Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/longnumber_8cpp_source.html
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<h1>examples/Base/ArraysAndLists/linkedlist/sgllist/src/longnumber.cpp</h1><a href="longnumber_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright (c) 2008-2009 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">// Contains definition of functions defined in the CLongNumber class.</span>
<a name="l00015"></a>00015 <span class="comment">//</span>
<a name="l00016"></a>00016
<a name="l00017"></a>00017
<a name="l00018"></a>00018
<a name="l00023"></a>00023 <span class="preprocessor">#include "<a class="code" href="longnumber_8h.html">longnumber.h</a>"</span>
<a name="l00024"></a>00024
<a name="l00030"></a><a class="code" href="class_c_long_number.html#aa6cb04e2afa3b0948941ab4910739331">00030</a> <a class="code" href="class_c_long_number.html">CLongNumber</a>* <a class="code" href="class_c_long_number.html#aa6cb04e2afa3b0948941ab4910739331">CLongNumber::NewL</a>(CConsoleBase* aConsole)
<a name="l00031"></a>00031 {
<a name="l00032"></a>00032 <a class="code" href="class_c_long_number.html">CLongNumber</a>* <span class="keyword">self</span> = <span class="keyword">new</span> (ELeave) <a class="code" href="class_c_long_number.html">CLongNumber</a>(aConsole);
<a name="l00033"></a>00033 <span class="keyword">self</span>-><a class="code" href="class_c_long_number.html#a1c0ebc1c9dbcc9c34250ffef859b8a2f">AddToScheduler</a>();
<a name="l00034"></a>00034 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00035"></a>00035 }
<a name="l00036"></a>00036
<a name="l00041"></a>00041 CLongNumber::CLongNumber(CConsoleBase* aConsole):
<a name="l00042"></a>00042 <span class="comment">// Constructor of the base class.</span>
<a name="l00043"></a>00043 CActive(CActive::EPriorityUserInput),
<a name="l00044"></a>00044 <span class="comment">// Create the linked list.</span>
<a name="l00045"></a>00045 iNumber(_FOFF(<a class="code" href="class_t_digit.html">TDigit</a>,iSLink)),
<a name="l00046"></a>00046 iConsole(aConsole),
<a name="l00047"></a>00047 <span class="comment">// Initialize the iterator.</span>
<a name="l00048"></a>00048 iIterator(iNumber)
<a name="l00049"></a>00049 {
<a name="l00050"></a>00050 }
<a name="l00051"></a>00051
<a name="l00052"></a>00052
<a name="l00056"></a><a class="code" href="class_c_long_number.html#a1c0ebc1c9dbcc9c34250ffef859b8a2f">00056</a> <span class="keywordtype">void</span> <a class="code" href="class_c_long_number.html#a1c0ebc1c9dbcc9c34250ffef859b8a2f">CLongNumber::AddToScheduler</a>()
<a name="l00057"></a>00057 {
<a name="l00058"></a>00058 CActiveScheduler::Add(<span class="keyword">this</span>);
<a name="l00059"></a>00059 }
<a name="l00060"></a>00060
<a name="l00064"></a><a class="code" href="class_c_long_number.html#a1b7d3d5b97621f32d776d9b1a0d19d8a">00064</a> <span class="keywordtype">void</span> <a class="code" href="class_c_long_number.html#a1b7d3d5b97621f32d776d9b1a0d19d8a">CLongNumber::RunL</a>()
<a name="l00065"></a>00065 {
<a name="l00066"></a>00066 <span class="comment">// Get the key code.</span>
<a name="l00067"></a>00067 TUint8 option = iConsole->KeyCode();
<a name="l00068"></a>00068 <span class="comment">// Print the selected option.</span>
<a name="l00069"></a>00069 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTextFormat,<span class="stringliteral">"%c\n"</span>);
<a name="l00070"></a>00070 iConsole->Printf(KTextFormat,option);
<a name="l00071"></a>00071
<a name="l00072"></a>00072 TInt number = option - (TUint)<span class="charliteral">'0'</span>;
<a name="l00073"></a>00073 <span class="comment">// The user has entered a number.</span>
<a name="l00074"></a>00074 <span class="keywordflow">if</span>(number <10 && number > -1)
<a name="l00075"></a>00075 {
<a name="l00076"></a>00076 <span class="comment">// Append to the list based on iOption.</span>
<a name="l00077"></a>00077 <span class="keywordflow">switch</span>(iOption)
<a name="l00078"></a>00078 {
<a name="l00079"></a>00079 <span class="comment">// Call the TSglQue::AddFirst() function.</span>
<a name="l00080"></a>00080 <span class="keywordflow">case</span> EAddFirst:
<a name="l00081"></a>00081 {
<a name="l00082"></a>00082 <span class="comment">// Create an object of the TDigit class.</span>
<a name="l00083"></a>00083 <a class="code" href="class_t_digit.html">TDigit</a>* digit = <span class="keyword">new</span> (ELeave) <a class="code" href="class_t_digit.html">TDigit</a>;
<a name="l00084"></a>00084 <span class="comment">// Set TDigit::iDigit to the number entered by the user.</span>
<a name="l00085"></a>00085 digit-><a class="code" href="class_t_digit.html#a47ece24e5d32c125a2afea13179c6b65">Set</a>(number);
<a name="l00086"></a>00086 <span class="comment">// Add TDigit to the start of the list.</span>
<a name="l00087"></a>00087 iNumber.AddFirst(*digit);
<a name="l00088"></a>00088 iOption = ETOptionNone;
<a name="l00089"></a>00089 }
<a name="l00090"></a>00090 <span class="comment">// Print the number.</span>
<a name="l00091"></a>00091 <a class="code" href="class_c_long_number.html#aec695d1da24cd27f36fed7c4f0ffe0a6">PrintNumber</a>();
<a name="l00092"></a>00092 <span class="keywordflow">break</span>;
<a name="l00093"></a>00093 <span class="comment">// Call the TSglQue::AddLast() function.</span>
<a name="l00094"></a>00094 <span class="keywordflow">case</span> EAddLast:
<a name="l00095"></a>00095 {
<a name="l00096"></a>00096 <span class="comment">// Create an object of the TDigit class.</span>
<a name="l00097"></a>00097 <a class="code" href="class_t_digit.html">TDigit</a>* digit = <span class="keyword">new</span> (ELeave) <a class="code" href="class_t_digit.html">TDigit</a>;
<a name="l00098"></a>00098 <span class="comment">// Set TDigit::iDigit to the number entered by the user.</span>
<a name="l00099"></a>00099 digit-><a class="code" href="class_t_digit.html#a47ece24e5d32c125a2afea13179c6b65">Set</a>(number);
<a name="l00100"></a>00100 <span class="comment">// Add TDigit to the end of the list.</span>
<a name="l00101"></a>00101 iNumber.AddLast(*digit);
<a name="l00102"></a>00102 iOption = ETOptionNone;
<a name="l00103"></a>00103 }
<a name="l00104"></a>00104 <span class="comment">// Print the number.</span>
<a name="l00105"></a>00105 <a class="code" href="class_c_long_number.html#aec695d1da24cd27f36fed7c4f0ffe0a6">PrintNumber</a>();
<a name="l00106"></a>00106 <span class="keywordflow">break</span>;
<a name="l00107"></a>00107 <span class="keywordflow">case</span> ETOptionNone:
<a name="l00108"></a>00108 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KInvalidOption,<span class="stringliteral">"Invalid Option!\n"</span>);
<a name="l00109"></a>00109 iConsole->Printf(KInvalidOption);
<a name="l00110"></a>00110 <span class="keywordflow">break</span>;
<a name="l00111"></a>00111 <span class="keywordflow">default</span>:
<a name="l00112"></a>00112 iOption = ETOptionNone;
<a name="l00113"></a>00113 <span class="keywordflow">break</span>;
<a name="l00114"></a>00114 }
<a name="l00115"></a>00115 <span class="comment">// Generate an asynchronous read request.</span>
<a name="l00116"></a>00116 <a class="code" href="class_c_long_number.html#a1b5d110a5df39ccfeda083160370dc5c">ReadNumber</a>();
<a name="l00117"></a>00117 }
<a name="l00118"></a>00118 <span class="comment">// The user has not entered a number.</span>
<a name="l00119"></a>00119 <span class="comment">// Hence, process this request as an option,</span>
<a name="l00120"></a>00120 <span class="comment">// which represented by the TOption enumeration.</span>
<a name="l00121"></a>00121 <span class="keywordflow">else</span>
<a name="l00122"></a>00122 {
<a name="l00123"></a>00123 <span class="keywordflow">switch</span>(option)
<a name="l00124"></a>00124 {
<a name="l00125"></a>00125 <span class="keywordflow">case</span> <span class="charliteral">'f'</span>:
<a name="l00126"></a>00126 {
<a name="l00127"></a>00127 <span class="comment">// Add first.</span>
<a name="l00128"></a>00128 iOption = EAddFirst;
<a name="l00129"></a>00129 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTextEnterDigit,<span class="stringliteral">"\nEnter a digit\n"</span>);
<a name="l00130"></a>00130 iConsole->Printf(KTextEnterDigit);
<a name="l00131"></a>00131 <span class="comment">// Read a digit.</span>
<a name="l00132"></a>00132 ReadFunc();
<a name="l00133"></a>00133 }
<a name="l00134"></a>00134 <span class="keywordflow">break</span>;
<a name="l00135"></a>00135 <span class="keywordflow">case</span> <span class="charliteral">'l'</span>:
<a name="l00136"></a>00136 {
<a name="l00137"></a>00137 <span class="comment">// Add last.</span>
<a name="l00138"></a>00138 iOption = EAddLast;
<a name="l00139"></a>00139 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTextEnterDigit,<span class="stringliteral">"\nEnter a digit\n"</span>);
<a name="l00140"></a>00140 iConsole->Printf(KTextEnterDigit);
<a name="l00141"></a>00141 <span class="comment">// Read a digit.</span>
<a name="l00142"></a>00142 ReadFunc();
<a name="l00143"></a>00143 }
<a name="l00144"></a>00144 <span class="keywordflow">break</span>;
<a name="l00145"></a>00145 <span class="keywordflow">case</span> <span class="charliteral">'r'</span>:
<a name="l00146"></a>00146 {
<a name="l00147"></a>00147 <span class="keywordflow">if</span>(iNumber.IsEmpty())
<a name="l00148"></a>00148 {
<a name="l00149"></a>00149 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTextEmpty,<span class="stringliteral">"Empty Queue !\n"</span>);
<a name="l00150"></a>00150 iConsole->Printf(KTextEmpty);
<a name="l00151"></a>00151 <a class="code" href="class_c_long_number.html#a1b5d110a5df39ccfeda083160370dc5c">ReadNumber</a>();
<a name="l00152"></a>00152 <span class="keywordflow">break</span>;
<a name="l00153"></a>00153 }
<a name="l00154"></a>00154 <span class="comment">// Remove the last element in the list.</span>
<a name="l00155"></a>00155 <a class="code" href="class_t_digit.html">TDigit</a>* ptr = iNumber.Last();
<a name="l00156"></a>00156 iNumber.Remove(*ptr);
<a name="l00157"></a>00157 <span class="keyword">delete</span> ptr;
<a name="l00158"></a>00158 <span class="comment">// Print the number.</span>
<a name="l00159"></a>00159 <a class="code" href="class_c_long_number.html#aec695d1da24cd27f36fed7c4f0ffe0a6">PrintNumber</a>();
<a name="l00160"></a>00160 <span class="comment">// Read a digit.</span>
<a name="l00161"></a>00161 <a class="code" href="class_c_long_number.html#a1b5d110a5df39ccfeda083160370dc5c">ReadNumber</a>();
<a name="l00162"></a>00162 }
<a name="l00163"></a>00163 <span class="keywordflow">break</span>;
<a name="l00164"></a>00164 <span class="keywordflow">default</span>:
<a name="l00165"></a>00165 CActiveScheduler::Stop();
<a name="l00166"></a>00166 }
<a name="l00167"></a>00167 }
<a name="l00168"></a>00168 }
<a name="l00169"></a>00169
<a name="l00173"></a>00173 <span class="keywordtype">void</span> CLongNumber::ReadFunc()
<a name="l00174"></a>00174 {
<a name="l00175"></a>00175 <span class="comment">// Wait for a key press event.</span>
<a name="l00176"></a>00176 iConsole->Read(iStatus);
<a name="l00177"></a>00177 SetActive();
<a name="l00178"></a>00178 }
<a name="l00179"></a>00179
<a name="l00183"></a><a class="code" href="class_c_long_number.html#a1b5d110a5df39ccfeda083160370dc5c">00183</a> <span class="keywordtype">void</span> <a class="code" href="class_c_long_number.html#a1b5d110a5df39ccfeda083160370dc5c">CLongNumber::ReadNumber</a>()
<a name="l00184"></a>00184 {
<a name="l00185"></a>00185 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTextMenu,<span class="stringliteral">"\nMenu\n***\nAdd [f]irst digit to number\nAdd [l]ast digit to number\n[r]emove last digit from number\nAny other NON-NUMERIC key to stop\n***\n"</span>);
<a name="l00186"></a>00186 iConsole->Printf(KTextMenu);
<a name="l00187"></a>00187 ReadFunc();
<a name="l00188"></a>00188 }
<a name="l00189"></a>00189
<a name="l00193"></a><a class="code" href="class_c_long_number.html#aec695d1da24cd27f36fed7c4f0ffe0a6">00193</a> <span class="keywordtype">void</span> <a class="code" href="class_c_long_number.html#aec695d1da24cd27f36fed7c4f0ffe0a6">CLongNumber::PrintNumber</a>()
<a name="l00194"></a>00194 {
<a name="l00195"></a>00195 <span class="keywordflow">if</span>(iNumber.IsEmpty())
<a name="l00196"></a>00196 {
<a name="l00197"></a>00197 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTextEmpty,<span class="stringliteral">"Empty Queue !\n"</span>);
<a name="l00198"></a>00198 iConsole->Printf(KTextEmpty);
<a name="l00199"></a>00199 }
<a name="l00200"></a>00200 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTextNumber,<span class="stringliteral">"The number is: "</span>);
<a name="l00201"></a>00201 iConsole->Printf(KTextNumber);
<a name="l00202"></a>00202 <span class="comment">// Set the iterator to the first element of the list.</span>
<a name="l00203"></a>00203 iIterator.SetToFirst();
<a name="l00204"></a>00204
<a name="l00205"></a>00205 <span class="comment">// Iterate the list.</span>
<a name="l00206"></a>00206 <span class="keywordflow">while</span>(iIterator != NULL)
<a name="l00207"></a>00207 {
<a name="l00208"></a>00208 <span class="comment">// Get the digit.</span>
<a name="l00209"></a>00209 <a class="code" href="class_t_digit.html">TDigit</a> digit = *iIterator;
<a name="l00210"></a>00210 <span class="comment">// Print the digit.</span>
<a name="l00211"></a>00211 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTextInt,<span class="stringliteral">"%d"</span>);
<a name="l00212"></a>00212 iConsole->Printf(KTextInt,digit.<a class="code" href="class_t_digit.html#ac59dd51bd32a1a8f614f96093ca29937">Get</a>());
<a name="l00213"></a>00213 <span class="comment">// Go to the next element of the list.</span>
<a name="l00214"></a>00214 iIterator++;
<a name="l00215"></a>00215 }
<a name="l00216"></a>00216 }
<a name="l00217"></a>00217
<a name="l00221"></a><a class="code" href="class_c_long_number.html#aa7b7c59251aa6d2ffc25f0ec9312b59d">00221</a> <span class="keywordtype">void</span> <a class="code" href="class_c_long_number.html#aa7b7c59251aa6d2ffc25f0ec9312b59d">CLongNumber::InitializeIter</a>()
<a name="l00222"></a>00222 {
<a name="l00223"></a>00223 iIterator.SetToFirst();
<a name="l00224"></a>00224 }
<a name="l00225"></a>00225
<a name="l00232"></a><a class="code" href="class_c_long_number.html#a5ef806e05880bcf07c0506bd36beefe0">00232</a> TBool <a class="code" href="class_c_long_number.html#a5ef806e05880bcf07c0506bd36beefe0">CLongNumber::GetNumber</a>(TInt& aValue)
<a name="l00233"></a>00233 {
<a name="l00234"></a>00234 <span class="keywordflow">if</span>(iIterator == NULL)
<a name="l00235"></a>00235 {
<a name="l00236"></a>00236 <span class="comment">// The iterator has reached the end of the list.</span>
<a name="l00237"></a>00237 <span class="keywordflow">return</span> EFalse;
<a name="l00238"></a>00238 }
<a name="l00239"></a>00239 <a class="code" href="class_t_digit.html">TDigit</a> digit = *iIterator;
<a name="l00240"></a>00240 aValue = digit.<a class="code" href="class_t_digit.html#ac59dd51bd32a1a8f614f96093ca29937">Get</a>();
<a name="l00241"></a>00241 <span class="keywordflow">return</span> ETrue;
<a name="l00242"></a>00242 }
<a name="l00243"></a>00243
<a name="l00248"></a><a class="code" href="class_c_long_number.html#ae717f76bb1203c1c495b5e37fa4d8ff9">00248</a> TBool <a class="code" href="class_c_long_number.html#ae717f76bb1203c1c495b5e37fa4d8ff9">CLongNumber::Slide</a>()
<a name="l00249"></a>00249 {
<a name="l00250"></a>00250 <span class="comment">// Set the iterator to point to the next element.</span>
<a name="l00251"></a>00251 iIterator++;
<a name="l00252"></a>00252 <span class="keywordflow">if</span>(iIterator == NULL)
<a name="l00253"></a>00253 {
<a name="l00254"></a>00254 <span class="comment">// The iterator has reached the end of the list.</span>
<a name="l00255"></a>00255 <span class="keywordflow">return</span> EFalse;
<a name="l00256"></a>00256 }
<a name="l00257"></a>00257 <span class="keywordflow">return</span> ETrue;
<a name="l00258"></a>00258 }
<a name="l00259"></a>00259
<a name="l00263"></a><a class="code" href="class_c_long_number.html#a7039dbe9ebbf42b59f919ba2755dd8a3">00263</a> <span class="keywordtype">void</span> <a class="code" href="class_c_long_number.html#a7039dbe9ebbf42b59f919ba2755dd8a3">CLongNumber::DoCancel</a>()
<a name="l00264"></a>00264 {
<a name="l00265"></a>00265 <span class="keywordflow">if</span>(IsActive())
<a name="l00266"></a>00266 {
<a name="l00267"></a>00267 <span class="comment">// Cancel any outstanding read requests.</span>
<a name="l00268"></a>00268 iConsole->ReadCancel();
<a name="l00269"></a>00269 }
<a name="l00270"></a>00270 }
<a name="l00271"></a>00271
<a name="l00277"></a><a class="code" href="class_c_long_number.html#a2112ad5c07adc10adf5d63c33ef2d5cd">00277</a> <a class="code" href="class_c_long_number.html#a2112ad5c07adc10adf5d63c33ef2d5cd">CLongNumber::~CLongNumber</a>()
<a name="l00278"></a>00278 {
<a name="l00279"></a>00279 <span class="comment">// Delete the elements from the list</span>
<a name="l00280"></a>00280 <span class="keywordflow">if</span>(iIterator)
<a name="l00281"></a>00281 {
<a name="l00282"></a>00282 iIterator.SetToFirst();
<a name="l00283"></a>00283 <span class="comment">// Iterate the list and delete all TDigit objects</span>
<a name="l00284"></a>00284 <a class="code" href="class_t_digit.html">TDigit</a> *ptr = iIterator++;
<a name="l00285"></a>00285 <span class="keywordflow">while</span> (ptr != NULL)
<a name="l00286"></a>00286 {
<a name="l00287"></a>00287 <span class="keyword">delete</span> ptr;
<a name="l00288"></a>00288 ptr = iIterator++;
<a name="l00289"></a>00289 }
<a name="l00290"></a>00290 }
<a name="l00291"></a>00291 }
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