Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/helloworldbasicappui_8cpp_source.html
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<h1>examples/S60CppExamples/helloworldbasic/src/helloworldbasicappui.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment">* ==============================================================================</span>
<a name="l00003"></a>00003 <span class="comment">* Name : helloworldbasicappui.cpp</span>
<a name="l00004"></a>00004 <span class="comment">* Part of : Helloworldbasic</span>
<a name="l00005"></a>00005 <span class="comment">* Interface :</span>
<a name="l00006"></a>00006 <span class="comment">* Description :</span>
<a name="l00007"></a>00007 <span class="comment">* Version :</span>
<a name="l00008"></a>00008 <span class="comment">*</span>
<a name="l00009"></a>00009 <span class="comment">* Copyright (c) 2005-2006 Nokia Corporation.</span>
<a name="l00010"></a>00010 <span class="comment">* This material, including documentation and any related</span>
<a name="l00011"></a>00011 <span class="comment">* computer programs, is protected by copyright controlled by</span>
<a name="l00012"></a>00012 <span class="comment">* Nokia Corporation.</span>
<a name="l00013"></a>00013 <span class="comment">* ==============================================================================</span>
<a name="l00014"></a>00014 <span class="comment">*/</span>
<a name="l00015"></a>00015
<a name="l00016"></a>00016 <span class="comment">// INCLUDE FILES</span>
<a name="l00017"></a>00017 <span class="preprocessor">#include <avkon.hrh></span>
<a name="l00018"></a>00018 <span class="preprocessor">#include <aknnotewrappers.h></span>
<a name="l00019"></a>00019 <span class="preprocessor">#include <stringloader.h></span>
<a name="l00020"></a>00020 <span class="preprocessor">#include <HelloWorldBasic.rsg></span>
<a name="l00021"></a>00021 <span class="preprocessor">#include <f32file.h></span>
<a name="l00022"></a>00022 <span class="preprocessor">#include <s32file.h></span>
<a name="l00023"></a>00023
<a name="l00024"></a>00024 <span class="preprocessor">#include "HelloWorldBasic.pan"</span>
<a name="l00025"></a>00025 <span class="preprocessor">#include "HelloWorldBasicAppUi.h"</span>
<a name="l00026"></a>00026 <span class="preprocessor">#include "HelloWorldBasicAppView.h"</span>
<a name="l00027"></a>00027 <span class="preprocessor">#include "HelloWorldBasic.hrh"</span>
<a name="l00028"></a>00028 <span class="preprocessor">#include "HelloWorldBasicQueryDialog.h"</span>
<a name="l00029"></a>00029
<a name="l00030"></a>00030 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>( KHelloFileName, <span class="stringliteral">"Hello.txt"</span> );
<a name="l00031"></a>00031
<a name="l00032"></a>00032 <span class="comment">// ============================ MEMBER FUNCTIONS ===============================</span>
<a name="l00033"></a>00033
<a name="l00034"></a>00034
<a name="l00035"></a>00035 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00036"></a>00036 <span class="comment">// CHelloWorldBasicAppUi::ConstructL()</span>
<a name="l00037"></a>00037 <span class="comment">// Symbian 2nd phase constructor can leave.</span>
<a name="l00038"></a>00038 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00039"></a>00039 <span class="comment">//</span>
<a name="l00040"></a><a class="code" href="class_c_hello_world_basic_app_ui.html#a41de3f8d3baeca2df971fe8509043934">00040</a> <span class="keywordtype">void</span> <a class="code" href="class_c_hello_world_basic_app_ui.html#a41de3f8d3baeca2df971fe8509043934">CHelloWorldBasicAppUi::ConstructL</a>()
<a name="l00041"></a>00041 {
<a name="l00042"></a>00042 <span class="comment">// Initialise app UI with standard value.</span>
<a name="l00043"></a>00043 BaseConstructL(CAknAppUi::EAknEnableSkin);
<a name="l00044"></a>00044
<a name="l00045"></a>00045 <span class="comment">// Here the Hello.txt file is created. Because HelloWorld application is</span>
<a name="l00046"></a>00046 <span class="comment">// localized to various languages, the Hello.txt-file is created every time</span>
<a name="l00047"></a>00047 <span class="comment">// with current localization language</span>
<a name="l00048"></a>00048 <span class="comment">//</span>
<a name="l00049"></a>00049 RFs fsSession;
<a name="l00050"></a>00050 User::LeaveIfError(fsSession.Connect());
<a name="l00051"></a>00051 CleanupClosePushL( fsSession );
<a name="l00052"></a>00052 TInt objectsInStack = 1;
<a name="l00053"></a>00053
<a name="l00054"></a>00054 <span class="preprocessor"> #if defined(__WINS__) || defined(__WINSCW__)</span>
<a name="l00055"></a>00055 <span class="preprocessor"></span> <span class="comment">// create private folder, when testing in emulator.</span>
<a name="l00056"></a>00056 <span class="comment">// ignore the return value; if this fails, then file.Replace() will fail</span>
<a name="l00057"></a>00057 <span class="comment">// and a warning note will be printed.</span>
<a name="l00058"></a>00058 <span class="comment">//</span>
<a name="l00059"></a>00059 fsSession.CreatePrivatePath(EDriveC);
<a name="l00060"></a>00060 <span class="preprocessor"> #endif</span>
<a name="l00061"></a>00061 <span class="preprocessor"></span>
<a name="l00062"></a>00062 RFile file;
<a name="l00063"></a>00063
<a name="l00064"></a>00064 <span class="comment">// Create a file to write the text to</span>
<a name="l00065"></a>00065 TInt err = file.Replace(fsSession, KHelloFileName, EFileWrite );
<a name="l00066"></a>00066 <span class="keywordflow">if</span> (KErrNone == err)
<a name="l00067"></a>00067 {
<a name="l00068"></a>00068 CleanupClosePushL( file );
<a name="l00069"></a>00069
<a name="l00070"></a>00070 RFileWriteStream outputFileStream( file );
<a name="l00071"></a>00071 CleanupClosePushL( outputFileStream );
<a name="l00072"></a>00072
<a name="l00073"></a>00073 <span class="comment">// Load a string from the resource file and stream it to file</span>
<a name="l00074"></a>00074 HBufC* textResource = StringLoader::LoadLC( R_HEWB_FILE_TEXT );
<a name="l00075"></a>00075 objectsInStack += 3; <span class="comment">// file, outputFileStream, testResource</span>
<a name="l00076"></a>00076
<a name="l00077"></a>00077 outputFileStream << *textResource;
<a name="l00078"></a>00078 }
<a name="l00079"></a>00079 <span class="keywordflow">else</span>
<a name="l00080"></a>00080 {
<a name="l00081"></a>00081 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KFileWriteFailed,<span class="stringliteral">"Writing file %S failed: error %d"</span>);
<a name="l00082"></a>00082 CAknWarningNote* note = <span class="keyword">new</span> ( ELeave ) CAknWarningNote(ETrue);
<a name="l00083"></a>00083
<a name="l00084"></a>00084 TBuf<64> text;
<a name="l00085"></a>00085 text.Format(KFileWriteFailed, &KHelloFileName, err);
<a name="l00086"></a>00086 note->ExecuteLD( text );
<a name="l00087"></a>00087 }
<a name="l00088"></a>00088
<a name="l00089"></a>00089 CleanupStack::PopAndDestroy(objectsInStack, &fsSession);
<a name="l00090"></a>00090
<a name="l00091"></a>00091 <span class="comment">// Create view object</span>
<a name="l00092"></a>00092 iAppView = <a class="code" href="class_c_hello_world_basic_app_view.html#af938676f7eee65925c90b654b5a5034f">CHelloWorldBasicAppView::NewL</a>( ClientRect() );
<a name="l00093"></a>00093
<a name="l00094"></a>00094 }
<a name="l00095"></a>00095 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00096"></a>00096 <span class="comment">// CHelloWorldBasicAppUi::CHelloWorldBasicAppUi()</span>
<a name="l00097"></a>00097 <span class="comment">// C++ default constructor can NOT contain any code, that might leave.</span>
<a name="l00098"></a>00098 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00099"></a>00099 <span class="comment">//</span>
<a name="l00100"></a><a class="code" href="class_c_hello_world_basic_app_ui.html#a3f0e9dfa830c56bb4dce4cf627115645">00100</a> <a class="code" href="class_c_hello_world_basic_app_ui.html#a3f0e9dfa830c56bb4dce4cf627115645">CHelloWorldBasicAppUi::CHelloWorldBasicAppUi</a>()
<a name="l00101"></a>00101 {
<a name="l00102"></a>00102 <span class="comment">// No implementation required</span>
<a name="l00103"></a>00103 }
<a name="l00104"></a>00104
<a name="l00105"></a>00105 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00106"></a>00106 <span class="comment">// CHelloWorldBasicAppUi::~CHelloWorldBasicAppUi()</span>
<a name="l00107"></a>00107 <span class="comment">// Destructor.</span>
<a name="l00108"></a>00108 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00109"></a>00109 <span class="comment">//</span>
<a name="l00110"></a><a class="code" href="class_c_hello_world_basic_app_ui.html#acf8d91f8b2685a50f15b34be69c24562">00110</a> <a class="code" href="class_c_hello_world_basic_app_ui.html#acf8d91f8b2685a50f15b34be69c24562">CHelloWorldBasicAppUi::~CHelloWorldBasicAppUi</a>()
<a name="l00111"></a>00111 {
<a name="l00112"></a>00112 <span class="keywordflow">if</span> ( iAppView )
<a name="l00113"></a>00113 {
<a name="l00114"></a>00114 <span class="keyword">delete</span> iAppView;
<a name="l00115"></a>00115 iAppView = NULL;
<a name="l00116"></a>00116 }
<a name="l00117"></a>00117 }
<a name="l00118"></a>00118
<a name="l00119"></a>00119 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00120"></a>00120 <span class="comment">// CHelloWorldBasicAppUi::HandleCommandL()</span>
<a name="l00121"></a>00121 <span class="comment">// Takes care of command handling.</span>
<a name="l00122"></a>00122 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00123"></a>00123 <span class="comment">//</span>
<a name="l00124"></a>00124 <span class="keywordtype">void</span> CHelloWorldBasicAppUi::HandleCommandL( TInt aCommand )
<a name="l00125"></a>00125 {
<a name="l00126"></a>00126 <span class="comment">// clear possible old user-given text</span>
<a name="l00127"></a>00127 <span class="keywordflow">if</span> (iAppView-><a class="code" href="class_c_hello_world_basic_app_view.html#a06d9ceabab68ab2e9935b1af116b654c">GetText</a>().Size() > 0)
<a name="l00128"></a>00128 {
<a name="l00129"></a>00129 iAppView-><a class="code" href="class_c_hello_world_basic_app_view.html#a06d9ceabab68ab2e9935b1af116b654c">GetText</a>().Zero();
<a name="l00130"></a>00130 iAppView->DrawNow();
<a name="l00131"></a>00131 }
<a name="l00132"></a>00132
<a name="l00133"></a>00133 <span class="keywordflow">switch</span>( aCommand )
<a name="l00134"></a>00134 {
<a name="l00135"></a>00135 <span class="keywordflow">case</span> EEikCmdExit:
<a name="l00136"></a>00136 <span class="keywordflow">case</span> EAknSoftkeyExit:
<a name="l00137"></a>00137 Exit();
<a name="l00138"></a>00138 <span class="keywordflow">break</span>;
<a name="l00139"></a>00139
<a name="l00140"></a>00140 <span class="keywordflow">case</span> EHelloWorldBasicCommand1:
<a name="l00141"></a>00141 {
<a name="l00142"></a>00142 <span class="comment">// Load a string from the resource file and display it</span>
<a name="l00143"></a>00143 HBufC* textResource = StringLoader::LoadLC( R_HEWB_COMMAND1_TEXT );
<a name="l00144"></a>00144 CAknInformationNote* note = <span class="keyword">new</span> ( ELeave ) CAknInformationNote;
<a name="l00145"></a>00145
<a name="l00146"></a>00146 <span class="comment">// Show the information Note with</span>
<a name="l00147"></a>00147 <span class="comment">// textResource loaded with StringLoader.</span>
<a name="l00148"></a>00148 note->ExecuteLD( *textResource );
<a name="l00149"></a>00149
<a name="l00150"></a>00150 <span class="comment">// Pop HBuf from CleanUpStack and Destroy it.</span>
<a name="l00151"></a>00151 CleanupStack::PopAndDestroy( textResource );
<a name="l00152"></a>00152 }
<a name="l00153"></a>00153 <span class="keywordflow">break</span>;
<a name="l00154"></a>00154
<a name="l00155"></a>00155 <span class="keywordflow">case</span> EHelloWorldBasicCommand2:
<a name="l00156"></a>00156 {
<a name="l00157"></a>00157 RFs fsSession;
<a name="l00158"></a>00158 RFile rFile;
<a name="l00159"></a>00159
<a name="l00160"></a>00160 <span class="comment">// Connects a client process to the fileserver</span>
<a name="l00161"></a>00161 User::LeaveIfError(fsSession.Connect());
<a name="l00162"></a>00162 CleanupClosePushL(fsSession);
<a name="l00163"></a>00163
<a name="l00164"></a>00164 <span class="comment">//Open file where the stream text is</span>
<a name="l00165"></a>00165 User::LeaveIfError(rFile.Open(fsSession,KHelloFileName, EFileStreamText));
<a name="l00166"></a>00166 CleanupClosePushL(rFile);
<a name="l00167"></a>00167
<a name="l00168"></a>00168 <span class="comment">// copy stream from file to RFileStream object</span>
<a name="l00169"></a>00169 RFileReadStream inputFileStream(rFile);
<a name="l00170"></a>00170 CleanupClosePushL(inputFileStream);
<a name="l00171"></a>00171
<a name="l00172"></a>00172 <span class="comment">// HBufC descriptor is created from the RFileStream object.</span>
<a name="l00173"></a>00173 HBufC* fileData = HBufC::NewLC(inputFileStream, 32);
<a name="l00174"></a>00174
<a name="l00175"></a>00175 CAknInformationNote* note = <span class="keyword">new</span> ( ELeave ) CAknInformationNote;
<a name="l00176"></a>00176
<a name="l00177"></a>00177 <span class="comment">// Show the information Note</span>
<a name="l00178"></a>00178 note->ExecuteLD( *fileData );
<a name="l00179"></a>00179
<a name="l00180"></a>00180 <span class="comment">// Pop loaded resources from the cleanup stack:</span>
<a name="l00181"></a>00181 <span class="comment">// filedata, inputFileStream, rFile, fsSession</span>
<a name="l00182"></a>00182 CleanupStack::PopAndDestroy(4, &fsSession);
<a name="l00183"></a>00183 }
<a name="l00184"></a>00184 <span class="keywordflow">break</span>;
<a name="l00185"></a>00185
<a name="l00186"></a>00186 <span class="keywordflow">case</span> EHelloWorldBasicCommand3:
<a name="l00187"></a>00187 {
<a name="l00188"></a>00188 <span class="comment">// Load a string from the resources and use it as a default value</span>
<a name="l00189"></a>00189 HBufC* defaultText = StringLoader::LoadLC( R_HEWB_FILE_TEXT );
<a name="l00190"></a>00190
<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)
<a name="l00192"></a>00192 <a class="code" href="class_c_hello_world_query_dialog.html">CHelloWorldQueryDialog</a>( iAppView-><a class="code" href="class_c_hello_world_basic_app_view.html#a06d9ceabab68ab2e9935b1af116b654c">GetText</a>(), defaultText );
<a name="l00193"></a>00193
<a name="l00194"></a>00194 dlg->ExecuteLD( R_DIALOG_TEXT_EDIT_QUERY );
<a name="l00195"></a>00195 iAppView->DrawNow();
<a name="l00196"></a>00196
<a name="l00197"></a>00197 <span class="comment">// Pop HBuf from CleanUpStack and Destroy it.</span>
<a name="l00198"></a>00198 CleanupStack::PopAndDestroy( defaultText );
<a name="l00199"></a>00199 }
<a name="l00200"></a>00200 <span class="keywordflow">break</span>;
<a name="l00201"></a>00201
<a name="l00202"></a>00202 <span class="keywordflow">default</span>:
<a name="l00203"></a>00203 <span class="keywordflow">break</span>;
<a name="l00204"></a>00204 }
<a name="l00205"></a>00205 }
<a name="l00206"></a>00206 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00207"></a>00207 <span class="comment">// Called by framework when layout is changed.</span>
<a name="l00208"></a>00208 <span class="comment">// Passes the new client rectangle to the AppView</span>
<a name="l00209"></a>00209 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00210"></a>00210 <span class="comment">//</span>
<a name="l00211"></a>00211 <span class="keywordtype">void</span> CHelloWorldBasicAppUi::HandleResourceChangeL( TInt aType )
<a name="l00212"></a>00212 {
<a name="l00213"></a>00213 <span class="comment">// base-class call also</span>
<a name="l00214"></a>00214 CAknAppUi::HandleResourceChangeL(aType);
<a name="l00215"></a>00215 <span class="keywordflow">if</span> (aType == KEikDynamicLayoutVariantSwitch)
<a name="l00216"></a>00216 {
<a name="l00217"></a>00217 <span class="keywordflow">if</span> (iAppView)
<a name="l00218"></a>00218 iAppView->SetRect( ClientRect() );
<a name="l00219"></a>00219 }
<a name="l00220"></a>00220 }
<a name="l00221"></a>00221
<a name="l00222"></a>00222 <span class="comment">// End of File</span>
<a name="l00223"></a>00223
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