/*
    * 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.OnComponentCreated;
  import org.apache.myfaces.tobago.event.FacesEventWrapper;
  import org.apache.myfaces.tobago.model.Wizard;
  
  import javax.faces.component.UIComponent;
  import javax.faces.context.FacesContext;
  import javax.faces.el.ValueBinding;
  import javax.faces.event.AbortProcessingException;
  import javax.faces.event.FacesEvent;
  import java.io.IOException;
  
  public abstract class AbstractUIWizard extends AbstractUIPanel implements OnComponentCreated {
  
    public static final String COMPONENT_TYPE = "org.apache.myfaces.tobago.Wizard";
  
    // todo: how to use a auto-generated controller?
    private Wizard controller;
  
    private String var;
  
    private String outcome;
    private String title;
    private Boolean allowJumpForward;
  
    @Override
    public void processDecodes(FacesContext facesContext) {
      if (var != null) {
        facesContext.getExternalContext().getRequestMap().put(var, getController());
      }
      super.processDecodes(facesContext);
    }
  
    @Override
    public void decode(FacesContext facesContext) {
      super.decode(facesContext);
      if (var != null) {
        facesContext.getExternalContext().getRequestMap().remove(var);
      }
    }
  
    @Override
    public void queueEvent(FacesEvent event) {
      super.queueEvent(new FacesEventWrapper(event, this));
    }
  
    @Override
    public void broadcast(FacesEvent event) throws AbortProcessingException {
      if (event instanceof FacesEventWrapper) {
        FacesContext facesContext = FacesContext.getCurrentInstance();
        if (var != null) {
          facesContext.getExternalContext().getRequestMap().put(var, getController());
        }
        FacesEvent originalEvent = ((FacesEventWrapper) event).getWrappedFacesEvent();
        originalEvent.getComponent().broadcast(originalEvent);
        if (var != null) {
          facesContext.getExternalContext().getRequestMap().remove(var);
        }
      } else {
        super.broadcast(event);
      }
    }
  
    @Override
    public void encodeBegin(FacesContext facesContext) throws IOException {
      if (var != null) {
        facesContext.getExternalContext().getRequestMap().put(var, getController());
      }
      super.encodeBegin(facesContext);
    }
  
    @Override
    public void encodeEnd(FacesContext facesContext) throws IOException {
      super.encodeEnd(facesContext);
      if (var != null) {
        facesContext.getExternalContext().getRequestMap().remove(var);
      }
    }
  
   public void onComponentCreated(FacesContext context, UIComponent parent) {
     Wizard wizard = getController();
     wizard.register();
     if (getOutcome() != null) {
       getController().getCurrentStep().setOutcome(getOutcome());
     }
     if (getTitle() != null) {
       getController().getCurrentStep().setTitle(getTitle());
     }
   }
 
   @Override
   public Object saveState(FacesContext facesContext) {
     Object[] state = new Object[3];
     state[0] = super.saveState(facesContext);
     state[1] = var;
     state[2] = controller;
     return state;
   }
 
   @Override
   public void restoreState(FacesContext facesContext, Object state) {
     Object[] values = (Object[]) state;
     super.restoreState(facesContext, values[0]);
     var = (String) values[1];
     controller = (Wizard) values[2];
   }
 
   public Wizard getController() {
     if (controller != null) {
       return controller;
     }
     ValueBinding vb = getValueBinding("controller"); // xxx const
     if (vb != null) {
       return (Wizard) vb.getValue(getFacesContext());
     } else {
       return null;
     }
   }
 
   public void setController(Wizard controller) {
     this.controller = controller;
   }
 
   public String getVar() {
     return var;
   }
 
   public void setVar(String var) {
     this.var = var;
   }
 
   public java.lang.String getOutcome() {
     if (outcome != null) {
       return outcome;
     }
     javax.faces.el.ValueBinding vb = getValueBinding("outcome");
     if (vb != null) {
       return (java.lang.String) vb.getValue(getFacesContext());
     }
     return null;
   }
 
 
   public void setOutcome(String outcome) {
     this.outcome = outcome;
   }
 
   public String getTitle() {
     if (title != null) {
       return title;
     }
     javax.faces.el.ValueBinding vb = getValueBinding("title");
     if (vb != null) {
       return (java.lang.String) vb.getValue(getFacesContext());
     }
     return null;
   }
 
 
   public void setTitle(String title) {
     this.title = title;
   }
 
   public boolean isAllowJumpForward() {
     if (allowJumpForward != null) {
       return allowJumpForward;
     }
     javax.faces.el.ValueBinding vb = getValueBinding("allowJumpForward");
     if (vb != null) {
       Boolean bool = (Boolean) vb.getValue(getFacesContext());
       if (bool != null) {
         return bool;
       }
     }
     return false;
   }
 
   public void setAllowJumpForward(Boolean allowJumpForward) {
     this.allowJumpForward = allowJumpForward;
 //    getController().removeForwardSteps();
   }
 }