Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_accept_input2_8cpp_source.html
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
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<h1>examples/Base/IPC/Async/AcceptInput2/AcceptInput2.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">// All keyboard requests are issued from the active scheduler.</span>
<a name="l00021"></a>00021 <span class="comment">//</span>
<a name="l00022"></a>00022
<a name="l00023"></a>00023
<a name="l00024"></a>00024 <span class="preprocessor">#include "CommonFramework.h"</span>
<a name="l00025"></a>00025
<a name="l00026"></a>00026 <span class="comment">//</span>
<a name="l00027"></a>00027 <span class="comment">// Common literal text</span>
<a name="l00028"></a>00028 <span class="comment">//</span>
<a name="l00029"></a>00029 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtNewLine,<span class="stringliteral">"\n"</span>);
<a name="l00030"></a>00030
<a name="l00031"></a>00031
<a name="l00032"></a>00032 <span class="comment">// panics</span>
<a name="l00033"></a>00033 <span class="keyword">enum</span>
<a name="l00034"></a>00034 {
<a name="l00035"></a>00035 EPanicAlreadyActive=1000,
<a name="l00036"></a>00036 };
<a name="l00037"></a>00037
<a name="l00038"></a>00038
<a name="l00040"></a>00040 <span class="comment">//</span>
<a name="l00041"></a>00041 <span class="comment">// -----> CTimedMessenger (definition)</span>
<a name="l00042"></a>00042 <span class="comment">//</span>
<a name="l00044"></a>00044 <span class="comment"></span><span class="keyword">class </span>CTimedMessenger : <span class="keyword">public</span> CTimer
<a name="l00045"></a>00045 {
<a name="l00046"></a>00046 <span class="keyword">public</span>:
<a name="l00047"></a>00047 <span class="comment">// Construction</span>
<a name="l00048"></a>00048 CTimedMessenger();
<a name="l00049"></a>00049 <span class="comment">// Destruction</span>
<a name="l00050"></a>00050 ~CTimedMessenger();
<a name="l00051"></a>00051
<a name="l00052"></a>00052 <span class="keyword">public</span>:
<a name="l00053"></a>00053 <span class="comment">// Static construction</span>
<a name="l00054"></a>00054 <span class="keyword">static</span> CTimedMessenger* NewLC(<span class="keyword">const</span> TDesC& aGreeting,
<a name="l00055"></a>00055 TInt aTicksRequested,
<a name="l00056"></a>00056 TInt aTicksInterval
<a name="l00057"></a>00057 );
<a name="l00058"></a>00058 <span class="keyword">static</span> CTimedMessenger* NewL(<span class="keyword">const</span> TDesC& aGreeting,
<a name="l00059"></a>00059 TInt aTicksRequested,
<a name="l00060"></a>00060 TInt aTicksInterval
<a name="l00061"></a>00061 );
<a name="l00062"></a>00062
<a name="l00063"></a>00063 <span class="keyword">public</span>:
<a name="l00064"></a>00064 <span class="comment">// Second phase construction</span>
<a name="l00065"></a>00065 <span class="keywordtype">void</span> ConstructL(<span class="keyword">const</span> TDesC& aGreeting,
<a name="l00066"></a>00066 TInt aTicksRequested,
<a name="l00067"></a>00067 TInt aTicksInterval
<a name="l00068"></a>00068 );
<a name="l00069"></a>00069
<a name="l00070"></a>00070 <span class="comment">// issue request</span>
<a name="l00071"></a>00071 <span class="keywordtype">void</span> IssueRequest();
<a name="l00072"></a>00072
<a name="l00073"></a>00073 <span class="comment">// Cancel request</span>
<a name="l00074"></a>00074 <span class="comment">// Defined as pure virtual by CActive;</span>
<a name="l00075"></a>00075 <span class="comment">// implementation provided by this class.</span>
<a name="l00076"></a>00076 <span class="keywordtype">void</span> DoCancel();
<a name="l00077"></a>00077
<a name="l00078"></a>00078 <span class="comment">// service completed request.</span>
<a name="l00079"></a>00079 <span class="comment">// Defined as pure virtual by CActive;</span>
<a name="l00080"></a>00080 <span class="comment">// implementation provided by this class.</span>
<a name="l00081"></a>00081 <span class="keywordtype">void</span> RunL();
<a name="l00082"></a>00082
<a name="l00083"></a>00083 <span class="keyword">public</span>:
<a name="l00084"></a>00084 <span class="comment">// data members defined by this class</span>
<a name="l00085"></a>00085 TBufC<20> iGreeting; <span class="comment">// Text of the greeting.</span>
<a name="l00086"></a>00086 TInt iTicksRequested; <span class="comment">// Total number of greetings CTimedMessenger</span>
<a name="l00087"></a>00087 <span class="comment">// will emit.</span>
<a name="l00088"></a>00088 TInt iTicksInterval; <span class="comment">// Number of seconds between each greeting.</span>
<a name="l00089"></a>00089 TInt iTicksDone; <span class="comment">// Number of greetings issued so far.</span>
<a name="l00090"></a>00090 };
<a name="l00091"></a>00091
<a name="l00092"></a>00092
<a name="l00094"></a>00094 <span class="comment">//</span>
<a name="l00095"></a>00095 <span class="comment">// -----> CExampleScheduler (definition)</span>
<a name="l00096"></a>00096 <span class="comment">//</span>
<a name="l00098"></a>00098 <span class="comment"></span><span class="keyword">class </span>CActiveConsole;
<a name="l00099"></a>00099 <span class="keyword">class </span>CExampleScheduler : <span class="keyword">public</span> CActiveScheduler
<a name="l00100"></a>00100 {
<a name="l00101"></a>00101 <span class="keyword">public</span>:
<a name="l00102"></a>00102 <span class="keywordtype">void</span> Error (TInt aError) <span class="keyword">const</span>;
<a name="l00103"></a>00103 <span class="keywordtype">void</span> WaitForAnyRequest();
<a name="l00104"></a>00104 <span class="keywordtype">void</span> SetActiveObject(CActiveConsole* aActiveConsole);
<a name="l00105"></a>00105 <span class="keyword">private</span>:
<a name="l00106"></a>00106 <span class="comment">// data members defined for this class</span>
<a name="l00107"></a>00107 CActiveConsole* iActiveConsole;
<a name="l00108"></a>00108 };
<a name="l00109"></a>00109
<a name="l00110"></a>00110
<a name="l00112"></a>00112 <span class="comment">//</span>
<a name="l00113"></a>00113 <span class="comment">// -----> CActiveConsole (definition)</span>
<a name="l00114"></a>00114 <span class="comment">//</span>
<a name="l00115"></a>00115 <span class="comment">// An abstract class which provides the facility to issue key requests. </span>
<a name="l00116"></a>00116 <span class="comment">//</span>
<a name="l00118"></a>00118 <span class="comment"></span><span class="keyword">class </span>CActiveConsole : <span class="keyword">public</span> CActive
<a name="l00119"></a>00119 {
<a name="l00120"></a>00120 <span class="keyword">public</span>:
<a name="l00121"></a>00121 <span class="comment">// Construction</span>
<a name="l00122"></a>00122 CActiveConsole(CConsoleBase* aConsole);
<a name="l00123"></a>00123 <span class="keywordtype">void</span> ConstructL();
<a name="l00124"></a>00124
<a name="l00125"></a>00125 <span class="comment">// Destruction</span>
<a name="l00126"></a>00126 ~CActiveConsole();
<a name="l00127"></a>00127
<a name="l00128"></a>00128 <span class="comment">// Issue request</span>
<a name="l00129"></a>00129 <span class="keywordtype">void</span> RequestCharacter();
<a name="l00130"></a>00130
<a name="l00131"></a>00131 <span class="comment">// Cancel request.</span>
<a name="l00132"></a>00132 <span class="comment">// Defined as pure virtual by CActive;</span>
<a name="l00133"></a>00133 <span class="comment">// implementation provided by this class.</span>
<a name="l00134"></a>00134 <span class="keywordtype">void</span> DoCancel();
<a name="l00135"></a>00135
<a name="l00136"></a>00136 <span class="comment">// Service completed request.</span>
<a name="l00137"></a>00137 <span class="comment">// Defined as pure virtual by CActive;</span>
<a name="l00138"></a>00138 <span class="comment">// implementation provided by this class,</span>
<a name="l00139"></a>00139 <span class="keywordtype">void</span> RunL();
<a name="l00140"></a>00140
<a name="l00141"></a>00141 <span class="comment">// Called from RunL() - an implementation must be provided</span>
<a name="l00142"></a>00142 <span class="comment">// by derived classes to handle the completed request</span>
<a name="l00143"></a>00143 <span class="keyword">virtual</span> <span class="keywordtype">void</span> ProcessKeyPress(TChar aChar) = 0;
<a name="l00144"></a>00144
<a name="l00145"></a>00145 <span class="keyword">protected</span>:
<a name="l00146"></a>00146 <span class="comment">// Data members defined by this class</span>
<a name="l00147"></a>00147 CConsoleBase* iConsole; <span class="comment">// A console for reading from</span>
<a name="l00148"></a>00148 };
<a name="l00149"></a>00149
<a name="l00150"></a>00150
<a name="l00152"></a>00152 <span class="comment">//</span>
<a name="l00153"></a>00153 <span class="comment">// -----> CWriteKeyProcessor (definition)</span>
<a name="l00154"></a>00154 <span class="comment">//</span>
<a name="l00155"></a>00155 <span class="comment">// This class is derived from CActiveConsole. </span>
<a name="l00156"></a>00156 <span class="comment">// Request handling: accepts input from the keyboard and outputs it </span>
<a name="l00157"></a>00157 <span class="comment">// to the console.</span>
<a name="l00158"></a>00158 <span class="comment">//</span>
<a name="l00160"></a>00160 <span class="comment"></span><span class="keyword">class </span>CWriteKeyProcessor : <span class="keyword">public</span> CActiveConsole
<a name="l00161"></a>00161 {
<a name="l00162"></a>00162 <span class="keyword">public</span>:
<a name="l00163"></a>00163 <span class="comment">// Construction</span>
<a name="l00164"></a>00164 CWriteKeyProcessor(CConsoleBase* aConsole);
<a name="l00165"></a>00165
<a name="l00166"></a>00166 <span class="keyword">public</span>:
<a name="l00167"></a>00167 <span class="comment">// Static constuction</span>
<a name="l00168"></a>00168 <span class="keyword">static</span> CWriteKeyProcessor *NewLC (CConsoleBase* aConsole);
<a name="l00169"></a>00169 <span class="keyword">static</span> CWriteKeyProcessor *NewL(CConsoleBase* aConsole);
<a name="l00170"></a>00170
<a name="l00171"></a>00171 <span class="comment">// Service request</span>
<a name="l00172"></a>00172 <span class="keywordtype">void</span> ProcessKeyPress(TChar aChar);
<a name="l00173"></a>00173 };
<a name="l00174"></a>00174
<a name="l00175"></a>00175
<a name="l00177"></a>00177 <span class="comment">//</span>
<a name="l00178"></a>00178 <span class="comment">// -----> CTimedMessenger (implementation)</span>
<a name="l00179"></a>00179 <span class="comment">//</span>
<a name="l00181"></a>00181 <span class="comment"></span>CTimedMessenger::CTimedMessenger()
<a name="l00182"></a>00182 : CTimer(CActive::EPriorityStandard)
<a name="l00183"></a>00183 <span class="comment">// Construct standard-priority active object</span>
<a name="l00184"></a>00184 {};
<a name="l00185"></a>00185
<a name="l00186"></a>00186 CTimedMessenger* CTimedMessenger::NewLC(<span class="keyword">const</span> TDesC& aGreeting,
<a name="l00187"></a>00187 TInt aTicksRequested,
<a name="l00188"></a>00188 TInt aTicksInterval
<a name="l00189"></a>00189 )
<a name="l00190"></a>00190 {
<a name="l00191"></a>00191 CTimedMessenger* <span class="keyword">self</span>=<span class="keyword">new</span> (ELeave) CTimedMessenger;
<a name="l00192"></a>00192 CleanupStack::PushL(<span class="keyword">self</span>);
<a name="l00193"></a>00193 <span class="keyword">self</span>->ConstructL(aGreeting,aTicksRequested,aTicksInterval);
<a name="l00194"></a>00194 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00195"></a>00195 }
<a name="l00196"></a>00196
<a name="l00197"></a>00197 CTimedMessenger* CTimedMessenger::NewL(<span class="keyword">const</span> TDesC& aGreeting,
<a name="l00198"></a>00198 TInt aTicksRequested,
<a name="l00199"></a>00199 TInt aTicksInterval
<a name="l00200"></a>00200 )
<a name="l00201"></a>00201 {
<a name="l00202"></a>00202 CTimedMessenger* <span class="keyword">self</span> = <a class="code" href="class_c_thread_server.html#a7c41592480f2c412599c332f52a61347">NewLC</a>(aGreeting,aTicksRequested,aTicksInterval);
<a name="l00203"></a>00203 CleanupStack::Pop();
<a name="l00204"></a>00204 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00205"></a>00205 }
<a name="l00206"></a>00206
<a name="l00207"></a>00207 <span class="keywordtype">void</span> CTimedMessenger::ConstructL(<span class="keyword">const</span> TDesC& aGreeting,
<a name="l00208"></a>00208 TInt aTicksRequested,
<a name="l00209"></a>00209 TInt aTicksInterval
<a name="l00210"></a>00210 )
<a name="l00211"></a>00211 {
<a name="l00212"></a>00212 <span class="comment">// Base class second-phase construction.</span>
<a name="l00213"></a>00213 CTimer::ConstructL();
<a name="l00214"></a>00214 <span class="comment">// Set members from arguments</span>
<a name="l00215"></a>00215 iGreeting = aGreeting; <span class="comment">// Set greeting text.</span>
<a name="l00216"></a>00216 iTicksRequested = aTicksRequested; <span class="comment">// Ticks requested</span>
<a name="l00217"></a>00217 iTicksInterval = aTicksInterval; <span class="comment">// Interval between ticks</span>
<a name="l00218"></a>00218 <span class="comment">// Add active object to active scheduler</span>
<a name="l00219"></a>00219 CActiveScheduler::Add(<span class="keyword">this</span>);
<a name="l00220"></a>00220 }
<a name="l00221"></a>00221
<a name="l00222"></a>00222
<a name="l00223"></a>00223 CTimedMessenger::~CTimedMessenger()
<a name="l00224"></a>00224 {
<a name="l00225"></a>00225 <span class="comment">// Make sure we're cancelled</span>
<a name="l00226"></a>00226 Cancel();
<a name="l00227"></a>00227 }
<a name="l00228"></a>00228
<a name="l00229"></a>00229 <span class="keywordtype">void</span> CTimedMessenger::DoCancel()
<a name="l00230"></a>00230 {
<a name="l00231"></a>00231 <span class="comment">// Base class</span>
<a name="l00232"></a>00232 CTimer::DoCancel();
<a name="l00233"></a>00233 <span class="comment">// Reset this variable - needed if the object is re-activated later</span>
<a name="l00234"></a>00234 iTicksDone = 0;
<a name="l00235"></a>00235 <span class="comment">// Tell user</span>
<a name="l00236"></a>00236 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtOutMessReqCancelled,<span class="stringliteral">"Outstanding Messenger request cancelled\n"</span>);
<a name="l00237"></a>00237 console->Printf(KTxtOutMessReqCancelled);
<a name="l00238"></a>00238 }
<a name="l00239"></a>00239
<a name="l00240"></a>00240 <span class="keywordtype">void</span> CTimedMessenger::IssueRequest()
<a name="l00241"></a>00241 {
<a name="l00242"></a>00242 <span class="comment">// There should never be an outstanding request at this point.</span>
<a name="l00243"></a>00243 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtIsAlreadyActive,<span class="stringliteral">"Is already Active"</span>);
<a name="l00244"></a>00244 __ASSERT_ALWAYS(!IsActive(),User::Panic(KTxtIsAlreadyActive,EPanicAlreadyActive));
<a name="l00245"></a>00245 <span class="comment">// Request another wait</span>
<a name="l00246"></a>00246 CTimer::After( iTicksInterval*1000000);
<a name="l00247"></a>00247 }
<a name="l00248"></a>00248
<a name="l00249"></a>00249 <span class="keywordtype">void</span> CTimedMessenger::RunL()
<a name="l00250"></a>00250 {
<a name="l00251"></a>00251 <span class="comment">// Handle request completion</span>
<a name="l00252"></a>00252 <span class="comment">// One more tick done</span>
<a name="l00253"></a>00253 iTicksDone++;
<a name="l00254"></a>00254 <span class="comment">// Print greeting</span>
<a name="l00255"></a>00255 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KFormat1,<span class="stringliteral">"%S \n"</span>);
<a name="l00256"></a>00256 console->Printf(KFormat1,&iGreeting);
<a name="l00257"></a>00257 <span class="comment">// Issue new request, or stop if we have reached the limit</span>
<a name="l00258"></a>00258 <span class="keywordflow">if</span> (iTicksDone < iTicksRequested)
<a name="l00259"></a>00259 {
<a name="l00260"></a>00260 IssueRequest();
<a name="l00261"></a>00261 }
<a name="l00262"></a>00262 <span class="keywordflow">else</span>
<a name="l00263"></a>00263 {
<a name="l00264"></a>00264 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtMessengerFinished,<span class="stringliteral">"Messenger finished \n"</span>);
<a name="l00265"></a>00265 console->Printf(KTxtMessengerFinished);
<a name="l00266"></a>00266 <span class="comment">// Reset this variable - needed if the object is re-activated later</span>
<a name="l00267"></a>00267 iTicksDone=0;
<a name="l00268"></a>00268 <span class="comment">// Can now stop the active scheduler</span>
<a name="l00269"></a>00269 CActiveScheduler::Stop();
<a name="l00270"></a>00270 }
<a name="l00271"></a>00271 }
<a name="l00272"></a>00272
<a name="l00273"></a>00273
<a name="l00275"></a>00275 <span class="comment">//</span>
<a name="l00276"></a>00276 <span class="comment">// -----> CExampleScheduler (implementation)</span>
<a name="l00277"></a>00277 <span class="comment">//</span>
<a name="l00279"></a>00279 <span class="comment"></span><span class="keywordtype">void</span> CExampleScheduler::Error(TInt aError)<span class="keyword"> const</span>
<a name="l00280"></a>00280 <span class="keyword"> </span>{
<a name="l00281"></a>00281 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtSchedulerError,<span class="stringliteral">"CExampleScheduler - error"</span>);
<a name="l00282"></a>00282 User::Panic(KTxtSchedulerError,aError);
<a name="l00283"></a>00283 }
<a name="l00284"></a>00284
<a name="l00285"></a>00285
<a name="l00286"></a>00286 <span class="keywordtype">void</span> CExampleScheduler::WaitForAnyRequest()
<a name="l00287"></a>00287 {
<a name="l00288"></a>00288 <span class="keywordflow">if</span> (!(iActiveConsole->IsActive()))
<a name="l00289"></a>00289 iActiveConsole->RequestCharacter();
<a name="l00290"></a>00290 CActiveScheduler::WaitForAnyRequest();
<a name="l00291"></a>00291 }
<a name="l00292"></a>00292
<a name="l00293"></a>00293 <span class="keywordtype">void</span> CExampleScheduler::SetActiveObject(CActiveConsole* aActiveConsole)
<a name="l00294"></a>00294 {
<a name="l00295"></a>00295 iActiveConsole = aActiveConsole;
<a name="l00296"></a>00296 }
<a name="l00297"></a>00297
<a name="l00298"></a>00298
<a name="l00300"></a>00300 <span class="comment">//</span>
<a name="l00301"></a>00301 <span class="comment">// -----> CActiveConsole (implementation)</span>
<a name="l00302"></a>00302 <span class="comment">//</span>
<a name="l00304"></a>00304 <span class="comment"></span>CActiveConsole::CActiveConsole( CConsoleBase* aConsole)
<a name="l00305"></a>00305 : CActive(CActive::EPriorityUserInput)
<a name="l00306"></a>00306 <span class="comment">// Construct high-priority active object</span>
<a name="l00307"></a>00307 {
<a name="l00308"></a>00308 iConsole = aConsole;
<a name="l00309"></a>00309 }
<a name="l00310"></a>00310
<a name="l00311"></a>00311 <span class="keywordtype">void</span> CActiveConsole::ConstructL()
<a name="l00312"></a>00312 {
<a name="l00313"></a>00313 <span class="comment">// Add to active scheduler</span>
<a name="l00314"></a>00314 CActiveScheduler::Add(<span class="keyword">this</span>);
<a name="l00315"></a>00315 }
<a name="l00316"></a>00316
<a name="l00317"></a>00317 CActiveConsole::~CActiveConsole()
<a name="l00318"></a>00318 {
<a name="l00319"></a>00319 <span class="comment">// Make sure we're cancelled</span>
<a name="l00320"></a>00320 Cancel();
<a name="l00321"></a>00321 }
<a name="l00322"></a>00322
<a name="l00323"></a>00323 <span class="keywordtype">void</span> CActiveConsole::DoCancel()
<a name="l00324"></a>00324 {
<a name="l00325"></a>00325 iConsole->ReadCancel();
<a name="l00326"></a>00326 }
<a name="l00327"></a>00327
<a name="l00328"></a>00328 <span class="keywordtype">void</span> CActiveConsole::RunL()
<a name="l00329"></a>00329 {
<a name="l00330"></a>00330 <span class="comment">// Handle completed request</span>
<a name="l00331"></a>00331 ProcessKeyPress(TChar(iConsole->KeyCode()));
<a name="l00332"></a>00332 }
<a name="l00333"></a>00333
<a name="l00334"></a>00334 <span class="keywordtype">void</span> CActiveConsole::RequestCharacter()
<a name="l00335"></a>00335 {
<a name="l00336"></a>00336 <span class="comment">// A request is issued to the CConsoleBase to accept a</span>
<a name="l00337"></a>00337 <span class="comment">// character from the keyboard.</span>
<a name="l00338"></a>00338 iConsole->Read(iStatus);
<a name="l00339"></a>00339 SetActive();
<a name="l00340"></a>00340 }
<a name="l00341"></a>00341
<a name="l00342"></a>00342
<a name="l00344"></a>00344 <span class="comment">//</span>
<a name="l00345"></a>00345 <span class="comment">// -----> CWriteKeyProcessor (implementation)</span>
<a name="l00346"></a>00346 <span class="comment">//</span>
<a name="l00348"></a>00348 <span class="comment"></span>CWriteKeyProcessor::CWriteKeyProcessor(CConsoleBase* aConsole)
<a name="l00349"></a>00349 : CActiveConsole(aConsole)
<a name="l00350"></a>00350 <span class="comment">// Construct zero-priority active object</span>
<a name="l00351"></a>00351 {};
<a name="l00352"></a>00352
<a name="l00353"></a>00353 CWriteKeyProcessor* CWriteKeyProcessor::NewLC(CConsoleBase* aConsole)
<a name="l00354"></a>00354 {
<a name="l00355"></a>00355 CWriteKeyProcessor* <span class="keyword">self</span>=<span class="keyword">new</span> (ELeave) CWriteKeyProcessor(aConsole);
<a name="l00356"></a>00356 CleanupStack::PushL(<span class="keyword">self</span>);
<a name="l00357"></a>00357 <span class="keyword">self</span>->ConstructL();
<a name="l00358"></a>00358 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00359"></a>00359 }
<a name="l00360"></a>00360
<a name="l00361"></a>00361 CWriteKeyProcessor* CWriteKeyProcessor::NewL(CConsoleBase* aConsole)
<a name="l00362"></a>00362 {
<a name="l00363"></a>00363 CWriteKeyProcessor* <span class="keyword">self</span>=<a class="code" href="class_c_thread_server.html#a7c41592480f2c412599c332f52a61347">NewLC</a>(aConsole);
<a name="l00364"></a>00364 CleanupStack::Pop();
<a name="l00365"></a>00365 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00366"></a>00366 }
<a name="l00367"></a>00367
<a name="l00368"></a>00368 <span class="keywordtype">void</span> CWriteKeyProcessor::ProcessKeyPress(TChar aChar)
<a name="l00369"></a>00369 {
<a name="l00370"></a>00370 <span class="comment">// "Esc" character prints a new line and stops the scheduler</span>
<a name="l00371"></a>00371 <span class="keywordflow">if</span> (aChar == EKeyEscape)
<a name="l00372"></a>00372 {
<a name="l00373"></a>00373 iConsole->Printf(KTxtNewLine);
<a name="l00374"></a>00374 CActiveScheduler::Stop();
<a name="l00375"></a>00375 <span class="keywordflow">return</span>;
<a name="l00376"></a>00376 }
<a name="l00377"></a>00377
<a name="l00378"></a>00378 <span class="comment">// "Enter" prints a new line character</span>
<a name="l00379"></a>00379 <span class="comment">// An alphabetic or space is printed as a character;</span>
<a name="l00380"></a>00380 <span class="comment">// anything else is printed as an integer.</span>
<a name="l00381"></a>00381 <span class="keywordflow">if</span> (aChar == EKeyEnter)
<a name="l00382"></a>00382 iConsole->Printf(KTxtNewLine);
<a name="l00383"></a>00383 <span class="keywordflow">else</span>
<a name="l00384"></a>00384 {
<a name="l00385"></a>00385 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KFormat2,<span class="stringliteral">"%c"</span>);
<a name="l00386"></a>00386 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KFormat3,<span class="stringliteral">"%d"</span>);
<a name="l00387"></a>00387 <span class="keywordflow">if</span> (aChar.IsAlphaDigit()|| aChar.IsSpace())
<a name="l00388"></a>00388
<a name="l00389"></a>00389 iConsole->Printf(KFormat2,TUint(aChar));
<a name="l00390"></a>00390 <span class="keywordflow">else</span>
<a name="l00391"></a>00391 iConsole->Printf(KFormat3,TUint(aChar));
<a name="l00392"></a>00392 }
<a name="l00393"></a>00393
<a name="l00394"></a>00394 <span class="comment">// Issue another request </span>
<a name="l00395"></a>00395 RequestCharacter();
<a name="l00396"></a>00396 }
<a name="l00397"></a>00397
<a name="l00398"></a>00398
<a name="l00400"></a>00400 <span class="comment">//</span>
<a name="l00401"></a>00401 <span class="comment">// -----> CMessageKeyProcessor (definition)</span>
<a name="l00402"></a>00402 <span class="comment">//</span>
<a name="l00403"></a>00403 <span class="comment">// This class is derived from CActiveConsole. </span>
<a name="l00404"></a>00404 <span class="comment">// Request handling:</span>
<a name="l00405"></a>00405 <span class="comment">// if key is "m", a message timer request is issued.</span>
<a name="l00406"></a>00406 <span class="comment">// if key is "c", any outstanding message timer request is cancelled.</span>
<a name="l00407"></a>00407 <span class="comment">// If key is ESC, the wait loop is terminated.</span>
<a name="l00408"></a>00408 <span class="comment">//</span>
<a name="l00410"></a>00410 <span class="comment"></span><span class="keyword">class </span>CMessageKeyProcessor : <span class="keyword">public</span> CActiveConsole
<a name="l00411"></a>00411 {
<a name="l00412"></a>00412 <span class="keyword">public</span>:
<a name="l00413"></a>00413 <span class="comment">// Construction</span>
<a name="l00414"></a>00414 CMessageKeyProcessor(CConsoleBase* aConsole, CTimedMessenger* iMessenger);
<a name="l00415"></a>00415 <span class="keywordtype">void</span> ConstructL();
<a name="l00416"></a>00416
<a name="l00417"></a>00417 <span class="keyword">public</span>:
<a name="l00418"></a>00418 <span class="comment">// Static construction</span>
<a name="l00419"></a>00419 <span class="keyword">static</span> CMessageKeyProcessor* NewLC(CConsoleBase* aConsole,
<a name="l00420"></a>00420 CTimedMessenger* iMessenger
<a name="l00421"></a>00421 );
<a name="l00422"></a>00422 <span class="keyword">static</span> CMessageKeyProcessor* NewL(CConsoleBase* aConsole,
<a name="l00423"></a>00423 CTimedMessenger* iMessenger
<a name="l00424"></a>00424 );
<a name="l00425"></a>00425
<a name="l00426"></a>00426 <span class="keyword">public</span>:
<a name="l00427"></a>00427 <span class="comment">// service request</span>
<a name="l00428"></a>00428 <span class="keywordtype">void</span> ProcessKeyPress(TChar aChar);
<a name="l00429"></a>00429
<a name="l00430"></a>00430 <span class="keyword">private</span>:
<a name="l00431"></a>00431 <span class="comment">// Data members defined by this class</span>
<a name="l00432"></a>00432 CTimedMessenger* iMessenger;
<a name="l00433"></a>00433 };
<a name="l00434"></a>00434
<a name="l00436"></a>00436 <span class="comment">//</span>
<a name="l00437"></a>00437 <span class="comment">// -----> CMessageKeyProcessor (implementation)</span>
<a name="l00438"></a>00438 <span class="comment">//</span>
<a name="l00440"></a>00440 <span class="comment"></span>CMessageKeyProcessor::CMessageKeyProcessor(CConsoleBase* aConsole,
<a name="l00441"></a>00441 CTimedMessenger* aMessenger
<a name="l00442"></a>00442 )
<a name="l00443"></a>00443 : CActiveConsole(aConsole)
<a name="l00444"></a>00444 <span class="comment">// construct zero-priority active object</span>
<a name="l00445"></a>00445 {
<a name="l00446"></a>00446 iMessenger = aMessenger;
<a name="l00447"></a>00447 }
<a name="l00448"></a>00448
<a name="l00449"></a>00449 CMessageKeyProcessor* CMessageKeyProcessor::NewLC(CConsoleBase* aConsole,
<a name="l00450"></a>00450 CTimedMessenger* aMessenger
<a name="l00451"></a>00451 )
<a name="l00452"></a>00452 {
<a name="l00453"></a>00453 CMessageKeyProcessor* <span class="keyword">self</span>=<span class="keyword">new</span> (ELeave) CMessageKeyProcessor(aConsole,
<a name="l00454"></a>00454 aMessenger
<a name="l00455"></a>00455 );
<a name="l00456"></a>00456 CleanupStack::PushL(<span class="keyword">self</span>);
<a name="l00457"></a>00457 <span class="keyword">self</span>->ConstructL();
<a name="l00458"></a>00458 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00459"></a>00459 }
<a name="l00460"></a>00460
<a name="l00461"></a>00461 CMessageKeyProcessor* CMessageKeyProcessor::NewL(CConsoleBase* aConsole,
<a name="l00462"></a>00462 CTimedMessenger* aMessenger
<a name="l00463"></a>00463 )
<a name="l00464"></a>00464 {
<a name="l00465"></a>00465 CMessageKeyProcessor* <span class="keyword">self</span> = <a class="code" href="class_c_thread_server.html#a7c41592480f2c412599c332f52a61347">NewLC</a>(aConsole, aMessenger);
<a name="l00466"></a>00466 CleanupStack::Pop();
<a name="l00467"></a>00467 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00468"></a>00468 }
<a name="l00469"></a>00469
<a name="l00470"></a>00470 <span class="keywordtype">void</span> CMessageKeyProcessor::ConstructL()
<a name="l00471"></a>00471 {
<a name="l00472"></a>00472 <span class="comment">// Add to active scheduler</span>
<a name="l00473"></a>00473 CActiveScheduler::Add(<span class="keyword">this</span>);
<a name="l00474"></a>00474 <span class="comment">// Make this the active object</span>
<a name="l00475"></a>00475 ((CExampleScheduler*)(CActiveScheduler::Current()))->SetActiveObject(<span class="keyword">this</span>);
<a name="l00476"></a>00476 }
<a name="l00477"></a>00477
<a name="l00478"></a>00478 <span class="keywordtype">void</span> CMessageKeyProcessor::ProcessKeyPress(TChar aChar)
<a name="l00479"></a>00479 {
<a name="l00480"></a>00480 <span class="comment">// if key is ESC </span>
<a name="l00481"></a>00481 <span class="comment">// cancel any outstanding request</span>
<a name="l00482"></a>00482 <span class="comment">// stop the scheduler</span>
<a name="l00483"></a>00483 <span class="keywordflow">if</span> (aChar == EKeyEscape)
<a name="l00484"></a>00484 {
<a name="l00485"></a>00485 iMessenger->Cancel();
<a name="l00486"></a>00486 CActiveScheduler::Stop();
<a name="l00487"></a>00487 <span class="keywordflow">return</span>;
<a name="l00488"></a>00488 }
<a name="l00489"></a>00489
<a name="l00490"></a>00490 <span class="comment">// If key is "m" or "M"</span>
<a name="l00491"></a>00491 <span class="comment">// cancel any outstanding request</span>
<a name="l00492"></a>00492 <span class="comment">// reset the tick counter</span>
<a name="l00493"></a>00493 <span class="comment">// issue a message timer request.</span>
<a name="l00494"></a>00494 <span class="keywordflow">if</span> (aChar == <span class="charliteral">'m'</span> || aChar == <span class="charliteral">'M'</span>)
<a name="l00495"></a>00495 {
<a name="l00496"></a>00496 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtStartingMess,<span class="stringliteral">"Starting Messenger.... \n"</span>);
<a name="l00497"></a>00497 iConsole->Printf(KTxtStartingMess);
<a name="l00498"></a>00498 iMessenger->Cancel();
<a name="l00499"></a>00499 iMessenger ->IssueRequest();
<a name="l00500"></a>00500 }
<a name="l00501"></a>00501
<a name="l00502"></a>00502 <span class="comment">// If key is "c" or "C" </span>
<a name="l00503"></a>00503 <span class="comment">// cancel any outstanding request </span>
<a name="l00504"></a>00504 <span class="keywordflow">if</span> (aChar == <span class="charliteral">'c'</span> || aChar == <span class="charliteral">'C'</span>)
<a name="l00505"></a>00505 iMessenger->Cancel();
<a name="l00506"></a>00506 }
<a name="l00507"></a>00507
<a name="l00508"></a>00508
<a name="l00510"></a>00510 <span class="comment">//</span>
<a name="l00511"></a>00511 <span class="comment">// Do the example</span>
<a name="l00512"></a>00512 <span class="comment">//</span>
<a name="l00514"></a>00514 <span class="comment"></span>LOCAL_C <span class="keywordtype">void</span> doExampleL()
<a name="l00515"></a>00515 {
<a name="l00516"></a>00516 <span class="comment">// Construct and install the active scheduler</span>
<a name="l00517"></a>00517 CExampleScheduler* exampleScheduler = <span class="keyword">new</span> (ELeave) CExampleScheduler;
<a name="l00518"></a>00518
<a name="l00519"></a>00519 <span class="comment">// Push onto the cleanup stack</span>
<a name="l00520"></a>00520 CleanupStack::PushL(exampleScheduler);
<a name="l00521"></a>00521
<a name="l00522"></a>00522 <span class="comment">// Install as the active scheduler</span>
<a name="l00523"></a>00523 CActiveScheduler::Install(exampleScheduler);
<a name="l00524"></a>00524
<a name="l00525"></a>00525 <span class="comment">// Create a CTimedMessenger active object which will emit</span>
<a name="l00526"></a>00526 <span class="comment">// 3 messages with an interval of 2 seconds between messages.</span>
<a name="l00527"></a>00527 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtGoodMorning,<span class="stringliteral">"Good Morning!"</span>);
<a name="l00528"></a>00528 CTimedMessenger* messenger = CTimedMessenger::NewLC(KTxtGoodMorning, 3, 2);
<a name="l00529"></a>00529
<a name="l00530"></a>00530 <span class="comment">// Create aCMessageKeyProcessor active object.</span>
<a name="l00531"></a>00531 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtMain1,<span class="stringliteral">"A single CKeyMessengerProcessor active object "</span>);
<a name="l00532"></a>00532 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtMain2,<span class="stringliteral">"Active scheduler renews request.\n"</span>);
<a name="l00533"></a>00533 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtMain3,<span class="stringliteral">"Press 'm' to activate messenger; Press 'c' to cancel it.\n"</span>);
<a name="l00534"></a>00534 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtMain4,<span class="stringliteral">"Press ESC to end.\n\n"</span>);
<a name="l00535"></a>00535 console->Printf(KTxtMain1);
<a name="l00536"></a>00536 console->Printf(KTxtMain2);
<a name="l00537"></a>00537 console->Printf(KTxtMain3);
<a name="l00538"></a>00538 console->Printf(KTxtMain4);
<a name="l00539"></a>00539 CMessageKeyProcessor::NewLC(console,messenger);
<a name="l00540"></a>00540
<a name="l00541"></a>00541 <span class="comment">// Main part of the program is a wait loop</span>
<a name="l00542"></a>00542 CActiveScheduler::Start();
<a name="l00543"></a>00543
<a name="l00544"></a>00544 <span class="comment">// Remove from the cleanup stack and destroy:</span>
<a name="l00545"></a>00545 <span class="comment">// 1. the CTimedMessenger active object</span>
<a name="l00546"></a>00546 <span class="comment">// 2. the CMessageKeyProcessor active object.</span>
<a name="l00547"></a>00547 <span class="comment">// 3. exampleScheduler</span>
<a name="l00548"></a>00548 CleanupStack::PopAndDestroy(3);
<a name="l00549"></a>00549 }
<a name="l00550"></a>00550
<a name="l00551"></a>00551
<a name="l00552"></a>00552
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