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1 /* |
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2 * Copyright (c) 1999 - 2004 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * |
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16 */ |
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17 |
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18 |
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19 |
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20 package javax.microedition.lcdui; |
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21 |
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22 import com.nokia.mj.impl.rt.legacy.NativeError; |
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23 import com.nokia.mj.impl.rt.support.Finalizer; |
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24 |
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25 public class Ticker |
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26 { |
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27 final Toolkit iToolkit; |
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28 private int iHandle; |
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29 private String iText; |
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30 private Finalizer mFinalizer; |
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31 |
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32 public Ticker(String aText) |
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33 { |
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34 if (null == aText) |
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35 { |
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36 throw new NullPointerException(); |
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37 } |
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38 mFinalizer = new Finalizer() |
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39 { |
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40 public void finalizeImpl() |
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41 { |
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42 doFinalize(); |
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43 } |
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44 }; |
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45 Toolkit toolkit = Toolkit.getToolkit(); |
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46 synchronized (toolkit) |
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47 { |
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48 iToolkit = toolkit; |
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49 iHandle = Toolkit.checkHandle(_create(toolkit.getHandle(), aText)); |
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50 iText = aText; |
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51 } |
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52 } |
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53 |
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54 public void setString(String aText) |
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55 { |
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56 if (null == aText) |
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57 { |
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58 throw new NullPointerException(); |
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59 } |
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60 synchronized (iToolkit) |
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61 { |
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62 if (iHandle <= 0) throw new RuntimeException("bad handle"); |
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63 NativeError.check(_setText(iHandle,iToolkit.getHandle(),aText)); |
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64 iText = aText; |
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65 } |
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66 } |
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67 |
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68 public String getString() |
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69 { |
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70 return iText; |
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71 } |
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72 |
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73 int getHandle() |
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74 { |
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75 if (iHandle <= 0) |
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76 { |
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77 throw new RuntimeException("Ticker: bad handle " + iHandle); |
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78 } |
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79 return iHandle; |
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80 } |
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81 |
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82 private void doFinalize() |
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83 { |
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84 if (mFinalizer != null) |
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85 { |
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86 registeredFinalize(); |
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87 mFinalizer = null; |
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88 } |
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89 } |
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90 |
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91 void registeredFinalize() |
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92 { |
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93 synchronized (iToolkit) |
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94 { |
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95 iToolkit.disposeObject(iHandle); |
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96 iHandle=0; |
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97 } |
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98 } |
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99 |
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100 private native int _create(int aToolkit,String aText); |
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101 private native int _setText(int aHandle,int aToolkit,String aText); |
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102 } // class Ticker |