Android Open Source - android-core Event Handler

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License

The source code is released under:

Apache License

Java Source Code

/** 
 * [SIMINOV FRAMEWORK]/*from   w w w .  ja  va  2 s  . c om*/
 * Copyright [2015] [Siminov Software Solution LLP|support@siminov.com]
 *
 * 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 siminov.core.events;

import java.util.Iterator;

import siminov.core.resource.ResourceManager;
import siminov.core.utils.ClassUtils;

/**
 * It provides the event handler instances.
 */
public class EventHandler {

  private static EventHandler eventHandler = null;
  
  private ISiminovEvents coreEventHandler = null;
  private IDatabaseEvents databaseEventHandler = null;
  
  private ResourceManager resourceManager = ResourceManager.getInstance();
  
  /**
   * Event Handler Constructor
   */
  private EventHandler() {
    
    Iterator<String> events = resourceManager.getApplicationDescriptor().getEvents();
    while(events.hasNext()) {
      String event = events.next();
      
      Object object = ClassUtils.createClassInstance(event);
      if(object instanceof ISiminovEvents) {
        coreEventHandler = (ISiminovEvents) object;
      } else if(object instanceof IDatabaseEvents) {
        databaseEventHandler = (IDatabaseEvents) object;
      }
    }
  }
  
  /**
   * Returns the singleton instance of Event Handler
   * @return EventHandler Singleton instance of Event Handler
   */
  public static EventHandler getInstance() {
    if(eventHandler == null) {
      eventHandler = new EventHandler();
    }
    
    return eventHandler;
  }

  /**
   * Get core event handler registered by application.
   * @return ISiminovEvents object implemented by application.
   */
  public ISiminovEvents getSiminovEventHandler() {
    return this.coreEventHandler;
  }
  
  /**
   * Get database event handler registered by application.
   * @return IDatabaseEvents object implemented by application.
   */
  public IDatabaseEvents getDatabaseEventHandler() {
    return this.databaseEventHandler;
  }
  
}

Java Source Code List

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