--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/inc/cpluginvalidator.h	Fri Mar 26 03:06:02 2010 +0530
@@ -0,0 +1,195 @@
+/*
+* Copyright (c) 2006-2006 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:  
+ *
+*/
+
+
+#ifndef CPLUGINVALIDATOR_H
+#define CPLUGINVALIDATOR_H
+
+// INCLUDES
+#include <e32base.h>
+#include <e32hashtab.h>
+#include <ecom/implementationinformation.h>
+
+// FORWARD DECLARATIONS
+class REComSession;
+
+/**
+ *  Class containing information regarding a plugin
+ *
+ * 
+ *  @lib cpclient.dll
+ *  @since S60 v 5.0
+ */
+NONSHARABLE_CLASS( TPluginInfo )
+	{
+public:
+	TAny* iPlugin; // not own
+	TUid iImplementationUid;
+	TInt iVersion;
+	TUid iDtor_ID_Key;
+	};
+
+/**
+ *  Class used to maintain required ECOM plugins implementations
+ *
+ * 
+ *  @lib cpclient.dll
+ *  @since S60 v 5.0
+ */
+NONSHARABLE_CLASS( CPluginValidator ): public CActive
+    {
+public:
+
+    /**
+     * Two-phased constructor.
+     * 
+     */     
+    IMPORT_C static CPluginValidator* NewL( TUid aUid, 
+                                            TAny *aParameter = NULL );
+
+    /**
+     * Two-phased constructor.
+     * 
+     */     
+    IMPORT_C static CPluginValidator* NewLC( TUid aUid,
+                                             TAny *aParameter = NULL );
+
+    /**
+     * Gets plugin with provided UID
+     *
+     * @param aUid required plugin
+     * @return pointer to plugin implementation
+     */   
+    IMPORT_C TAny* GetImplementation( TUid aUid );
+
+    /**
+     * Gets plugin with provided index
+     *
+     * @param aIndex index of plugin
+     * @return pointer to plugin implementation
+     */   
+    IMPORT_C TAny* GetImplementation( TInt aIndex );
+    
+    /**
+     * Gets number of plugins
+     *
+     * @return number of plugins
+     */    
+    IMPORT_C TInt GetCount();
+    
+    /**
+     * Desctructor.
+     */     
+    virtual ~CPluginValidator();
+
+protected:
+
+    /**
+     * From CActive, RunL.
+     * Handles the active object’s request completion event
+     */
+    void RunL();
+
+    /**
+     * From CActive, DoCancel.
+     * Implements cancellation of an outstanding request.
+     */
+    void DoCancel();
+
+    /**
+     * From CActive, RunError.
+     * Method called when leave occured in RunL
+     */
+    TInt RunError( TInt aError );
+
+protected:
+
+    /**
+     * C++ default constructor.
+     */    
+    CPluginValidator( TUid aUid, TAny *aParameter );
+
+    /**
+     * Perform the second phase construction of a CPluginValidator object.
+     */    
+    void ConstructL();
+    
+    /*
+     * Checks if plugin is present in an array
+     */
+    TBool PresentInArrayL( TPluginInfo aPluginInfo, 
+    		const RImplInfoPtrArray& aInfoArray );
+
+    /*
+     * 
+     */
+    void DestroyPlugin( TInt aIndex );    
+    
+    /**
+     * Cleans plugins table;
+     */    
+    void CleanPluginsTable();
+    
+    /**
+     * Loads or destroys plugins
+     */    
+    virtual void ManagePluginsL();    
+
+    /**
+     * Loads ECOM plugins
+     */    
+    virtual void LoadPluginL( TPluginInfo& aPluginInfo );    
+    
+protected:
+    
+    /**
+     * ECOM handler
+     * Own.
+     */
+    REComSession* iSession;
+    
+    /**
+     * Array containing plugins
+     * Own.
+     */
+    RArray<TPluginInfo> iPluginArray;
+    
+    /**
+     * UID of the interface
+     */
+    const TUid iUid;
+        
+    /**
+     * Parameter to pass to the object creation method.
+     */
+    TAny* iParameter;
+     };
+
+// ==================== LOCAL FUNCTIONS ====================
+
+/**
+* Identity function to search in an array of TPluginInfo.
+* @param aLeft Search term.
+* @param aRight Array item.
+* @return ETrue if ID-s match.
+*/
+LOCAL_C TBool UidMatch( const TPluginInfo& aLeft, const TPluginInfo& aRight )
+    {
+    return aLeft.iImplementationUid == aRight.iImplementationUid;
+    }
+
+#endif // CPLUGINVALIDATOR_H