--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/javauis/lcdui_akn/javalcdui/inc/CMIDBuffer.h	Tue Apr 27 16:30:29 2010 +0300
@@ -0,0 +1,152 @@
+/*
+* 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:
+*
+*/
+
+#ifndef CMIDBUFFER_H
+#define CMIDBUFFER_H
+
+#include <e32def.h>
+#include <jni.h>
+#include <mevents.h>
+#include "lcdui.h"
+#include "javax_microedition_lcdui_Buffer.h"
+
+
+/**
+ * Buffer for graphics (and any other) commands.
+ *
+ */
+class CMIDBuffer : public CJavaEventSource<CMIDBuffer>
+{
+public:
+    /**
+     * Ctor
+     * @param aJni JNI env
+     * @param aPeer Java object
+     * @param aServer Event server
+     * @return Handle
+     */
+    static TInt New(JNIEnv& aJni, jobject aPeer, TJavaEventServer aServer);
+
+    /**
+     * Ctor
+     */
+    CMIDBuffer();
+
+    /**
+     * Dtor
+     */
+    virtual ~CMIDBuffer();
+
+    /**
+     * This method is called from Java threads. The Java peer class guarantees to
+     * to write aCount words into the buffer before calling this method, with a
+     * monitor lock held in java.
+     * @param aEnv JNI env
+     * @param aBuffer Buffer
+     * @param aCount Buffer size
+     */
+    void RequestProcess(JNIEnv& aEnv, jintArray aBuffer, jint aCount);
+
+private:
+    /**
+     * With help of this method the buffer is executed under lcdui event server.
+     * @param aBuffer Buffer
+     */
+#ifdef RD_JAVA_NGA_ENABLED
+    static TBool DoProcess(CMIDBuffer* aBuffer);
+#else
+    static void DoProcessL(CMIDBuffer* aBuffer);
+#endif
+
+    /**
+     * Ctor
+     * @param aJni JNI env
+     * @param aPeer Java object
+     * @param aServer Event server
+     */
+    void ConstructJniL(JNIEnv& aJni, jobject aPeer, TJavaEventServer aServer);
+
+    /**
+     * Finalizer. Must be called with the Toolkit lock held.
+     * @param aJni JNI env
+     */
+    void FinalizeJni(JNIEnv& aJni);
+
+    /**
+     * Do the buffer processing under lcdui event server.
+     */
+#ifdef RD_JAVA_NGA_ENABLED
+    TBool ProcessL();
+#else
+    void ProcessL();
+#endif
+
+    /**
+     * Do the buffer processing under lcdui event server.
+     */
+    TInt Error(TInt aError);
+
+    /**
+     * Do the buffer processing under lcdui event server.
+     */
+    void Cancel();
+
+    /**
+     * Do the buffer processing under lcdui event server.
+     */
+    void Complete();
+
+    /**
+     * Buffer size
+     * @return Buffer size
+     */
+    TInt Size() const;
+
+private:
+    enum { KTotalCycles = 65536 };
+
+    /**
+     * Processor state at start of RunL
+     */
+    enum TState
+    {
+        EComplete     = 0,
+        ENewRequest   = 1,
+        EAsyncPending = 3,
+        EDeferred     = 4,
+        EClosed       = -1,
+        ECancelled    = -2
+    };
+
+    enum { KBufferSize = javax_microedition_lcdui_Buffer_BUFFER_SIZE };
+
+private:
+    MMIDBufferProcessor*    iProcessor;
+    TMIDBufferOp            iBuffer[KBufferSize];
+    const TMIDBufferOp*     iBufferEnd;
+    const TMIDBufferOp*     iRead;
+    const TMIDBufferOp*     iReadEnd;
+    const TMIDBufferOp*     iProcEnd;
+    TInt                    iCycles;
+    TState                  iState;
+    TInt                    iError;
+#ifdef RD_JAVA_NGA_ENABLED
+    java::util::Monitor*    iMonitor;
+#endif
+};
+
+#endif // CMIDBUFFER_H