--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/javauis/lcdui_akn/javalcdui/javasrc/javax/microedition/lcdui/AsyncCall.java Tue Apr 27 16:30:29 2010 +0300
@@ -0,0 +1,82 @@
+/*
+* Copyright (c) 2002 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:
+*
+*/
+
+package javax.microedition.lcdui;
+
+/**
+ * Condition variable used to track completion of asynchronous
+ * requests to the server.
+ */
+class AsyncCall
+{
+ private static final int KRequestPending = 0x80000000;
+
+ /**
+ * Limit of wait in waitForRequest().
+ * 1/25s is close to human persistance of vision, so
+ * users probably won't notice the glitch.
+ *
+ * See comment in waitForRequest().
+ */
+ private static final long TIMEOUT = 40; // == 1/25 second
+
+ private int iStatus;
+ private int iWaiting;
+
+ public AsyncCall()
+ {
+ }
+
+ public final synchronized void request()
+ {
+ iStatus = KRequestPending;
+ }
+
+ public final synchronized void complete(int aStatus)
+ {
+ iStatus = aStatus;
+
+ if (iWaiting > 0)
+ {
+ notifyAll();
+ }
+ }
+
+ public final boolean isPending()
+ {
+ return (iStatus == KRequestPending);
+ }
+
+ public final synchronized int waitForRequest()
+ {
+ while (isPending())
+ {
+ ++iWaiting;
+ try
+ {
+ wait(TIMEOUT);
+ }
+ catch (InterruptedException e)
+ {
+ e.printStackTrace();
+ }
+ --iWaiting;
+ }
+ return iStatus;
+ }
+}
+