--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/javauis/m2g_qt/javasrc/com/nokia/microedition/m2g/M2GObject.java	Fri Oct 15 12:29:39 2010 +0300
@@ -0,0 +1,228 @@
+/*
+* Copyright (c) 2005 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 com.nokia.microedition.m2g;
+
+import java.io.IOException;
+
+import com.nokia.microedition.m2g.NativeError;
+import com.nokia.mj.impl.rt.support.Finalizer;
+import com.nokia.mj.impl.utils.Logger;
+
+
+/**
+ * Base class
+ */
+abstract class M2GObject 
+{
+    //--------------------------------------------------
+    // STATIC CONSTANTS
+    //--------------------------------------------------
+    public static final int INVALID_NATIVE_HANDLE = 0;
+   // static final String ESWT_PACKAGE              =   "org.eclipse.swt.widgets.Display" ;
+    //--------------------------------------------------
+    // VARIABLES
+    //--------------------------------------------------
+    int iNativeHandle;
+    M2GManager iManager;
+    private Finalizer mFinalizer;
+
+    //--------------------------------------------------
+    // METHODS
+    //--------------------------------------------------
+    /**
+     * Constructor.
+     */
+    M2GObject()
+    {
+        this(INVALID_NATIVE_HANDLE);
+        
+    }
+
+    /**
+     * Constructor.
+     * @param a native handle
+     */
+    M2GObject(int aHandle)
+    {
+				
+        iNativeHandle = aHandle;
+        
+        iManager = M2GManager.getInstance();
+        
+    }
+
+    /**
+     * Checks handle validity.
+     * @return true if valid
+     */
+    boolean doCheckValidity() throws IOException
+    {
+        return isHandleValid();
+    }
+
+    /**
+     * Cleanup operations.
+     */
+    abstract void doCleanup();
+
+    /**
+     * Construct operations. Registration for finalization is done here.
+     */
+    void doConstruct()
+    {
+        Logger.LOG(Logger.EJavaUI, Logger.EInfo,
+                   "doConstruct(), register for finalization: "
+                   + this.getClass().getName());
+        M2GManager.heuristicGC();
+        mFinalizer = new Finalizer()
+        {
+            public void finalizeImpl()
+            {
+                doFinalize();
+            }
+        };
+    }
+
+    /**
+     * Create destroyer.
+     */
+    void createDestroyer()
+    {
+        Logger.LOG(Logger.EJavaUI, Logger.EInfo,
+                   "createDestroyer(): " + this.getClass().getName());
+        
+    }
+
+    /**
+     * Gets native handle
+     * @return native handle
+     */
+    int getHandle()
+    {
+        return iNativeHandle;
+    }
+
+    /**
+     * Gets native proxy handle
+     * @return native handle
+     */
+    int getNativeSVGProxyHandle()
+    {
+        return iManager.getSVGProxyHandle();
+    }
+
+    /**
+     * Checks if native handle is valid.
+     */
+    boolean isHandleValid()
+    {
+        M2GObject.checkNativeError(iNativeHandle);
+        return M2GObject.checkHandle(iNativeHandle);
+    }
+
+    /**
+     * Register an object
+     * @param aObject Object
+     */
+    void register(M2GObject aObject)
+    {
+        iManager.register(aObject);
+    }
+
+    /**
+     * @see ObjectExtensions#registerForFinalization()
+     */
+    private void doFinalize()
+    {
+        if (mFinalizer != null)
+        {
+            registeredFinalize();
+            mFinalizer = null;
+        }
+    }
+
+    synchronized final void registeredFinalize()
+    {
+        Logger.LOG(Logger.EJavaUI, Logger.EInfo,
+                   "registeredFinalize() begin - doCleanup() is called");
+        doCleanup();
+        Logger.LOG(Logger.EJavaUI, Logger.EInfo, "registeredFinalize() end");
+    }
+
+    /**
+     * This method is called in Toolkit's destroyNotify call.
+     * This will release convenient native resources. All native resource
+     * will be deleted in registeredFinalize() method.
+     */
+    synchronized final void release()
+    {
+        Logger.LOG(Logger.EJavaUI, Logger.EInfo, "release()");
+    }
+
+    /**
+     * Initializes native handles.
+     */
+    void resetHandles()
+    {
+        iNativeHandle = INVALID_NATIVE_HANDLE;
+    }
+
+    /**
+     * Sets a native handle.
+     */
+    void setHandle(int aNativeHandle)
+    {
+        iNativeHandle = aNativeHandle;
+    }
+
+    /**
+     * Unregister an object
+     * @param aHandle Object's native handle
+     */
+    void unregister(Integer aHandle)
+    {
+        iManager.unregister(aHandle);
+    }
+
+    //--------------------------------------------------
+    // STATIC METHODS
+    //--------------------------------------------------
+    /**
+     * Checks that the handle is valid.
+     * @param a native handle
+     * @return true if handle is valid.
+     */
+    static boolean checkHandle(int aHandle)
+    {
+        return (aHandle > INVALID_NATIVE_HANDLE ? true : false);
+    }
+
+    /**
+     * Checks for basic native error codes that maps to
+     * standard Java exceptions and throws the exception if the error
+     * code matches. Otherwise throws basic Error class.
+     * @param aErrorCode Error code
+     * @return Value passed in is returned if not an error
+     * @throws Error if error
+     */
+    static int checkNativeError(int aErrorCode)
+    {
+        return NativeError.check(aErrorCode);
+    }
+}
+