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

   1 /*
   2  * Copyright (C) 2015 Roland Haeder
   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 java.util.Arrays;
  21 import javax.faces.application.FacesMessage;
  22 import javax.faces.component.UIComponent;
  23 import javax.faces.component.UIInput;
  24 import javax.faces.component.ValueHolder;
  25 import javax.faces.context.FacesContext;
  26 import javax.faces.validator.Validator;
  27 import javax.faces.validator.ValidatorException;
  28 import org.mxchange.jcoreee.validator.BaseObjectValidator;
  29
  30 /**
  31  * A general boolean value validator.
  32  *
  33  * @author BalusC
  34  * @author Roland Haeder
  35  */
  36 public abstract class BaseBooleanValidator extends BaseObjectValidator implements Validator {
  37
  38         @Override
  39         public void preValidate (final FacesContext context, final UIComponent component, final Object value, final String[] requiredFields) throws ValidatorException {
  40                 // Trace message
  41                 this.getLogger().trace(MessageFormat.format("context={0},component={1},value={2},requiredFields={3} - CALLED!", context, component, value, Arrays.toString(requiredFields))); //NOI18N
  42
  43                 // Pre-validate
  44                 super.preValidate(context, component, value, requiredFields);
  45
  46                 // Get client id and init message + key
  47                 String clientId = component.getClientId();
  48                 FacesMessage facesMessage = null;
  49
  50                 // So far all fine, no check if the field is fine
  51                 for (final String field : requiredFields) {
  52                         // Debug message
  53                         this.getLogger().debug(MessageFormat.format("field={0},clientId={1}", field, clientId)); //NOI18N
  54
  55                         // Is it the same?
  56                         if (clientId.endsWith(field)) {
  57                                 // Compare value's type
  58                                 if (!(value instanceof Boolean)) {
  59                                         // Value is not right type
  60                                         facesMessage = new FacesMessage(this.getMessageStringFromKey(String.format("error.%s.is_not_boolean", field))); //NOI18N
  61                                         break;
  62                                 }
  63
  64                                 // Cast to string
  65                                 Boolean bool = (Boolean) value;
  66
  67                                 // Is it false?
  68                                 if (bool.equals(Boolean.FALSE)) {
  69                                         // Default message
  70                                         String requiredMessage = ((UIInput) component).getRequiredMessage();
  71
  72                                         if (null == requiredMessage) {
  73                                                 Object label = component.getAttributes().get("label"); //NOI18N
  74
  75                                                 // Check if label is null, or zero length
  76                                                 if ((null == label) || (label instanceof CharSequence && ((CharSequence) label).length() == 0)) {
  77                                                         label = component.getValueExpression("label"); //NOI18N
  78                                                 }
  79
  80                                                 // Label is still null?
  81                                                 if (null == label) {
  82                                                         label = component.getClientId(context);
  83                                                 }
  84
  85                                                 // Set message
  86                                                 requiredMessage = MessageFormat.format(UIInput.REQUIRED_MESSAGE_ID, label);
  87
  88                                                 // Set value to false in UI component
  89                                                 ((ValueHolder) component).setValue(Boolean.FALSE);
  90                                         }
  91
  92                                         // Abort processing here
  93                                         facesMessage = new FacesMessage(FacesMessage.SEVERITY_ERROR, requiredMessage, requiredMessage);
  94                                         break;
  95                                 }
  96                         }
  97                 }
  98
  99                 // Is facesMessage set?
 100                 if (facesMessage != null) {
 101                         // Abort here
 102                         throw new ValidatorException(facesMessage);
 103                 }
 104         }
 105 }