Changes after Custom actor impl extension, cleanup, extension and test cases for...
[platform/core/uifw/dali-toolkit.git] / dali-toolkit / public-api / controls / control-impl.cpp
index 16b4e67..d655a3b 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
 #include <limits>
 #include <stack>
 #include <dali/public-api/actors/image-actor.h>
-#include <dali/public-api/actors/mesh-actor.h>
+#include <dali/devel-api/actors/mesh-actor.h>
 #include <dali/public-api/animation/constraint.h>
 #include <dali/public-api/animation/constraints.h>
-#include <dali/public-api/geometry/mesh.h>
+#include <dali/devel-api/geometry/mesh.h>
 #include <dali/public-api/object/type-registry.h>
-#include <dali/public-api/object/type-registry-helper.h>
-#include <dali/public-api/scripting/scripting.h>
+#include <dali/devel-api/object/type-registry-helper.h>
+#include <dali/devel-api/scripting/scripting.h>
 #include <dali/public-api/size-negotiation/relayout-container.h>
 #include <dali/integration-api/debug.h>
 
@@ -37,7 +37,7 @@
 #include <dali-toolkit/public-api/focus-manager/keyinput-focus-manager.h>
 #include <dali-toolkit/public-api/focus-manager/keyboard-focus-manager.h>
 #include <dali-toolkit/public-api/controls/control.h>
-#include <dali-toolkit/public-api/styling/style-manager.h>
+#include <dali-toolkit/devel-api/styling/style-manager.h>
 #include <dali-toolkit/internal/styling/style-manager-impl.h>
 
 namespace Dali
@@ -49,12 +49,6 @@ namespace Toolkit
 namespace
 {
 
-#if defined(DEBUG_ENABLED)
-Integration::Log::Filter* gLogFilter  = Integration::Log::Filter::New(Debug::NoLogging, false, "LOG_CONTROL");
-#endif
-
-const float MAX_FLOAT_VALUE( std::numeric_limits<float>::max() );
-const Vector3 MAX_SIZE( MAX_FLOAT_VALUE, MAX_FLOAT_VALUE, MAX_FLOAT_VALUE );
 const float BACKGROUND_ACTOR_Z_POSITION( -0.1f );
 
 BaseHandle Create()
@@ -65,15 +59,17 @@ BaseHandle Create()
 // Setup signals and actions using the type-registry.
 DALI_TYPE_REGISTRATION_BEGIN( Control, CustomActor, Create );
 
-// Note: Properties are registered separately below,
+// Note: Properties are registered separately below.
 
-DALI_SIGNAL_REGISTRATION( Control, "key-event",                 SIGNAL_KEY_EVENT         )
-DALI_SIGNAL_REGISTRATION( Control, "tapped",                    SIGNAL_TAPPED            )
-DALI_SIGNAL_REGISTRATION( Control, "panned",                    SIGNAL_PANNED            )
-DALI_SIGNAL_REGISTRATION( Control, "pinched",                   SIGNAL_PINCHED           )
-DALI_SIGNAL_REGISTRATION( Control, "long-pressed",              SIGNAL_LONG_PRESSED      )
+DALI_SIGNAL_REGISTRATION( Toolkit, Control, "key-event",              SIGNAL_KEY_EVENT              )
+DALI_SIGNAL_REGISTRATION( Toolkit, Control, "key-input-focus-gained", SIGNAL_KEY_INPUT_FOCUS_GAINED )
+DALI_SIGNAL_REGISTRATION( Toolkit, Control, "key-input-focus-lost",   SIGNAL_KEY_INPUT_FOCUS_LOST   )
+DALI_SIGNAL_REGISTRATION( Toolkit, Control, "tapped",                 SIGNAL_TAPPED                 )
+DALI_SIGNAL_REGISTRATION( Toolkit, Control, "panned",                 SIGNAL_PANNED                 )
+DALI_SIGNAL_REGISTRATION( Toolkit, Control, "pinched",                SIGNAL_PINCHED                )
+DALI_SIGNAL_REGISTRATION( Toolkit, Control, "long-pressed",           SIGNAL_LONG_PRESSED           )
 
-DALI_ACTION_REGISTRATION( Control, "control-activated",         ACTION_CONTROL_ACTIVATED )
+DALI_ACTION_REGISTRATION( Toolkit, Control, "control-activated",      ACTION_CONTROL_ACTIVATED      )
 
 DALI_TYPE_REGISTRATION_END()
 
@@ -130,16 +126,30 @@ Mesh CreateMesh()
  * Sets all the required properties for the background actor.
  *
  * @param[in]  actor              The actor to set the properties on.
+ * @param[in]  color              The required color of the actor.
+ */
+void SetupBackgroundActor( Actor actor, const Vector4& color )
+{
+  actor.SetColor( color );
+  actor.SetPositionInheritanceMode( USE_PARENT_POSITION_PLUS_LOCAL_POSITION );
+  actor.SetColorMode( USE_OWN_MULTIPLY_PARENT_COLOR );
+  actor.SetZ( BACKGROUND_ACTOR_Z_POSITION );
+  actor.SetResizePolicy( ResizePolicy::FILL_TO_PARENT, Dimension::ALL_DIMENSIONS );
+}
+
+/**
+ * Sets all the required properties for the background actor.
+ *
+ * @param[in]  actor              The actor to set the properties on.
  * @param[in]  constrainingIndex  The property index to constrain the parent's size on.
  * @param[in]  color              The required color of the actor.
  */
-void SetupBackgroundActor( Actor actor, Property::Index constrainingIndex, const Vector4& color )
+void SetupBackgroundActorConstrained( Actor actor, Property::Index constrainingIndex, const Vector4& color )
 {
   actor.SetColor( color );
   actor.SetPositionInheritanceMode( USE_PARENT_POSITION_PLUS_LOCAL_POSITION );
   actor.SetColorMode( USE_OWN_MULTIPLY_PARENT_COLOR );
   actor.SetZ( BACKGROUND_ACTOR_Z_POSITION );
-  actor.SetRelayoutEnabled( false );
 
   Constraint constraint = Constraint::New<Vector3>( actor,
                                                     constrainingIndex,
@@ -157,16 +167,6 @@ class Control::Impl : public ConnectionTracker
 {
 public:
 
-  /**
-   * Size indices for mMinMaxSize array
-   */
-  enum
-  {
-    MIN_SIZE_INDEX = 0,
-    MAX_SIZE_INDEX = 1
-  };
-
-public:
   // Construction & Destruction
   Impl(Control& controlImpl)
   : mControlImpl( controlImpl ),
@@ -178,12 +178,9 @@ public:
     mPanGestureDetector(),
     mTapGestureDetector(),
     mLongPressGestureDetector(),
-    mCurrentSize(),
-    mNaturalSize(),
-    mFlags( Control::CONTROL_BEHAVIOUR_NONE ),
+    mFlags( Control::ControlBehaviour( ACTOR_BEHAVIOUR_NONE ) ),
     mIsKeyboardNavigationSupported( false ),
-    mIsKeyboardFocusGroup( false ),
-    mInitialized( false )
+    mIsKeyboardFocusGroup( false )
   {
   }
 
@@ -245,7 +242,7 @@ public:
 
     if ( control )
     {
-      Control& controlImpl( control.GetImplementation() );
+      Control& controlImpl( GetImplementation( control ) );
 
       switch ( index )
       {
@@ -311,7 +308,7 @@ public:
 
     if ( control )
     {
-      Control& controlImpl( control.GetImplementation() );
+      Control& controlImpl( GetImplementation( control ) );
 
       switch ( index )
       {
@@ -331,10 +328,10 @@ public:
         {
           Property::Map map;
 
-          Actor actor = controlImpl.GetBackgroundActor();
-          if ( actor )
+          Background* back = controlImpl.mImpl->mBackground;
+          if( back )
           {
-            ImageActor imageActor = ImageActor::DownCast( actor );
+            ImageActor imageActor = ImageActor::DownCast( back->actor );
             if ( imageActor )
             {
               Image image = imageActor.GetImage();
@@ -366,20 +363,18 @@ public:
   Background* mBackground;           ///< Only create the background if we use it
   Vector3* mStartingPinchScale;      ///< The scale when a pinch gesture starts, TODO: consider removing this
   Toolkit::Control::KeyEventSignalType mKeyEventSignal;
+  Toolkit::Control::KeyInputFocusSignalType mKeyInputFocusGainedSignal;
+  Toolkit::Control::KeyInputFocusSignalType mKeyInputFocusLostSignal;
 
   // Gesture Detection
   PinchGestureDetector mPinchGestureDetector;
   PanGestureDetector mPanGestureDetector;
   TapGestureDetector mTapGestureDetector;
   LongPressGestureDetector mLongPressGestureDetector;
-  // @todo change all these to Vector2 when we have a chance to sanitize the public API as well
-  Vector3 mCurrentSize; ///< Stores the current control's size, this is the negotiated size
-  Vector3 mNaturalSize; ///< Stores the size set through the Actor's API. This is size the actor wants to be. Useful when reset to the initial size is needed.
 
-  ControlBehaviour mFlags :6;              ///< Flags passed in from constructor. Need to increase this size when new enums are added
+  ControlBehaviour mFlags :CONTROL_BEHAVIOUR_FLAG_COUNT;    ///< Flags passed in from constructor.
   bool mIsKeyboardNavigationSupported :1;  ///< Stores whether keyboard navigation is supported by the control.
   bool mIsKeyboardFocusGroup :1;           ///< Stores whether the control is a focus group.
-  bool mInitialized :1;
 
   // Properties - these need to be members of Internal::Control::Impl as they need to function within this class.
   static PropertyRegistration PROPERTY_1;
@@ -397,7 +392,7 @@ PropertyRegistration Control::Impl::PROPERTY_4( typeRegistration, "key-input-foc
 Toolkit::Control Control::New()
 {
   // Create the implementation, temporarily owned on stack
-  IntrusivePtr<Control> controlImpl = new Control( CONTROL_BEHAVIOUR_NONE );
+  IntrusivePtr<Control> controlImpl = new Control( ControlBehaviour( ACTOR_BEHAVIOUR_NONE ) );
 
   // Pass ownership to handle
   Toolkit::Control handle( *controlImpl );
@@ -414,55 +409,6 @@ Control::~Control()
   delete mImpl;
 }
 
-Vector3 Control::GetNaturalSize()
-{
-  // could be overridden in derived classes.
-  return mImpl->mNaturalSize;
-}
-
-float Control::CalculateChildSize( const Dali::Actor& child, Dimension dimension )
-{
-  // Could be overridden in derived classes.
-  return CalculateChildSizeBase( child, dimension );
-}
-
-bool Control::RelayoutDependentOnChildren( Dimension dimension )
-{
-  return RelayoutDependentOnChildrenBase( dimension );
-}
-
-float Control::GetHeightForWidth( float width )
-{
-  // could be overridden in derived classes.
-  float height( 0.0f );
-  if ( mImpl->mNaturalSize.width > 0.0f )
-  {
-    height = mImpl->mNaturalSize.height * width / mImpl->mNaturalSize.width;
-  }
-  return height;
-}
-
-float Control::GetWidthForHeight( float height )
-{
-  // could be overridden in derived classes.
-  float width( 0.0f );
-  if ( mImpl->mNaturalSize.height > 0.0f )
-  {
-    width = mImpl->mNaturalSize.width * height / mImpl->mNaturalSize.height;
-  }
-  return width;
-}
-
-const Vector3& Control::GetControlSize() const
-{
-  return mImpl->mCurrentSize;
-}
-
-const Vector3& Control::GetSizeSet() const
-{
-  return mImpl->mNaturalSize;
-}
-
 void Control::SetKeyInputFocus()
 {
   if( Self().OnStage() )
@@ -540,7 +486,7 @@ void Control::SetBackgroundColor( const Vector4& color )
     // Create Mesh Actor
     MeshActor meshActor = MeshActor::New( CreateMesh() );
 
-    SetupBackgroundActor( meshActor, Actor::Property::SCALE, color );
+    SetupBackgroundActorConstrained( meshActor, Actor::Property::SCALE, color );
 
     // Set the background actor before adding so that we do not inform deriving classes
     background.actor = meshActor;
@@ -571,7 +517,7 @@ void Control::SetBackgroundImage( Image image )
   }
 
   ImageActor imageActor = ImageActor::New( image );
-  SetupBackgroundActor( imageActor, Actor::Property::SIZE, background.color );
+  SetupBackgroundActor( imageActor, background.color );
 
   // Set the background actor before adding so that we do not inform derived classes
   background.actor = imageActor;
@@ -590,16 +536,6 @@ void Control::ClearBackground()
   }
 }
 
-Actor Control::GetBackgroundActor() const
-{
-  if ( mImpl->mBackground )
-  {
-    return mImpl->mBackground->actor;
-  }
-
-  return Actor();
-}
-
 void Control::SetKeyboardNavigationSupport(bool isSupported)
 {
   mImpl->mIsKeyboardNavigationSupported = isSupported;
@@ -613,7 +549,11 @@ bool Control::IsKeyboardNavigationSupported()
 void Control::Activate()
 {
   // Inform deriving classes
-  OnActivated();
+  OnAccessibilityActivated();
+}
+
+void Control::OnAccessibilityActivated()
+{
 }
 
 bool Control::OnAccessibilityPan(PanGesture gesture)
@@ -663,7 +603,7 @@ bool Control::DoAction(BaseObject* object, const std::string& actionName, const
     if( control )
     {
       // if cast succeeds there is an implementation so no need to check
-      control.GetImplementation().OnActivated();
+      GetImplementation( control ).OnAccessibilityActivated();
     }
   }
 
@@ -678,13 +618,21 @@ bool Control::DoConnectSignal( BaseObject* object, ConnectionTrackerInterface* t
   Toolkit::Control control = Toolkit::Control::DownCast( handle );
   if ( control )
   {
-    Control& controlImpl( control.GetImplementation() );
+    Control& controlImpl( GetImplementation( control ) );
     connected = true;
 
     if ( 0 == strcmp( signalName.c_str(), SIGNAL_KEY_EVENT ) )
     {
       controlImpl.KeyEventSignal().Connect( tracker, functor );
     }
+    else if( 0 == strcmp( signalName.c_str(), SIGNAL_KEY_INPUT_FOCUS_GAINED ) )
+    {
+      controlImpl.KeyInputFocusGainedSignal().Connect( tracker, functor );
+    }
+    else if( 0 == strcmp( signalName.c_str(), SIGNAL_KEY_INPUT_FOCUS_LOST ) )
+    {
+      controlImpl.KeyInputFocusLostSignal().Connect( tracker, functor );
+    }
     else if( 0 == strcmp( signalName.c_str(), SIGNAL_TAPPED ) )
     {
       controlImpl.EnableGestureDetection( Gesture::Tap );
@@ -719,6 +667,16 @@ Toolkit::Control::KeyEventSignalType& Control::KeyEventSignal()
   return mImpl->mKeyEventSignal;
 }
 
+Toolkit::Control::KeyInputFocusSignalType& Control:: KeyInputFocusGainedSignal()
+{
+  return mImpl->mKeyInputFocusGainedSignal;
+}
+
+Toolkit::Control::KeyInputFocusSignalType& Control:: KeyInputFocusLostSignal()
+{
+  return mImpl->mKeyInputFocusLostSignal;
+}
+
 bool Control::EmitKeyEventSignal( const KeyEvent& event )
 {
   // Guard against destruction during signal emission
@@ -742,7 +700,7 @@ bool Control::EmitKeyEventSignal( const KeyEvent& event )
 }
 
 Control::Control( ControlBehaviour behaviourFlags )
-: CustomActorImpl( behaviourFlags & REQUIRES_TOUCH_EVENTS ),
+: CustomActorImpl( static_cast< ActorFlags >( behaviourFlags ) ),
   mImpl(new Impl(*this))
 {
   mImpl->mFlags = behaviourFlags;
@@ -750,16 +708,6 @@ Control::Control( ControlBehaviour behaviourFlags )
 
 void Control::Initialize()
 {
-  // Calling deriving classes
-  OnInitialize();
-
-  // Test if the no size negotiation flag is not set
-  if( ( mImpl->mFlags & NO_SIZE_NEGOTIATION ) == 0 )
-  {
-    // Size negotiate disabled by default, so turn it on for this actor
-    Self().SetRelayoutEnabled( true );
-  }
-
   if( mImpl->mFlags & REQUIRES_STYLE_CHANGE_SIGNALS )
   {
     Toolkit::StyleManager styleManager = Toolkit::StyleManager::Get();
@@ -771,10 +719,13 @@ void Control::Initialize()
     GetImpl( styleManager ).ApplyThemeStyle( Toolkit::Control( GetOwner() ) );
   }
 
-  SetRequiresHoverEvents(mImpl->mFlags & REQUIRES_HOVER_EVENTS);
-  SetRequiresMouseWheelEvents(mImpl->mFlags & REQUIRES_MOUSE_WHEEL_EVENTS);
+  if( mImpl->mFlags & REQUIRES_KEYBOARD_NAVIGATION_SUPPORT )
+  {
+    SetKeyboardNavigationSupport( true );
+  }
 
-  mImpl->mInitialized = true;
+  // Calling deriving classes
+  OnInitialize();
 }
 
 void Control::EnableGestureDetection(Gesture::Type type)
@@ -839,14 +790,26 @@ void Control::OnInitialize()
 {
 }
 
-void Control::OnActivated()
+void Control::OnControlStageConnection()
+{
+}
+
+void Control::OnControlStageDisconnection()
+{
+}
+
+void Control::OnControlChildAdd( Actor& child )
+{
+}
+
+void Control::OnControlChildRemove( Actor& child )
 {
 }
 
-void Control::OnStyleChange( Toolkit::StyleManager styleManager, StyleChange change )
+void Control::OnStyleChange( Toolkit::StyleManager styleManager, StyleChange::Type change )
 {
   // By default the control is only interested in theme (not font) changes
-  if( change.themeChange )
+  if( change == StyleChange::THEME_CHANGE )
   {
     GetImpl( styleManager ).ApplyThemeStyle( Toolkit::Control( GetOwner() ) );
   }
@@ -880,59 +843,89 @@ void Control::OnLongPress( const LongPressGesture& longPress )
 {
 }
 
-void Control::OnControlStageConnection()
+void Control::OnControlSizeSet( const Vector3& size )
 {
 }
 
-void Control::OnControlStageDisconnection()
+void Control::EmitKeyInputFocusSignal( bool focusGained )
 {
-}
+  Dali::Toolkit::Control handle( GetOwner() );
 
-void Control::OnControlChildAdd( Actor& child )
-{
+  if ( focusGained )
+  {
+     // signals are allocated dynamically when someone connects
+     if ( !mImpl->mKeyInputFocusGainedSignal.Empty() )
+     {
+      mImpl->mKeyInputFocusGainedSignal.Emit( handle );
+     }
+  }
+  else
+  {
+    // signals are allocated dynamically when someone connects
+    if ( !mImpl->mKeyInputFocusLostSignal.Empty() )
+    {
+      mImpl->mKeyInputFocusLostSignal.Emit( handle );
+    }
+  }
 }
 
-void Control::OnControlChildRemove( Actor& child )
+void Control::OnKeyInputFocusGained()
 {
+  EmitKeyInputFocusSignal( true );
 }
 
-void Control::OnControlSizeSet( const Vector3& size )
+void Control::OnKeyInputFocusLost()
 {
+  EmitKeyInputFocusSignal( false );
 }
 
-void Control::OnCalculateRelayoutSize( Dimension dimension )
+void Control::OnStageConnection()
 {
+  // Notify derived classes.
+  OnControlStageConnection();
 }
 
-void Control::OnLayoutNegotiated( float size, Dimension dimension )
+void Control::OnStageDisconnection()
 {
+  // Notify derived classes
+  OnControlStageDisconnection();
 }
 
-void Control::OnRelayout( const Vector2& size, RelayoutContainer& container )
+void Control::OnChildAdd(Actor& child)
 {
-  for( unsigned int i = 0, numChildren = Self().GetChildCount(); i < numChildren; ++i )
+  // If this is the background actor, then we do not want to relayout or inform deriving classes
+  if ( mImpl->mBackground && ( child == mImpl->mBackground->actor ) )
   {
-    container.Add( Self().GetChildAt( i ), size );
+    return;
   }
-}
 
-void Control::OnSetResizePolicy( ResizePolicy policy, Dimension dimension )
-{
+  // Notify derived classes.
+  OnControlChildAdd( child );
 }
 
-void Control::OnKeyInputFocusGained()
+void Control::OnChildRemove(Actor& child)
 {
-  // Do Nothing
+  // If this is the background actor, then we do not want to relayout or inform deriving classes
+  if ( mImpl->mBackground && ( child == mImpl->mBackground->actor ) )
+  {
+    return;
+  }
+
+  // Notify derived classes.
+  OnControlChildRemove( child );
 }
 
-void Control::OnKeyInputFocusLost()
+void Control::OnSizeSet(const Vector3& targetSize)
 {
-  // Do Nothing
+  // Background is resized through size negotiation
+
+  // Notify derived classes.
+  OnControlSizeSet( targetSize );
 }
 
 void Control::OnSizeAnimation(Animation& animation, const Vector3& targetSize)
 {
-  // @todo consider animating negotiated child sizes to target size
+  // @todo size negotiate background to new size, animate as well?
 }
 
 bool Control::OnTouchEvent(const TouchEvent& event)
@@ -955,58 +948,73 @@ bool Control::OnMouseWheelEvent(const MouseWheelEvent& event)
   return false; // Do not consume
 }
 
-void Control::OnStageConnection()
+void Control::OnRelayout( const Vector2& size, RelayoutContainer& container )
 {
-  // Notify derived classes.
-  OnControlStageConnection();
+  for( unsigned int i = 0, numChildren = Self().GetChildCount(); i < numChildren; ++i )
+  {
+    container.Add( Self().GetChildAt( i ), size );
+  }
 }
 
-void Control::OnStageDisconnection()
+void Control::OnSetResizePolicy( ResizePolicy::Type policy, Dimension::Type dimension )
 {
-  // Notify derived classes
-  OnControlStageDisconnection();
 }
 
-void Control::OnChildAdd(Actor& child)
+Vector3 Control::GetNaturalSize()
 {
-  // If this is the background actor, then we do not want to relayout or inform deriving classes
-  if ( mImpl->mBackground && ( child == mImpl->mBackground->actor ) )
+  if( mImpl->mBackground )
   {
-    return;
+    Actor actor = mImpl->mBackground->actor;
+    if( actor )
+    {
+      return actor.GetNaturalSize();
+    }
   }
+  return Vector3();
+}
 
-  // Notify derived classes.
-  OnControlChildAdd( child );
+float Control::CalculateChildSize( const Dali::Actor& child, Dimension::Type dimension )
+{
+  return CalculateChildSizeBase( child, dimension );
 }
 
-void Control::OnChildRemove(Actor& child)
+float Control::GetHeightForWidth( float width )
 {
-  // If this is the background actor, then we do not want to relayout or inform deriving classes
-  if ( mImpl->mBackground && ( child == mImpl->mBackground->actor ) )
+  if( mImpl->mBackground )
   {
-    return;
+    Actor actor = mImpl->mBackground->actor;
+    if( actor )
+    {
+      return actor.GetHeightForWidth( width );
+    }
   }
-
-  // Notify derived classes.
-  OnControlChildRemove( child );
+  return GetHeightForWidthBase( width );
 }
 
-void Control::OnSizeSet(const Vector3& targetSize)
+float Control::GetWidthForHeight( float height )
 {
-  if( targetSize != mImpl->mNaturalSize )
+  if( mImpl->mBackground )
   {
-    // Only updates size if set through Actor's API
-    mImpl->mNaturalSize = targetSize;
+    Actor actor = mImpl->mBackground->actor;
+    if( actor )
+    {
+      return actor.GetWidthForHeight( height );
+    }
   }
+  return GetWidthForHeightBase( height );
+}
 
-  if( targetSize != mImpl->mCurrentSize )
-  {
-    // Update control size.
-    mImpl->mCurrentSize = targetSize;
+bool Control::RelayoutDependentOnChildren( Dimension::Type dimension )
+{
+  return RelayoutDependentOnChildrenBase( dimension );
+}
 
-    // Notify derived classes.
-    OnControlSizeSet( targetSize );
-  }
+void Control::OnCalculateRelayoutSize( Dimension::Type dimension )
+{
+}
+
+void Control::OnLayoutNegotiated( float size, Dimension::Type dimension )
+{
 }
 
 void Control::SignalConnected( SlotObserver* slotObserver, CallbackBase* callback )
@@ -1019,6 +1027,22 @@ void Control::SignalDisconnected( SlotObserver* slotObserver, CallbackBase* call
   mImpl->SignalDisconnected( slotObserver, callback );
 }
 
+Control& GetImplementation( Dali::Toolkit::Control& handle )
+{
+  CustomActorImpl& customInterface = handle.GetImplementation();
+  // downcast to control
+  Control& impl = dynamic_cast< Internal::Control& >( customInterface );
+  return impl;
+}
+
+const Control& GetImplementation( const Dali::Toolkit::Control& handle )
+{
+  const CustomActorImpl& customInterface = handle.GetImplementation();
+  // downcast to control
+  const Control& impl = dynamic_cast< const Internal::Control& >( customInterface );
+  return impl;
+}
+
 } // namespace Internal
 
 } // namespace Toolkit