--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/idlehomescreen/xmluirendering/utils/src/xnecomhandler.cpp	Thu Dec 17 08:40:49 2009 +0200
@@ -0,0 +1,265 @@
+/*
+* Copyright (c) 2002-2004 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  Handles ecom plugins
+*
+*/
+
+
+
+// INCLUDE FILES
+#include    "xnecomhandler.h"
+#include    "xnpanic.h"
+#include    "xnarray.h"
+#include    "xnpointerarraywithownership.h"
+#include    <utf.h>
+#include    <ecom/ecom.h>
+#include    <ecom/implementationinformation.h>
+#include    <f32file.h>
+
+// EXTERNAL DATA STRUCTURES
+//extern  ?external_data;
+
+// EXTERNAL FUNCTION PROTOTYPES  
+//extern ?external_function( ?arg_type,?arg_type );
+
+// CONSTANTS
+//const ?type ?constant_var = ?constant;
+
+// MACROS
+//#define ?macro ?macro_def
+
+// LOCAL CONSTANTS AND MACROS
+//const ?type ?constant_var = ?constant;
+//#define ?macro_name ?macro_def
+// MODULE DATA STRUCTURES
+//enum ?declaration
+//typedef ?declaration
+
+/**
+*  A struct used for holding an implementation pointer and notifying ecom of implementation destruction
+*  @since Series 90 2.0
+*/
+struct CXnEcomHandler::CEcomItem : public CBase
+    {
+    CEcomItem(TUid aInterfaceUid, CBase* aPluginImpl, TUid aDestructorId) : iInterfaceUid(aInterfaceUid), iPluginImpl(aPluginImpl), iDestructorId(aDestructorId) 
+        {
+        }
+    // plugin interface id
+    TUid iInterfaceUid;
+    // plugin implementation pointer
+    CBase* iPluginImpl;
+    // ecom destructor id
+    TUid iDestructorId;
+    // plugin type
+    HBufC8* iType;
+    // destructor
+    ~CEcomItem()
+        {
+        delete iPluginImpl;
+        delete iType;
+        REComSession::DestroyedImplementation(iDestructorId);
+        }
+    };
+
+// LOCAL FUNCTION PROTOTYPES
+//?type ?function_name( ?arg_type, ?arg_type );
+
+// FORWARD DECLARATIONS
+//class ?FORWARD_CLASSNAME;
+
+// ============================= LOCAL FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// ?function_name ?description.
+// ?description
+// Returns: ?value_1: ?description
+//          ?value_n: ?description_line1
+//                    ?description_line2
+// -----------------------------------------------------------------------------
+//
+//?type ?function_name(
+//    ?arg_type arg,  // ?description
+//    ?arg_type arg)  // ?description
+//    {
+
+//    ?code  // ?comment
+
+    // ?comment
+//    ?code
+//    }
+
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// CXnEcomHandler::CXnEcomHandler
+// C++ default constructor can NOT contain any code, that
+// might leave.
+// -----------------------------------------------------------------------------
+//
+CXnEcomHandler::CXnEcomHandler()
+    {
+    }
+
+// -----------------------------------------------------------------------------
+// CXnEcomHandler::ConstructL
+// Symbian 2nd phase constructor can leave.
+// -----------------------------------------------------------------------------
+//
+void CXnEcomHandler::ConstructL()
+    {
+    }
+
+
+// -----------------------------------------------------------------------------
+// CXnEcomHandler::NewL
+// Two-phased constructor.
+// -----------------------------------------------------------------------------
+//
+EXPORT_C CXnEcomHandler* CXnEcomHandler::NewL()
+    {
+    CXnEcomHandler* self = new( ELeave ) CXnEcomHandler;
+    
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop();
+
+    return self;
+    }
+
+    
+// Destructor
+CXnEcomHandler::~CXnEcomHandler()
+    {
+    iPlugins.ResetAndDestroy();
+    }
+
+// -----------------------------------------------------------------------------
+// CXnEcomHandler::PluginsL
+// Get pointers to plugins
+// -----------------------------------------------------------------------------
+EXPORT_C void CXnEcomHandler::PluginsL(TUid aInterfaceUid, const TDesC8& aType, CXnArray& aFunctions)
+    {
+    TBool cached = EFalse;
+    for (TInt i = iPlugins.Count() - 1 ; i >= 0; --i)
+        {
+        CEcomItem* tmp = iPlugins[i];
+        if (tmp->iInterfaceUid == aInterfaceUid
+        && *(tmp->iType) == aType)
+            {
+            cached = ETrue;
+            if(aFunctions.Container().Append(tmp->iPluginImpl) != KErrNone)
+                {
+                User::Leave(KXnErrAppendingPluginFailed);
+                }
+            }
+        }
+    if (cached)
+        {
+        return;
+        }
+    HBufC8* defaultData = aType.AllocL();
+    CleanupStack::PushL(defaultData);
+    TEComResolverParams resolverParams;
+    resolverParams.SetDataType(*defaultData);
+    RImplInfoPtrArray implInfoArray;
+    CXnPointerArrayWithOwnership* safeArray = CXnPointerArrayWithOwnership::NewL();
+    CleanupStack::PushL(safeArray);
+    REComSession::ListImplementationsL(aInterfaceUid, resolverParams, implInfoArray);        
+//    REComSession::ListImplementationsL(aInterfaceUid, implInfoArray);        
+    TInt count = implInfoArray.Count();
+    for (TInt i = implInfoArray.Count() - 1; i >= 0; --i)
+        {
+        CImplementationInformation* impl = implInfoArray[i];
+        (safeArray->Container()).Insert(impl, 0); 
+        }
+    if ((safeArray->Container()).Count() != count)
+        {
+        (safeArray->Container()).Reset();
+        implInfoArray.ResetAndDestroy();
+        User::Leave(KErrNoMemory);
+        }
+    implInfoArray.Reset();        
+    for (TInt i = safeArray->Container().Count() - 1; i >= 0; --i)
+        {
+        CImplementationInformation* impl = static_cast<CImplementationInformation*>(safeArray->Container()[i]);
+        TUid dtorIdKey;
+        CBase* plugin = (CBase*) REComSession::CreateImplementationL(impl->ImplementationUid(), dtorIdKey);
+        CleanupStack::PushL(plugin);
+        CEcomItem* tmp = new (ELeave) CEcomItem(aInterfaceUid, plugin, dtorIdKey);
+        CleanupStack::PushL(tmp);
+        tmp->iType = aType.AllocL();
+        //tmp->iType = impl->DataType().AllocL();
+        if(iPlugins.Append(tmp) != KErrNone)
+            {
+            User::Leave(KXnErrAppendingPluginFailedAgain);
+            }
+        CleanupStack::Pop(tmp);
+        CleanupStack::Pop(plugin);        
+        }
+    for (TInt i = iPlugins.Count() - 1 ; i >= 0; --i)
+        {
+        CEcomItem* tmp = iPlugins[i];
+        if (tmp->iInterfaceUid == aInterfaceUid
+        && *(tmp->iType) == aType)
+            {
+            cached = ETrue;
+            if(aFunctions.Container().Append(tmp->iPluginImpl) != KErrNone)
+                {
+                User::Leave(KXnErrAppendingPluginImplFailed);
+                }
+            }
+        }
+    CleanupStack::PopAndDestroy(safeArray);        
+    CleanupStack::PopAndDestroy(defaultData);
+    }
+
+// -----------------------------------------------------------------------------
+// ?classname::?member_function
+// ?implementation_description
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+//?type ?classname::?member_function(
+//    ?arg_type arg,
+//    ?arg_type arg )
+//    {
+    
+//    ?code
+    
+//    }
+
+
+	
+// ========================== OTHER EXPORTED FUNCTIONS =========================
+
+// -----------------------------------------------------------------------------
+// ?function_name implements...
+// ?implementation_description.
+// Returns: ?value_1: ?description
+//          ?value_n: ?description
+//                    ?description
+// -----------------------------------------------------------------------------
+//
+//?type  ?function_name(
+//    ?arg_type arg,  // ?description
+//    ?arg_type arg )  // ?description
+//    {
+
+//    ?code
+
+//    }
+
+
+//  End of File