How to restart a button, bring it to the intial state (actionlistener, threads)

[zhe zen]

Hi,

I am adapting an applet from some open source code to my need and have a problem with reseting the its applet to the initial state.
The Applet has two buttons: "Run" and "Reset".
runbutton starts an algorithm, which is in a runnable class.
resetbutton is currently just reseting the parameters of this algorithm to the intial state.

I would like to reset the applet with a button, so that when i press the runbutton the applet is just at the same stage as befor pressing the start button for the first time.

Here the crucial parts of the code:

public class AntTSP extends Applet {
    public void init() {
        net = new Network();
        ...
            runButton   = new Button("Run");
	    runButton.addActionListener(new ActionListener() {
	        public void actionPerformed(ActionEvent e) {
	        	
	        choice = algorithmChoice.getSelectedIndex();

		    net.start(choice); //Start of the algorithm in the Network clas
		    runButton.setEnabled(false);
	        }
	    });
        buttonPanel.add(runButton);
        

        resetButton = new Button("Reset");
	    resetButton.addActionListener(new ActionListener() {
	        public void actionPerformed(ActionEvent e) {
		    net.reset();
		   runButton.setEnabled(true);
	        }
	    });
  }
}

The network class:

class Network extends Observable implements Runnable {

...
      public synchronized void start(int choice) {
		this.choice = choice;
		if (netThread == null) {
			netThread  = new Thread(this);
			netThread.start();
		}
	}

        public void run() {
		//if choice is 0, then ants is selected
		if (choice == 0) {
                ...
		}
		if(choice == 1){
		...	
		}
	}

       public synchronized void reset() {
                setChanged()
		notifyObservers(null);
		stop();
	}

      public synchronized void stop() {
		timeToDie = true;
		notify();
	}

}

Thanks a lot for all help.

Zhe

[Rob Spoor]

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