examples/S60CppExamples/helloworldbasic/doc/helloworldbasicappui_8cpp-source.html

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00020 <h1>helloworldbasicappui.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
00021 <a name="l00002"></a>00002 <span class="comment">* ==============================================================================</span>
00022 <a name="l00003"></a>00003 <span class="comment">*  Name        : helloworldbasicappui.cpp</span>
00023 <a name="l00004"></a>00004 <span class="comment">*  Part of     : Helloworldbasic</span>
00024 <a name="l00005"></a>00005 <span class="comment">*  Interface   :</span>
00025 <a name="l00006"></a>00006 <span class="comment">*  Description :</span>
00026 <a name="l00007"></a>00007 <span class="comment">*  Version     :</span>
00027 <a name="l00008"></a>00008 <span class="comment">*</span>
00028 <a name="l00009"></a>00009 <span class="comment">*  Copyright (c) 2005-2006 Nokia Corporation.</span>
00029 <a name="l00010"></a>00010 <span class="comment">*  This material, including documentation and any related</span>
00030 <a name="l00011"></a>00011 <span class="comment">*  computer programs, is protected by copyright controlled by</span>
00031 <a name="l00012"></a>00012 <span class="comment">*  Nokia Corporation.</span>
00032 <a name="l00013"></a>00013 <span class="comment">* ==============================================================================</span>
00033 <a name="l00014"></a>00014 <span class="comment">*/</span>
00034 <a name="l00015"></a>00015 
00035 <a name="l00016"></a>00016 <span class="comment">// INCLUDE FILES</span>
00036 <a name="l00017"></a>00017 <span class="preprocessor">#include &lt;avkon.hrh&gt;</span>
00037 <a name="l00018"></a>00018 <span class="preprocessor">#include &lt;aknnotewrappers.h&gt;</span>
00038 <a name="l00019"></a>00019 <span class="preprocessor">#include &lt;stringloader.h&gt;</span>
00039 <a name="l00020"></a>00020 <span class="preprocessor">#include &lt;HelloWorldBasic.rsg&gt;</span>
00040 <a name="l00021"></a>00021 <span class="preprocessor">#include &lt;f32file.h&gt;</span>
00041 <a name="l00022"></a>00022 <span class="preprocessor">#include &lt;s32file.h&gt;</span>
00042 <a name="l00023"></a>00023 
00043 <a name="l00024"></a>00024 <span class="preprocessor">#include "HelloWorldBasic.pan"</span>
00044 <a name="l00025"></a>00025 <span class="preprocessor">#include "HelloWorldBasicAppUi.h"</span>
00045 <a name="l00026"></a>00026 <span class="preprocessor">#include "HelloWorldBasicAppView.h"</span>
00046 <a name="l00027"></a>00027 <span class="preprocessor">#include "HelloWorldBasic.hrh"</span>
00047 <a name="l00028"></a>00028 <span class="preprocessor">#include "HelloWorldBasicQueryDialog.h"</span>
00048 <a name="l00029"></a>00029 
00049 <a name="l00030"></a>00030 _LIT( KHelloFileName, <span class="stringliteral">"Hello.txt"</span> );
00050 <a name="l00031"></a>00031 
00051 <a name="l00032"></a>00032 <span class="comment">// ============================ MEMBER FUNCTIONS ===============================</span>
00052 <a name="l00033"></a>00033 
00053 <a name="l00034"></a>00034 
00054 <a name="l00035"></a>00035 <span class="comment">// -----------------------------------------------------------------------------</span>
00055 <a name="l00036"></a>00036 <span class="comment">// CHelloWorldBasicAppUi::ConstructL()</span>
00056 <a name="l00037"></a>00037 <span class="comment">// Symbian 2nd phase constructor can leave.</span>
00057 <a name="l00038"></a>00038 <span class="comment">// -----------------------------------------------------------------------------</span>
00058 <a name="l00039"></a>00039 <span class="comment">//</span>
00059 <a name="l00040"></a><a class="code" href="class_c_hello_world_basic_app_ui.html#9ce34ba0b947863222da3c63d0481044">00040</a> <span class="keywordtype">void</span> <a class="code" href="class_c_hello_world_basic_app_ui.html#9ce34ba0b947863222da3c63d0481044">CHelloWorldBasicAppUi::ConstructL</a>()
00060 <a name="l00041"></a>00041     {
00061 <a name="l00042"></a>00042     <span class="comment">// Initialise app UI with standard value.</span>
00062 <a name="l00043"></a>00043     BaseConstructL(CAknAppUi::EAknEnableSkin);
00063 <a name="l00044"></a>00044 
00064 <a name="l00045"></a>00045     <span class="comment">// Here the Hello.txt file is created. Because HelloWorld application is</span>
00065 <a name="l00046"></a>00046     <span class="comment">// localized to various languages, the Hello.txt-file is created every time</span>
00066 <a name="l00047"></a>00047     <span class="comment">// with current localization language</span>
00067 <a name="l00048"></a>00048     <span class="comment">//</span>
00068 <a name="l00049"></a>00049     RFs fsSession;
00069 <a name="l00050"></a>00050     User::LeaveIfError(fsSession.Connect());
00070 <a name="l00051"></a>00051     CleanupClosePushL( fsSession );
00071 <a name="l00052"></a>00052     TInt objectsInStack = 1;
00072 <a name="l00053"></a>00053 
00073 <a name="l00054"></a>00054 <span class="preprocessor">    #if defined(__WINS__) || defined(__WINSCW__)</span>
00074 <a name="l00055"></a>00055 <span class="preprocessor"></span>    <span class="comment">// create private folder, when testing in emulator.</span>
00075 <a name="l00056"></a>00056     <span class="comment">// ignore the return value; if this fails, then file.Replace() will fail</span>
00076 <a name="l00057"></a>00057     <span class="comment">// and a warning note will be printed.</span>
00077 <a name="l00058"></a>00058     <span class="comment">//</span>
00078 <a name="l00059"></a>00059     fsSession.CreatePrivatePath(EDriveC);
00079 <a name="l00060"></a>00060 <span class="preprocessor">    #endif</span>
00080 <a name="l00061"></a>00061 <span class="preprocessor"></span>
00081 <a name="l00062"></a>00062     RFile file;
00082 <a name="l00063"></a>00063 
00083 <a name="l00064"></a>00064     <span class="comment">// Create a file to write the text to</span>
00084 <a name="l00065"></a>00065     TInt err = file.Replace(fsSession, KHelloFileName, EFileWrite );
00085 <a name="l00066"></a>00066     <span class="keywordflow">if</span> (KErrNone == err)
00086 <a name="l00067"></a>00067         {
00087 <a name="l00068"></a>00068         CleanupClosePushL( file );
00088 <a name="l00069"></a>00069 
00089 <a name="l00070"></a>00070         RFileWriteStream outputFileStream( file );
00090 <a name="l00071"></a>00071         CleanupClosePushL( outputFileStream );
00091 <a name="l00072"></a>00072 
00092 <a name="l00073"></a>00073         <span class="comment">// Load a string from the resource file and stream it to file</span>
00093 <a name="l00074"></a>00074         HBufC* textResource = StringLoader::LoadLC( R_HEWB_FILE_TEXT );
00094 <a name="l00075"></a>00075         objectsInStack += 3; <span class="comment">// file, outputFileStream, testResource</span>
00095 <a name="l00076"></a>00076 
00096 <a name="l00077"></a>00077         outputFileStream &lt;&lt; *textResource;
00097 <a name="l00078"></a>00078         }
00098 <a name="l00079"></a>00079     <span class="keywordflow">else</span>
00099 <a name="l00080"></a>00080         {
00100 <a name="l00081"></a>00081         _LIT(KFileWriteFailed,<span class="stringliteral">"Writing file %S failed: error %d"</span>);
00101 <a name="l00082"></a>00082         CAknWarningNote* note = <span class="keyword">new</span> ( ELeave ) CAknWarningNote(ETrue);
00102 <a name="l00083"></a>00083 
00103 <a name="l00084"></a>00084         TBuf&lt;64&gt; text;
00104 <a name="l00085"></a>00085         text.Format(KFileWriteFailed, &amp;KHelloFileName, err);
00105 <a name="l00086"></a>00086         note-&gt;ExecuteLD( text );
00106 <a name="l00087"></a>00087         }
00107 <a name="l00088"></a>00088 
00108 <a name="l00089"></a>00089     CleanupStack::PopAndDestroy(objectsInStack, &amp;fsSession);
00109 <a name="l00090"></a>00090 
00110 <a name="l00091"></a>00091     <span class="comment">// Create view object</span>
00111 <a name="l00092"></a>00092     <a class="code" href="class_c_hello_world_basic_app_ui.html#45dd0a3e0e75e56b4727a01a8ef2c6b1">iAppView</a> = <a class="code" href="class_c_hello_world_basic_app_view.html#5891ab00f23b517058efe213c1febfd2">CHelloWorldBasicAppView::NewL</a>( ClientRect() );
00112 <a name="l00093"></a>00093 
00113 <a name="l00094"></a>00094     }
00114 <a name="l00095"></a>00095 <span class="comment">// -----------------------------------------------------------------------------</span>
00115 <a name="l00096"></a>00096 <span class="comment">// CHelloWorldBasicAppUi::CHelloWorldBasicAppUi()</span>
00116 <a name="l00097"></a>00097 <span class="comment">// C++ default constructor can NOT contain any code, that might leave.</span>
00117 <a name="l00098"></a>00098 <span class="comment">// -----------------------------------------------------------------------------</span>
00118 <a name="l00099"></a>00099 <span class="comment">//</span>
00119 <a name="l00100"></a><a class="code" href="class_c_hello_world_basic_app_ui.html#7125b19ca9ed9c5c28ea07709c9421d7">00100</a> <a class="code" href="class_c_hello_world_basic_app_ui.html#7125b19ca9ed9c5c28ea07709c9421d7">CHelloWorldBasicAppUi::CHelloWorldBasicAppUi</a>()
00120 <a name="l00101"></a>00101     {
00121 <a name="l00102"></a>00102     <span class="comment">// No implementation required</span>
00122 <a name="l00103"></a>00103     }
00123 <a name="l00104"></a>00104 
00124 <a name="l00105"></a>00105 <span class="comment">// -----------------------------------------------------------------------------</span>
00125 <a name="l00106"></a>00106 <span class="comment">// CHelloWorldBasicAppUi::~CHelloWorldBasicAppUi()</span>
00126 <a name="l00107"></a>00107 <span class="comment">// Destructor.</span>
00127 <a name="l00108"></a>00108 <span class="comment">// -----------------------------------------------------------------------------</span>
00128 <a name="l00109"></a>00109 <span class="comment">//</span>
00129 <a name="l00110"></a><a class="code" href="class_c_hello_world_basic_app_ui.html#9aa621dc774b9ce3172c03db921996cf">00110</a> <a class="code" href="class_c_hello_world_basic_app_ui.html#9aa621dc774b9ce3172c03db921996cf">CHelloWorldBasicAppUi::~CHelloWorldBasicAppUi</a>()
00130 <a name="l00111"></a>00111     {
00131 <a name="l00112"></a>00112     <span class="keywordflow">if</span> ( <a class="code" href="class_c_hello_world_basic_app_ui.html#45dd0a3e0e75e56b4727a01a8ef2c6b1">iAppView</a> )
00132 <a name="l00113"></a>00113         {
00133 <a name="l00114"></a>00114         <span class="keyword">delete</span> <a class="code" href="class_c_hello_world_basic_app_ui.html#45dd0a3e0e75e56b4727a01a8ef2c6b1">iAppView</a>;
00134 <a name="l00115"></a>00115         <a class="code" href="class_c_hello_world_basic_app_ui.html#45dd0a3e0e75e56b4727a01a8ef2c6b1">iAppView</a> = NULL;
00135 <a name="l00116"></a>00116         }
00136 <a name="l00117"></a>00117     }
00137 <a name="l00118"></a>00118 
00138 <a name="l00119"></a>00119 <span class="comment">// -----------------------------------------------------------------------------</span>
00139 <a name="l00120"></a>00120 <span class="comment">// CHelloWorldBasicAppUi::HandleCommandL()</span>
00140 <a name="l00121"></a>00121 <span class="comment">// Takes care of command handling.</span>
00141 <a name="l00122"></a>00122 <span class="comment">// -----------------------------------------------------------------------------</span>
00142 <a name="l00123"></a>00123 <span class="comment">//</span>
00143 <a name="l00124"></a><a class="code" href="class_c_hello_world_basic_app_ui.html#a682d228622cea7790645ce10f591242">00124</a> <span class="keywordtype">void</span> <a class="code" href="class_c_hello_world_basic_app_ui.html#a682d228622cea7790645ce10f591242">CHelloWorldBasicAppUi::HandleCommandL</a>( TInt aCommand )
00144 <a name="l00125"></a>00125     {
00145 <a name="l00126"></a>00126     <span class="comment">// clear possible old user-given text</span>
00146 <a name="l00127"></a>00127     <span class="keywordflow">if</span> (<a class="code" href="class_c_hello_world_basic_app_ui.html#45dd0a3e0e75e56b4727a01a8ef2c6b1">iAppView</a>-&gt;<a class="code" href="class_c_hello_world_basic_app_view.html#59cee462c5e06d883260d21037a3ebd7">GetText</a>().Size() &gt; 0)
00147 <a name="l00128"></a>00128         {
00148 <a name="l00129"></a>00129         <a class="code" href="class_c_hello_world_basic_app_ui.html#45dd0a3e0e75e56b4727a01a8ef2c6b1">iAppView</a>-&gt;<a class="code" href="class_c_hello_world_basic_app_view.html#59cee462c5e06d883260d21037a3ebd7">GetText</a>().Zero();
00149 <a name="l00130"></a>00130         <a class="code" href="class_c_hello_world_basic_app_ui.html#45dd0a3e0e75e56b4727a01a8ef2c6b1">iAppView</a>-&gt;DrawNow();
00150 <a name="l00131"></a>00131         }
00151 <a name="l00132"></a>00132 
00152 <a name="l00133"></a>00133     <span class="keywordflow">switch</span>( aCommand )
00153 <a name="l00134"></a>00134         {
00154 <a name="l00135"></a>00135         <span class="keywordflow">case</span> EEikCmdExit:
00155 <a name="l00136"></a>00136         <span class="keywordflow">case</span> EAknSoftkeyExit:
00156 <a name="l00137"></a>00137             Exit();
00157 <a name="l00138"></a>00138             <span class="keywordflow">break</span>;
00158 <a name="l00139"></a>00139 
00159 <a name="l00140"></a>00140         <span class="keywordflow">case</span> EHelloWorldBasicCommand1:
00160 <a name="l00141"></a>00141             {
00161 <a name="l00142"></a>00142             <span class="comment">// Load a string from the resource file and display it</span>
00162 <a name="l00143"></a>00143             HBufC* textResource = StringLoader::LoadLC( R_HEWB_COMMAND1_TEXT );
00163 <a name="l00144"></a>00144             CAknInformationNote* note = <span class="keyword">new</span> ( ELeave ) CAknInformationNote;
00164 <a name="l00145"></a>00145 
00165 <a name="l00146"></a>00146             <span class="comment">// Show the information Note with</span>
00166 <a name="l00147"></a>00147             <span class="comment">// textResource loaded with StringLoader.</span>
00167 <a name="l00148"></a>00148             note-&gt;ExecuteLD( *textResource );
00168 <a name="l00149"></a>00149 
00169 <a name="l00150"></a>00150             <span class="comment">// Pop HBuf from CleanUpStack and Destroy it.</span>
00170 <a name="l00151"></a>00151             CleanupStack::PopAndDestroy( textResource );
00171 <a name="l00152"></a>00152             }
00172 <a name="l00153"></a>00153             <span class="keywordflow">break</span>;
00173 <a name="l00154"></a>00154 
00174 <a name="l00155"></a>00155         <span class="keywordflow">case</span> EHelloWorldBasicCommand2:
00175 <a name="l00156"></a>00156             {
00176 <a name="l00157"></a>00157             RFs fsSession;
00177 <a name="l00158"></a>00158             RFile rFile;
00178 <a name="l00159"></a>00159 
00179 <a name="l00160"></a>00160             <span class="comment">// Connects a client process to the fileserver</span>
00180 <a name="l00161"></a>00161             User::LeaveIfError(fsSession.Connect());
00181 <a name="l00162"></a>00162             CleanupClosePushL(fsSession);
00182 <a name="l00163"></a>00163 
00183 <a name="l00164"></a>00164             <span class="comment">//Open file where the stream text is</span>
00184 <a name="l00165"></a>00165             User::LeaveIfError(rFile.Open(fsSession,KHelloFileName, EFileStreamText));
00185 <a name="l00166"></a>00166             CleanupClosePushL(rFile);
00186 <a name="l00167"></a>00167 
00187 <a name="l00168"></a>00168             <span class="comment">// copy stream from file to RFileStream object</span>
00188 <a name="l00169"></a>00169             RFileReadStream inputFileStream(rFile);
00189 <a name="l00170"></a>00170             CleanupClosePushL(inputFileStream);
00190 <a name="l00171"></a>00171 
00191 <a name="l00172"></a>00172             <span class="comment">// HBufC descriptor is created from the RFileStream object.</span>
00192 <a name="l00173"></a>00173             HBufC* fileData = HBufC::NewLC(inputFileStream, 32);
00193 <a name="l00174"></a>00174 
00194 <a name="l00175"></a>00175             CAknInformationNote* note = <span class="keyword">new</span> ( ELeave ) CAknInformationNote;
00195 <a name="l00176"></a>00176 
00196 <a name="l00177"></a>00177             <span class="comment">// Show the information Note</span>
00197 <a name="l00178"></a>00178             note-&gt;ExecuteLD( *fileData );
00198 <a name="l00179"></a>00179 
00199 <a name="l00180"></a>00180             <span class="comment">// Pop loaded resources from the cleanup stack:</span>
00200 <a name="l00181"></a>00181             <span class="comment">// filedata, inputFileStream, rFile, fsSession</span>
00201 <a name="l00182"></a>00182             CleanupStack::PopAndDestroy(4, &amp;fsSession);
00202 <a name="l00183"></a>00183             }
00203 <a name="l00184"></a>00184             <span class="keywordflow">break</span>;
00204 <a name="l00185"></a>00185 
00205 <a name="l00186"></a>00186         <span class="keywordflow">case</span> EHelloWorldBasicCommand3:
00206 <a name="l00187"></a>00187             {
00207 <a name="l00188"></a>00188             <span class="comment">// Load a string from the resources and use it as a default value</span>
00208 <a name="l00189"></a>00189             HBufC* defaultText = StringLoader::LoadLC( R_HEWB_FILE_TEXT );
00209 <a name="l00190"></a>00190 
00210 <a name="l00191"></a>00191             <a class="code" href="class_c_hello_world_query_dialog.html">CHelloWorldQueryDialog</a> *dlg = <span class="keyword">new</span> (ELeave)
00211 <a name="l00192"></a>00192                 <a class="code" href="class_c_hello_world_query_dialog.html">CHelloWorldQueryDialog</a>( iAppView-&gt;GetText(), defaultText );
00212 <a name="l00193"></a>00193 
00213 <a name="l00194"></a>00194             dlg-&gt;ExecuteLD( R_DIALOG_TEXT_EDIT_QUERY );
00214 <a name="l00195"></a>00195             iAppView-&gt;DrawNow();
00215 <a name="l00196"></a>00196 
00216 <a name="l00197"></a>00197             <span class="comment">// Pop HBuf from CleanUpStack and Destroy it.</span>
00217 <a name="l00198"></a>00198             CleanupStack::PopAndDestroy( defaultText );
00218 <a name="l00199"></a>00199             }
00219 <a name="l00200"></a>00200             <span class="keywordflow">break</span>;
00220 <a name="l00201"></a>00201 
00221 <a name="l00202"></a>00202         <span class="keywordflow">default</span>:
00222 <a name="l00203"></a>00203             <span class="keywordflow">break</span>;
00223 <a name="l00204"></a>00204         }
00224 <a name="l00205"></a>00205     }
00225 <a name="l00206"></a>00206 <span class="comment">// -----------------------------------------------------------------------------</span>
00226 <a name="l00207"></a>00207 <span class="comment">//  Called by framework when layout is changed.</span>
00227 <a name="l00208"></a>00208 <span class="comment">//  Passes the new client rectangle to the AppView</span>
00228 <a name="l00209"></a>00209 <span class="comment">// -----------------------------------------------------------------------------</span>
00229 <a name="l00210"></a>00210 <span class="comment">//</span>
00230 <a name="l00211"></a><a class="code" href="class_c_hello_world_basic_app_ui.html#6acdbe8a9b57446075bf46d035e751eb">00211</a> <span class="keywordtype">void</span> <a class="code" href="class_c_hello_world_basic_app_ui.html#6acdbe8a9b57446075bf46d035e751eb">CHelloWorldBasicAppUi::HandleResourceChangeL</a>( TInt aType )
00231 <a name="l00212"></a>00212 {
00232 <a name="l00213"></a>00213     <span class="comment">// base-class call also</span>
00233 <a name="l00214"></a>00214     CAknAppUi::HandleResourceChangeL(aType);
00234 <a name="l00215"></a>00215     <span class="keywordflow">if</span> (aType == KEikDynamicLayoutVariantSwitch)
00235 <a name="l00216"></a>00216         {
00236 <a name="l00217"></a>00217         <span class="keywordflow">if</span> (<a class="code" href="class_c_hello_world_basic_app_ui.html#45dd0a3e0e75e56b4727a01a8ef2c6b1">iAppView</a>)
00237 <a name="l00218"></a>00218             iAppView-&gt;SetRect( ClientRect() );
00238 <a name="l00219"></a>00219         }
00239 <a name="l00220"></a>00220 }
00240 <a name="l00221"></a>00221 
00241 <a name="l00222"></a>00222 <span class="comment">// End of File</span>
00242 <a name="l00223"></a>00223 
00243 </pre></div><hr>
00244 
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00264         width=50%>
00265   <p style="font-family: Arial;"><small style="font-size: smaller;">© Nokia 2009</small></td>
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00267                         padding-right: 10px;
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00274         align=right><span style="font-weight: bold;"><a href="#Top"
00275                                                                                                         title="Back to top"><img
00276  src="top.gif"
00277         x-maintain-ratio=TRUE
00278         alt="Back to top"
00279         style="border: none;
00280                         width: 18px;
00281                         height: 15px;
00282                         float: none;
00283                         border-style: none;
00284                         border-style: none;"
00285         width=18
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00288  </table>
00289 </body>
00290 </html>
00291 

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