JAL-2216 explicitly null AnnotationPanel and AnnotationRenderer fields

[jalview.git] / src / jalview / gui / AnnotationPanel.java

diff --git a/src/jalview/gui/AnnotationPanel.java b/src/jalview/gui/AnnotationPanel.java
index 7450555..0b2f6cc 100755 (executable)
--- a/src/jalview/gui/AnnotationPanel.java
+++ b/src/jalview/gui/AnnotationPanel.java
@@ -123,8 +123,6 @@ public class AnnotationPanel extends JPanel implements AwtRenderPanelI,
 
   boolean mouseDragging = false;
 
-  boolean MAC = false;
-
   // for editing cursor
   int cursorX = 0;
 
@@ -142,9 +140,6 @@ public class AnnotationPanel extends JPanel implements AwtRenderPanelI,
    */
   public AnnotationPanel(AlignmentPanel ap)
   {
-
-    MAC = jalview.util.Platform.isAMac();
-
     ToolTipManager.sharedInstance().registerComponent(this);
     ToolTipManager.sharedInstance().setInitialDelay(0);
     ToolTipManager.sharedInstance().setDismissDelay(10000);
@@ -1139,4 +1134,25 @@ public class AnnotationPanel extends JPanel implements AwtRenderPanelI,
       return null;
     }
   }
+
+  /**
+   * Try to ensure any references held are nulled
+   */
+  public void dispose()
+  {
+    av = null;
+    ap = null;
+    image = null;
+    fadedImage = null;
+    gg = null;
+    _mwl = null;
+
+    /*
+     * I created the renderer so I will dispose of it
+     */
+    if (renderer != null)
+    {
+      renderer.dispose();
+    }
+  }
 }