/*
    * Copyright (c) 2011-2024 PrimeFaces Extensions
    *
    *  Permission is hereby granted, free of charge, to any person obtaining a copy
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    *  copies of the Software, and to permit persons to whom the Software is
    *  furnished to do so, subject to the following conditions:
   *
   *  The above copyright notice and this permission notice shall be included in
   *  all copies or substantial portions of the Software.
   *
   *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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   *  THE SOFTWARE.
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  package org.primefaces.extensions.behavior.javascript;
  
  import java.util.Collection;
  
  import javax.faces.component.UIComponent;
  import javax.faces.component.UIParameter;
  import javax.faces.component.behavior.ClientBehavior;
  import javax.faces.component.behavior.ClientBehaviorContext;
  import javax.faces.context.FacesContext;
  import javax.faces.render.ClientBehaviorRenderer;
  
  import org.primefaces.component.api.ClientBehaviorRenderingMode;
  
  /**
   * {@link ClientBehaviorRenderer} implementation for the {@link JavascriptBehavior}.
   *
   * @author Thomas Andraschko / last modified by $Author$
   * @version $Revision$
   * @since 0.2
   */
  public class JavascriptBehaviorRenderer extends ClientBehaviorRenderer {
  
      @Override
      public String getScript(final ClientBehaviorContext behaviorContext, final ClientBehavior behavior) {
          final JavascriptBehavior javascriptBehavior = (JavascriptBehavior) behavior;
          if (javascriptBehavior.isDisabled()) {
              return null;
          }
  
          final FacesContext context = behaviorContext.getFacesContext();
          final UIComponent component = behaviorContext.getComponent();
          String source = behaviorContext.getSourceId();
          if (source == null) {
              source = component.getClientId(context);
          }
  
          final StringBuilder script = new StringBuilder();
          script.append("PrimeFacesExt.behavior.Javascript({");
          script.append("source:'").append(source).append("'");
          script.append(",event:'").append(behaviorContext.getEventName()).append("'");
          script.append(",execute:function(source,event,params,ext){");
          script.append(javascriptBehavior.getExecute()).append(";}");
  
          // params
          boolean paramWritten = false;
  
          for (int i = 0; i < component.getChildCount(); i++) {
              final UIComponent child = component.getChildren().get(i);
              if (child instanceof UIParameter) {
                  final UIParameter parameter = (UIParameter) child;
  
                  if (paramWritten) {
                      script.append(",");
                  }
                  else {
                      paramWritten = true;
                      script.append(",params:{");
                  }
  
                  script.append("'");
                  script.append(parameter.getName()).append("':'").append(parameter.getValue());
                  script.append("'");
              }
          }
  
          if (paramWritten) {
              script.append("}");
          }
  
          ClientBehaviorRenderingMode renderingMode = getClientBehaviorRenderingMode(behaviorContext);
  
          if (ClientBehaviorRenderingMode.UNOBSTRUSIVE.equals(renderingMode)) {
              script.append("},ext);");
          }
          else {
              script.append("});");
          }
  
         return script.toString();
     }
 
     protected static ClientBehaviorRenderingMode getClientBehaviorRenderingMode(final ClientBehaviorContext behaviorContext) {
         final Collection<ClientBehaviorContext.Parameter> behaviorParameters = behaviorContext.getParameters();
         if (behaviorParameters == null || behaviorParameters.isEmpty()) {
             return null;
         }
         for (final ClientBehaviorContext.Parameter behaviorParameter : behaviorParameters) {
             if (behaviorParameter.getValue() instanceof ClientBehaviorRenderingMode) {
                 return (ClientBehaviorRenderingMode) behaviorParameter.getValue();
             }
         }
         return null;
     }
 }