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 <dali/public-api/actors/layer.h>
  23 #include <dali/public-api/adaptor-framework/accessibility-manager.h>
  24 #include <dali/public-api/adaptor-framework/singleton-service.h>
  25 #include <dali/public-api/animation/constraints.h>
  26 #include <dali/public-api/common/stage.h>
  27 #include <dali/public-api/events/key-event.h>
  28 #include <dali/public-api/object/type-registry.h>
  29 #include <dali/public-api/images/resource-image.h>
  30
  31 // INTERNAL INCLUDES
  32 #include <dali-toolkit/public-api/controls/control.h>
  33 #include <dali-toolkit/public-api/controls/control-impl.h>
  34 #include <dali-toolkit/public-api/focus-manager/focus-manager.h>
  35 #include <dali-toolkit/public-api/focus-manager/keyinput-focus-manager.h>
  36 #include <dali/integration-api/debug.h>
  37
  38 namespace Dali
  39 {
  40
  41 namespace Toolkit
  42 {
  43
  44 namespace Internal
  45 {
  46
  47 namespace // unnamed namespace
  48 {
  49
  50 #if defined(DEBUG_ENABLED)
  51 Debug::Filter* gLogFilter = Debug::Filter::New(Debug::NoLogging, false, "LOG_KEYBOARD_FOCUS_MANAGER");
  52 #endif
  53
  54 const std::string IS_FOCUS_GROUP_PROPERTY_NAME("is-keyboard-focus-group"); // This property will be replaced by a flag in Control.
  55
  56 const char* FOCUS_BORDER_IMAGE_PATH = DALI_IMAGE_DIR "keyboard_focus.png";
  57 const Vector4 FOCUS_BORDER_IMAGE_BORDER = Vector4(7.0f, 7.0f, 7.0f, 7.0f);
  58
  59 BaseHandle Create()
  60 {
  61   BaseHandle handle = KeyboardFocusManager::Get();
  62
  63   if ( !handle )
  64   {
  65     SingletonService singletonService( SingletonService::Get() );
  66     if ( singletonService )
  67     {
  68       Toolkit::KeyboardFocusManager manager = Toolkit::KeyboardFocusManager( new Internal::KeyboardFocusManager() );
  69       singletonService.Register( typeid( manager ), manager );
  70       handle = manager;
  71     }
  72   }
  73
  74   return handle;
  75 }
  76 TypeRegistration KEYBOARD_FOCUS_MANAGER_TYPE( typeid(Dali::Toolkit::KeyboardFocusManager), typeid(Dali::BaseHandle), Create, true /* Create instance at startup */ );
  77
  78 } // unnamed namespace
  79
  80 Toolkit::KeyboardFocusManager KeyboardFocusManager::Get()
  81 {
  82   Toolkit::KeyboardFocusManager manager;
  83
  84   SingletonService singletonService( SingletonService::Get() );
  85   if ( singletonService )
  86   {
  87     // Check whether the keyboard focus manager is already created
  88     Dali::BaseHandle handle = singletonService.GetSingleton( typeid( Toolkit::KeyboardFocusManager ) );
  89     if(handle)
  90     {
  91       // If so, downcast the handle of singleton to keyboard focus manager
  92       manager = Toolkit::KeyboardFocusManager( dynamic_cast< KeyboardFocusManager* >( handle.GetObjectPtr() ) );
  93     }
  94   }
  95
  96   return manager;
  97 }
  98
  99 KeyboardFocusManager::KeyboardFocusManager()
 100 : mCurrentFocusActor(0),
 101   mFocusIndicatorActor(Actor()),
 102   mFocusGroupLoopEnabled(false),
 103   mIsKeyboardFocusEnabled(false),
 104   mIsFocusIndicatorEnabled(false),
 105   mIsWaitingKeyboardFocusChangeCommit(false),
 106   mSlotDelegate(this)
 107 {
 108   CreateDefaultFocusIndicatorActor();
 109
 110   OnPhysicalKeyboardStatusChanged(PhysicalKeyboard::Get());
 111
 112   Toolkit::KeyInputFocusManager::Get().UnhandledKeyEventSignal().Connect(mSlotDelegate, &KeyboardFocusManager::OnKeyEvent);
 113   Stage::GetCurrent().TouchedSignal().Connect(mSlotDelegate, &KeyboardFocusManager::OnTouched);
 114   PhysicalKeyboard::Get().StatusChangedSignal().Connect(mSlotDelegate, &KeyboardFocusManager::OnPhysicalKeyboardStatusChanged);
 115 }
 116
 117 KeyboardFocusManager::~KeyboardFocusManager()
 118 {
 119 }
 120
 121 bool KeyboardFocusManager::SetCurrentFocusActor(Actor actor)
 122 {
 123   DALI_ASSERT_DEBUG( !mIsWaitingKeyboardFocusChangeCommit && "Calling this function in the PreFocusChangeSignal callback?" );
 124
 125   if(actor)
 126   {
 127     return DoSetCurrentFocusActor(actor.GetId());
 128   }
 129
 130   return false;
 131 }
 132
 133 bool KeyboardFocusManager::DoSetCurrentFocusActor(const unsigned int actorID)
 134 {
 135   Actor rootActor = Stage::GetCurrent().GetRootLayer();
 136   Actor actor = rootActor.FindChildById(actorID);
 137
 138   // Check whether the actor is in the stage
 139   if(actor)
 140   {
 141     // Set the focus only when the actor is keyboard focusable
 142     if(actor.IsKeyboardFocusable())
 143     {
 144       // Draw the focus indicator upon the focused actor
 145       if(mIsFocusIndicatorEnabled && mFocusIndicatorActor)
 146       {
 147         actor.Add(mFocusIndicatorActor);
 148       }
 149
 150       // Send notification for the change of focus actor
 151       if( !mFocusChangedSignal.Empty() )
 152       {
 153         mFocusChangedSignal.Emit(GetCurrentFocusActor(), actor);
 154       }
 155
 156       DALI_LOG_INFO( gLogFilter, Debug::General, "[%s:%d] Focus Changed\n", __FUNCTION__, __LINE__);
 157
 158       // Save the current focused actor
 159       mCurrentFocusActor = actorID;
 160
 161       // Move the accessibility focus to the same actor
 162 //      Toolkit::FocusManager focusManager = Toolkit::FocusManager::Get();
 163 //      focusManager.SetCurrentFocusActor(actor);
 164
 165       DALI_LOG_INFO( gLogFilter, Debug::General, "[%s:%d] SUCCEED\n", __FUNCTION__, __LINE__);
 166       return true;
 167     }
 168   }
 169
 170   DALI_LOG_WARNING("[%s:%d] FAILED\n", __FUNCTION__, __LINE__);
 171   return false;
 172 }
 173
 174 Actor KeyboardFocusManager::GetCurrentFocusActor()
 175 {
 176   Actor rootActor = Stage::GetCurrent().GetRootLayer();
 177   return rootActor.FindChildById(mCurrentFocusActor);
 178 }
 179
 180 Actor KeyboardFocusManager::GetCurrentFocusGroup()
 181 {
 182   return GetFocusGroup(GetCurrentFocusActor());
 183 }
 184
 185 bool KeyboardFocusManager::IsLayoutControl(Actor actor) const
 186 {
 187   Toolkit::Control control = Toolkit::Control::DownCast(actor);
 188   return control && control.GetImplementation().IsKeyboardNavigationSupported();
 189 }
 190
 191 Toolkit::Control KeyboardFocusManager::GetParentLayoutControl(Actor actor) const
 192 {
 193   // Get the actor's parent layout control that supports two dimensional keyboard navigation
 194   Actor rootActor = Stage::GetCurrent().GetRootLayer();
 195   Actor parent;
 196   if(actor)
 197   {
 198     parent = actor.GetParent();
 199   }
 200
 201   while( parent && !IsLayoutControl(parent) && parent != rootActor )
 202   {
 203     parent = parent.GetParent();
 204   }
 205
 206   return Toolkit::Control::DownCast(parent);
 207 }
 208
 209 bool KeyboardFocusManager::MoveFocus(Toolkit::Control::KeyboardFocusNavigationDirection direction)
 210 {
 211   Actor currentFocusActor = GetCurrentFocusActor();
 212
 213   bool succeed = false;
 214
 215   // Go through the actor's hierarchy until we find a layout control that knows how to move the focus
 216   Toolkit::Control parentLayoutControl = GetParentLayoutControl(currentFocusActor);
 217   while(parentLayoutControl && !succeed)
 218   {
 219     succeed = DoMoveFocusWithinLayoutControl(parentLayoutControl, currentFocusActor, direction);
 220     parentLayoutControl = GetParentLayoutControl(parentLayoutControl);
 221   }
 222
 223   if(!succeed && !mPreFocusChangeSignal.Empty())
 224   {
 225     // Don't know how to move the focus further. The application needs to tell us which actor to move the focus to
 226     mIsWaitingKeyboardFocusChangeCommit = true;
 227     Actor nextFocusableActor = mPreFocusChangeSignal.Emit(currentFocusActor, Actor(), direction);
 228     mIsWaitingKeyboardFocusChangeCommit = false;
 229
 230     if ( nextFocusableActor && nextFocusableActor.IsKeyboardFocusable() )
 231     {
 232       // Whether the next focusable actor is a layout control
 233       if(IsLayoutControl(nextFocusableActor))
 234       {
 235         // If so, move the focus inside it.
 236         Toolkit::Control layoutControl = Toolkit::Control::DownCast(nextFocusableActor);
 237         succeed = DoMoveFocusWithinLayoutControl(layoutControl, currentFocusActor, direction);
 238       }
 239       else
 240       {
 241         // Otherwise, just set focus to the next focusable actor
 242         succeed = SetCurrentFocusActor(nextFocusableActor);
 243       }
 244     }
 245   }
 246
 247   return succeed;
 248 }
 249
 250 bool KeyboardFocusManager::DoMoveFocusWithinLayoutControl(Toolkit::Control control, Actor actor, Toolkit::Control::KeyboardFocusNavigationDirection direction)
 251 {
 252   // Ask the control for the next actor to focus
 253   Actor nextFocusableActor = control.GetImplementation().GetNextKeyboardFocusableActor(actor, direction, mFocusGroupLoopEnabled);
 254   if(nextFocusableActor)
 255   {
 256     if(!nextFocusableActor.IsKeyboardFocusable())
 257     {
 258       // If the actor is not focusable, ask the same layout control for the next actor to focus
 259       return DoMoveFocusWithinLayoutControl(control, nextFocusableActor, direction);
 260     }
 261     else
 262     {
 263       Actor currentFocusActor = GetCurrentFocusActor();
 264       Actor committedFocusActor = nextFocusableActor;
 265
 266       // We will try to move the focus to the actor. Emit a signal to notify the proposed actor to focus
 267       // Signal handler can check the proposed actor and return a different actor if it wishes.
 268       if( !mPreFocusChangeSignal.Empty() )
 269       {
 270         mIsWaitingKeyboardFocusChangeCommit = true;
 271         committedFocusActor = mPreFocusChangeSignal.Emit(currentFocusActor, nextFocusableActor, direction);
 272         mIsWaitingKeyboardFocusChangeCommit = false;
 273       }
 274
 275       if (committedFocusActor && committedFocusActor.IsKeyboardFocusable())
 276       {
 277         // Whether the commited focusable actor is a layout control
 278         if(IsLayoutControl(committedFocusActor))
 279         {
 280           // If so, move the focus inside it.
 281           Toolkit::Control layoutControl = Toolkit::Control::DownCast(committedFocusActor);
 282           return DoMoveFocusWithinLayoutControl(layoutControl, currentFocusActor, direction);
 283         }
 284         else
 285         {
 286           // Otherwise, just set focus to the next focusable actor
 287           if(committedFocusActor == nextFocusableActor)
 288           {
 289             // If the application hasn't changed our proposed actor, we informs the layout control we will
 290             // move the focus to what the control returns. The control might wish to perform some actions
 291             // before the focus is actually moved.
 292             control.GetImplementation().OnKeyboardFocusChangeCommitted(committedFocusActor);
 293           }
 294
 295           return SetCurrentFocusActor(committedFocusActor);
 296         }
 297       }
 298       else
 299       {
 300         return false;
 301       }
 302     }
 303   }
 304   else
 305   {
 306     // No more actor can be focused in the given direction within the same layout control.
 307     return false;
 308   }
 309 }
 310
 311 bool KeyboardFocusManager::DoMoveFocusToNextFocusGroup(bool forward)
 312 {
 313   bool succeed = false;
 314
 315   // Get the parent layout control of the current focus group
 316   Toolkit::Control parentLayoutControl = GetParentLayoutControl(GetCurrentFocusGroup());
 317
 318   while(parentLayoutControl && !succeed)
 319   {
 320     // If the current focus group has a parent layout control, we can probably automatically
 321     // move the focus to the next focus group in the forward or backward direction.
 322     Toolkit::Control::KeyboardFocusNavigationDirection direction = forward ? Toolkit::Control::Right : Toolkit::Control::Left;
 323     succeed = DoMoveFocusWithinLayoutControl(parentLayoutControl, GetCurrentFocusActor(), direction);
 324     parentLayoutControl = GetParentLayoutControl(parentLayoutControl);
 325   }
 326
 327   if(!mFocusGroupChangedSignal.Empty())
 328   {
 329     // Emit a focus group changed signal. The applicaton can move the focus to a new focus group
 330     mFocusGroupChangedSignal.Emit(GetCurrentFocusActor(), forward);
 331   }
 332
 333   return succeed;
 334 }
 335
 336 void KeyboardFocusManager::DoActivate(Actor actor)
 337 {
 338   if(actor)
 339   {
 340     Toolkit::Control control = Toolkit::Control::DownCast(actor);
 341     if(control)
 342     {
 343       // Notify the control that it is activated
 344       control.GetImplementation().Activate();
 345     }
 346
 347     // Send notification for the activation of focused actor
 348     if( !mFocusedActorActivatedSignal.Empty() )
 349     {
 350       mFocusedActorActivatedSignal.Emit(actor);
 351     }
 352   }
 353 }
 354
 355 void KeyboardFocusManager::ClearFocus()
 356 {
 357   Actor actor = GetCurrentFocusActor();
 358   if(actor)
 359   {
 360     if(mFocusIndicatorActor)
 361     {
 362       actor.Remove(mFocusIndicatorActor);
 363     }
 364
 365     // Send notification for the change of focus actor
 366     if( !mFocusChangedSignal.Empty() )
 367     {
 368       mFocusChangedSignal.Emit(actor, Actor());
 369     }
 370   }
 371
 372   mCurrentFocusActor = 0;
 373   mIsFocusIndicatorEnabled = false;
 374 }
 375
 376 void KeyboardFocusManager::SetFocusGroupLoop(bool enabled)
 377 {
 378   mFocusGroupLoopEnabled = enabled;
 379 }
 380
 381 bool KeyboardFocusManager::GetFocusGroupLoop() const
 382 {
 383   return mFocusGroupLoopEnabled;
 384 }
 385
 386 void KeyboardFocusManager::SetAsFocusGroup(Actor actor, bool isFocusGroup)
 387 {
 388   if(actor)
 389   {
 390     // Create focus group property if not already created.
 391     Property::Index propertyIsFocusGroup = actor.GetPropertyIndex(IS_FOCUS_GROUP_PROPERTY_NAME);
 392     if(propertyIsFocusGroup == Property::INVALID_INDEX)
 393     {
 394       actor.RegisterProperty(IS_FOCUS_GROUP_PROPERTY_NAME, isFocusGroup);
 395     }
 396     else
 397     {
 398       actor.SetProperty(propertyIsFocusGroup, isFocusGroup);
 399     }
 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   Image borderImage = ResourceImage::New(FOCUS_BORDER_IMAGE_PATH);
 463
 464   ImageActor focusIndicator = ImageActor::New(borderImage);
 465   focusIndicator.SetPositionInheritanceMode( Dali::USE_PARENT_POSITION_PLUS_LOCAL_POSITION );
 466   focusIndicator.SetStyle( ImageActor::STYLE_NINE_PATCH );
 467   focusIndicator.SetNinePatchBorder(FOCUS_BORDER_IMAGE_BORDER);
 468   focusIndicator.SetPosition(Vector3(0.0f, 0.0f, 1.0f));
 469
 470   // Apply size constraint to the focus indicator
 471   Constraint constraint = Constraint::New<Vector3>(Actor::SIZE,
 472                                                    ParentSource(Actor::SIZE),
 473                                                    EqualToConstraint());
 474   focusIndicator.ApplyConstraint(constraint);
 475
 476   SetFocusIndicatorActor(focusIndicator);
 477 }
 478
 479 void KeyboardFocusManager::OnPhysicalKeyboardStatusChanged(PhysicalKeyboard keyboard)
 480 {
 481   mIsKeyboardFocusEnabled = keyboard.IsAttached();
 482
 483   if(mIsKeyboardFocusEnabled)
 484   {
 485     // Show indicator when keyboard focus turned on if there is focused actor.
 486     Actor actor = GetCurrentFocusActor();
 487     if(actor)
 488     {
 489       if(mFocusIndicatorActor)
 490       {
 491         actor.Add(mFocusIndicatorActor);
 492       }
 493     }
 494     mIsFocusIndicatorEnabled = true;
 495   }
 496   else
 497   {
 498     // Hide indicator when keyboard focus turned off
 499     Actor actor = GetCurrentFocusActor();
 500     if(actor)
 501     {
 502       actor.Remove(mFocusIndicatorActor);
 503     }
 504     mIsFocusIndicatorEnabled = false;
 505   }
 506 }
 507
 508 void KeyboardFocusManager::OnKeyEvent(const KeyEvent& event)
 509 {
 510   if(!mIsKeyboardFocusEnabled)
 511   {
 512     return;
 513   }
 514
 515   AccessibilityManager accessibilityManager = AccessibilityManager::Get();
 516   bool isAccessibilityEnabled = accessibilityManager.IsEnabled();
 517
 518   Toolkit::FocusManager accessibilityFocusManager = Toolkit::FocusManager::Get();
 519
 520   std::string keyName = event.keyPressedName;
 521
 522   bool isFocusStartableKey = false;
 523
 524   if(event.state == KeyEvent::Down)
 525   {
 526     if (keyName == "Left")
 527     {
 528       if(!isAccessibilityEnabled)
 529       {
 530         if(!mIsFocusIndicatorEnabled)
 531         {
 532           // Show focus indicator
 533           mIsFocusIndicatorEnabled = true;
 534         }
 535         else
 536         {
 537           // Move the focus towards left
 538           MoveFocus(Toolkit::Control::Left);
 539         }
 540
 541         isFocusStartableKey = true;
 542       }
 543       else
 544       {
 545         // Move the accessibility focus backward
 546         accessibilityFocusManager.MoveFocusBackward();
 547       }
 548     }
 549     else if (keyName == "Right")
 550     {
 551       if(!isAccessibilityEnabled)
 552       {
 553         if(!mIsFocusIndicatorEnabled)
 554         {
 555           // Show focus indicator
 556           mIsFocusIndicatorEnabled = true;
 557         }
 558         else
 559         {
 560           // Move the focus towards right
 561           MoveFocus(Toolkit::Control::Right);
 562         }
 563       }
 564       else
 565       {
 566         // Move the accessibility focus forward
 567         accessibilityFocusManager.MoveFocusForward();
 568       }
 569
 570       isFocusStartableKey = true;
 571     }
 572     else if (keyName == "Up" && !isAccessibilityEnabled)
 573     {
 574       if(!mIsFocusIndicatorEnabled)
 575       {
 576         // Show focus indicator
 577         mIsFocusIndicatorEnabled = true;
 578       }
 579       else
 580       {
 581         // Move the focus towards up
 582         MoveFocus(Toolkit::Control::Up);
 583       }
 584
 585       isFocusStartableKey = true;
 586     }
 587     else if (keyName == "Down" && !isAccessibilityEnabled)
 588     {
 589       if(!mIsFocusIndicatorEnabled)
 590       {
 591         // Show focus indicator
 592         mIsFocusIndicatorEnabled = true;
 593       }
 594       else
 595       {
 596         // Move the focus towards down
 597         MoveFocus(Toolkit::Control::Down);
 598       }
 599
 600       isFocusStartableKey = true;
 601     }
 602     else if (keyName == "Tab" && !isAccessibilityEnabled)
 603     {
 604       if(!mIsFocusIndicatorEnabled)
 605       {
 606         // Show focus indicator
 607         mIsFocusIndicatorEnabled = true;
 608       }
 609       else
 610       {
 611         // "Tab" key changes the focus group in the forward direction and
 612         // "Shift-Tab" key changes it in the backward direction.
 613         DoMoveFocusToNextFocusGroup(!event.IsShiftModifier());
 614       }
 615
 616       isFocusStartableKey = true;
 617     }
 618     else if (keyName == "space" && !isAccessibilityEnabled)
 619     {
 620       if(!mIsFocusIndicatorEnabled)
 621       {
 622         // Show focus indicator
 623         mIsFocusIndicatorEnabled = true;
 624       }
 625
 626       isFocusStartableKey = true;
 627     }
 628     else if (keyName == "" && !isAccessibilityEnabled)
 629     {
 630       // Check the fake key event for evas-plugin case
 631       if(!mIsFocusIndicatorEnabled)
 632       {
 633         // Show focus indicator
 634         mIsFocusIndicatorEnabled = true;
 635       }
 636
 637       isFocusStartableKey = true;
 638     }
 639     else if (keyName == "Backspace" && !isAccessibilityEnabled)
 640     {
 641       // Emit signal to go back to the previous view???
 642     }
 643   }
 644   else if(event.state == KeyEvent::Up)
 645   {
 646     if (keyName == "Return")
 647     {
 648       if(!mIsFocusIndicatorEnabled && !isAccessibilityEnabled)
 649       {
 650         // Show focus indicator
 651         mIsFocusIndicatorEnabled = true;
 652       }
 653       else
 654       {
 655         // Activate the focused actor
 656         Actor actor;
 657         if(!isAccessibilityEnabled)
 658         {
 659           actor = GetCurrentFocusActor();
 660         }
 661         else
 662         {
 663           actor = accessibilityFocusManager.GetCurrentFocusActor();
 664         }
 665
 666         if(actor)
 667         {
 668           DoActivate(actor);
 669         }
 670       }
 671
 672       isFocusStartableKey = true;
 673     }
 674   }
 675
 676   if(isFocusStartableKey && mIsFocusIndicatorEnabled && !isAccessibilityEnabled)
 677   {
 678     Actor actor = GetCurrentFocusActor();
 679     if( !actor )
 680     {
 681       // No actor is focused but keyboard focus is activated by the key press
 682       // Let's try to move the initial focus
 683       MoveFocus(Toolkit::Control::Right);
 684     }
 685     else if(mFocusIndicatorActor)
 686     {
 687       // Make sure the focused actor is highlighted
 688       actor.Add(mFocusIndicatorActor);
 689     }
 690   }
 691 }
 692
 693 void KeyboardFocusManager::OnTouched(const TouchEvent& touchEvent)
 694 {
 695   // Clear the focus when user touch the screen
 696   ClearFocus();
 697 }
 698
 699 Toolkit::KeyboardFocusManager::PreFocusChangeSignalType& KeyboardFocusManager::PreFocusChangeSignal()
 700 {
 701   return mPreFocusChangeSignal;
 702 }
 703
 704 Toolkit::KeyboardFocusManager::FocusChangedSignalType& KeyboardFocusManager::FocusChangedSignal()
 705 {
 706   return mFocusChangedSignal;
 707 }
 708
 709 Toolkit::KeyboardFocusManager::FocusGroupChangedSignalType& KeyboardFocusManager::FocusGroupChangedSignal()
 710 {
 711   return mFocusGroupChangedSignal;
 712 }
 713
 714 Toolkit::KeyboardFocusManager::FocusedActorActivatedSignalType& KeyboardFocusManager::FocusedActorActivatedSignal()
 715 {
 716   return mFocusedActorActivatedSignal;
 717 }
 718
 719 bool KeyboardFocusManager::DoConnectSignal( BaseObject* object, ConnectionTrackerInterface* tracker, const std::string& signalName, FunctorDelegate* functor )
 720 {
 721   Dali::BaseHandle handle( object );
 722
 723   bool connected( true );
 724   KeyboardFocusManager* manager = dynamic_cast<KeyboardFocusManager*>(object);
 725
 726   if( Dali::Toolkit::KeyboardFocusManager::SIGNAL_PRE_FOCUS_CHANGE == signalName )
 727   {
 728     manager->PreFocusChangeSignal().Connect( tracker, functor );
 729   }
 730   if( Dali::Toolkit::KeyboardFocusManager::SIGNAL_FOCUS_CHANGED == signalName )
 731   {
 732     manager->FocusChangedSignal().Connect( tracker, functor );
 733   }
 734   if( Dali::Toolkit::KeyboardFocusManager::SIGNAL_FOCUS_GROUP_CHANGED == signalName )
 735   {
 736     manager->FocusGroupChangedSignal().Connect( tracker, functor );
 737   }
 738   else if( Dali::Toolkit::KeyboardFocusManager::SIGNAL_FOCUSED_ACTOR_ACTIVATED== signalName )
 739   {
 740     manager->FocusedActorActivatedSignal().Connect( tracker, functor );
 741   }
 742   else
 743   {
 744     // signalName does not match any signal
 745     connected = false;
 746   }
 747
 748   return connected;
 749 }
 750
 751 } // namespace Internal
 752
 753 } // namespace Toolkit
 754
 755 } // namespace Dali