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/object/type-registry-helper.h>
  30 #include <dali/public-api/images/resource-image.h>
  31 #include <dali/integration-api/debug.h>
  32
  33 // INTERNAL INCLUDES
  34 #include <dali-toolkit/public-api/controls/control.h>
  35 #include <dali-toolkit/public-api/controls/control-impl.h>
  36 #include <dali-toolkit/public-api/focus-manager/focus-manager.h>
  37 #include <dali-toolkit/public-api/focus-manager/keyinput-focus-manager.h>
  38
  39 namespace Dali
  40 {
  41
  42 namespace Toolkit
  43 {
  44
  45 namespace Internal
  46 {
  47
  48 namespace // Unnamed namespace
  49 {
  50
  51 #if defined(DEBUG_ENABLED)
  52 Debug::Filter* gLogFilter = Debug::Filter::New(Debug::NoLogging, false, "LOG_KEYBOARD_FOCUS_MANAGER");
  53 #endif
  54
  55 const char* const IS_FOCUS_GROUP_PROPERTY_NAME = "is-keyboard-focus-group"; // This property will be replaced by a flag in Control.
  56
  57 const char* const FOCUS_BORDER_IMAGE_PATH = DALI_IMAGE_DIR "keyboard_focus.png";
  58 const Vector4 FOCUS_BORDER_IMAGE_BORDER = Vector4(7.0f, 7.0f, 7.0f, 7.0f);
  59
  60 BaseHandle Create()
  61 {
  62   BaseHandle handle = KeyboardFocusManager::Get();
  63
  64   if ( !handle )
  65   {
  66     SingletonService singletonService( SingletonService::Get() );
  67     if ( singletonService )
  68     {
  69       Toolkit::KeyboardFocusManager manager = Toolkit::KeyboardFocusManager( new Internal::KeyboardFocusManager() );
  70       singletonService.Register( typeid( manager ), manager );
  71       handle = manager;
  72     }
  73   }
  74
  75   return handle;
  76 }
  77
  78 DALI_TYPE_REGISTRATION_BEGIN_CREATE( Toolkit::KeyboardFocusManager, Dali::BaseHandle, Create, true )
  79
  80 DALI_SIGNAL_REGISTRATION( KeyboardFocusManager, "keyboard-pre-focus-change",        SIGNAL_PRE_FOCUS_CHANGE        )
  81 DALI_SIGNAL_REGISTRATION( KeyboardFocusManager, "keyboard-focus-changed",           SIGNAL_FOCUS_CHANGED           )
  82 DALI_SIGNAL_REGISTRATION( KeyboardFocusManager, "keyboard-focus-group-changed",     SIGNAL_FOCUS_GROUP_CHANGED     )
  83 DALI_SIGNAL_REGISTRATION( KeyboardFocusManager, "keyboard-focused-actor-activated", SIGNAL_FOCUSED_ACTOR_ACTIVATED )
  84
  85 DALI_TYPE_REGISTRATION_END()
  86
  87 } // unnamed namespace
  88
  89 Toolkit::KeyboardFocusManager KeyboardFocusManager::Get()
  90 {
  91   Toolkit::KeyboardFocusManager manager;
  92
  93   SingletonService singletonService( SingletonService::Get() );
  94   if ( singletonService )
  95   {
  96     // Check whether the keyboard focus manager is already created
  97     Dali::BaseHandle handle = singletonService.GetSingleton( typeid( Toolkit::KeyboardFocusManager ) );
  98     if(handle)
  99     {
 100       // If so, downcast the handle of singleton to keyboard focus manager
 101       manager = Toolkit::KeyboardFocusManager( dynamic_cast< KeyboardFocusManager* >( handle.GetObjectPtr() ) );
 102     }
 103   }
 104
 105   return manager;
 106 }
 107
 108 KeyboardFocusManager::KeyboardFocusManager()
 109 : mCurrentFocusActor(0),
 110   mFocusIndicatorActor(Actor()),
 111   mFocusGroupLoopEnabled(false),
 112   mIsKeyboardFocusEnabled(false),
 113   mIsFocusIndicatorEnabled(false),
 114   mIsWaitingKeyboardFocusChangeCommit(false),
 115   mSlotDelegate(this)
 116 {
 117   CreateDefaultFocusIndicatorActor();
 118
 119   OnPhysicalKeyboardStatusChanged(PhysicalKeyboard::Get());
 120
 121   Toolkit::KeyInputFocusManager::Get().UnhandledKeyEventSignal().Connect(mSlotDelegate, &KeyboardFocusManager::OnKeyEvent);
 122   Stage::GetCurrent().TouchedSignal().Connect(mSlotDelegate, &KeyboardFocusManager::OnTouched);
 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
 147   // Check whether the actor is in the stage
 148   if(actor)
 149   {
 150     // Set the focus only when the actor is keyboard focusable
 151     if(actor.IsKeyboardFocusable())
 152     {
 153       // Draw the focus indicator upon the focused actor
 154       if(mIsFocusIndicatorEnabled && mFocusIndicatorActor)
 155       {
 156         actor.Add(mFocusIndicatorActor);
 157       }
 158
 159       // Send notification for the change of focus actor
 160       if( !mFocusChangedSignal.Empty() )
 161       {
 162         mFocusChangedSignal.Emit(GetCurrentFocusActor(), actor);
 163       }
 164
 165       DALI_LOG_INFO( gLogFilter, Debug::General, "[%s:%d] Focus Changed\n", __FUNCTION__, __LINE__);
 166
 167       // Save the current focused actor
 168       mCurrentFocusActor = actorID;
 169
 170       // Move the accessibility focus to the same actor
 171 //      Toolkit::FocusManager focusManager = Toolkit::FocusManager::Get();
 172 //      focusManager.SetCurrentFocusActor(actor);
 173
 174       DALI_LOG_INFO( gLogFilter, Debug::General, "[%s:%d] SUCCEED\n", __FUNCTION__, __LINE__);
 175       return true;
 176     }
 177   }
 178
 179   DALI_LOG_WARNING("[%s:%d] FAILED\n", __FUNCTION__, __LINE__);
 180   return false;
 181 }
 182
 183 Actor KeyboardFocusManager::GetCurrentFocusActor()
 184 {
 185   Actor rootActor = Stage::GetCurrent().GetRootLayer();
 186   return rootActor.FindChildById(mCurrentFocusActor);
 187 }
 188
 189 Actor KeyboardFocusManager::GetCurrentFocusGroup()
 190 {
 191   return GetFocusGroup(GetCurrentFocusActor());
 192 }
 193
 194 bool KeyboardFocusManager::IsLayoutControl(Actor actor) const
 195 {
 196   Toolkit::Control control = Toolkit::Control::DownCast(actor);
 197   return control && control.GetImplementation().IsKeyboardNavigationSupported();
 198 }
 199
 200 Toolkit::Control KeyboardFocusManager::GetParentLayoutControl(Actor actor) const
 201 {
 202   // Get the actor's parent layout control that supports two dimensional keyboard navigation
 203   Actor rootActor = Stage::GetCurrent().GetRootLayer();
 204   Actor parent;
 205   if(actor)
 206   {
 207     parent = actor.GetParent();
 208   }
 209
 210   while( parent && !IsLayoutControl(parent) && parent != rootActor )
 211   {
 212     parent = parent.GetParent();
 213   }
 214
 215   return Toolkit::Control::DownCast(parent);
 216 }
 217
 218 bool KeyboardFocusManager::MoveFocus(Toolkit::Control::KeyboardFocusNavigationDirection direction)
 219 {
 220   Actor currentFocusActor = GetCurrentFocusActor();
 221
 222   bool succeed = false;
 223
 224   // Go through the actor's hierarchy until we find a layout control that knows how to move the focus
 225   Toolkit::Control parentLayoutControl = GetParentLayoutControl(currentFocusActor);
 226   while(parentLayoutControl && !succeed)
 227   {
 228     succeed = DoMoveFocusWithinLayoutControl(parentLayoutControl, currentFocusActor, direction);
 229     parentLayoutControl = GetParentLayoutControl(parentLayoutControl);
 230   }
 231
 232   if(!succeed && !mPreFocusChangeSignal.Empty())
 233   {
 234     // Don't know how to move the focus further. The application needs to tell us which actor to move the focus to
 235     mIsWaitingKeyboardFocusChangeCommit = true;
 236     Actor nextFocusableActor = mPreFocusChangeSignal.Emit(currentFocusActor, Actor(), direction);
 237     mIsWaitingKeyboardFocusChangeCommit = false;
 238
 239     if ( nextFocusableActor && nextFocusableActor.IsKeyboardFocusable() )
 240     {
 241       // Whether the next focusable actor is a layout control
 242       if(IsLayoutControl(nextFocusableActor))
 243       {
 244         // If so, move the focus inside it.
 245         Toolkit::Control layoutControl = Toolkit::Control::DownCast(nextFocusableActor);
 246         succeed = DoMoveFocusWithinLayoutControl(layoutControl, currentFocusActor, direction);
 247       }
 248       else
 249       {
 250         // Otherwise, just set focus to the next focusable actor
 251         succeed = SetCurrentFocusActor(nextFocusableActor);
 252       }
 253     }
 254   }
 255
 256   return succeed;
 257 }
 258
 259 bool KeyboardFocusManager::DoMoveFocusWithinLayoutControl(Toolkit::Control control, Actor actor, Toolkit::Control::KeyboardFocusNavigationDirection direction)
 260 {
 261   // Ask the control for the next actor to focus
 262   Actor nextFocusableActor = control.GetImplementation().GetNextKeyboardFocusableActor(actor, direction, mFocusGroupLoopEnabled);
 263   if(nextFocusableActor)
 264   {
 265     if(!nextFocusableActor.IsKeyboardFocusable())
 266     {
 267       // If the actor is not focusable, ask the same layout control for the next actor to focus
 268       return DoMoveFocusWithinLayoutControl(control, nextFocusableActor, direction);
 269     }
 270     else
 271     {
 272       Actor currentFocusActor = GetCurrentFocusActor();
 273       Actor committedFocusActor = nextFocusableActor;
 274
 275       // We will try to move the focus to the actor. Emit a signal to notify the proposed actor to focus
 276       // Signal handler can check the proposed actor and return a different actor if it wishes.
 277       if( !mPreFocusChangeSignal.Empty() )
 278       {
 279         mIsWaitingKeyboardFocusChangeCommit = true;
 280         committedFocusActor = mPreFocusChangeSignal.Emit(currentFocusActor, nextFocusableActor, direction);
 281         mIsWaitingKeyboardFocusChangeCommit = false;
 282       }
 283
 284       if (committedFocusActor && committedFocusActor.IsKeyboardFocusable())
 285       {
 286         // Whether the commited focusable actor is a layout control
 287         if(IsLayoutControl(committedFocusActor))
 288         {
 289           // If so, move the focus inside it.
 290           Toolkit::Control layoutControl = Toolkit::Control::DownCast(committedFocusActor);
 291           return DoMoveFocusWithinLayoutControl(layoutControl, currentFocusActor, direction);
 292         }
 293         else
 294         {
 295           // Otherwise, just set focus to the next focusable actor
 296           if(committedFocusActor == nextFocusableActor)
 297           {
 298             // If the application hasn't changed our proposed actor, we informs the layout control we will
 299             // move the focus to what the control returns. The control might wish to perform some actions
 300             // before the focus is actually moved.
 301             control.GetImplementation().OnKeyboardFocusChangeCommitted(committedFocusActor);
 302           }
 303
 304           return SetCurrentFocusActor(committedFocusActor);
 305         }
 306       }
 307       else
 308       {
 309         return false;
 310       }
 311     }
 312   }
 313   else
 314   {
 315     // No more actor can be focused in the given direction within the same layout control.
 316     return false;
 317   }
 318 }
 319
 320 bool KeyboardFocusManager::DoMoveFocusToNextFocusGroup(bool forward)
 321 {
 322   bool succeed = false;
 323
 324   // Get the parent layout control of the current focus group
 325   Toolkit::Control parentLayoutControl = GetParentLayoutControl(GetCurrentFocusGroup());
 326
 327   while(parentLayoutControl && !succeed)
 328   {
 329     // If the current focus group has a parent layout control, we can probably automatically
 330     // move the focus to the next focus group in the forward or backward direction.
 331     Toolkit::Control::KeyboardFocusNavigationDirection direction = forward ? Toolkit::Control::Right : Toolkit::Control::Left;
 332     succeed = DoMoveFocusWithinLayoutControl(parentLayoutControl, GetCurrentFocusActor(), direction);
 333     parentLayoutControl = GetParentLayoutControl(parentLayoutControl);
 334   }
 335
 336   if(!mFocusGroupChangedSignal.Empty())
 337   {
 338     // Emit a focus group changed signal. The applicaton can move the focus to a new focus group
 339     mFocusGroupChangedSignal.Emit(GetCurrentFocusActor(), forward);
 340   }
 341
 342   return succeed;
 343 }
 344
 345 void KeyboardFocusManager::DoActivate(Actor actor)
 346 {
 347   if(actor)
 348   {
 349     Toolkit::Control control = Toolkit::Control::DownCast(actor);
 350     if(control)
 351     {
 352       // Notify the control that it is activated
 353       control.GetImplementation().Activate();
 354     }
 355
 356     // Send notification for the activation of focused actor
 357     if( !mFocusedActorActivatedSignal.Empty() )
 358     {
 359       mFocusedActorActivatedSignal.Emit(actor);
 360     }
 361   }
 362 }
 363
 364 void KeyboardFocusManager::ClearFocus()
 365 {
 366   Actor actor = GetCurrentFocusActor();
 367   if(actor)
 368   {
 369     if(mFocusIndicatorActor)
 370     {
 371       actor.Remove(mFocusIndicatorActor);
 372     }
 373
 374     // Send notification for the change of focus actor
 375     if( !mFocusChangedSignal.Empty() )
 376     {
 377       mFocusChangedSignal.Emit(actor, Actor());
 378     }
 379   }
 380
 381   mCurrentFocusActor = 0;
 382   mIsFocusIndicatorEnabled = false;
 383 }
 384
 385 void KeyboardFocusManager::SetFocusGroupLoop(bool enabled)
 386 {
 387   mFocusGroupLoopEnabled = enabled;
 388 }
 389
 390 bool KeyboardFocusManager::GetFocusGroupLoop() const
 391 {
 392   return mFocusGroupLoopEnabled;
 393 }
 394
 395 void KeyboardFocusManager::SetAsFocusGroup(Actor actor, bool isFocusGroup)
 396 {
 397   if(actor)
 398   {
 399     // Create focus group property if not already created.
 400     Property::Index propertyIsFocusGroup = actor.GetPropertyIndex(IS_FOCUS_GROUP_PROPERTY_NAME);
 401     if(propertyIsFocusGroup == Property::INVALID_INDEX)
 402     {
 403       actor.RegisterProperty(IS_FOCUS_GROUP_PROPERTY_NAME, isFocusGroup);
 404     }
 405     else
 406     {
 407       actor.SetProperty(propertyIsFocusGroup, isFocusGroup);
 408     }
 409   }
 410 }
 411
 412 bool KeyboardFocusManager::IsFocusGroup(Actor actor) const
 413 {
 414   // Check whether the actor is a focus group
 415   bool isFocusGroup = false;
 416
 417   if(actor)
 418   {
 419     Property::Index propertyIsFocusGroup = actor.GetPropertyIndex(IS_FOCUS_GROUP_PROPERTY_NAME);
 420     if(propertyIsFocusGroup != Property::INVALID_INDEX)
 421     {
 422       isFocusGroup = actor.GetProperty<bool>(propertyIsFocusGroup);
 423     }
 424   }
 425
 426   return isFocusGroup;
 427 }
 428
 429 Actor KeyboardFocusManager::GetFocusGroup(Actor actor)
 430 {
 431   // Go through the actor's hierarchy to check which focus group the actor belongs to
 432   while (actor && !IsFocusGroup(actor))
 433   {
 434     actor = actor.GetParent();
 435   }
 436
 437   return actor;
 438 }
 439
 440 void KeyboardFocusManager::SetFocusIndicatorActor(Actor indicator)
 441 {
 442   if(mFocusIndicatorActor != indicator)
 443   {
 444     Actor currentFocusActor = GetCurrentFocusActor();
 445     if(currentFocusActor)
 446     {
 447       // The new focus indicator should be added to the current focused actor immediately
 448       if(mFocusIndicatorActor)
 449       {
 450         currentFocusActor.Remove(mFocusIndicatorActor);
 451       }
 452
 453       if(indicator)
 454       {
 455         currentFocusActor.Add(indicator);
 456       }
 457     }
 458
 459     mFocusIndicatorActor = indicator;
 460   }
 461 }
 462
 463 Actor KeyboardFocusManager::GetFocusIndicatorActor()
 464 {
 465   return mFocusIndicatorActor;
 466 }
 467
 468 void KeyboardFocusManager::CreateDefaultFocusIndicatorActor()
 469 {
 470   // Create a focus indicator actor shared by all the keyboard focusable actors
 471   Image borderImage = ResourceImage::New(FOCUS_BORDER_IMAGE_PATH);
 472
 473   ImageActor focusIndicator = ImageActor::New(borderImage);
 474   focusIndicator.SetPositionInheritanceMode( Dali::USE_PARENT_POSITION_PLUS_LOCAL_POSITION );
 475   focusIndicator.SetStyle( ImageActor::STYLE_NINE_PATCH );
 476   focusIndicator.SetNinePatchBorder(FOCUS_BORDER_IMAGE_BORDER);
 477   focusIndicator.SetPosition(Vector3(0.0f, 0.0f, 1.0f));
 478
 479   // Apply size constraint to the focus indicator
 480   focusIndicator.SetResizePolicy( FILL_TO_PARENT, ALL_DIMENSIONS );
 481
 482   SetFocusIndicatorActor(focusIndicator);
 483 }
 484
 485 void KeyboardFocusManager::OnPhysicalKeyboardStatusChanged(PhysicalKeyboard keyboard)
 486 {
 487   mIsKeyboardFocusEnabled = keyboard.IsAttached();
 488
 489   if(mIsKeyboardFocusEnabled)
 490   {
 491     // Show indicator when keyboard focus turned on if there is focused actor.
 492     Actor actor = GetCurrentFocusActor();
 493     if(actor)
 494     {
 495       if(mFocusIndicatorActor)
 496       {
 497         actor.Add(mFocusIndicatorActor);
 498       }
 499     }
 500     mIsFocusIndicatorEnabled = true;
 501   }
 502   else
 503   {
 504     // Hide indicator when keyboard focus turned off
 505     Actor actor = GetCurrentFocusActor();
 506     if(actor)
 507     {
 508       actor.Remove(mFocusIndicatorActor);
 509     }
 510     mIsFocusIndicatorEnabled = false;
 511   }
 512 }
 513
 514 void KeyboardFocusManager::OnKeyEvent(const KeyEvent& event)
 515 {
 516   if(!mIsKeyboardFocusEnabled)
 517   {
 518     return;
 519   }
 520
 521   AccessibilityManager accessibilityManager = AccessibilityManager::Get();
 522   bool isAccessibilityEnabled = accessibilityManager.IsEnabled();
 523
 524   Toolkit::FocusManager accessibilityFocusManager = Toolkit::FocusManager::Get();
 525
 526   std::string keyName = event.keyPressedName;
 527
 528   bool isFocusStartableKey = false;
 529
 530   if(event.state == KeyEvent::Down)
 531   {
 532     if (keyName == "Left")
 533     {
 534       if(!isAccessibilityEnabled)
 535       {
 536         if(!mIsFocusIndicatorEnabled)
 537         {
 538           // Show focus indicator
 539           mIsFocusIndicatorEnabled = true;
 540         }
 541         else
 542         {
 543           // Move the focus towards left
 544           MoveFocus(Toolkit::Control::Left);
 545         }
 546
 547         isFocusStartableKey = true;
 548       }
 549       else
 550       {
 551         // Move the accessibility focus backward
 552         accessibilityFocusManager.MoveFocusBackward();
 553       }
 554     }
 555     else if (keyName == "Right")
 556     {
 557       if(!isAccessibilityEnabled)
 558       {
 559         if(!mIsFocusIndicatorEnabled)
 560         {
 561           // Show focus indicator
 562           mIsFocusIndicatorEnabled = true;
 563         }
 564         else
 565         {
 566           // Move the focus towards right
 567           MoveFocus(Toolkit::Control::Right);
 568         }
 569       }
 570       else
 571       {
 572         // Move the accessibility focus forward
 573         accessibilityFocusManager.MoveFocusForward();
 574       }
 575
 576       isFocusStartableKey = true;
 577     }
 578     else if (keyName == "Up" && !isAccessibilityEnabled)
 579     {
 580       if(!mIsFocusIndicatorEnabled)
 581       {
 582         // Show focus indicator
 583         mIsFocusIndicatorEnabled = true;
 584       }
 585       else
 586       {
 587         // Move the focus towards up
 588         MoveFocus(Toolkit::Control::Up);
 589       }
 590
 591       isFocusStartableKey = true;
 592     }
 593     else if (keyName == "Down" && !isAccessibilityEnabled)
 594     {
 595       if(!mIsFocusIndicatorEnabled)
 596       {
 597         // Show focus indicator
 598         mIsFocusIndicatorEnabled = true;
 599       }
 600       else
 601       {
 602         // Move the focus towards down
 603         MoveFocus(Toolkit::Control::Down);
 604       }
 605
 606       isFocusStartableKey = true;
 607     }
 608     else if (keyName == "Tab" && !isAccessibilityEnabled)
 609     {
 610       if(!mIsFocusIndicatorEnabled)
 611       {
 612         // Show focus indicator
 613         mIsFocusIndicatorEnabled = true;
 614       }
 615       else
 616       {
 617         // "Tab" key changes the focus group in the forward direction and
 618         // "Shift-Tab" key changes it in the backward direction.
 619         DoMoveFocusToNextFocusGroup(!event.IsShiftModifier());
 620       }
 621
 622       isFocusStartableKey = true;
 623     }
 624     else if (keyName == "space" && !isAccessibilityEnabled)
 625     {
 626       if(!mIsFocusIndicatorEnabled)
 627       {
 628         // Show focus indicator
 629         mIsFocusIndicatorEnabled = true;
 630       }
 631
 632       isFocusStartableKey = true;
 633     }
 634     else if (keyName == "" && !isAccessibilityEnabled)
 635     {
 636       // Check the fake key event for evas-plugin case
 637       if(!mIsFocusIndicatorEnabled)
 638       {
 639         // Show focus indicator
 640         mIsFocusIndicatorEnabled = true;
 641       }
 642
 643       isFocusStartableKey = true;
 644     }
 645     else if (keyName == "Backspace" && !isAccessibilityEnabled)
 646     {
 647       // Emit signal to go back to the previous view???
 648     }
 649   }
 650   else if(event.state == KeyEvent::Up)
 651   {
 652     if (keyName == "Return")
 653     {
 654       if(!mIsFocusIndicatorEnabled && !isAccessibilityEnabled)
 655       {
 656         // Show focus indicator
 657         mIsFocusIndicatorEnabled = true;
 658       }
 659       else
 660       {
 661         // Activate the focused actor
 662         Actor actor;
 663         if(!isAccessibilityEnabled)
 664         {
 665           actor = GetCurrentFocusActor();
 666         }
 667         else
 668         {
 669           actor = accessibilityFocusManager.GetCurrentFocusActor();
 670         }
 671
 672         if(actor)
 673         {
 674           DoActivate(actor);
 675         }
 676       }
 677
 678       isFocusStartableKey = true;
 679     }
 680   }
 681
 682   if(isFocusStartableKey && mIsFocusIndicatorEnabled && !isAccessibilityEnabled)
 683   {
 684     Actor actor = GetCurrentFocusActor();
 685     if( !actor )
 686     {
 687       // No actor is focused but keyboard focus is activated by the key press
 688       // Let's try to move the initial focus
 689       MoveFocus(Toolkit::Control::Right);
 690     }
 691     else if(mFocusIndicatorActor)
 692     {
 693       // Make sure the focused actor is highlighted
 694       actor.Add(mFocusIndicatorActor);
 695     }
 696   }
 697 }
 698
 699 void KeyboardFocusManager::OnTouched(const TouchEvent& touchEvent)
 700 {
 701   // Clear the focus when user touch the screen
 702   ClearFocus();
 703 }
 704
 705 Toolkit::KeyboardFocusManager::PreFocusChangeSignalType& KeyboardFocusManager::PreFocusChangeSignal()
 706 {
 707   return mPreFocusChangeSignal;
 708 }
 709
 710 Toolkit::KeyboardFocusManager::FocusChangedSignalType& KeyboardFocusManager::FocusChangedSignal()
 711 {
 712   return mFocusChangedSignal;
 713 }
 714
 715 Toolkit::KeyboardFocusManager::FocusGroupChangedSignalType& KeyboardFocusManager::FocusGroupChangedSignal()
 716 {
 717   return mFocusGroupChangedSignal;
 718 }
 719
 720 Toolkit::KeyboardFocusManager::FocusedActorActivatedSignalType& KeyboardFocusManager::FocusedActorActivatedSignal()
 721 {
 722   return mFocusedActorActivatedSignal;
 723 }
 724
 725 bool KeyboardFocusManager::DoConnectSignal( BaseObject* object, ConnectionTrackerInterface* tracker, const std::string& signalName, FunctorDelegate* functor )
 726 {
 727   Dali::BaseHandle handle( object );
 728
 729   bool connected( true );
 730   KeyboardFocusManager* manager = dynamic_cast<KeyboardFocusManager*>( object );
 731
 732   if( 0 == strcmp( signalName.c_str(), SIGNAL_PRE_FOCUS_CHANGE ) )
 733   {
 734     manager->PreFocusChangeSignal().Connect( tracker, functor );
 735   }
 736   if( 0 == strcmp( signalName.c_str(), SIGNAL_FOCUS_CHANGED ) )
 737   {
 738     manager->FocusChangedSignal().Connect( tracker, functor );
 739   }
 740   if( 0 == strcmp( signalName.c_str(), SIGNAL_FOCUS_GROUP_CHANGED ) )
 741   {
 742     manager->FocusGroupChangedSignal().Connect( tracker, functor );
 743   }
 744   else if( 0 == strcmp( signalName.c_str(), SIGNAL_FOCUSED_ACTOR_ACTIVATED ) )
 745   {
 746     manager->FocusedActorActivatedSignal().Connect( tracker, functor );
 747   }
 748   else
 749   {
 750     // signalName does not match any signal
 751     connected = false;
 752   }
 753
 754   return connected;
 755 }
 756
 757 } // namespace Internal
 758
 759 } // namespace Toolkit
 760
 761 } // namespace Dali