BlockOperator.java

package com.drawbridge.vl.blocks;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.image.BufferedImage;

import com.drawbridge.jsengine.ast.Evaluator;
import com.drawbridge.utils.GraphicUtils;
import com.drawbridge.utils.Utils;
import com.drawbridge.vl.VLCanvas;
import com.drawbridge.vl.VLPanel;
import com.google.caja.lexer.FilePosition;

public class BlockOperator extends Block
{
	private static final long	serialVersionUID	= -4732877357304126964L;

	public enum SupportedOperationType
	{
		ADDITION,
		SUBTRACTION,
		MULTIPLICATION,
		DIVISION,
		MODULUS;

		public static String getString(SupportedOperationType type)
		{
			switch (type)
			{
			case ADDITION:
				return "+";
			case DIVISION:
				return "/";
			case MODULUS:
				return "%";
			case MULTIPLICATION:
				return "*";
			case SUBTRACTION:
				return "-";
			}
			Utils.out.println(BlockOperator.class, "Unknown operator type :" + type);
			return "";
		}

	}

	private SupportedOperationType	mType	= null;
	private BufferedImage			img		= null;

	public BlockOperator(FilePosition filePosition, Evaluator eval, SupportedOperationType type) {
		super(filePosition, eval, VLCanvas.LINE_HEIGHT - 10, Color.white, new BasicStroke(), SupportedOperationType.getString(type));
		mType = type;
		setImmutableProperties();
	}

	public BlockOperator(BlockOperator block) {
		super(block);
		mType = block.mType;
		setImmutableProperties();
	}

	private void setImmutableProperties()
	{
		this.setPreferredSize(new Dimension(40, 40));
		this.setSize(getPreferredSize());
		this.remove(mRoundedText);
		updateImageIcon();

		this.setRoundSize(10);

		addMouseMotionListener(new MouseAdapter()
		{
			@Override
			public void mouseMoved(MouseEvent me)
			{
				VLPanel.getInstance().mCanvas.displaySelectorOp(BlockOperator.this, BlockOperator.this.getLocation());
			}
		});
	}

	public void setType(final SupportedOperationType newType)
	{
		mType = newType;
		updateImageIcon();
		VLCanvas canvas = VLPanel.getInstance().mCanvas;
		if (canvas != null)
		{
			canvas.updateGrid();
			canvas.validateGridLayout();
		}
	}

	@Override
	public void paintComponent(Graphics g)
	{
		super.paintComponent(g);
		g.drawImage(img, 5, 5, getWidth() - 10, getHeight() - 10, null);
	}

	private void updateImageIcon()
	{

		switch (mType)
		{
		case ADDITION:
			img = GraphicUtils.loadImageFromResource("/Assets/operator-plus.png");
			break;
		case DIVISION:
			img = GraphicUtils.loadImageFromResource("/Assets/operator-div.png");
			break;
		case MODULUS:
			img = GraphicUtils.loadImageFromResource("/Assets/operator-mod.png");
			break;
		case MULTIPLICATION:
			img = GraphicUtils.loadImageFromResource("/Assets/operator-mult.png");
			break;
		case SUBTRACTION:
			img = GraphicUtils.loadImageFromResource("/Assets/operator-minus.png");
			break;
		default:
			break;
		}

	}

	@Override
	public String generateCode()
	{
		return " " + SupportedOperationType.getString(mType) + " ";
	}

}