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/public-api/adaptor-framework/accessibility-manager.h>
  25 #include <dali/public-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/object/type-registry.h>
  30 #include <dali/public-api/object/type-registry-helper.h>
  31 #include <dali/public-api/images/resource-image.h>
  32 #include <dali/integration-api/debug.h>
  33
  34 // INTERNAL INCLUDES
  35 #include <dali-toolkit/public-api/controls/control.h>
  36 #include <dali-toolkit/public-api/controls/control-impl.h>
  37 #include <dali-toolkit/public-api/focus-manager/focus-manager.h>
  38 #include <dali-toolkit/public-api/focus-manager/keyinput-focus-manager.h>
  39
  40 namespace Dali
  41 {
  42
  43 namespace Toolkit
  44 {
  45
  46 namespace Internal
  47 {
  48
  49 namespace // Unnamed namespace
  50 {
  51
  52 #if defined(DEBUG_ENABLED)
  53 Debug::Filter* gLogFilter = Debug::Filter::New(Debug::NoLogging, false, "LOG_KEYBOARD_FOCUS_MANAGER");
  54 #endif
  55
  56 const char* const IS_FOCUS_GROUP_PROPERTY_NAME = "is-keyboard-focus-group"; // This property will be replaced by a flag in Control.
  57
  58 const char* const FOCUS_BORDER_IMAGE_PATH = DALI_IMAGE_DIR "keyboard_focus.png";
  59 const Vector4 FOCUS_BORDER_IMAGE_BORDER = Vector4(7.0f, 7.0f, 7.0f, 7.0f);
  60
  61 BaseHandle Create()
  62 {
  63   BaseHandle handle = KeyboardFocusManager::Get();
  64
  65   if ( !handle )
  66   {
  67     SingletonService singletonService( SingletonService::Get() );
  68     if ( singletonService )
  69     {
  70       Toolkit::KeyboardFocusManager manager = Toolkit::KeyboardFocusManager( new Internal::KeyboardFocusManager() );
  71       singletonService.Register( typeid( manager ), manager );
  72       handle = manager;
  73     }
  74   }
  75
  76   return handle;
  77 }
  78
  79 DALI_TYPE_REGISTRATION_BEGIN_CREATE( Toolkit::KeyboardFocusManager, Dali::BaseHandle, Create, true )
  80
  81 DALI_SIGNAL_REGISTRATION( KeyboardFocusManager, "keyboard-pre-focus-change",        SIGNAL_PRE_FOCUS_CHANGE        )
  82 DALI_SIGNAL_REGISTRATION( KeyboardFocusManager, "keyboard-focus-changed",           SIGNAL_FOCUS_CHANGED           )
  83 DALI_SIGNAL_REGISTRATION( KeyboardFocusManager, "keyboard-focus-group-changed",     SIGNAL_FOCUS_GROUP_CHANGED     )
  84 DALI_SIGNAL_REGISTRATION( KeyboardFocusManager, "keyboard-focused-actor-activated", SIGNAL_FOCUSED_ACTOR_ACTIVATED )
  85
  86 DALI_TYPE_REGISTRATION_END()
  87
  88 } // unnamed namespace
  89
  90 Toolkit::KeyboardFocusManager KeyboardFocusManager::Get()
  91 {
  92   Toolkit::KeyboardFocusManager manager;
  93
  94   SingletonService singletonService( SingletonService::Get() );
  95   if ( singletonService )
  96   {
  97     // Check whether the keyboard focus manager is already created
  98     Dali::BaseHandle handle = singletonService.GetSingleton( typeid( Toolkit::KeyboardFocusManager ) );
  99     if(handle)
 100     {
 101       // If so, downcast the handle of singleton to keyboard focus manager
 102       manager = Toolkit::KeyboardFocusManager( dynamic_cast< KeyboardFocusManager* >( handle.GetObjectPtr() ) );
 103     }
 104   }
 105
 106   return manager;
 107 }
 108
 109 KeyboardFocusManager::KeyboardFocusManager()
 110 : mCurrentFocusActor(0),
 111   mFocusIndicatorActor(Actor()),
 112   mFocusGroupLoopEnabled(false),
 113   mIsKeyboardFocusEnabled(false),
 114   mIsFocusIndicatorEnabled(false),
 115   mIsWaitingKeyboardFocusChangeCommit(false),
 116   mSlotDelegate(this)
 117 {
 118   CreateDefaultFocusIndicatorActor();
 119
 120   OnPhysicalKeyboardStatusChanged(PhysicalKeyboard::Get());
 121
 122   Toolkit::KeyInputFocusManager::Get().UnhandledKeyEventSignal().Connect(mSlotDelegate, &KeyboardFocusManager::OnKeyEvent);
 123   Stage::GetCurrent().TouchedSignal().Connect(mSlotDelegate, &KeyboardFocusManager::OnTouched);
 124   PhysicalKeyboard::Get().StatusChangedSignal().Connect(mSlotDelegate, &KeyboardFocusManager::OnPhysicalKeyboardStatusChanged);
 125 }
 126
 127 KeyboardFocusManager::~KeyboardFocusManager()
 128 {
 129 }
 130
 131 bool KeyboardFocusManager::SetCurrentFocusActor(Actor actor)
 132 {
 133   DALI_ASSERT_DEBUG( !mIsWaitingKeyboardFocusChangeCommit && "Calling this function in the PreFocusChangeSignal callback?" );
 134
 135   if(actor)
 136   {
 137     return DoSetCurrentFocusActor(actor.GetId());
 138   }
 139
 140   return false;
 141 }
 142
 143 bool KeyboardFocusManager::DoSetCurrentFocusActor(const unsigned int actorID)
 144 {
 145   Actor rootActor = Stage::GetCurrent().GetRootLayer();
 146   Actor actor = rootActor.FindChildById(actorID);
 147
 148   // Check whether the actor is in the stage
 149   if(actor)
 150   {
 151     // Set the focus only when the actor is keyboard focusable
 152     if(actor.IsKeyboardFocusable())
 153     {
 154       // Draw the focus indicator upon the focused actor
 155       if(mIsFocusIndicatorEnabled && 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       // Move the accessibility focus to the same actor
 172 //      Toolkit::FocusManager focusManager = Toolkit::FocusManager::Get();
 173 //      focusManager.SetCurrentFocusActor(actor);
 174
 175       DALI_LOG_INFO( gLogFilter, Debug::General, "[%s:%d] SUCCEED\n", __FUNCTION__, __LINE__);
 176       return true;
 177     }
 178   }
 179
 180   DALI_LOG_WARNING("[%s:%d] FAILED\n", __FUNCTION__, __LINE__);
 181   return false;
 182 }
 183
 184 Actor KeyboardFocusManager::GetCurrentFocusActor()
 185 {
 186   Actor rootActor = Stage::GetCurrent().GetRootLayer();
 187   return rootActor.FindChildById(mCurrentFocusActor);
 188 }
 189
 190 Actor KeyboardFocusManager::GetCurrentFocusGroup()
 191 {
 192   return GetFocusGroup(GetCurrentFocusActor());
 193 }
 194
 195 bool KeyboardFocusManager::IsLayoutControl(Actor actor) const
 196 {
 197   Toolkit::Control control = Toolkit::Control::DownCast(actor);
 198   return control && control.GetImplementation().IsKeyboardNavigationSupported();
 199 }
 200
 201 Toolkit::Control KeyboardFocusManager::GetParentLayoutControl(Actor actor) const
 202 {
 203   // Get the actor's parent layout control that supports two dimensional keyboard navigation
 204   Actor rootActor = Stage::GetCurrent().GetRootLayer();
 205   Actor parent;
 206   if(actor)
 207   {
 208     parent = actor.GetParent();
 209   }
 210
 211   while( parent && !IsLayoutControl(parent) && parent != rootActor )
 212   {
 213     parent = parent.GetParent();
 214   }
 215
 216   return Toolkit::Control::DownCast(parent);
 217 }
 218
 219 bool KeyboardFocusManager::MoveFocus(Toolkit::Control::KeyboardFocusNavigationDirection direction)
 220 {
 221   Actor currentFocusActor = GetCurrentFocusActor();
 222
 223   bool succeed = false;
 224
 225   // Go through the actor's hierarchy until we find a layout control that knows how to move the focus
 226   Toolkit::Control parentLayoutControl = GetParentLayoutControl(currentFocusActor);
 227   while(parentLayoutControl && !succeed)
 228   {
 229     succeed = DoMoveFocusWithinLayoutControl(parentLayoutControl, currentFocusActor, direction);
 230     parentLayoutControl = GetParentLayoutControl(parentLayoutControl);
 231   }
 232
 233   if(!succeed && !mPreFocusChangeSignal.Empty())
 234   {
 235     // Don't know how to move the focus further. The application needs to tell us which actor to move the focus to
 236     mIsWaitingKeyboardFocusChangeCommit = true;
 237     Actor nextFocusableActor = mPreFocusChangeSignal.Emit(currentFocusActor, Actor(), direction);
 238     mIsWaitingKeyboardFocusChangeCommit = false;
 239
 240     if ( nextFocusableActor && nextFocusableActor.IsKeyboardFocusable() )
 241     {
 242       // Whether the next focusable actor is a layout control
 243       if(IsLayoutControl(nextFocusableActor))
 244       {
 245         // If so, move the focus inside it.
 246         Toolkit::Control layoutControl = Toolkit::Control::DownCast(nextFocusableActor);
 247         succeed = DoMoveFocusWithinLayoutControl(layoutControl, currentFocusActor, direction);
 248       }
 249       else
 250       {
 251         // Otherwise, just set focus to the next focusable actor
 252         succeed = SetCurrentFocusActor(nextFocusableActor);
 253       }
 254     }
 255   }
 256
 257   return succeed;
 258 }
 259
 260 bool KeyboardFocusManager::DoMoveFocusWithinLayoutControl(Toolkit::Control control, Actor actor, Toolkit::Control::KeyboardFocusNavigationDirection direction)
 261 {
 262   // Ask the control for the next actor to focus
 263   Actor nextFocusableActor = control.GetImplementation().GetNextKeyboardFocusableActor(actor, direction, mFocusGroupLoopEnabled);
 264   if(nextFocusableActor)
 265   {
 266     if(!nextFocusableActor.IsKeyboardFocusable())
 267     {
 268       // If the actor is not focusable, ask the same layout control for the next actor to focus
 269       return DoMoveFocusWithinLayoutControl(control, nextFocusableActor, direction);
 270     }
 271     else
 272     {
 273       Actor currentFocusActor = GetCurrentFocusActor();
 274       Actor committedFocusActor = nextFocusableActor;
 275
 276       // We will try to move the focus to the actor. Emit a signal to notify the proposed actor to focus
 277       // Signal handler can check the proposed actor and return a different actor if it wishes.
 278       if( !mPreFocusChangeSignal.Empty() )
 279       {
 280         mIsWaitingKeyboardFocusChangeCommit = true;
 281         committedFocusActor = mPreFocusChangeSignal.Emit(currentFocusActor, nextFocusableActor, direction);
 282         mIsWaitingKeyboardFocusChangeCommit = false;
 283       }
 284
 285       if (committedFocusActor && committedFocusActor.IsKeyboardFocusable())
 286       {
 287         // Whether the commited focusable actor is a layout control
 288         if(IsLayoutControl(committedFocusActor))
 289         {
 290           // If so, move the focus inside it.
 291           Toolkit::Control layoutControl = Toolkit::Control::DownCast(committedFocusActor);
 292           return DoMoveFocusWithinLayoutControl(layoutControl, currentFocusActor, direction);
 293         }
 294         else
 295         {
 296           // Otherwise, just set focus to the next focusable actor
 297           if(committedFocusActor == nextFocusableActor)
 298           {
 299             // If the application hasn't changed our proposed actor, we informs the layout control we will
 300             // move the focus to what the control returns. The control might wish to perform some actions
 301             // before the focus is actually moved.
 302             control.GetImplementation().OnKeyboardFocusChangeCommitted(committedFocusActor);
 303           }
 304
 305           return SetCurrentFocusActor(committedFocusActor);
 306         }
 307       }
 308       else
 309       {
 310         return false;
 311       }
 312     }
 313   }
 314   else
 315   {
 316     // No more actor can be focused in the given direction within the same layout control.
 317     return false;
 318   }
 319 }
 320
 321 bool KeyboardFocusManager::DoMoveFocusToNextFocusGroup(bool forward)
 322 {
 323   bool succeed = false;
 324
 325   // Get the parent layout control of the current focus group
 326   Toolkit::Control parentLayoutControl = GetParentLayoutControl(GetCurrentFocusGroup());
 327
 328   while(parentLayoutControl && !succeed)
 329   {
 330     // If the current focus group has a parent layout control, we can probably automatically
 331     // move the focus to the next focus group in the forward or backward direction.
 332     Toolkit::Control::KeyboardFocusNavigationDirection direction = forward ? Toolkit::Control::Right : Toolkit::Control::Left;
 333     succeed = DoMoveFocusWithinLayoutControl(parentLayoutControl, GetCurrentFocusActor(), direction);
 334     parentLayoutControl = GetParentLayoutControl(parentLayoutControl);
 335   }
 336
 337   if(!mFocusGroupChangedSignal.Empty())
 338   {
 339     // Emit a focus group changed signal. The applicaton can move the focus to a new focus group
 340     mFocusGroupChangedSignal.Emit(GetCurrentFocusActor(), forward);
 341   }
 342
 343   return succeed;
 344 }
 345
 346 void KeyboardFocusManager::DoActivate(Actor actor)
 347 {
 348   if(actor)
 349   {
 350     Toolkit::Control control = Toolkit::Control::DownCast(actor);
 351     if(control)
 352     {
 353       // Notify the control that it is activated
 354       control.GetImplementation().Activate();
 355     }
 356
 357     // Send notification for the activation of focused actor
 358     if( !mFocusedActorActivatedSignal.Empty() )
 359     {
 360       mFocusedActorActivatedSignal.Emit(actor);
 361     }
 362   }
 363 }
 364
 365 void KeyboardFocusManager::ClearFocus()
 366 {
 367   Actor actor = GetCurrentFocusActor();
 368   if(actor)
 369   {
 370     if(mFocusIndicatorActor)
 371     {
 372       actor.Remove(mFocusIndicatorActor);
 373     }
 374
 375     // Send notification for the change of focus actor
 376     if( !mFocusChangedSignal.Empty() )
 377     {
 378       mFocusChangedSignal.Emit(actor, Actor());
 379     }
 380   }
 381
 382   mCurrentFocusActor = 0;
 383   mIsFocusIndicatorEnabled = false;
 384 }
 385
 386 void KeyboardFocusManager::SetFocusGroupLoop(bool enabled)
 387 {
 388   mFocusGroupLoopEnabled = enabled;
 389 }
 390
 391 bool KeyboardFocusManager::GetFocusGroupLoop() const
 392 {
 393   return mFocusGroupLoopEnabled;
 394 }
 395
 396 void KeyboardFocusManager::SetAsFocusGroup(Actor actor, bool isFocusGroup)
 397 {
 398   if(actor)
 399   {
 400     // Create focus group property if not already created.
 401     Property::Index propertyIsFocusGroup = actor.GetPropertyIndex(IS_FOCUS_GROUP_PROPERTY_NAME);
 402     if(propertyIsFocusGroup == Property::INVALID_INDEX)
 403     {
 404       actor.RegisterProperty(IS_FOCUS_GROUP_PROPERTY_NAME, isFocusGroup);
 405     }
 406     else
 407     {
 408       actor.SetProperty(propertyIsFocusGroup, isFocusGroup);
 409     }
 410   }
 411 }
 412
 413 bool KeyboardFocusManager::IsFocusGroup(Actor actor) const
 414 {
 415   // Check whether the actor is a focus group
 416   bool isFocusGroup = false;
 417
 418   if(actor)
 419   {
 420     Property::Index propertyIsFocusGroup = actor.GetPropertyIndex(IS_FOCUS_GROUP_PROPERTY_NAME);
 421     if(propertyIsFocusGroup != Property::INVALID_INDEX)
 422     {
 423       isFocusGroup = actor.GetProperty<bool>(propertyIsFocusGroup);
 424     }
 425   }
 426
 427   return isFocusGroup;
 428 }
 429
 430 Actor KeyboardFocusManager::GetFocusGroup(Actor actor)
 431 {
 432   // Go through the actor's hierarchy to check which focus group the actor belongs to
 433   while (actor && !IsFocusGroup(actor))
 434   {
 435     actor = actor.GetParent();
 436   }
 437
 438   return actor;
 439 }
 440
 441 void KeyboardFocusManager::SetFocusIndicatorActor(Actor indicator)
 442 {
 443   if(mFocusIndicatorActor != indicator)
 444   {
 445     Actor currentFocusActor = GetCurrentFocusActor();
 446     if(currentFocusActor)
 447     {
 448       // The new focus indicator should be added to the current focused actor immediately
 449       if(mFocusIndicatorActor)
 450       {
 451         currentFocusActor.Remove(mFocusIndicatorActor);
 452       }
 453
 454       if(indicator)
 455       {
 456         currentFocusActor.Add(indicator);
 457       }
 458     }
 459
 460     mFocusIndicatorActor = indicator;
 461   }
 462 }
 463
 464 Actor KeyboardFocusManager::GetFocusIndicatorActor()
 465 {
 466   return mFocusIndicatorActor;
 467 }
 468
 469 void KeyboardFocusManager::CreateDefaultFocusIndicatorActor()
 470 {
 471   // Create a focus indicator actor shared by all the keyboard focusable actors
 472   Image borderImage = ResourceImage::New(FOCUS_BORDER_IMAGE_PATH);
 473
 474   ImageActor focusIndicator = ImageActor::New(borderImage);
 475   focusIndicator.SetPositionInheritanceMode( Dali::USE_PARENT_POSITION_PLUS_LOCAL_POSITION );
 476   focusIndicator.SetStyle( ImageActor::STYLE_NINE_PATCH );
 477   focusIndicator.SetNinePatchBorder(FOCUS_BORDER_IMAGE_BORDER);
 478   focusIndicator.SetPosition(Vector3(0.0f, 0.0f, 1.0f));
 479
 480   // Apply size constraint to the focus indicator
 481   focusIndicator.SetResizePolicy( ResizePolicy::FILL_TO_PARENT, Dimension::ALL_DIMENSIONS );
 482
 483   SetFocusIndicatorActor(focusIndicator);
 484 }
 485
 486 void KeyboardFocusManager::OnPhysicalKeyboardStatusChanged(PhysicalKeyboard keyboard)
 487 {
 488   mIsKeyboardFocusEnabled = keyboard.IsAttached();
 489
 490   if(mIsKeyboardFocusEnabled)
 491   {
 492     // Show indicator when keyboard focus turned on if there is focused actor.
 493     Actor actor = GetCurrentFocusActor();
 494     if(actor)
 495     {
 496       if(mFocusIndicatorActor)
 497       {
 498         actor.Add(mFocusIndicatorActor);
 499       }
 500     }
 501     mIsFocusIndicatorEnabled = true;
 502   }
 503   else
 504   {
 505     // Hide indicator when keyboard focus turned off
 506     Actor actor = GetCurrentFocusActor();
 507     if(actor)
 508     {
 509       actor.Remove(mFocusIndicatorActor);
 510     }
 511     mIsFocusIndicatorEnabled = false;
 512   }
 513 }
 514
 515 void KeyboardFocusManager::OnKeyEvent(const KeyEvent& event)
 516 {
 517   if(!mIsKeyboardFocusEnabled)
 518   {
 519     return;
 520   }
 521
 522   AccessibilityManager accessibilityManager = AccessibilityManager::Get();
 523   bool isAccessibilityEnabled = accessibilityManager.IsEnabled();
 524
 525   Toolkit::FocusManager accessibilityFocusManager = Toolkit::FocusManager::Get();
 526
 527   std::string keyName = event.keyPressedName;
 528
 529   bool isFocusStartableKey = false;
 530
 531   if(event.state == KeyEvent::Down)
 532   {
 533     if (keyName == "Left")
 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 left
 545           MoveFocus(Toolkit::Control::Left);
 546         }
 547
 548         isFocusStartableKey = true;
 549       }
 550       else
 551       {
 552         // Move the accessibility focus backward
 553         accessibilityFocusManager.MoveFocusBackward();
 554       }
 555     }
 556     else if (keyName == "Right")
 557     {
 558       if(!isAccessibilityEnabled)
 559       {
 560         if(!mIsFocusIndicatorEnabled)
 561         {
 562           // Show focus indicator
 563           mIsFocusIndicatorEnabled = true;
 564         }
 565         else
 566         {
 567           // Move the focus towards right
 568           MoveFocus(Toolkit::Control::Right);
 569         }
 570       }
 571       else
 572       {
 573         // Move the accessibility focus forward
 574         accessibilityFocusManager.MoveFocusForward();
 575       }
 576
 577       isFocusStartableKey = true;
 578     }
 579     else if (keyName == "Up" && !isAccessibilityEnabled)
 580     {
 581       if(!mIsFocusIndicatorEnabled)
 582       {
 583         // Show focus indicator
 584         mIsFocusIndicatorEnabled = true;
 585       }
 586       else
 587       {
 588         // Move the focus towards up
 589         MoveFocus(Toolkit::Control::Up);
 590       }
 591
 592       isFocusStartableKey = true;
 593     }
 594     else if (keyName == "Down" && !isAccessibilityEnabled)
 595     {
 596       if(!mIsFocusIndicatorEnabled)
 597       {
 598         // Show focus indicator
 599         mIsFocusIndicatorEnabled = true;
 600       }
 601       else
 602       {
 603         // Move the focus towards down
 604         MoveFocus(Toolkit::Control::Down);
 605       }
 606
 607       isFocusStartableKey = true;
 608     }
 609     else if (keyName == "Tab" && !isAccessibilityEnabled)
 610     {
 611       if(!mIsFocusIndicatorEnabled)
 612       {
 613         // Show focus indicator
 614         mIsFocusIndicatorEnabled = true;
 615       }
 616       else
 617       {
 618         // "Tab" key changes the focus group in the forward direction and
 619         // "Shift-Tab" key changes it in the backward direction.
 620         DoMoveFocusToNextFocusGroup(!event.IsShiftModifier());
 621       }
 622
 623       isFocusStartableKey = true;
 624     }
 625     else if (keyName == "space" && !isAccessibilityEnabled)
 626     {
 627       if(!mIsFocusIndicatorEnabled)
 628       {
 629         // Show focus indicator
 630         mIsFocusIndicatorEnabled = true;
 631       }
 632
 633       isFocusStartableKey = true;
 634     }
 635     else if (keyName == "" && !isAccessibilityEnabled)
 636     {
 637       // Check the fake key event for evas-plugin case
 638       if(!mIsFocusIndicatorEnabled)
 639       {
 640         // Show focus indicator
 641         mIsFocusIndicatorEnabled = true;
 642       }
 643
 644       isFocusStartableKey = true;
 645     }
 646     else if (keyName == "Backspace" && !isAccessibilityEnabled)
 647     {
 648       // Emit signal to go back to the previous view???
 649     }
 650   }
 651   else if(event.state == KeyEvent::Up)
 652   {
 653     if (keyName == "Return")
 654     {
 655       if(!mIsFocusIndicatorEnabled && !isAccessibilityEnabled)
 656       {
 657         // Show focus indicator
 658         mIsFocusIndicatorEnabled = true;
 659       }
 660       else
 661       {
 662         // Activate the focused actor
 663         Actor actor;
 664         if(!isAccessibilityEnabled)
 665         {
 666           actor = GetCurrentFocusActor();
 667         }
 668         else
 669         {
 670           actor = accessibilityFocusManager.GetCurrentFocusActor();
 671         }
 672
 673         if(actor)
 674         {
 675           DoActivate(actor);
 676         }
 677       }
 678
 679       isFocusStartableKey = true;
 680     }
 681   }
 682
 683   if(isFocusStartableKey && mIsFocusIndicatorEnabled && !isAccessibilityEnabled)
 684   {
 685     Actor actor = GetCurrentFocusActor();
 686     if( !actor )
 687     {
 688       // No actor is focused but keyboard focus is activated by the key press
 689       // Let's try to move the initial focus
 690       MoveFocus(Toolkit::Control::Right);
 691     }
 692     else if(mFocusIndicatorActor)
 693     {
 694       // Make sure the focused actor is highlighted
 695       actor.Add(mFocusIndicatorActor);
 696     }
 697   }
 698 }
 699
 700 void KeyboardFocusManager::OnTouched(const TouchEvent& touchEvent)
 701 {
 702   // Clear the focus when user touch the screen
 703   ClearFocus();
 704 }
 705
 706 Toolkit::KeyboardFocusManager::PreFocusChangeSignalType& KeyboardFocusManager::PreFocusChangeSignal()
 707 {
 708   return mPreFocusChangeSignal;
 709 }
 710
 711 Toolkit::KeyboardFocusManager::FocusChangedSignalType& KeyboardFocusManager::FocusChangedSignal()
 712 {
 713   return mFocusChangedSignal;
 714 }
 715
 716 Toolkit::KeyboardFocusManager::FocusGroupChangedSignalType& KeyboardFocusManager::FocusGroupChangedSignal()
 717 {
 718   return mFocusGroupChangedSignal;
 719 }
 720
 721 Toolkit::KeyboardFocusManager::FocusedActorActivatedSignalType& KeyboardFocusManager::FocusedActorActivatedSignal()
 722 {
 723   return mFocusedActorActivatedSignal;
 724 }
 725
 726 bool KeyboardFocusManager::DoConnectSignal( BaseObject* object, ConnectionTrackerInterface* tracker, const std::string& signalName, FunctorDelegate* functor )
 727 {
 728   Dali::BaseHandle handle( object );
 729
 730   bool connected( true );
 731   KeyboardFocusManager* manager = dynamic_cast<KeyboardFocusManager*>( object );
 732
 733   if( 0 == strcmp( signalName.c_str(), SIGNAL_PRE_FOCUS_CHANGE ) )
 734   {
 735     manager->PreFocusChangeSignal().Connect( tracker, functor );
 736   }
 737   if( 0 == strcmp( signalName.c_str(), SIGNAL_FOCUS_CHANGED ) )
 738   {
 739     manager->FocusChangedSignal().Connect( tracker, functor );
 740   }
 741   if( 0 == strcmp( signalName.c_str(), SIGNAL_FOCUS_GROUP_CHANGED ) )
 742   {
 743     manager->FocusGroupChangedSignal().Connect( tracker, functor );
 744   }
 745   else if( 0 == strcmp( signalName.c_str(), SIGNAL_FOCUSED_ACTOR_ACTIVATED ) )
 746   {
 747     manager->FocusedActorActivatedSignal().Connect( tracker, functor );
 748   }
 749   else
 750   {
 751     // signalName does not match any signal
 752     connected = false;
 753   }
 754
 755   return connected;
 756 }
 757
 758 } // namespace Internal
 759
 760 } // namespace Toolkit
 761
 762 } // namespace Dali