content: /*
   * Copyright 2010-2025 Hyland Software, Inc. and its affiliates.
   *
   * 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.
   */
  package org.activiti.engine.impl.util;
  
  import java.util.Calendar;
  import java.util.Date;
  import java.util.GregorianCalendar;
  import java.util.TimeZone;
  
  /**
  
   */
  public class DefaultClockImpl implements org.activiti.engine.runtime.Clock {
  
      private static volatile Calendar CURRENT_TIME;
  
      @Override
      public void setCurrentTime(Date currentTime) {
          Calendar time = null;
  
          if (currentTime != null) {
              time = new GregorianCalendar();
              time.setTime(currentTime);
          }
  
          setCurrentCalendar(time);
      }
  
      @Override
      public void setCurrentCalendar(Calendar currentTime) {
          CURRENT_TIME = currentTime;
      }
  
      @Override
      public void reset() {
          CURRENT_TIME = null;
      }
  
      @Override
      public Date getCurrentTime() {
          return CURRENT_TIME == null ? new Date() : CURRENT_TIME.getTime();
      }
  
      @Override
      public Calendar getCurrentCalendar() {
          return CURRENT_TIME == null ? new GregorianCalendar() : (Calendar) CURRENT_TIME.clone();
      }
  
      @Override
      public Calendar getCurrentCalendar(TimeZone timeZone) {
          return TimeZoneUtil.convertToTimeZone(getCurrentCalendar(), timeZone);
      }
  
      @Override
      public TimeZone getCurrentTimeZone() {
          return getCurrentCalendar().getTimeZone();
      }
  }
  