/*
    * 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 org.apache.myfaces.tobago.validator;
  
  import org.apache.myfaces.tobago.util.ComponentUtils;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import javax.faces.component.UIComponent;
  import javax.faces.context.FacesContext;
  import javax.faces.event.AbortProcessingException;
  import javax.faces.event.ActionEvent;
  import javax.faces.event.ActionListener;
  import javax.faces.event.PhaseId;
  import java.lang.invoke.MethodHandles;
  import java.util.StringTokenizer;
  
  public class ClearValidatorsActionListener implements ActionListener {
  
    private static final Logger LOG = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
  
    public PhaseId getPhaseId() {
      return PhaseId.APPLY_REQUEST_VALUES;
    }
  
    @Override
    public void processAction(final ActionEvent actionEvent) throws AbortProcessingException {
      if (LOG.isDebugEnabled()) {
        LOG.debug("actionEvent = '" + actionEvent + "'");
      }
      final UIComponent source = actionEvent.getComponent();
      final String clearValidatorsFieldIds
          = (String) ComponentUtils.findParameter(source, "clearValidatorsFieldIds");
  
      if (LOG.isDebugEnabled()) {
        LOG.debug("clearValidatorsFieldIds = '" + clearValidatorsFieldIds + "'");
      }
  
      // FIXME: finding mechanism??? JSF ???
  
      final StringTokenizer tokenizer = new StringTokenizer(clearValidatorsFieldIds, ",");
      while (tokenizer.hasMoreTokens()) {
        final String clearValidatorsFieldId = tokenizer.nextToken();
  
        UIComponent component = source.findComponent(clearValidatorsFieldId);
        if (LOG.isDebugEnabled()) {
          LOG.debug("component = '" + component + "'");
        }
  
        if (component == null) { // not found locally
          if (LOG.isDebugEnabled()) {
            LOG.debug("Component not found locally, asking the tree.");
          }
          final FacesContext facesContext = FacesContext.getCurrentInstance();
          component = facesContext.getViewRoot().findComponent(clearValidatorsFieldId);
        }
  
        if (component == null) { // not found
          LOG.warn("Component not found.");
        } else {
  //        component.clearValidators();
          LOG.error("NO LONGER AVAILABLE: component.clearValidators();");
        }
      }
    }
  
  }