/*
    * 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.internal.component;
  
  import org.apache.myfaces.tobago.component.Attributes;
  import org.apache.myfaces.tobago.component.Facets;
  import org.apache.myfaces.tobago.model.CollapseMode;
  
  import javax.el.ValueExpression;
  import javax.faces.component.UIComponent;
  import javax.faces.context.FacesContext;
  
  /**
   * Base class for collapsible panels.
   */
  public abstract class AbstractUICollapsiblePanel extends AbstractUIPanelBase {
  
    private transient Boolean submittedCollapsed;
  
    @Override
    public void processDecodes(final FacesContext facesContext) {
      if (isNormalLifecycle()) {
        super.processDecodes(facesContext);
      } else {
        decode(facesContext);
        final UIComponent bar = getFacet(Facets.BAR); // XXX is from Box or Section
        if (bar != null) {
          bar.processDecodes(facesContext);
        }
        final UIComponent label = getFacet(Facets.LABEL); // XXX is from Box or Section
        if (label != null) {
          label.processDecodes(facesContext);
        }
      }
    }
  
    @Override
    public void processValidators(final FacesContext facesContext) {
      if (isNormalLifecycle()) {
        super.processValidators(facesContext);
      } else {
        final UIComponent bar = getFacet(Facets.BAR); // XXX is from Box or Section
        if (bar != null) {
          bar.processValidators(facesContext);
        }
        final UIComponent label = getFacet(Facets.LABEL); // XXX is from Box or Section
        if (label != null) {
          label.processValidators(facesContext);
        }
      }
    }
  
    @Override
    public void processUpdates(final FacesContext facesContext) {
      if (isNormalLifecycle()) {
        super.processUpdates(facesContext);
      } else {
        final UIComponent bar = getFacet(Facets.BAR); // XXX is from Box or Section
        if (bar != null) {
          bar.processUpdates(facesContext);
        }
        final UIComponent label = getFacet(Facets.LABEL); // XXX is from Box or Section
        if (label != null) {
          label.processUpdates(facesContext);
        }
      }
    }
  
    public boolean isNormalLifecycle() {
      return getCollapsedMode() == CollapseMode.hidden || !isCollapsed();
    }
  
    public abstract boolean isCollapsed();
  
    public abstract void setCollapsed(final boolean collapsed);
  
    public abstract CollapseMode getCollapsedMode();
  
    public void setSubmittedCollapsed(final Boolean submittedCollapsed) {
      this.submittedCollapsed = submittedCollapsed;
    }
  
   public void processState() {
     if (submittedCollapsed != null) {
       final ValueExpression valueExpression = getValueExpression(Attributes.collapsed.name());
       if (valueExpression != null) {
         valueExpression.setValue(FacesContext.getCurrentInstance().getELContext(), submittedCollapsed);
       } else {
         setCollapsed(submittedCollapsed);
       }
       submittedCollapsed = null;
     }
   }
 }