--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mpx/viewframework/viewutility/src/mpxviewpluginhandler.cpp	Thu Dec 17 08:55:47 2009 +0200
@@ -0,0 +1,286 @@
+/*
+* Copyright (c) 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:  Implementation of view plugin handler
+*
+*/
+
+
+
+// INCLUDE FILES
+#include <mpxcustomcommandobserver.h>
+#include <mpxviewplugin.hrh>
+#include "mpxpluginhandlerobserver.h"
+#include "mpxviewpluginhandler.h"
+#include "mpxlog.h"
+
+// ======== MEMBER FUNCTIONS ========
+
+// ---------------------------------------------------------------------------
+// C++ default constructor can NOT contain any code, that
+// might leave.
+// ---------------------------------------------------------------------------
+//
+CMPXViewPluginHandler::CMPXViewPluginHandler(
+    MMPXCustomCommandObserver* aCommandObserver,
+    MMPXPluginHandlerObserver& aObserver ) :
+    CMPXPluginHandlerBase(
+        TUid::Uid( KMPXViewPluginInterfaceUid ), ESelectionType, 0, aObserver ),
+    iCommandObserver( aCommandObserver )
+    {
+    }
+
+// ---------------------------------------------------------------------------
+// By default Symbian 2nd phase constructor is private.
+// ---------------------------------------------------------------------------
+//
+void CMPXViewPluginHandler::ConstructL()
+    {
+    MPX_FUNC( "CMPXViewPluginHandler::ConstructL" );
+    BaseConstructL();
+    }
+
+// ---------------------------------------------------------------------------
+// Two-phased constructor.
+// ---------------------------------------------------------------------------
+//
+CMPXViewPluginHandler* CMPXViewPluginHandler::NewL(
+    MMPXCustomCommandObserver* aCommandObserver,
+    MMPXPluginHandlerObserver& aObserver )
+    {
+    CMPXViewPluginHandler* self =
+        new ( ELeave ) CMPXViewPluginHandler( aCommandObserver, aObserver );
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop( self );
+
+    return self;
+    }
+
+// ---------------------------------------------------------------------------
+// Destructor
+// ---------------------------------------------------------------------------
+//
+CMPXViewPluginHandler::~CMPXViewPluginHandler()
+    {
+    for ( TInt i = iLoadedPlugins.Count(); --i >= 0; )
+        {
+        iLoadedPlugins[i]->DestroyView();
+        }
+    iLoadedPlugins.ResetAndDestroy();
+    iLoadPluginUids.Close();
+
+    iCommandObserver = NULL;
+    }
+
+// ---------------------------------------------------------------------------
+// Resolve view plugin based on the criteria passed in parameter.
+// ---------------------------------------------------------------------------
+//
+CMPXViewPlugin* CMPXViewPluginHandler::ResolvePluginL(
+    const TUid& aUid, TUid& aResolvedPluginType,
+    TUid& aResolvedPluginImplementationUid )
+    {
+    MPX_FUNC( "CMPXViewPluginHandler::ResolvePluginL single uid" );
+    RArray<TUid> array;
+    CleanupClosePushL( array );
+    array.AppendL( aUid );
+    CMPXViewPlugin* plugin( NULL );
+    plugin = ResolvePluginL(
+        array, aResolvedPluginType, aResolvedPluginImplementationUid );
+    CleanupStack::PopAndDestroy( &array );
+
+    return plugin;
+    }
+
+// ---------------------------------------------------------------------------
+// Resolve view plugin based on the criteria passed in parameter.
+// ---------------------------------------------------------------------------
+//
+CMPXViewPlugin* CMPXViewPluginHandler::ResolvePluginL(
+    const RArray<TUid>& aUids, TUid& aResolvedPluginType,
+    TUid& aResolvedPluginImplementationUid )
+    {
+    MPX_FUNC( "CMPXViewPluginHandler::ResolvePluginL uid array" );
+#ifdef _DEBUG
+    for ( TInt i = 0; i < aUids.Count(); i++ )
+        {
+        MPX_DEBUG2( "CMPXViewPluginHandler::ResolvePluginL input Uid = 0x%x", aUids[i].iUid );
+        }
+#endif // _DEBUG
+    TUid impUid( FindPlugin( aUids.Array() ) );
+    MPX_DEBUG2( "CMPXViewPluginHandler::ResolvePluginL resolved implementation Uid = 0x%x", impUid.iUid );
+    if ( impUid == KNullUid )
+        {
+        User::Leave( KErrNotFound );
+        }
+    else
+        {
+        aResolvedPluginImplementationUid = impUid;
+        aResolvedPluginType = PluginType( impUid );
+        }
+    return PluginL( impUid );
+    }
+
+// ---------------------------------------------------------------------------
+// Get a list of plugins that need to be pre-loaded.
+// ---------------------------------------------------------------------------
+//
+void CMPXViewPluginHandler::GetPreLoadPluginsL( RArray<TUid>& aUids, const TUid& aUid )
+    {
+    MPX_DEBUG2( "CMPXViewPluginHandler::GetPreLoadPluginsL aUID: 0x%x", aUid );
+    RArray<TUid> array;
+    CleanupClosePushL( array );
+    GetPluginUids( array );
+
+    for ( TInt i = array.Count(); --i >= 0; )
+        {
+        if ( PluginFlagsL( array[ i ] ) & EMPXPluginFlagPreLoad )
+            {
+            if ( aUid == KNullUid )
+            	{
+            MPX_DEBUG2( "CMPXViewPluginHandler::GetPreLoadPluginsL adding UID: 0x%x", array[i] );
+            aUids.Append( array[ i ] );
+				}
+			else
+				{
+				TUid impUid = SupportedAppUid( array[ i ] );
+				MPX_DEBUG2( "APP UID: 0x%x", impUid );
+				if ( aUid == impUid )
+					{
+            		MPX_DEBUG2( "CMPXViewPluginHandler::GetPreLoadPluginsL adding UID: 0x%x", array[i] );
+            		aUids.Append( array[ i ] );
+					}
+				}
+            }
+        }
+    CleanupStack::PopAndDestroy( &array );
+    }
+
+// ---------------------------------------------------------------------------
+// From MMPXViewPluginManager
+// Return view plugin with specific view plugin uid.
+// ---------------------------------------------------------------------------
+//
+CMPXViewPlugin* CMPXViewPluginHandler::PluginL(
+    const TUid& aUid )
+    {
+    MPX_FUNC( "CMPXViewPluginHandler::PluginL" );
+    CMPXViewPlugin* plugin( NULL );
+    TInt index = iLoadPluginUids.Find( aUid );
+
+    if ( KErrNotFound == index )
+        {
+        // Check if uid is a valid view plugin uid.
+        if ( IndexOf( aUid ) != KErrNotFound )
+            {
+            plugin = CMPXViewPlugin::NewL( aUid, iCommandObserver );
+            CleanupStack::PushL( plugin );
+            iLoadPluginUids.AppendL( aUid );
+            iLoadedPlugins.AppendL( plugin );
+            CleanupStack::Pop( plugin );
+            }
+        else
+            {
+            // Leave if not found
+            User::Leave( KErrNotFound );
+            }
+        }
+    else
+        {
+        plugin = iLoadedPlugins[index];
+        }
+    return plugin;
+    }
+
+// ---------------------------------------------------------------------------
+// From MMPXViewPluginManager
+// Resolve view plugin based on the criteria passed in parameter.
+// ---------------------------------------------------------------------------
+//
+CMPXViewPlugin* CMPXViewPluginHandler::ResolvePluginL(
+    const TUid& aUid, TUid& aResolvedPluginType )
+    {
+    MPX_FUNC( "CMPXViewPluginHandler::ResolvePluginL single uid wrapper" );
+    TUid impUid( KNullUid );
+    return ResolvePluginL( aUid, aResolvedPluginType, impUid );
+    }
+
+// ---------------------------------------------------------------------------
+// From MMPXViewPluginManager
+// Resolve view plugin based on the criteria passed in parameter.
+// ---------------------------------------------------------------------------
+//
+CMPXViewPlugin* CMPXViewPluginHandler::ResolvePluginL(
+    const RArray<TUid>& aUids, TUid& aResolvedPluginType )
+    {
+    MPX_FUNC( "CMPXViewPluginHandler::ResolvePluginL uid array wrapper" );
+    TUid impUid( KNullUid );
+    return ResolvePluginL( aUids, aResolvedPluginType, impUid );
+    }
+
+// ---------------------------------------------------------------------------
+// From CMPXPluginHandlerBase
+// Resolve view plugin based on the criteria passed in parameter.
+// ---------------------------------------------------------------------------
+//
+void CMPXViewPluginHandler::ResolvePluginL()
+    {
+    MPX_FUNC( "CMPXViewPluginHandler::ResolvePluginL" );
+    // not used
+    }
+
+// ----------------------------------------------------------------------------
+// CMPXViewPluginHandler::IsPluginLoaded
+// ----------------------------------------------------------------------------
+//
+TBool CMPXViewPluginHandler::IsPluginLoaded(
+    const TUid& aPluginUid)
+    {
+    MPX_FUNC("CMPXViewPluginHandler::IsPluginLoaded");
+    return (iLoadPluginUids.Find(aPluginUid) != KErrNotFound);
+    }
+
+// ----------------------------------------------------------------------------
+// CMPXViewPluginHandler::LoadPluginL
+// ----------------------------------------------------------------------------
+//
+void CMPXViewPluginHandler::LoadPluginL(
+    const TUid& aPluginUid)
+    {
+    MPX_FUNC("CMPXViewPluginHandler::LoadPluginL");
+    (void)PluginL(aPluginUid);
+    }
+
+// ----------------------------------------------------------------------------
+// Unload the plugin
+// ----------------------------------------------------------------------------
+//
+void CMPXViewPluginHandler::UnloadPlugin(
+    const TUid& aUid)
+    {
+    MPX_FUNC("CMPXViewPluginHandler::UnloadPlugin");
+
+    TInt index = iLoadPluginUids.Find(aUid);
+    if (index != KErrNotFound)
+        {
+        CMPXViewPlugin* plugin = iLoadedPlugins[index];
+        plugin->DestroyView();
+        iLoadedPlugins.Remove(index);
+        iLoadPluginUids.Remove(index);
+        delete plugin;
+        }
+    }
+
+
+//  End of File