view src/samer/tools/SwitchTask.java @ 0:bf79fb79ee13

Initial Mercurial check in.

/*
 *	Copyright (c) 2001, Samer Abdallah, King's College London.
 *	All rights reserved.
 *
 *	This software is provided AS iS and WITHOUT ANY WARRANTY; 
 *	without even the implied warranty of MERCHANTABILITY or 
 *	FITNESS FOR A PARTICULAR PURPOSE.
 */

package samer.tools;
import samer.core.types.*;

/**
  *		This is a task that runs a single child task
  *		every N iterations, that is, at some integer
  *      sub-multiple of the main loop rate
  */

public class SwitchTask implements Task
{
	private Task	task;
	private VBoolean	enable;

	public SwitchTask(Task t) { this(true,t); }
	public SwitchTask(boolean e, Task t) { 
		enable=new VBoolean("enable",e); 
		enable.value=e; enable.changed(); task=t; 
	}


	public void enable() { enable.value=true; enable.changed(); }
	public void disable() { enable.value=false; enable.changed(); }

	public final void starting() { if (enable.value) task.starting(); }
	public final void stopping() { if (enable.value) task.stopping(); }
	public final void run() throws Exception { if (enable.value) task.run(); }

	public void dispose() { task.dispose(); }
	public String toString() { return "Switch("+enable.value+"):"+task; }
}