/*
    * 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.event;
  
  import org.apache.myfaces.tobago.internal.component.AbstractUICollapsiblePanel;
  import org.apache.myfaces.tobago.util.ComponentUtils;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import javax.faces.component.StateHolder;
  import javax.faces.component.UIComponent;
  import javax.faces.component.UIViewRoot;
  import javax.faces.context.FacesContext;
  import javax.faces.event.AbortProcessingException;
  import javax.faces.event.ActionEvent;
  import javax.faces.event.ActionListener;
  import java.lang.invoke.MethodHandles;
  
  public class CollapsibleActionListener implements ActionListener, StateHolder {
  
    private static final Logger LOG = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
  
    private String forId;
  
    private boolean transientFlag;
  
    public CollapsibleActionListener() {
      // for state holder
    }
  
    public CollapsibleActionListener(final String forId) {
      this.forId = forId;
    }
  
    @Override
    public void processAction(final ActionEvent actionEvent) throws AbortProcessingException {
      final FacesContext facesContext = FacesContext.getCurrentInstance();
      final UIViewRoot viewRoot = facesContext.getViewRoot();
      if (viewRoot != null) {
        final String forClientId = ComponentUtils.evaluateClientId(facesContext, actionEvent.getComponent(), forId);
  
        final UIComponent component = viewRoot.findComponent(forClientId);
        if (component instanceof AbstractUICollapsiblePanel) {
          ((AbstractUICollapsiblePanel) component).processState();
        } else {
          LOG.error("Wrong component class for id: '{}'. Type is {} but expected type is {}",
              forClientId, component.getClass().getName(), AbstractUICollapsiblePanel.class.getName());
        }
      }
    }
  
    @Override
    public Object saveState(final FacesContext context) {
      return forId;
    }
  
    @Override
    public void restoreState(final FacesContext context, final Object state) {
      this.forId = (String) state;
    }
  
    @Override
    public boolean isTransient() {
      return transientFlag;
    }
  
    @Override
    public void setTransient(final boolean newTransientValue) {
      this.transientFlag = newTransientValue;
    }
  }