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

   1 /*
   2  * Copyright (c) 2016 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 // EXTERNAL INCLUDES
  22 #include <cstring> // for strcmp
  23 #include <dali/public-api/actors/layer.h>
  24 #include <dali/devel-api/adaptor-framework/accessibility-adaptor.h>
  25 #include <dali/devel-api/adaptor-framework/singleton-service.h>
  26 #include <dali/public-api/animation/constraints.h>
  27 #include <dali/public-api/common/stage.h>
  28 #include <dali/public-api/events/key-event.h>
  29 #include <dali/public-api/events/touch-data.h>
  30 #include <dali/public-api/object/type-registry.h>
  31 #include <dali/public-api/object/type-registry-helper.h>
  32 #include <dali/public-api/images/resource-image.h>
  33 #include <dali/integration-api/debug.h>
  34
  35 // INTERNAL INCLUDES
  36 #include <dali-toolkit/public-api/controls/control.h>
  37 #include <dali-toolkit/public-api/controls/control-impl.h>
  38 #include <dali-toolkit/public-api/controls/image-view/image-view.h>
  39 #include <dali-toolkit/public-api/accessibility-manager/accessibility-manager.h>
  40 #include <dali-toolkit/devel-api/focus-manager/keyinput-focus-manager.h>
  41
  42 namespace Dali
  43 {
  44
  45 namespace Toolkit
  46 {
  47
  48 namespace Internal
  49 {
  50
  51 namespace // Unnamed namespace
  52 {
  53
  54 #if defined(DEBUG_ENABLED)
  55 Debug::Filter* gLogFilter = Debug::Filter::New(Debug::NoLogging, false, "LOG_KEYBOARD_FOCUS_MANAGER");
  56 #endif
  57
  58 const char* const IS_FOCUS_GROUP_PROPERTY_NAME = "isKeyboardFocusGroup"; // This property will be replaced by a flag in Control.
  59
  60 const char* const FOCUS_BORDER_IMAGE_PATH = DALI_IMAGE_DIR "keyboard_focus.9.png";
  61
  62 BaseHandle Create()
  63 {
  64   BaseHandle handle = KeyboardFocusManager::Get();
  65
  66   if ( !handle )
  67   {
  68     SingletonService singletonService( SingletonService::Get() );
  69     if ( singletonService )
  70     {
  71       Toolkit::KeyboardFocusManager manager = Toolkit::KeyboardFocusManager( new Internal::KeyboardFocusManager() );
  72       singletonService.Register( typeid( manager ), manager );
  73       handle = manager;
  74     }
  75   }
  76
  77   return handle;
  78 }
  79
  80 DALI_TYPE_REGISTRATION_BEGIN_CREATE( Toolkit::KeyboardFocusManager, Dali::BaseHandle, Create, true )
  81
  82 DALI_SIGNAL_REGISTRATION( Toolkit, KeyboardFocusManager, "keyboardPreFocusChange",           SIGNAL_PRE_FOCUS_CHANGE )
  83 DALI_SIGNAL_REGISTRATION( Toolkit, KeyboardFocusManager, "keyboardFocusChanged",             SIGNAL_FOCUS_CHANGED )
  84 DALI_SIGNAL_REGISTRATION( Toolkit, KeyboardFocusManager, "keyboardFocusGroupChanged",        SIGNAL_FOCUS_GROUP_CHANGED )
  85 DALI_SIGNAL_REGISTRATION( Toolkit, KeyboardFocusManager, "keyboardFocusedActorEnterKey",     SIGNAL_FOCUSED_ACTOR_ENTER_KEY )
  86
  87 DALI_TYPE_REGISTRATION_END()
  88
  89 } // unnamed namespace
  90
  91 Toolkit::KeyboardFocusManager KeyboardFocusManager::Get()
  92 {
  93   Toolkit::KeyboardFocusManager manager;
  94
  95   SingletonService singletonService( SingletonService::Get() );
  96   if ( singletonService )
  97   {
  98     // Check whether the keyboard focus manager is already created
  99     Dali::BaseHandle handle = singletonService.GetSingleton( typeid( Toolkit::KeyboardFocusManager ) );
 100     if(handle)
 101     {
 102       // If so, downcast the handle of singleton to keyboard focus manager
 103       manager = Toolkit::KeyboardFocusManager( dynamic_cast< KeyboardFocusManager* >( handle.GetObjectPtr() ) );
 104     }
 105   }
 106
 107   return manager;
 108 }
 109
 110 KeyboardFocusManager::KeyboardFocusManager()
 111 : mCurrentFocusActor(0),
 112   mFocusIndicatorActor(),
 113   mFocusGroupLoopEnabled(false),
 114   mIsKeyboardFocusEnabled(false),
 115   mIsFocusIndicatorEnabled(false),
 116   mIsWaitingKeyboardFocusChangeCommit(false),
 117   mSlotDelegate(this)
 118 {
 119   OnPhysicalKeyboardStatusChanged(PhysicalKeyboard::Get());
 120
 121   Toolkit::KeyInputFocusManager::Get().UnhandledKeyEventSignal().Connect(mSlotDelegate, &KeyboardFocusManager::OnKeyEvent);
 122   Stage::GetCurrent().TouchSignal().Connect( mSlotDelegate, &KeyboardFocusManager::OnTouch );
 123   PhysicalKeyboard::Get().StatusChangedSignal().Connect(mSlotDelegate, &KeyboardFocusManager::OnPhysicalKeyboardStatusChanged);
 124 }
 125
 126 KeyboardFocusManager::~KeyboardFocusManager()
 127 {
 128 }
 129
 130 bool KeyboardFocusManager::SetCurrentFocusActor( Actor actor )
 131 {
 132   DALI_ASSERT_DEBUG( !mIsWaitingKeyboardFocusChangeCommit && "Calling this function in the PreFocusChangeSignal callback?" );
 133
 134   if( actor )
 135   {
 136     return DoSetCurrentFocusActor( actor.GetId() );
 137   }
 138
 139   return false;
 140 }
 141
 142 bool KeyboardFocusManager::DoSetCurrentFocusActor( const unsigned int actorID )
 143 {
 144   Actor rootActor = Stage::GetCurrent().GetRootLayer();
 145   Actor actor = rootActor.FindChildById( actorID );
 146   bool success = false;
 147
 148   // Check whether the actor is in the stage and is keyboard focusable.
 149   if( actor && actor.IsKeyboardFocusable() )
 150   {
 151     mIsFocusIndicatorEnabled = true;
 152     // Draw the focus indicator upon the focused actor when PhysicalKeyboard is attached
 153     if( mIsKeyboardFocusEnabled )
 154     {
 155       actor.Add( GetFocusIndicatorActor() );
 156     }
 157     // Send notification for the change of focus actor
 158     if( !mFocusChangedSignal.Empty() )
 159     {
 160       mFocusChangedSignal.Emit(GetCurrentFocusActor(), actor);
 161     }
 162
 163     DALI_LOG_INFO( gLogFilter, Debug::General, "[%s:%d] Focus Changed\n", __FUNCTION__, __LINE__);
 164
 165     // Save the current focused actor
 166     mCurrentFocusActor = actorID;
 167
 168     DALI_LOG_INFO( gLogFilter, Debug::General, "[%s:%d] SUCCEED\n", __FUNCTION__, __LINE__);
 169     success = true;
 170   }
 171   else
 172   {
 173     DALI_LOG_WARNING("[%s:%d] FAILED\n", __FUNCTION__, __LINE__);
 174   }
 175
 176   return success;
 177 }
 178
 179 Actor KeyboardFocusManager::GetCurrentFocusActor()
 180 {
 181   Actor rootActor = Stage::GetCurrent().GetRootLayer();
 182   return rootActor.FindChildById(mCurrentFocusActor);
 183 }
 184
 185 Actor KeyboardFocusManager::GetCurrentFocusGroup()
 186 {
 187   return GetFocusGroup(GetCurrentFocusActor());
 188 }
 189
 190 bool KeyboardFocusManager::IsLayoutControl(Actor actor) const
 191 {
 192   Toolkit::Control control = Toolkit::Control::DownCast(actor);
 193   return control && GetImplementation( control ).IsKeyboardNavigationSupported();
 194 }
 195
 196 Toolkit::Control KeyboardFocusManager::GetParentLayoutControl(Actor actor) const
 197 {
 198   // Get the actor's parent layout control that supports two dimensional keyboard navigation
 199   Actor rootActor = Stage::GetCurrent().GetRootLayer();
 200   Actor parent;
 201   if(actor)
 202   {
 203     parent = actor.GetParent();
 204   }
 205
 206   while( parent && !IsLayoutControl(parent) && parent != rootActor )
 207   {
 208     parent = parent.GetParent();
 209   }
 210
 211   return Toolkit::Control::DownCast(parent);
 212 }
 213
 214 bool KeyboardFocusManager::MoveFocus(Toolkit::Control::KeyboardFocus::Direction direction)
 215 {
 216   Actor currentFocusActor = GetCurrentFocusActor();
 217
 218   bool succeed = false;
 219
 220   // Go through the actor's hierarchy until we find a layout control that knows how to move the focus
 221   Toolkit::Control parentLayoutControl = GetParentLayoutControl(currentFocusActor);
 222   while(parentLayoutControl && !succeed)
 223   {
 224     succeed = DoMoveFocusWithinLayoutControl(parentLayoutControl, currentFocusActor, direction);
 225     parentLayoutControl = GetParentLayoutControl(parentLayoutControl);
 226   }
 227
 228   if(!succeed && !mPreFocusChangeSignal.Empty())
 229   {
 230     // Don't know how to move the focus further. The application needs to tell us which actor to move the focus to
 231     mIsWaitingKeyboardFocusChangeCommit = true;
 232     Actor nextFocusableActor = mPreFocusChangeSignal.Emit(currentFocusActor, Actor(), direction);
 233     mIsWaitingKeyboardFocusChangeCommit = false;
 234
 235     if ( nextFocusableActor && nextFocusableActor.IsKeyboardFocusable() )
 236     {
 237       // Whether the next focusable actor is a layout control
 238       if(IsLayoutControl(nextFocusableActor))
 239       {
 240         // If so, move the focus inside it.
 241         Toolkit::Control layoutControl = Toolkit::Control::DownCast(nextFocusableActor);
 242         succeed = DoMoveFocusWithinLayoutControl(layoutControl, currentFocusActor, direction);
 243       }
 244       else
 245       {
 246         // Otherwise, just set focus to the next focusable actor
 247         succeed = SetCurrentFocusActor(nextFocusableActor);
 248       }
 249     }
 250   }
 251
 252   return succeed;
 253 }
 254
 255 bool KeyboardFocusManager::DoMoveFocusWithinLayoutControl(Toolkit::Control control, Actor actor, Toolkit::Control::KeyboardFocus::Direction direction)
 256 {
 257   // Ask the control for the next actor to focus
 258   Actor nextFocusableActor = GetImplementation( control ).GetNextKeyboardFocusableActor(actor, direction, mFocusGroupLoopEnabled);
 259   if(nextFocusableActor)
 260   {
 261     if(!nextFocusableActor.IsKeyboardFocusable())
 262     {
 263       // If the actor is not focusable, ask the same layout control for the next actor to focus
 264       return DoMoveFocusWithinLayoutControl(control, nextFocusableActor, direction);
 265     }
 266     else
 267     {
 268       Actor currentFocusActor = GetCurrentFocusActor();
 269       Actor committedFocusActor = nextFocusableActor;
 270
 271       // We will try to move the focus to the actor. Emit a signal to notify the proposed actor to focus
 272       // Signal handler can check the proposed actor and return a different actor if it wishes.
 273       if( !mPreFocusChangeSignal.Empty() )
 274       {
 275         mIsWaitingKeyboardFocusChangeCommit = true;
 276         committedFocusActor = mPreFocusChangeSignal.Emit(currentFocusActor, nextFocusableActor, direction);
 277         mIsWaitingKeyboardFocusChangeCommit = false;
 278       }
 279
 280       if (committedFocusActor && committedFocusActor.IsKeyboardFocusable())
 281       {
 282         // Whether the commited focusable actor is a layout control
 283         if(IsLayoutControl(committedFocusActor))
 284         {
 285           // If so, move the focus inside it.
 286           Toolkit::Control layoutControl = Toolkit::Control::DownCast(committedFocusActor);
 287           return DoMoveFocusWithinLayoutControl(layoutControl, currentFocusActor, direction);
 288         }
 289         else
 290         {
 291           // Otherwise, just set focus to the next focusable actor
 292           if(committedFocusActor == nextFocusableActor)
 293           {
 294             // If the application hasn't changed our proposed actor, we informs the layout control we will
 295             // move the focus to what the control returns. The control might wish to perform some actions
 296             // before the focus is actually moved.
 297             GetImplementation( control ).OnKeyboardFocusChangeCommitted( committedFocusActor );
 298           }
 299
 300           return SetCurrentFocusActor(committedFocusActor);
 301         }
 302       }
 303       else
 304       {
 305         return false;
 306       }
 307     }
 308   }
 309   else
 310   {
 311     // No more actor can be focused in the given direction within the same layout control.
 312     return false;
 313   }
 314 }
 315
 316 bool KeyboardFocusManager::DoMoveFocusToNextFocusGroup(bool forward)
 317 {
 318   bool succeed = false;
 319
 320   // Get the parent layout control of the current focus group
 321   Toolkit::Control parentLayoutControl = GetParentLayoutControl(GetCurrentFocusGroup());
 322
 323   while(parentLayoutControl && !succeed)
 324   {
 325     // If the current focus group has a parent layout control, we can probably automatically
 326     // move the focus to the next focus group in the forward or backward direction.
 327     Toolkit::Control::KeyboardFocus::Direction direction = forward ? Toolkit::Control::KeyboardFocus::RIGHT : Toolkit::Control::KeyboardFocus::LEFT;
 328     succeed = DoMoveFocusWithinLayoutControl(parentLayoutControl, GetCurrentFocusActor(), direction);
 329     parentLayoutControl = GetParentLayoutControl(parentLayoutControl);
 330   }
 331
 332   if(!mFocusGroupChangedSignal.Empty())
 333   {
 334     // Emit a focus group changed signal. The applicaton can move the focus to a new focus group
 335     mFocusGroupChangedSignal.Emit(GetCurrentFocusActor(), forward);
 336   }
 337
 338   return succeed;
 339 }
 340
 341 void KeyboardFocusManager::DoKeyboardEnter(Actor actor)
 342 {
 343   if( actor )
 344   {
 345     Toolkit::Control control = Toolkit::Control::DownCast( actor );
 346     if( control )
 347     {
 348       // Notify the control that enter has been pressed on it.
 349       GetImplementation( control ).KeyboardEnter();
 350     }
 351
 352     // Send a notification for the actor.
 353     if( !mFocusedActorEnterKeySignal.Empty() )
 354     {
 355       mFocusedActorEnterKeySignal.Emit( actor );
 356     }
 357   }
 358 }
 359
 360 void KeyboardFocusManager::ClearFocus()
 361 {
 362   Actor actor = GetCurrentFocusActor();
 363   if(actor)
 364   {
 365     if(mFocusIndicatorActor)
 366     {
 367       actor.Remove(mFocusIndicatorActor);
 368     }
 369
 370     // Send notification for the change of focus actor
 371     if( !mFocusChangedSignal.Empty() )
 372     {
 373       mFocusChangedSignal.Emit(actor, Actor());
 374     }
 375   }
 376
 377   mCurrentFocusActor = 0;
 378   mIsFocusIndicatorEnabled = false;
 379 }
 380
 381 void KeyboardFocusManager::SetFocusGroupLoop(bool enabled)
 382 {
 383   mFocusGroupLoopEnabled = enabled;
 384 }
 385
 386 bool KeyboardFocusManager::GetFocusGroupLoop() const
 387 {
 388   return mFocusGroupLoopEnabled;
 389 }
 390
 391 void KeyboardFocusManager::SetAsFocusGroup(Actor actor, bool isFocusGroup)
 392 {
 393   if(actor)
 394   {
 395     // Create/Set focus group property.
 396     actor.RegisterProperty( IS_FOCUS_GROUP_PROPERTY_NAME, isFocusGroup, Property::READ_WRITE );
 397   }
 398 }
 399
 400 bool KeyboardFocusManager::IsFocusGroup(Actor actor) const
 401 {
 402   // Check whether the actor is a focus group
 403   bool isFocusGroup = false;
 404
 405   if(actor)
 406   {
 407     Property::Index propertyIsFocusGroup = actor.GetPropertyIndex(IS_FOCUS_GROUP_PROPERTY_NAME);
 408     if(propertyIsFocusGroup != Property::INVALID_INDEX)
 409     {
 410       isFocusGroup = actor.GetProperty<bool>(propertyIsFocusGroup);
 411     }
 412   }
 413
 414   return isFocusGroup;
 415 }
 416
 417 Actor KeyboardFocusManager::GetFocusGroup(Actor actor)
 418 {
 419   // Go through the actor's hierarchy to check which focus group the actor belongs to
 420   while (actor && !IsFocusGroup(actor))
 421   {
 422     actor = actor.GetParent();
 423   }
 424
 425   return actor;
 426 }
 427
 428 void KeyboardFocusManager::SetFocusIndicatorActor(Actor indicator)
 429 {
 430   if(mFocusIndicatorActor != indicator)
 431   {
 432     Actor currentFocusActor = GetCurrentFocusActor();
 433     if(currentFocusActor)
 434     {
 435       // The new focus indicator should be added to the current focused actor immediately
 436       if(mFocusIndicatorActor)
 437       {
 438         currentFocusActor.Remove(mFocusIndicatorActor);
 439       }
 440
 441       if(indicator)
 442       {
 443         currentFocusActor.Add(indicator);
 444       }
 445     }
 446
 447     mFocusIndicatorActor = indicator;
 448   }
 449 }
 450
 451 Actor KeyboardFocusManager::GetFocusIndicatorActor()
 452 {
 453   if( ! mFocusIndicatorActor )
 454   {
 455     // Create the default if it hasn't been set and one that's shared by all the keyboard focusable actors
 456     mFocusIndicatorActor = Toolkit::ImageView::New( FOCUS_BORDER_IMAGE_PATH );
 457     mFocusIndicatorActor.SetParentOrigin( ParentOrigin::CENTER );
 458
 459     // Apply size constraint to the focus indicator
 460     mFocusIndicatorActor.SetResizePolicy( ResizePolicy::FILL_TO_PARENT, Dimension::ALL_DIMENSIONS );
 461   }
 462
 463   return mFocusIndicatorActor;
 464 }
 465
 466 void KeyboardFocusManager::OnPhysicalKeyboardStatusChanged(PhysicalKeyboard keyboard)
 467 {
 468   mIsKeyboardFocusEnabled = keyboard.IsAttached();
 469
 470   if(mIsKeyboardFocusEnabled)
 471   {
 472     // Show indicator when keyboard focus turned on if there is focused actor.
 473     Actor actor = GetCurrentFocusActor();
 474     if(actor)
 475     {
 476       actor.Add( GetFocusIndicatorActor() );
 477     }
 478     mIsFocusIndicatorEnabled = true;
 479   }
 480   else
 481   {
 482     // Hide indicator when keyboard focus turned off
 483     Actor actor = GetCurrentFocusActor();
 484     if( actor && mFocusIndicatorActor )
 485     {
 486       actor.Remove( mFocusIndicatorActor );
 487     }
 488     mIsFocusIndicatorEnabled = false;
 489   }
 490 }
 491
 492 void KeyboardFocusManager::OnKeyEvent(const KeyEvent& event)
 493 {
 494   if(!mIsKeyboardFocusEnabled)
 495   {
 496     return;
 497   }
 498
 499   AccessibilityAdaptor accessibilityAdaptor = AccessibilityAdaptor::Get();
 500   bool isAccessibilityEnabled = accessibilityAdaptor.IsEnabled();
 501
 502   Toolkit::AccessibilityManager accessibilityManager = Toolkit::AccessibilityManager::Get();
 503
 504   std::string keyName = event.keyPressedName;
 505
 506   bool isFocusStartableKey = false;
 507
 508   if(event.state == KeyEvent::Down)
 509   {
 510     if (keyName == "Left")
 511     {
 512       if(!isAccessibilityEnabled)
 513       {
 514         if(!mIsFocusIndicatorEnabled)
 515         {
 516           // Show focus indicator
 517           mIsFocusIndicatorEnabled = true;
 518         }
 519         else
 520         {
 521           // Move the focus towards left
 522           MoveFocus(Toolkit::Control::KeyboardFocus::LEFT);
 523         }
 524
 525         isFocusStartableKey = true;
 526       }
 527       else
 528       {
 529         // Move the accessibility focus backward
 530         accessibilityManager.MoveFocusBackward();
 531       }
 532     }
 533     else if (keyName == "Right")
 534     {
 535       if(!isAccessibilityEnabled)
 536       {
 537         if(!mIsFocusIndicatorEnabled)
 538         {
 539           // Show focus indicator
 540           mIsFocusIndicatorEnabled = true;
 541         }
 542         else
 543         {
 544           // Move the focus towards right
 545           MoveFocus(Toolkit::Control::KeyboardFocus::RIGHT);
 546         }
 547       }
 548       else
 549       {
 550         // Move the accessibility focus forward
 551         accessibilityManager.MoveFocusForward();
 552       }
 553
 554       isFocusStartableKey = true;
 555     }
 556     else if (keyName == "Up" && !isAccessibilityEnabled)
 557     {
 558       if(!mIsFocusIndicatorEnabled)
 559       {
 560         // Show focus indicator
 561         mIsFocusIndicatorEnabled = true;
 562       }
 563       else
 564       {
 565         // Move the focus towards up
 566         MoveFocus(Toolkit::Control::KeyboardFocus::UP);
 567       }
 568
 569       isFocusStartableKey = true;
 570     }
 571     else if (keyName == "Down" && !isAccessibilityEnabled)
 572     {
 573       if(!mIsFocusIndicatorEnabled)
 574       {
 575         // Show focus indicator
 576         mIsFocusIndicatorEnabled = true;
 577       }
 578       else
 579       {
 580         // Move the focus towards down
 581         MoveFocus(Toolkit::Control::KeyboardFocus::DOWN);
 582       }
 583
 584       isFocusStartableKey = true;
 585     }
 586     else if (keyName == "Tab" && !isAccessibilityEnabled)
 587     {
 588       if(!mIsFocusIndicatorEnabled)
 589       {
 590         // Show focus indicator
 591         mIsFocusIndicatorEnabled = true;
 592       }
 593       else
 594       {
 595         // "Tab" key changes the focus group in the forward direction and
 596         // "Shift-Tab" key changes it in the backward direction.
 597         DoMoveFocusToNextFocusGroup(!event.IsShiftModifier());
 598       }
 599
 600       isFocusStartableKey = true;
 601     }
 602     else if (keyName == "space" && !isAccessibilityEnabled)
 603     {
 604       if(!mIsFocusIndicatorEnabled)
 605       {
 606         // Show focus indicator
 607         mIsFocusIndicatorEnabled = true;
 608       }
 609
 610       isFocusStartableKey = true;
 611     }
 612     else if (keyName == "" && !isAccessibilityEnabled)
 613     {
 614       // Check the fake key event for evas-plugin case
 615       if(!mIsFocusIndicatorEnabled)
 616       {
 617         // Show focus indicator
 618         mIsFocusIndicatorEnabled = true;
 619       }
 620
 621       isFocusStartableKey = true;
 622     }
 623     else if (keyName == "Backspace" && !isAccessibilityEnabled)
 624     {
 625       // Emit signal to go back to the previous view???
 626     }
 627   }
 628   else if(event.state == KeyEvent::Up)
 629   {
 630     if (keyName == "Return")
 631     {
 632       if(!mIsFocusIndicatorEnabled && !isAccessibilityEnabled)
 633       {
 634         // Show focus indicator
 635         mIsFocusIndicatorEnabled = true;
 636       }
 637       else
 638       {
 639         // The focused actor has enter pressed on it
 640         Actor actor;
 641         if( !isAccessibilityEnabled )
 642         {
 643           actor = GetCurrentFocusActor();
 644         }
 645         else
 646         {
 647           actor = accessibilityManager.GetCurrentFocusActor();
 648         }
 649
 650         if( actor )
 651         {
 652           DoKeyboardEnter( actor );
 653         }
 654       }
 655
 656       isFocusStartableKey = true;
 657     }
 658   }
 659
 660   if(isFocusStartableKey && mIsFocusIndicatorEnabled && !isAccessibilityEnabled)
 661   {
 662     Actor actor = GetCurrentFocusActor();
 663     if( actor )
 664     {
 665       // Make sure the focused actor is highlighted
 666       actor.Add( GetFocusIndicatorActor() );
 667     }
 668     else
 669     {
 670       // No actor is focused but keyboard focus is activated by the key press
 671       // Let's try to move the initial focus
 672       MoveFocus(Toolkit::Control::KeyboardFocus::RIGHT);
 673     }
 674   }
 675 }
 676
 677 void KeyboardFocusManager::OnTouch(const TouchData& touch)
 678 {
 679   // Clear the focus when user touch the screen.
 680   // We only do this on a Down event, otherwise the clear action may override a manually focused actor.
 681   if( ( touch.GetPointCount() < 1 ) || ( touch.GetState( 0 ) == PointState::DOWN ) )
 682   {
 683     ClearFocus();
 684   }
 685 }
 686
 687 Toolkit::KeyboardFocusManager::PreFocusChangeSignalType& KeyboardFocusManager::PreFocusChangeSignal()
 688 {
 689   return mPreFocusChangeSignal;
 690 }
 691
 692 Toolkit::KeyboardFocusManager::FocusChangedSignalType& KeyboardFocusManager::FocusChangedSignal()
 693 {
 694   return mFocusChangedSignal;
 695 }
 696
 697 Toolkit::KeyboardFocusManager::FocusGroupChangedSignalType& KeyboardFocusManager::FocusGroupChangedSignal()
 698 {
 699   return mFocusGroupChangedSignal;
 700 }
 701
 702 Toolkit::KeyboardFocusManager::FocusedActorEnterKeySignalType& KeyboardFocusManager::FocusedActorEnterKeySignal()
 703 {
 704   return mFocusedActorEnterKeySignal;
 705 }
 706
 707 bool KeyboardFocusManager::DoConnectSignal( BaseObject* object, ConnectionTrackerInterface* tracker, const std::string& signalName, FunctorDelegate* functor )
 708 {
 709   Dali::BaseHandle handle( object );
 710
 711   bool connected( true );
 712   KeyboardFocusManager* manager = static_cast< KeyboardFocusManager* >( object ); // TypeRegistry guarantees that this is the correct type.
 713
 714   if( 0 == strcmp( signalName.c_str(), SIGNAL_PRE_FOCUS_CHANGE ) )
 715   {
 716     manager->PreFocusChangeSignal().Connect( tracker, functor );
 717   }
 718   else if( 0 == strcmp( signalName.c_str(), SIGNAL_FOCUS_CHANGED ) )
 719   {
 720     manager->FocusChangedSignal().Connect( tracker, functor );
 721   }
 722   else if( 0 == strcmp( signalName.c_str(), SIGNAL_FOCUS_GROUP_CHANGED ) )
 723   {
 724     manager->FocusGroupChangedSignal().Connect( tracker, functor );
 725   }
 726   else if( 0 == strcmp( signalName.c_str(), SIGNAL_FOCUSED_ACTOR_ENTER_KEY ) )
 727   {
 728     manager->FocusedActorEnterKeySignal().Connect( tracker, functor );
 729   }
 730   else
 731   {
 732     // signalName does not match any signal
 733     connected = false;
 734   }
 735
 736   return connected;
 737 }
 738
 739 } // namespace Internal
 740
 741 } // namespace Toolkit
 742
 743 } // namespace Dali