AbstractBlock.java

package jetbrains.mps.ide.dataFlow.presentation;

/*Generated by MPS */

import org.apache.log4j.Logger;
import org.apache.log4j.LogManager;
import org.jetbrains.mps.openapi.model.SNodeReference;
import java.util.Set;
import java.util.HashSet;
import org.jetbrains.mps.openapi.persistence.PersistenceFacade;
import org.apache.log4j.Level;
import java.awt.event.MouseEvent;
import java.awt.Component;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;

public abstract class AbstractBlock implements IBlock {
  private static final Logger LOG = LogManager.getLogger(AbstractBlock.class);
  protected int myX;
  protected int myY;
  protected int myWidth;
  protected int myHeight;
  protected SNodeReference mySourceNode;
  private SNodeReference myRuleNodeReference;
  private int myPaddingX = 0;
  private int myPaddingY = 0;
  private int myCharHeight = 0;
  private int myStringWidth = 0;
  private String myCaption;
  private Set<IBlockListener> myBlockListeners = new HashSet<IBlockListener>();
  private Set<IBlock> mySucc;
  public AbstractBlock(int x, int y, int width, int height, SNodeReference sourceNode, String caption, String ruleNodeReference) {
    this.myX = x;
    this.myY = y;
    this.myWidth = width;
    this.myHeight = height;
    this.mySourceNode = sourceNode;
    this.myCaption = caption;
    if (ruleNodeReference != null) {
      try {
        this.myRuleNodeReference = PersistenceFacade.getInstance().createNodeReference(ruleNodeReference);
      } catch (IllegalArgumentException e) {
        if (LOG.isEnabledFor(Level.ERROR)) {
          LOG.error("Can't find node: " + ruleNodeReference, e);
        }
        this.myRuleNodeReference = null;
      }
    }
  }
  @Override
  public SNodeReference getSourceNode() {
    return this.mySourceNode;
  }

  public SNodeReference getRuleNodeReference() {
    return this.myRuleNodeReference;
  }

  @Override
  public int getX() {
    return this.myX;
  }
  @Override
  public int getY() {
    return this.myY;
  }
  @Override
  public int getWidth() {
    return this.myWidth;
  }
  @Override
  public int getHeight() {
    return this.myHeight;
  }
  @Override
  public void addBlockListener(IBlockListener listener) {
    this.myBlockListeners.add(listener);
  }
  @Override
  public void removeBlockListener(IBlockListener listener) {
    this.myBlockListeners.remove(listener);
  }
  @Override
  public void setSucc(Set<IBlock> succ) {
    this.mySucc = succ;
  }
  @Override
  public Set<IBlock> succ() {
    return this.mySucc;
  }
  @Override
  public boolean processMousePressed(MouseEvent mEvent) {
    int x = mEvent.getX();
    int y = mEvent.getY();
    if (x >= this.myX && x <= this.myX + this.myWidth && y > this.myY && y <= this.myY + this.myHeight) {
      for (IBlockListener listener : this.myBlockListeners) {
        listener.mousePressed(mEvent, AbstractBlock.this);
      }
      return true;
    } else {
      return false;
    }
  }
  @Override
  public void relayout(Component c) {
    Font font = c.getFont();
    FontMetrics metrics = c.getFontMetrics(font);
    this.myStringWidth = metrics.stringWidth(this.myCaption);
    this.myCharHeight = metrics.getHeight();
    this.myWidth = this.myStringWidth + 2 * AbstractBlock.this.getPaddingX(metrics);
    this.myHeight = this.myCharHeight + 2 * AbstractBlock.this.getPaddingY(metrics);
  }
  private int getPaddingX(FontMetrics metrics) {
    return metrics.getHeight() / 2;
  }
  private int getPaddingY(FontMetrics metrics) {
    return metrics.getHeight() / 3;
  }
  @Override
  public void setWidth(int width) {
    this.myWidth = width;
    this.myPaddingX = (this.myWidth - this.myStringWidth) / 2;
  }
  @Override
  public void setHeight(int height) {
    this.myHeight = height;
    this.myPaddingY = (this.myHeight - this.myCharHeight) / 2;
  }
  @Override
  public void setX(int x) {
    this.myX = x;
  }
  @Override
  public void setY(int y) {
    this.myY = y;
  }
  protected void paintCaption(Graphics g) {
    g.drawString(this.myCaption, this.myX + this.myPaddingX, this.myY + this.myPaddingY + this.myCharHeight);
  }
  protected abstract void paintBlock(Graphics g);
  @Override
  public void paint(Graphics g) {
    AbstractBlock.this.paintBlock(g);
    AbstractBlock.this.paintCaption(g);
  }
}