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   focusIndicator.SetSizeMode( SIZE_EQUAL_TO_PARENT );
 472
 473   SetFocusIndicatorActor(focusIndicator);
 474 }
 475
 476 void KeyboardFocusManager::OnPhysicalKeyboardStatusChanged(PhysicalKeyboard keyboard)
 477 {
 478   mIsKeyboardFocusEnabled = keyboard.IsAttached();
 479
 480   if(mIsKeyboardFocusEnabled)
 481   {
 482     // Show indicator when keyboard focus turned on if there is focused actor.
 483     Actor actor = GetCurrentFocusActor();
 484     if(actor)
 485     {
 486       if(mFocusIndicatorActor)
 487       {
 488         actor.Add(mFocusIndicatorActor);
 489       }
 490     }
 491     mIsFocusIndicatorEnabled = true;
 492   }
 493   else
 494   {
 495     // Hide indicator when keyboard focus turned off
 496     Actor actor = GetCurrentFocusActor();
 497     if(actor)
 498     {
 499       actor.Remove(mFocusIndicatorActor);
 500     }
 501     mIsFocusIndicatorEnabled = false;
 502   }
 503 }
 504
 505 void KeyboardFocusManager::OnKeyEvent(const KeyEvent& event)
 506 {
 507   if(!mIsKeyboardFocusEnabled)
 508   {
 509     return;
 510   }
 511
 512   AccessibilityManager accessibilityManager = AccessibilityManager::Get();
 513   bool isAccessibilityEnabled = accessibilityManager.IsEnabled();
 514
 515   Toolkit::FocusManager accessibilityFocusManager = Toolkit::FocusManager::Get();
 516
 517   std::string keyName = event.keyPressedName;
 518
 519   bool isFocusStartableKey = false;
 520
 521   if(event.state == KeyEvent::Down)
 522   {
 523     if (keyName == "Left")
 524     {
 525       if(!isAccessibilityEnabled)
 526       {
 527         if(!mIsFocusIndicatorEnabled)
 528         {
 529           // Show focus indicator
 530           mIsFocusIndicatorEnabled = true;
 531         }
 532         else
 533         {
 534           // Move the focus towards left
 535           MoveFocus(Toolkit::Control::Left);
 536         }
 537
 538         isFocusStartableKey = true;
 539       }
 540       else
 541       {
 542         // Move the accessibility focus backward
 543         accessibilityFocusManager.MoveFocusBackward();
 544       }
 545     }
 546     else if (keyName == "Right")
 547     {
 548       if(!isAccessibilityEnabled)
 549       {
 550         if(!mIsFocusIndicatorEnabled)
 551         {
 552           // Show focus indicator
 553           mIsFocusIndicatorEnabled = true;
 554         }
 555         else
 556         {
 557           // Move the focus towards right
 558           MoveFocus(Toolkit::Control::Right);
 559         }
 560       }
 561       else
 562       {
 563         // Move the accessibility focus forward
 564         accessibilityFocusManager.MoveFocusForward();
 565       }
 566
 567       isFocusStartableKey = true;
 568     }
 569     else if (keyName == "Up" && !isAccessibilityEnabled)
 570     {
 571       if(!mIsFocusIndicatorEnabled)
 572       {
 573         // Show focus indicator
 574         mIsFocusIndicatorEnabled = true;
 575       }
 576       else
 577       {
 578         // Move the focus towards up
 579         MoveFocus(Toolkit::Control::Up);
 580       }
 581
 582       isFocusStartableKey = true;
 583     }
 584     else if (keyName == "Down" && !isAccessibilityEnabled)
 585     {
 586       if(!mIsFocusIndicatorEnabled)
 587       {
 588         // Show focus indicator
 589         mIsFocusIndicatorEnabled = true;
 590       }
 591       else
 592       {
 593         // Move the focus towards down
 594         MoveFocus(Toolkit::Control::Down);
 595       }
 596
 597       isFocusStartableKey = true;
 598     }
 599     else if (keyName == "Tab" && !isAccessibilityEnabled)
 600     {
 601       if(!mIsFocusIndicatorEnabled)
 602       {
 603         // Show focus indicator
 604         mIsFocusIndicatorEnabled = true;
 605       }
 606       else
 607       {
 608         // "Tab" key changes the focus group in the forward direction and
 609         // "Shift-Tab" key changes it in the backward direction.
 610         DoMoveFocusToNextFocusGroup(!event.IsShiftModifier());
 611       }
 612
 613       isFocusStartableKey = true;
 614     }
 615     else if (keyName == "space" && !isAccessibilityEnabled)
 616     {
 617       if(!mIsFocusIndicatorEnabled)
 618       {
 619         // Show focus indicator
 620         mIsFocusIndicatorEnabled = true;
 621       }
 622
 623       isFocusStartableKey = true;
 624     }
 625     else if (keyName == "" && !isAccessibilityEnabled)
 626     {
 627       // Check the fake key event for evas-plugin case
 628       if(!mIsFocusIndicatorEnabled)
 629       {
 630         // Show focus indicator
 631         mIsFocusIndicatorEnabled = true;
 632       }
 633
 634       isFocusStartableKey = true;
 635     }
 636     else if (keyName == "Backspace" && !isAccessibilityEnabled)
 637     {
 638       // Emit signal to go back to the previous view???
 639     }
 640   }
 641   else if(event.state == KeyEvent::Up)
 642   {
 643     if (keyName == "Return")
 644     {
 645       if(!mIsFocusIndicatorEnabled && !isAccessibilityEnabled)
 646       {
 647         // Show focus indicator
 648         mIsFocusIndicatorEnabled = true;
 649       }
 650       else
 651       {
 652         // Activate the focused actor
 653         Actor actor;
 654         if(!isAccessibilityEnabled)
 655         {
 656           actor = GetCurrentFocusActor();
 657         }
 658         else
 659         {
 660           actor = accessibilityFocusManager.GetCurrentFocusActor();
 661         }
 662
 663         if(actor)
 664         {
 665           DoActivate(actor);
 666         }
 667       }
 668
 669       isFocusStartableKey = true;
 670     }
 671   }
 672
 673   if(isFocusStartableKey && mIsFocusIndicatorEnabled && !isAccessibilityEnabled)
 674   {
 675     Actor actor = GetCurrentFocusActor();
 676     if( !actor )
 677     {
 678       // No actor is focused but keyboard focus is activated by the key press
 679       // Let's try to move the initial focus
 680       MoveFocus(Toolkit::Control::Right);
 681     }
 682     else if(mFocusIndicatorActor)
 683     {
 684       // Make sure the focused actor is highlighted
 685       actor.Add(mFocusIndicatorActor);
 686     }
 687   }
 688 }
 689
 690 void KeyboardFocusManager::OnTouched(const TouchEvent& touchEvent)
 691 {
 692   // Clear the focus when user touch the screen
 693   ClearFocus();
 694 }
 695
 696 Toolkit::KeyboardFocusManager::PreFocusChangeSignalType& KeyboardFocusManager::PreFocusChangeSignal()
 697 {
 698   return mPreFocusChangeSignal;
 699 }
 700
 701 Toolkit::KeyboardFocusManager::FocusChangedSignalType& KeyboardFocusManager::FocusChangedSignal()
 702 {
 703   return mFocusChangedSignal;
 704 }
 705
 706 Toolkit::KeyboardFocusManager::FocusGroupChangedSignalType& KeyboardFocusManager::FocusGroupChangedSignal()
 707 {
 708   return mFocusGroupChangedSignal;
 709 }
 710
 711 Toolkit::KeyboardFocusManager::FocusedActorActivatedSignalType& KeyboardFocusManager::FocusedActorActivatedSignal()
 712 {
 713   return mFocusedActorActivatedSignal;
 714 }
 715
 716 bool KeyboardFocusManager::DoConnectSignal( BaseObject* object, ConnectionTrackerInterface* tracker, const std::string& signalName, FunctorDelegate* functor )
 717 {
 718   Dali::BaseHandle handle( object );
 719
 720   bool connected( true );
 721   KeyboardFocusManager* manager = dynamic_cast<KeyboardFocusManager*>(object);
 722
 723   if( Dali::Toolkit::KeyboardFocusManager::SIGNAL_PRE_FOCUS_CHANGE == signalName )
 724   {
 725     manager->PreFocusChangeSignal().Connect( tracker, functor );
 726   }
 727   if( Dali::Toolkit::KeyboardFocusManager::SIGNAL_FOCUS_CHANGED == signalName )
 728   {
 729     manager->FocusChangedSignal().Connect( tracker, functor );
 730   }
 731   if( Dali::Toolkit::KeyboardFocusManager::SIGNAL_FOCUS_GROUP_CHANGED == signalName )
 732   {
 733     manager->FocusGroupChangedSignal().Connect( tracker, functor );
 734   }
 735   else if( Dali::Toolkit::KeyboardFocusManager::SIGNAL_FOCUSED_ACTOR_ACTIVATED== signalName )
 736   {
 737     manager->FocusedActorActivatedSignal().Connect( tracker, functor );
 738   }
 739   else
 740   {
 741     // signalName does not match any signal
 742     connected = false;
 743   }
 744
 745   return connected;
 746 }
 747
 748 } // namespace Internal
 749
 750 } // namespace Toolkit
 751
 752 } // namespace Dali