dali-toolkit/internal/focus-manager/keyboard-focus-manager-impl.cpp

   1 /*
   2  * Copyright (c) 2016 Samsung Electronics Co., Ltd.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  *
  16  */
  17
  18 // CLASS HEADER
  19 #include "keyboard-focus-manager-impl.h"
  20
  21 // EXTERNAL INCLUDES
  22 #include <cstring> // for strcmp
  23 #include <dali/public-api/actors/layer.h>
  24 #include <dali/devel-api/adaptor-framework/accessibility-adaptor.h>
  25 #include <dali/devel-api/adaptor-framework/singleton-service.h>
  26 #include <dali/public-api/animation/constraints.h>
  27 #include <dali/public-api/common/stage.h>
  28 #include <dali/public-api/events/key-event.h>
  29 #include <dali/public-api/events/touch-data.h>
  30 #include <dali/public-api/object/type-registry.h>
  31 #include <dali/public-api/object/type-registry-helper.h>
  32 #include <dali/public-api/images/resource-image.h>
  33 #include <dali/integration-api/debug.h>
  34
  35 // INTERNAL INCLUDES
  36 #include <dali-toolkit/public-api/controls/control.h>
  37 #include <dali-toolkit/public-api/controls/control-impl.h>
  38 #include <dali-toolkit/public-api/controls/image-view/image-view.h>
  39 #include <dali-toolkit/public-api/accessibility-manager/accessibility-manager.h>
  40 #include <dali-toolkit/devel-api/focus-manager/keyinput-focus-manager.h>
  41
  42 namespace Dali
  43 {
  44
  45 namespace Toolkit
  46 {
  47
  48 namespace Internal
  49 {
  50
  51 namespace // Unnamed namespace
  52 {
  53
  54 #if defined(DEBUG_ENABLED)
  55 Debug::Filter* gLogFilter = Debug::Filter::New(Debug::NoLogging, false, "LOG_KEYBOARD_FOCUS_MANAGER");
  56 #endif
  57
  58 const char* const IS_FOCUS_GROUP_PROPERTY_NAME = "isKeyboardFocusGroup"; // This property will be replaced by a flag in Control.
  59
  60 const char* const FOCUS_BORDER_IMAGE_PATH = DALI_IMAGE_DIR "keyboard_focus.9.png";
  61
  62 BaseHandle Create()
  63 {
  64   BaseHandle handle = KeyboardFocusManager::Get();
  65
  66   if ( !handle )
  67   {
  68     SingletonService singletonService( SingletonService::Get() );
  69     if ( singletonService )
  70     {
  71       Toolkit::KeyboardFocusManager manager = Toolkit::KeyboardFocusManager( new Internal::KeyboardFocusManager() );
  72       singletonService.Register( typeid( manager ), manager );
  73       handle = manager;
  74     }
  75   }
  76
  77   return handle;
  78 }
  79
  80 DALI_TYPE_REGISTRATION_BEGIN_CREATE( Toolkit::KeyboardFocusManager, Dali::BaseHandle, Create, true )
  81
  82 DALI_SIGNAL_REGISTRATION( Toolkit, KeyboardFocusManager, "keyboardPreFocusChange",           SIGNAL_PRE_FOCUS_CHANGE )
  83 DALI_SIGNAL_REGISTRATION( Toolkit, KeyboardFocusManager, "keyboardFocusChanged",             SIGNAL_FOCUS_CHANGED )
  84 DALI_SIGNAL_REGISTRATION( Toolkit, KeyboardFocusManager, "keyboardFocusGroupChanged",        SIGNAL_FOCUS_GROUP_CHANGED )
  85 DALI_SIGNAL_REGISTRATION( Toolkit, KeyboardFocusManager, "keyboardFocusedActorEnterKey",     SIGNAL_FOCUSED_ACTOR_ENTER_KEY )
  86
  87 DALI_TYPE_REGISTRATION_END()
  88
  89 } // unnamed namespace
  90
  91 Toolkit::KeyboardFocusManager KeyboardFocusManager::Get()
  92 {
  93   Toolkit::KeyboardFocusManager manager;
  94
  95   SingletonService singletonService( SingletonService::Get() );
  96   if ( singletonService )
  97   {
  98     // Check whether the keyboard focus manager is already created
  99     Dali::BaseHandle handle = singletonService.GetSingleton( typeid( Toolkit::KeyboardFocusManager ) );
 100     if(handle)
 101     {
 102       // If so, downcast the handle of singleton to keyboard focus manager
 103       manager = Toolkit::KeyboardFocusManager( dynamic_cast< KeyboardFocusManager* >( handle.GetObjectPtr() ) );
 104     }
 105   }
 106
 107   return manager;
 108 }
 109
 110 KeyboardFocusManager::KeyboardFocusManager()
 111 : mCurrentFocusActor(0),
 112   mFocusIndicatorActor(),
 113   mFocusGroupLoopEnabled(false),
 114   mIsKeyboardFocusEnabled(false),
 115   mIsFocusIndicatorEnabled(false),
 116   mIsWaitingKeyboardFocusChangeCommit(false),
 117   mSlotDelegate(this)
 118 {
 119   OnPhysicalKeyboardStatusChanged(PhysicalKeyboard::Get());
 120
 121   Toolkit::KeyInputFocusManager::Get().UnhandledKeyEventSignal().Connect(mSlotDelegate, &KeyboardFocusManager::OnKeyEvent);
 122   Stage::GetCurrent().TouchSignal().Connect( mSlotDelegate, &KeyboardFocusManager::OnTouch );
 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   bool success = false;
 147
 148   // Check whether the actor is in the stage and is keyboard focusable.
 149   if( actor && actor.IsKeyboardFocusable() )
 150   {
 151     mIsFocusIndicatorEnabled = true;
 152     // Draw the focus indicator upon the focused actor
 153     actor.Add( GetFocusIndicatorActor() );
 154
 155     // Send notification for the change of focus actor
 156     if( !mFocusChangedSignal.Empty() )
 157     {
 158       mFocusChangedSignal.Emit(GetCurrentFocusActor(), actor);
 159     }
 160
 161     DALI_LOG_INFO( gLogFilter, Debug::General, "[%s:%d] Focus Changed\n", __FUNCTION__, __LINE__);
 162
 163     // Save the current focused actor
 164     mCurrentFocusActor = actorID;
 165
 166     DALI_LOG_INFO( gLogFilter, Debug::General, "[%s:%d] SUCCEED\n", __FUNCTION__, __LINE__);
 167     success = true;
 168   }
 169   else
 170   {
 171     DALI_LOG_WARNING("[%s:%d] FAILED\n", __FUNCTION__, __LINE__);
 172   }
 173
 174   return success;
 175 }
 176
 177 Actor KeyboardFocusManager::GetCurrentFocusActor()
 178 {
 179   Actor rootActor = Stage::GetCurrent().GetRootLayer();
 180   return rootActor.FindChildById(mCurrentFocusActor);
 181 }
 182
 183 Actor KeyboardFocusManager::GetCurrentFocusGroup()
 184 {
 185   return GetFocusGroup(GetCurrentFocusActor());
 186 }
 187
 188 bool KeyboardFocusManager::IsLayoutControl(Actor actor) const
 189 {
 190   Toolkit::Control control = Toolkit::Control::DownCast(actor);
 191   return control && GetImplementation( control ).IsKeyboardNavigationSupported();
 192 }
 193
 194 Toolkit::Control KeyboardFocusManager::GetParentLayoutControl(Actor actor) const
 195 {
 196   // Get the actor's parent layout control that supports two dimensional keyboard navigation
 197   Actor rootActor = Stage::GetCurrent().GetRootLayer();
 198   Actor parent;
 199   if(actor)
 200   {
 201     parent = actor.GetParent();
 202   }
 203
 204   while( parent && !IsLayoutControl(parent) && parent != rootActor )
 205   {
 206     parent = parent.GetParent();
 207   }
 208
 209   return Toolkit::Control::DownCast(parent);
 210 }
 211
 212 bool KeyboardFocusManager::MoveFocus(Toolkit::Control::KeyboardFocus::Direction direction)
 213 {
 214   Actor currentFocusActor = GetCurrentFocusActor();
 215
 216   bool succeed = false;
 217
 218   // Go through the actor's hierarchy until we find a layout control that knows how to move the focus
 219   Toolkit::Control parentLayoutControl = GetParentLayoutControl(currentFocusActor);
 220   while(parentLayoutControl && !succeed)
 221   {
 222     succeed = DoMoveFocusWithinLayoutControl(parentLayoutControl, currentFocusActor, direction);
 223     parentLayoutControl = GetParentLayoutControl(parentLayoutControl);
 224   }
 225
 226   if(!succeed && !mPreFocusChangeSignal.Empty())
 227   {
 228     // Don't know how to move the focus further. The application needs to tell us which actor to move the focus to
 229     mIsWaitingKeyboardFocusChangeCommit = true;
 230     Actor nextFocusableActor = mPreFocusChangeSignal.Emit(currentFocusActor, Actor(), direction);
 231     mIsWaitingKeyboardFocusChangeCommit = false;
 232
 233     if ( nextFocusableActor && nextFocusableActor.IsKeyboardFocusable() )
 234     {
 235       // Whether the next focusable actor is a layout control
 236       if(IsLayoutControl(nextFocusableActor))
 237       {
 238         // If so, move the focus inside it.
 239         Toolkit::Control layoutControl = Toolkit::Control::DownCast(nextFocusableActor);
 240         succeed = DoMoveFocusWithinLayoutControl(layoutControl, currentFocusActor, direction);
 241       }
 242       else
 243       {
 244         // Otherwise, just set focus to the next focusable actor
 245         succeed = SetCurrentFocusActor(nextFocusableActor);
 246       }
 247     }
 248   }
 249
 250   return succeed;
 251 }
 252
 253 bool KeyboardFocusManager::DoMoveFocusWithinLayoutControl(Toolkit::Control control, Actor actor, Toolkit::Control::KeyboardFocus::Direction direction)
 254 {
 255   // Ask the control for the next actor to focus
 256   Actor nextFocusableActor = GetImplementation( control ).GetNextKeyboardFocusableActor(actor, direction, mFocusGroupLoopEnabled);
 257   if(nextFocusableActor)
 258   {
 259     if(!nextFocusableActor.IsKeyboardFocusable())
 260     {
 261       // If the actor is not focusable, ask the same layout control for the next actor to focus
 262       return DoMoveFocusWithinLayoutControl(control, nextFocusableActor, direction);
 263     }
 264     else
 265     {
 266       Actor currentFocusActor = GetCurrentFocusActor();
 267       Actor committedFocusActor = nextFocusableActor;
 268
 269       // We will try to move the focus to the actor. Emit a signal to notify the proposed actor to focus
 270       // Signal handler can check the proposed actor and return a different actor if it wishes.
 271       if( !mPreFocusChangeSignal.Empty() )
 272       {
 273         mIsWaitingKeyboardFocusChangeCommit = true;
 274         committedFocusActor = mPreFocusChangeSignal.Emit(currentFocusActor, nextFocusableActor, direction);
 275         mIsWaitingKeyboardFocusChangeCommit = false;
 276       }
 277
 278       if (committedFocusActor && committedFocusActor.IsKeyboardFocusable())
 279       {
 280         // Whether the commited focusable actor is a layout control
 281         if(IsLayoutControl(committedFocusActor))
 282         {
 283           // If so, move the focus inside it.
 284           Toolkit::Control layoutControl = Toolkit::Control::DownCast(committedFocusActor);
 285           return DoMoveFocusWithinLayoutControl(layoutControl, currentFocusActor, direction);
 286         }
 287         else
 288         {
 289           // Otherwise, just set focus to the next focusable actor
 290           if(committedFocusActor == nextFocusableActor)
 291           {
 292             // If the application hasn't changed our proposed actor, we informs the layout control we will
 293             // move the focus to what the control returns. The control might wish to perform some actions
 294             // before the focus is actually moved.
 295             GetImplementation( control ).OnKeyboardFocusChangeCommitted( committedFocusActor );
 296           }
 297
 298           return SetCurrentFocusActor(committedFocusActor);
 299         }
 300       }
 301       else
 302       {
 303         return false;
 304       }
 305     }
 306   }
 307   else
 308   {
 309     // No more actor can be focused in the given direction within the same layout control.
 310     return false;
 311   }
 312 }
 313
 314 bool KeyboardFocusManager::DoMoveFocusToNextFocusGroup(bool forward)
 315 {
 316   bool succeed = false;
 317
 318   // Get the parent layout control of the current focus group
 319   Toolkit::Control parentLayoutControl = GetParentLayoutControl(GetCurrentFocusGroup());
 320
 321   while(parentLayoutControl && !succeed)
 322   {
 323     // If the current focus group has a parent layout control, we can probably automatically
 324     // move the focus to the next focus group in the forward or backward direction.
 325     Toolkit::Control::KeyboardFocus::Direction direction = forward ? Toolkit::Control::KeyboardFocus::RIGHT : Toolkit::Control::KeyboardFocus::LEFT;
 326     succeed = DoMoveFocusWithinLayoutControl(parentLayoutControl, GetCurrentFocusActor(), direction);
 327     parentLayoutControl = GetParentLayoutControl(parentLayoutControl);
 328   }
 329
 330   if(!mFocusGroupChangedSignal.Empty())
 331   {
 332     // Emit a focus group changed signal. The applicaton can move the focus to a new focus group
 333     mFocusGroupChangedSignal.Emit(GetCurrentFocusActor(), forward);
 334   }
 335
 336   return succeed;
 337 }
 338
 339 void KeyboardFocusManager::DoKeyboardEnter(Actor actor)
 340 {
 341   if( actor )
 342   {
 343     Toolkit::Control control = Toolkit::Control::DownCast( actor );
 344     if( control )
 345     {
 346       // Notify the control that enter has been pressed on it.
 347       GetImplementation( control ).KeyboardEnter();
 348     }
 349
 350     // Send a notification for the actor.
 351     if( !mFocusedActorEnterKeySignal.Empty() )
 352     {
 353       mFocusedActorEnterKeySignal.Emit( actor );
 354     }
 355   }
 356 }
 357
 358 void KeyboardFocusManager::ClearFocus()
 359 {
 360   Actor actor = GetCurrentFocusActor();
 361   if(actor)
 362   {
 363     if(mFocusIndicatorActor)
 364     {
 365       actor.Remove(mFocusIndicatorActor);
 366     }
 367
 368     // Send notification for the change of focus actor
 369     if( !mFocusChangedSignal.Empty() )
 370     {
 371       mFocusChangedSignal.Emit(actor, Actor());
 372     }
 373   }
 374
 375   mCurrentFocusActor = 0;
 376   mIsFocusIndicatorEnabled = false;
 377 }
 378
 379 void KeyboardFocusManager::SetFocusGroupLoop(bool enabled)
 380 {
 381   mFocusGroupLoopEnabled = enabled;
 382 }
 383
 384 bool KeyboardFocusManager::GetFocusGroupLoop() const
 385 {
 386   return mFocusGroupLoopEnabled;
 387 }
 388
 389 void KeyboardFocusManager::SetAsFocusGroup(Actor actor, bool isFocusGroup)
 390 {
 391   if(actor)
 392   {
 393     // Create/Set focus group property.
 394     actor.RegisterProperty( IS_FOCUS_GROUP_PROPERTY_NAME, isFocusGroup, Property::READ_WRITE );
 395   }
 396 }
 397
 398 bool KeyboardFocusManager::IsFocusGroup(Actor actor) const
 399 {
 400   // Check whether the actor is a focus group
 401   bool isFocusGroup = false;
 402
 403   if(actor)
 404   {
 405     Property::Index propertyIsFocusGroup = actor.GetPropertyIndex(IS_FOCUS_GROUP_PROPERTY_NAME);
 406     if(propertyIsFocusGroup != Property::INVALID_INDEX)
 407     {
 408       isFocusGroup = actor.GetProperty<bool>(propertyIsFocusGroup);
 409     }
 410   }
 411
 412   return isFocusGroup;
 413 }
 414
 415 Actor KeyboardFocusManager::GetFocusGroup(Actor actor)
 416 {
 417   // Go through the actor's hierarchy to check which focus group the actor belongs to
 418   while (actor && !IsFocusGroup(actor))
 419   {
 420     actor = actor.GetParent();
 421   }
 422
 423   return actor;
 424 }
 425
 426 void KeyboardFocusManager::SetFocusIndicatorActor(Actor indicator)
 427 {
 428   if(mFocusIndicatorActor != indicator)
 429   {
 430     Actor currentFocusActor = GetCurrentFocusActor();
 431     if(currentFocusActor)
 432     {
 433       // The new focus indicator should be added to the current focused actor immediately
 434       if(mFocusIndicatorActor)
 435       {
 436         currentFocusActor.Remove(mFocusIndicatorActor);
 437       }
 438
 439       if(indicator)
 440       {
 441         currentFocusActor.Add(indicator);
 442       }
 443     }
 444
 445     mFocusIndicatorActor = indicator;
 446   }
 447 }
 448
 449 Actor KeyboardFocusManager::GetFocusIndicatorActor()
 450 {
 451   if( ! mFocusIndicatorActor )
 452   {
 453     // Create the default if it hasn't been set and one that's shared by all the keyboard focusable actors
 454     mFocusIndicatorActor = Toolkit::ImageView::New( FOCUS_BORDER_IMAGE_PATH );
 455     mFocusIndicatorActor.SetParentOrigin( ParentOrigin::CENTER );
 456
 457     // Apply size constraint to the focus indicator
 458     mFocusIndicatorActor.SetResizePolicy( ResizePolicy::FILL_TO_PARENT, Dimension::ALL_DIMENSIONS );
 459   }
 460
 461   return mFocusIndicatorActor;
 462 }
 463
 464 void KeyboardFocusManager::OnPhysicalKeyboardStatusChanged(PhysicalKeyboard keyboard)
 465 {
 466   mIsKeyboardFocusEnabled = keyboard.IsAttached();
 467
 468   if(mIsKeyboardFocusEnabled)
 469   {
 470     // Show indicator when keyboard focus turned on if there is focused actor.
 471     Actor actor = GetCurrentFocusActor();
 472     if(actor)
 473     {
 474       actor.Add( GetFocusIndicatorActor() );
 475     }
 476     mIsFocusIndicatorEnabled = true;
 477   }
 478   else
 479   {
 480     // Hide indicator when keyboard focus turned off
 481     Actor actor = GetCurrentFocusActor();
 482     if( actor && mFocusIndicatorActor )
 483     {
 484       actor.Remove( mFocusIndicatorActor );
 485     }
 486     mIsFocusIndicatorEnabled = false;
 487   }
 488 }
 489
 490 void KeyboardFocusManager::OnKeyEvent(const KeyEvent& event)
 491 {
 492   if(!mIsKeyboardFocusEnabled)
 493   {
 494     return;
 495   }
 496
 497   AccessibilityAdaptor accessibilityAdaptor = AccessibilityAdaptor::Get();
 498   bool isAccessibilityEnabled = accessibilityAdaptor.IsEnabled();
 499
 500   Toolkit::AccessibilityManager accessibilityManager = Toolkit::AccessibilityManager::Get();
 501
 502   std::string keyName = event.keyPressedName;
 503
 504   bool isFocusStartableKey = false;
 505
 506   if(event.state == KeyEvent::Down)
 507   {
 508     if (keyName == "Left")
 509     {
 510       if(!isAccessibilityEnabled)
 511       {
 512         if(!mIsFocusIndicatorEnabled)
 513         {
 514           // Show focus indicator
 515           mIsFocusIndicatorEnabled = true;
 516         }
 517         else
 518         {
 519           // Move the focus towards left
 520           MoveFocus(Toolkit::Control::KeyboardFocus::LEFT);
 521         }
 522
 523         isFocusStartableKey = true;
 524       }
 525       else
 526       {
 527         // Move the accessibility focus backward
 528         accessibilityManager.MoveFocusBackward();
 529       }
 530     }
 531     else if (keyName == "Right")
 532     {
 533       if(!isAccessibilityEnabled)
 534       {
 535         if(!mIsFocusIndicatorEnabled)
 536         {
 537           // Show focus indicator
 538           mIsFocusIndicatorEnabled = true;
 539         }
 540         else
 541         {
 542           // Move the focus towards right
 543           MoveFocus(Toolkit::Control::KeyboardFocus::RIGHT);
 544         }
 545       }
 546       else
 547       {
 548         // Move the accessibility focus forward
 549         accessibilityManager.MoveFocusForward();
 550       }
 551
 552       isFocusStartableKey = true;
 553     }
 554     else if (keyName == "Up" && !isAccessibilityEnabled)
 555     {
 556       if(!mIsFocusIndicatorEnabled)
 557       {
 558         // Show focus indicator
 559         mIsFocusIndicatorEnabled = true;
 560       }
 561       else
 562       {
 563         // Move the focus towards up
 564         MoveFocus(Toolkit::Control::KeyboardFocus::UP);
 565       }
 566
 567       isFocusStartableKey = true;
 568     }
 569     else if (keyName == "Down" && !isAccessibilityEnabled)
 570     {
 571       if(!mIsFocusIndicatorEnabled)
 572       {
 573         // Show focus indicator
 574         mIsFocusIndicatorEnabled = true;
 575       }
 576       else
 577       {
 578         // Move the focus towards down
 579         MoveFocus(Toolkit::Control::KeyboardFocus::DOWN);
 580       }
 581
 582       isFocusStartableKey = true;
 583     }
 584     else if (keyName == "Tab" && !isAccessibilityEnabled)
 585     {
 586       if(!mIsFocusIndicatorEnabled)
 587       {
 588         // Show focus indicator
 589         mIsFocusIndicatorEnabled = true;
 590       }
 591       else
 592       {
 593         // "Tab" key changes the focus group in the forward direction and
 594         // "Shift-Tab" key changes it in the backward direction.
 595         DoMoveFocusToNextFocusGroup(!event.IsShiftModifier());
 596       }
 597
 598       isFocusStartableKey = true;
 599     }
 600     else if (keyName == "space" && !isAccessibilityEnabled)
 601     {
 602       if(!mIsFocusIndicatorEnabled)
 603       {
 604         // Show focus indicator
 605         mIsFocusIndicatorEnabled = true;
 606       }
 607
 608       isFocusStartableKey = true;
 609     }
 610     else if (keyName == "" && !isAccessibilityEnabled)
 611     {
 612       // Check the fake key event for evas-plugin case
 613       if(!mIsFocusIndicatorEnabled)
 614       {
 615         // Show focus indicator
 616         mIsFocusIndicatorEnabled = true;
 617       }
 618
 619       isFocusStartableKey = true;
 620     }
 621     else if (keyName == "Backspace" && !isAccessibilityEnabled)
 622     {
 623       // Emit signal to go back to the previous view???
 624     }
 625   }
 626   else if(event.state == KeyEvent::Up)
 627   {
 628     if (keyName == "Return")
 629     {
 630       if(!mIsFocusIndicatorEnabled && !isAccessibilityEnabled)
 631       {
 632         // Show focus indicator
 633         mIsFocusIndicatorEnabled = true;
 634       }
 635       else
 636       {
 637         // The focused actor has enter pressed on it
 638         Actor actor;
 639         if( !isAccessibilityEnabled )
 640         {
 641           actor = GetCurrentFocusActor();
 642         }
 643         else
 644         {
 645           actor = accessibilityManager.GetCurrentFocusActor();
 646         }
 647
 648         if( actor )
 649         {
 650           DoKeyboardEnter( actor );
 651         }
 652       }
 653
 654       isFocusStartableKey = true;
 655     }
 656   }
 657
 658   if(isFocusStartableKey && mIsFocusIndicatorEnabled && !isAccessibilityEnabled)
 659   {
 660     Actor actor = GetCurrentFocusActor();
 661     if( actor )
 662     {
 663       // Make sure the focused actor is highlighted
 664       actor.Add( GetFocusIndicatorActor() );
 665     }
 666     else
 667     {
 668       // No actor is focused but keyboard focus is activated by the key press
 669       // Let's try to move the initial focus
 670       MoveFocus(Toolkit::Control::KeyboardFocus::RIGHT);
 671     }
 672   }
 673 }
 674
 675 void KeyboardFocusManager::OnTouch(const TouchData& touch)
 676 {
 677   // Clear the focus when user touch the screen.
 678   // We only do this on a Down event, otherwise the clear action may override a manually focused actor.
 679   if( ( touch.GetPointCount() < 1 ) || ( touch.GetState( 0 ) == PointState::DOWN ) )
 680   {
 681     ClearFocus();
 682   }
 683 }
 684
 685 Toolkit::KeyboardFocusManager::PreFocusChangeSignalType& KeyboardFocusManager::PreFocusChangeSignal()
 686 {
 687   return mPreFocusChangeSignal;
 688 }
 689
 690 Toolkit::KeyboardFocusManager::FocusChangedSignalType& KeyboardFocusManager::FocusChangedSignal()
 691 {
 692   return mFocusChangedSignal;
 693 }
 694
 695 Toolkit::KeyboardFocusManager::FocusGroupChangedSignalType& KeyboardFocusManager::FocusGroupChangedSignal()
 696 {
 697   return mFocusGroupChangedSignal;
 698 }
 699
 700 Toolkit::KeyboardFocusManager::FocusedActorEnterKeySignalType& KeyboardFocusManager::FocusedActorEnterKeySignal()
 701 {
 702   return mFocusedActorEnterKeySignal;
 703 }
 704
 705 bool KeyboardFocusManager::DoConnectSignal( BaseObject* object, ConnectionTrackerInterface* tracker, const std::string& signalName, FunctorDelegate* functor )
 706 {
 707   Dali::BaseHandle handle( object );
 708
 709   bool connected( true );
 710   KeyboardFocusManager* manager = static_cast< KeyboardFocusManager* >( object ); // TypeRegistry guarantees that this is the correct type.
 711
 712   if( 0 == strcmp( signalName.c_str(), SIGNAL_PRE_FOCUS_CHANGE ) )
 713   {
 714     manager->PreFocusChangeSignal().Connect( tracker, functor );
 715   }
 716   else if( 0 == strcmp( signalName.c_str(), SIGNAL_FOCUS_CHANGED ) )
 717   {
 718     manager->FocusChangedSignal().Connect( tracker, functor );
 719   }
 720   else if( 0 == strcmp( signalName.c_str(), SIGNAL_FOCUS_GROUP_CHANGED ) )
 721   {
 722     manager->FocusGroupChangedSignal().Connect( tracker, functor );
 723   }
 724   else if( 0 == strcmp( signalName.c_str(), SIGNAL_FOCUSED_ACTOR_ENTER_KEY ) )
 725   {
 726     manager->FocusedActorEnterKeySignal().Connect( tracker, functor );
 727   }
 728   else
 729   {
 730     // signalName does not match any signal
 731     connected = false;
 732   }
 733
 734   return connected;
 735 }
 736
 737 } // namespace Internal
 738
 739 } // namespace Toolkit
 740
 741 } // namespace Dali