platform/vcs-log/impl/src/com/intellij/vcs/log/ui/render/CommitCellRender.java

package com.intellij.vcs.log.ui.render;

import com.intellij.openapi.project.Project;
import com.intellij.vcs.log.graph.render.CommitCell;
import com.intellij.vcs.log.ui.VcsLogColorManager;
import org.jetbrains.annotations.NotNull;

import javax.swing.*;
import java.awt.*;

/**
 * @author erokhins
 */
public class CommitCellRender extends AbstractPaddingCellRender {

  public CommitCellRender(@NotNull VcsLogColorManager colorManager, Project project) {
    super(project, colorManager);
  }

  @Override
  protected int getLeftPadding(JTable table, Object value) {
    CommitCell cell = getAssertCommitCell(value);
    return calcRefsPadding(cell.getRefsToThisCommit(), (Graphics2D)table.getGraphics());
  }

  private static CommitCell getAssertCommitCell(Object value) {
    assert value instanceof CommitCell : "Value of incorrect class was supplied: " + value;
    return (CommitCell)value;
  }

  @NotNull
  @Override
  protected String getCellText(Object value) {
    if (value == null) {
      return "";
    }
    CommitCell cell = getAssertCommitCell(value);
    return cell.getText();
  }

  @Override
  protected void additionPaint(Graphics g, Object value) {
    CommitCell cell = getAssertCommitCell(value);
    Graphics2D g2 = (Graphics2D)g;
    drawRefs(g2, cell.getRefsToThisCommit(), 0);
  }

}