package com.foundation.attribute;

import com.common.thread.*;
import com.common.debug.*;
import com.foundation.controller.ViewController;
import com.foundation.view.IViewContext;
import com.foundation.view.IViewRequestHandler;
import com.foundation.view.ViewSystemMetadata;

/**
 * Copyright Wynne Crisman 2005<p>
 */
public class SimulatedViewController extends ViewController {
	/**
	 * Copyright Wynne Crisman 2005<p>
	 * Wrappres a runnable and allows the creating thread to wait for the runnable to complete execution.
	 */
	public static class Task implements Runnable {
		private IRunnable runnable = null;
		private boolean isComplete = false;
		private Object result = null;
		
		/**
		 * Task constructor.
		 * @param runnable
		 */
		public Task(IRunnable runnable) {
			this.runnable = runnable;
		}//Task()//
		/* (non-Javadoc)
		 * @see java.lang.Runnable#run()
		 */
		public void run() {
			result = runnable.run();
			
			synchronized(this) {
				isComplete = true;
				notifyAll();
			}//synchronized//
		}//run()//
		/**
		 * Waits for and retreives the result.
		 * @return The result of the wrappered runnable.
		 */
		public Object waitForResult() {
			synchronized(this) {
				while(!isComplete) {
					try {
						wait(0);
					}//try//
					catch(Throwable e) {
						Debug.handle(e);
					}//catch//
				}//while//
			}//synchronized//
			
			return result;
		}//waitForResult()//
	}//Task//
	
	/**
	 * SimulatedViewController constructor.
	 */
	public SimulatedViewController() {
		super(new IViewContext() {
			SimpleEventLoop loop = new SimpleEventLoop();
			
			public void setApplicationData(Object applicationData) {
			}
			public Object getApplicationData() {
				return null;
			}
			public IViewRequestHandler getRequestHandler() {
				return loop;
			}
			public ViewSystemMetadata getViewSystemMetadata() {
				return null;
			}
			public Object getApplicationData(Object key) {
				return null;
			}
			public void setApplicationData(Object key, Object applicationData) {
			}
		});
		//Start the event thread simulation.//
		//eventThread = new EventThread();
		//ThreadService.run(eventThread);
	}//SimualtedViewController()//
	/* (non-Javadoc)
	 * @see com.foundation.controller.ViewController#validate()
	 */
	public boolean validate() {
		return true;
	}//validate()//
	/* (non-Javadoc)
	 * @see com.foundation.controller.AbstractViewController#getViewClass()
	 */
	protected Class getViewClass() {
		return null;
	}//getViewClass()//
	/* (non-Javadoc)
	 * @see com.foundation.controller.ViewController#execute(com.common.thread.IRunnable)
	 */
	public Object execute(IRunnable runnable) {
		return getContext().getRequestHandler().execute(runnable, true);
	}//execute()//
	/* (non-Javadoc)
	 * @see com.foundation.controller.ViewController#executeAsynch(com.common.thread.IRunnable)
	 */
	public void executeAsynch(IRunnable runnable) {
		getContext().getRequestHandler().execute(runnable, false);
	}//executeAsynch()//
}//SimulatedViewController//