//
// (C) COPYRIGHT International Business Machines Corp. 1997
// All Rights Reserved
// Licensed Materials - Property of IBM
//
// US Government Users Restricted Rights - Use, duplication or
// disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
//


/*
 * $Header: /home/gda/dxcvs/dx/src/ui++/java/dx/net/ScalarNode.java,v 1.1.1.1 1999/03/24 15:17:31 gda Exp $
 */

package dx.net;
import java.util.*;
import dx.runtime.*;

public class ScalarNode extends dx.net.InteractorNode {

    private Vector values;
    private static final int ID_PARAM_NUM          = 1; // Id used for UI messages
    private static final int DATA_PARAM_NUM        = 2; // The input object
    private static final int CVAL_PARAM_NUM        = 3; // Current Value
    private static final int REFRESH_PARAM_NUM     = 4; // Does the module refresh
    private static final int MIN_PARAM_NUM         = 5; // The current minimum
    private static final int MAX_PARAM_NUM         = 6; // The current maximum
    private static final int INCR_PARAM_NUM        = 7; // The current increment
    private static final int INCRMETHOD_PARAM_NUM  = 8; // Method used to interpret incr.
    private static final int DECIMALS_PARAM_NUM    = 9; // Number of decimals to display
    private static final int DFLTVAL_PARAM_NUM     = 10; // The default output indicator
    private static final int LABEL_PARAM_NUM       = 11; // The label


    public ScalarNode(Network net, String name, int instance, String notation) {
	super(net, name, instance, notation);
	this.values = new Vector(2);
    }

    public synchronized void setValues (int i, int min, int max, int step, int current) {
	NumericValues nv = new NumericValues (i, min, max, step, current);
	this.values.addElement((Object)nv);
    }

    public synchronized void setValues (int i, double min, double max, double step, 
	int places, double current) {
	NumericValues nv = new NumericValues (i, min, max, step, places, current);
	this.values.addElement((Object)nv);
    }

    public void installValues (Interactor i) {
	super.installValues(i);
	if (this.values == null) return ;
 	Enumeration enum = this.values.elements();
	while (enum.hasMoreElements()) {
	    NumericValues nv = (NumericValues)enum.nextElement();

	    StepperInteractor si = (StepperInteractor)i;
	    if (nv.places == 0) {
		si.setValues(nv.which, (int)nv.min, (int)nv.max, 
		    (int)nv.step, (int)nv.current);
	    } else {
		si.setValues(nv.which, nv.min, nv.max, nv.step, nv.places, nv.current);
	    }
	}
    }

    //
    // 0:  Scalar_%d: min=...
    // min=%g max=%g delta=%g value=%g decimals=%d
    // min=[%g %g %g] max=[%g %g %g] delta=[%g %g %g] value=[%g %g %g] decimals=[%g %g %g]
    //
    public boolean handleAssignment(String lhs, String rhs) {
	boolean handled = false;
	if (lhs.equals("min")) {
	    handled = true;
	} else if (lhs.equals("max")) {
	    handled = true;
	} else if (lhs.equals("delta")) {
	    handled = true;
	} else if (lhs.equals("value")) {
	    handled = true;
	} else if (lhs.equals("decimals")) {
	    handled = true;
	}

	if (handled) {
	    try {
		int which = 1;
		StringTokenizer stok = new StringTokenizer(rhs, "[] ");
		while (stok.hasMoreTokens()) {
		    String tok = stok.nextToken();
		    NumericValues nv = (NumericValues)this.values.elementAt(which-1);
		    Double dv = new Double(tok);
		    if (lhs.equals("min")) {
			nv.min = (nv.places == 0? dv.intValue() : dv.doubleValue());
		    } else if (lhs.equals("max")) {
			nv.max = (nv.places == 0? dv.intValue() : dv.doubleValue());
		    } else if (lhs.equals("delta")) {
			nv.step = (nv.places == 0? dv.intValue() : dv.doubleValue());
		    } else if (lhs.equals("value")) {
			nv.current = (nv.places == 0? dv.intValue() : dv.doubleValue());
		    } else if (lhs.equals("decimals")) {
			nv.places = (nv.places == 0? 0 : dv.intValue());
		    } else break;
		    which++;
		}
	    } catch (NullPointerException npe) {
		System.out.println ("ScalarNode.handleAssignment: " + lhs+"="+rhs);
	    } catch (NumberFormatException nfe) {
		System.out.println ("ScalarNode.handleAssignment: " + lhs+"="+rhs);
	    }
	}

	if (handled == false)
	    return super.handleAssignment(lhs, rhs);
	return true;
    }

    protected void setOutputValue (int param, String value) {
	if (param != 1) {
	    super.setOutputValue(param, value);
	    return ;
	}

        Network net = this.getNetwork();
	DXLinkApplication dxa = (DXLinkApplication)net.getApplet();
	boolean resume = dxa.getEocMode();
	if (resume) dxa.setEocMode(false);

	super.setOutputValue(param, value);
	this.setInputValue (ScalarNode.CVAL_PARAM_NUM, value);

	if (resume) dxa.setEocMode(true);
    }

    public void setInputValue (int param, String value) {
	super.setInputValue(param, value);
	if (param != ScalarNode.CVAL_PARAM_NUM) return ;

	//
	// Insert the current value into the set of NumericValues for the Node
	// so that future data-driven messages don't clobber current value
	// in the interactor.
	//
	try {
	    int which = 1;
	    StringTokenizer stok = new StringTokenizer(value, "[] ");
	    while (stok.hasMoreTokens()) {
		String tok = stok.nextToken();
		NumericValues nv = (NumericValues)this.values.elementAt(which-1);
		Double dv = new Double(tok);
		nv.current = (nv.places == 0? dv.intValue() : dv.doubleValue());
	    }
	} catch (NumberFormatException nfe) {
	    nfe.printStackTrace();
	} catch (NullPointerException npe) {
	    npe.printStackTrace();
	}
    }

}; // end ScalarNode