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8 <h1>examples/Base/IPC/Async/AcceptInput1/AcceptInput1.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright (c) 2000-2009 Nokia Corporation and/or its subsidiary(-ies).</span> |
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9 <a name="l00002"></a>00002 <span class="comment">// All rights reserved.</span> |
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10 <a name="l00003"></a>00003 <span class="comment">// This component and the accompanying materials are made available</span> |
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11 <a name="l00004"></a>00004 <span class="comment">// under the terms of "Eclipse Public License v1.0"</span> |
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12 <a name="l00005"></a>00005 <span class="comment">// which accompanies this distribution, and is available</span> |
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13 <a name="l00006"></a>00006 <span class="comment">// at the URL "http://www.eclipse.org/legal/epl-v10.html".</span> |
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14 <a name="l00007"></a>00007 <span class="comment">//</span> |
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15 <a name="l00008"></a>00008 <span class="comment">// Initial Contributors:</span> |
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16 <a name="l00009"></a>00009 <span class="comment">// Nokia Corporation - initial contribution.</span> |
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17 <a name="l00010"></a>00010 <span class="comment">//</span> |
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18 <a name="l00011"></a>00011 <span class="comment">// Contributors:</span> |
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19 <a name="l00012"></a>00012 <span class="comment">//</span> |
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20 <a name="l00013"></a>00013 <span class="comment">// Description:</span> |
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21 <a name="l00014"></a>00014 <span class="comment">// Asynchronous keyboard processing with messenger program.</span> |
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22 <a name="l00015"></a>00015 <span class="comment">// A single CKeyMessengerProcessor active object (derived from</span> |
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23 <a name="l00016"></a>00016 <span class="comment">// class CActiveConsole) which accepts input from keyboard, but does not</span> |
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24 <a name="l00017"></a>00017 <span class="comment">// print it.</span> |
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25 <a name="l00018"></a>00018 <span class="comment">// This object contains a CMessageTimer object which it activates if the</span> |
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26 <a name="l00019"></a>00019 <span class="comment">// user inputs the character "m" and cancelled if the user inputs "c".</span> |
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27 <a name="l00020"></a>00020 <span class="comment">//</span> |
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28 <a name="l00021"></a>00021 |
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29 <a name="l00022"></a>00022 <span class="preprocessor">#include "CommonFramework.h"</span> |
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30 <a name="l00023"></a>00023 |
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31 <a name="l00024"></a>00024 <span class="comment">//</span> |
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32 <a name="l00025"></a>00025 <span class="comment">// Common literal text</span> |
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33 <a name="l00026"></a>00026 <span class="comment">//</span> |
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34 <a name="l00027"></a>00027 _LIT(KTextEsc,<span class="stringliteral">"\n"</span>); |
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35 <a name="l00028"></a>00028 |
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36 <a name="l00029"></a>00029 <span class="comment">// panics</span> |
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37 <a name="l00030"></a>00030 <span class="keyword">enum</span> |
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38 <a name="l00031"></a>00031 { |
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39 <a name="l00032"></a>00032 EPanicAlreadyActive=1000, |
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40 <a name="l00033"></a>00033 }; |
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41 <a name="l00034"></a>00034 |
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42 <a name="l00035"></a>00035 |
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43 <a name="l00037"></a>00037 <span class="comment">//</span> |
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44 <a name="l00038"></a>00038 <span class="comment">// -----> CTimedMessenger (definition)</span> |
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45 <a name="l00039"></a>00039 <span class="comment">//</span> |
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46 <a name="l00041"></a>00041 <span class="comment"></span><span class="keyword">class </span>CTimedMessenger : <span class="keyword">public</span> CTimer |
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47 <a name="l00042"></a>00042 { |
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48 <a name="l00043"></a>00043 <span class="keyword">public</span>: |
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49 <a name="l00044"></a>00044 <span class="comment">// Construction</span> |
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50 <a name="l00045"></a>00045 CTimedMessenger(); |
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51 <a name="l00046"></a>00046 <span class="comment">// Destruction</span> |
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52 <a name="l00047"></a>00047 ~CTimedMessenger(); |
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53 <a name="l00048"></a>00048 |
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54 <a name="l00049"></a>00049 <span class="keyword">public</span>: |
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55 <a name="l00050"></a>00050 <span class="comment">// Static construction</span> |
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56 <a name="l00051"></a>00051 <span class="keyword">static</span> CTimedMessenger* NewLC(<span class="keyword">const</span> TDesC& aGreeting, |
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57 <a name="l00052"></a>00052 TInt aTicksRequested, |
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58 <a name="l00053"></a>00053 TInt aTicksInterval |
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59 <a name="l00054"></a>00054 ); |
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60 <a name="l00055"></a>00055 <span class="keyword">static</span> CTimedMessenger* NewL(<span class="keyword">const</span> TDesC& aGreeting, |
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61 <a name="l00056"></a>00056 TInt aTicksRequested, |
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62 <a name="l00057"></a>00057 TInt aTicksInterval |
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63 <a name="l00058"></a>00058 ); |
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64 <a name="l00059"></a>00059 |
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65 <a name="l00060"></a>00060 <span class="keyword">public</span>: |
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66 <a name="l00061"></a>00061 <span class="comment">// Second phase construction</span> |
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67 <a name="l00062"></a>00062 <span class="keywordtype">void</span> ConstructL(<span class="keyword">const</span> TDesC& aGreeting, |
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68 <a name="l00063"></a>00063 TInt aTicksRequested, |
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69 <a name="l00064"></a>00064 TInt aTicksInterval |
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70 <a name="l00065"></a>00065 ); |
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71 <a name="l00066"></a>00066 |
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72 <a name="l00067"></a>00067 <span class="comment">// issue request</span> |
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73 <a name="l00068"></a>00068 <span class="keywordtype">void</span> IssueRequest(); |
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74 <a name="l00069"></a>00069 |
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75 <a name="l00070"></a>00070 <span class="comment">// Cancel request</span> |
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76 <a name="l00071"></a>00071 <span class="comment">// Defined as pure virtual by CActive;</span> |
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77 <a name="l00072"></a>00072 <span class="comment">// implementation provided by this class.</span> |
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78 <a name="l00073"></a>00073 <span class="keywordtype">void</span> DoCancel(); |
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79 <a name="l00074"></a>00074 |
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80 <a name="l00075"></a>00075 <span class="comment">// service completed request.</span> |
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81 <a name="l00076"></a>00076 <span class="comment">// Defined as pure virtual by CActive;</span> |
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82 <a name="l00077"></a>00077 <span class="comment">// implementation provided by this class.</span> |
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83 <a name="l00078"></a>00078 <span class="keywordtype">void</span> RunL(); |
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84 <a name="l00079"></a>00079 |
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85 <a name="l00080"></a>00080 <span class="keyword">public</span>: |
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86 <a name="l00081"></a>00081 <span class="comment">// data members defined by this class</span> |
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87 <a name="l00082"></a>00082 TBufC<20> iGreeting; <span class="comment">// Text of the greeting.</span> |
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88 <a name="l00083"></a>00083 TInt iTicksRequested; <span class="comment">// Total number of greetings CTimedMessenger</span> |
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89 <a name="l00084"></a>00084 <span class="comment">// will emit.</span> |
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90 <a name="l00085"></a>00085 TInt iTicksInterval; <span class="comment">// Number of seconds between each greeting.</span> |
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91 <a name="l00086"></a>00086 TInt iTicksDone; <span class="comment">// Number of greetings issued so far.</span> |
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92 <a name="l00087"></a>00087 }; |
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93 <a name="l00088"></a>00088 |
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94 <a name="l00089"></a>00089 |
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95 <a name="l00091"></a>00091 <span class="comment">//</span> |
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96 <a name="l00092"></a>00092 <span class="comment">// -----> CExampleScheduler (definition)</span> |
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97 <a name="l00093"></a>00093 <span class="comment">//</span> |
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98 <a name="l00095"></a>00095 <span class="comment"></span><span class="keyword">class </span>CExampleScheduler : <span class="keyword">public</span> CActiveScheduler |
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99 <a name="l00096"></a>00096 { |
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100 <a name="l00097"></a>00097 <span class="keyword">public</span>: |
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101 <a name="l00098"></a>00098 <span class="keywordtype">void</span> Error (TInt aError) <span class="keyword">const</span>; |
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102 <a name="l00099"></a>00099 }; |
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103 <a name="l00100"></a>00100 |
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104 <a name="l00101"></a>00101 |
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105 <a name="l00103"></a>00103 <span class="comment">//</span> |
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106 <a name="l00104"></a>00104 <span class="comment">// -----> CActiveConsole (definition)</span> |
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107 <a name="l00105"></a>00105 <span class="comment">//</span> |
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108 <a name="l00106"></a>00106 <span class="comment">// An abstract class which provides the facility to issue key requests. </span> |
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109 <a name="l00107"></a>00107 <span class="comment">//</span> |
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110 <a name="l00109"></a>00109 <span class="comment"></span><span class="keyword">class </span>CActiveConsole : <span class="keyword">public</span> CActive |
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111 <a name="l00110"></a>00110 { |
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112 <a name="l00111"></a>00111 <span class="keyword">public</span>: |
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113 <a name="l00112"></a>00112 <span class="comment">// Construction</span> |
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114 <a name="l00113"></a>00113 CActiveConsole(CConsoleBase* aConsole); |
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115 <a name="l00114"></a>00114 <span class="keywordtype">void</span> ConstructL(); |
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116 <a name="l00115"></a>00115 |
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117 <a name="l00116"></a>00116 <span class="comment">// Destruction</span> |
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118 <a name="l00117"></a>00117 ~CActiveConsole(); |
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119 <a name="l00118"></a>00118 |
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120 <a name="l00119"></a>00119 <span class="comment">// Issue request</span> |
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121 <a name="l00120"></a>00120 <span class="keywordtype">void</span> RequestCharacter(); |
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122 <a name="l00121"></a>00121 |
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123 <a name="l00122"></a>00122 <span class="comment">// Cancel request.</span> |
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124 <a name="l00123"></a>00123 <span class="comment">// Defined as pure virtual by CActive;</span> |
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125 <a name="l00124"></a>00124 <span class="comment">// implementation provided by this class.</span> |
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126 <a name="l00125"></a>00125 <span class="keywordtype">void</span> DoCancel(); |
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127 <a name="l00126"></a>00126 |
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128 <a name="l00127"></a>00127 <span class="comment">// Service completed request.</span> |
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129 <a name="l00128"></a>00128 <span class="comment">// Defined as pure virtual by CActive;</span> |
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130 <a name="l00129"></a>00129 <span class="comment">// implementation provided by this class,</span> |
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131 <a name="l00130"></a>00130 <span class="keywordtype">void</span> RunL(); |
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132 <a name="l00131"></a>00131 |
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133 <a name="l00132"></a>00132 <span class="comment">// Called from RunL() - an implementation must be provided</span> |
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134 <a name="l00133"></a>00133 <span class="comment">// by derived classes to handle the completed request</span> |
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135 <a name="l00134"></a>00134 <span class="keyword">virtual</span> <span class="keywordtype">void</span> ProcessKeyPress(TChar aChar) = 0; |
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136 <a name="l00135"></a>00135 |
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137 <a name="l00136"></a>00136 <span class="keyword">protected</span>: |
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138 <a name="l00137"></a>00137 <span class="comment">// Data members defined by this class</span> |
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139 <a name="l00138"></a>00138 CConsoleBase* iConsole; <span class="comment">// A console for reading from</span> |
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140 <a name="l00139"></a>00139 }; |
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141 <a name="l00140"></a>00140 |
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142 <a name="l00141"></a>00141 |
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143 <a name="l00143"></a>00143 <span class="comment">//</span> |
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144 <a name="l00144"></a>00144 <span class="comment">// -----> CWriteKeyProcessor (definition)</span> |
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145 <a name="l00145"></a>00145 <span class="comment">//</span> |
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146 <a name="l00146"></a>00146 <span class="comment">// This class is derived from CActiveConsole. </span> |
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147 <a name="l00147"></a>00147 <span class="comment">// Request handling: accepts input from the keyboard and outputs it </span> |
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148 <a name="l00148"></a>00148 <span class="comment">// to the console.</span> |
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149 <a name="l00149"></a>00149 <span class="comment">//</span> |
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150 <a name="l00151"></a>00151 <span class="comment"></span><span class="keyword">class </span>CWriteKeyProcessor : <span class="keyword">public</span> CActiveConsole |
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151 <a name="l00152"></a>00152 { |
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152 <a name="l00153"></a>00153 <span class="keyword">public</span>: |
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153 <a name="l00154"></a>00154 <span class="comment">// Construction</span> |
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154 <a name="l00155"></a>00155 CWriteKeyProcessor(CConsoleBase* aConsole); |
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155 <a name="l00156"></a>00156 |
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156 <a name="l00157"></a>00157 <span class="keyword">public</span>: |
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157 <a name="l00158"></a>00158 <span class="comment">// Static constuction</span> |
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158 <a name="l00159"></a>00159 <span class="keyword">static</span> CWriteKeyProcessor *NewLC (CConsoleBase* aConsole); |
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159 <a name="l00160"></a>00160 <span class="keyword">static</span> CWriteKeyProcessor *NewL(CConsoleBase* aConsole); |
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160 <a name="l00161"></a>00161 |
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161 <a name="l00162"></a>00162 <span class="comment">// Service request</span> |
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162 <a name="l00163"></a>00163 <span class="keywordtype">void</span> ProcessKeyPress(TChar aChar); |
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163 <a name="l00164"></a>00164 }; |
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164 <a name="l00165"></a>00165 |
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165 <a name="l00166"></a>00166 |
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166 <a name="l00168"></a>00168 <span class="comment">//</span> |
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167 <a name="l00169"></a>00169 <span class="comment">// -----> CTimedMessenger (implementation)</span> |
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168 <a name="l00170"></a>00170 <span class="comment">//</span> |
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169 <a name="l00172"></a>00172 <span class="comment"></span>CTimedMessenger::CTimedMessenger() |
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170 <a name="l00173"></a>00173 : CTimer(CActive::EPriorityStandard) |
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171 <a name="l00174"></a>00174 <span class="comment">// Construct zero-priority active object</span> |
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172 <a name="l00175"></a>00175 {}; |
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173 <a name="l00176"></a>00176 |
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174 <a name="l00177"></a>00177 CTimedMessenger* CTimedMessenger::NewLC(<span class="keyword">const</span> TDesC& aGreeting, |
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175 <a name="l00178"></a>00178 TInt aTicksRequested, |
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176 <a name="l00179"></a>00179 TInt aTicksInterval |
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177 <a name="l00180"></a>00180 ) |
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178 <a name="l00181"></a>00181 { |
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179 <a name="l00182"></a>00182 CTimedMessenger* <span class="keyword">self</span>=<span class="keyword">new</span> (ELeave) CTimedMessenger; |
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180 <a name="l00183"></a>00183 CleanupStack::PushL(<span class="keyword">self</span>); |
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181 <a name="l00184"></a>00184 <span class="keyword">self</span>->ConstructL(aGreeting,aTicksRequested,aTicksInterval); |
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182 <a name="l00185"></a>00185 <span class="keywordflow">return</span> <span class="keyword">self</span>; |
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183 <a name="l00186"></a>00186 } |
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184 <a name="l00187"></a>00187 |
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185 <a name="l00188"></a>00188 CTimedMessenger* CTimedMessenger::NewL(<span class="keyword">const</span> TDesC& aGreeting, |
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186 <a name="l00189"></a>00189 TInt aTicksRequested, |
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187 <a name="l00190"></a>00190 TInt aTicksInterval |
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188 <a name="l00191"></a>00191 ) |
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189 <a name="l00192"></a>00192 { |
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190 <a name="l00193"></a>00193 CTimedMessenger* <span class="keyword">self</span> = <a class="code" href="class_c_thread_server.html#7c41592480f2c412599c332f52a61347">NewLC</a>(aGreeting,aTicksRequested,aTicksInterval); |
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191 <a name="l00194"></a>00194 CleanupStack::Pop(); |
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192 <a name="l00195"></a>00195 <span class="keywordflow">return</span> <span class="keyword">self</span>; |
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193 <a name="l00196"></a>00196 } |
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194 <a name="l00197"></a>00197 |
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195 <a name="l00198"></a>00198 <span class="keywordtype">void</span> CTimedMessenger::ConstructL(<span class="keyword">const</span> TDesC& aGreeting, |
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196 <a name="l00199"></a>00199 TInt aTicksRequested, |
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197 <a name="l00200"></a>00200 TInt aTicksInterval |
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198 <a name="l00201"></a>00201 ) |
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199 <a name="l00202"></a>00202 { |
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200 <a name="l00203"></a>00203 <span class="comment">// Base class second-phase construction.</span> |
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201 <a name="l00204"></a>00204 CTimer::ConstructL(); |
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202 <a name="l00205"></a>00205 <span class="comment">// Set members from arguments</span> |
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203 <a name="l00206"></a>00206 iGreeting = aGreeting; <span class="comment">// Set greeting text.</span> |
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204 <a name="l00207"></a>00207 iTicksRequested = aTicksRequested; <span class="comment">// Ticks requested</span> |
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205 <a name="l00208"></a>00208 iTicksInterval = aTicksInterval; <span class="comment">// Interval between ticks</span> |
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206 <a name="l00209"></a>00209 <span class="comment">// Add active object to active scheduler</span> |
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207 <a name="l00210"></a>00210 CActiveScheduler::Add(<span class="keyword">this</span>); |
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208 <a name="l00211"></a>00211 } |
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209 <a name="l00212"></a>00212 |
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210 <a name="l00213"></a>00213 |
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211 <a name="l00214"></a>00214 CTimedMessenger::~CTimedMessenger() |
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212 <a name="l00215"></a>00215 { |
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213 <a name="l00216"></a>00216 <span class="comment">// Make sure we're cancelled</span> |
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214 <a name="l00217"></a>00217 Cancel(); |
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215 <a name="l00218"></a>00218 } |
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216 <a name="l00219"></a>00219 |
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217 <a name="l00220"></a>00220 <span class="keywordtype">void</span> CTimedMessenger::DoCancel() |
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218 <a name="l00221"></a>00221 { |
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219 <a name="l00222"></a>00222 <span class="comment">// Base class</span> |
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220 <a name="l00223"></a>00223 CTimer::DoCancel(); |
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221 <a name="l00224"></a>00224 <span class="comment">// Reset this variable - needed if the object is re-activated later</span> |
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222 <a name="l00225"></a>00225 iTicksDone = 0; |
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223 <a name="l00226"></a>00226 <span class="comment">// Tell user</span> |
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224 <a name="l00227"></a>00227 _LIT(KMsgCancelled,<span class="stringliteral">"Outstanding Messenger request cancelled\n"</span>); |
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225 <a name="l00228"></a>00228 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KMsgCancelled); |
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226 <a name="l00229"></a>00229 } |
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227 <a name="l00230"></a>00230 |
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228 <a name="l00231"></a>00231 <span class="keywordtype">void</span> CTimedMessenger::IssueRequest() |
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229 <a name="l00232"></a>00232 { |
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230 <a name="l00233"></a>00233 <span class="comment">// There should never be an outstanding request at this point.</span> |
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231 <a name="l00234"></a>00234 _LIT(KMsgAlreadyActive,<span class="stringliteral">"Is already Active"</span>); |
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232 <a name="l00235"></a>00235 __ASSERT_ALWAYS(!IsActive(),User::Panic(KMsgAlreadyActive,EPanicAlreadyActive)); |
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233 <a name="l00236"></a>00236 <span class="comment">// Request another wait</span> |
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234 <a name="l00237"></a>00237 CTimer::After( iTicksInterval*1000000); |
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235 <a name="l00238"></a>00238 } |
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236 <a name="l00239"></a>00239 |
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237 <a name="l00240"></a>00240 <span class="keywordtype">void</span> CTimedMessenger::RunL() |
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238 <a name="l00241"></a>00241 { |
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239 <a name="l00242"></a>00242 <span class="comment">// Handle request completion</span> |
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240 <a name="l00243"></a>00243 <span class="comment">// One more tick done</span> |
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241 <a name="l00244"></a>00244 iTicksDone++; |
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242 <a name="l00245"></a>00245 <span class="comment">// Print greeting</span> |
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243 <a name="l00246"></a>00246 _LIT(KFormatString1,<span class="stringliteral">"%S \n"</span>); |
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244 <a name="l00247"></a>00247 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KFormatString1,&iGreeting); |
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245 <a name="l00248"></a>00248 <span class="comment">// Issue new request, or stop if we have reached the limit</span> |
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246 <a name="l00249"></a>00249 <span class="keywordflow">if</span> (iTicksDone < iTicksRequested) |
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247 <a name="l00250"></a>00250 { |
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248 <a name="l00251"></a>00251 IssueRequest(); |
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249 <a name="l00252"></a>00252 } |
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250 <a name="l00253"></a>00253 <span class="keywordflow">else</span> |
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251 <a name="l00254"></a>00254 { |
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252 <a name="l00255"></a>00255 _LIT(KMsgFinished,<span class="stringliteral">"Messenger finished \n"</span>); |
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253 <a name="l00256"></a>00256 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KMsgFinished); |
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254 <a name="l00257"></a>00257 <span class="comment">// Reset this variable - needed if the object is re-activated later</span> |
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255 <a name="l00258"></a>00258 iTicksDone=0; |
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256 <a name="l00259"></a>00259 <span class="comment">// Can now stop the active scheduler</span> |
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257 <a name="l00260"></a>00260 CActiveScheduler::Stop(); |
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258 <a name="l00261"></a>00261 } |
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259 <a name="l00262"></a>00262 } |
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260 <a name="l00263"></a>00263 |
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261 <a name="l00264"></a>00264 |
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262 <a name="l00266"></a>00266 <span class="comment">//</span> |
|
263 <a name="l00267"></a>00267 <span class="comment">// -----> CExampleScheduler (implementation)</span> |
|
264 <a name="l00268"></a>00268 <span class="comment">//</span> |
|
265 <a name="l00270"></a>00270 <span class="comment"></span><span class="keywordtype">void</span> CExampleScheduler::Error(TInt aError)<span class="keyword"> const</span> |
|
266 <a name="l00271"></a>00271 <span class="keyword"> </span>{ |
|
267 <a name="l00272"></a>00272 _LIT(KMsgSchedErr,<span class="stringliteral">"CExampleScheduler-error"</span>); |
|
268 <a name="l00273"></a>00273 User::Panic(KMsgSchedErr,aError); |
|
269 <a name="l00274"></a>00274 } |
|
270 <a name="l00275"></a>00275 |
|
271 <a name="l00276"></a>00276 |
|
272 <a name="l00278"></a>00278 <span class="comment">//</span> |
|
273 <a name="l00279"></a>00279 <span class="comment">// -----> CActiveConsole (implementation)</span> |
|
274 <a name="l00280"></a>00280 <span class="comment">//</span> |
|
275 <a name="l00282"></a>00282 <span class="comment"></span>CActiveConsole::CActiveConsole( CConsoleBase* aConsole) |
|
276 <a name="l00283"></a>00283 : CActive(CActive::EPriorityUserInput) |
|
277 <a name="l00284"></a>00284 <span class="comment">// Construct high-priority active object</span> |
|
278 <a name="l00285"></a>00285 { |
|
279 <a name="l00286"></a>00286 iConsole = aConsole; |
|
280 <a name="l00287"></a>00287 } |
|
281 <a name="l00288"></a>00288 |
|
282 <a name="l00289"></a>00289 <span class="keywordtype">void</span> CActiveConsole::ConstructL() |
|
283 <a name="l00290"></a>00290 { |
|
284 <a name="l00291"></a>00291 <span class="comment">// Add to active scheduler</span> |
|
285 <a name="l00292"></a>00292 CActiveScheduler::Add(<span class="keyword">this</span>); |
|
286 <a name="l00293"></a>00293 } |
|
287 <a name="l00294"></a>00294 |
|
288 <a name="l00295"></a>00295 CActiveConsole::~CActiveConsole() |
|
289 <a name="l00296"></a>00296 { |
|
290 <a name="l00297"></a>00297 <span class="comment">// Make sure we're cancelled</span> |
|
291 <a name="l00298"></a>00298 Cancel(); |
|
292 <a name="l00299"></a>00299 } |
|
293 <a name="l00300"></a>00300 |
|
294 <a name="l00301"></a>00301 <span class="keywordtype">void</span> CActiveConsole::DoCancel() |
|
295 <a name="l00302"></a>00302 { |
|
296 <a name="l00303"></a>00303 iConsole->ReadCancel(); |
|
297 <a name="l00304"></a>00304 } |
|
298 <a name="l00305"></a>00305 |
|
299 <a name="l00306"></a>00306 <span class="keywordtype">void</span> CActiveConsole::RunL() |
|
300 <a name="l00307"></a>00307 { |
|
301 <a name="l00308"></a>00308 <span class="comment">// Handle completed request</span> |
|
302 <a name="l00309"></a>00309 ProcessKeyPress(TChar(iConsole->KeyCode())); |
|
303 <a name="l00310"></a>00310 } |
|
304 <a name="l00311"></a>00311 |
|
305 <a name="l00312"></a>00312 <span class="keywordtype">void</span> CActiveConsole::RequestCharacter() |
|
306 <a name="l00313"></a>00313 { |
|
307 <a name="l00314"></a>00314 <span class="comment">// A request is issued to the CConsoleBase to accept a</span> |
|
308 <a name="l00315"></a>00315 <span class="comment">// character from the keyboard.</span> |
|
309 <a name="l00316"></a>00316 iConsole->Read(iStatus); |
|
310 <a name="l00317"></a>00317 SetActive(); |
|
311 <a name="l00318"></a>00318 } |
|
312 <a name="l00319"></a>00319 |
|
313 <a name="l00320"></a>00320 |
|
314 <a name="l00322"></a>00322 <span class="comment">//</span> |
|
315 <a name="l00323"></a>00323 <span class="comment">// -----> CWriteKeyProcessor (implementation)</span> |
|
316 <a name="l00324"></a>00324 <span class="comment">//</span> |
|
317 <a name="l00326"></a>00326 <span class="comment"></span>CWriteKeyProcessor::CWriteKeyProcessor(CConsoleBase* aConsole) |
|
318 <a name="l00327"></a>00327 : CActiveConsole(aConsole) |
|
319 <a name="l00328"></a>00328 |
|
320 <a name="l00329"></a>00329 {}; |
|
321 <a name="l00330"></a>00330 |
|
322 <a name="l00331"></a>00331 CWriteKeyProcessor* CWriteKeyProcessor::NewLC(CConsoleBase* aConsole) |
|
323 <a name="l00332"></a>00332 { |
|
324 <a name="l00333"></a>00333 CWriteKeyProcessor* <span class="keyword">self</span>=<span class="keyword">new</span> (ELeave) CWriteKeyProcessor(aConsole); |
|
325 <a name="l00334"></a>00334 CleanupStack::PushL(<span class="keyword">self</span>); |
|
326 <a name="l00335"></a>00335 <span class="keyword">self</span>->ConstructL(); |
|
327 <a name="l00336"></a>00336 <span class="keywordflow">return</span> <span class="keyword">self</span>; |
|
328 <a name="l00337"></a>00337 } |
|
329 <a name="l00338"></a>00338 |
|
330 <a name="l00339"></a>00339 CWriteKeyProcessor* CWriteKeyProcessor::NewL(CConsoleBase* aConsole) |
|
331 <a name="l00340"></a>00340 { |
|
332 <a name="l00341"></a>00341 CWriteKeyProcessor* <span class="keyword">self</span>=<a class="code" href="class_c_thread_server.html#7c41592480f2c412599c332f52a61347">NewLC</a>(aConsole); |
|
333 <a name="l00342"></a>00342 CleanupStack::Pop(); |
|
334 <a name="l00343"></a>00343 <span class="keywordflow">return</span> <span class="keyword">self</span>; |
|
335 <a name="l00344"></a>00344 } |
|
336 <a name="l00345"></a>00345 |
|
337 <a name="l00346"></a>00346 <span class="keywordtype">void</span> CWriteKeyProcessor::ProcessKeyPress(TChar aChar) |
|
338 <a name="l00347"></a>00347 { |
|
339 <a name="l00348"></a>00348 <span class="comment">// "Esc" character prints a new line and stops the scheduler</span> |
|
340 <a name="l00349"></a>00349 <span class="keywordflow">if</span> (aChar == EKeyEscape) |
|
341 <a name="l00350"></a>00350 { |
|
342 <a name="l00351"></a>00351 iConsole->Printf(KTextEsc); |
|
343 <a name="l00352"></a>00352 CActiveScheduler::Stop(); |
|
344 <a name="l00353"></a>00353 <span class="keywordflow">return</span>; |
|
345 <a name="l00354"></a>00354 } |
|
346 <a name="l00355"></a>00355 |
|
347 <a name="l00356"></a>00356 <span class="comment">// "Enter" prints a new line character</span> |
|
348 <a name="l00357"></a>00357 <span class="comment">// An alphabetic or space is printed as a character;</span> |
|
349 <a name="l00358"></a>00358 <span class="comment">// anything else is printed as an integer.</span> |
|
350 <a name="l00359"></a>00359 <span class="keywordflow">if</span> (aChar == EKeyEnter) |
|
351 <a name="l00360"></a>00360 iConsole->Printf(KTextEsc); |
|
352 <a name="l00361"></a>00361 <span class="keywordflow">else</span> |
|
353 <a name="l00362"></a>00362 { |
|
354 <a name="l00363"></a>00363 _LIT(KFormatString2,<span class="stringliteral">"%c"</span>); |
|
355 <a name="l00364"></a>00364 _LIT(KFormatString3,<span class="stringliteral">"%d"</span>); |
|
356 <a name="l00365"></a>00365 <span class="keywordflow">if</span> (aChar.IsAlphaDigit()|| aChar.IsSpace()) |
|
357 <a name="l00366"></a>00366 iConsole->Printf(KFormatString2,TUint(aChar)); |
|
358 <a name="l00367"></a>00367 <span class="keywordflow">else</span> |
|
359 <a name="l00368"></a>00368 iConsole->Printf(KFormatString3,TUint(aChar)); |
|
360 <a name="l00369"></a>00369 } |
|
361 <a name="l00370"></a>00370 |
|
362 <a name="l00371"></a>00371 <span class="comment">// Issue another request </span> |
|
363 <a name="l00372"></a>00372 RequestCharacter(); |
|
364 <a name="l00373"></a>00373 } |
|
365 <a name="l00374"></a>00374 |
|
366 <a name="l00375"></a>00375 |
|
367 <a name="l00377"></a>00377 <span class="comment">//</span> |
|
368 <a name="l00378"></a>00378 <span class="comment">// -----> CMessageKeyProcessor (definition)</span> |
|
369 <a name="l00379"></a>00379 <span class="comment">//</span> |
|
370 <a name="l00380"></a>00380 <span class="comment">// This class is derived from CActiveConsole. </span> |
|
371 <a name="l00381"></a>00381 <span class="comment">// Request handling:</span> |
|
372 <a name="l00382"></a>00382 <span class="comment">// if key is "m", a message timer request is issued.</span> |
|
373 <a name="l00383"></a>00383 <span class="comment">// if key is "c", any outstanding message timer request is cancelled.</span> |
|
374 <a name="l00384"></a>00384 <span class="comment">// If key is ESC, the wait loop is terminated.</span> |
|
375 <a name="l00385"></a>00385 <span class="comment">//</span> |
|
376 <a name="l00387"></a>00387 <span class="comment"></span><span class="keyword">class </span>CMessageKeyProcessor : <span class="keyword">public</span> CActiveConsole |
|
377 <a name="l00388"></a>00388 { |
|
378 <a name="l00389"></a>00389 <span class="keyword">public</span>: |
|
379 <a name="l00390"></a>00390 <span class="comment">// Construction</span> |
|
380 <a name="l00391"></a>00391 CMessageKeyProcessor(CConsoleBase* aConsole, CTimedMessenger* iMessenger); |
|
381 <a name="l00392"></a>00392 <span class="keywordtype">void</span> ConstructL(); |
|
382 <a name="l00393"></a>00393 |
|
383 <a name="l00394"></a>00394 <span class="keyword">public</span>: |
|
384 <a name="l00395"></a>00395 <span class="comment">// Static construction</span> |
|
385 <a name="l00396"></a>00396 <span class="keyword">static</span> CMessageKeyProcessor* <a class="code" href="class_c_thread_server.html#7c41592480f2c412599c332f52a61347">NewLC</a>(CConsoleBase* aConsole, |
|
386 <a name="l00397"></a>00397 CTimedMessenger* iMessenger |
|
387 <a name="l00398"></a>00398 ); |
|
388 <a name="l00399"></a>00399 <span class="keyword">static</span> CMessageKeyProcessor* NewL(CConsoleBase* aConsole, |
|
389 <a name="l00400"></a>00400 CTimedMessenger* iMessenger |
|
390 <a name="l00401"></a>00401 ); |
|
391 <a name="l00402"></a>00402 |
|
392 <a name="l00403"></a>00403 <span class="keyword">public</span>: |
|
393 <a name="l00404"></a>00404 <span class="comment">// service request</span> |
|
394 <a name="l00405"></a>00405 <span class="keywordtype">void</span> ProcessKeyPress(TChar aChar); |
|
395 <a name="l00406"></a>00406 |
|
396 <a name="l00407"></a>00407 <span class="keyword">private</span>: |
|
397 <a name="l00408"></a>00408 <span class="comment">// Data members defined by this class</span> |
|
398 <a name="l00409"></a>00409 CTimedMessenger* iMessenger; |
|
399 <a name="l00410"></a>00410 }; |
|
400 <a name="l00411"></a>00411 |
|
401 <a name="l00413"></a>00413 <span class="comment">//</span> |
|
402 <a name="l00414"></a>00414 <span class="comment">// -----> CMessageKeyProcessor (implementation)</span> |
|
403 <a name="l00415"></a>00415 <span class="comment">//</span> |
|
404 <a name="l00417"></a>00417 <span class="comment"></span>CMessageKeyProcessor::CMessageKeyProcessor(CConsoleBase* aConsole, |
|
405 <a name="l00418"></a>00418 CTimedMessenger* aMessenger |
|
406 <a name="l00419"></a>00419 ) |
|
407 <a name="l00420"></a>00420 : CActiveConsole(aConsole) |
|
408 <a name="l00421"></a>00421 <span class="comment">// construct zero-priority active object</span> |
|
409 <a name="l00422"></a>00422 { |
|
410 <a name="l00423"></a>00423 iMessenger = aMessenger; |
|
411 <a name="l00424"></a>00424 } |
|
412 <a name="l00425"></a>00425 |
|
413 <a name="l00426"></a>00426 CMessageKeyProcessor* CMessageKeyProcessor::NewLC(CConsoleBase* aConsole, |
|
414 <a name="l00427"></a>00427 CTimedMessenger* aMessenger |
|
415 <a name="l00428"></a>00428 ) |
|
416 <a name="l00429"></a>00429 { |
|
417 <a name="l00430"></a>00430 CMessageKeyProcessor* <span class="keyword">self</span>=<span class="keyword">new</span> (ELeave) CMessageKeyProcessor(aConsole, |
|
418 <a name="l00431"></a>00431 aMessenger |
|
419 <a name="l00432"></a>00432 ); |
|
420 <a name="l00433"></a>00433 CleanupStack::PushL(<span class="keyword">self</span>); |
|
421 <a name="l00434"></a>00434 <span class="keyword">self</span>->ConstructL(); |
|
422 <a name="l00435"></a>00435 <span class="keywordflow">return</span> <span class="keyword">self</span>; |
|
423 <a name="l00436"></a>00436 } |
|
424 <a name="l00437"></a>00437 |
|
425 <a name="l00438"></a>00438 CMessageKeyProcessor* CMessageKeyProcessor::NewL(CConsoleBase* aConsole, |
|
426 <a name="l00439"></a>00439 CTimedMessenger* aMessenger |
|
427 <a name="l00440"></a>00440 ) |
|
428 <a name="l00441"></a>00441 { |
|
429 <a name="l00442"></a>00442 CMessageKeyProcessor* <span class="keyword">self</span> = <a class="code" href="class_c_thread_server.html#7c41592480f2c412599c332f52a61347">NewLC</a>(aConsole, aMessenger); |
|
430 <a name="l00443"></a>00443 CleanupStack::Pop(); |
|
431 <a name="l00444"></a>00444 <span class="keywordflow">return</span> <span class="keyword">self</span>; |
|
432 <a name="l00445"></a>00445 } |
|
433 <a name="l00446"></a>00446 |
|
434 <a name="l00447"></a>00447 <span class="keywordtype">void</span> CMessageKeyProcessor::ConstructL() |
|
435 <a name="l00448"></a>00448 { |
|
436 <a name="l00449"></a>00449 <span class="comment">// Add to active scheduler</span> |
|
437 <a name="l00450"></a>00450 CActiveScheduler::Add(<span class="keyword">this</span>); |
|
438 <a name="l00451"></a>00451 } |
|
439 <a name="l00452"></a>00452 |
|
440 <a name="l00453"></a>00453 <span class="keywordtype">void</span> CMessageKeyProcessor::ProcessKeyPress(TChar aChar) |
|
441 <a name="l00454"></a>00454 { |
|
442 <a name="l00455"></a>00455 <span class="comment">// if key is ESC </span> |
|
443 <a name="l00456"></a>00456 <span class="comment">// cancel any outstanding request</span> |
|
444 <a name="l00457"></a>00457 <span class="comment">// stop the scheduler</span> |
|
445 <a name="l00458"></a>00458 <span class="keywordflow">if</span> (aChar == EKeyEscape) |
|
446 <a name="l00459"></a>00459 { |
|
447 <a name="l00460"></a>00460 iMessenger->Cancel(); |
|
448 <a name="l00461"></a>00461 CActiveScheduler::Stop(); |
|
449 <a name="l00462"></a>00462 <span class="keywordflow">return</span>; |
|
450 <a name="l00463"></a>00463 } |
|
451 <a name="l00464"></a>00464 |
|
452 <a name="l00465"></a>00465 <span class="comment">// If key is "m" or "M"</span> |
|
453 <a name="l00466"></a>00466 <span class="comment">// cancel any outstanding request</span> |
|
454 <a name="l00467"></a>00467 <span class="comment">// reset the tick counter</span> |
|
455 <a name="l00468"></a>00468 <span class="comment">// issue a message timer request.</span> |
|
456 <a name="l00469"></a>00469 <span class="keywordflow">if</span> (aChar == <span class="charliteral">'m'</span> || aChar == <span class="charliteral">'M'</span>) |
|
457 <a name="l00470"></a>00470 { |
|
458 <a name="l00471"></a>00471 _LIT(KMsgStarting,<span class="stringliteral">"Starting Messenger.... \n"</span>); |
|
459 <a name="l00472"></a>00472 iConsole->Printf(KMsgStarting); |
|
460 <a name="l00473"></a>00473 iMessenger->Cancel(); |
|
461 <a name="l00474"></a>00474 iMessenger ->IssueRequest(); |
|
462 <a name="l00475"></a>00475 } |
|
463 <a name="l00476"></a>00476 |
|
464 <a name="l00477"></a>00477 <span class="comment">// If key is "c" or "C" </span> |
|
465 <a name="l00478"></a>00478 <span class="comment">// cancel any outstanding request </span> |
|
466 <a name="l00479"></a>00479 <span class="keywordflow">if</span> (aChar == <span class="charliteral">'c'</span> || aChar == <span class="charliteral">'C'</span>) |
|
467 <a name="l00480"></a>00480 iMessenger->Cancel(); |
|
468 <a name="l00481"></a>00481 |
|
469 <a name="l00482"></a>00482 <span class="comment">// Ask for another character.</span> |
|
470 <a name="l00483"></a>00483 RequestCharacter(); |
|
471 <a name="l00484"></a>00484 } |
|
472 <a name="l00485"></a>00485 |
|
473 <a name="l00486"></a>00486 |
|
474 <a name="l00488"></a>00488 <span class="comment">//</span> |
|
475 <a name="l00489"></a>00489 <span class="comment">// Do the example</span> |
|
476 <a name="l00490"></a>00490 <span class="comment">//</span> |
|
477 <a name="l00492"></a>00492 <span class="comment"></span>LOCAL_C <span class="keywordtype">void</span> doExampleL() |
|
478 <a name="l00493"></a>00493 { |
|
479 <a name="l00494"></a>00494 <span class="comment">// Construct and install the active scheduler</span> |
|
480 <a name="l00495"></a>00495 CExampleScheduler* exampleScheduler = <span class="keyword">new</span> (ELeave) CExampleScheduler; |
|
481 <a name="l00496"></a>00496 |
|
482 <a name="l00497"></a>00497 <span class="comment">// Push onto the cleanup stack</span> |
|
483 <a name="l00498"></a>00498 CleanupStack::PushL(exampleScheduler); |
|
484 <a name="l00499"></a>00499 |
|
485 <a name="l00500"></a>00500 <span class="comment">// Install as the active scheduler</span> |
|
486 <a name="l00501"></a>00501 CActiveScheduler::Install(exampleScheduler); |
|
487 <a name="l00502"></a>00502 |
|
488 <a name="l00503"></a>00503 <span class="comment">// Create a CTimedMessenger active object which will emit</span> |
|
489 <a name="l00504"></a>00504 <span class="comment">// 3 messages with an interval of 2 seconds between messages.</span> |
|
490 <a name="l00505"></a>00505 _LIT(KMsgGoodMorning,<span class="stringliteral">"Good Morning!"</span>); |
|
491 <a name="l00506"></a>00506 CTimedMessenger* messenger = CTimedMessenger::NewLC(KMsgGoodMorning, 3, 2); |
|
492 <a name="l00507"></a>00507 |
|
493 <a name="l00508"></a>00508 <span class="comment">// Create aCMessageKeyProcessor active object.</span> |
|
494 <a name="l00509"></a>00509 _LIT(KMsgTitleA,<span class="stringliteral">"A single CKeyMessengerProcessor active object which contains a CMessageTimer.\n"</span>); |
|
495 <a name="l00510"></a>00510 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KMsgTitleA); |
|
496 <a name="l00511"></a>00511 _LIT(KMsgTitleB,<span class="stringliteral">"Press 'm' to activate messenger; Press 'c' to cancel it.\nPress ESC to end.\n\n"</span>); |
|
497 <a name="l00512"></a>00512 <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>->Printf(KMsgTitleB); |
|
498 <a name="l00513"></a>00513 CMessageKeyProcessor* keyProcesser = CMessageKeyProcessor::NewLC(<a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a>, |
|
499 <a name="l00514"></a>00514 messenger |
|
500 <a name="l00515"></a>00515 ); |
|
501 <a name="l00516"></a>00516 |
|
502 <a name="l00517"></a>00517 <span class="comment">// Issue the first request</span> |
|
503 <a name="l00518"></a>00518 keyProcesser->RequestCharacter(); |
|
504 <a name="l00519"></a>00519 |
|
505 <a name="l00520"></a>00520 <span class="comment">// Main part of the program is a wait loop</span> |
|
506 <a name="l00521"></a>00521 CActiveScheduler::Start(); |
|
507 <a name="l00522"></a>00522 |
|
508 <a name="l00523"></a>00523 <span class="comment">// Remove from the cleanup stack and destroy:</span> |
|
509 <a name="l00524"></a>00524 <span class="comment">// 1. the CTimedMessenger active object</span> |
|
510 <a name="l00525"></a>00525 <span class="comment">// 2. the CMessageKeyProcessor active object.</span> |
|
511 <a name="l00526"></a>00526 <span class="comment">// 3. exampleScheduler</span> |
|
512 <a name="l00527"></a>00527 CleanupStack::PopAndDestroy(3); |
|
513 <a name="l00528"></a>00528 } |
|
514 <a name="l00529"></a>00529 |
|
515 </pre></div><hr size="1"><address style="text-align: right;"><small>Generated on Thu Jan 21 10:32:56 2010 for TB10.1 Example Applications by |
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516 <a href="http://www.doxygen.org/index.html"> |
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517 <img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.3 </small></address> |
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518 </body> |
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519 </html> |