--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gssettingsuis/Gs/GSFramework/src/GSShimmedView.cpp	Thu Nov 04 13:38:47 2010 +0800
@@ -0,0 +1,318 @@
+/*
+* Copyright (c) 2006-1008 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:  Shim view
+*
+*/
+
+#include "GSShimmedView.h"
+
+// System includes
+#include <eikenv.h>
+#include <aknViewAppUi.h>
+
+// User includes
+#include "GSPluginAndViewIdCache.h"
+#include <gsfwviewuids.h>
+#include <gspluginloader.h>
+#include <gsplugininterface.h>
+
+// ================= MEMBER FUNCTIONS =======================
+
+// ----------------------------------------------------------------------------
+// CGSShimmedView::CGSShimmedView
+//
+//
+// ----------------------------------------------------------------------------
+//
+CGSShimmedView::CGSShimmedView( TUid aViewId, 
+                                CGSPluginAndViewIdCache& aCache, 
+                                CCoeAppUi& aAppUi )
+:   CActive( KMaxTInt ), iViewId( aViewId ), iCache( aCache ), iAppUi( aAppUi )
+    {
+    }
+
+
+// ----------------------------------------------------------------------------
+// CGSShimmedView::~CGSShimmedView
+//
+//
+// ----------------------------------------------------------------------------
+//
+CGSShimmedView::~CGSShimmedView()
+    {
+    Cancel();
+    DeregisterView();
+    iCache.HandleShimDestruction( iViewId );
+    delete iCustomMessage;
+    }
+
+
+// ----------------------------------------------------------------------------
+// CGSShimmedView::ConstructL
+//
+//
+// ----------------------------------------------------------------------------
+//
+void CGSShimmedView::ConstructL()
+    {
+    RegisterViewL();
+    }
+
+
+// ----------------------------------------------------------------------------
+// CGSShimmedView::NewLC
+//
+//
+// ----------------------------------------------------------------------------
+//
+CGSShimmedView* CGSShimmedView::NewLC( TUid aViewId, 
+                                       CGSPluginAndViewIdCache& aCache, 
+                                       CCoeAppUi& aAppUi )
+    {
+    CGSShimmedView* self = new(ELeave) CGSShimmedView( aViewId, aCache, aAppUi );
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    return self;
+    }
+
+
+// ----------------------------------------------------------------------------
+// CGSShimmedView::ViewId
+//
+//
+// ----------------------------------------------------------------------------
+//
+TVwsViewId CGSShimmedView::ViewId() const
+    {
+    const TVwsViewId ret( KUidGS, iViewId );
+    return ret;
+    }
+
+
+// ----------------------------------------------------------------------------
+// CGSShimmedView::ViewActivatedL
+//
+//
+// ----------------------------------------------------------------------------
+//
+void CGSShimmedView::ViewActivatedL( const TVwsViewId& aPrevViewId, 
+                                     TUid aCustomMessageId, 
+                                     const TDesC8& aCustomMessage )
+    {
+    const TBool isLoaded = iCache.IsPluginLoaded( iViewId );
+    if  ( isLoaded == EFalse )
+        {
+        HBufC8* customMessage = aCustomMessage.AllocL();
+        delete iCustomMessage;
+        iCustomMessage = customMessage;
+
+        iCustomMessageId = aCustomMessageId;
+
+        iCache.SetPriorToPlaceholderActiveViewId( aPrevViewId );
+        SetState( EStateActivatingPlaceholderView );
+        }
+    }
+
+
+// ----------------------------------------------------------------------------
+// CGSShimmedView::ViewDeactivated
+//
+//
+// ----------------------------------------------------------------------------
+//
+void CGSShimmedView::ViewDeactivated()
+    {
+    }
+
+
+// ----------------------------------------------------------------------------
+// CGSShimmedView::RunL
+//
+//
+// ----------------------------------------------------------------------------
+//
+void CGSShimmedView::RunL()
+    {
+    // NB: At this point, we are the active view.
+
+    switch( iState )
+        {
+    default:
+    case EStateInactive:
+        break;
+
+    case EStateActivatingPlaceholderView:
+        StateActivatePlaceholderViewL();
+        break;
+
+    case EStateLoadingPlugin:
+        StateLoadPluginL();
+        break;
+
+    case EStateDeletingSelf:
+        SetState( EStateInactive, EFalse );
+        delete this;
+        break;
+        }
+    }
+
+
+// ----------------------------------------------------------------------------
+// CGSShimmedView::RegisterViewL
+//
+//
+// ----------------------------------------------------------------------------
+//
+void CGSShimmedView::RegisterViewL()
+    {
+    iAppUi.RegisterViewL( *this );
+    iIsRegistered = ETrue;
+    }
+
+
+// ----------------------------------------------------------------------------
+// CGSShimmedView::DeregisterView
+//
+//
+// ----------------------------------------------------------------------------
+//
+void CGSShimmedView::DeregisterView()
+    {
+    if  ( iIsRegistered )
+        {
+        iAppUi.DeregisterView( *this );
+        }
+    iIsRegistered = EFalse;
+    }
+
+
+
+// ----------------------------------------------------------------------------
+// CGSShimmedView::DoCancel
+//
+//
+// ----------------------------------------------------------------------------
+//
+void CGSShimmedView::DoCancel()
+    {
+    // Nothing to do here - requests already completed
+    }
+
+
+// ----------------------------------------------------------------------------
+// CGSShimmedView::SetState
+//
+//
+// ----------------------------------------------------------------------------
+//
+void CGSShimmedView::SetState( TState aState, TBool aCompleteRequest )
+    {
+    Cancel();
+    //
+    iState = aState;
+    //
+    if  ( aCompleteRequest )
+        {
+        if  ( !IsAdded() )
+            {
+            // Add only on-demand to avoid cluttering the scheduler
+            CActiveScheduler::Add( this );
+            }
+
+        // Complete ourselves to continue activation process asynchronously
+        // via RunL().
+        TRequestStatus* status = &iStatus;
+        User::RequestComplete( status, KErrNone );
+        SetActive();
+        }
+    }
+
+
+// ----------------------------------------------------------------------------
+// CGSShimmedView::StateActivatePlaceholderViewL
+//
+//
+// ----------------------------------------------------------------------------
+//
+void CGSShimmedView::StateActivatePlaceholderViewL()
+    {
+    iCache.ActivatePlaceholderViewL();
+    SetState( EStateLoadingPlugin );
+    }
+
+
+//Disabling warning caused by err variable used inside macros
+#pragma diag_suppress 550
+// ----------------------------------------------------------------------------
+// CGSShimmedView::StateLoadPluginL
+//
+//
+// ----------------------------------------------------------------------------
+//
+void CGSShimmedView::StateLoadPluginL()
+    {
+    CAknViewAppUi& appUi = static_cast< CAknViewAppUi& >( iAppUi );
+
+    // As a fall back, we'll try to activate the view that was being
+    // displayed prior to us attempting to load a plugin.
+    TUid viewIdToActivate = iCache.PriorToPlaceholderActiveViewId().iViewUid;
+
+    // Get the implementation uid that contains this view.
+    const TUid impUid = iCache.PluginImplementationUidForView( iViewId );
+
+    if  ( impUid != KNullUid )
+        {
+        CGSPluginLoader* loader = CGSPluginLoader::NewL( &appUi );
+        CleanupStack::PushL( loader );
+
+        // Now try to load the specific instance of the GS plugin that
+        // implements the real view's concrete implementation.
+        //
+        // Since the act of loading a plugin will also attempt to register
+        // that plugin with the app ui (since a GS plugin "is a" view) we
+        // must first unregister the shim view. If there was an error
+        // loading the plugin, then we'll re-register the shim.
+        DeregisterView();
+       
+        CGSPluginInterface* plugin = NULL;
+        TRAPD( loadError, plugin = &loader->LoadSyncL( KGSPluginInterfaceUid, impUid ) );
+        CleanupStack::PopAndDestroy( loader );
+
+        if  ( loadError == KErrNone )
+            {
+            // .. and set us up to activate the newly loaded plugin view.
+            viewIdToActivate = iViewId;
+
+            // Set ourselves up to be destroyed in the next RunL callback
+            SetState( EStateDeletingSelf );
+            }
+        else
+            {
+            // Didn't manage to load plugin. Re-register the view
+            // and bail out.
+            SetState( EStateInactive, EFalse );
+            RegisterViewL();
+            }
+        }
+
+    appUi.ActivateLocalViewL( viewIdToActivate, iCustomMessageId, *iCustomMessage );
+    }
+//Enabling warnings
+#pragma diag_default 550
+
+
+
+
+
+//  End of File