private Spring getBestWidth(Container parent, int rows, int cols) {
	Spring x = Spring.constant(0);
	Spring width = Spring.constant(0);
	for (int c = 0; c < cols; c++) {
		
		for (int r = 0; r < rows; r++) {
			width = Spring.max(width, getConstraintsForCell(r, c, parent, cols).getWidth());
		}
	}
	return width;
}
 

private void makeProgressBars(SpringLayout l) {
    JComponent prevLabel = null, prevBar = null;
    bars = new JProgressBar[SummaryItem.STATES.length];
    
    SpringLayout ls = new SpringLayout();
    JPanel appSummary = new JPanel();
    appSummary.setBorder(BorderFactory.createTitledBorder(
        BorderFactory.createEtchedBorder(EtchedBorder.LOWERED), "App Summary"));
    add(appSummary);
    l.putConstraint(SpringLayout.WEST, appSummary, 5, SpringLayout.WEST, this);
    l.putConstraint(SpringLayout.EAST, appSummary, -5, SpringLayout.EAST, this);
    l.putConstraint(SpringLayout.NORTH, appSummary, 25, SpringLayout.NORTH, this);
    
    appSummary.setLayout(ls);
    
    
    for (int i = 0; i < SummaryItem.STATES.length; i++) {
        JLabel label = new JLabel(SummaryItem.STATES[i] + ":");
        appSummary.add(label);
        
        JProgressBar lb = new JProgressBar();
        bars[i] = lb;
        lb.setString("0");
        lb.setStringPainted(true);
        appSummary.add(lb);
    
        fixEdges(ls, label, lb, appSummary);
        if (prevLabel == null) {
            ls.putConstraint(SpringLayout.NORTH, label, 5, SpringLayout.NORTH, appSummary);
        }
        else {
            ls.putConstraint(SpringLayout.NORTH, label, 10, SpringLayout.SOUTH, prevLabel);
        }
        prevLabel = label;
        prevBar = lb;
    }
    
    JLabel hl = new JLabel("Heap:");
    memory = makeProgress(l, hl);
    
    l.putConstraint(SpringLayout.SOUTH, appSummary, -25, SpringLayout.NORTH, hl);
    l.putConstraint(SpringLayout.SOUTH, hl, -25, SpringLayout.SOUTH, this);
    
    Spring maxW = Spring.constant(0);
    
    for (int i = 0; i < SummaryItem.STATES.length; i++) {
        maxW = Spring.max(maxW, ls.getConstraints(appSummary.getComponent(i * 2)).getWidth());
    }
    
    for (int i = 0; i < SummaryItem.STATES.length; i++) {
        SpringLayout.Constraints c = ls.getConstraints(appSummary.getComponent(i * 2));
        c.setWidth(maxW);
    }
}