content: package act.view;
  
  /*-
   * #%L
   * ACT Framework
   * %%
   * Copyright (C) 2014 - 2017 ActFramework
   * %%
   * Licensed 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.
   * #L%
   */
  
  import act.app.ActionContext;
  import act.util.ActContext;
  import act.util.JsonUtilConfig;
  import act.util.PropertySpec;
  import org.osgl.$;
  import org.osgl.http.H;
  import org.osgl.http.Http;
  import org.osgl.mvc.result.RenderContent;
  import org.osgl.mvc.result.RenderJSON;
  import org.osgl.util.Output;
  
  import java.io.Writer;
  
  /**
   * An enhanced version of {@link org.osgl.mvc.result.RenderJSON} that
   * allows {@link act.util.PropertySpec} to be applied to control the
   * output fields
   */
  public class FilteredRenderJSON extends RenderJSON {
  
      public static final FilteredRenderJSON _INSTANCE = new FilteredRenderJSON() {
          @Override
          public String content() {
              return payload().message;
          }
  
          @Override
          public $.Visitor<Writer> contentWriter() {
              return payload().contentWriter;
          }
  
          @Override
          public Http.Status status() {
              Http.Status status = payload().status;
              return null == status ? super.status() : status;
          }
  
          @Override
          public long timestamp() {
              return payload().timestamp;
          }
  
          @Override
          public boolean isOutputEncoding() {
              return payload().outputEncoding();
          }
  
          @Override
          public RenderContent setOutputEncoding(boolean outputEncoding) {
              payload().outputEncoding(outputEncoding);
              return this;
          }
  
          @Override
          public H.Format format() {
              return H.Format.JSON;
          }
      };
  
      private FilteredRenderJSON() {
          super(H.Format.JSON);
      }
  
      public FilteredRenderJSON(final Object v, final PropertySpec.MetaInfo spec, final ActContext context) {
          super(new JsonUtilConfig.JsonWriter(v, spec, false, context));
      }
  
      public FilteredRenderJSON(H.Status status, final Object v, final PropertySpec.MetaInfo spec, final ActContext context) {
          super(status, new JsonUtilConfig.JsonWriter(v, spec, false, context));
      }
  
      public static FilteredRenderJSON of(final Object v, final PropertySpec.MetaInfo spec, final ActionContext context) {
          if (v instanceof String) {
              touchPayload().message((String) v);
          } else if (v instanceof $.Visitor) {
              touchPayload().contentWriter(($.Visitor) v);
          } else {
              if (context.isNonBlock()) {
                  touchPayload().stringContentProducer(new JsonUtilConfig.JsonWriter(v, spec, false, context).asContentProducer());
              } else {
                  touchPayload().contentWriter(new JsonUtilConfig.JsonWriter(v, spec, false, context));
              }
          }
          return _INSTANCE;
      }
  
      public static FilteredRenderJSON of(H.Status status, final Object v, final PropertySpec.MetaInfo spec, final ActionContext context) {
          touchPayload().status(status);
          return of(v, spec, context);
      }
  }
  