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// or you will lose your changes.
/*
* 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 java.util.ArrayList;
import java.util.List;
import javax.el.ValueExpression;
import javax.faces.FacesException;
import javax.faces.application.FacesMessage;
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.FacesEvent;
import javax.faces.event.ValueChangeEvent;
import javax.faces.event.ValueChangeListener;
import javax.faces.render.Renderer;
import javax.faces.validator.Validator;
/**
*
* <h4>Events:</h4>
* <table border="1" width="100%" cellpadding="3" summary="">
* <tr bgcolor="#CCCCFF" class="TableHeadingColor">
* <th align="left">Type</th>
* <th align="left">Phases</th>
* <th align="left">Description</th>
* </tr>
* <tr class="TableRowColor">
* <td valign="top"><code>javax.faces.event.ValueChangeEvent</code></td>
* <td valign="top" nowrap></td>
* <td valign="top">The valueChange event is delivered when the value
attribute is changed.</td>
* </tr>
* </table>
*/
public class UIInput extends UIOutput
implements EditableValueHolder
{
static public final String COMPONENT_FAMILY =
"javax.faces.Input";
static public final String COMPONENT_TYPE =
"javax.faces.Input";
/**
* Construct an instance of the UIInput.
*/
public UIInput()
{
setRendererType("javax.faces.Text");
}
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";
private static final String ERROR_HANDLING_EXCEPTION_LIST = "org.apache.myfaces.errorHandling.exceptionList";
/**
* 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.
*/
public void setValue(Object value)
{
setLocalValueSet(true);
super.setValue(value);
}
/**
* Set the "submitted value" of this component from the relevant data
* in the current servet 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.
*/
public void processDecodes(FacesContext context)
{
if (context == null) throw new NullPointerException("context");
if (!isRendered()) return;
super.processDecodes(context);
if (isImmediate())
{
try
{
validate(context);
}
catch (RuntimeException e)
{
context.renderResponse();
throw e;
}
if (!isValid())
{
context.renderResponse();
}
}
}
public void processValidators(FacesContext context)
{
if (context == null) throw new NullPointerException("context");
if (!isRendered()) return;
super.processValidators(context);
if (!isImmediate())
{
try
{
validate(context);
}
catch (RuntimeException e)
{
context.renderResponse();
throw e;
}
if (!isValid())
{
context.renderResponse();
}
}
}
public void processUpdates(FacesContext context)
{
if (context == null) throw new NullPointerException("context");
if (!isRendered()) return;
super.processUpdates(context);
try
{
updateModel(context);
}
catch (RuntimeException e)
{
context.renderResponse();
throw e;
}
if (!isValid())
{
context.renderResponse();
}
}
public void decode(FacesContext context)
{
//We (re)set to valid, so that component automatically gets (re)validated
setValid(true);
super.decode(context);
}
public void broadcast(FacesEvent event)
throws AbortProcessingException
{
if (!(event instanceof ValueChangeEvent))
{
throw new IllegalArgumentException("FacesEvent of class " + event.getClass().getName() + " not supported by UIInput");
}
// invoke standard listeners attached to this component first
super.broadcast(event);
// 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)
{
context.getExternalContext().log(e.getMessage(), e);
_MessageUtils.addErrorMessage(context, this, UPDATE_MESSAGE_ID, new Object[]{_MessageUtils.getLabel(context,this)});
setValid(false);
/* we are not allowed to throw exceptions here - we still need the full stack-trace later on
* to process it later in our error-handler
*/
queueExceptionInRequest(context, expression, e);
}
}
/**
* For development and production, we want to offer a single point
* to which error-handlers can attach. So we queue up all ocurring
* exceptions and later pass them to the configured error-handler.
*
* @param context
* @param expression
* @param e
*/
private void queueExceptionInRequest(FacesContext context, ValueExpression expression, Exception e) {
List li = (List) context.getExternalContext().getRequestMap().get(ERROR_HANDLING_EXCEPTION_LIST);
if(null==li) {
li = new ArrayList();
context.getExternalContext().getRequestMap().put(ERROR_HANDLING_EXCEPTION_LIST, li);
li.add(new FacesException("Exception while setting value for expression : "+
expression.getExpressionString()+" of component with path : "
+ _ComponentUtils.getPathToComponent(this),e));
}
}
protected void validateValue(FacesContext context,Object convertedValue)
{
boolean empty = convertedValue == null ||
(convertedValue instanceof String
&& ((String)convertedValue).length() == 0);
if (isRequired() && empty)
{
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 (!empty)
{
_ComponentUtils.callValidators(context, this, convertedValue);
}
}
/**
* 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;
Object convertedValue = getConvertedValue(context, submittedValue);
if (!isValid()) 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)
{
try
{
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);
}
}
}
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 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);
}
// Property: immediate
private boolean _immediate;
private boolean _immediateSet;
/**
* Gets A boolean value that identifies the phase during which action events
* should fire. 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.
*
* @return the new immediate value
*/
public boolean isImmediate()
{
if (_immediateSet)
{
return _immediate;
}
ValueExpression expression = getValueExpression("immediate");
if (expression != null)
{
return (Boolean)expression.getValue(getFacesContext().getELContext());
}
return false;
}
/**
* Sets A boolean value that identifies the phase during which action events
* should fire. 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.
*
* @param immediate the new immediate value
*/
public void setImmediate(boolean immediate)
{
this._immediate = immediate;
this._immediateSet = true;
}
// Property: required
private boolean _required;
private boolean _requiredSet;
/**
* Gets A boolean value that indicates whether a value is required. Default value: false.
*
* @return the new required value
*/
public boolean isRequired()
{
if (_requiredSet)
{
return _required;
}
ValueExpression expression = getValueExpression("required");
if (expression != null)
{
return (Boolean)expression.getValue(getFacesContext().getELContext());
}
return false;
}
/**
* Sets A boolean value that indicates whether a value is required. Default value: false.
*
* @param required the new required value
*/
public void setRequired(boolean required)
{
this._required = required;
this._requiredSet = true;
}
// Property: converterMessage
private String _converterMessage;
/**
* Gets Text of the converter message.
*
* @return the new converterMessage value
*/
public String getConverterMessage()
{
if (_converterMessage != null)
{
return _converterMessage;
}
ValueExpression expression = getValueExpression("converterMessage");
if (expression != null)
{
return (String)expression.getValue(getFacesContext().getELContext());
}
return null;
}
/**
* Sets Text of the converter message.
*
* @param converterMessage the new converterMessage value
*/
public void setConverterMessage(String converterMessage)
{
this._converterMessage = converterMessage;
}
// Property: requiredMessage
private String _requiredMessage;
/**
* Gets Text which will be shown if a required value is not submitted.
*
* @return the new requiredMessage value
*/
public String getRequiredMessage()
{
if (_requiredMessage != null)
{
return _requiredMessage;
}
ValueExpression expression = getValueExpression("requiredMessage");
if (expression != null)
{
return (String)expression.getValue(getFacesContext().getELContext());
}
return null;
}
/**
* Sets Text which will be shown if a required value is not submitted.
*
* @param requiredMessage the new requiredMessage value
*/
public void setRequiredMessage(String requiredMessage)
{
this._requiredMessage = requiredMessage;
}
// Property: validator
private MethodBinding _validator;
/**
* Gets A method which is invoked during the validation phase for this component. It is
* expected to check the submitted value for this component, and if not acceptable
* then report a validation error for the component.
*
* @return the new validator value
* @deprecated
*/
public MethodBinding getValidator()
{
if (_validator != null)
{
return _validator;
}
ValueExpression expression = getValueExpression("validator");
if (expression != null)
{
return (MethodBinding)expression.getValue(getFacesContext().getELContext());
}
return null;
}
/**
* Sets A method which is invoked during the validation phase for this component. It is
* expected to check the submitted value for this component, and if not acceptable
* then report a validation error for the component.
*
* @param validator the new validator value
* @deprecated
*/
public void setValidator(MethodBinding validator)
{
this._validator = validator;
}
// Property: validator
private List<Validator> _validatorList;
/**
* Adds a A method which is invoked during the validation phase for this component. It is
* expected to check the submitted value for this component, and if not acceptable
* then report a validation error for the component.
*/
public void addValidator( Validator validator)
{
if (validator == null) throw new NullPointerException("validator");
if (_validatorList == null)
_validatorList = new ArrayList<Validator>();
_validatorList.add(validator);
}
/**
* Removes a A method which is invoked during the validation phase for this component. It is
* expected to check the submitted value for this component, and if not acceptable
* then report a validation error for the component.
*/
public void removeValidator( Validator validator)
{
if (validator == null || _validatorList == null)
return;
_validatorList.remove(validator);
}
private static final Validator[] EMPTY_VALIDATOR_ARRAY = new Validator[0];
/**
* Gets all A method which is invoked during the validation phase for this component. It is
* expected to check the submitted value for this component, and if not acceptable
* then report a validation error for the component.
*/
public Validator[] getValidators()
{
return _validatorList== null? EMPTY_VALIDATOR_ARRAY : _validatorList.toArray(new Validator[_validatorList.size()]);
}
// Property: validatorMessage
private String _validatorMessage;
/**
* Gets Text which will be shown, if validation fails.
*
* @return the new validatorMessage value
*/
public String getValidatorMessage()
{
if (_validatorMessage != null)
{
return _validatorMessage;
}
ValueExpression expression = getValueExpression("validatorMessage");
if (expression != null)
{
return (String)expression.getValue(getFacesContext().getELContext());
}
return null;
}
/**
* Sets Text which will be shown, if validation fails.
*
* @param validatorMessage the new validatorMessage value
*/
public void setValidatorMessage(String validatorMessage)
{
this._validatorMessage = validatorMessage;
}
// Property: valueChangeListener
private MethodBinding _valueChangeListener;
/**
* Gets 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. The phase in which this method is invoked can be controlled
* via the immediate attribute.
*
* @return the new valueChangeListener value
* @deprecated
*/
public MethodBinding getValueChangeListener()
{
if (_valueChangeListener != null)
{
return _valueChangeListener;
}
ValueExpression expression = getValueExpression("valueChangeListener");
if (expression != null)
{
return (MethodBinding)expression.getValue(getFacesContext().getELContext());
}
return null;
}
/**
* Sets 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. The phase in which this method is invoked can be controlled
* via the immediate attribute.
*
* @param valueChangeListener the new valueChangeListener value
* @deprecated
*/
public void setValueChangeListener(MethodBinding valueChangeListener)
{
this._valueChangeListener = valueChangeListener;
}
// Property: valid
private boolean _valid = true;
/**
* Gets whether the component's value is currently valid
*
* @return the new valid value
*/
public boolean isValid()
{
return _valid;
}
/**
* Sets whether the component's value is currently valid
*
* @param valid the new valid value
*/
public void setValid(boolean valid)
{
this._valid = valid;
}
// Property: localValueSet
private boolean _localValueSet = false;
/**
* Gets whether a local value is currently set. If false, values are being retrieved from any attached ValueBinding
*
* @return the new localValueSet value
*/
public boolean isLocalValueSet()
{
return _localValueSet;
}
/**
* Sets whether a local value is currently set. If false, values are being retrieved from any attached ValueBinding
*
* @param localValueSet the new localValueSet value
*/
public void setLocalValueSet(boolean localValueSet)
{
this._localValueSet = localValueSet;
}
// Property: submittedValue
private Object _submittedValue;
/**
* 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.
*
* @return the new submittedValue value
*/
public Object getSubmittedValue()
{
return _submittedValue;
}
/**
* Sets 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.
*
* @param submittedValue the new submittedValue value
*/
public void setSubmittedValue(Object submittedValue)
{
this._submittedValue = submittedValue;
}
/**
* Adds a valueChange listener.
*
* @param listener the valueChange listener to add
*/
public void addValueChangeListener(
ValueChangeListener listener)
{
addFacesListener(listener);
}
/**
* Removes a valueChange listener.
*
* @param listener the valueChange listener to remove
*/
public void removeValueChangeListener(
ValueChangeListener listener)
{
removeFacesListener(listener);
}
/**
* Returns an array of attached valueChange listeners.
*
* @return an array of attached valueChange listeners.
*/
public ValueChangeListener[] getValueChangeListeners()
{
return (ValueChangeListener[])getFacesListeners(ValueChangeListener.class);
}
@Override
public Object saveState(FacesContext facesContext)
{
Object[] values = new Object[15];
values[0] = super.saveState(facesContext);
values[1] = _immediate;
values[2] = _immediateSet;
values[3] = _required;
values[4] = _requiredSet;
values[5] = _converterMessage;
values[6] = _requiredMessage;
values[8] = saveAttachedState(facesContext, _validatorList);
values[9] = _validatorMessage;
values[10] = saveAttachedState(facesContext, _valueChangeListener);
values[11] = _valid;
values[12] = _localValueSet;
values[13] = _submittedValue;
return values;
}
@Override
public void restoreState(FacesContext facesContext, Object state)
{
Object[] values = (Object[])state;
super.restoreState(facesContext,values[0]);
_immediate = (Boolean)values[1];
_immediateSet = (Boolean)values[2];
_required = (Boolean)values[3];
_requiredSet = (Boolean)values[4];
_converterMessage = (String)values[5];
_requiredMessage = (String)values[6];
_validatorList = (List<Validator>) restoreAttachedState(facesContext, values[8]);
_validatorMessage = (String)values[9];
_valueChangeListener = (MethodBinding)restoreAttachedState(facesContext, values[10]);
_valid = (Boolean)values[11];
_localValueSet = (Boolean)values[12];
_submittedValue = values[13];
}
@Override
public String getFamily()
{
return COMPONENT_FAMILY;
}
}