Change adding focus indicator logic

[platform/core/uifw/dali-toolkit.git] / dali-toolkit / internal / focus-manager / keyboard-focus-manager-impl.cpp

diff --git a/dali-toolkit/internal/focus-manager/keyboard-focus-manager-impl.cpp b/dali-toolkit/internal/focus-manager/keyboard-focus-manager-impl.cpp
index e6ed691..f67ca6f 100644 (file)
--- a/dali-toolkit/internal/focus-manager/keyboard-focus-manager-impl.cpp
+++ b/dali-toolkit/internal/focus-manager/keyboard-focus-manager-impl.cpp
@@ -86,6 +86,8 @@ DALI_SIGNAL_REGISTRATION( Toolkit, KeyboardFocusManager, "keyboardFocusedActorEn
 
 DALI_TYPE_REGISTRATION_END()
 
+const unsigned int MAX_HISTORY_AMOUNT = 30; ///< Max length of focus history stack
+
 } // unnamed namespace
 
 Toolkit::KeyboardFocusManager KeyboardFocusManager::Get()
@@ -108,19 +110,21 @@ Toolkit::KeyboardFocusManager KeyboardFocusManager::Get()
 }
 
 KeyboardFocusManager::KeyboardFocusManager()
-: mCurrentFocusActor(0),
+: mPreFocusChangeSignal(),
+  mFocusChangedSignal(),
+  mFocusGroupChangedSignal(),
+  mFocusedActorEnterKeySignal(),
+  mCurrentFocusActor( 0 ),
   mFocusIndicatorActor(),
-  mFocusGroupLoopEnabled(false),
-  mIsKeyboardFocusEnabled(false),
-  mIsFocusIndicatorEnabled(false),
-  mIsWaitingKeyboardFocusChangeCommit(false),
-  mSlotDelegate(this)
+  mFocusGroupLoopEnabled( false ),
+  mIsFocusIndicatorEnabled( false ),
+  mIsWaitingKeyboardFocusChangeCommit( false ),
+  mFocusHistory(),
+  mSlotDelegate( this )
 {
-  OnPhysicalKeyboardStatusChanged(PhysicalKeyboard::Get());
-
+  // TODO: Get FocusIndicatorEnable constant from stylesheet to set mIsFocusIndicatorEnabled.
   Toolkit::KeyInputFocusManager::Get().UnhandledKeyEventSignal().Connect(mSlotDelegate, &KeyboardFocusManager::OnKeyEvent);
   Stage::GetCurrent().TouchSignal().Connect( mSlotDelegate, &KeyboardFocusManager::OnTouch );
-  PhysicalKeyboard::Get().StatusChangedSignal().Connect(mSlotDelegate, &KeyboardFocusManager::OnPhysicalKeyboardStatusChanged);
 }
 
 KeyboardFocusManager::~KeyboardFocusManager()
@@ -148,9 +152,8 @@ bool KeyboardFocusManager::DoSetCurrentFocusActor( const unsigned int actorID )
   // Check whether the actor is in the stage and is keyboard focusable.
   if( actor && actor.IsKeyboardFocusable() )
   {
-    mIsFocusIndicatorEnabled = true;
-    // Draw the focus indicator upon the focused actor when PhysicalKeyboard is attached
-    if( mIsKeyboardFocusEnabled )
+    // Draw the focus indicator upon the focused actor when Focus Indicator is enabled
+    if( mIsFocusIndicatorEnabled )
     {
       actor.Add( GetFocusIndicatorActor() );
     }
@@ -165,6 +168,16 @@ bool KeyboardFocusManager::DoSetCurrentFocusActor( const unsigned int actorID )
     // Save the current focused actor
     mCurrentFocusActor = actorID;
 
+    // Push Current Focused Actor to FocusHistory
+    mFocusHistory.PushBack( &actor.GetBaseObject() );
+
+    // Delete first element before add new element when Stack is full.
+    if( mFocusHistory.Count() > MAX_HISTORY_AMOUNT )
+    {
+       FocusStackIterator beginPos = mFocusHistory.Begin();
+       mFocusHistory.Erase( beginPos );
+    }
+
     DALI_LOG_INFO( gLogFilter, Debug::General, "[%s:%d] SUCCEED\n", __FUNCTION__, __LINE__);
     success = true;
   }
@@ -187,6 +200,33 @@ Actor KeyboardFocusManager::GetCurrentFocusGroup()
   return GetFocusGroup(GetCurrentFocusActor());
 }
 
+void KeyboardFocusManager::MoveFocusBackward()
+{
+  // Find Pre Focused Actor when the list size is more than 1
+  if( mFocusHistory.Count() > 1 )
+  {
+    // Delete current focused actor in history
+    FocusStackIterator endPos = mFocusHistory.End();
+    endPos = mFocusHistory.Erase( --endPos );
+
+    // If pre-focused actors are not on stage, remove them in stack
+    while( !Dali::Actor::DownCast(BaseHandle(mFocusHistory[ mFocusHistory.Count() - 1 ])).OnStage() )
+    {
+      endPos = mFocusHistory.Erase( --endPos );
+    }
+
+    // Get pre focused actor
+    BaseObject* object = mFocusHistory[ mFocusHistory.Count() - 1 ];
+    BaseHandle handle( object );
+    Actor preFocusedActor = Dali::Actor::DownCast( handle );
+
+    // Delete pre focused actor in history because it will pushed again by SetCurrentFocusActor()
+    mFocusHistory.Erase( --endPos );
+
+    SetCurrentFocusActor( preFocusedActor );
+ }
+}
+
 bool KeyboardFocusManager::IsLayoutControl(Actor actor) const
 {
   Toolkit::Control control = Toolkit::Control::DownCast(actor);
@@ -463,39 +503,8 @@ Actor KeyboardFocusManager::GetFocusIndicatorActor()
   return mFocusIndicatorActor;
 }
 
-void KeyboardFocusManager::OnPhysicalKeyboardStatusChanged(PhysicalKeyboard keyboard)
-{
-  mIsKeyboardFocusEnabled = keyboard.IsAttached();
-
-  if(mIsKeyboardFocusEnabled)
-  {
-    // Show indicator when keyboard focus turned on if there is focused actor.
-    Actor actor = GetCurrentFocusActor();
-    if(actor)
-    {
-      actor.Add( GetFocusIndicatorActor() );
-    }
-    mIsFocusIndicatorEnabled = true;
-  }
-  else
-  {
-    // Hide indicator when keyboard focus turned off
-    Actor actor = GetCurrentFocusActor();
-    if( actor && mFocusIndicatorActor )
-    {
-      actor.Remove( mFocusIndicatorActor );
-    }
-    mIsFocusIndicatorEnabled = false;
-  }
-}
-
 void KeyboardFocusManager::OnKeyEvent(const KeyEvent& event)
 {
-  if(!mIsKeyboardFocusEnabled)
-  {
-    return;
-  }
-
   AccessibilityAdaptor accessibilityAdaptor = AccessibilityAdaptor::Get();
   bool isAccessibilityEnabled = accessibilityAdaptor.IsEnabled();
 
@@ -583,6 +592,36 @@ void KeyboardFocusManager::OnKeyEvent(const KeyEvent& event)
 
       isFocusStartableKey = true;
     }
+    else if (keyName == "Prior" && !isAccessibilityEnabled)
+    {
+      if(!mIsFocusIndicatorEnabled)
+      {
+        // Show focus indicator
+        mIsFocusIndicatorEnabled = true;
+      }
+      else
+      {
+        // Move the focus towards the previous page
+        MoveFocus(Toolkit::Control::KeyboardFocus::PAGE_UP);
+      }
+
+      isFocusStartableKey = true;
+    }
+    else if (keyName == "Next" && !isAccessibilityEnabled)
+    {
+      if(!mIsFocusIndicatorEnabled)
+      {
+        // Show focus indicator
+        mIsFocusIndicatorEnabled = true;
+      }
+      else
+      {
+        // Move the focus towards the next page
+        MoveFocus(Toolkit::Control::KeyboardFocus::PAGE_DOWN);
+      }
+
+      isFocusStartableKey = true;
+    }
     else if (keyName == "Tab" && !isAccessibilityEnabled)
     {
       if(!mIsFocusIndicatorEnabled)
@@ -624,6 +663,9 @@ void KeyboardFocusManager::OnKeyEvent(const KeyEvent& event)
     {
       // Emit signal to go back to the previous view???
     }
+    else if (keyName == "Escape" && !isAccessibilityEnabled)
+    {
+    }
   }
   else if(event.state == KeyEvent::Up)
   {