tactilefeedback/tactilefeedbackclient/src/touchfeedbackadaptation.cpp
changeset 0 d54f32e146dd
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tactilefeedback/tactilefeedbackclient/src/touchfeedbackadaptation.cpp	Thu Dec 17 08:53:38 2009 +0200
@@ -0,0 +1,198 @@
+/*
+* Copyright (c) 2007 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:  This class is an adaptation class that is instantiated
+*                by the application framework, and that instantiates the
+*                actual Tactile Feedback Client implementation.
+* Part of:      Tactile Feedback.
+*
+*/
+
+#include <e32std.h>
+#include <eikenv.h>
+#include <coecntrl.h>
+
+#include <tactilefeedbacktrace.h>
+#include <touchfeedbackadaptation.h>
+
+#include "touchfeedbackclient.h"
+#include "touchfeedbackimpl.h"
+
+// ======== MEMBER FUNCTIONS ========
+
+// ---------------------------------------------------------------------------
+// Constructor.
+// ---------------------------------------------------------------------------
+//
+CTouchFeedbackAdaptation::CTouchFeedbackAdaptation()
+    {
+    }
+
+// ---------------------------------------------------------------------------
+// 2nd phase constructor.
+// ---------------------------------------------------------------------------
+//
+void CTouchFeedbackAdaptation::ConstructL()
+    {
+    TRACE("CTouchFeedbackAdaptation::ConstructL - Begin");
+
+    iTouchFeedback = CTouchFeedbackImpl::New();    
+
+    TRACE("CTouchFeedbackAdaptation::ConstructL - End");
+    }
+
+
+// ---------------------------------------------------------------------------
+// We store ourselves to the thread local storage here. The instance is 
+// accessible to clients via Instance -function.
+// ---------------------------------------------------------------------------
+//
+EXPORT_C CTouchFeedbackAdaptation* CTouchFeedbackAdaptation::NewL()
+    {
+    CTouchFeedbackAdaptation* self = new( ELeave ) CTouchFeedbackAdaptation;
+    CleanupStack::PushL( self );
+    self->ConstructL();
+
+    // Store ourselves to thread local storage
+    User::LeaveIfError( Dll::SetTls( self ) );        
+
+    CleanupStack::Pop( self );    
+    return self;
+    }
+
+// ---------------------------------------------------------------------------
+// Destructor.
+// ---------------------------------------------------------------------------
+//
+CTouchFeedbackAdaptation::~CTouchFeedbackAdaptation()
+    {
+    delete iTouchFeedback;
+    Dll::SetTls( NULL );
+    }
+
+// ---------------------------------------------------------------------------
+// Retrieve instance from thread local storage
+// ---------------------------------------------------------------------------
+//
+MTouchFeedback* CTouchFeedbackAdaptation::GetInstance()
+    {
+    TAny* selfPtr = Dll::Tls();
+
+    CTouchFeedbackAdaptation* self = 
+        static_cast<CTouchFeedbackAdaptation*>( selfPtr );
+    
+    if ( self )
+        {
+        return self->iTouchFeedback;
+        }
+    else
+        {
+        return NULL;
+        }
+    }
+
+// ---------------------------------------------------------------------------
+// Create new instance and return it to caller
+//
+// We must have check for the case where client calls this even though
+// instance exists already (in this case we only return the existing 
+// instance).
+// ---------------------------------------------------------------------------
+//
+MTouchFeedback* CTouchFeedbackAdaptation::CreateInstanceL()
+    {   
+    // Use current instance if it exists
+    MTouchFeedback* feedback = GetInstance();
+
+    // If current instance does not exist, then create a new one
+    if ( !feedback )
+        {
+        CTouchFeedbackAdaptation* tmp = NewL();
+        
+        feedback = tmp->GetInstance();
+        }
+        
+    return feedback;
+    }
+
+// ---------------------------------------------------------------------------
+// Destroy ourselves if we are found at thread local storage (tls)
+//
+// Notice that tls content does not need to be zeroed because that is already
+// done in the destructor.
+// ---------------------------------------------------------------------------
+//
+void CTouchFeedbackAdaptation::DestroyInstance()
+    {
+    TAny* selfPtr = Dll::Tls();
+
+    CTouchFeedbackAdaptation* self = 
+        static_cast<CTouchFeedbackAdaptation*>( selfPtr );
+    
+    if ( self )
+        {
+        delete self;
+        }        
+    }    
+    
+// ---------------------------------------------------------------------------
+// Empty implementation, as this function is no longer in use.
+// (Control visibility changes now handled in HandleControlStateChange)
+// ---------------------------------------------------------------------------
+//
+EXPORT_C void CTouchFeedbackAdaptation::ControlVisibilityChanged( 
+    const CCoeControl* /*aControl*/ )
+    {
+    }
+
+// ---------------------------------------------------------------------------
+// Nothing to do here, just pass the information to implementation.
+// ---------------------------------------------------------------------------
+//
+EXPORT_C void CTouchFeedbackAdaptation::LayoutChanged( )
+    {
+    if ( iTouchFeedback )
+        {
+        iTouchFeedback->LayoutChanged();
+        }
+    }
+    
+// ---------------------------------------------------------------------------
+// From class MObjectProvider.
+// We have to implement this because it is pure virtual in base class.
+// Return Null as we are not actually part of object provider hierarchy.
+// ---------------------------------------------------------------------------
+TTypeUid::Ptr CTouchFeedbackAdaptation::MopSupplyObject( TTypeUid /*aId*/ )
+    {
+    return TTypeUid::Null();
+    }
+        
+// ---------------------------------------------------------------------------
+// From class MCoeControlStateObserver.
+// Here we just pass the information about control state change ahead to
+// actual feedback implementation.
+// ---------------------------------------------------------------------------
+TInt CTouchFeedbackAdaptation::HandleControlStateChange( 
+    CCoeControl* aControl,
+    TCoeState /*aState*/ )
+    {
+    if ( iTouchFeedback )
+        {
+        iTouchFeedback->ControlVisibilityChanged( aControl );
+        }
+        
+    return KErrNone;
+    }
+    
+
+