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Node.java

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package org.gecode.explorer.cocoa;

import java.util.*;

import com.apple.cocoa.foundation.*;
import com.apple.cocoa.application.*;

import org.gecode.explorer.*;


abstract public class Node {
    
    final protected static int unit = 100;
    final protected static int halfUnit = unit / 2;
    
    final static Shape unknownShape = new Shape(new Extent(unit));
    
    final static Shape hiddenSubtreeShape =
        new Shape(new Extent(unit), new Shape(new Extent(unit + halfUnit)));
    
    protected abstract NSBezierPath getBezierPath();
    
    protected abstract NSColor getInsideColor();
    protected abstract NSColor getBorderColor();
    
    protected abstract NSPoint getTopConnector();
    protected abstract NSPoint getBotConnector();
    
    public Node() {}
    
    protected static NSColor getDefaultColor(String key) {
        NSUserDefaults defaults = NSUserDefaults.standardUserDefaults();
        String colorName = defaults.stringForKey("NodeColor" + key);
        NSColorList colorList = NSColorList.colorListNamed("Crayons");
        return colorList.colorWithKey(colorName);
    }
    
    public void draw(Object gc, int x, int y) {
        NSAffineTransform transform = new NSAffineTransform();
        transform.translateXYBy(x, y);
        transform.concat();
        getInsideColor().set();
        NSBezierPath bezierPath = getBezierPath();
        bezierPath.fill();
        bezierPath.setLineWidth(5);
        getBorderColor().set();
        bezierPath.stroke();
        transform.invert();
        transform.concat();
    }
    
    protected Shape getHiddenShape() {
        return hiddenSubtreeShape;
    }
    
    protected Shape getUnknownShape() {
        return unknownShape;
    }
    
    public boolean containsPoint(Coordinate thePoint) {
        NSPoint point = new NSPoint((float) thePoint.x(), (float) thePoint.y());
        return getBezierPath().containsPoint(point);
    }
        
    
}