X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fjavascript%2FJSFunctionExec.java;h=93b35e54eacef6680350619f9ff31fdb0bfd2b09;hb=a45774ee31d9f35d4eff46d54d7deab719afb092;hp=47e4538dbce76d35f77cf75840a32a9c9bf08c39;hpb=52e125bdf62f520d88a7aff8e6d9afe007dee15c;p=jalview.git
diff --git a/src/jalview/javascript/JSFunctionExec.java b/src/jalview/javascript/JSFunctionExec.java
index 47e4538..93b35e5 100644
--- a/src/jalview/javascript/JSFunctionExec.java
+++ b/src/jalview/javascript/JSFunctionExec.java
@@ -1,233 +1,273 @@
-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 JSFunctionExec(JalviewLite applet)
- {
- jvlite = applet;
- }
-
- private static Vector jsExecQueue;
-
- private static Thread executor = null;
-
- public static void stopQueue()
- {
- if (jsExecQueue != null)
- {
- synchronized (jsExecQueue)
- {
- Vector q = jsExecQueue;
- q.removeAllElements();
- jsExecQueue = null;
- executor.notify();
- }
- executor = null;
- }
- }
-
- public void run()
- {
- while (jsExecQueue != null)
- {
- if (jsExecQueue.size() > 0)
- {
- Runnable r = (Runnable) jsExecQueue.elementAt(0);
- jsExecQueue.removeElementAt(0);
- try
- {
- r.run();
- } catch (Exception ex)
- {
- ex.printStackTrace();
- } catch (Error ex)
- {
- ex.printStackTrace();
- }
- }
- else
- {
- try
- {
- synchronized (jsExecQueue)
- {
- jsExecQueue.wait(1000);
- }
- } catch (Exception ex)
- {
- }
- ;
- }
- }
-
- }
-
- /**
- * execute a javascript callback asynchronously
- *
- * @param _listener
- * @param objects
- * @throws Exception
- */
- public void executeJavascriptFunction(final String _listener,
- final Object[] objects) throws Exception
- {
- executeJavascriptFunction(false, _listener, objects);
- }
-
- /**
- * execute a javascript callback synchronously or asynchronously
- *
- * @param async
- * - true to execute asynchronously (do this for gui events)
- * @param _listener
- * - javascript function
- * @param objects
- * - arguments
- * @throws Exception
- * - only if call is synchronous
- */
- 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)
- {
- System.arraycopy(arguments, 0, objects, 0, arguments.length);
- }
- final Exception[] jsex = new Exception[1];
- Runnable exec = new Runnable()
- {
- public void run()
- {
- try
- {
- JSObject scriptObject = null;
- try
- {
- 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)
- {
- // squash any malformedURLExceptions thrown by windows/safari
- if (!(jex instanceof java.net.MalformedURLException))
- {
- if (jvlite.debug)
- {
- System.err.println(jex);
- }
- if (jex instanceof netscape.javascript.JSException)
- {
- jsex[0] = (netscape.javascript.JSException) jex;
- if (jvlite.debug)
- {
- System.err.println("Falling back to javascript: url call");
- }
- StringBuffer sb = new StringBuffer("javascript:" + _listener
- + "(");
- for (int i = 0; objects != null && i < objects.length; i++)
- {
- if (i > 0)
- {
- sb.append(",");
- }
- sb.append("\"");
- // strip out nulls and complex objects that we can't pass this
- // way.
- if (objects[i] != null
- && !(objects[i].getClass().getName()
- .indexOf("jalview") == 0))
- {
- sb.append(objects[i].toString());
- }
- sb.append("\"");
- }
- sb.append(")");
- if (jvlite.debug)
- {
- System.err.println(sb.toString());
- }
- // alternate
- URL url = null;
- try
- {
- url = new URL(sb.toString());
- jvlite.getAppletContext().showDocument(url);
- jex = null;
- } catch (Exception uex)
- {
- jex = uex;
- }
- }
- if (jex != null)
- {
- if (async)
- {
- jex.printStackTrace();
- }
- else
- {
- jsex[0] = jex;
- }
- }
- ;
- }
-
- }
- }
- };
- if (async)
- {
- if (JSFunctionExec.executor == null)
- {
- JSFunctionExec.jsExecQueue = new Vector();
- JSFunctionExec.executor = new Thread(new JSFunctionExec(jvlite));
- executor.start();
- }
- synchronized (jsExecQueue)
- {
- jsExecQueue.addElement(exec);
- jsExecQueue.notify();
- }
- }
- else
- {
- exec.run();
- if (jsex[0] != null)
- {
- throw (jsex[0]);
- }
- }
- }
-
-}
+/*******************************************************************************
+ * Jalview - A Sequence Alignment Editor and Viewer (Version 2.7)
+ * Copyright (C) 2011 J Procter, AM Waterhouse, G Barton, M Clamp, S Searle
+ *
+ * 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 .
+ *******************************************************************************/
+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
+{
+ 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 Vector jsExecQueue;
+
+ private Thread executor = null;
+
+ public void stopQueue()
+ {
+ if (jsExecQueue != null)
+ {
+ Vector 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()
+ {
+ while (jsExecQueue != null)
+ {
+ if (jsExecQueue.size() > 0)
+ {
+ Runnable r = (Runnable) jsExecQueue.elementAt(0);
+ jsExecQueue.removeElementAt(0);
+ try
+ {
+ r.run();
+ } catch (Exception ex)
+ {
+ ex.printStackTrace();
+ } catch (Error ex)
+ {
+ ex.printStackTrace();
+ }
+ }
+ else
+ {
+ try
+ {
+ synchronized (jsExecQueue)
+ {
+ jsExecQueue.wait(1000);
+ }
+ } catch (Exception ex)
+ {
+ }
+ ;
+ }
+ }
+
+ }
+
+ /**
+ * execute a javascript callback synchronously
+ *
+ * @param _listener
+ * @param objects
+ * @throws Exception
+ */
+ public void executeJavascriptFunction(final String _listener,
+ final Object[] objects) throws Exception
+ {
+ executeJavascriptFunction(false, _listener, objects);
+ }
+
+ /**
+ * execute a javascript callback synchronously or asynchronously
+ *
+ * @param async
+ * - true to execute asynchronously (do this for gui events)
+ * @param _listener
+ * - javascript function
+ * @param objects
+ * - arguments
+ * @throws Exception
+ * - only if call is synchronous
+ */
+ 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)
+ {
+ System.arraycopy(arguments, 0, objects, 0, arguments.length);
+ }
+ final Exception[] jsex = new Exception[1];
+ Runnable exec = new Runnable()
+ {
+ public void run()
+ {
+ try
+ {
+ JSObject scriptObject = null;
+ try
+ {
+ 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)
+ {
+ // squash any malformedURLExceptions thrown by windows/safari
+ if (!(jex instanceof java.net.MalformedURLException))
+ {
+ if (jvlite.debug)
+ {
+ System.err.println(jex);
+ }
+ if (jex instanceof netscape.javascript.JSException && jvlite.jsfallbackEnabled)
+ {
+ jsex[0] = (netscape.javascript.JSException) jex;
+ if (jvlite.debug)
+ {
+ System.err.println("Falling back to javascript: url call");
+ }
+ StringBuffer sb = new StringBuffer("javascript:" + _listener
+ + "(");
+ for (int i = 0; objects != null && i < objects.length; i++)
+ {
+ if (i > 0)
+ {
+ sb.append(",");
+ }
+ sb.append("\"");
+ // strip out nulls and complex objects that we can't pass this
+ // way.
+ if (objects[i] != null
+ && !(objects[i].getClass().getName()
+ .indexOf("jalview") == 0))
+ {
+ sb.append(objects[i].toString());
+ }
+ sb.append("\"");
+ }
+ sb.append(")");
+ if (jvlite.debug)
+ {
+ System.err.println(sb.toString());
+ }
+ // alternate
+ URL url = null;
+ try
+ {
+ url = new URL(sb.toString());
+ jvlite.getAppletContext().showDocument(url);
+ jex = null;
+ } catch (Exception uex)
+ {
+ jex = uex;
+ }
+ }
+ if (jex != null)
+ {
+ if (async)
+ {
+ jex.printStackTrace();
+ }
+ else
+ {
+ jsex[0] = jex;
+ }
+ }
+ ;
+ }
+
+ }
+ }
+ };
+ if (async)
+ {
+ if (executor == null)
+ {
+ executor = new Thread(new JSFunctionExec(jvlite));
+ executor.start();
+ }
+ synchronized (jsExecQueue)
+ {
+ jsExecQueue.addElement(exec);
+ jsExecQueue.notify();
+ }
+ }
+ else
+ {
+ // wat for executor to notify us if it's running.
+ exec.run();
+ if (jsex[0] != null)
+ {
+ throw (jsex[0]);
+ }
+ }
+ }
+
+}