application/org.openjdk.jmc.ui/src/main/java/org/openjdk/jmc/ui/charts/RendererToolkit.java

*** 100,112 ****
  
          }
  
          private static class CompositeRenderer implements IXDataRenderer {
  
!                 private static final Color TOO_MUCH_CONTENT_BG = new Color(240, 240, 240, 190);
                  private static final String TOO_MUCH_CONTENT_MSG = Messages
                                  .getString(Messages.RendererToolkit_TOO_MUCH_CONTENT);
                  private final List<IXDataRenderer> children;
                  private final List<Double> weights;
                  private final String text;
                  private final double totalWeight;
  
--- 100,114 ----
  
          }
  
          private static class CompositeRenderer implements IXDataRenderer {
  
!                 private static final Color MISMATCH_CONTENT_BG = new Color(240, 240, 240, 190);
                  private static final String TOO_MUCH_CONTENT_MSG = Messages
                                  .getString(Messages.RendererToolkit_TOO_MUCH_CONTENT);
+                 private static final String NO_CONTENT_MSG = Messages
+                                 .getString(Messages.RendererToolkit_NO_CONTENT);
                  private final List<IXDataRenderer> children;
                  private final List<Double> weights;
                  private final String text;
                  private final double totalWeight;
  
*** 141,162 ****
                                          context.translate(0, rowHeight);
                                  }
                          }
                          context.setTransform(oldTransform);
                          if (result.size() != children.size()) {
                                  result = Collections.emptyList();
!                                 context.setPaint(TOO_MUCH_CONTENT_BG);
                                  context.fillRect(0, 0, xRange.getPixelExtent(), height);
                                  // FIXME: Draw something nice.
                                  Font orgFont = context.getFont();
                                  Font italicFont = orgFont.deriveFont(Font.ITALIC);
                                  FontMetrics fm = context.getFontMetrics(italicFont);
!                                 int msgWidth = fm.stringWidth(TOO_MUCH_CONTENT_MSG);
                                  if (height > fm.getHeight() && xRange.getPixelExtent() > msgWidth) {
                                          context.setFont(italicFont);
                                          context.setPaint(Color.BLACK);
!                                         context.drawString(TOO_MUCH_CONTENT_MSG, (xRange.getPixelExtent() - msgWidth) / 2,
                                                          (height - fm.getHeight()) / 2 + fm.getAscent());
                                          context.setFont(orgFont);
                                  }
                          }
  
--- 143,165 ----
                                          context.translate(0, rowHeight);
                                  }
                          }
                          context.setTransform(oldTransform);
                          if (result.size() != children.size()) {
+                                 String displayMessage = result.size() == 0 ? NO_CONTENT_MSG : TOO_MUCH_CONTENT_MSG;
                                  result = Collections.emptyList();
!                                 context.setPaint(MISMATCH_CONTENT_BG);
                                  context.fillRect(0, 0, xRange.getPixelExtent(), height);
                                  // FIXME: Draw something nice.
                                  Font orgFont = context.getFont();
                                  Font italicFont = orgFont.deriveFont(Font.ITALIC);
                                  FontMetrics fm = context.getFontMetrics(italicFont);
!                                 int msgWidth = fm.stringWidth(displayMessage);
                                  if (height > fm.getHeight() && xRange.getPixelExtent() > msgWidth) {
                                          context.setFont(italicFont);
                                          context.setPaint(Color.BLACK);
!                                         context.drawString(displayMessage, (xRange.getPixelExtent() - msgWidth) / 2,
                                                          (height - fm.getHeight()) / 2 + fm.getAscent());
                                          context.setFont(orgFont);
                                  }
                          }