Package javax.faces.component

Source Code of javax.faces.component.UIInput

// WARNING: This file was automatically generated. Do not edit it directly,
//          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.ELException;
import javax.el.ValueExpression;
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.el.ValueBinding;
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";

    /**
     * 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 (ELException elException)
        {
            String exceptionMessage = elException.getMessage();
            if (exceptionMessage == null)
            {
                _MessageUtils.addErrorMessage(context, this, UPDATE_MESSAGE_ID, new Object[]{_MessageUtils.getLabel(context,this)});
            }
            else
            {
                _MessageUtils.addErrorMessage(context, this, elException);
            }
            setValid(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);
        }
    }

    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");
        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));
        }
    }

    /**
     * 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()
    {
        setValue(null);
        setSubmittedValue(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 = false;
  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 Validator Method, which should be invoked for validation.
   *
   * @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 Validator Method, which should be invoked for validation.
   *
   * @param validator  the new validator value
   * @deprecated
   */
  public void setValidator(MethodBinding validator)
  {
    this._validator = validator;
  }

  // Property: validator
  private List<Validator> _validatorList;

  /**
   * Adds a Validator Method, which should be invoked for validation.
   */
  public void addValidator( Validator validator)
  {
    if (validator == null) throw new NullPointerException("validator");
    if (_validatorList == null)
      _validatorList = new ArrayList<Validator>();

    _validatorList.add(validator);
  }

  /**
   * Removes a Validator Method, which should be invoked for validation.
   */
  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 Validator Method, which should be invoked for validation.
   */
  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 called when the value changed.
   *
   * @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 called when the value changed.
   *
   * @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;
  }
}
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