The FocusChanged event callback is called before the FocusLost
[platform/core/uifw/dali-toolkit.git] / dali-toolkit / internal / focus-manager / keyboard-focus-manager-impl.cpp
index b10ff63..3df6d4b 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2022 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.
@@ -29,6 +29,7 @@
 #include <dali/public-api/animation/constraints.h>
 #include <dali/public-api/events/key-event.h>
 #include <dali/public-api/events/touch-event.h>
+#include <dali/public-api/events/wheel-event.h>
 #include <dali/public-api/object/property-map.h>
 #include <dali/public-api/object/type-registry-helper.h>
 #include <dali/public-api/object/type-registry.h>
@@ -118,6 +119,7 @@ KeyboardFocusManager::KeyboardFocusManager()
   mFocusedActorEnterKeySignal(),
   mCurrentFocusActor(),
   mFocusIndicatorActor(),
+  mFocusFinderRootActor(),
   mFocusHistory(),
   mSlotDelegate(this),
   mCustomAlgorithmInterface(NULL),
@@ -145,6 +147,8 @@ void KeyboardFocusManager::OnAdaptorInit()
     {
       (*iter).KeyEventSignal().Connect(mSlotDelegate, &KeyboardFocusManager::OnKeyEvent);
       (*iter).TouchedSignal().Connect(mSlotDelegate, &KeyboardFocusManager::OnTouch);
+      (*iter).WheelEventGeneratedSignal().Connect(mSlotDelegate, &KeyboardFocusManager::OnCustomWheelEvent);
+      (*iter).WheelEventSignal().Connect(mSlotDelegate, &KeyboardFocusManager::OnWheelEvent);
       Dali::Window window = DevelWindow::DownCast(*iter);
       if(window)
       {
@@ -161,6 +165,8 @@ void KeyboardFocusManager::OnSceneHolderCreated(Dali::Integration::SceneHolder&
 {
   sceneHolder.KeyEventSignal().Connect(mSlotDelegate, &KeyboardFocusManager::OnKeyEvent);
   sceneHolder.TouchedSignal().Connect(mSlotDelegate, &KeyboardFocusManager::OnTouch);
+  sceneHolder.WheelEventGeneratedSignal().Connect(mSlotDelegate, &KeyboardFocusManager::OnCustomWheelEvent);
+  sceneHolder.WheelEventSignal().Connect(mSlotDelegate, &KeyboardFocusManager::OnWheelEvent);
   Dali::Window window = DevelWindow::DownCast(sceneHolder);
   if(window)
   {
@@ -177,8 +183,10 @@ void KeyboardFocusManager::GetConfigurationFromStyleManger()
   Toolkit::StyleManager styleManager = Toolkit::StyleManager::Get();
   if(styleManager)
   {
-    Property::Map config   = Toolkit::DevelStyleManager::GetConfigurations(styleManager);
-    mAlwaysShowIndicator   = config["alwaysShowFocus"].Get<bool>() ? ALWAYS_SHOW : NONE;
+    const Property::Map& config               = Toolkit::DevelStyleManager::GetConfigurations(styleManager);
+    const auto           alwaysShowFocusValue = config.Find("alwaysShowFocus", Property::Type::BOOLEAN);
+
+    mAlwaysShowIndicator   = (alwaysShowFocusValue && alwaysShowFocusValue->Get<bool>()) ? ALWAYS_SHOW : NONE;
     mIsFocusIndicatorShown = (mAlwaysShowIndicator == ALWAYS_SHOW) ? SHOW : HIDE;
     mClearFocusOnTouch     = (mIsFocusIndicatorShown == SHOW) ? false : true;
   }
@@ -199,53 +207,45 @@ bool KeyboardFocusManager::SetCurrentFocusActor(Actor actor)
 bool KeyboardFocusManager::DoSetCurrentFocusActor(Actor actor)
 {
   bool success = false;
-  if(actor && actor.GetProperty<bool>(Actor::Property::KEYBOARD_FOCUSABLE) && actor.GetProperty<bool>(Actor::Property::CONNECTED_TO_SCENE))
-  {
-    Integration::SceneHolder currentWindow = Integration::SceneHolder::Get(actor);
-
-    if(currentWindow.GetRootLayer() != mCurrentFocusedWindow.GetHandle())
-    {
-      Layer rootLayer       = currentWindow.GetRootLayer();
-      mCurrentFocusedWindow = rootLayer;
-    }
-  }
 
-  Actor currentFocusedActor = GetCurrentFocusActor();
-
-  // If developer set focus on same actor, doing nothing
-  if(actor == currentFocusedActor)
+  // Check whether the actor is in the stage and is keyboard focusable.
+  if(actor &&
+     actor.GetProperty<bool>(Actor::Property::KEYBOARD_FOCUSABLE) &&
+     actor.GetProperty<bool>(DevelActor::Property::USER_INTERACTION_ENABLED) &&
+     actor.GetProperty<bool>(Actor::Property::CONNECTED_TO_SCENE) &&
+     actor.GetProperty<bool>(Actor::Property::VISIBLE))
   {
-    if(!actor)
+    // If the parent's KEYBOARD_FOCUSABLE_CHILDREN is false, it cannot have focus.
+    Actor parent = actor.GetParent();
+    while(parent)
     {
-      return false;
+      if(!parent.GetProperty<bool>(DevelActor::Property::KEYBOARD_FOCUSABLE_CHILDREN))
+      {
+        DALI_LOG_INFO(gLogFilter, Debug::General, "[%s:%d] Parent Actor has KEYBOARD_FOCUSABLE_CHILDREN false\n", __FUNCTION__, __LINE__);
+        return false;
+      }
+      parent = parent.GetParent();
     }
-    return true;
-  }
 
-  // Check whether the actor is in the stage and is keyboard focusable.
-  if(actor && actor.GetProperty<bool>(Actor::Property::KEYBOARD_FOCUSABLE) && actor.GetProperty<bool>(Actor::Property::CONNECTED_TO_SCENE))
-  {
-    if((mIsFocusIndicatorShown == SHOW) && (mEnableFocusIndicator == ENABLE))
+    // If developer set focus on same actor, doing nothing
+    Actor currentFocusedActor = GetCurrentFocusActor();
+    if(actor == currentFocusedActor)
     {
-      actor.Add(GetFocusIndicatorActor());
+      return true;
     }
 
-    // Send notification for the change of focus actor
-    if(!mFocusChangedSignal.Empty())
+    Integration::SceneHolder currentWindow = Integration::SceneHolder::Get(actor);
+    if(currentWindow.GetRootLayer() != mCurrentFocusedWindow.GetHandle())
     {
-      mFocusChangedSignal.Emit(currentFocusedActor, actor);
+      Layer rootLayer       = currentWindow.GetRootLayer();
+      mCurrentFocusedWindow = rootLayer;
     }
 
-    Toolkit::Control currentlyFocusedControl = Toolkit::Control::DownCast(currentFocusedActor);
-    if(currentlyFocusedControl)
+    if((mIsFocusIndicatorShown == SHOW) && (mEnableFocusIndicator == ENABLE))
     {
-      // Do we need it to remember if it was previously DISABLED?
-      currentlyFocusedControl.SetProperty(DevelControl::Property::STATE, DevelControl::NORMAL);
-      currentlyFocusedControl.ClearKeyInputFocus();
+      actor.Add(GetFocusIndicatorActor());
     }
 
-    DALI_LOG_INFO(gLogFilter, Debug::General, "[%s:%d] Focus Changed\n", __FUNCTION__, __LINE__);
-
     // Save the current focused actor
     mCurrentFocusActor = actor;
 
@@ -265,6 +265,20 @@ bool KeyboardFocusManager::DoSetCurrentFocusActor(Actor actor)
       mCurrentFocusActors.push_back(std::pair<WeakHandle<Layer>, WeakHandle<Actor> >(mCurrentFocusedWindow, actor));
     }
 
+    // Send notification for the change of focus actor
+    if(!mFocusChangedSignal.Empty())
+    {
+      mFocusChangedSignal.Emit(currentFocusedActor, actor);
+    }
+
+    Toolkit::Control currentlyFocusedControl = Toolkit::Control::DownCast(currentFocusedActor);
+    if(currentlyFocusedControl)
+    {
+      // Do we need it to remember if it was previously DISABLED?
+      currentlyFocusedControl.SetProperty(DevelControl::Property::STATE, DevelControl::NORMAL);
+      currentlyFocusedControl.ClearKeyInputFocus();
+    }
+
     Toolkit::Control newlyFocusedControl = Toolkit::Control::DownCast(actor);
     if(newlyFocusedControl)
     {
@@ -402,18 +416,18 @@ Toolkit::Control KeyboardFocusManager::GetParentLayoutControl(Actor actor) const
   return Toolkit::Control::DownCast(parent);
 }
 
-bool KeyboardFocusManager::MoveFocus(Toolkit::Control::KeyboardFocus::Direction direction)
+bool KeyboardFocusManager::MoveFocus(Toolkit::Control::KeyboardFocus::Direction direction, const std::string& deviceName)
 {
   Actor currentFocusActor = GetCurrentFocusActor();
 
   bool succeed = false;
 
   // Go through the actor's hierarchy until we find a layout control that knows how to move the focus
-  Toolkit::Control parentLayoutControl = GetParentLayoutControl(currentFocusActor);
-  while(parentLayoutControl && !succeed)
+  Toolkit::Control layoutControl = IsLayoutControl(currentFocusActor) ? Toolkit::Control::DownCast(currentFocusActor) : GetParentLayoutControl(currentFocusActor);
+  while(layoutControl && !succeed)
   {
-    succeed             = DoMoveFocusWithinLayoutControl(parentLayoutControl, currentFocusActor, direction);
-    parentLayoutControl = GetParentLayoutControl(parentLayoutControl);
+    succeed       = DoMoveFocusWithinLayoutControl(layoutControl, currentFocusActor, direction);
+    layoutControl = GetParentLayoutControl(layoutControl);
   }
 
   if(!succeed)
@@ -452,6 +466,16 @@ bool KeyboardFocusManager::MoveFocus(Toolkit::Control::KeyboardFocus::Direction
           index = Toolkit::DevelControl::Property::DOWN_FOCUSABLE_ACTOR_ID;
           break;
         }
+        case Toolkit::Control::KeyboardFocus::CLOCKWISE:
+        {
+          index = Toolkit::DevelControl::Property::CLOCKWISE_FOCUSABLE_ACTOR_ID;
+          break;
+        }
+        case Toolkit::Control::KeyboardFocus::COUNTER_CLOCKWISE:
+        {
+          index = Toolkit::DevelControl::Property::COUNTER_CLOCKWISE_FOCUSABLE_ACTOR_ID;
+          break;
+        }
         default:
           break;
       }
@@ -488,7 +512,7 @@ bool KeyboardFocusManager::MoveFocus(Toolkit::Control::KeyboardFocus::Direction
       if(mCustomAlgorithmInterface)
       {
         mIsWaitingKeyboardFocusChangeCommit = true;
-        nextFocusableActor                  = mCustomAlgorithmInterface->GetNextFocusableActor(currentFocusActor, Actor(), direction);
+        nextFocusableActor                  = mCustomAlgorithmInterface->GetNextFocusableActor(currentFocusActor, Actor(), direction, deviceName);
         mIsWaitingKeyboardFocusChangeCommit = false;
       }
       else if(!mPreFocusChangeSignal.Empty())
@@ -500,12 +524,33 @@ bool KeyboardFocusManager::MoveFocus(Toolkit::Control::KeyboardFocus::Direction
       }
       else if(mEnableDefaultAlgorithm)
       {
-        // We should find it among the actors nearby.
-        nextFocusableActor = Toolkit::FocusFinder::GetNearestFocusableActor(currentFocusActor, direction);
+        Actor rootActor = mFocusFinderRootActor.GetHandle();
+        if(!rootActor)
+        {
+          if(currentFocusActor)
+          {
+            // Find the window of the focused actor.
+            Integration::SceneHolder window = Integration::SceneHolder::Get(currentFocusActor);
+            if(window)
+            {
+              rootActor = window.GetRootLayer();
+            }
+          }
+          else
+          {
+            // Searches from the currently focused window.
+            rootActor = mCurrentFocusedWindow.GetHandle();
+          }
+        }
+        if(rootActor)
+        {
+          // We should find it among the actors nearby.
+          nextFocusableActor = Toolkit::FocusFinder::GetNearestFocusableActor(rootActor, currentFocusActor, direction);
+        }
       }
     }
 
-    if(nextFocusableActor && nextFocusableActor.GetProperty<bool>(Actor::Property::KEYBOARD_FOCUSABLE))
+    if(nextFocusableActor && nextFocusableActor.GetProperty<bool>(Actor::Property::KEYBOARD_FOCUSABLE) && nextFocusableActor.GetProperty<bool>(DevelActor::Property::USER_INTERACTION_ENABLED))
     {
       // Whether the next focusable actor is a layout control
       if(IsLayoutControl(nextFocusableActor))
@@ -514,9 +559,9 @@ bool KeyboardFocusManager::MoveFocus(Toolkit::Control::KeyboardFocus::Direction
         Toolkit::Control layoutControl = Toolkit::Control::DownCast(nextFocusableActor);
         succeed                        = DoMoveFocusWithinLayoutControl(layoutControl, currentFocusActor, direction);
       }
-      else
+      if(!succeed)
       {
-        // Otherwise, just set focus to the next focusable actor
+        // Just set focus to the next focusable actor
         succeed = SetCurrentFocusActor(nextFocusableActor);
       }
     }
@@ -531,7 +576,7 @@ bool KeyboardFocusManager::DoMoveFocusWithinLayoutControl(Toolkit::Control contr
   Actor nextFocusableActor = GetImplementation(control).GetNextKeyboardFocusableActor(actor, direction, mFocusGroupLoopEnabled);
   if(nextFocusableActor)
   {
-    if(!nextFocusableActor.GetProperty<bool>(Actor::Property::KEYBOARD_FOCUSABLE))
+    if(!(nextFocusableActor.GetProperty<bool>(Actor::Property::KEYBOARD_FOCUSABLE) || nextFocusableActor.GetProperty<bool>(DevelActor::Property::USER_INTERACTION_ENABLED)))
     {
       // If the actor is not focusable, ask the same layout control for the next actor to focus
       return DoMoveFocusWithinLayoutControl(control, nextFocusableActor, direction);
@@ -550,10 +595,10 @@ bool KeyboardFocusManager::DoMoveFocusWithinLayoutControl(Toolkit::Control contr
         mIsWaitingKeyboardFocusChangeCommit = false;
       }
 
-      if(committedFocusActor && committedFocusActor.GetProperty<bool>(Actor::Property::KEYBOARD_FOCUSABLE))
+      if(committedFocusActor && committedFocusActor.GetProperty<bool>(Actor::Property::KEYBOARD_FOCUSABLE) && committedFocusActor.GetProperty<bool>(DevelActor::Property::USER_INTERACTION_ENABLED))
       {
         // Whether the commited focusable actor is a layout control
-        if(IsLayoutControl(committedFocusActor))
+        if(IsLayoutControl(committedFocusActor) && committedFocusActor != control)
         {
           // If so, move the focus inside it.
           Toolkit::Control layoutControl = Toolkit::Control::DownCast(committedFocusActor);
@@ -632,14 +677,10 @@ void KeyboardFocusManager::DoKeyboardEnter(Actor actor)
 
 void KeyboardFocusManager::ClearFocus()
 {
+  ClearFocusIndicator();
   Actor actor = GetCurrentFocusActor();
   if(actor)
   {
-    if(mFocusIndicatorActor)
-    {
-      actor.Remove(mFocusIndicatorActor);
-    }
-
     // Send notification for the change of focus actor
     if(!mFocusChangedSignal.Empty())
     {
@@ -653,8 +694,19 @@ void KeyboardFocusManager::ClearFocus()
       currentlyFocusedControl.ClearKeyInputFocus();
     }
   }
-
   mCurrentFocusActor.Reset();
+}
+
+void KeyboardFocusManager::ClearFocusIndicator()
+{
+  Actor actor = GetCurrentFocusActor();
+  if(actor)
+  {
+    if(mFocusIndicatorActor)
+    {
+      actor.Remove(mFocusIndicatorActor);
+    }
+  }
   mIsFocusIndicatorShown = (mAlwaysShowIndicator == ALWAYS_SHOW) ? SHOW : HIDE;
 }
 
@@ -749,7 +801,8 @@ Actor KeyboardFocusManager::GetFocusIndicatorActor()
 
 void KeyboardFocusManager::OnKeyEvent(const KeyEvent& event)
 {
-  std::string keyName = event.GetKeyName();
+  const std::string& keyName    = event.GetKeyName();
+  const std::string& deviceName = event.GetDeviceName();
 
   if(mIsFocusIndicatorShown == UNKNOWN)
   {
@@ -762,48 +815,30 @@ void KeyboardFocusManager::OnKeyEvent(const KeyEvent& event)
   {
     if(keyName == "Left")
     {
-      if(!mIsFocusIndicatorShown)
+      if(mIsFocusIndicatorShown == HIDE)
       {
-        if(mIsFocusIndicatorShown == HIDE)
-        {
-          // Show focus indicator
-          mIsFocusIndicatorShown = SHOW;
-        }
-        else
-        {
-          // Move the focus towards left
-          MoveFocus(Toolkit::Control::KeyboardFocus::LEFT);
-        }
-
-        isFocusStartableKey = true;
+        // Show focus indicator
+        mIsFocusIndicatorShown = SHOW;
       }
       else
       {
         // Move the focus towards left
-        MoveFocus(Toolkit::Control::KeyboardFocus::LEFT);
+        MoveFocus(Toolkit::Control::KeyboardFocus::LEFT, deviceName);
       }
 
       isFocusStartableKey = true;
     }
     else if(keyName == "Right")
     {
-      if(!mIsFocusIndicatorShown)
+      if(mIsFocusIndicatorShown == HIDE)
       {
-        if(mIsFocusIndicatorShown == HIDE)
-        {
-          // Show focus indicator
-          mIsFocusIndicatorShown = SHOW;
-        }
-        else
-        {
-          // Move the focus towards right
-          MoveFocus(Toolkit::Control::KeyboardFocus::RIGHT);
-        }
+        // Show focus indicator
+        mIsFocusIndicatorShown = SHOW;
       }
       else
       {
         // Move the focus towards right
-        MoveFocus(Toolkit::Control::KeyboardFocus::RIGHT);
+        MoveFocus(Toolkit::Control::KeyboardFocus::RIGHT, deviceName);
       }
 
       isFocusStartableKey = true;
@@ -818,7 +853,7 @@ void KeyboardFocusManager::OnKeyEvent(const KeyEvent& event)
       else
       {
         // Move the focus towards up
-        MoveFocus(Toolkit::Control::KeyboardFocus::UP);
+        MoveFocus(Toolkit::Control::KeyboardFocus::UP, deviceName);
       }
 
       isFocusStartableKey = true;
@@ -833,7 +868,7 @@ void KeyboardFocusManager::OnKeyEvent(const KeyEvent& event)
       else
       {
         // Move the focus towards down
-        MoveFocus(Toolkit::Control::KeyboardFocus::DOWN);
+        MoveFocus(Toolkit::Control::KeyboardFocus::DOWN, deviceName);
       }
 
       isFocusStartableKey = true;
@@ -848,7 +883,7 @@ void KeyboardFocusManager::OnKeyEvent(const KeyEvent& event)
       else
       {
         // Move the focus towards the previous page
-        MoveFocus(Toolkit::Control::KeyboardFocus::PAGE_UP);
+        MoveFocus(Toolkit::Control::KeyboardFocus::PAGE_UP, deviceName);
       }
 
       isFocusStartableKey = true;
@@ -863,7 +898,7 @@ void KeyboardFocusManager::OnKeyEvent(const KeyEvent& event)
       else
       {
         // Move the focus towards the next page
-        MoveFocus(Toolkit::Control::KeyboardFocus::PAGE_DOWN);
+        MoveFocus(Toolkit::Control::KeyboardFocus::PAGE_DOWN, deviceName);
       }
 
       isFocusStartableKey = true;
@@ -881,12 +916,8 @@ void KeyboardFocusManager::OnKeyEvent(const KeyEvent& event)
         // "Shift-Tab" key changes it in the backward direction.
         if(!DoMoveFocusToNextFocusGroup(!event.IsShiftModifier()))
         {
-          // If the focus group is not changed, Move the focus towards right, "Shift-Tap" key moves the focus towards left.
-          if(!MoveFocus(event.IsShiftModifier() ? Toolkit::Control::KeyboardFocus::LEFT : Toolkit::Control::KeyboardFocus::RIGHT))
-          {
-            // If the focus is not moved, Move the focus towards down, "Shift-Tap" key moves the focus towards up.
-            MoveFocus(event.IsShiftModifier() ? Toolkit::Control::KeyboardFocus::UP : Toolkit::Control::KeyboardFocus::DOWN);
-          }
+          // If the focus group is not changed, Move the focus towards forward, "Shift-Tap" key moves the focus towards backward.
+          MoveFocus(event.IsShiftModifier() ? Toolkit::Control::KeyboardFocus::BACKWARD : Toolkit::Control::KeyboardFocus::FORWARD, deviceName);
         }
       }
 
@@ -959,7 +990,7 @@ void KeyboardFocusManager::OnKeyEvent(const KeyEvent& event)
     {
       // No actor is focused but keyboard focus is activated by the key press
       // Let's try to move the initial focus
-      MoveFocus(Toolkit::Control::KeyboardFocus::RIGHT);
+      MoveFocus(Toolkit::Control::KeyboardFocus::RIGHT, deviceName);
     }
   }
 }
@@ -977,21 +1008,86 @@ void KeyboardFocusManager::OnTouch(const TouchEvent& touch)
   // We only do this on a Down event, otherwise the clear action may override a manually focused actor.
   if(((touch.GetPointCount() < 1) || (touch.GetState(0) == PointState::DOWN)))
   {
-    // If mClearFocusOnTouch is false, do not clear the focus even if user touch the screen.
-    if(mClearFocusOnTouch)
+    // If you touch the currently focused actor again, you don't need to do SetCurrentFocusActor again.
+    Actor hitActor = touch.GetHitActor(0);
+    if(hitActor && hitActor == GetCurrentFocusActor())
     {
-      ClearFocus();
+      return;
     }
-
     // If KEYBOARD_FOCUSABLE and TOUCH_FOCUSABLE is true, set focus actor
-    Actor hitActor = touch.GetHitActor(0);
     if(hitActor && hitActor.GetProperty<bool>(Actor::Property::KEYBOARD_FOCUSABLE) && hitActor.GetProperty<bool>(DevelActor::Property::TOUCH_FOCUSABLE))
     {
+      // If mClearFocusOnTouch is false, do not clear the focus
+      if(mClearFocusOnTouch)
+      {
+        ClearFocus();
+      }
       SetCurrentFocusActor(hitActor);
     }
+    else
+    {
+      // If mClearFocusOnTouch is false, do not clear the focus indicator even if user touch the screen.
+      if(mClearFocusOnTouch)
+      {
+        ClearFocusIndicator();
+      }
+    }
+  }
+}
+
+void KeyboardFocusManager::OnWheelEvent(const WheelEvent& event)
+{
+  if(event.GetType() == Dali::WheelEvent::CUSTOM_WHEEL)
+  {
+    Toolkit::Control::KeyboardFocus::Direction direction = (event.GetDelta() > 0) ? Toolkit::Control::KeyboardFocus::CLOCKWISE : Toolkit::Control::KeyboardFocus::COUNTER_CLOCKWISE;
+    // Move the focus
+    MoveFocus(direction);
   }
 }
 
+bool KeyboardFocusManager::OnCustomWheelEvent(const WheelEvent& event)
+{
+  bool  consumed = false;
+  Actor actor    = GetCurrentFocusActor();
+  if(actor)
+  {
+    // Notify the actor about the wheel event
+    consumed = EmitCustomWheelSignals(actor, event);
+  }
+  return consumed;
+}
+
+bool KeyboardFocusManager::EmitCustomWheelSignals(Actor actor, const WheelEvent& event)
+{
+  bool consumed = false;
+
+  if(actor)
+  {
+    Dali::Actor oldParent(actor.GetParent());
+
+    // Only do the conversion and emit the signal if the actor's wheel signal has connections.
+    if(!actor.WheelEventSignal().Empty())
+    {
+      // Emit the signal to the parent
+      consumed = actor.WheelEventSignal().Emit(actor, event);
+    }
+    // if actor doesn't consume WheelEvent, give WheelEvent to its parent.
+    if(!consumed)
+    {
+      // The actor may have been removed/reparented during the signal callbacks.
+      Dali::Actor parent = actor.GetParent();
+
+      if(parent &&
+         (parent == oldParent))
+      {
+        consumed = EmitCustomWheelSignals(parent, event);
+      }
+    }
+  }
+
+  return consumed;
+}
+
 void KeyboardFocusManager::OnWindowFocusChanged(Window window, bool focusIn)
 {
   if(focusIn && mCurrentFocusedWindow.GetHandle() != window.GetRootLayer())
@@ -1095,6 +1191,16 @@ bool KeyboardFocusManager::IsDefaultAlgorithmEnabled() const
   return mEnableDefaultAlgorithm;
 }
 
+void KeyboardFocusManager::SetFocusFinderRootActor(Actor actor)
+{
+  mFocusFinderRootActor = actor;
+}
+
+void KeyboardFocusManager::ResetFocusFinderRootActor()
+{
+  mFocusFinderRootActor.Reset();
+}
+
 } // namespace Internal
 
 } // namespace Toolkit