examples/S60CppExamples/ClientServerAsync/doc/csasyncrequesthandler_8cpp-source.html

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00012 S60 5th Edition SDK 
Example Applications Guide
 

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00020 
csasyncrequesthandler.cpp
class="fragment">
class="fragment">"l00001">00001 class="comment">/*
00021 00002 * ==============================================================================
00022 00003 *  Name        : csasyncrequesthandler.cpp
00023 00004 *  Part of     : CSAsync
00024 00005 *  Interface   :
00025 00006 *  Description :
00026 00007 *  Version     :
00027 00008 *
00028 00009 *  Copyright (c) 2004-2006 Nokia Corporation.
00029 00010 *  This material, including documentation and any related
00030 00011 *  computer programs, is protected by copyright controlled by
00031 00012 *  Nokia Corporation.
00032 00013 * ==============================================================================
00033 00014 */
00034 "l00015">00015 
00035 "l00016">00016 class="comment">// INCLUDE FILES
00036 "l00017">00017 class="preprocessor">#include <e32svr.h>
00037 "l00018">00018 
00038 "l00019">00019 class="preprocessor">#include "CSAsync.pan"
00039 "l00020">00020 class="preprocessor">#include "CSAsyncRequestHandler.h"
00040 "l00021">00021 class="preprocessor">#include "ClientServerCommon.h"
00041 "l00022">00022 class="preprocessor">#include "AsyncTimeObserver.h"
00042 "l00023">00023 
00043 "l00024">00024 class="comment">// ========================= MEMBER FUNCTIONS ==================================
00044 "l00025">00025 
00045 "l00026">00026 class="comment">// -----------------------------------------------------------------------------
00046 "l00027">00027 class="comment">// CCSAsyncRequestHandler::NewL()
00047 "l00028">00028 class="comment">// Two-phased constructor.
00048 "l00029">00029 class="comment">// -----------------------------------------------------------------------------
00049 "l00030">class="code" href="class_c_c_s_async_request_handler.html#e27bf7140859a754f6f06c51dbbd1b12">00030 class="code" href="class_c_c_s_async_request_handler.html">CCSAsyncRequestHandler* class="code" href="class_c_c_s_async_request_handler.html#e27bf7140859a754f6f06c51dbbd1b12">CCSAsyncRequestHandler::NewL(
00050 "l00031">00031                                                class="code" href="class_m_async_time_observer.html">MAsyncTimeObserver& aObserver )
00051 "l00032">00032     {
00052 "l00033">00033     class="code" href="class_c_c_s_async_request_handler.html">CCSAsyncRequestHandler* class="keyword">self = class="code" href="class_c_c_s_async_request_handler.html#aea906e05bc2fa2a15b3152501b0f12e">NewLC( aObserver );
00053 "l00034">00034     CleanupStack::Pop( class="keyword">self );
00054 "l00035">00035     class="keywordflow">return( self ) ;
00055 "l00036">00036     }
00056 "l00037">00037 
00057 "l00038">00038 class="comment">// -----------------------------------------------------------------------------
00058 "l00039">00039 class="comment">// CCSAsyncRequestHandler::NewLC()
00059 "l00040">00040 class="comment">// Two-phased constructor.
00060 "l00041">00041 class="comment">// -----------------------------------------------------------------------------
00061 "l00042">class="code" href="class_c_c_s_async_request_handler.html#aea906e05bc2fa2a15b3152501b0f12e">00042 class="code" href="class_c_c_s_async_request_handler.html">CCSAsyncRequestHandler* class="code" href="class_c_c_s_async_request_handler.html#aea906e05bc2fa2a15b3152501b0f12e">CCSAsyncRequestHandler::NewLC(
00062 "l00043">00043                                                class="code" href="class_m_async_time_observer.html">MAsyncTimeObserver& aObserver )
00063 "l00044">00044     {
00064 "l00045">00045     class="code" href="class_c_c_s_async_request_handler.html">CCSAsyncRequestHandler* class="keyword">self =
00065 "l00046">00046         class="keyword">new ( ELeave ) class="code" href="class_c_c_s_async_request_handler.html#7f4ba53fa1861a0a692566cdfa024cd4">CCSAsyncRequestHandler( aObserver );
00066 "l00047">00047     CleanupStack::PushL( class="keyword">self );
00067 "l00048">00048     class="keyword">self->ConstructL();
00068 "l00049">00049     class="keywordflow">return class="keyword">self;
00069 "l00050">00050     }
00070 "l00051">00051 
00071 "l00052">00052 class="comment">// -----------------------------------------------------------------------------
00072 "l00053">00053 class="comment">// CCSAsyncRequestHandler::ConstructL()
00073 "l00054">00054 class="comment">// Symbian 2nd phase constructor can leave.
00074 "l00055">00055 class="comment">// -----------------------------------------------------------------------------
00075 "l00056">00056 class="comment">//
00076 "l00057">class="code" href="class_c_c_s_async_request_handler.html#9ce34ba0b947863222da3c63d0481044">00057 class="keywordtype">void class="code" href="class_c_c_s_async_request_handler.html#9ce34ba0b947863222da3c63d0481044">CCSAsyncRequestHandler::ConstructL()
00077 "l00058">00058     {
00078 "l00059">00059     User::LeaveIfError( class="code" href="class_c_c_s_async_request_handler.html#d8033daa9b951c54149345b6871648bb">iSession.class="code" href="class_r_time_server_session.html#0a20867f2777f1db7349df290a5e6112">Connect() );
00079 "l00060">00060     }
00080 "l00061">00061 
00081 "l00062">00062 class="comment">// -----------------------------------------------------------------------------
00082 "l00063">00063 class="comment">// CCSAsyncRequestHandler::CCSAsyncRequestHandler()
00083 "l00064">00064 class="comment">// C++ default constructor can NOT contain any code, that might leave.
00084 "l00065">00065 class="comment">// -----------------------------------------------------------------------------
00085 "l00066">class="code" href="class_c_c_s_async_request_handler.html#7f4ba53fa1861a0a692566cdfa024cd4">00066 class="code" href="class_c_c_s_async_request_handler.html#7f4ba53fa1861a0a692566cdfa024cd4">CCSAsyncRequestHandler::CCSAsyncRequestHandler( class="code" href="class_m_async_time_observer.html">MAsyncTimeObserver& aObserver )
00086 "l00067">00067 : CActive( EPriorityStandard ), class="code" href="class_c_c_s_async_request_handler.html#5598d19cc10719afd28055422087a200">iObserver( aObserver )
00087 "l00068">00068     {
00088 "l00069">00069     CActiveScheduler::Add( class="keyword">this );
00089 "l00070">00070     }
00090 "l00071">00071 
00091 "l00072">00072 class="comment">// -----------------------------------------------------------------------------
00092 "l00073">00073 class="comment">// CCSAsyncRequestHandler::~CCSAsyncRequestHandler()
00093 "l00074">00074 class="comment">// Destructor.
00094 "l00075">00075 class="comment">// -----------------------------------------------------------------------------
00095 "l00076">00076 class="comment">//
00096 "l00077">class="code" href="class_c_c_s_async_request_handler.html#91aee909b7becabe937b696acc0c1590">00077 class="code" href="class_c_c_s_async_request_handler.html#91aee909b7becabe937b696acc0c1590">CCSAsyncRequestHandler::~CCSAsyncRequestHandler()
00097 "l00078">00078     {
00098 "l00079">00079     Cancel(); class="comment">// Causes call to DoCancel()
00099 "l00080">00080     class="code" href="class_c_c_s_async_request_handler.html#d8033daa9b951c54149345b6871648bb">iSession.Close();
00100 "l00081">00081     }
00101 "l00082">00082 
00102 "l00083">00083 class="comment">// -----------------------------------------------------------------------------
00103 "l00084">00084 class="comment">// CCSAsyncRequestHandler::RequestTime()
00104 "l00085">00085 class="comment">// Sends a request to the server for an update to the time.
00105 "l00086">00086 class="comment">// -----------------------------------------------------------------------------
00106 "l00087">00087 class="comment">//
00107 "l00088">class="code" href="class_c_c_s_async_request_handler.html#481d63e2f4e33b9cb8ed4680a965da25">00088 class="keywordtype">void class="code" href="class_c_c_s_async_request_handler.html#481d63e2f4e33b9cb8ed4680a965da25">CCSAsyncRequestHandler::RequestTime()
00108 "l00089">00089     {
00109 "l00090">00090     class="keywordflow">if ( !IsActive() )
00110 "l00091">00091         {
00111 "l00092">00092         class="code" href="class_c_c_s_async_request_handler.html#d8033daa9b951c54149345b6871648bb">iSession.class="code" href="class_r_time_server_session.html#0e65b7c45b7af042183f1c5525cfcc1b">RequestTime( class="code" href="class_c_c_s_async_request_handler.html#ab88bd4e7e44b5e05aab3f182f76db1f">iTime, iStatus );
00112 "l00093">00093         SetActive();
00113 "l00094">00094         }
00114 "l00095">00095     }
00115 "l00096">00096 
00116 "l00097">00097 class="comment">// -----------------------------------------------------------------------------
00117 "l00098">00098 class="comment">// CCSAsyncRequestHandler::CancelRequest()
00118 "l00099">00099 class="comment">// Cancels an outstanding request.
00119 "l00100">00100 class="comment">// -----------------------------------------------------------------------------
00120 "l00101">00101 class="comment">//
00121 "l00102">class="code" href="class_c_c_s_async_request_handler.html#63d7f6ab1c508b38c31d416e01f71a29">00102 class="keywordtype">void class="code" href="class_c_c_s_async_request_handler.html#63d7f6ab1c508b38c31d416e01f71a29">CCSAsyncRequestHandler::CancelRequest()
00122 "l00103">00103     {
00123 "l00104">00104     Cancel() ; class="comment">// Causes call to DoCancel()
00124 "l00105">00105     }
00125 "l00106">00106 
00126 "l00107">00107 class="comment">// -----------------------------------------------------------------------------
00127 "l00108">00108 class="comment">// CCSAsyncRequestHandler::RunL()
00128 "l00109">00109 class="comment">// Invoked to handle responses from the server.
00129 "l00110">00110 class="comment">// -----------------------------------------------------------------------------
00130 "l00111">00111 class="comment">//
00131 "l00112">class="code" href="class_c_c_s_async_request_handler.html#98dcd20e4dd117488a6a90dadd4dfac5">00112 class="keywordtype">void class="code" href="class_c_c_s_async_request_handler.html#98dcd20e4dd117488a6a90dadd4dfac5">CCSAsyncRequestHandler::RunL()
00132 "l00113">00113     {
00133 "l00114">00114     class="keywordflow">switch ( iStatus.Int() )
00134 "l00115">00115         {
00135 "l00116">00116         class="keywordflow">case ETimeServRequestTimeComplete:
00136 "l00117">00117             class="comment">// The server has completed the request, signalled the client
00137 "l00118">00118             class="comment">// thread and the clients active scheduler runs the active object.
00138 "l00119">00119             class="comment">// Now do something with it
00139 "l00120">00120             class="code" href="class_c_c_s_async_request_handler.html#5598d19cc10719afd28055422087a200">iObserver.class="code" href="class_m_async_time_observer.html#0f7e397559bb14d521856cfb636830df">HandleTimeUpdate();
00140 "l00121">00121             class="code" href="class_c_c_s_async_request_handler.html#481d63e2f4e33b9cb8ed4680a965da25">RequestTime();   class="comment">// Add this line to make the clock keep ticking
00141 "l00122">00122             break ;
00142 "l00123">00123 
00143 "l00124">00124         class="keywordflow">case KErrCancel:
00144 "l00125">00125             class="comment">// The request was canceled
00145 "l00126">00126             break ;
00146 "l00127">00127 
00147 "l00128">00128         class="keywordflow">case KErrNotReady:
00148 "l00129">00129             class="comment">// We requested a new time before completing the previous request
00149 "l00130">00130         class="keywordflow">default:
00150 "l00131">00131             User::Panic( KCSAsyncClient, ECSAsyncBadState ); class="comment">// Unexpected error
00151 "l00132">00132             class="keywordflow">break;
00152 "l00133">00133         }
00153 "l00134">00134     }
00154 "l00135">00135 
00155 "l00136">00136 class="comment">// -----------------------------------------------------------------------------
00156 "l00137">00137 class="comment">// CCSAsyncRequestHandler::DoCancel()
00157 "l00138">00138 class="comment">// Cancels any outstanding operation.
00158 "l00139">00139 class="comment">// -----------------------------------------------------------------------------
00159 "l00140">00140 class="comment">//
00160 "l00141">class="code" href="class_c_c_s_async_request_handler.html#79737b00f2b6a07492c7caf4220c6691">00141 class="keywordtype">void class="code" href="class_c_c_s_async_request_handler.html#79737b00f2b6a07492c7caf4220c6691">CCSAsyncRequestHandler::DoCancel()
00161 "l00142">00142     {
00162 "l00143">00143     class="code" href="class_c_c_s_async_request_handler.html#d8033daa9b951c54149345b6871648bb">iSession.class="code" href="class_r_time_server_session.html#52a5f2cddd36f215fea9c11e32ab88b8">CancelRequestTime();
00163 "l00144">00144     }
00164 "l00145">00145 
00165 "l00146">00146 class="comment">// -----------------------------------------------------------------------------
00166 "l00147">00147 class="comment">// CCSAsyncRequestHandler::Time() const
00167 "l00148">00148 class="comment">// Gets a copy of the last time received from the server.
00168 "l00149">00149 class="comment">// -----------------------------------------------------------------------------
00169 "l00150">00150 class="comment">//
00170 "l00151">class="code" href="class_c_c_s_async_request_handler.html#abd5ca40d94b3e8941d79e5362c038b2">00151 TTime class="code" href="class_c_c_s_async_request_handler.html#abd5ca40d94b3e8941d79e5362c038b2">CCSAsyncRequestHandler::Time()class="keyword"> const
00171 "l00152">00152 class="keyword">    {
00172 "l00153">00153     class="keywordflow">return class="code" href="class_c_c_s_async_request_handler.html#ab88bd4e7e44b5e05aab3f182f76db1f">iTime;
00173 "l00154">00154     }
00174 "l00155">00155 
00175 "l00156">00156 class="comment">// End of File
00176 

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