/* PrimeTriangle.java

   Run a MonitoredPrimeTriangle in its own thread.
   Works tightly with PrimeTriangleApplet.

   - Thread stuff isn't very clean or completely debugged.
   - Monitors need to be packaged better.

   Rich Acuff <Rich@Dr-Amy.com>
   28-Sep-97
 */

public class PrimeTriangleThread extends Thread {
    MonitoredPrimeTriangle pt;
    PrimeTriangleApplet ap;
	int[] currentRow;
    Monitor[] monitors;
    MonitorDisplay disp = null;
    boolean keepGoing;

    IntMonitor rowM;
    DualMonitor ispM;
    DualMonitor reM;
    DualMonitor swapM;
    MemMonitor mem;
    TimeMonitor rowTimeM;
    TimeMonitor totalTimeM;

    public PrimeTriangleThread (PrimeTriangleApplet a) {
        ap = a;
    }

    public void run() {
        ap.stopButton.show();

        rowM = new IntMonitor(ap.thisRowLabel);
        ispM = new DualMonitor(ap.rowIsPrimeLabel, ap.totalIsPrimeLabel);
        reM = new DualMonitor(ap.rowRearrangeLabel, ap.totalRearrangeLabel);
        swapM = new DualMonitor(ap.rowSwapLabel, ap.totalSwapLabel);
        mem = new MemMonitor(ap.freeLabel, ap.totalLabel);
        rowTimeM = new TimeMonitor(ap.rowTimeLabel);
        totalTimeM = new TimeMonitor(ap.totalTimeLabel);

        //yeah, yeah, this needs names  (enumerations, acutally...)
        monitors = new Monitor[7];
        monitors[0] = rowM;
        monitors[1] = ispM;
        monitors[2] = reM;
        monitors[3] = swapM;
        monitors[4] = mem;
        monitors[5] = rowTimeM;
        monitors[6] = totalTimeM;

        try {
            int nRows;
            int[][] rows;
            try {nRows = Integer.parseInt(ap.rowField.getText());}
             catch (NumberFormatException e) {nRows = 0;}
            if (nRows < 1) {
                ap.out.setText ("Please put an integer greater than zero in for the number of rows.");
            } else {
        	    ap.out.setText("");
        	    if (ap.stats) {ap.statsHeader();}
    	        pt = new MonitoredPrimeTriangle(rowM, ispM, reM, swapM, mem, rowTimeM, totalTimeM);
                disp = new MonitorDisplay (monitors, 1);
                updateInterval ();
                disp.start();

                if (ap.completeButton.getState()) {
                        //all at once
                        try {
                            rows = pt.triangle (nRows);
                		    if (ap.stats) {ap.printStats(monitors);}
                		    else {ap.printRagged (rows);}
                		}
                		catch (NoSolution e) {ap.out.setText(e.toString());}
                	} else if (ap.oneButton.getState()) {
                	    //one row period
                		try {
                            int[] row = pt.row (nRows);
                		    if (ap.stats) {ap.printStats(monitors);}
                		    else {ap.printRow (row);}
                		}
                		catch (NoSolution e) {ap.out.setText(e.toString());}
                }

            	if (ap.stepButton.getState()) {stepByStep();}
            }
        }
        finally {
        	ap.goOnButton.hide();
        	ap.keepGoingButton.hide();
            ap.stopButton.hide();
            ap.goButton.show();
            if (disp != null) {
                disp.stop();
                disp = null;
             }
             ap.running = false;
        }
    }

    public void goAway () {
        //die off gracefully, killing the monitor process (since Daemon doesn't seem to work)
    	ap.goOnButton.hide();
    	ap.keepGoingButton.hide();
        ap.stopButton.hide();
        ap.goButton.show();
        if (disp != null) {
            disp.stop();
            disp = null;
        }
        this.stop();
        ap.running = false;
    }

    private void stepByStep() {
        //do one row at a time, possibly pausing between each
	    keepGoing = true;
	    currentRow = new int[1];
	    currentRow[0] = 1;
	    pt.resetMonitors();
	    if (ap.stats) {ap.printStats(monitors);}
        else {ap.printRow(currentRow);}
	    ap.goOnButton.show();
	    ap.keepGoingButton.show();
	    while (true) {
            int r;
            ap.goOnButton.hide();
            ap.keepGoingButton.hide();
    	    try {currentRow = pt.nextRow(currentRow);}
        	catch (NoSolution e) {
        	    ap.out.setText(e.toString());
        	    break;
        	}
        	if (ap.verify && !pt.verifyRow(currentRow)) {
        	    ap.out.setText("Row " + currentRow.length + " didn't come out right!!!!");
        	    return;
        	}
	        if (ap.stats) {ap.printStats(monitors);}
            else {ap.printRow(currentRow);}

            try {r = Integer.parseInt(ap.rowField.getText());}
             catch (NumberFormatException e) {r = 0;}
            if (keepGoing && currentRow.length >= r) {keepGoing = false;}
            if (!keepGoing) {
                totalTimeM.pause();
	            ap.keepGoingButton.show();
                ap.goOnButton.show();
                this.suspend();
                totalTimeM.resume();
            }
        }
    }

    void updateInterval () {
        //the user has changed the update interval--go get it
        long i;
        try {i = Long.parseLong(ap.intervalField.getText());}
         catch (NumberFormatException e) {i = 1;}
        i = i * 100;
        disp.setInterval (i);
    }

}