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/*
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* Copyright (c) 1999 - 2004 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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package javax.microedition.lcdui;
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import com.nokia.mj.impl.rt.legacy.NativeError;
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import com.nokia.mj.impl.rt.support.Finalizer;
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public class Ticker
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{
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final Toolkit iToolkit;
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private int iHandle;
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private String iText;
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private Finalizer mFinalizer;
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private static final int MAX_TICKER_SIZE = 8000; // less than 8KB
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public Ticker(String aText)
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{
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if (null == aText)
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{
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throw new NullPointerException();
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}
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else if (aText.length() > MAX_TICKER_SIZE)
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{
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aText = aText.substring(0, MAX_TICKER_SIZE - 1);
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}
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mFinalizer = new Finalizer()
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{
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public void finalizeImpl()
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{
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doFinalize();
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}
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};
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Toolkit toolkit = Toolkit.getToolkit();
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synchronized (toolkit)
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{
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iToolkit = toolkit;
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iHandle = Toolkit.checkHandle(_create(toolkit.getHandle(), aText));
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iText = aText;
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}
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}
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public void setString(String aText)
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{
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if (null == aText)
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{
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throw new NullPointerException();
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}
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else if (aText.length() > MAX_TICKER_SIZE)
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{
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aText = aText.substring(0, MAX_TICKER_SIZE - 1);
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}
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synchronized (iToolkit)
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{
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if (iHandle <= 0) throw new RuntimeException("bad handle");
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NativeError.check(_setText(iHandle,iToolkit.getHandle(),aText));
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iText = aText;
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}
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}
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public String getString()
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{
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return iText;
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}
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int getHandle()
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{
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if (iHandle <= 0)
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{
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throw new RuntimeException("Ticker: bad handle " + iHandle);
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}
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return iHandle;
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}
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private void doFinalize()
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{
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if (mFinalizer != null)
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{
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registeredFinalize();
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mFinalizer = null;
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}
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}
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void registeredFinalize()
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{
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synchronized (iToolkit)
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{
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iToolkit.disposeObject(iHandle);
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iHandle=0;
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}
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}
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private native int _create(int aToolkit,String aText);
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private native int _setText(int aHandle,int aToolkit,String aText);
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} // class Ticker
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