TB9.2 Example Applications: examples/S60CppExamples/helloworldbasic/src/helloworldbasicappui.cpp Source File

00001 /*
+00002 * ==============================================================================
+00003 *  Name        : helloworldbasicappui.cpp
+00004 *  Part of     : Helloworldbasic
+00005 *  Interface   :
+00006 *  Description :
+00007 *  Version     :
+00008 *
+00009 *  Copyright (c) 2005-2006 Nokia Corporation.
+00010 *  This material, including documentation and any related
+00011 *  computer programs, is protected by copyright controlled by
+00012 *  Nokia Corporation.
+00013 * ==============================================================================
+00014 */
+00015 
+00016 // INCLUDE FILES
+00017 #include <avkon.hrh>
+00018 #include <aknnotewrappers.h>
+00019 #include <stringloader.h>
+00020 #include <HelloWorldBasic.rsg>
+00021 #include <f32file.h>
+00022 #include <s32file.h>
+00023 
+00024 #include "HelloWorldBasic.pan"
+00025 #include "HelloWorldBasicAppUi.h"
+00026 #include "HelloWorldBasicAppView.h"
+00027 #include "HelloWorldBasic.hrh"
+00028 #include "HelloWorldBasicQueryDialog.h"
+00029 
+00030 _LIT( KHelloFileName, "Hello.txt" );
+00031 
+00032 // ============================ MEMBER FUNCTIONS ===============================
+00033 
+00034 
+00035 // -----------------------------------------------------------------------------
+00036 // CHelloWorldBasicAppUi::ConstructL()
+00037 // Symbian 2nd phase constructor can leave.
+00038 // -----------------------------------------------------------------------------
+00039 //
+00040 void CHelloWorldBasicAppUi::ConstructL()
+00041     {
+00042     // Initialise app UI with standard value.
+00043     BaseConstructL(CAknAppUi::EAknEnableSkin);
+00044 
+00045     // Here the Hello.txt file is created. Because HelloWorld application is
+00046     // localized to various languages, the Hello.txt-file is created every time
+00047     // with current localization language
+00048     //
+00049     RFs fsSession;
+00050     User::LeaveIfError(fsSession.Connect());
+00051     CleanupClosePushL( fsSession );
+00052     TInt objectsInStack = 1;
+00053 
+00054     #if defined(__WINS__) || defined(__WINSCW__)
+00055     // create private folder, when testing in emulator.
+00056     // ignore the return value; if this fails, then file.Replace() will fail
+00057     // and a warning note will be printed.
+00058     //
+00059     fsSession.CreatePrivatePath(EDriveC);
+00060     #endif
+00061 
+00062     RFile file;
+00063 
+00064     // Create a file to write the text to
+00065     TInt err = file.Replace(fsSession, KHelloFileName, EFileWrite );
+00066     if (KErrNone == err)
+00067         {
+00068         CleanupClosePushL( file );
+00069 
+00070         RFileWriteStream outputFileStream( file );
+00071         CleanupClosePushL( outputFileStream );
+00072 
+00073         // Load a string from the resource file and stream it to file
+00074         HBufC* textResource = StringLoader::LoadLC( R_HEWB_FILE_TEXT );
+00075         objectsInStack += 3; // file, outputFileStream, testResource
+00076 
+00077         outputFileStream << *textResource;
+00078         }
+00079     else
+00080         {
+00081         _LIT(KFileWriteFailed,"Writing file %S failed: error %d");
+00082         CAknWarningNote* note = new ( ELeave ) CAknWarningNote(ETrue);
+00083 
+00084         TBuf<64> text;
+00085         text.Format(KFileWriteFailed, &KHelloFileName, err);
+00086         note->ExecuteLD( text );
+00087         }
+00088 
+00089     CleanupStack::PopAndDestroy(objectsInStack, &fsSession);
+00090 
+00091     // Create view object
+00092     iAppView = CHelloWorldBasicAppView::NewL( ClientRect() );
+00093 
+00094     }
+00095 // -----------------------------------------------------------------------------
+00096 // CHelloWorldBasicAppUi::CHelloWorldBasicAppUi()
+00097 // C++ default constructor can NOT contain any code, that might leave.
+00098 // -----------------------------------------------------------------------------
+00099 //
+00100 CHelloWorldBasicAppUi::CHelloWorldBasicAppUi()
+00101     {
+00102     // No implementation required
+00103     }
+00104 
+00105 // -----------------------------------------------------------------------------
+00106 // CHelloWorldBasicAppUi::~CHelloWorldBasicAppUi()
+00107 // Destructor.
+00108 // -----------------------------------------------------------------------------
+00109 //
+00110 CHelloWorldBasicAppUi::~CHelloWorldBasicAppUi()
+00111     {
+00112     if ( iAppView )
+00113         {
+00114         delete iAppView;
+00115         iAppView = NULL;
+00116         }
+00117     }
+00118 
+00119 // -----------------------------------------------------------------------------
+00120 // CHelloWorldBasicAppUi::HandleCommandL()
+00121 // Takes care of command handling.
+00122 // -----------------------------------------------------------------------------
+00123 //
+00124 void CHelloWorldBasicAppUi::HandleCommandL( TInt aCommand )
+00125     {
+00126     // clear possible old user-given text
+00127     if (iAppView->GetText().Size() > 0)
+00128         {
+00129         iAppView->GetText().Zero();
+00130         iAppView->DrawNow();
+00131         }
+00132 
+00133     switch( aCommand )
+00134         {
+00135         case EEikCmdExit:
+00136         case EAknSoftkeyExit:
+00137             Exit();
+00138             break;
+00139 
+00140         case EHelloWorldBasicCommand1:
+00141             {
+00142             // Load a string from the resource file and display it
+00143             HBufC* textResource = StringLoader::LoadLC( R_HEWB_COMMAND1_TEXT );
+00144             CAknInformationNote* note = new ( ELeave ) CAknInformationNote;
+00145 
+00146             // Show the information Note with
+00147             // textResource loaded with StringLoader.
+00148             note->ExecuteLD( *textResource );
+00149 
+00150             // Pop HBuf from CleanUpStack and Destroy it.
+00151             CleanupStack::PopAndDestroy( textResource );
+00152             }
+00153             break;
+00154 
+00155         case EHelloWorldBasicCommand2:
+00156             {
+00157             RFs fsSession;
+00158             RFile rFile;
+00159 
+00160             // Connects a client process to the fileserver
+00161             User::LeaveIfError(fsSession.Connect());
+00162             CleanupClosePushL(fsSession);
+00163 
+00164             //Open file where the stream text is
+00165             User::LeaveIfError(rFile.Open(fsSession,KHelloFileName, EFileStreamText));
+00166             CleanupClosePushL(rFile);
+00167 
+00168             // copy stream from file to RFileStream object
+00169             RFileReadStream inputFileStream(rFile);
+00170             CleanupClosePushL(inputFileStream);
+00171 
+00172             // HBufC descriptor is created from the RFileStream object.
+00173             HBufC* fileData = HBufC::NewLC(inputFileStream, 32);
+00174 
+00175             CAknInformationNote* note = new ( ELeave ) CAknInformationNote;
+00176 
+00177             // Show the information Note
+00178             note->ExecuteLD( *fileData );
+00179 
+00180             // Pop loaded resources from the cleanup stack:
+00181             // filedata, inputFileStream, rFile, fsSession
+00182             CleanupStack::PopAndDestroy(4, &fsSession);
+00183             }
+00184             break;
+00185 
+00186         case EHelloWorldBasicCommand3:
+00187             {
+00188             // Load a string from the resources and use it as a default value
+00189             HBufC* defaultText = StringLoader::LoadLC( R_HEWB_FILE_TEXT );
+00190 
+00191             CHelloWorldQueryDialog *dlg = new (ELeave)
+00192                 CHelloWorldQueryDialog( iAppView->GetText(), defaultText );
+00193 
+00194             dlg->ExecuteLD( R_DIALOG_TEXT_EDIT_QUERY );
+00195             iAppView->DrawNow();
+00196 
+00197             // Pop HBuf from CleanUpStack and Destroy it.
+00198             CleanupStack::PopAndDestroy( defaultText );
+00199             }
+00200             break;
+00201 
+00202         default:
+00203             break;
+00204         }
+00205     }
+00206 // -----------------------------------------------------------------------------
+00207 //  Called by framework when layout is changed.
+00208 //  Passes the new client rectangle to the AppView
+00209 // -----------------------------------------------------------------------------
+00210 //
+00211 void CHelloWorldBasicAppUi::HandleResourceChangeL( TInt aType )
+00212 {
+00213     // base-class call also
+00214     CAknAppUi::HandleResourceChangeL(aType);
+00215     if (aType == KEikDynamicLayoutVariantSwitch)
+00216         {
+00217         if (iAppView)
+00218             iAppView->SetRect( ClientRect() );
+00219         }
+00220 }
+00221 
+00222 // End of File
+00223 
+