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 // 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(Actor()),
 113   mFocusGroupLoopEnabled(false),
 114   mIsKeyboardFocusEnabled(false),
 115   mIsFocusIndicatorEnabled(false),
 116   mIsWaitingKeyboardFocusChangeCommit(false),
 117   mSlotDelegate(this)
 118 {
 119   CreateDefaultFocusIndicatorActor();
 120
 121   OnPhysicalKeyboardStatusChanged(PhysicalKeyboard::Get());
 122
 123   Toolkit::KeyInputFocusManager::Get().UnhandledKeyEventSignal().Connect(mSlotDelegate, &KeyboardFocusManager::OnKeyEvent);
 124   Stage::GetCurrent().TouchSignal().Connect( mSlotDelegate, &KeyboardFocusManager::OnTouch );
 125   PhysicalKeyboard::Get().StatusChangedSignal().Connect(mSlotDelegate, &KeyboardFocusManager::OnPhysicalKeyboardStatusChanged);
 126 }
 127
 128 KeyboardFocusManager::~KeyboardFocusManager()
 129 {
 130 }
 131
 132 bool KeyboardFocusManager::SetCurrentFocusActor( Actor actor )
 133 {
 134   DALI_ASSERT_DEBUG( !mIsWaitingKeyboardFocusChangeCommit && "Calling this function in the PreFocusChangeSignal callback?" );
 135
 136   if( actor )
 137   {
 138     return DoSetCurrentFocusActor( actor.GetId() );
 139   }
 140
 141   return false;
 142 }
 143
 144 bool KeyboardFocusManager::DoSetCurrentFocusActor( const unsigned int actorID )
 145 {
 146   Actor rootActor = Stage::GetCurrent().GetRootLayer();
 147   Actor actor = rootActor.FindChildById( actorID );
 148   bool success = false;
 149
 150   // Check whether the actor is in the stage and is keyboard focusable.
 151   if( actor && actor.IsKeyboardFocusable() )
 152   {
 153     mIsFocusIndicatorEnabled = true;
 154     // Draw the focus indicator upon the focused actor
 155     if( mFocusIndicatorActor )
 156     {
 157       actor.Add( mFocusIndicatorActor );
 158     }
 159
 160     // Send notification for the change of focus actor
 161     if( !mFocusChangedSignal.Empty() )
 162     {
 163       mFocusChangedSignal.Emit(GetCurrentFocusActor(), actor);
 164     }
 165
 166     DALI_LOG_INFO( gLogFilter, Debug::General, "[%s:%d] Focus Changed\n", __FUNCTION__, __LINE__);
 167
 168     // Save the current focused actor
 169     mCurrentFocusActor = actorID;
 170
 171     DALI_LOG_INFO( gLogFilter, Debug::General, "[%s:%d] SUCCEED\n", __FUNCTION__, __LINE__);
 172     success = true;
 173   }
 174   else
 175   {
 176     DALI_LOG_WARNING("[%s:%d] FAILED\n", __FUNCTION__, __LINE__);
 177   }
 178
 179   return success;
 180 }
 181
 182 Actor KeyboardFocusManager::GetCurrentFocusActor()
 183 {
 184   Actor rootActor = Stage::GetCurrent().GetRootLayer();
 185   return rootActor.FindChildById(mCurrentFocusActor);
 186 }
 187
 188 Actor KeyboardFocusManager::GetCurrentFocusGroup()
 189 {
 190   return GetFocusGroup(GetCurrentFocusActor());
 191 }
 192
 193 bool KeyboardFocusManager::IsLayoutControl(Actor actor) const
 194 {
 195   Toolkit::Control control = Toolkit::Control::DownCast(actor);
 196   return control && GetImplementation( control ).IsKeyboardNavigationSupported();
 197 }
 198
 199 Toolkit::Control KeyboardFocusManager::GetParentLayoutControl(Actor actor) const
 200 {
 201   // Get the actor's parent layout control that supports two dimensional keyboard navigation
 202   Actor rootActor = Stage::GetCurrent().GetRootLayer();
 203   Actor parent;
 204   if(actor)
 205   {
 206     parent = actor.GetParent();
 207   }
 208
 209   while( parent && !IsLayoutControl(parent) && parent != rootActor )
 210   {
 211     parent = parent.GetParent();
 212   }
 213
 214   return Toolkit::Control::DownCast(parent);
 215 }
 216
 217 bool KeyboardFocusManager::MoveFocus(Toolkit::Control::KeyboardFocus::Direction direction)
 218 {
 219   Actor currentFocusActor = GetCurrentFocusActor();
 220
 221   bool succeed = false;
 222
 223   // Go through the actor's hierarchy until we find a layout control that knows how to move the focus
 224   Toolkit::Control parentLayoutControl = GetParentLayoutControl(currentFocusActor);
 225   while(parentLayoutControl && !succeed)
 226   {
 227     succeed = DoMoveFocusWithinLayoutControl(parentLayoutControl, currentFocusActor, direction);
 228     parentLayoutControl = GetParentLayoutControl(parentLayoutControl);
 229   }
 230
 231   if(!succeed && !mPreFocusChangeSignal.Empty())
 232   {
 233     // Don't know how to move the focus further. The application needs to tell us which actor to move the focus to
 234     mIsWaitingKeyboardFocusChangeCommit = true;
 235     Actor nextFocusableActor = mPreFocusChangeSignal.Emit(currentFocusActor, Actor(), direction);
 236     mIsWaitingKeyboardFocusChangeCommit = false;
 237
 238     if ( nextFocusableActor && nextFocusableActor.IsKeyboardFocusable() )
 239     {
 240       // Whether the next focusable actor is a layout control
 241       if(IsLayoutControl(nextFocusableActor))
 242       {
 243         // If so, move the focus inside it.
 244         Toolkit::Control layoutControl = Toolkit::Control::DownCast(nextFocusableActor);
 245         succeed = DoMoveFocusWithinLayoutControl(layoutControl, currentFocusActor, direction);
 246       }
 247       else
 248       {
 249         // Otherwise, just set focus to the next focusable actor
 250         succeed = SetCurrentFocusActor(nextFocusableActor);
 251       }
 252     }
 253   }
 254
 255   return succeed;
 256 }
 257
 258 bool KeyboardFocusManager::DoMoveFocusWithinLayoutControl(Toolkit::Control control, Actor actor, Toolkit::Control::KeyboardFocus::Direction direction)
 259 {
 260   // Ask the control for the next actor to focus
 261   Actor nextFocusableActor = GetImplementation( control ).GetNextKeyboardFocusableActor(actor, direction, mFocusGroupLoopEnabled);
 262   if(nextFocusableActor)
 263   {
 264     if(!nextFocusableActor.IsKeyboardFocusable())
 265     {
 266       // If the actor is not focusable, ask the same layout control for the next actor to focus
 267       return DoMoveFocusWithinLayoutControl(control, nextFocusableActor, direction);
 268     }
 269     else
 270     {
 271       Actor currentFocusActor = GetCurrentFocusActor();
 272       Actor committedFocusActor = nextFocusableActor;
 273
 274       // We will try to move the focus to the actor. Emit a signal to notify the proposed actor to focus
 275       // Signal handler can check the proposed actor and return a different actor if it wishes.
 276       if( !mPreFocusChangeSignal.Empty() )
 277       {
 278         mIsWaitingKeyboardFocusChangeCommit = true;
 279         committedFocusActor = mPreFocusChangeSignal.Emit(currentFocusActor, nextFocusableActor, direction);
 280         mIsWaitingKeyboardFocusChangeCommit = false;
 281       }
 282
 283       if (committedFocusActor && committedFocusActor.IsKeyboardFocusable())
 284       {
 285         // Whether the commited focusable actor is a layout control
 286         if(IsLayoutControl(committedFocusActor))
 287         {
 288           // If so, move the focus inside it.
 289           Toolkit::Control layoutControl = Toolkit::Control::DownCast(committedFocusActor);
 290           return DoMoveFocusWithinLayoutControl(layoutControl, currentFocusActor, direction);
 291         }
 292         else
 293         {
 294           // Otherwise, just set focus to the next focusable actor
 295           if(committedFocusActor == nextFocusableActor)
 296           {
 297             // If the application hasn't changed our proposed actor, we informs the layout control we will
 298             // move the focus to what the control returns. The control might wish to perform some actions
 299             // before the focus is actually moved.
 300             GetImplementation( control ).OnKeyboardFocusChangeCommitted( committedFocusActor );
 301           }
 302
 303           return SetCurrentFocusActor(committedFocusActor);
 304         }
 305       }
 306       else
 307       {
 308         return false;
 309       }
 310     }
 311   }
 312   else
 313   {
 314     // No more actor can be focused in the given direction within the same layout control.
 315     return false;
 316   }
 317 }
 318
 319 bool KeyboardFocusManager::DoMoveFocusToNextFocusGroup(bool forward)
 320 {
 321   bool succeed = false;
 322
 323   // Get the parent layout control of the current focus group
 324   Toolkit::Control parentLayoutControl = GetParentLayoutControl(GetCurrentFocusGroup());
 325
 326   while(parentLayoutControl && !succeed)
 327   {
 328     // If the current focus group has a parent layout control, we can probably automatically
 329     // move the focus to the next focus group in the forward or backward direction.
 330     Toolkit::Control::KeyboardFocus::Direction direction = forward ? Toolkit::Control::KeyboardFocus::RIGHT : Toolkit::Control::KeyboardFocus::LEFT;
 331     succeed = DoMoveFocusWithinLayoutControl(parentLayoutControl, GetCurrentFocusActor(), direction);
 332     parentLayoutControl = GetParentLayoutControl(parentLayoutControl);
 333   }
 334
 335   if(!mFocusGroupChangedSignal.Empty())
 336   {
 337     // Emit a focus group changed signal. The applicaton can move the focus to a new focus group
 338     mFocusGroupChangedSignal.Emit(GetCurrentFocusActor(), forward);
 339   }
 340
 341   return succeed;
 342 }
 343
 344 void KeyboardFocusManager::DoKeyboardEnter(Actor actor)
 345 {
 346   if( actor )
 347   {
 348     Toolkit::Control control = Toolkit::Control::DownCast( actor );
 349     if( control )
 350     {
 351       // Notify the control that enter has been pressed on it.
 352       GetImplementation( control ).KeyboardEnter();
 353     }
 354
 355     // Send a notification for the actor.
 356     if( !mFocusedActorEnterKeySignal.Empty() )
 357     {
 358       mFocusedActorEnterKeySignal.Emit( actor );
 359     }
 360   }
 361 }
 362
 363 void KeyboardFocusManager::ClearFocus()
 364 {
 365   Actor actor = GetCurrentFocusActor();
 366   if(actor)
 367   {
 368     if(mFocusIndicatorActor)
 369     {
 370       actor.Remove(mFocusIndicatorActor);
 371     }
 372
 373     // Send notification for the change of focus actor
 374     if( !mFocusChangedSignal.Empty() )
 375     {
 376       mFocusChangedSignal.Emit(actor, Actor());
 377     }
 378   }
 379
 380   mCurrentFocusActor = 0;
 381   mIsFocusIndicatorEnabled = false;
 382 }
 383
 384 void KeyboardFocusManager::SetFocusGroupLoop(bool enabled)
 385 {
 386   mFocusGroupLoopEnabled = enabled;
 387 }
 388
 389 bool KeyboardFocusManager::GetFocusGroupLoop() const
 390 {
 391   return mFocusGroupLoopEnabled;
 392 }
 393
 394 void KeyboardFocusManager::SetAsFocusGroup(Actor actor, bool isFocusGroup)
 395 {
 396   if(actor)
 397   {
 398     // Create/Set focus group property.
 399     actor.RegisterProperty( IS_FOCUS_GROUP_PROPERTY_NAME, isFocusGroup, Property::READ_WRITE );
 400   }
 401 }
 402
 403 bool KeyboardFocusManager::IsFocusGroup(Actor actor) const
 404 {
 405   // Check whether the actor is a focus group
 406   bool isFocusGroup = false;
 407
 408   if(actor)
 409   {
 410     Property::Index propertyIsFocusGroup = actor.GetPropertyIndex(IS_FOCUS_GROUP_PROPERTY_NAME);
 411     if(propertyIsFocusGroup != Property::INVALID_INDEX)
 412     {
 413       isFocusGroup = actor.GetProperty<bool>(propertyIsFocusGroup);
 414     }
 415   }
 416
 417   return isFocusGroup;
 418 }
 419
 420 Actor KeyboardFocusManager::GetFocusGroup(Actor actor)
 421 {
 422   // Go through the actor's hierarchy to check which focus group the actor belongs to
 423   while (actor && !IsFocusGroup(actor))
 424   {
 425     actor = actor.GetParent();
 426   }
 427
 428   return actor;
 429 }
 430
 431 void KeyboardFocusManager::SetFocusIndicatorActor(Actor indicator)
 432 {
 433   if(mFocusIndicatorActor != indicator)
 434   {
 435     Actor currentFocusActor = GetCurrentFocusActor();
 436     if(currentFocusActor)
 437     {
 438       // The new focus indicator should be added to the current focused actor immediately
 439       if(mFocusIndicatorActor)
 440       {
 441         currentFocusActor.Remove(mFocusIndicatorActor);
 442       }
 443
 444       if(indicator)
 445       {
 446         currentFocusActor.Add(indicator);
 447       }
 448     }
 449
 450     mFocusIndicatorActor = indicator;
 451   }
 452 }
 453
 454 Actor KeyboardFocusManager::GetFocusIndicatorActor()
 455 {
 456   return mFocusIndicatorActor;
 457 }
 458
 459 void KeyboardFocusManager::CreateDefaultFocusIndicatorActor()
 460 {
 461   // Create a focus indicator actor shared by all the keyboard focusable actors
 462   Toolkit::ImageView focusIndicator = Toolkit::ImageView::New(FOCUS_BORDER_IMAGE_PATH);
 463   focusIndicator.SetParentOrigin( ParentOrigin::CENTER );
 464
 465   // Apply size constraint to the focus indicator
 466   focusIndicator.SetResizePolicy( ResizePolicy::FILL_TO_PARENT, Dimension::ALL_DIMENSIONS );
 467
 468   SetFocusIndicatorActor(focusIndicator);
 469 }
 470
 471 void KeyboardFocusManager::OnPhysicalKeyboardStatusChanged(PhysicalKeyboard keyboard)
 472 {
 473   mIsKeyboardFocusEnabled = keyboard.IsAttached();
 474
 475   if(mIsKeyboardFocusEnabled)
 476   {
 477     // Show indicator when keyboard focus turned on if there is focused actor.
 478     Actor actor = GetCurrentFocusActor();
 479     if(actor)
 480     {
 481       if(mFocusIndicatorActor)
 482       {
 483         actor.Add(mFocusIndicatorActor);
 484       }
 485     }
 486     mIsFocusIndicatorEnabled = true;
 487   }
 488   else
 489   {
 490     // Hide indicator when keyboard focus turned off
 491     Actor actor = GetCurrentFocusActor();
 492     if(actor)
 493     {
 494       actor.Remove(mFocusIndicatorActor);
 495     }
 496     mIsFocusIndicatorEnabled = false;
 497   }
 498 }
 499
 500 void KeyboardFocusManager::OnKeyEvent(const KeyEvent& event)
 501 {
 502   if(!mIsKeyboardFocusEnabled)
 503   {
 504     return;
 505   }
 506
 507   AccessibilityAdaptor accessibilityAdaptor = AccessibilityAdaptor::Get();
 508   bool isAccessibilityEnabled = accessibilityAdaptor.IsEnabled();
 509
 510   Toolkit::AccessibilityManager accessibilityManager = Toolkit::AccessibilityManager::Get();
 511
 512   std::string keyName = event.keyPressedName;
 513
 514   bool isFocusStartableKey = false;
 515
 516   if(event.state == KeyEvent::Down)
 517   {
 518     if (keyName == "Left")
 519     {
 520       if(!isAccessibilityEnabled)
 521       {
 522         if(!mIsFocusIndicatorEnabled)
 523         {
 524           // Show focus indicator
 525           mIsFocusIndicatorEnabled = true;
 526         }
 527         else
 528         {
 529           // Move the focus towards left
 530           MoveFocus(Toolkit::Control::KeyboardFocus::LEFT);
 531         }
 532
 533         isFocusStartableKey = true;
 534       }
 535       else
 536       {
 537         // Move the accessibility focus backward
 538         accessibilityManager.MoveFocusBackward();
 539       }
 540     }
 541     else if (keyName == "Right")
 542     {
 543       if(!isAccessibilityEnabled)
 544       {
 545         if(!mIsFocusIndicatorEnabled)
 546         {
 547           // Show focus indicator
 548           mIsFocusIndicatorEnabled = true;
 549         }
 550         else
 551         {
 552           // Move the focus towards right
 553           MoveFocus(Toolkit::Control::KeyboardFocus::RIGHT);
 554         }
 555       }
 556       else
 557       {
 558         // Move the accessibility focus forward
 559         accessibilityManager.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::KeyboardFocus::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::KeyboardFocus::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         // The focused actor has enter pressed on it
 648         Actor actor;
 649         if( !isAccessibilityEnabled )
 650         {
 651           actor = GetCurrentFocusActor();
 652         }
 653         else
 654         {
 655           actor = accessibilityManager.GetCurrentFocusActor();
 656         }
 657
 658         if( actor )
 659         {
 660           DoKeyboardEnter( 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::KeyboardFocus::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::OnTouch(const TouchData& touch)
 686 {
 687   // Clear the focus when user touch the screen.
 688   // We only do this on a Down event, otherwise the clear action may override a manually focused actor.
 689   if( ( touch.GetPointCount() < 1 ) || ( touch.GetState( 0 ) == PointState::DOWN ) )
 690   {
 691     ClearFocus();
 692   }
 693 }
 694
 695 Toolkit::KeyboardFocusManager::PreFocusChangeSignalType& KeyboardFocusManager::PreFocusChangeSignal()
 696 {
 697   return mPreFocusChangeSignal;
 698 }
 699
 700 Toolkit::KeyboardFocusManager::FocusChangedSignalType& KeyboardFocusManager::FocusChangedSignal()
 701 {
 702   return mFocusChangedSignal;
 703 }
 704
 705 Toolkit::KeyboardFocusManager::FocusGroupChangedSignalType& KeyboardFocusManager::FocusGroupChangedSignal()
 706 {
 707   return mFocusGroupChangedSignal;
 708 }
 709
 710 Toolkit::KeyboardFocusManager::FocusedActorEnterKeySignalType& KeyboardFocusManager::FocusedActorEnterKeySignal()
 711 {
 712   return mFocusedActorEnterKeySignal;
 713 }
 714
 715 bool KeyboardFocusManager::DoConnectSignal( BaseObject* object, ConnectionTrackerInterface* tracker, const std::string& signalName, FunctorDelegate* functor )
 716 {
 717   Dali::BaseHandle handle( object );
 718
 719   bool connected( true );
 720   KeyboardFocusManager* manager = dynamic_cast<KeyboardFocusManager*>( object );
 721
 722   if( 0 == strcmp( signalName.c_str(), SIGNAL_PRE_FOCUS_CHANGE ) )
 723   {
 724     manager->PreFocusChangeSignal().Connect( tracker, functor );
 725   }
 726   if( 0 == strcmp( signalName.c_str(), SIGNAL_FOCUS_CHANGED ) )
 727   {
 728     manager->FocusChangedSignal().Connect( tracker, functor );
 729   }
 730   if( 0 == strcmp( signalName.c_str(), SIGNAL_FOCUS_GROUP_CHANGED ) )
 731   {
 732     manager->FocusGroupChangedSignal().Connect( tracker, functor );
 733   }
 734   else if( 0 == strcmp( signalName.c_str(), SIGNAL_FOCUSED_ACTOR_ENTER_KEY ) )
 735   {
 736     manager->FocusedActorEnterKeySignal().Connect( tracker, functor );
 737   }
 738   else
 739   {
 740     // signalName does not match any signal
 741     connected = false;
 742   }
 743
 744   return connected;
 745 }
 746
 747 } // namespace Internal
 748
 749 } // namespace Toolkit
 750
 751 } // namespace Dali