Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_accept_input1_8cpp_source.html
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<title>TB9.2 Example Applications: examples/Base/IPC/Async/AcceptInput1/AcceptInput1.cpp Source File</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<link href="doxygen.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<!-- Generated by Doxygen 1.6.2 -->
<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>
<a name="l00002"></a>00002 <span class="comment">// All rights reserved.</span>
<a name="l00003"></a>00003 <span class="comment">// This component and the accompanying materials are made available</span>
<a name="l00004"></a>00004 <span class="comment">// under the terms of "Eclipse Public License v1.0"</span>
<a name="l00005"></a>00005 <span class="comment">// which accompanies this distribution, and is available</span>
<a name="l00006"></a>00006 <span class="comment">// at the URL "http://www.eclipse.org/legal/epl-v10.html".</span>
<a name="l00007"></a>00007 <span class="comment">//</span>
<a name="l00008"></a>00008 <span class="comment">// Initial Contributors:</span>
<a name="l00009"></a>00009 <span class="comment">// Nokia Corporation - initial contribution.</span>
<a name="l00010"></a>00010 <span class="comment">//</span>
<a name="l00011"></a>00011 <span class="comment">// Contributors:</span>
<a name="l00012"></a>00012 <span class="comment">//</span>
<a name="l00013"></a>00013 <span class="comment">// Description:</span>
<a name="l00014"></a>00014 <span class="comment">// Asynchronous keyboard processing with messenger program.</span>
<a name="l00015"></a>00015 <span class="comment">// A single CKeyMessengerProcessor active object (derived from</span>
<a name="l00016"></a>00016 <span class="comment">// class CActiveConsole) which accepts input from keyboard, but does not</span>
<a name="l00017"></a>00017 <span class="comment">// print it.</span>
<a name="l00018"></a>00018 <span class="comment">// This object contains a CMessageTimer object which it activates if the</span>
<a name="l00019"></a>00019 <span class="comment">// user inputs the character "m" and cancelled if the user inputs "c".</span>
<a name="l00020"></a>00020 <span class="comment">//</span>
<a name="l00021"></a>00021
<a name="l00022"></a>00022 <span class="preprocessor">#include "CommonFramework.h"</span>
<a name="l00023"></a>00023
<a name="l00024"></a>00024 <span class="comment">//</span>
<a name="l00025"></a>00025 <span class="comment">// Common literal text</span>
<a name="l00026"></a>00026 <span class="comment">//</span>
<a name="l00027"></a>00027 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTextEsc,<span class="stringliteral">"\n"</span>);
<a name="l00028"></a>00028
<a name="l00029"></a>00029 <span class="comment">// panics</span>
<a name="l00030"></a>00030 <span class="keyword">enum</span>
<a name="l00031"></a>00031 {
<a name="l00032"></a>00032 EPanicAlreadyActive=1000,
<a name="l00033"></a>00033 };
<a name="l00034"></a>00034
<a name="l00035"></a>00035
<a name="l00037"></a>00037 <span class="comment">//</span>
<a name="l00038"></a>00038 <span class="comment">// -----> CTimedMessenger (definition)</span>
<a name="l00039"></a>00039 <span class="comment">//</span>
<a name="l00041"></a>00041 <span class="comment"></span><span class="keyword">class </span>CTimedMessenger : <span class="keyword">public</span> CTimer
<a name="l00042"></a>00042 {
<a name="l00043"></a>00043 <span class="keyword">public</span>:
<a name="l00044"></a>00044 <span class="comment">// Construction</span>
<a name="l00045"></a>00045 CTimedMessenger();
<a name="l00046"></a>00046 <span class="comment">// Destruction</span>
<a name="l00047"></a>00047 ~CTimedMessenger();
<a name="l00048"></a>00048
<a name="l00049"></a>00049 <span class="keyword">public</span>:
<a name="l00050"></a>00050 <span class="comment">// Static construction</span>
<a name="l00051"></a>00051 <span class="keyword">static</span> CTimedMessenger* NewLC(<span class="keyword">const</span> TDesC& aGreeting,
<a name="l00052"></a>00052 TInt aTicksRequested,
<a name="l00053"></a>00053 TInt aTicksInterval
<a name="l00054"></a>00054 );
<a name="l00055"></a>00055 <span class="keyword">static</span> CTimedMessenger* NewL(<span class="keyword">const</span> TDesC& aGreeting,
<a name="l00056"></a>00056 TInt aTicksRequested,
<a name="l00057"></a>00057 TInt aTicksInterval
<a name="l00058"></a>00058 );
<a name="l00059"></a>00059
<a name="l00060"></a>00060 <span class="keyword">public</span>:
<a name="l00061"></a>00061 <span class="comment">// Second phase construction</span>
<a name="l00062"></a>00062 <span class="keywordtype">void</span> ConstructL(<span class="keyword">const</span> TDesC& aGreeting,
<a name="l00063"></a>00063 TInt aTicksRequested,
<a name="l00064"></a>00064 TInt aTicksInterval
<a name="l00065"></a>00065 );
<a name="l00066"></a>00066
<a name="l00067"></a>00067 <span class="comment">// issue request</span>
<a name="l00068"></a>00068 <span class="keywordtype">void</span> IssueRequest();
<a name="l00069"></a>00069
<a name="l00070"></a>00070 <span class="comment">// Cancel request</span>
<a name="l00071"></a>00071 <span class="comment">// Defined as pure virtual by CActive;</span>
<a name="l00072"></a>00072 <span class="comment">// implementation provided by this class.</span>
<a name="l00073"></a>00073 <span class="keywordtype">void</span> DoCancel();
<a name="l00074"></a>00074
<a name="l00075"></a>00075 <span class="comment">// service completed request.</span>
<a name="l00076"></a>00076 <span class="comment">// Defined as pure virtual by CActive;</span>
<a name="l00077"></a>00077 <span class="comment">// implementation provided by this class.</span>
<a name="l00078"></a>00078 <span class="keywordtype">void</span> RunL();
<a name="l00079"></a>00079
<a name="l00080"></a>00080 <span class="keyword">public</span>:
<a name="l00081"></a>00081 <span class="comment">// data members defined by this class</span>
<a name="l00082"></a>00082 TBufC<20> iGreeting; <span class="comment">// Text of the greeting.</span>
<a name="l00083"></a>00083 TInt iTicksRequested; <span class="comment">// Total number of greetings CTimedMessenger</span>
<a name="l00084"></a>00084 <span class="comment">// will emit.</span>
<a name="l00085"></a>00085 TInt iTicksInterval; <span class="comment">// Number of seconds between each greeting.</span>
<a name="l00086"></a>00086 TInt iTicksDone; <span class="comment">// Number of greetings issued so far.</span>
<a name="l00087"></a>00087 };
<a name="l00088"></a>00088
<a name="l00089"></a>00089
<a name="l00091"></a>00091 <span class="comment">//</span>
<a name="l00092"></a>00092 <span class="comment">// -----> CExampleScheduler (definition)</span>
<a name="l00093"></a>00093 <span class="comment">//</span>
<a name="l00095"></a>00095 <span class="comment"></span><span class="keyword">class </span>CExampleScheduler : <span class="keyword">public</span> CActiveScheduler
<a name="l00096"></a>00096 {
<a name="l00097"></a>00097 <span class="keyword">public</span>:
<a name="l00098"></a>00098 <span class="keywordtype">void</span> Error (TInt aError) <span class="keyword">const</span>;
<a name="l00099"></a>00099 };
<a name="l00100"></a>00100
<a name="l00101"></a>00101
<a name="l00103"></a>00103 <span class="comment">//</span>
<a name="l00104"></a>00104 <span class="comment">// -----> CActiveConsole (definition)</span>
<a name="l00105"></a>00105 <span class="comment">//</span>
<a name="l00106"></a>00106 <span class="comment">// An abstract class which provides the facility to issue key requests. </span>
<a name="l00107"></a>00107 <span class="comment">//</span>
<a name="l00109"></a>00109 <span class="comment"></span><span class="keyword">class </span>CActiveConsole : <span class="keyword">public</span> CActive
<a name="l00110"></a>00110 {
<a name="l00111"></a>00111 <span class="keyword">public</span>:
<a name="l00112"></a>00112 <span class="comment">// Construction</span>
<a name="l00113"></a>00113 CActiveConsole(CConsoleBase* aConsole);
<a name="l00114"></a>00114 <span class="keywordtype">void</span> ConstructL();
<a name="l00115"></a>00115
<a name="l00116"></a>00116 <span class="comment">// Destruction</span>
<a name="l00117"></a>00117 ~CActiveConsole();
<a name="l00118"></a>00118
<a name="l00119"></a>00119 <span class="comment">// Issue request</span>
<a name="l00120"></a>00120 <span class="keywordtype">void</span> RequestCharacter();
<a name="l00121"></a>00121
<a name="l00122"></a>00122 <span class="comment">// Cancel request.</span>
<a name="l00123"></a>00123 <span class="comment">// Defined as pure virtual by CActive;</span>
<a name="l00124"></a>00124 <span class="comment">// implementation provided by this class.</span>
<a name="l00125"></a>00125 <span class="keywordtype">void</span> DoCancel();
<a name="l00126"></a>00126
<a name="l00127"></a>00127 <span class="comment">// Service completed request.</span>
<a name="l00128"></a>00128 <span class="comment">// Defined as pure virtual by CActive;</span>
<a name="l00129"></a>00129 <span class="comment">// implementation provided by this class,</span>
<a name="l00130"></a>00130 <span class="keywordtype">void</span> RunL();
<a name="l00131"></a>00131
<a name="l00132"></a>00132 <span class="comment">// Called from RunL() - an implementation must be provided</span>
<a name="l00133"></a>00133 <span class="comment">// by derived classes to handle the completed request</span>
<a name="l00134"></a>00134 <span class="keyword">virtual</span> <span class="keywordtype">void</span> ProcessKeyPress(TChar aChar) = 0;
<a name="l00135"></a>00135
<a name="l00136"></a>00136 <span class="keyword">protected</span>:
<a name="l00137"></a>00137 <span class="comment">// Data members defined by this class</span>
<a name="l00138"></a>00138 CConsoleBase* iConsole; <span class="comment">// A console for reading from</span>
<a name="l00139"></a>00139 };
<a name="l00140"></a>00140
<a name="l00141"></a>00141
<a name="l00143"></a>00143 <span class="comment">//</span>
<a name="l00144"></a>00144 <span class="comment">// -----> CWriteKeyProcessor (definition)</span>
<a name="l00145"></a>00145 <span class="comment">//</span>
<a name="l00146"></a>00146 <span class="comment">// This class is derived from CActiveConsole. </span>
<a name="l00147"></a>00147 <span class="comment">// Request handling: accepts input from the keyboard and outputs it </span>
<a name="l00148"></a>00148 <span class="comment">// to the console.</span>
<a name="l00149"></a>00149 <span class="comment">//</span>
<a name="l00151"></a>00151 <span class="comment"></span><span class="keyword">class </span>CWriteKeyProcessor : <span class="keyword">public</span> CActiveConsole
<a name="l00152"></a>00152 {
<a name="l00153"></a>00153 <span class="keyword">public</span>:
<a name="l00154"></a>00154 <span class="comment">// Construction</span>
<a name="l00155"></a>00155 CWriteKeyProcessor(CConsoleBase* aConsole);
<a name="l00156"></a>00156
<a name="l00157"></a>00157 <span class="keyword">public</span>:
<a name="l00158"></a>00158 <span class="comment">// Static constuction</span>
<a name="l00159"></a>00159 <span class="keyword">static</span> CWriteKeyProcessor *NewLC (CConsoleBase* aConsole);
<a name="l00160"></a>00160 <span class="keyword">static</span> CWriteKeyProcessor *NewL(CConsoleBase* aConsole);
<a name="l00161"></a>00161
<a name="l00162"></a>00162 <span class="comment">// Service request</span>
<a name="l00163"></a>00163 <span class="keywordtype">void</span> ProcessKeyPress(TChar aChar);
<a name="l00164"></a>00164 };
<a name="l00165"></a>00165
<a name="l00166"></a>00166
<a name="l00168"></a>00168 <span class="comment">//</span>
<a name="l00169"></a>00169 <span class="comment">// -----> CTimedMessenger (implementation)</span>
<a name="l00170"></a>00170 <span class="comment">//</span>
<a name="l00172"></a>00172 <span class="comment"></span>CTimedMessenger::CTimedMessenger()
<a name="l00173"></a>00173 : CTimer(CActive::EPriorityStandard)
<a name="l00174"></a>00174 <span class="comment">// Construct zero-priority active object</span>
<a name="l00175"></a>00175 {};
<a name="l00176"></a>00176
<a name="l00177"></a>00177 CTimedMessenger* CTimedMessenger::NewLC(<span class="keyword">const</span> TDesC& aGreeting,
<a name="l00178"></a>00178 TInt aTicksRequested,
<a name="l00179"></a>00179 TInt aTicksInterval
<a name="l00180"></a>00180 )
<a name="l00181"></a>00181 {
<a name="l00182"></a>00182 CTimedMessenger* <span class="keyword">self</span>=<span class="keyword">new</span> (ELeave) CTimedMessenger;
<a name="l00183"></a>00183 CleanupStack::PushL(<span class="keyword">self</span>);
<a name="l00184"></a>00184 <span class="keyword">self</span>->ConstructL(aGreeting,aTicksRequested,aTicksInterval);
<a name="l00185"></a>00185 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00186"></a>00186 }
<a name="l00187"></a>00187
<a name="l00188"></a>00188 CTimedMessenger* CTimedMessenger::NewL(<span class="keyword">const</span> TDesC& aGreeting,
<a name="l00189"></a>00189 TInt aTicksRequested,
<a name="l00190"></a>00190 TInt aTicksInterval
<a name="l00191"></a>00191 )
<a name="l00192"></a>00192 {
<a name="l00193"></a>00193 CTimedMessenger* <span class="keyword">self</span> = <a class="code" href="class_c_thread_server.html#a7c41592480f2c412599c332f52a61347">NewLC</a>(aGreeting,aTicksRequested,aTicksInterval);
<a name="l00194"></a>00194 CleanupStack::Pop();
<a name="l00195"></a>00195 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00196"></a>00196 }
<a name="l00197"></a>00197
<a name="l00198"></a>00198 <span class="keywordtype">void</span> CTimedMessenger::ConstructL(<span class="keyword">const</span> TDesC& aGreeting,
<a name="l00199"></a>00199 TInt aTicksRequested,
<a name="l00200"></a>00200 TInt aTicksInterval
<a name="l00201"></a>00201 )
<a name="l00202"></a>00202 {
<a name="l00203"></a>00203 <span class="comment">// Base class second-phase construction.</span>
<a name="l00204"></a>00204 CTimer::ConstructL();
<a name="l00205"></a>00205 <span class="comment">// Set members from arguments</span>
<a name="l00206"></a>00206 iGreeting = aGreeting; <span class="comment">// Set greeting text.</span>
<a name="l00207"></a>00207 iTicksRequested = aTicksRequested; <span class="comment">// Ticks requested</span>
<a name="l00208"></a>00208 iTicksInterval = aTicksInterval; <span class="comment">// Interval between ticks</span>
<a name="l00209"></a>00209 <span class="comment">// Add active object to active scheduler</span>
<a name="l00210"></a>00210 CActiveScheduler::Add(<span class="keyword">this</span>);
<a name="l00211"></a>00211 }
<a name="l00212"></a>00212
<a name="l00213"></a>00213
<a name="l00214"></a>00214 CTimedMessenger::~CTimedMessenger()
<a name="l00215"></a>00215 {
<a name="l00216"></a>00216 <span class="comment">// Make sure we're cancelled</span>
<a name="l00217"></a>00217 Cancel();
<a name="l00218"></a>00218 }
<a name="l00219"></a>00219
<a name="l00220"></a>00220 <span class="keywordtype">void</span> CTimedMessenger::DoCancel()
<a name="l00221"></a>00221 {
<a name="l00222"></a>00222 <span class="comment">// Base class</span>
<a name="l00223"></a>00223 CTimer::DoCancel();
<a name="l00224"></a>00224 <span class="comment">// Reset this variable - needed if the object is re-activated later</span>
<a name="l00225"></a>00225 iTicksDone = 0;
<a name="l00226"></a>00226 <span class="comment">// Tell user</span>
<a name="l00227"></a>00227 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KMsgCancelled,<span class="stringliteral">"Outstanding Messenger request cancelled\n"</span>);
<a name="l00228"></a>00228 console->Printf(KMsgCancelled);
<a name="l00229"></a>00229 }
<a name="l00230"></a>00230
<a name="l00231"></a>00231 <span class="keywordtype">void</span> CTimedMessenger::IssueRequest()
<a name="l00232"></a>00232 {
<a name="l00233"></a>00233 <span class="comment">// There should never be an outstanding request at this point.</span>
<a name="l00234"></a>00234 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KMsgAlreadyActive,<span class="stringliteral">"Is already Active"</span>);
<a name="l00235"></a>00235 __ASSERT_ALWAYS(!IsActive(),User::Panic(KMsgAlreadyActive,EPanicAlreadyActive));
<a name="l00236"></a>00236 <span class="comment">// Request another wait</span>
<a name="l00237"></a>00237 CTimer::After( iTicksInterval*1000000);
<a name="l00238"></a>00238 }
<a name="l00239"></a>00239
<a name="l00240"></a>00240 <span class="keywordtype">void</span> CTimedMessenger::RunL()
<a name="l00241"></a>00241 {
<a name="l00242"></a>00242 <span class="comment">// Handle request completion</span>
<a name="l00243"></a>00243 <span class="comment">// One more tick done</span>
<a name="l00244"></a>00244 iTicksDone++;
<a name="l00245"></a>00245 <span class="comment">// Print greeting</span>
<a name="l00246"></a>00246 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KFormatString1,<span class="stringliteral">"%S \n"</span>);
<a name="l00247"></a>00247 console->Printf(KFormatString1,&iGreeting);
<a name="l00248"></a>00248 <span class="comment">// Issue new request, or stop if we have reached the limit</span>
<a name="l00249"></a>00249 <span class="keywordflow">if</span> (iTicksDone < iTicksRequested)
<a name="l00250"></a>00250 {
<a name="l00251"></a>00251 IssueRequest();
<a name="l00252"></a>00252 }
<a name="l00253"></a>00253 <span class="keywordflow">else</span>
<a name="l00254"></a>00254 {
<a name="l00255"></a>00255 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KMsgFinished,<span class="stringliteral">"Messenger finished \n"</span>);
<a name="l00256"></a>00256 console->Printf(KMsgFinished);
<a name="l00257"></a>00257 <span class="comment">// Reset this variable - needed if the object is re-activated later</span>
<a name="l00258"></a>00258 iTicksDone=0;
<a name="l00259"></a>00259 <span class="comment">// Can now stop the active scheduler</span>
<a name="l00260"></a>00260 CActiveScheduler::Stop();
<a name="l00261"></a>00261 }
<a name="l00262"></a>00262 }
<a name="l00263"></a>00263
<a name="l00264"></a>00264
<a name="l00266"></a>00266 <span class="comment">//</span>
<a name="l00267"></a>00267 <span class="comment">// -----> CExampleScheduler (implementation)</span>
<a name="l00268"></a>00268 <span class="comment">//</span>
<a name="l00270"></a>00270 <span class="comment"></span><span class="keywordtype">void</span> CExampleScheduler::Error(TInt aError)<span class="keyword"> const</span>
<a name="l00271"></a>00271 <span class="keyword"> </span>{
<a name="l00272"></a>00272 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KMsgSchedErr,<span class="stringliteral">"CExampleScheduler-error"</span>);
<a name="l00273"></a>00273 User::Panic(KMsgSchedErr,aError);
<a name="l00274"></a>00274 }
<a name="l00275"></a>00275
<a name="l00276"></a>00276
<a name="l00278"></a>00278 <span class="comment">//</span>
<a name="l00279"></a>00279 <span class="comment">// -----> CActiveConsole (implementation)</span>
<a name="l00280"></a>00280 <span class="comment">//</span>
<a name="l00282"></a>00282 <span class="comment"></span>CActiveConsole::CActiveConsole( CConsoleBase* aConsole)
<a name="l00283"></a>00283 : CActive(CActive::EPriorityUserInput)
<a name="l00284"></a>00284 <span class="comment">// Construct high-priority active object</span>
<a name="l00285"></a>00285 {
<a name="l00286"></a>00286 iConsole = aConsole;
<a name="l00287"></a>00287 }
<a name="l00288"></a>00288
<a name="l00289"></a>00289 <span class="keywordtype">void</span> CActiveConsole::ConstructL()
<a name="l00290"></a>00290 {
<a name="l00291"></a>00291 <span class="comment">// Add to active scheduler</span>
<a name="l00292"></a>00292 CActiveScheduler::Add(<span class="keyword">this</span>);
<a name="l00293"></a>00293 }
<a name="l00294"></a>00294
<a name="l00295"></a>00295 CActiveConsole::~CActiveConsole()
<a name="l00296"></a>00296 {
<a name="l00297"></a>00297 <span class="comment">// Make sure we're cancelled</span>
<a name="l00298"></a>00298 Cancel();
<a name="l00299"></a>00299 }
<a name="l00300"></a>00300
<a name="l00301"></a>00301 <span class="keywordtype">void</span> CActiveConsole::DoCancel()
<a name="l00302"></a>00302 {
<a name="l00303"></a>00303 iConsole->ReadCancel();
<a name="l00304"></a>00304 }
<a name="l00305"></a>00305
<a name="l00306"></a>00306 <span class="keywordtype">void</span> CActiveConsole::RunL()
<a name="l00307"></a>00307 {
<a name="l00308"></a>00308 <span class="comment">// Handle completed request</span>
<a name="l00309"></a>00309 ProcessKeyPress(TChar(iConsole->KeyCode()));
<a name="l00310"></a>00310 }
<a name="l00311"></a>00311
<a name="l00312"></a>00312 <span class="keywordtype">void</span> CActiveConsole::RequestCharacter()
<a name="l00313"></a>00313 {
<a name="l00314"></a>00314 <span class="comment">// A request is issued to the CConsoleBase to accept a</span>
<a name="l00315"></a>00315 <span class="comment">// character from the keyboard.</span>
<a name="l00316"></a>00316 iConsole->Read(iStatus);
<a name="l00317"></a>00317 SetActive();
<a name="l00318"></a>00318 }
<a name="l00319"></a>00319
<a name="l00320"></a>00320
<a name="l00322"></a>00322 <span class="comment">//</span>
<a name="l00323"></a>00323 <span class="comment">// -----> CWriteKeyProcessor (implementation)</span>
<a name="l00324"></a>00324 <span class="comment">//</span>
<a name="l00326"></a>00326 <span class="comment"></span>CWriteKeyProcessor::CWriteKeyProcessor(CConsoleBase* aConsole)
<a name="l00327"></a>00327 : CActiveConsole(aConsole)
<a name="l00328"></a>00328
<a name="l00329"></a>00329 {};
<a name="l00330"></a>00330
<a name="l00331"></a>00331 CWriteKeyProcessor* CWriteKeyProcessor::NewLC(CConsoleBase* aConsole)
<a name="l00332"></a>00332 {
<a name="l00333"></a>00333 CWriteKeyProcessor* <span class="keyword">self</span>=<span class="keyword">new</span> (ELeave) CWriteKeyProcessor(aConsole);
<a name="l00334"></a>00334 CleanupStack::PushL(<span class="keyword">self</span>);
<a name="l00335"></a>00335 <span class="keyword">self</span>->ConstructL();
<a name="l00336"></a>00336 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00337"></a>00337 }
<a name="l00338"></a>00338
<a name="l00339"></a>00339 CWriteKeyProcessor* CWriteKeyProcessor::NewL(CConsoleBase* aConsole)
<a name="l00340"></a>00340 {
<a name="l00341"></a>00341 CWriteKeyProcessor* <span class="keyword">self</span>=<a class="code" href="class_c_thread_server.html#a7c41592480f2c412599c332f52a61347">NewLC</a>(aConsole);
<a name="l00342"></a>00342 CleanupStack::Pop();
<a name="l00343"></a>00343 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00344"></a>00344 }
<a name="l00345"></a>00345
<a name="l00346"></a>00346 <span class="keywordtype">void</span> CWriteKeyProcessor::ProcessKeyPress(TChar aChar)
<a name="l00347"></a>00347 {
<a name="l00348"></a>00348 <span class="comment">// "Esc" character prints a new line and stops the scheduler</span>
<a name="l00349"></a>00349 <span class="keywordflow">if</span> (aChar == EKeyEscape)
<a name="l00350"></a>00350 {
<a name="l00351"></a>00351 iConsole->Printf(KTextEsc);
<a name="l00352"></a>00352 CActiveScheduler::Stop();
<a name="l00353"></a>00353 <span class="keywordflow">return</span>;
<a name="l00354"></a>00354 }
<a name="l00355"></a>00355
<a name="l00356"></a>00356 <span class="comment">// "Enter" prints a new line character</span>
<a name="l00357"></a>00357 <span class="comment">// An alphabetic or space is printed as a character;</span>
<a name="l00358"></a>00358 <span class="comment">// anything else is printed as an integer.</span>
<a name="l00359"></a>00359 <span class="keywordflow">if</span> (aChar == EKeyEnter)
<a name="l00360"></a>00360 iConsole->Printf(KTextEsc);
<a name="l00361"></a>00361 <span class="keywordflow">else</span>
<a name="l00362"></a>00362 {
<a name="l00363"></a>00363 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KFormatString2,<span class="stringliteral">"%c"</span>);
<a name="l00364"></a>00364 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KFormatString3,<span class="stringliteral">"%d"</span>);
<a name="l00365"></a>00365 <span class="keywordflow">if</span> (aChar.IsAlphaDigit()|| aChar.IsSpace())
<a name="l00366"></a>00366 iConsole->Printf(KFormatString2,TUint(aChar));
<a name="l00367"></a>00367 <span class="keywordflow">else</span>
<a name="l00368"></a>00368 iConsole->Printf(KFormatString3,TUint(aChar));
<a name="l00369"></a>00369 }
<a name="l00370"></a>00370
<a name="l00371"></a>00371 <span class="comment">// Issue another request </span>
<a name="l00372"></a>00372 RequestCharacter();
<a name="l00373"></a>00373 }
<a name="l00374"></a>00374
<a name="l00375"></a>00375
<a name="l00377"></a>00377 <span class="comment">//</span>
<a name="l00378"></a>00378 <span class="comment">// -----> CMessageKeyProcessor (definition)</span>
<a name="l00379"></a>00379 <span class="comment">//</span>
<a name="l00380"></a>00380 <span class="comment">// This class is derived from CActiveConsole. </span>
<a name="l00381"></a>00381 <span class="comment">// Request handling:</span>
<a name="l00382"></a>00382 <span class="comment">// if key is "m", a message timer request is issued.</span>
<a name="l00383"></a>00383 <span class="comment">// if key is "c", any outstanding message timer request is cancelled.</span>
<a name="l00384"></a>00384 <span class="comment">// If key is ESC, the wait loop is terminated.</span>
<a name="l00385"></a>00385 <span class="comment">//</span>
<a name="l00387"></a>00387 <span class="comment"></span><span class="keyword">class </span>CMessageKeyProcessor : <span class="keyword">public</span> CActiveConsole
<a name="l00388"></a>00388 {
<a name="l00389"></a>00389 <span class="keyword">public</span>:
<a name="l00390"></a>00390 <span class="comment">// Construction</span>
<a name="l00391"></a>00391 CMessageKeyProcessor(CConsoleBase* aConsole, CTimedMessenger* iMessenger);
<a name="l00392"></a>00392 <span class="keywordtype">void</span> ConstructL();
<a name="l00393"></a>00393
<a name="l00394"></a>00394 <span class="keyword">public</span>:
<a name="l00395"></a>00395 <span class="comment">// Static construction</span>
<a name="l00396"></a>00396 <span class="keyword">static</span> CMessageKeyProcessor* NewLC(CConsoleBase* aConsole,
<a name="l00397"></a>00397 CTimedMessenger* iMessenger
<a name="l00398"></a>00398 );
<a name="l00399"></a>00399 <span class="keyword">static</span> CMessageKeyProcessor* NewL(CConsoleBase* aConsole,
<a name="l00400"></a>00400 CTimedMessenger* iMessenger
<a name="l00401"></a>00401 );
<a name="l00402"></a>00402
<a name="l00403"></a>00403 <span class="keyword">public</span>:
<a name="l00404"></a>00404 <span class="comment">// service request</span>
<a name="l00405"></a>00405 <span class="keywordtype">void</span> ProcessKeyPress(TChar aChar);
<a name="l00406"></a>00406
<a name="l00407"></a>00407 <span class="keyword">private</span>:
<a name="l00408"></a>00408 <span class="comment">// Data members defined by this class</span>
<a name="l00409"></a>00409 CTimedMessenger* iMessenger;
<a name="l00410"></a>00410 };
<a name="l00411"></a>00411
<a name="l00413"></a>00413 <span class="comment">//</span>
<a name="l00414"></a>00414 <span class="comment">// -----> CMessageKeyProcessor (implementation)</span>
<a name="l00415"></a>00415 <span class="comment">//</span>
<a name="l00417"></a>00417 <span class="comment"></span>CMessageKeyProcessor::CMessageKeyProcessor(CConsoleBase* aConsole,
<a name="l00418"></a>00418 CTimedMessenger* aMessenger
<a name="l00419"></a>00419 )
<a name="l00420"></a>00420 : CActiveConsole(aConsole)
<a name="l00421"></a>00421 <span class="comment">// construct zero-priority active object</span>
<a name="l00422"></a>00422 {
<a name="l00423"></a>00423 iMessenger = aMessenger;
<a name="l00424"></a>00424 }
<a name="l00425"></a>00425
<a name="l00426"></a>00426 CMessageKeyProcessor* CMessageKeyProcessor::NewLC(CConsoleBase* aConsole,
<a name="l00427"></a>00427 CTimedMessenger* aMessenger
<a name="l00428"></a>00428 )
<a name="l00429"></a>00429 {
<a name="l00430"></a>00430 CMessageKeyProcessor* <span class="keyword">self</span>=<span class="keyword">new</span> (ELeave) CMessageKeyProcessor(aConsole,
<a name="l00431"></a>00431 aMessenger
<a name="l00432"></a>00432 );
<a name="l00433"></a>00433 CleanupStack::PushL(<span class="keyword">self</span>);
<a name="l00434"></a>00434 <span class="keyword">self</span>->ConstructL();
<a name="l00435"></a>00435 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00436"></a>00436 }
<a name="l00437"></a>00437
<a name="l00438"></a>00438 CMessageKeyProcessor* CMessageKeyProcessor::NewL(CConsoleBase* aConsole,
<a name="l00439"></a>00439 CTimedMessenger* aMessenger
<a name="l00440"></a>00440 )
<a name="l00441"></a>00441 {
<a name="l00442"></a>00442 CMessageKeyProcessor* <span class="keyword">self</span> = <a class="code" href="class_c_thread_server.html#a7c41592480f2c412599c332f52a61347">NewLC</a>(aConsole, aMessenger);
<a name="l00443"></a>00443 CleanupStack::Pop();
<a name="l00444"></a>00444 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00445"></a>00445 }
<a name="l00446"></a>00446
<a name="l00447"></a>00447 <span class="keywordtype">void</span> CMessageKeyProcessor::ConstructL()
<a name="l00448"></a>00448 {
<a name="l00449"></a>00449 <span class="comment">// Add to active scheduler</span>
<a name="l00450"></a>00450 CActiveScheduler::Add(<span class="keyword">this</span>);
<a name="l00451"></a>00451 }
<a name="l00452"></a>00452
<a name="l00453"></a>00453 <span class="keywordtype">void</span> CMessageKeyProcessor::ProcessKeyPress(TChar aChar)
<a name="l00454"></a>00454 {
<a name="l00455"></a>00455 <span class="comment">// if key is ESC </span>
<a name="l00456"></a>00456 <span class="comment">// cancel any outstanding request</span>
<a name="l00457"></a>00457 <span class="comment">// stop the scheduler</span>
<a name="l00458"></a>00458 <span class="keywordflow">if</span> (aChar == EKeyEscape)
<a name="l00459"></a>00459 {
<a name="l00460"></a>00460 iMessenger->Cancel();
<a name="l00461"></a>00461 CActiveScheduler::Stop();
<a name="l00462"></a>00462 <span class="keywordflow">return</span>;
<a name="l00463"></a>00463 }
<a name="l00464"></a>00464
<a name="l00465"></a>00465 <span class="comment">// If key is "m" or "M"</span>
<a name="l00466"></a>00466 <span class="comment">// cancel any outstanding request</span>
<a name="l00467"></a>00467 <span class="comment">// reset the tick counter</span>
<a name="l00468"></a>00468 <span class="comment">// issue a message timer request.</span>
<a name="l00469"></a>00469 <span class="keywordflow">if</span> (aChar == <span class="charliteral">'m'</span> || aChar == <span class="charliteral">'M'</span>)
<a name="l00470"></a>00470 {
<a name="l00471"></a>00471 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KMsgStarting,<span class="stringliteral">"Starting Messenger.... \n"</span>);
<a name="l00472"></a>00472 iConsole->Printf(KMsgStarting);
<a name="l00473"></a>00473 iMessenger->Cancel();
<a name="l00474"></a>00474 iMessenger ->IssueRequest();
<a name="l00475"></a>00475 }
<a name="l00476"></a>00476
<a name="l00477"></a>00477 <span class="comment">// If key is "c" or "C" </span>
<a name="l00478"></a>00478 <span class="comment">// cancel any outstanding request </span>
<a name="l00479"></a>00479 <span class="keywordflow">if</span> (aChar == <span class="charliteral">'c'</span> || aChar == <span class="charliteral">'C'</span>)
<a name="l00480"></a>00480 iMessenger->Cancel();
<a name="l00481"></a>00481
<a name="l00482"></a>00482 <span class="comment">// Ask for another character.</span>
<a name="l00483"></a>00483 RequestCharacter();
<a name="l00484"></a>00484 }
<a name="l00485"></a>00485
<a name="l00486"></a>00486
<a name="l00488"></a>00488 <span class="comment">//</span>
<a name="l00489"></a>00489 <span class="comment">// Do the example</span>
<a name="l00490"></a>00490 <span class="comment">//</span>
<a name="l00492"></a>00492 <span class="comment"></span>LOCAL_C <span class="keywordtype">void</span> doExampleL()
<a name="l00493"></a>00493 {
<a name="l00494"></a>00494 <span class="comment">// Construct and install the active scheduler</span>
<a name="l00495"></a>00495 CExampleScheduler* exampleScheduler = <span class="keyword">new</span> (ELeave) CExampleScheduler;
<a name="l00496"></a>00496
<a name="l00497"></a>00497 <span class="comment">// Push onto the cleanup stack</span>
<a name="l00498"></a>00498 CleanupStack::PushL(exampleScheduler);
<a name="l00499"></a>00499
<a name="l00500"></a>00500 <span class="comment">// Install as the active scheduler</span>
<a name="l00501"></a>00501 CActiveScheduler::Install(exampleScheduler);
<a name="l00502"></a>00502
<a name="l00503"></a>00503 <span class="comment">// Create a CTimedMessenger active object which will emit</span>
<a name="l00504"></a>00504 <span class="comment">// 3 messages with an interval of 2 seconds between messages.</span>
<a name="l00505"></a>00505 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KMsgGoodMorning,<span class="stringliteral">"Good Morning!"</span>);
<a name="l00506"></a>00506 CTimedMessenger* messenger = CTimedMessenger::NewLC(KMsgGoodMorning, 3, 2);
<a name="l00507"></a>00507
<a name="l00508"></a>00508 <span class="comment">// Create aCMessageKeyProcessor active object.</span>
<a name="l00509"></a>00509 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KMsgTitleA,<span class="stringliteral">"A single CKeyMessengerProcessor active object which contains a CMessageTimer.\n"</span>);
<a name="l00510"></a>00510 console->Printf(KMsgTitleA);
<a name="l00511"></a>00511 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KMsgTitleB,<span class="stringliteral">"Press 'm' to activate messenger; Press 'c' to cancel it.\nPress ESC to end.\n\n"</span>);
<a name="l00512"></a>00512 console->Printf(KMsgTitleB);
<a name="l00513"></a>00513 CMessageKeyProcessor* keyProcesser = CMessageKeyProcessor::NewLC(console,
<a name="l00514"></a>00514 messenger
<a name="l00515"></a>00515 );
<a name="l00516"></a>00516
<a name="l00517"></a>00517 <span class="comment">// Issue the first request</span>
<a name="l00518"></a>00518 keyProcesser->RequestCharacter();
<a name="l00519"></a>00519
<a name="l00520"></a>00520 <span class="comment">// Main part of the program is a wait loop</span>
<a name="l00521"></a>00521 CActiveScheduler::Start();
<a name="l00522"></a>00522
<a name="l00523"></a>00523 <span class="comment">// Remove from the cleanup stack and destroy:</span>
<a name="l00524"></a>00524 <span class="comment">// 1. the CTimedMessenger active object</span>
<a name="l00525"></a>00525 <span class="comment">// 2. the CMessageKeyProcessor active object.</span>
<a name="l00526"></a>00526 <span class="comment">// 3. exampleScheduler</span>
<a name="l00527"></a>00527 CleanupStack::PopAndDestroy(3);
<a name="l00528"></a>00528 }
<a name="l00529"></a>00529
</pre></div></div>
<hr size="1"/><address style="text-align: right;"><small>Generated by
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.2 </small></address>
</body>
</html>