base/dali-toolkit/internal/focus-manager/keyboard-focus-manager-impl.cpp

   1 /*
   2  * Copyright (c) 2014 Samsung Electronics Co., Ltd.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  *
  16  */
  17
  18 // CLASS HEADER
  19 #include "keyboard-focus-manager-impl.h"
  20
  21 // INTERNAL INCLUDES
  22 #include <dali-toolkit/public-api/controls/control.h>
  23 #include <dali-toolkit/public-api/controls/control-impl.h>
  24 #include <dali-toolkit/public-api/focus-manager/focus-manager.h>
  25 #include <dali-toolkit/public-api/focus-manager/keyinput-focus-manager.h>
  26 #include <dali/integration-api/debug.h>
  27
  28 namespace Dali
  29 {
  30
  31 namespace Toolkit
  32 {
  33
  34 namespace Internal
  35 {
  36
  37 namespace // unnamed namespace
  38 {
  39
  40 #if defined(DEBUG_ENABLED)
  41 Debug::Filter* gLogFilter = Debug::Filter::New(Debug::NoLogging, false, "LOG_KEYBOARD_FOCUS_MANAGER");
  42 #endif
  43
  44 const std::string IS_FOCUS_GROUP_PROPERTY_NAME("is-keyboard-focus-group"); // This property will be replaced by a flag in Control.
  45
  46 const char* FOCUS_BORDER_IMAGE_PATH = DALI_IMAGE_DIR "keyboard_focus.png";
  47 const Vector4 FOCUS_BORDER_IMAGE_BORDER = Vector4(7.0f, 7.0f, 7.0f, 7.0f);
  48
  49 BaseHandle Create()
  50 {
  51   BaseHandle handle = KeyboardFocusManager::Get();
  52
  53   if ( !handle )
  54   {
  55     SingletonService singletonService( SingletonService::Get() );
  56     if ( singletonService )
  57     {
  58       Toolkit::KeyboardFocusManager manager = Toolkit::KeyboardFocusManager( new Internal::KeyboardFocusManager() );
  59       singletonService.Register( typeid( manager ), manager );
  60       handle = manager;
  61     }
  62   }
  63
  64   return handle;
  65 }
  66 TypeRegistration KEYBOARD_FOCUS_MANAGER_TYPE( typeid(Dali::Toolkit::KeyboardFocusManager), typeid(Dali::BaseHandle), Create, true /* Create instance at startup */ );
  67
  68 } // unnamed namespace
  69
  70 Toolkit::KeyboardFocusManager KeyboardFocusManager::Get()
  71 {
  72   Toolkit::KeyboardFocusManager manager;
  73
  74   SingletonService singletonService( SingletonService::Get() );
  75   if ( singletonService )
  76   {
  77     // Check whether the keyboard focus manager is already created
  78     Dali::BaseHandle handle = singletonService.GetSingleton( typeid( Toolkit::KeyboardFocusManager ) );
  79     if(handle)
  80     {
  81       // If so, downcast the handle of singleton to keyboard focus manager
  82       manager = Toolkit::KeyboardFocusManager( dynamic_cast< KeyboardFocusManager* >( handle.GetObjectPtr() ) );
  83     }
  84   }
  85
  86   return manager;
  87 }
  88
  89 KeyboardFocusManager::KeyboardFocusManager()
  90 : mCurrentFocusActor(0),
  91   mFocusIndicatorActor(Actor()),
  92   mFocusGroupLoopEnabled(false),
  93   mIsKeyboardFocusEnabled(false),
  94   mIsFocusIndicatorEnabled(false),
  95   mIsWaitingKeyboardFocusChangeCommit(false),
  96   mSlotDelegate(this)
  97 {
  98   CreateDefaultFocusIndicatorActor();
  99
 100   OnPhysicalKeyboardStatusChanged(PhysicalKeyboard::Get());
 101
 102   Toolkit::KeyInputFocusManager::Get().UnhandledKeyEventSignal().Connect(mSlotDelegate, &KeyboardFocusManager::OnKeyEvent);
 103   Stage::GetCurrent().TouchedSignal().Connect(mSlotDelegate, &KeyboardFocusManager::OnTouched);
 104   PhysicalKeyboard::Get().StatusChangedSignal().Connect(mSlotDelegate, &KeyboardFocusManager::OnPhysicalKeyboardStatusChanged);
 105 }
 106
 107 KeyboardFocusManager::~KeyboardFocusManager()
 108 {
 109 }
 110
 111 bool KeyboardFocusManager::SetCurrentFocusActor(Actor actor)
 112 {
 113   DALI_ASSERT_DEBUG( !mIsWaitingKeyboardFocusChangeCommit && "Calling this function in the PreFocusChangeSignal callback?" );
 114
 115   if(actor)
 116   {
 117     return DoSetCurrentFocusActor(actor.GetId());
 118   }
 119
 120   return false;
 121 }
 122
 123 bool KeyboardFocusManager::DoSetCurrentFocusActor(const unsigned int actorID)
 124 {
 125   Actor rootActor = Stage::GetCurrent().GetRootLayer();
 126   Actor actor = rootActor.FindChildById(actorID);
 127
 128   // Check whether the actor is in the stage
 129   if(actor)
 130   {
 131     // Set the focus only when the actor is keyboard focusable
 132     if(actor.IsKeyboardFocusable())
 133     {
 134       // Draw the focus indicator upon the focused actor
 135       if(mIsFocusIndicatorEnabled && mFocusIndicatorActor)
 136       {
 137         actor.Add(mFocusIndicatorActor);
 138       }
 139
 140       // Send notification for the change of focus actor
 141       if( !mFocusChangedSignalV2.Empty() )
 142       {
 143         mFocusChangedSignalV2.Emit(GetCurrentFocusActor(), actor);
 144       }
 145
 146       DALI_LOG_INFO( gLogFilter, Debug::General, "[%s:%d] Focus Changed\n", __FUNCTION__, __LINE__);
 147
 148       // Save the current focused actor
 149       mCurrentFocusActor = actorID;
 150
 151       // Move the accessibility focus to the same actor
 152 //      Toolkit::FocusManager focusManager = Toolkit::FocusManager::Get();
 153 //      focusManager.SetCurrentFocusActor(actor);
 154
 155       DALI_LOG_INFO( gLogFilter, Debug::General, "[%s:%d] SUCCEED\n", __FUNCTION__, __LINE__);
 156       return true;
 157     }
 158   }
 159
 160   DALI_LOG_WARNING("[%s:%d] FAILED\n", __FUNCTION__, __LINE__);
 161   return false;
 162 }
 163
 164 Actor KeyboardFocusManager::GetCurrentFocusActor()
 165 {
 166   Actor rootActor = Stage::GetCurrent().GetRootLayer();
 167   return rootActor.FindChildById(mCurrentFocusActor);
 168 }
 169
 170 Actor KeyboardFocusManager::GetCurrentFocusGroup()
 171 {
 172   return GetFocusGroup(GetCurrentFocusActor());
 173 }
 174
 175 bool KeyboardFocusManager::IsLayoutControl(Actor actor) const
 176 {
 177   Toolkit::Control control = Toolkit::Control::DownCast(actor);
 178   return control && control.GetImplementation().IsKeyboardNavigationSupported();
 179 }
 180
 181 Toolkit::Control KeyboardFocusManager::GetParentLayoutControl(Actor actor) const
 182 {
 183   // Get the actor's parent layout control that supports two dimensional keyboard navigation
 184   Actor rootActor = Stage::GetCurrent().GetRootLayer();
 185   Actor parent;
 186   if(actor)
 187   {
 188     parent = actor.GetParent();
 189   }
 190
 191   while( parent && !IsLayoutControl(parent) && parent != rootActor )
 192   {
 193     parent = parent.GetParent();
 194   }
 195
 196   return Toolkit::Control::DownCast(parent);
 197 }
 198
 199 bool KeyboardFocusManager::MoveFocus(Toolkit::Control::KeyboardFocusNavigationDirection direction)
 200 {
 201   Actor currentFocusActor = GetCurrentFocusActor();
 202
 203   bool succeed = false;
 204
 205   // Go through the actor's hierarchy until we find a layout control that knows how to move the focus
 206   Toolkit::Control parentLayoutControl = GetParentLayoutControl(currentFocusActor);
 207   while(parentLayoutControl && !succeed)
 208   {
 209     succeed = DoMoveFocusWithinLayoutControl(parentLayoutControl, currentFocusActor, direction);
 210     parentLayoutControl = GetParentLayoutControl(parentLayoutControl);
 211   }
 212
 213   if(!succeed && !mPreFocusChangeSignalV2.Empty())
 214   {
 215     // Don't know how to move the focus further. The application needs to tell us which actor to move the focus to
 216     mIsWaitingKeyboardFocusChangeCommit = true;
 217     Actor nextFocusableActor = mPreFocusChangeSignalV2.Emit(currentFocusActor, Actor(), direction);
 218     mIsWaitingKeyboardFocusChangeCommit = false;
 219
 220     if ( nextFocusableActor && nextFocusableActor.IsKeyboardFocusable() )
 221     {
 222       // Whether the next focusable actor is a layout control
 223       if(IsLayoutControl(nextFocusableActor))
 224       {
 225         // If so, move the focus inside it.
 226         Toolkit::Control layoutControl = Toolkit::Control::DownCast(nextFocusableActor);
 227         succeed = DoMoveFocusWithinLayoutControl(layoutControl, currentFocusActor, direction);
 228       }
 229       else
 230       {
 231         // Otherwise, just set focus to the next focusable actor
 232         succeed = SetCurrentFocusActor(nextFocusableActor);
 233       }
 234     }
 235   }
 236
 237   return succeed;
 238 }
 239
 240 bool KeyboardFocusManager::DoMoveFocusWithinLayoutControl(Toolkit::Control control, Actor actor, Toolkit::Control::KeyboardFocusNavigationDirection direction)
 241 {
 242   // Ask the control for the next actor to focus
 243   Actor nextFocusableActor = control.GetImplementation().GetNextKeyboardFocusableActor(actor, direction, mFocusGroupLoopEnabled);
 244   if(nextFocusableActor)
 245   {
 246     if(!nextFocusableActor.IsKeyboardFocusable())
 247     {
 248       // If the actor is not focusable, ask the same layout control for the next actor to focus
 249       return DoMoveFocusWithinLayoutControl(control, nextFocusableActor, direction);
 250     }
 251     else
 252     {
 253       Actor currentFocusActor = GetCurrentFocusActor();
 254       Actor committedFocusActor = nextFocusableActor;
 255
 256       // We will try to move the focus to the actor. Emit a signal to notify the proposed actor to focus
 257       // Signal handler can check the proposed actor and return a different actor if it wishes.
 258       if( !mPreFocusChangeSignalV2.Empty() )
 259       {
 260         mIsWaitingKeyboardFocusChangeCommit = true;
 261         committedFocusActor = mPreFocusChangeSignalV2.Emit(currentFocusActor, nextFocusableActor, direction);
 262         mIsWaitingKeyboardFocusChangeCommit = false;
 263       }
 264
 265       if (committedFocusActor && committedFocusActor.IsKeyboardFocusable())
 266       {
 267         // Whether the commited focusable actor is a layout control
 268         if(IsLayoutControl(committedFocusActor))
 269         {
 270           // If so, move the focus inside it.
 271           Toolkit::Control layoutControl = Toolkit::Control::DownCast(committedFocusActor);
 272           return DoMoveFocusWithinLayoutControl(layoutControl, currentFocusActor, direction);
 273         }
 274         else
 275         {
 276           // Otherwise, just set focus to the next focusable actor
 277           if(committedFocusActor == nextFocusableActor)
 278           {
 279             // If the application hasn't changed our proposed actor, we informs the layout control we will
 280             // move the focus to what the control returns. The control might wish to perform some actions
 281             // before the focus is actually moved.
 282             control.GetImplementation().OnKeyboardFocusChangeCommitted(committedFocusActor);
 283           }
 284
 285           return SetCurrentFocusActor(committedFocusActor);
 286         }
 287       }
 288       else
 289       {
 290         return false;
 291       }
 292     }
 293   }
 294   else
 295   {
 296     // No more actor can be focused in the given direction within the same layout control.
 297     return false;
 298   }
 299 }
 300
 301 bool KeyboardFocusManager::DoMoveFocusToNextFocusGroup(bool forward)
 302 {
 303   bool succeed = false;
 304
 305   // Get the parent layout control of the current focus group
 306   Toolkit::Control parentLayoutControl = GetParentLayoutControl(GetCurrentFocusGroup());
 307
 308   while(parentLayoutControl && !succeed)
 309   {
 310     // If the current focus group has a parent layout control, we can probably automatically
 311     // move the focus to the next focus group in the forward or backward direction.
 312     Toolkit::Control::KeyboardFocusNavigationDirection direction = forward ? Toolkit::Control::Right : Toolkit::Control::Left;
 313     succeed = DoMoveFocusWithinLayoutControl(parentLayoutControl, GetCurrentFocusActor(), direction);
 314     parentLayoutControl = GetParentLayoutControl(parentLayoutControl);
 315   }
 316
 317   if(!mFocusGroupChangedSignalV2.Empty())
 318   {
 319     // Emit a focus group changed signal. The applicaton can move the focus to a new focus group
 320     mFocusGroupChangedSignalV2.Emit(GetCurrentFocusActor(), forward);
 321   }
 322
 323   return succeed;
 324 }
 325
 326 void KeyboardFocusManager::DoActivate(Actor actor)
 327 {
 328   if(actor)
 329   {
 330     Toolkit::Control control = Toolkit::Control::DownCast(actor);
 331     if(control)
 332     {
 333       // Notify the control that it is activated
 334       control.GetImplementation().OnActivated();
 335     }
 336
 337     // Send notification for the activation of focused actor
 338     if( !mFocusedActorActivatedSignalV2.Empty() )
 339     {
 340       mFocusedActorActivatedSignalV2.Emit(actor);
 341     }
 342   }
 343 }
 344
 345 void KeyboardFocusManager::ClearFocus()
 346 {
 347   Actor actor = GetCurrentFocusActor();
 348   if(actor)
 349   {
 350     if(mFocusIndicatorActor)
 351     {
 352       actor.Remove(mFocusIndicatorActor);
 353     }
 354
 355     // Send notification for the change of focus actor
 356     if( !mFocusChangedSignalV2.Empty() )
 357     {
 358       mFocusChangedSignalV2.Emit(actor, Actor());
 359     }
 360   }
 361
 362   mCurrentFocusActor = 0;
 363   mIsFocusIndicatorEnabled = false;
 364 }
 365
 366 void KeyboardFocusManager::SetFocusGroupLoop(bool enabled)
 367 {
 368   mFocusGroupLoopEnabled = enabled;
 369 }
 370
 371 bool KeyboardFocusManager::GetFocusGroupLoop() const
 372 {
 373   return mFocusGroupLoopEnabled;
 374 }
 375
 376 void KeyboardFocusManager::SetAsFocusGroup(Actor actor, bool isFocusGroup)
 377 {
 378   if(actor)
 379   {
 380     // Create focus group property if not already created.
 381     Property::Index propertyIsFocusGroup = actor.GetPropertyIndex(IS_FOCUS_GROUP_PROPERTY_NAME);
 382     if(propertyIsFocusGroup == Property::INVALID_INDEX)
 383     {
 384       propertyIsFocusGroup = actor.RegisterProperty(IS_FOCUS_GROUP_PROPERTY_NAME, isFocusGroup);
 385     }
 386     else
 387     {
 388       actor.SetProperty(propertyIsFocusGroup, isFocusGroup);
 389     }
 390   }
 391 }
 392
 393 bool KeyboardFocusManager::IsFocusGroup(Actor actor) const
 394 {
 395   // Check whether the actor is a focus group
 396   bool isFocusGroup = false;
 397
 398   if(actor)
 399   {
 400     Property::Index propertyIsFocusGroup = actor.GetPropertyIndex(IS_FOCUS_GROUP_PROPERTY_NAME);
 401     if(propertyIsFocusGroup != Property::INVALID_INDEX)
 402     {
 403       isFocusGroup = actor.GetProperty<bool>(propertyIsFocusGroup);
 404     }
 405   }
 406
 407   return isFocusGroup;
 408 }
 409
 410 Actor KeyboardFocusManager::GetFocusGroup(Actor actor)
 411 {
 412   // Go through the actor's hierarchy to check which focus group the actor belongs to
 413   while (actor && !IsFocusGroup(actor))
 414   {
 415     actor = actor.GetParent();
 416   }
 417
 418   return actor;
 419 }
 420
 421 void KeyboardFocusManager::SetFocusIndicatorActor(Actor indicator)
 422 {
 423   if(mFocusIndicatorActor != indicator)
 424   {
 425     Actor currentFocusActor = GetCurrentFocusActor();
 426     if(currentFocusActor)
 427     {
 428       // The new focus indicator should be added to the current focused actor immediately
 429       if(mFocusIndicatorActor)
 430       {
 431         currentFocusActor.Remove(mFocusIndicatorActor);
 432       }
 433
 434       if(indicator)
 435       {
 436         currentFocusActor.Add(indicator);
 437       }
 438     }
 439
 440     mFocusIndicatorActor = indicator;
 441   }
 442 }
 443
 444 Actor KeyboardFocusManager::GetFocusIndicatorActor()
 445 {
 446   return mFocusIndicatorActor;
 447 }
 448
 449 void KeyboardFocusManager::CreateDefaultFocusIndicatorActor()
 450 {
 451   // Create a focus indicator actor shared by all the keyboard focusable actors
 452   Image borderImage = Image::New(FOCUS_BORDER_IMAGE_PATH);
 453
 454   ImageActor focusIndicator = ImageActor::New(borderImage);
 455   focusIndicator.SetPositionInheritanceMode( Dali::USE_PARENT_POSITION_PLUS_LOCAL_POSITION );
 456   focusIndicator.SetStyle( ImageActor::STYLE_NINE_PATCH );
 457   focusIndicator.SetNinePatchBorder(FOCUS_BORDER_IMAGE_BORDER);
 458   focusIndicator.SetPosition(Vector3(0.0f, 0.0f, 1.0f));
 459
 460   // Apply size constraint to the focus indicator
 461   Constraint constraint = Constraint::New<Vector3>(Actor::SIZE,
 462                                                    ParentSource(Actor::SIZE),
 463                                                    EqualToConstraint());
 464   focusIndicator.ApplyConstraint(constraint);
 465
 466   SetFocusIndicatorActor(focusIndicator);
 467 }
 468
 469 void KeyboardFocusManager::OnPhysicalKeyboardStatusChanged(PhysicalKeyboard keyboard)
 470 {
 471   mIsKeyboardFocusEnabled = keyboard.IsAttached();
 472
 473   if(mIsKeyboardFocusEnabled)
 474   {
 475     // Show indicator when keyboard focus turned on if there is focused actor.
 476     Actor actor = GetCurrentFocusActor();
 477     if(actor)
 478     {
 479       if(mFocusIndicatorActor)
 480       {
 481         actor.Add(mFocusIndicatorActor);
 482       }
 483     }
 484     mIsFocusIndicatorEnabled = true;
 485   }
 486   else
 487   {
 488     // Hide indicator when keyboard focus turned off
 489     Actor actor = GetCurrentFocusActor();
 490     if(actor)
 491     {
 492       actor.Remove(mFocusIndicatorActor);
 493     }
 494     mIsFocusIndicatorEnabled = false;
 495   }
 496 }
 497
 498 void KeyboardFocusManager::OnKeyEvent(const KeyEvent& event)
 499 {
 500   if(!mIsKeyboardFocusEnabled)
 501   {
 502     return;
 503   }
 504
 505   AccessibilityManager accessibilityManager = AccessibilityManager::Get();
 506   bool isAccessibilityEnabled = accessibilityManager.IsEnabled();
 507
 508   Toolkit::FocusManager accessibilityFocusManager = Toolkit::FocusManager::Get();
 509
 510   std::string keyName = event.keyPressedName;
 511
 512   bool isFocusStartableKey = false;
 513
 514   if(event.state == KeyEvent::Down)
 515   {
 516     if (keyName == "Left")
 517     {
 518       if(!isAccessibilityEnabled)
 519       {
 520         if(!mIsFocusIndicatorEnabled)
 521         {
 522           // Show focus indicator
 523           mIsFocusIndicatorEnabled = true;
 524         }
 525         else
 526         {
 527           // Move the focus towards left
 528           MoveFocus(Toolkit::Control::Left);
 529         }
 530
 531         isFocusStartableKey = true;
 532       }
 533       else
 534       {
 535         // Move the accessibility focus backward
 536         accessibilityFocusManager.MoveFocusBackward();
 537       }
 538     }
 539     else if (keyName == "Right")
 540     {
 541       if(!isAccessibilityEnabled)
 542       {
 543         if(!mIsFocusIndicatorEnabled)
 544         {
 545           // Show focus indicator
 546           mIsFocusIndicatorEnabled = true;
 547         }
 548         else
 549         {
 550           // Move the focus towards right
 551           MoveFocus(Toolkit::Control::Right);
 552         }
 553
 554         isFocusStartableKey = true;
 555       }
 556       else
 557       {
 558         // Move the accessibility focus forward
 559         accessibilityFocusManager.MoveFocusForward();
 560       }
 561
 562       isFocusStartableKey = true;
 563     }
 564     else if (keyName == "Up" && !isAccessibilityEnabled)
 565     {
 566       if(!mIsFocusIndicatorEnabled)
 567       {
 568         // Show focus indicator
 569         mIsFocusIndicatorEnabled = true;
 570       }
 571       else
 572       {
 573         // Move the focus towards up
 574         MoveFocus(Toolkit::Control::Up);
 575       }
 576
 577       isFocusStartableKey = true;
 578     }
 579     else if (keyName == "Down" && !isAccessibilityEnabled)
 580     {
 581       if(!mIsFocusIndicatorEnabled)
 582       {
 583         // Show focus indicator
 584         mIsFocusIndicatorEnabled = true;
 585       }
 586       else
 587       {
 588         // Move the focus towards down
 589         MoveFocus(Toolkit::Control::Down);
 590       }
 591
 592       isFocusStartableKey = true;
 593     }
 594     else if (keyName == "Tab" && !isAccessibilityEnabled)
 595     {
 596       if(!mIsFocusIndicatorEnabled)
 597       {
 598         // Show focus indicator
 599         mIsFocusIndicatorEnabled = true;
 600       }
 601       else
 602       {
 603         // "Tab" key changes the focus group in the forward direction and
 604         // "Shift-Tab" key changes it in the backward direction.
 605         DoMoveFocusToNextFocusGroup(!event.IsShiftModifier());
 606       }
 607
 608       isFocusStartableKey = true;
 609     }
 610     else if (keyName == "space" && !isAccessibilityEnabled)
 611     {
 612       if(!mIsFocusIndicatorEnabled)
 613       {
 614         // Show focus indicator
 615         mIsFocusIndicatorEnabled = true;
 616       }
 617
 618       isFocusStartableKey = true;
 619     }
 620     else if (keyName == "" && !isAccessibilityEnabled)
 621     {
 622       // Check the fake key event for evas-plugin case
 623       if(!mIsFocusIndicatorEnabled)
 624       {
 625         // Show focus indicator
 626         mIsFocusIndicatorEnabled = true;
 627       }
 628
 629       isFocusStartableKey = true;
 630     }
 631     else if (keyName == "Backspace" && !isAccessibilityEnabled)
 632     {
 633       // Emit signal to go back to the previous view???
 634     }
 635   }
 636   else if(event.state == KeyEvent::Up)
 637   {
 638     if (keyName == "Return")
 639     {
 640       if(!mIsFocusIndicatorEnabled && !isAccessibilityEnabled)
 641       {
 642         // Show focus indicator
 643         mIsFocusIndicatorEnabled = true;
 644       }
 645       else
 646       {
 647         // Activate the focused actor
 648         Actor actor;
 649         if(!isAccessibilityEnabled)
 650         {
 651           actor = GetCurrentFocusActor();
 652         }
 653         else
 654         {
 655           actor = accessibilityFocusManager.GetCurrentFocusActor();
 656         }
 657
 658         if(actor)
 659         {
 660           DoActivate(actor);
 661         }
 662       }
 663
 664       isFocusStartableKey = true;
 665     }
 666   }
 667
 668   if(isFocusStartableKey && mIsFocusIndicatorEnabled && !isAccessibilityEnabled)
 669   {
 670     Actor actor = GetCurrentFocusActor();
 671     if( !actor )
 672     {
 673       // No actor is focused but keyboard focus is activated by the key press
 674       // Let's try to move the initial focus
 675       MoveFocus(Toolkit::Control::Right);
 676     }
 677     else if(mFocusIndicatorActor)
 678     {
 679       // Make sure the focused actor is highlighted
 680       actor.Add(mFocusIndicatorActor);
 681     }
 682   }
 683 }
 684
 685 void KeyboardFocusManager::OnTouched(const TouchEvent& touchEvent)
 686 {
 687   // Clear the focus when user touch the screen
 688   ClearFocus();
 689 }
 690
 691 Toolkit::KeyboardFocusManager::PreFocusChangeSignalV2& KeyboardFocusManager::PreFocusChangeSignal()
 692 {
 693   return mPreFocusChangeSignalV2;
 694 }
 695
 696 Toolkit::KeyboardFocusManager::FocusChangedSignalV2& KeyboardFocusManager::FocusChangedSignal()
 697 {
 698   return mFocusChangedSignalV2;
 699 }
 700
 701 Toolkit::KeyboardFocusManager::FocusGroupChangedSignalV2& KeyboardFocusManager::FocusGroupChangedSignal()
 702 {
 703   return mFocusGroupChangedSignalV2;
 704 }
 705
 706 Toolkit::KeyboardFocusManager::FocusedActorActivatedSignalV2& KeyboardFocusManager::FocusedActorActivatedSignal()
 707 {
 708   return mFocusedActorActivatedSignalV2;
 709 }
 710
 711 bool KeyboardFocusManager::DoConnectSignal( BaseObject* object, ConnectionTrackerInterface* tracker, const std::string& signalName, FunctorDelegate* functor )
 712 {
 713   Dali::BaseHandle handle( object );
 714
 715   bool connected( true );
 716   KeyboardFocusManager* manager = dynamic_cast<KeyboardFocusManager*>(object);
 717
 718   if( Dali::Toolkit::KeyboardFocusManager::SIGNAL_PRE_FOCUS_CHANGE == signalName )
 719   {
 720     manager->PreFocusChangeSignal().Connect( tracker, functor );
 721   }
 722   if( Dali::Toolkit::KeyboardFocusManager::SIGNAL_FOCUS_CHANGED == signalName )
 723   {
 724     manager->FocusChangedSignal().Connect( tracker, functor );
 725   }
 726   if( Dali::Toolkit::KeyboardFocusManager::SIGNAL_FOCUS_GROUP_CHANGED == signalName )
 727   {
 728     manager->FocusGroupChangedSignal().Connect( tracker, functor );
 729   }
 730   else if( Dali::Toolkit::KeyboardFocusManager::SIGNAL_FOCUSED_ACTOR_ACTIVATED== signalName )
 731   {
 732     manager->FocusedActorActivatedSignal().Connect( tracker, functor );
 733   }
 734   else
 735   {
 736     // signalName does not match any signal
 737     connected = false;
 738   }
 739
 740   return connected;
 741 }
 742
 743 } // namespace Internal
 744
 745 } // namespace Toolkit
 746
 747 } // namespace Dali