingException;
import javax.faces.event.ExceptionQueuedEvent;
import javax.faces.event.ExceptionQueuedEventContext;
import javax.faces.event.FacesEvent;
import javax.faces.event.PhaseId;
import javax.faces.event.PostValidateEvent;
import javax.faces.event.PreValidateEvent;
import javax.faces.event.ValueChangeEvent;
import javax.faces.event.ValueChangeListener;
import javax.faces.render.Renderer;
import javax.faces.validator.Validator;
import javax.faces.webapp.FacesServlet;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
/**
* UICommand is a base abstraction for components that implement ActionSource.
* <p>
* See the javadoc for this class in the <a href="http://java.sun.com/j2ee/javaserverfaces/1.2/docs/api/index.html">JSF
* Specification</a> for further details.
* <p>
*/
@JSFComponent(defaultRendererType = "javax.faces.Text")
public class UIInput extends UIOutput implements EditableValueHolder
{
public static final String COMPONENT_TYPE = "javax.faces.Input";
public static final String COMPONENT_FAMILY = "javax.faces.Input";
public static final String CONVERSION_MESSAGE_ID = "javax.faces.component.UIInput.CONVERSION";
public static final String REQUIRED_MESSAGE_ID = "javax.faces.component.UIInput.REQUIRED";
public static final String UPDATE_MESSAGE_ID = "javax.faces.component.UIInput.UPDATE";
@JSFWebConfigParam(defaultValue="auto", expectedValues="auto, true, false", since="2.0")
public static final String VALIDATE_EMPTY_FIELDS_PARAM_NAME = "javax.faces.VALIDATE_EMPTY_FIELDS";
/** -=Leonardo Uribe =- According to http://wiki.java.net/bin/view/Projects/Jsf2MR1ChangeLog
* this constant will be made public on 2.1. For now, since this param is handled in
* 2.0, we should do it as well.
**/
@JSFWebConfigParam(defaultValue="false", expectedValues="true, false", since="2.0")
private static final String EMPTY_VALUES_AS_NULL_PARAM_NAME = "javax.faces.INTERPRET_EMPTY_STRING_SUBMITTED_VALUES_AS_NULL";
// our own, cached key
private static final String MYFACES_EMPTY_VALUES_AS_NULL_PARAM_NAME =
"org.apache.myfaces.UIInput.INTERPRET_EMPTY_STRING_SUBMITTED_VALUES_AS_NULL";
/**
* Extended debug info is stored under this key in the request
* map for every UIInput component when in Development mode.
* ATTENTION: this constant is duplicate in org.apache.myfaces.renderkit.ErrorPageWriter
*/
private static final String DEBUG_INFO_KEY = "org.apache.myfaces.debug.DEBUG_INFO";
private static final Validator[] EMPTY_VALIDATOR_ARRAY = new Validator[0];
private _DeltaList<Validator> _validatorList;
/**
* Construct an instance of the UIInput.
*/
public UIInput()
{
setRendererType("javax.faces.Text");
}
@Override
public String getFamily()
{
return COMPONENT_FAMILY;
}
/**
* Store the specified object as the "local value" of this component. The value-binding named "value" (if any) is
* ignored; the object is only stored locally on this component. During the "update model" phase, if there is a
* value-binding named "value" then this local value will be stored via that value-binding and the "local value"
* reset to null.
*/
@Override
public void setValue(Object value)
{
if (getFacesContext().isProjectStage(ProjectStage.Development))
{
// extended debug-info when in Development mode
_createFieldDebugInfo(getFacesContext(), "localValue",
getLocalValue(), value, 1);
}
setLocalValueSet(true);
super.setValue(value);
}
/**
* Return the current value of this component.
* <p>
* If a submitted value has been converted but not yet pushed into the
* model, then return that locally-cached value (see isLocalValueSet).
* <p>
* Otherwise, evaluate an EL expression to fetch a value from the model.
*/
public Object getValue()
{
if (isLocalValueSet()) return super.getLocalValue();
return super.getValue();
}
/**
* Set the "submitted value" of this component from the relevant data in the current servlet request object.
* <p>
* If this component is not rendered, then do nothing; no output would have been sent to the client so no input is
* expected.
* <p>
* Invoke the inherited functionality, which typically invokes the renderer associated with this component to
* extract and set this component's "submitted value".
* <p>
* If this component is marked "immediate", then immediately apply validation to the submitted value found. On
* error, call context method "renderResponse" which will force processing to leap to the "render
* response" phase as soon as the "decode" step has completed for all other components.
*/
@Override
public void processDecodes(FacesContext context)
{
if (context == null)
{
throw new NullPointerException("context");
}
try
{
setCachedFacesContext(context);
if (!isRendered())
{
return;
}
}
finally
{
setCachedFacesContext(null);
}
super.processDecodes(context);
try
{
setCachedFacesContext(context);
if (isImmediate())
{
try
{
pushComponentToEL(context, this);
//Pre validation event dispatch for component
context.getApplication().publishEvent(context, PreValidateEvent.class, getClass(), this);
validate(context);
}
catch (RuntimeException e)
{
context.renderResponse();
throw e;
}
finally
{
context.getApplication().publishEvent(context, PostValidateEvent.class, getClass(), this);
popComponentFromEL(context);
}
if (!isValid())
{
context.renderResponse();
}
}
}
finally
{
setCachedFacesContext(null);
}
}
@Override
public void processValidators(FacesContext context)
{
if (context == null)
{
throw new NullPointerException("context");
}
try
{
setCachedFacesContext(context);
if (!isRendered())
{
return;
}
}
finally
{
setCachedFacesContext(null);
}
super.processValidators(context);
try
{
setCachedFacesContext(context);
if (!isImmediate())
{
try
{
pushComponentToEL(context, this);
//Pre validation event dispatch for component
context.getApplication().publishEvent(context, PreValidateEvent.class, getClass(), this);
validate(context);
}
catch (RuntimeException e)
{
context.renderResponse();
throw e;
}
finally
{
context.getApplication().publishEvent(context, PostValidateEvent.class, getClass(), this);
popComponentFromEL(context);
}
if (!isValid())
{
context.validationFailed();
context.renderResponse();
}
}
}
finally
{
setCachedFacesContext(null);
}
}
@Override
public void processUpdates(FacesContext context)
{
if (context == null)
{
throw new NullPointerException("context");
}
try
{
setCachedFacesContext(context);
if (!isRendered())
{
return;
}
}
finally
{
setCachedFacesContext(null);
}
super.processUpdates(context);
try
{
setCachedFacesContext(context);
try
{
pushComponentToEL(context, this);
updateModel(context);
}
catch (RuntimeException e)
{
context.renderResponse();
throw e;
}
finally
{
popComponentFromEL(context);
}
if (!isValid())
{
context.renderResponse();
}
}
finally
{
setCachedFacesContext(null);
}
}
@Override
public void decode(FacesContext context)
{
// We (re)set to valid, so that component automatically gets (re)validated
setValid(true);
super.decode(context);
}
@Override
public void broadcast(FacesEvent event) throws AbortProcessingException
{
// invoke standard listeners attached to this component first
super.broadcast(event);
// Check if the event is applicable for ValueChangeListener
if (event instanceof ValueChangeEvent)
{
// invoke the single listener defined directly on the component
MethodBinding valueChangeListenerBinding = getValueChangeListener();
if (valueChangeListenerBinding != null)
{
try
{
valueChangeListenerBinding.invoke(getFacesContext(), new Object[] { event });
}
catch (EvaluationException e)
{
Throwable cause = e.getCause();
if (cause != null && cause instanceof AbortProcessingException)
{
throw (AbortProcessingException) cause;
}
else
{
throw e;
}
}
}
}
}
public void updateModel(FacesContext context)
{
if (!isValid())
{
return;
}
if (!isLocalValueSet())
{
return;
}
ValueExpression expression = getValueExpression("value");
if (expression == null)
{
return;
}
try
{
expression.setValue(context.getELContext(), getLocalValue());
setValue(null);
setLocalValueSet(false);
}
catch (Exception e)
{
// Enqueue an error message
context.getExternalContext().log(e.getMessage(), e);
// Create a FacesMessage with the id UPDATE_MESSAGE_ID
FacesMessage facesMessage = _MessageUtils.getMessage(context,
context.getViewRoot().getLocale(), FacesMessage.SEVERITY_ERROR, UPDATE_MESSAGE_ID,
new Object[] { _MessageUtils.getLabel(context, this) });
// create an UpdateModelException and enqueue it since
// we are not allowed to throw it directly here
// spec javadoc: The exception must not be re-thrown. This enables tree traversal to
// continue for this lifecycle phase, as in all the other lifecycle phases.
UpdateModelException updateModelException = new UpdateModelException(facesMessage, e);
ExceptionQueuedEventContext exceptionQueuedContext
= new ExceptionQueuedEventContext (context, updateModelException, this, PhaseId.UPDATE_MODEL_VALUES);
// spec javadoc says we should call context.getExceptionHandler().processEvent(exceptionQueuedContext),
// which is not just syntactically wrong, but also stupid!!
context.getApplication().publishEvent(context, ExceptionQueuedEvent.class, exceptionQueuedContext);
// Set the valid property of this UIInput to false
setValid(false);
}
}
protected void validateValue(FacesContext context, Object convertedValue)
{
if (!isValid())
return;
// If our value is empty, check the required property
boolean isEmpty = isEmpty(convertedValue);
if (isRequired() && isEmpty)
{
if (getRequiredMessage() != null)
{
String requiredMessage = getRequiredMessage();
context.addMessage(this.getClientId(context), new FacesMessage(FacesMessage.SEVERITY_ERROR,
requiredMessage, requiredMessage));
}
else
{
_MessageUtils.addErrorMessage(context, this, REQUIRED_MESSAGE_ID,
new Object[] { _MessageUtils.getLabel(context, this) });
}
setValid(false);
return;
}
if (!isEmpty || shouldValidateEmptyFields(context))
{
_ComponentUtils.callValidators(context, this, convertedValue);
}
}
/**
* Checks if the <code>validate()</code> should interpret an empty
* submitted value should be handle as <code>NULL</code>
*
* @return a (cached) boolean to identify the interpretation as null
*/
private boolean shouldInterpretEmptyStringSubmittedValuesAsNull(FacesContext context)
{
ExternalContext ec = context.getExternalContext();
Boolean interpretEmptyStringAsNull = (Boolean)ec.getApplicationMap().get(MYFACES_EMPTY_VALUES_AS_NULL_PARAM_NAME);
// not yet cached...
if (interpretEmptyStringAsNull == null)
{
// parses the web.xml to get the "javax.faces.INTERPRET_EMPTY_STRING_SUBMITTED_VALUES_AS_NULL" value
String param = ec.getInitParameter(EMPTY_VALUES_AS_NULL_PARAM_NAME);
// evaluate the param
interpretEmptyStringAsNull = "true".equalsIgnoreCase(param);
// cache the parsed value
ec.getApplicationMap().put(MYFACES_EMPTY_VALUES_AS_NULL_PARAM_NAME, interpretEmptyStringAsNull);
}
return interpretEmptyStringAsNull;
}
/**
* <p>Return <code>true</code> if the value is an empty <code>String</code>.</p>
*/
private boolean isEmptyString(Object value)
{
return ((value instanceof String) && (((String) value).length() == 0));
}
private boolean shouldValidateEmptyFields(FacesContext context)
{
ExternalContext extCtx = context.getExternalContext();
String validateEmptyFields = (String) extCtx.getInitParameter(VALIDATE_EMPTY_FIELDS_PARAM_NAME);
if (validateEmptyFields == null)
{
validateEmptyFields = (String) extCtx.getApplicationMap().get(VALIDATE_EMPTY_FIELDS_PARAM_NAME);
}
// null means the same as auto.
if (validateEmptyFields == null)
{
validateEmptyFields = "auto";
}
else
{
// The environment variables are case insensitive.
validateEmptyFields = validateEmptyFields.toLowerCase();
}
if (validateEmptyFields.equals("auto") && _ExternalSpecifications.isBeanValidationAvailable())
{
return true;
}
else if (validateEmptyFields.equals("true"))
{
return true;
}
return false;
}
/**
* Determine whether the new value is valid, and queue a ValueChangeEvent if necessary.
* <p>
* The "submitted value" is converted to the necessary type; conversion failure is reported as an error and
* validation processing terminates for this component. See documentation for method getConvertedValue for details
* on the conversion process.
* <p>
* Any validators attached to this component are then run, passing the converted value.
* <p>
* The old value of this component is then fetched (possibly involving the evaluation of a value-binding expression,
* ie invoking a method on a user object). The old value is compared to the new validated value, and if they are
* different then a ValueChangeEvent is queued for later processing.
* <p>
* On successful completion of this method:
* <ul>
* <li>isValid() is true
* <li>isLocalValueSet() is true
* <li>submittedValue is reset to null
* <li>a ValueChangeEvent is queued if the new value != old value
* </ul>
*/
public void validate(FacesContext context)
{
if (context == null)
throw new NullPointerException("context");
try
{
Object submittedValue = getSubmittedValue();
if (submittedValue == null)
{
return;
}
// Begin new JSF 2.0 requirement (INTERPRET_EMPTY_STRING_SUBMITTED_VALUES_AS_NULL)
if (shouldInterpretEmptyStringSubmittedValuesAsNull(context) && isEmptyString(submittedValue))
{
// -= matzew = setSubmittedValue(null) is wrong, see:
// https://javaserverfaces-spec-public.dev.java.net/issues/show_bug.cgi?id=671
setSubmittedValue(null);
submittedValue = null;
}
// End new JSF 2.0 requirement (INTERPRET_EMPTY_STRING_SUBMITTED_VALUES_AS_NULL)
Object convertedValue;
try
{
convertedValue = getConvertedValue(context, submittedValue);
}
catch (ConverterException e)
{
String converterMessage = getConverterMessage();
if (converterMessage != null)
{
context.addMessage(getClientId(context), new FacesMessage(FacesMessage.SEVERITY_ERROR,
converterMessage, converterMessage));
}
else
{
FacesMessage facesMessage = e.getFacesMessage();
if (facesMessage != null)
{
context.addMessage(getClientId(context), facesMessage);
}
else
{
_MessageUtils.addErrorMessage(context, this, CONVERSION_MESSAGE_ID,
new Object[] { _MessageUtils.getLabel(context, this) });
}
}
setValid(false);
return;
}
validateValue(context, convertedValue);
if (!isValid())
return;
Object previousValue = getValue();
setValue(convertedValue);
setSubmittedValue(null);
if (compareValues(previousValue, convertedValue))
{
queueEvent(new ValueChangeEvent(this, previousValue, convertedValue));
}
}
catch (Exception ex)
{
throw new FacesException("Exception while validating component with path : "
+ _ComponentUtils.getPathToComponent(this), ex);
}
}
/**
* Convert the provided object to the desired value.
* <p>
* If there is a renderer for this component, then call the renderer's getConvertedValue method. While this can of
* course be implemented in any way the renderer desires, it typically performs exactly the same processing that
* this method would have done anyway (ie that described below for the no-renderer case).
* <p>
* Otherwise:
* <ul>
* <li>If the submittedValue is not a String then just return the submittedValue unconverted.
* <li>If there is no "value" value-binding then just return the submittedValue unconverted.
* <li>Use introspection to determine the type of the target property specified by the value-binding, and then use
* Application.createConverter to find a converter that can map from String to the required type. Apply the
* converter to the submittedValue and return the result.
* </ul>
*/
protected Object getConvertedValue(FacesContext context, Object submittedValue) throws ConverterException
{
Renderer renderer = getRenderer(context);
if (renderer != null)
{
return renderer.getConvertedValue(context, this, submittedValue);
}
else if (submittedValue instanceof String)
{
Converter converter = _SharedRendererUtils.findUIOutputConverter(context, this);
if (converter != null)
{
return converter.getAsObject(context, this, (String) submittedValue);
}
}
return submittedValue;
}
protected boolean compareValues(Object previous, Object value)
{
return previous == null ? (value != null) : (!previous.equals(value));
}
/**
* @since 1.2
*/
public void resetValue()
{
setSubmittedValue(null);
setValue(null);
setLocalValueSet(false);
setValid(true);
}
/**
* A boolean value that identifies the phase during which action events should fire.
* <p>
* During normal event processing, action methods and action listener methods are fired during the
* "invoke application" phase of request processing. If this attribute is set to "true", these methods are fired
* instead at the end of the "apply request values" phase.
* </p>
*/
@JSFProperty
public boolean isImmediate()
{
return (Boolean) getStateHelper().eval(PropertyKeys.immediate, Boolean.FALSE);
}
public void setImmediate(boolean immediate)
{
getStateHelper().put(PropertyKeys.immediate, immediate );
}
/**
* A boolean value that indicates whether an input value is required.
* <p>
* If this value is true and no input value is provided by a postback operation, then the "requiredMessage" text is
* registered as a FacesMessage for the request, and validation fails.
* </p>
* <p>
* Default value: false.
* </p>
*/
@JSFProperty(defaultValue = "false")
public boolean isRequired()
{
return (Boolean) getStateHelper().eval(PropertyKeys.required, Boolean.FALSE);
}
public void setRequired(boolean required)
{
getStateHelper().put(PropertyKeys.required, required );
}
/**
* Text to be displayed to the user as an error message when conversion of a submitted value to the target type
* fails.
* <p>
* </p>
*/
@JSFProperty
public String getConverterMessage()
{
return (String) getStateHelper().eval(PropertyKeys.converterMessage);
}
public void setConverterMessage(String converterMessage)
{
getStateHelper().put(PropertyKeys.converterMessage, converterMessage );
}
/**
* Text to be displayed to the user as an error message when this component is marked as "required" but no input
* data is present during a postback (ie the user left the required field blank).
*/
@JSFProperty
public String getRequiredMessage()
{
return (String) getStateHelper().eval(PropertyKeys.requiredMessage);
}
public void setRequiredMessage(String requiredMessage)
{
getStateHelper().put(PropertyKeys.requiredMessage, requiredMessage );
}
/**
* A method-binding EL expression which is invoked during the validation phase for this component.
* <p>
* The invoked method is expected to check the submitted value for this component, and if not acceptable then report
* a validation error for the component.
* </p>
* <p>
* The method is expected to have the prototype
* </p>
* <code>public void aMethod(FacesContext, UIComponent,Object)</code>
*
* @deprecated
*/
@SuppressWarnings("dep-ann")
@JSFProperty(stateHolder=true, returnSignature = "void", methodSignature = "javax.faces.context.FacesContext,javax.faces.component.UIComponent,java.lang.Object")
public MethodBinding getValidator()
{
return (MethodBinding) getStateHelper().eval(PropertyKeys.validator);
}
/** See getValidator.
*
* @deprecated
*/
public void setValidator(MethodBinding validator)
{
getStateHelper().put(PropertyKeys.validator, validator);
}
/** See getValidator. */
public void addValidator(Validator validator)
{
if (validator == null)
{
throw new NullPointerException("validator");
}
if (_validatorList == null)
{
_validatorList = new _DeltaList<Validator>(new ArrayList<Validator>());
}
_validatorList.add(validator);
// The argument validator must be inspected for the presence of the ResourceDependency annotation.
//_handleAnnotations(FacesContext.getCurrentInstance(), validator);
}
/** See getValidator. */
public void removeValidator(Validator validator)
{
if (validator == null || _validatorList == null)
return;
_validatorList.remove(validator);
}
/** See getValidator. */
public Validator[] getValidators()
{
return _validatorList == null ? EMPTY_VALIDATOR_ARRAY
: _validatorList.toArray(new Validator[_validatorList.size()]);
}
/**
* Text which will be shown if validation fails.
*/
@JSFProperty
public String getValidatorMessage()
{
return (String) getStateHelper().eval(PropertyKeys.validatorMessage);
}
public void setValidatorMessage(String validatorMessage)
{
getStateHelper().put(PropertyKeys.validatorMessage, validatorMessage );
}
/**
* A method which is invoked during postback processing for the current view if the submitted value for this
* component is not equal to the value which the "value" expression for this component returns.
* <p>
* The phase in which this method is invoked can be controlled via the immediate attribute.
* </p>
*
* @deprecated
*/
@JSFProperty(stateHolder=true, returnSignature = "void", methodSignature = "javax.faces.event.ValueChangeEvent", clientEvent="valueChange")
public MethodBinding getValueChangeListener()
{
return (MethodBinding) getStateHelper().eval(PropertyKeys.valueChangeListener);
}
/**
* See getValueChangeListener.
*
* @deprecated
*/
public void setValueChangeListener(MethodBinding valueChangeListener)
{
getStateHelper().put(PropertyKeys.valueChangeListener, valueChangeListener);
}
/**
* Specifies whether the component's value is currently valid, ie whether the validators attached to this component
* have allowed it.
*/
@JSFProperty(defaultValue = "true", tagExcluded = true)
public boolean isValid()
{
Object value = getStateHelper().get(PropertyKeys.valid);
if (value != null)
{
return (Boolean) value;
}
return true;
}
public void setValid(boolean valid)
{
// default value for valid is true, so if the intention is to save the default
// value when nothing else was set before, don't do it. This is done in order to
// reduce the size of the saved state of the state helper. Default values won't be
// included in the saved state.
if (getStateHelper().get(PropertyKeys.valid) != null || !valid)
{
getStateHelper().put(PropertyKeys.valid, valid );
}
}
/**
* Specifies whether a local value is currently set.
* <p>
* If false, values are being retrieved from any attached ValueBinding.
*/
@JSFProperty(defaultValue = "false", tagExcluded = true)
public boolean isLocalValueSet()
{
Object value = getStateHelper().get(PropertyKeys.localValueSet);
if (value != null)
{
return (Boolean) value;
}
return false;
}
public void setLocalValueSet(boolean localValueSet)
{
// default value for localValueSet is false, so if the intention is to save the default
// value when nothing else was set before, don't do it. This is done in order to
// reduce the size of the saved state of the state helper. Default values won't be
// included in the saved state.
if (getStateHelper().get(PropertyKeys.localValueSet) != null || localValueSet)
{
getStateHelper().put(PropertyKeys.localValueSet, localValueSet );
}
}
/**
* Gets the current submitted value. This value, if non-null, is set by the Renderer to store a possibly invalid
* value for later conversion or redisplay, and has not yet been converted into the proper type for this component
* instance. This method should only be used by the decode() and validate() method of this component, or its
* corresponding Renderer; however, user code may manually set it to null to erase any submitted value.
*/
@JSFProperty(tagExcluded = true)
public Object getSubmittedValue()
{
return getStateHelper().get(PropertyKeys.submittedValue);
}
public void setSubmittedValue(Object submittedValue)
{
if (getFacesContext().isProjectStage(ProjectStage.Development))
{
// extended debug-info when in Development mode
_createFieldDebugInfo(getFacesContext(), "submittedValue",
getSubmittedValue(), submittedValue, 1);
}
getStateHelper().put(PropertyKeys.submittedValue, submittedValue );
}
public void addValueChangeListener(ValueChangeListener listener)
{
addFacesListener(listener);
}
public void removeValueChangeListener(ValueChangeListener listener)
{
removeFacesListener(listener);
}
/**
* The valueChange event is delivered when the value attribute
* is changed.
*/
@JSFListener(event="javax.faces.event.ValueChangeEvent")
public ValueChangeListener[] getValueChangeListeners()
{
return (ValueChangeListener[]) getFacesListeners(ValueChangeListener.class);
}
enum PropertyKeys
{
immediate
, required
, converterMessage
, requiredMessage
, validator
, validatorListSet
, validatorMessage
, valueChangeListener
, valid
, localValueSet
, submittedValue
}
public void markInitialState()
{
super.markInitialState();
if (_validatorList != null)
{
_validatorList.markInitialState();
}
}
public void clearInitialState()
{
if (initialStateMarked())
{
super.clearInitialState();
if (_validatorList != null)
{
_validatorList.clearInitialState();
}
}
}
@Override
public Object saveState(FacesContext facesContext)
{
if (initialStateMarked())
{
Object parentSaved = super.saveState(facesContext);
Object validatorListSaved = saveValidatorList(facesContext);
if (parentSaved == null && validatorListSaved == null)
{
//No values
return null;
}
Object[] values = new Object[2];
values[0] = parentSaved;
values[1] = validatorListSaved;
return values;
}
else
{
Object[] values = new Object[2];
values[0] = super.saveState(facesContext);
values[1] = saveValidatorList(facesContext);
return values;
}
}
@SuppressWarnings("unchecked")
@Override
public void restoreState(FacesContext facesContext, Object state)
{
if (state == null)
{
return;
}
Object[] values = (Object[])state;
super.restoreState(facesContext,values[0]);
if (values[1] instanceof _AttachedDeltaWrapper)
{
//Delta
if (_validatorList != null)
{
((StateHolder)_validatorList).restoreState(facesContext,
((_AttachedDeltaWrapper) values[1]).getWrappedStateObject());
}
}
else if (values[1] != null || !initialStateMarked())
{
//Full
_validatorList = (_DeltaList<Validator>)
restoreAttachedState(facesContext,values[1]);
}
}
private Object saveValidatorList(FacesContext facesContext)
{
PartialStateHolder holder = (PartialStateHolder) _validatorList;
if (initialStateMarked() && _validatorList != null && holder.initialStateMarked())
{
Object attachedState = holder.saveState(facesContext);
if (attachedState != null)
{
return new _AttachedDeltaWrapper(_validatorList.getClass(),
attachedState);
}
//_validatorList instances once is created never changes, we can return null
return null;
}
else
{
return saveAttachedState(facesContext,_validatorList);
}
}
/**
* Returns the debug-info Map for this component.
* @return
*/
@SuppressWarnings("unchecked")
private Map<String, List<Object[]>> _getDebugInfoMap()
{
final Map<String, Object> requestMap = getFacesContext()
.getExternalContext().getRequestMap();
Map<String, List<Object[]>> debugInfo = (Map<String, List<Object[]>>)
requestMap.get(DEBUG_INFO_KEY + getClientId());
if (debugInfo == null)
{
// no debug info available yet, create one and put it on the attributes map
debugInfo = new HashMap<String, List<Object[]>>();
requestMap.put(DEBUG_INFO_KEY + getClientId(), debugInfo);
}
return debugInfo;
}
/**
* Returns the field's debug-infos from the component's debug-info Map.
* @param field
* @return
*/
private List<Object[]> _getFieldDebugInfos(final String field)
{
Map<String, List<Object[]>> debugInfo = _getDebugInfoMap();
List<Object[]> fieldDebugInfo = debugInfo.get(field);
if (fieldDebugInfo == null)
{
// no field debug-infos yet, create them and store it in the Map
fieldDebugInfo = new ArrayList<Object[]>();
debugInfo.put(field, fieldDebugInfo);
}
return fieldDebugInfo;
}
/**
* Creates the field debug-info for the given field, which changed
* from oldValue to newValue.
*
* @param facesContext
* @param field
* @param oldValue
* @param newValue
* @param skipStackTaceElements How many StackTraceElements should be skipped
* when the calling function will be determined.
*/
private void _createFieldDebugInfo(FacesContext facesContext,
final String field, Object oldValue,
Object newValue, final int skipStackTaceElements)
{
if (oldValue == null && newValue == null)
{
// both values are null, not interesting and can
// happen a lot in UIData with saving and restoring state
return;
}
// convert Array values into a more readable format
if (oldValue != null && oldValue.getClass().isArray())
{
oldValue = Arrays.deepToString((Object[]) oldValue);
}
if (newValue != null && newValue.getClass().isArray())
{
newValue = Arrays.deepToString((Object[]) newValue);
}
// use Throwable to get the current call stack
Throwable throwableHelper = new Throwable();
StackTraceElement[] stackTraceElements = throwableHelper.getStackTrace();
List<StackTraceElement> debugStackTraceElements = new LinkedList<StackTraceElement>();
// + 1 because this method should also be skipped
for (int i = skipStackTaceElements + 1; i < stackTraceElements.length; i++)
{
debugStackTraceElements.add(stackTraceElements[i]);
if (FacesServlet.class.getCanonicalName()
.equals(stackTraceElements[i].getClassName()))
{
// stop after the FacesServlet
break;
}
}
// create the debug-info array
// structure:
// - 0: phase
// - 1: old value
// - 2: new value
// - 3: StackTraceElement List
// NOTE that we cannot create a class here to encapsulate this data,
// because this is not on the spec and the class would not be available in impl.
Object[] debugInfo = new Object[4];
debugInfo[0] = facesContext.getCurrentPhaseId();
debugInfo[1] = oldValue;
debugInfo[2] = newValue;
debugInfo[3] = debugStackTraceElements;
// add the debug info
_getFieldDebugInfos(field).add(debugInfo);
}
/**
* Check if a value is empty or not. Since we don't know the class of
* value we have to check and deal with it properly.
*
* @since 2.0
* @param value
* @return
*/
public static boolean isEmpty(Object value)
{
if (value == null)
{
return true;
}
else if (value instanceof String)
{
if ( ((String)value).trim().length() <= 0 )
{
return true;
}
}
else if (value instanceof Collection)
{
if ( ((Collection)value).isEmpty())
{
return true;
}
}
else if (value.getClass().isArray())
{
if (java.lang.reflect.Array.getLength(value) <= 0)
{
return true;
}
}
else if (value instanceof Map)
{
if ( ((Map)value).isEmpty())
{
return true;
}
}
return false;
}
}