src/org/mxchange/jcoreee/validator/bool/BaseBooleanValidator.java

   1 /*
   2  * Copyright (C) 2016, 2017 Roland Häder
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 package org.mxchange.jcoreee.validator.bool;
  18
  19 import java.text.MessageFormat;
  20 import javax.faces.application.FacesMessage;
  21 import javax.faces.component.UIComponent;
  22 import javax.faces.component.UIInput;
  23 import javax.faces.component.ValueHolder;
  24 import javax.faces.context.FacesContext;
  25 import javax.faces.validator.Validator;
  26 import javax.faces.validator.ValidatorException;
  27 import org.mxchange.jcoreee.validator.BaseObjectValidator;
  28
  29 /**
  30  * A general boolean value validator.
  31  * <p>
  32  * @author BalusC
  33  * @author Roland Häder<roland@mxchange.org>
  34  */
  35 public abstract class BaseBooleanValidator extends BaseObjectValidator implements Validator {
  36
  37         /**
  38          * Serial number
  39          */
  40         private static final long serialVersionUID = 42_378_178_715_910_689L;
  41
  42         @Override
  43         public void preValidate (final FacesContext context, final UIComponent component, final Object value, final String[] requiredFields, Boolean allowNull) throws ValidatorException {
  44                 // Trace message
  45                 //* NOISY-DEBUG: */ System.out.println(MessageFormat.format("preValidate: context={0},component={1},value={2},requiredFields={3} - CALLED!", context, component, value, Arrays.toString(requiredFields))); //NOI18N
  46
  47                 // Pre-validate
  48                 super.preValidate(context, component, value, requiredFields, allowNull);
  49
  50                 // Get client id and init message + key
  51                 String clientId = component.getClientId();
  52                 String requiredMessage = null;
  53
  54                 // So far all fine, no check if the field is fine
  55                 for (final String field : requiredFields) {
  56                         // Debug message
  57                         //this.getLogger().logDebug(MessageFormat.format("preValidate: field={0},clientId={1}", field, clientId)); //NOI18N
  58
  59                         // Is it the same?
  60                         if (clientId.endsWith(field)) {
  61                                 // Compare value's type
  62                                 if (!(value instanceof Boolean)) {
  63                                         // Generate message
  64                                         requiredMessage = MessageFormat.format("Field {0} is not Boolean: {1}", field, value); //NOI18N
  65
  66                                         // Value is not right type
  67                                         break;
  68                                 }
  69
  70                                 // Cast to string
  71                                 Boolean bool = (Boolean) value;
  72
  73                                 // Is it false?
  74                                 if (bool.equals(Boolean.FALSE)) {
  75                                         // Default message
  76                                         requiredMessage = ((UIInput) component).getRequiredMessage();
  77
  78                                         if (null == requiredMessage) {
  79                                                 Object label = component.getAttributes().get("label"); //NOI18N
  80
  81                                                 // Check if label is null, or zero length
  82                                                 if ((null == label) || (label instanceof CharSequence && ((CharSequence) label).length() == 0)) {
  83                                                         label = component.getValueExpression("label"); //NOI18N
  84                                                 }
  85
  86                                                 // Label is still null?
  87                                                 if (null == label) {
  88                                                         label = component.getClientId(context);
  89                                                 }
  90
  91                                                 // Set message
  92                                                 requiredMessage = MessageFormat.format(UIInput.REQUIRED_MESSAGE_ID, label);
  93
  94                                                 // Set value to false in UI component
  95                                                 ((ValueHolder) component).setValue(Boolean.FALSE);
  96                                         }
  97
  98                                         // Abort processing here
  99                                         break;
 100                                 }
 101                         }
 102                 }
 103
 104                 // Is facesMessage set?
 105                 if (null != requiredMessage) {
 106                         // Abort here
 107                         throw new ValidatorException(new FacesMessage(FacesMessage.SEVERITY_ERROR, requiredMessage, requiredMessage));
 108                 }
 109         }
 110
 111 }