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Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_e_com_calculator_appui_8cpp_source.html
author Dominic Pinkman <dominic.pinkman@nokia.com>
Fri, 13 Aug 2010 16:47:46 +0100
changeset 14 578be2adaf3e
parent 6 43e37759235e
permissions -rw-r--r--
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
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<title>TB9.2 Example Applications: examples/ForumNokia/EComCalculator/client/src/EComCalculatorAppui.cpp Source File</title>
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<link href="tabs.css" rel="stylesheet" type="text/css"/>
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<link href="doxygen.css" rel="stylesheet" type="text/css"/>
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</head>
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<body>
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<!-- Generated by Doxygen 1.6.2 -->
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<h1>examples/ForumNokia/EComCalculator/client/src/EComCalculatorAppui.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
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<a name="l00002"></a>00002 <span class="comment"> * ============================================================================</span>
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<a name="l00003"></a>00003 <span class="comment"> *  Name     : CEComCalculatorAppUi from CEComCalculatorAppui.cpp</span>
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<a name="l00004"></a>00004 <span class="comment"> *  Part of  : EComCalculator</span>
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<a name="l00005"></a>00005 <span class="comment"> *  Created  : 29/05/2006 by Forum Nokia</span>
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<a name="l00006"></a>00006 <span class="comment"> *  Version  : 2.0</span>
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<a name="l00007"></a>00007 <span class="comment"> *  Copyright: Nokia Corporation</span>
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<a name="l00008"></a>00008 <span class="comment"> * ============================================================================</span>
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<a name="l00009"></a>00009 <span class="comment"> */</span>
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<a name="l00010"></a>00010
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<a name="l00011"></a>00011 <span class="preprocessor">#include &lt;avkon.hrh&gt;</span>
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<a name="l00012"></a>00012 <span class="preprocessor">#include &lt;aknnotewrappers.h&gt;</span>    <span class="comment">// CAknInformationNote</span>
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<a name="l00013"></a>00013 <span class="preprocessor">#include &quot;EComCalculatorAppUi.h&quot;</span>
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<a name="l00014"></a>00014 <span class="preprocessor">#include &quot;EComCalculatorAppView.h&quot;</span>
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<a name="l00015"></a>00015 <span class="preprocessor">#include &quot;EComCalculator.hrh&quot;</span>   <span class="comment">// menu commands</span>
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<a name="l00016"></a>00016 <span class="preprocessor">#include &quot;EComInterfaceDefinition.h&quot;</span>
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<a name="l00017"></a>00017
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<a name="l00018"></a>00018
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<a name="l00019"></a>00019 <span class="comment">// Names of plugin operations. Valid values are defined in plugin&#39;s</span>
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<a name="l00020"></a>00020 <span class="comment">// resource file. See</span>
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<a name="l00021"></a>00021 <span class="comment">//      ..\..\plugin\101F5465.RSS</span>
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<a name="l00022"></a>00022 <span class="comment">// Typically plugin provider gives these in the plugin documentation.</span>
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<a name="l00023"></a>00023 _LIT8(KSumOperationName,<span class="stringliteral">&quot;sum&quot;</span>);
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<a name="l00024"></a>00024 _LIT8(KMultiplyOperationName,<span class="stringliteral">&quot;multiply&quot;</span>);
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<a name="l00025"></a>00025 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KImplNotFound,<span class="stringliteral">&quot;Implementation not found: &quot;</span>);
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<a name="l00026"></a>00026 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KEComErr,<span class="stringliteral">&quot;ECOM error: &quot;</span>);
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<a name="l00027"></a>00027 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KEComErrCont,<span class="stringliteral">&quot;. Is the Calculation plugin installed?&quot;</span>);
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<a name="l00028"></a>00028
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<a name="l00029"></a>00029 <span class="keyword">const</span> TInt KOpNameLength=32;
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<a name="l00030"></a>00030 <span class="keyword">const</span> TInt KOpLength = 64;
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<a name="l00031"></a>00031 <span class="keyword">const</span> TInt KErrMsgLength = 128;
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<a name="l00032"></a>00032
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<a name="l00033"></a>00033
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<a name="l00034"></a>00034 <span class="comment">// Perform the second phase construction. This is allowed to leave.</span>
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<a name="l00035"></a><a class="code" href="class_c_e_com_calculator_app_ui.html#a895c22e48cfabbb49e2ee7b52c2f25d6">00035</a> <span class="keywordtype">void</span> <a class="code" href="class_c_e_com_calculator_app_ui.html#a895c22e48cfabbb49e2ee7b52c2f25d6">CEComCalculatorAppUi::ConstructL</a>()
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<a name="l00036"></a>00036     {
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<a name="l00037"></a>00037     BaseConstructL(EAknEnableSkin);
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<a name="l00038"></a>00038
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<a name="l00039"></a>00039     <span class="comment">// Create the view. Note that the view in this example is not CAknView,</span>
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<a name="l00040"></a>00040     <span class="comment">// but a simple Avkon UI compound control.</span>
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<a name="l00041"></a>00041     iAppView = <a class="code" href="class_c_e_com_calculator_app_view.html#a684da4b24db80dcf7dc41768e59d1435">CEComCalculatorAppView::NewL</a>(ClientRect());
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<a name="l00042"></a>00042
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<a name="l00043"></a>00043     <span class="comment">// Add the view to control stack so that it is able to receive key events.</span>
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<a name="l00044"></a>00044     <span class="comment">// The CEComCalculatorAppView handles them in the OfferKeyEventL method.</span>
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<a name="l00045"></a>00045     AddToStackL(iAppView);
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<a name="l00046"></a>00046     }
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<a name="l00047"></a>00047
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<a name="l00048"></a>00048 <span class="comment">// Construct the AppUi. This may not leave.</span>
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<a name="l00049"></a><a class="code" href="class_c_e_com_calculator_app_ui.html#a1184b0545d8fd1610a1fb7afd6300f04">00049</a> <a class="code" href="class_c_e_com_calculator_app_ui.html#a1184b0545d8fd1610a1fb7afd6300f04">CEComCalculatorAppUi::CEComCalculatorAppUi</a>()
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<a name="l00050"></a>00050     {
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<a name="l00051"></a>00051     <span class="comment">// No implementation required</span>
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<a name="l00052"></a>00052     }
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<a name="l00053"></a>00053
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<a name="l00054"></a>00054 <span class="comment">// Destructor. Release reserved resources.</span>
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<a name="l00055"></a><a class="code" href="class_c_e_com_calculator_app_ui.html#a69fa3e3f4e5835e6bc9caacdf2f72878">00055</a> <a class="code" href="class_c_e_com_calculator_app_ui.html#a69fa3e3f4e5835e6bc9caacdf2f72878">CEComCalculatorAppUi::~CEComCalculatorAppUi</a>()
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<a name="l00056"></a>00056     {
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<a name="l00057"></a>00057     <span class="keywordflow">if</span> (iAppView)
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<a name="l00058"></a>00058         {
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<a name="l00059"></a>00059         <span class="comment">// Remember to remove the view from control stack.</span>
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<a name="l00060"></a>00060         iEikonEnv-&gt;RemoveFromStack(iAppView);
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<a name="l00061"></a>00061         }
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<a name="l00062"></a>00062
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<a name="l00063"></a>00063     <span class="keyword">delete</span> iAppView;
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<a name="l00064"></a>00064     iAppView = NULL;
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<a name="l00065"></a>00065
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<a name="l00066"></a>00066 <span class="preprocessor">#ifdef __SERIES60_3X__</span>
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<a name="l00067"></a>00067 <span class="preprocessor"></span>    REComSession::FinalClose();
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<a name="l00068"></a>00068 <span class="preprocessor">#endif</span>
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<a name="l00069"></a>00069 <span class="preprocessor"></span>    }
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<a name="l00070"></a>00070
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<a name="l00071"></a>00071 <span class="comment">// Handle menu commands. The commands are defined in EComCalculator.hrh</span>
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<a name="l00072"></a><a class="code" href="class_c_e_com_calculator_app_ui.html#ad563dcdda58399fcf1516e026dd371e7">00072</a> <span class="keywordtype">void</span> <a class="code" href="class_c_e_com_calculator_app_ui.html#ad563dcdda58399fcf1516e026dd371e7">CEComCalculatorAppUi::HandleCommandL</a>(TInt aCommand)
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<a name="l00073"></a>00073     {
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<a name="l00074"></a>00074     <span class="keywordflow">switch</span>(aCommand)
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<a name="l00075"></a>00075         {
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<a name="l00076"></a>00076     <span class="keywordflow">case</span> ECalculateSumCmd:
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<a name="l00077"></a>00077     <span class="keywordflow">case</span> ECalculateMultiplyCmd:
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<a name="l00078"></a>00078         CalculateL(aCommand);
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<a name="l00079"></a>00079         <span class="keywordflow">break</span>;
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<a name="l00080"></a>00080
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<a name="l00081"></a>00081     <span class="keywordflow">case</span> EAknSoftkeyExit:
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<a name="l00082"></a>00082     <span class="keywordflow">case</span> EEikCmdExit:
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<a name="l00083"></a>00083         Exit();
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<a name="l00084"></a>00084         <span class="keywordflow">break</span>;
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<a name="l00085"></a>00085
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<a name="l00086"></a>00086     <span class="keywordflow">default</span>:
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<a name="l00087"></a>00087         <span class="keywordflow">break</span>;
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    98
 
<a name="l00088"></a>00088         }
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    99
 
<a name="l00089"></a>00089     }
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   100
 
<a name="l00090"></a>00090
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   101
 
<a name="l00091"></a>00091 <span class="comment">// Perform calculation and tell the view to show the result.</span>
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<a name="l00092"></a>00092 <span class="keywordtype">void</span> CEComCalculatorAppUi::CalculateL(TInt aCommand)
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   103
 
<a name="l00093"></a>00093     {
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   104
 
<a name="l00094"></a>00094     TBuf8&lt;KOpNameLength&gt; operationName; <span class="comment">// Data used in ECOM resolution.</span>
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   105
 
<a name="l00095"></a>00095                              <span class="comment">// Either &quot;sum&quot; or &quot;multiply&quot;</span>
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   106
 
<a name="l00096"></a>00096     TReal A, B, calcResult;
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   107
 
<a name="l00097"></a>00097     <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KFailedA,<span class="stringliteral">&quot;Failed. A is not a valid number.&quot;</span>);
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<a name="l00098"></a>00098     <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KFailedB,<span class="stringliteral">&quot;Failed. B is not a valid number.&quot;</span>);
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   109
 
<a name="l00099"></a>00099
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   110
 
<a name="l00100"></a>00100     <span class="comment">// Gather required info to perform ECOM interface call.</span>
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   111
 
<a name="l00101"></a>00101     <span class="keywordflow">if</span>( iAppView-&gt;<a class="code" href="class_c_e_com_calculator_app_view.html#a26b6acd4cea10ef2c8bd4724f284c6f9">GetA</a>(A) != KErrNone )
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   112
 
<a name="l00102"></a>00102         {
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   113
 
<a name="l00103"></a>00103         ShowNoteL(KFailedA);
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   114
 
<a name="l00104"></a>00104         <span class="keywordflow">return</span>;
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<a name="l00105"></a>00105         }
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<a name="l00106"></a>00106     <span class="keywordflow">if</span>( iAppView-&gt;<a class="code" href="class_c_e_com_calculator_app_view.html#a8ade2ea0aa3f0ca7f99086ab3fc86433">GetB</a>(B) != KErrNone )
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<a name="l00107"></a>00107         {
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<a name="l00108"></a>00108         ShowNoteL(KFailedB);
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<a name="l00109"></a>00109         <span class="keywordflow">return</span>;
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<a name="l00110"></a>00110         }
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   121
 
<a name="l00111"></a>00111
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<a name="l00112"></a>00112     <span class="keywordflow">if</span>(aCommand == ECalculateSumCmd)
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<a name="l00113"></a>00113         {
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<a name="l00114"></a>00114         operationName.Append(KSumOperationName);      <span class="comment">// &quot;sum&quot;</span>
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<a name="l00115"></a>00115         }
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<a name="l00116"></a>00116     <span class="keywordflow">else</span>
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<a name="l00117"></a>00117         {
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<a name="l00118"></a>00118         operationName.Append(KMultiplyOperationName); <span class="comment">// &quot;multiply&quot;</span>
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<a name="l00119"></a>00119         }
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   130
 
<a name="l00120"></a>00120
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<a name="l00121"></a>00121     <span class="keywordflow">if</span>(DoEComCalculationL(operationName, A, B, calcResult) == KErrNone)
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<a name="l00122"></a>00122         iAppView-&gt;<a class="code" href="class_c_e_com_calculator_app_view.html#ab71438832dbc68110ebaefd1c42c5c19">ShowResultL</a>(operationName, calcResult);
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<a name="l00123"></a>00123     }
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   134
 
<a name="l00124"></a>00124
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   135
 
<a name="l00125"></a>00125 <span class="comment">// Let the ECOM plugin do the calculation.</span>
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<a name="l00126"></a>00126 TInt CEComCalculatorAppUi::DoEComCalculationL(<span class="keyword">const</span> TDesC8&amp; aOperationName,
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<a name="l00127"></a>00127     TReal aA, TReal aB, TReal&amp; aResult)
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<a name="l00128"></a>00128     {
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<a name="l00129"></a>00129         <span class="comment">// Create instance of our own ECOM interface definition. The NewL</span>
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<a name="l00130"></a>00130         <span class="comment">// method will ask ECOM framework to find appropriate implementation</span>
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<a name="l00131"></a>00131         <span class="comment">// for the interface. The file</span>
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<a name="l00132"></a>00132         <span class="comment">//     ..\..\interface\EComInterfaceDefinition.inl</span>
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<a name="l00133"></a>00133         <span class="comment">// defines, how the framework will search. It uses default resolver.</span>
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<a name="l00134"></a>00134         <span class="comment">//</span>
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<a name="l00135"></a>00135         <span class="comment">// The NewL fails, if there is no plugin installed in the system,</span>
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<a name="l00136"></a>00136         <span class="comment">// or if an implementation for aOperationName cannot be found</span>
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<a name="l00137"></a>00137         <span class="comment">// (resolved).</span>
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<a name="l00138"></a>00138         <span class="comment">//</span>
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   149
 
<a name="l00139"></a>00139         <span class="comment">//  - aOperationName must match one of the names of plugin</span>
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<a name="l00140"></a>00140         <span class="comment">//    implementations. The valid names are defined in plugin</span>
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<a name="l00141"></a>00141         <span class="comment">//    implementation resource file, see</span>
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<a name="l00142"></a>00142         <span class="comment">//        ..\..\plugin\101F5465.RSS</span>
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<a name="l00143"></a>00143         <span class="comment">//    The field &quot;default_data&quot; specifies name for a implementation.</span>
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<a name="l00144"></a>00144         <span class="comment">//    (In more detail, it is the identification data used by resolver.</span>
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<a name="l00145"></a>00145         <span class="comment">//    Default resolver used in this example just checks the matching</span>
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<a name="l00146"></a>00146         <span class="comment">//    string.)</span>
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<a name="l00147"></a>00147         <span class="comment">//</span>
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<a name="l00148"></a>00148         <span class="comment">//  - In emulator, the plugin implementation project must be built.</span>
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<a name="l00149"></a>00149         <span class="comment">//    In device, the plugin dll providing implementations must be</span>
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<a name="l00150"></a>00150         <span class="comment">//    installed. See</span>
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<a name="l00151"></a>00151         <span class="comment">//        ..\..\plugin.</span>
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   162
 
<a name="l00152"></a>00152         <span class="comment">//    If there is no plugin available, the ECOM framework causes leave.</span>
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<a name="l00153"></a>00153         <span class="comment">//</span>
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<a name="l00154"></a>00154         <a class="code" href="class_c_calculation_interface_definition.html">CCalculationInterfaceDefinition</a>* calculateInterface = NULL;
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<a name="l00155"></a>00155         TRAPD(error,
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<a name="l00156"></a>00156             calculateInterface =
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<a name="l00157"></a>00157                 <a class="code" href="class_c_calculation_interface_definition.html#a0c188739edb316bd3a93843f6d997593">CCalculationInterfaceDefinition::NewL</a>(aOperationName);
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<a name="l00158"></a>00158         )
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   169
 
<a name="l00159"></a>00159         <span class="keywordflow">if</span>( error )
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<a name="l00160"></a>00160         {
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<a name="l00161"></a>00161             HandleEComInitializationErrorL(error, aOperationName);
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<a name="l00162"></a>00162             <span class="keywordflow">return</span> error;
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<a name="l00163"></a>00163         }
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<a name="l00164"></a>00164         CleanupStack::PushL(calculateInterface);
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<a name="l00165"></a>00165
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<a name="l00166"></a>00166         <span class="comment">// Use given interface implementation to perform calculation.</span>
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<a name="l00167"></a>00167         aResult = calculateInterface-&gt;<a class="code" href="class_c_calculation_interface_definition.html#aa0f96f52f4d5b6c55d7aa6b0aea0c3b7">Calculate</a>(aA, aB);
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<a name="l00168"></a>00168
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<a name="l00169"></a>00169         CleanupStack::PopAndDestroy(calculateInterface);
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<a name="l00170"></a>00170         <span class="keywordflow">return</span> KErrNone;
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<a name="l00171"></a>00171     }
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<a name="l00172"></a>00172
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<a name="l00173"></a>00173 <span class="comment">// Show error note for ECOM errors</span>
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<a name="l00174"></a>00174 <span class="keywordtype">void</span> CEComCalculatorAppUi::HandleEComInitializationErrorL(TInt aError,
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<a name="l00175"></a>00175     <span class="keyword">const</span> TDesC8&amp; aOperationName)<span class="keyword"> const</span>
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<a name="l00176"></a>00176 <span class="keyword">    </span>{
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   187
 
<a name="l00177"></a>00177
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<a name="l00178"></a>00178     TBuf&lt;KOpLength&gt; operationName16bit;
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<a name="l00179"></a>00179     TBuf&lt;KErrMsgLength&gt; errorMsg;
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<a name="l00180"></a>00180     operationName16bit.Copy(aOperationName);
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<a name="l00181"></a>00181
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<a name="l00182"></a>00182     <span class="keywordflow">if</span>(aError == KErrNotFound)  <span class="comment">// Plugin implementation not found (no match)</span>
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<a name="l00183"></a>00183         {
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<a name="l00184"></a>00184         errorMsg.Append(KImplNotFound);
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<a name="l00185"></a>00185         errorMsg.Append(operationName16bit);
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<a name="l00186"></a>00186         ShowNoteL(errorMsg);
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<a name="l00187"></a>00187         }
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<a name="l00188"></a>00188     <span class="keywordflow">else</span> <span class="keywordflow">if</span>(aError != KErrNone) <span class="comment">// Some other ECOM error. See in SDK help</span>
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<a name="l00189"></a>00189         {
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<a name="l00190"></a>00190         errorMsg.Append(KEComErr);
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<a name="l00191"></a>00191         errorMsg.AppendNum(aError);
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<a name="l00192"></a>00192         errorMsg.Append(KEComErrCont);
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<a name="l00193"></a>00193         ShowNoteL(errorMsg);
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<a name="l00194"></a>00194         }
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<a name="l00195"></a>00195     }
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<a name="l00196"></a>00196
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<a name="l00197"></a>00197 <span class="comment">// Show a note. Note that successive frequent calls to this method results in</span>
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<a name="l00198"></a>00198 <span class="comment">// showing the latest message only.</span>
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<a name="l00199"></a>00199 <span class="keywordtype">void</span> CEComCalculatorAppUi::ShowNoteL(<span class="keyword">const</span> TDesC&amp; aMessage)<span class="keyword"> const</span>
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<a name="l00200"></a>00200 <span class="keyword">    </span>{
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<a name="l00201"></a>00201
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<a name="l00202"></a>00202     CAknInformationNote* note = <span class="keyword">new</span>(ELeave)CAknInformationNote;
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<a name="l00203"></a>00203     note-&gt;ExecuteLD(aMessage); <span class="comment">// Deletes itself, when returns</span>
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<a name="l00204"></a>00204     }
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<a name="l00205"></a>00205
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<a name="l00206"></a><a class="code" href="class_c_e_com_calculator_app_ui.html#a65f8e6daaf8c5545eb64784b4d59495c">00206</a> <span class="keywordtype">void</span> <a class="code" href="class_c_e_com_calculator_app_ui.html#a65f8e6daaf8c5545eb64784b4d59495c">CEComCalculatorAppUi::HandleResourceChangeL</a>(TInt aType)
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<a name="l00207"></a>00207     {
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<a name="l00208"></a>00208     <a class="code" href="class_c_e_com_calculator_app_ui.html#a65f8e6daaf8c5545eb64784b4d59495c">CAknAppUi::HandleResourceChangeL</a>(aType); <span class="comment">//call to upper class</span>
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<a name="l00209"></a>00209
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<a name="l00210"></a>00210     <span class="comment">// ADDED FOR SCALABLE UI SUPPORT</span>
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<a name="l00211"></a>00211     <span class="comment">// *****************************</span>
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<a name="l00212"></a>00212     <span class="keywordflow">if</span> ( aType == KEikDynamicLayoutVariantSwitch )
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<a name="l00213"></a>00213         {
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<a name="l00214"></a>00214         iAppView-&gt;SetRect( ClientRect() );
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<a name="l00215"></a>00215         }
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<a name="l00216"></a>00216     }
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</pre></div></div>
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<hr size="1"/><address style="text-align: right;"><small>Generated by&nbsp;
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<a href="http://www.doxygen.org/index.html">
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<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.2 </small></address>
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</body>
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</html>
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