JAL-1620 version bump and release notes

[jalview.git] / src / jalview / javascript / JSFunctionExec.java

diff --git a/src/jalview/javascript/JSFunctionExec.java b/src/jalview/javascript/JSFunctionExec.java
index 9674926..5081176 100644 (file)
--- a/src/jalview/javascript/JSFunctionExec.java
+++ b/src/jalview/javascript/JSFunctionExec.java
@@ -1,35 +1,84 @@
+/*
+ * Jalview - A Sequence Alignment Editor and Viewer (Version 2.8.2b1)
+ * Copyright (C) 2014 The Jalview Authors
+ * 
+ * This file is part of Jalview.
+ * 
+ * Jalview is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License 
+ * as published by the Free Software Foundation, either version 3
+ * of the License, or (at your option) any later version.
+ *  
+ * Jalview is distributed in the hope that it will be useful, but 
+ * WITHOUT ANY WARRANTY; without even the implied warranty 
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
+ * PURPOSE.  See the GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with Jalview.  If not, see <http://www.gnu.org/licenses/>.
+ * The Jalview Authors are detailed in the 'AUTHORS' file.
+ */
 package jalview.javascript;
 
 import java.net.URL;
 import java.util.Vector;
 
-import netscape.javascript.JSException;
 import netscape.javascript.JSObject;
 import jalview.bin.JalviewLite;
 
 public class JSFunctionExec implements Runnable
 {
-  JalviewLite jvlite;
+  public JalviewLite jvlite;
 
   public JSFunctionExec(JalviewLite applet)
   {
     jvlite = applet;
+
+    jsExecQueue = jvlite.getJsExecQueue();
+    jvlite.setExecutor(this);
+  }
+
+  public void finalize()
+  {
+    jvlite = null;
+    executor = null;
+    if (jsExecQueue != null)
+    {
+      jsExecQueue.clear();
+    }
+    jsExecQueue = null;
   }
 
-  private static Vector jsExecQueue;
+  private Vector jsExecQueue;
 
-  private static Thread executor = null;
+  private Thread executor = null;
 
-  public static void stopQueue()
+  public void stopQueue()
   {
     if (jsExecQueue != null)
     {
-      Vector q = jsExecQueue;
-      jsExecQueue = null;
-      q.removeAllElements();
-      executor.notify();
-      executor = null;
+      Vector<JSFunctionExec> q = null;
+      synchronized (jsExecQueue)
+      {
+        q = jsExecQueue;
+        jsExecQueue = null;
+      }
+      if (q != null)
+      {
+        for (JSFunctionExec jx : q)
+        {
+          jx.jvlite = null;
+
+        }
+        q.removeAllElements();
+        synchronized (q)
+        {
+          q.notifyAll();
+        }
+      }
     }
+    jvlite = null;
+    executor = null;
   }
 
   public void run()
@@ -69,7 +118,7 @@ public class JSFunctionExec implements Runnable
   }
 
   /**
-   * execute a javascript callback asynchronously
+   * execute a javascript callback synchronously
    * 
    * @param _listener
    * @param objects
@@ -96,6 +145,15 @@ public class JSFunctionExec implements Runnable
   public void executeJavascriptFunction(final boolean async,
           final String _listener, Object[] arguments) throws Exception
   {
+
+    executeJavascriptFunction(async, _listener, arguments, null);
+
+  }
+
+  public void executeJavascriptFunction(final boolean async,
+          final String _listener, Object[] arguments, final String dbgMsg)
+          throws Exception
+  {
     final Object[] objects = new Object[arguments != null ? arguments.length
             : 0];
     if (arguments != null)
@@ -112,13 +170,17 @@ public class JSFunctionExec implements Runnable
           JSObject scriptObject = null;
           try
           {
-            scriptObject = JSObject.getWindow(jvlite.applet);
+            scriptObject = JSObject.getWindow(jvlite);
           } catch (Exception ex)
           {
           }
           ;
           if (scriptObject != null)
           {
+            if (jvlite.debug && dbgMsg != null)
+            {
+              System.err.println(dbgMsg);
+            }
             scriptObject.call(_listener, objects);
           }
         } catch (Exception jex)
@@ -130,7 +192,8 @@ public class JSFunctionExec implements Runnable
             {
               System.err.println(jex);
             }
-            if (jex instanceof netscape.javascript.JSException)
+            if (jex instanceof netscape.javascript.JSException
+                    && jvlite.jsfallbackEnabled)
             {
               jsex[0] = (netscape.javascript.JSException) jex;
               if (jvlite.debug)
@@ -149,7 +212,7 @@ public class JSFunctionExec implements Runnable
                 // strip out nulls and complex objects that we can't pass this
                 // way.
                 if (objects[i] != null
-                        && !(objects[i].getClass().getPackage().getName()
+                        && !(objects[i].getClass().getName()
                                 .indexOf("jalview") == 0))
                 {
                   sb.append(objects[i].toString());
@@ -181,7 +244,7 @@ public class JSFunctionExec implements Runnable
               }
               else
               {
-                jsex[0] = new Exception(jex);
+                jsex[0] = jex;
               }
             }
             ;
@@ -192,10 +255,9 @@ public class JSFunctionExec implements Runnable
     };
     if (async)
     {
-      if (JSFunctionExec.executor == null)
+      if (executor == null)
       {
-        JSFunctionExec.jsExecQueue = new Vector();
-        JSFunctionExec.executor = new Thread(new JSFunctionExec(jvlite));
+        executor = new Thread(new JSFunctionExec(jvlite));
         executor.start();
       }
       synchronized (jsExecQueue)
@@ -206,6 +268,7 @@ public class JSFunctionExec implements Runnable
     }
     else
     {
+      // wat for executor to notify us if it's running.
       exec.run();
       if (jsex[0] != null)
       {