--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/javauis/mmapi_qt/baseline/javasrc/com/nokia/microedition/media/tone/BlockEndEvent.java	Fri May 14 15:47:24 2010 +0300
@@ -0,0 +1,108 @@
+/*
+* 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:  Event processor class for tone sequence BLOCK_END events
+*
+*/
+
+
+package com.nokia.microedition.media.tone;
+
+import javax.microedition.media.control.ToneControl;
+
+/**
+ * Event processor class for tone sequence BLOCK_END events
+ */
+public class BlockEndEvent extends Event
+{
+    BlockEndEvent(byte[] aSequence, MidiSequence aMidiSequence)
+    {
+        super(aSequence, aMidiSequence);
+    }
+
+    public int advance(int aPosition)
+    throws MidiSequenceException, IllegalArgumentException
+    {
+        int retVal = doValidate(aPosition);
+        if (retVal == 0)
+        {
+            return 0;
+        }
+        // if stack is already empty, we cannot revert back. Thus
+        // this BLOCK_END must be invalid
+        if (iReturnPositionStack.empty())
+        {
+            throw new IllegalArgumentException("Illegal BLOCK_END");
+        }
+        // If valid, go back to last position before entering block
+        int lastPos = ((Integer)iReturnPositionStack.pop()).intValue();
+        retVal = lastPos - aPosition;
+        return retVal;
+    }
+
+    /**
+     * Child class defined functionality for validate
+     * @return new position offset related to aPosition in tone sequence
+     * array. Must be positive.
+     */
+    protected int doValidate(int aPosition)
+    throws IllegalArgumentException
+    {
+        int type = iSequence[ aPosition ];
+        int data = iSequence[ aPosition + 1 ];
+        int retVal = 0;
+
+        if (type == ToneControl.BLOCK_END)
+        {
+            leaveBlock(data);   // fails if block number is incorrect
+            retVal = EVENT_SIZE;
+        }
+        return retVal;
+    }
+
+    /**
+     * Child class defined functionality for checkEventAtNextPosition
+     * @param aPosition position in tone sequence array where to check
+     */
+    protected void checkEventAtNextPosition(int aPosition)
+    throws IllegalArgumentException
+    {
+        // After this event there can be:
+        // Tone, BlockStart, PlayBlock, Volume, Repeat
+
+        int type = 0;
+        try
+        {
+            type = iSequence[ aPosition ];
+        }
+        catch (ArrayIndexOutOfBoundsException aioobe)
+        {
+            throw new IllegalArgumentException(
+                "Validation failed, invalid position found in sequence");
+        }
+
+        if (type >= ToneControl.SILENCE ||
+                type == ToneControl.BLOCK_START ||
+                type == ToneControl.PLAY_BLOCK ||
+                type == ToneControl.SET_VOLUME ||
+                type == ToneControl.REPEAT)
+        {
+            return;
+        }
+
+        throw new IllegalArgumentException(
+            "Illegal event found; sequence is corrupted");
+    }
+
+} // end of class
+