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