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/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/object/type-registry.h>
  30 #include <dali/devel-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/accessibility-manager/accessibility-manager.h>
  38 #include <dali-toolkit/devel-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 = "isKeyboardFocusGroup"; // 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( Toolkit, KeyboardFocusManager, "keyboardPreFocusChange",           SIGNAL_PRE_FOCUS_CHANGE        )
  82 DALI_SIGNAL_REGISTRATION( Toolkit, KeyboardFocusManager, "keyboardFocusChanged",             SIGNAL_FOCUS_CHANGED           )
  83 DALI_SIGNAL_REGISTRATION( Toolkit, KeyboardFocusManager, "keyboardFocusGroupChanged",        SIGNAL_FOCUS_GROUP_CHANGED     )
  84 DALI_SIGNAL_REGISTRATION( Toolkit, KeyboardFocusManager, "keyboardFocusedActorEnterKey",     SIGNAL_FOCUSED_ACTOR_ENTER_KEY )
  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       DALI_LOG_INFO( gLogFilter, Debug::General, "[%s:%d] SUCCEED\n", __FUNCTION__, __LINE__);
 172       return true;
 173     }
 174   }
 175
 176   DALI_LOG_WARNING("[%s:%d] FAILED\n", __FUNCTION__, __LINE__);
 177   return false;
 178 }
 179
 180 Actor KeyboardFocusManager::GetCurrentFocusActor()
 181 {
 182   Actor rootActor = Stage::GetCurrent().GetRootLayer();
 183   return rootActor.FindChildById(mCurrentFocusActor);
 184 }
 185
 186 Actor KeyboardFocusManager::GetCurrentFocusGroup()
 187 {
 188   return GetFocusGroup(GetCurrentFocusActor());
 189 }
 190
 191 bool KeyboardFocusManager::IsLayoutControl(Actor actor) const
 192 {
 193   Toolkit::Control control = Toolkit::Control::DownCast(actor);
 194   return control && GetImplementation( control ).IsKeyboardNavigationSupported();
 195 }
 196
 197 Toolkit::Control KeyboardFocusManager::GetParentLayoutControl(Actor actor) const
 198 {
 199   // Get the actor's parent layout control that supports two dimensional keyboard navigation
 200   Actor rootActor = Stage::GetCurrent().GetRootLayer();
 201   Actor parent;
 202   if(actor)
 203   {
 204     parent = actor.GetParent();
 205   }
 206
 207   while( parent && !IsLayoutControl(parent) && parent != rootActor )
 208   {
 209     parent = parent.GetParent();
 210   }
 211
 212   return Toolkit::Control::DownCast(parent);
 213 }
 214
 215 bool KeyboardFocusManager::MoveFocus(Toolkit::Control::KeyboardFocus::Direction direction)
 216 {
 217   Actor currentFocusActor = GetCurrentFocusActor();
 218
 219   bool succeed = false;
 220
 221   // Go through the actor's hierarchy until we find a layout control that knows how to move the focus
 222   Toolkit::Control parentLayoutControl = GetParentLayoutControl(currentFocusActor);
 223   while(parentLayoutControl && !succeed)
 224   {
 225     succeed = DoMoveFocusWithinLayoutControl(parentLayoutControl, currentFocusActor, direction);
 226     parentLayoutControl = GetParentLayoutControl(parentLayoutControl);
 227   }
 228
 229   if(!succeed && !mPreFocusChangeSignal.Empty())
 230   {
 231     // Don't know how to move the focus further. The application needs to tell us which actor to move the focus to
 232     mIsWaitingKeyboardFocusChangeCommit = true;
 233     Actor nextFocusableActor = mPreFocusChangeSignal.Emit(currentFocusActor, Actor(), direction);
 234     mIsWaitingKeyboardFocusChangeCommit = false;
 235
 236     if ( nextFocusableActor && nextFocusableActor.IsKeyboardFocusable() )
 237     {
 238       // Whether the next focusable actor is a layout control
 239       if(IsLayoutControl(nextFocusableActor))
 240       {
 241         // If so, move the focus inside it.
 242         Toolkit::Control layoutControl = Toolkit::Control::DownCast(nextFocusableActor);
 243         succeed = DoMoveFocusWithinLayoutControl(layoutControl, currentFocusActor, direction);
 244       }
 245       else
 246       {
 247         // Otherwise, just set focus to the next focusable actor
 248         succeed = SetCurrentFocusActor(nextFocusableActor);
 249       }
 250     }
 251   }
 252
 253   return succeed;
 254 }
 255
 256 bool KeyboardFocusManager::DoMoveFocusWithinLayoutControl(Toolkit::Control control, Actor actor, Toolkit::Control::KeyboardFocus::Direction direction)
 257 {
 258   // Ask the control for the next actor to focus
 259   Actor nextFocusableActor = GetImplementation( control ).GetNextKeyboardFocusableActor(actor, direction, mFocusGroupLoopEnabled);
 260   if(nextFocusableActor)
 261   {
 262     if(!nextFocusableActor.IsKeyboardFocusable())
 263     {
 264       // If the actor is not focusable, ask the same layout control for the next actor to focus
 265       return DoMoveFocusWithinLayoutControl(control, nextFocusableActor, direction);
 266     }
 267     else
 268     {
 269       Actor currentFocusActor = GetCurrentFocusActor();
 270       Actor committedFocusActor = nextFocusableActor;
 271
 272       // We will try to move the focus to the actor. Emit a signal to notify the proposed actor to focus
 273       // Signal handler can check the proposed actor and return a different actor if it wishes.
 274       if( !mPreFocusChangeSignal.Empty() )
 275       {
 276         mIsWaitingKeyboardFocusChangeCommit = true;
 277         committedFocusActor = mPreFocusChangeSignal.Emit(currentFocusActor, nextFocusableActor, direction);
 278         mIsWaitingKeyboardFocusChangeCommit = false;
 279       }
 280
 281       if (committedFocusActor && committedFocusActor.IsKeyboardFocusable())
 282       {
 283         // Whether the commited focusable actor is a layout control
 284         if(IsLayoutControl(committedFocusActor))
 285         {
 286           // If so, move the focus inside it.
 287           Toolkit::Control layoutControl = Toolkit::Control::DownCast(committedFocusActor);
 288           return DoMoveFocusWithinLayoutControl(layoutControl, currentFocusActor, direction);
 289         }
 290         else
 291         {
 292           // Otherwise, just set focus to the next focusable actor
 293           if(committedFocusActor == nextFocusableActor)
 294           {
 295             // If the application hasn't changed our proposed actor, we informs the layout control we will
 296             // move the focus to what the control returns. The control might wish to perform some actions
 297             // before the focus is actually moved.
 298             GetImplementation( control ).OnKeyboardFocusChangeCommitted( committedFocusActor );
 299           }
 300
 301           return SetCurrentFocusActor(committedFocusActor);
 302         }
 303       }
 304       else
 305       {
 306         return false;
 307       }
 308     }
 309   }
 310   else
 311   {
 312     // No more actor can be focused in the given direction within the same layout control.
 313     return false;
 314   }
 315 }
 316
 317 bool KeyboardFocusManager::DoMoveFocusToNextFocusGroup(bool forward)
 318 {
 319   bool succeed = false;
 320
 321   // Get the parent layout control of the current focus group
 322   Toolkit::Control parentLayoutControl = GetParentLayoutControl(GetCurrentFocusGroup());
 323
 324   while(parentLayoutControl && !succeed)
 325   {
 326     // If the current focus group has a parent layout control, we can probably automatically
 327     // move the focus to the next focus group in the forward or backward direction.
 328     Toolkit::Control::KeyboardFocus::Direction direction = forward ? Toolkit::Control::KeyboardFocus::RIGHT : Toolkit::Control::KeyboardFocus::LEFT;
 329     succeed = DoMoveFocusWithinLayoutControl(parentLayoutControl, GetCurrentFocusActor(), direction);
 330     parentLayoutControl = GetParentLayoutControl(parentLayoutControl);
 331   }
 332
 333   if(!mFocusGroupChangedSignal.Empty())
 334   {
 335     // Emit a focus group changed signal. The applicaton can move the focus to a new focus group
 336     mFocusGroupChangedSignal.Emit(GetCurrentFocusActor(), forward);
 337   }
 338
 339   return succeed;
 340 }
 341
 342 void KeyboardFocusManager::DoKeyboardEnter(Actor actor)
 343 {
 344   if( actor )
 345   {
 346     Toolkit::Control control = Toolkit::Control::DownCast( actor );
 347     if( control )
 348     {
 349       // Notify the control that enter has been pressed on it.
 350       GetImplementation( control ).KeyboardEnter();
 351     }
 352
 353     // Send a notification for the actor.
 354     if( !mFocusedActorEnterKeySignal.Empty() )
 355     {
 356       mFocusedActorEnterKeySignal.Emit( actor );
 357     }
 358   }
 359 }
 360
 361 void KeyboardFocusManager::ClearFocus()
 362 {
 363   Actor actor = GetCurrentFocusActor();
 364   if(actor)
 365   {
 366     if(mFocusIndicatorActor)
 367     {
 368       actor.Remove(mFocusIndicatorActor);
 369     }
 370
 371     // Send notification for the change of focus actor
 372     if( !mFocusChangedSignal.Empty() )
 373     {
 374       mFocusChangedSignal.Emit(actor, Actor());
 375     }
 376   }
 377
 378   mCurrentFocusActor = 0;
 379   mIsFocusIndicatorEnabled = false;
 380 }
 381
 382 void KeyboardFocusManager::SetFocusGroupLoop(bool enabled)
 383 {
 384   mFocusGroupLoopEnabled = enabled;
 385 }
 386
 387 bool KeyboardFocusManager::GetFocusGroupLoop() const
 388 {
 389   return mFocusGroupLoopEnabled;
 390 }
 391
 392 void KeyboardFocusManager::SetAsFocusGroup(Actor actor, bool isFocusGroup)
 393 {
 394   if(actor)
 395   {
 396     // Create/Set focus group property.
 397     actor.RegisterProperty( IS_FOCUS_GROUP_PROPERTY_NAME, isFocusGroup, Property::READ_WRITE );
 398   }
 399 }
 400
 401 bool KeyboardFocusManager::IsFocusGroup(Actor actor) const
 402 {
 403   // Check whether the actor is a focus group
 404   bool isFocusGroup = false;
 405
 406   if(actor)
 407   {
 408     Property::Index propertyIsFocusGroup = actor.GetPropertyIndex(IS_FOCUS_GROUP_PROPERTY_NAME);
 409     if(propertyIsFocusGroup != Property::INVALID_INDEX)
 410     {
 411       isFocusGroup = actor.GetProperty<bool>(propertyIsFocusGroup);
 412     }
 413   }
 414
 415   return isFocusGroup;
 416 }
 417
 418 Actor KeyboardFocusManager::GetFocusGroup(Actor actor)
 419 {
 420   // Go through the actor's hierarchy to check which focus group the actor belongs to
 421   while (actor && !IsFocusGroup(actor))
 422   {
 423     actor = actor.GetParent();
 424   }
 425
 426   return actor;
 427 }
 428
 429 void KeyboardFocusManager::SetFocusIndicatorActor(Actor indicator)
 430 {
 431   if(mFocusIndicatorActor != indicator)
 432   {
 433     Actor currentFocusActor = GetCurrentFocusActor();
 434     if(currentFocusActor)
 435     {
 436       // The new focus indicator should be added to the current focused actor immediately
 437       if(mFocusIndicatorActor)
 438       {
 439         currentFocusActor.Remove(mFocusIndicatorActor);
 440       }
 441
 442       if(indicator)
 443       {
 444         currentFocusActor.Add(indicator);
 445       }
 446     }
 447
 448     mFocusIndicatorActor = indicator;
 449   }
 450 }
 451
 452 Actor KeyboardFocusManager::GetFocusIndicatorActor()
 453 {
 454   return mFocusIndicatorActor;
 455 }
 456
 457 void KeyboardFocusManager::CreateDefaultFocusIndicatorActor()
 458 {
 459   // Create a focus indicator actor shared by all the keyboard focusable actors
 460   Image borderImage = ResourceImage::New(FOCUS_BORDER_IMAGE_PATH);
 461
 462   ImageActor focusIndicator = ImageActor::New(borderImage);
 463   focusIndicator.SetPositionInheritanceMode( Dali::USE_PARENT_POSITION_PLUS_LOCAL_POSITION );
 464   focusIndicator.SetStyle( ImageActor::STYLE_NINE_PATCH );
 465   focusIndicator.SetNinePatchBorder(FOCUS_BORDER_IMAGE_BORDER);
 466   focusIndicator.SetPosition(Vector3(0.0f, 0.0f, 1.0f));
 467
 468   // Apply size constraint to the focus indicator
 469   focusIndicator.SetResizePolicy( ResizePolicy::FILL_TO_PARENT, Dimension::ALL_DIMENSIONS );
 470
 471   SetFocusIndicatorActor(focusIndicator);
 472 }
 473
 474 void KeyboardFocusManager::OnPhysicalKeyboardStatusChanged(PhysicalKeyboard keyboard)
 475 {
 476   mIsKeyboardFocusEnabled = keyboard.IsAttached();
 477
 478   if(mIsKeyboardFocusEnabled)
 479   {
 480     // Show indicator when keyboard focus turned on if there is focused actor.
 481     Actor actor = GetCurrentFocusActor();
 482     if(actor)
 483     {
 484       if(mFocusIndicatorActor)
 485       {
 486         actor.Add(mFocusIndicatorActor);
 487       }
 488     }
 489     mIsFocusIndicatorEnabled = true;
 490   }
 491   else
 492   {
 493     // Hide indicator when keyboard focus turned off
 494     Actor actor = GetCurrentFocusActor();
 495     if(actor)
 496     {
 497       actor.Remove(mFocusIndicatorActor);
 498     }
 499     mIsFocusIndicatorEnabled = false;
 500   }
 501 }
 502
 503 void KeyboardFocusManager::OnKeyEvent(const KeyEvent& event)
 504 {
 505   if(!mIsKeyboardFocusEnabled)
 506   {
 507     return;
 508   }
 509
 510   AccessibilityAdaptor accessibilityAdaptor = AccessibilityAdaptor::Get();
 511   bool isAccessibilityEnabled = accessibilityAdaptor.IsEnabled();
 512
 513   Toolkit::AccessibilityManager accessibilityManager = Toolkit::AccessibilityManager::Get();
 514
 515   std::string keyName = event.keyPressedName;
 516
 517   bool isFocusStartableKey = false;
 518
 519   if(event.state == KeyEvent::Down)
 520   {
 521     if (keyName == "Left")
 522     {
 523       if(!isAccessibilityEnabled)
 524       {
 525         if(!mIsFocusIndicatorEnabled)
 526         {
 527           // Show focus indicator
 528           mIsFocusIndicatorEnabled = true;
 529         }
 530         else
 531         {
 532           // Move the focus towards left
 533           MoveFocus(Toolkit::Control::KeyboardFocus::LEFT);
 534         }
 535
 536         isFocusStartableKey = true;
 537       }
 538       else
 539       {
 540         // Move the accessibility focus backward
 541         accessibilityManager.MoveFocusBackward();
 542       }
 543     }
 544     else if (keyName == "Right")
 545     {
 546       if(!isAccessibilityEnabled)
 547       {
 548         if(!mIsFocusIndicatorEnabled)
 549         {
 550           // Show focus indicator
 551           mIsFocusIndicatorEnabled = true;
 552         }
 553         else
 554         {
 555           // Move the focus towards right
 556           MoveFocus(Toolkit::Control::KeyboardFocus::RIGHT);
 557         }
 558       }
 559       else
 560       {
 561         // Move the accessibility focus forward
 562         accessibilityManager.MoveFocusForward();
 563       }
 564
 565       isFocusStartableKey = true;
 566     }
 567     else if (keyName == "Up" && !isAccessibilityEnabled)
 568     {
 569       if(!mIsFocusIndicatorEnabled)
 570       {
 571         // Show focus indicator
 572         mIsFocusIndicatorEnabled = true;
 573       }
 574       else
 575       {
 576         // Move the focus towards up
 577         MoveFocus(Toolkit::Control::KeyboardFocus::UP);
 578       }
 579
 580       isFocusStartableKey = true;
 581     }
 582     else if (keyName == "Down" && !isAccessibilityEnabled)
 583     {
 584       if(!mIsFocusIndicatorEnabled)
 585       {
 586         // Show focus indicator
 587         mIsFocusIndicatorEnabled = true;
 588       }
 589       else
 590       {
 591         // Move the focus towards down
 592         MoveFocus(Toolkit::Control::KeyboardFocus::DOWN);
 593       }
 594
 595       isFocusStartableKey = true;
 596     }
 597     else if (keyName == "Tab" && !isAccessibilityEnabled)
 598     {
 599       if(!mIsFocusIndicatorEnabled)
 600       {
 601         // Show focus indicator
 602         mIsFocusIndicatorEnabled = true;
 603       }
 604       else
 605       {
 606         // "Tab" key changes the focus group in the forward direction and
 607         // "Shift-Tab" key changes it in the backward direction.
 608         DoMoveFocusToNextFocusGroup(!event.IsShiftModifier());
 609       }
 610
 611       isFocusStartableKey = true;
 612     }
 613     else if (keyName == "space" && !isAccessibilityEnabled)
 614     {
 615       if(!mIsFocusIndicatorEnabled)
 616       {
 617         // Show focus indicator
 618         mIsFocusIndicatorEnabled = true;
 619       }
 620
 621       isFocusStartableKey = true;
 622     }
 623     else if (keyName == "" && !isAccessibilityEnabled)
 624     {
 625       // Check the fake key event for evas-plugin case
 626       if(!mIsFocusIndicatorEnabled)
 627       {
 628         // Show focus indicator
 629         mIsFocusIndicatorEnabled = true;
 630       }
 631
 632       isFocusStartableKey = true;
 633     }
 634     else if (keyName == "Backspace" && !isAccessibilityEnabled)
 635     {
 636       // Emit signal to go back to the previous view???
 637     }
 638   }
 639   else if(event.state == KeyEvent::Up)
 640   {
 641     if (keyName == "Return")
 642     {
 643       if(!mIsFocusIndicatorEnabled && !isAccessibilityEnabled)
 644       {
 645         // Show focus indicator
 646         mIsFocusIndicatorEnabled = true;
 647       }
 648       else
 649       {
 650         // The focused actor has enter pressed on it
 651         Actor actor;
 652         if( !isAccessibilityEnabled )
 653         {
 654           actor = GetCurrentFocusActor();
 655         }
 656         else
 657         {
 658           actor = accessibilityManager.GetCurrentFocusActor();
 659         }
 660
 661         if( actor )
 662         {
 663           DoKeyboardEnter( actor );
 664         }
 665       }
 666
 667       isFocusStartableKey = true;
 668     }
 669   }
 670
 671   if(isFocusStartableKey && mIsFocusIndicatorEnabled && !isAccessibilityEnabled)
 672   {
 673     Actor actor = GetCurrentFocusActor();
 674     if( !actor )
 675     {
 676       // No actor is focused but keyboard focus is activated by the key press
 677       // Let's try to move the initial focus
 678       MoveFocus(Toolkit::Control::KeyboardFocus::RIGHT);
 679     }
 680     else if(mFocusIndicatorActor)
 681     {
 682       // Make sure the focused actor is highlighted
 683       actor.Add(mFocusIndicatorActor);
 684     }
 685   }
 686 }
 687
 688 void KeyboardFocusManager::OnTouched(const TouchEvent& touchEvent)
 689 {
 690   // Clear the focus when user touch the screen.
 691   // We only do this on a Down event, otherwise the clear action may override a manually focused actor.
 692   if( ( touchEvent.GetPointCount() < 1 ) || ( touchEvent.GetPoint( 0 ).state == TouchPoint::Down ) )
 693   {
 694     ClearFocus();
 695   }
 696 }
 697
 698 Toolkit::KeyboardFocusManager::PreFocusChangeSignalType& KeyboardFocusManager::PreFocusChangeSignal()
 699 {
 700   return mPreFocusChangeSignal;
 701 }
 702
 703 Toolkit::KeyboardFocusManager::FocusChangedSignalType& KeyboardFocusManager::FocusChangedSignal()
 704 {
 705   return mFocusChangedSignal;
 706 }
 707
 708 Toolkit::KeyboardFocusManager::FocusGroupChangedSignalType& KeyboardFocusManager::FocusGroupChangedSignal()
 709 {
 710   return mFocusGroupChangedSignal;
 711 }
 712
 713 Toolkit::KeyboardFocusManager::FocusedActorEnterKeySignalType& KeyboardFocusManager::FocusedActorEnterKeySignal()
 714 {
 715   return mFocusedActorEnterKeySignal;
 716 }
 717
 718 bool KeyboardFocusManager::DoConnectSignal( BaseObject* object, ConnectionTrackerInterface* tracker, const std::string& signalName, FunctorDelegate* functor )
 719 {
 720   Dali::BaseHandle handle( object );
 721
 722   bool connected( true );
 723   KeyboardFocusManager* manager = dynamic_cast<KeyboardFocusManager*>( object );
 724
 725   if( 0 == strcmp( signalName.c_str(), SIGNAL_PRE_FOCUS_CHANGE ) )
 726   {
 727     manager->PreFocusChangeSignal().Connect( tracker, functor );
 728   }
 729   if( 0 == strcmp( signalName.c_str(), SIGNAL_FOCUS_CHANGED ) )
 730   {
 731     manager->FocusChangedSignal().Connect( tracker, functor );
 732   }
 733   if( 0 == strcmp( signalName.c_str(), SIGNAL_FOCUS_GROUP_CHANGED ) )
 734   {
 735     manager->FocusGroupChangedSignal().Connect( tracker, functor );
 736   }
 737   else if( 0 == strcmp( signalName.c_str(), SIGNAL_FOCUSED_ACTOR_ENTER_KEY ) )
 738   {
 739     manager->FocusedActorEnterKeySignal().Connect( tracker, functor );
 740   }
 741   else
 742   {
 743     // signalName does not match any signal
 744     connected = false;
 745   }
 746
 747   return connected;
 748 }
 749
 750 } // namespace Internal
 751
 752 } // namespace Toolkit
 753
 754 } // namespace Dali