Revert the TextLabel to use the old renderer.
[platform/core/uifw/dali-toolkit.git] / dali-toolkit / internal / text / text-controller.cpp
index b32b20e..11a9161 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2016 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -31,6 +31,7 @@
 #include <dali-toolkit/internal/text/layouts/layout-parameters.h>
 #include <dali-toolkit/internal/text/markup-processor.h>
 #include <dali-toolkit/internal/text/text-controller-impl.h>
+#include <dali-toolkit/internal/text/text-editable-control-interface.h>
 
 namespace
 {
@@ -40,7 +41,6 @@ namespace
 #endif
 
 const float MAX_FLOAT = std::numeric_limits<float>::max();
-const unsigned int POINTS_PER_INCH = 72;
 
 const std::string EMPTY_STRING("");
 
@@ -68,15 +68,19 @@ namespace Text
  *
  * @param[in] eventData The event data pointer.
  * @param[in] logicalModel The logical model where to add the new font description run.
+ * @param[out] startOfSelectedText Index to the first selected character.
+ * @param[out] lengthOfSelectedText Number of selected characters.
  */
 FontDescriptionRun& UpdateSelectionFontStyleRun( EventData* eventData,
-                                                 LogicalModelPtr logicalModel )
+                                                 LogicalModelPtr logicalModel,
+                                                 CharacterIndex& startOfSelectedText,
+                                                 Length& lengthOfSelectedText )
 {
   const bool handlesCrossed = eventData->mLeftSelectionPosition > eventData->mRightSelectionPosition;
 
   // Get start and end position of selection
-  const CharacterIndex startOfSelectedText = handlesCrossed ? eventData->mRightSelectionPosition : eventData->mLeftSelectionPosition;
-  const Length lengthOfSelectedText = ( handlesCrossed ? eventData->mLeftSelectionPosition : eventData->mRightSelectionPosition ) - startOfSelectedText;
+  startOfSelectedText = handlesCrossed ? eventData->mRightSelectionPosition : eventData->mLeftSelectionPosition;
+  lengthOfSelectedText = ( handlesCrossed ? eventData->mLeftSelectionPosition : eventData->mRightSelectionPosition ) - startOfSelectedText;
 
   // Add the font run.
   const VectorBase::SizeType numberOfRuns = logicalModel->mFontDescriptionRuns.Count();
@@ -90,15 +94,32 @@ FontDescriptionRun& UpdateSelectionFontStyleRun( EventData* eventData,
   // Recalculate the selection highlight as the metrics may have changed.
   eventData->mUpdateLeftSelectionPosition = true;
   eventData->mUpdateRightSelectionPosition = true;
+  eventData->mUpdateHighlightBox = true;
 
   return fontDescriptionRun;
 }
 
-ControllerPtr Controller::New( ControlInterface& controlInterface )
+// public : Constructor.
+
+ControllerPtr Controller::New()
+{
+  return ControllerPtr( new Controller() );
+}
+
+ControllerPtr Controller::New( ControlInterface* controlInterface )
 {
   return ControllerPtr( new Controller( controlInterface ) );
 }
 
+ControllerPtr Controller::New( ControlInterface* controlInterface,
+                               EditableControlInterface* editableControlInterface )
+{
+  return ControllerPtr( new Controller( controlInterface,
+                                        editableControlInterface ) );
+}
+
+// public : Configure the text controller.
+
 void Controller::EnableTextInput( DecoratorPtr decorator )
 {
   if( NULL == mImpl->mEventData )
@@ -115,9 +136,6 @@ void Controller::SetGlyphType( TextAbstraction::GlyphType glyphType )
   // Clear the font-specific data
   ClearFontData();
 
-  mImpl->mOperationsPending = ALL_OPERATIONS;
-  mImpl->mRecalculateNaturalSize = true;
-
   mImpl->RequestRelayout();
 }
 
@@ -131,6 +149,232 @@ bool Controller::IsMarkupProcessorEnabled() const
   return mImpl->mMarkupProcessorEnabled;
 }
 
+void Controller::SetAutoScrollEnabled( bool enable )
+{
+  DALI_LOG_INFO( gLogFilter, Debug::General, "Controller::SetAutoScrollEnabled[%s] SingleBox[%s]-> [%p]\n", (enable)?"true":"false", ( mImpl->mLayoutEngine.GetLayout() == LayoutEngine::SINGLE_LINE_BOX)?"true":"false", this );
+
+  if( mImpl->mLayoutEngine.GetLayout() == LayoutEngine::SINGLE_LINE_BOX )
+  {
+    if( enable )
+    {
+      DALI_LOG_INFO( gLogFilter, Debug::General, "Controller::SetAutoScrollEnabled for SINGLE_LINE_BOX\n" );
+      mImpl->mOperationsPending = static_cast<OperationsMask>( mImpl->mOperationsPending |
+                                                               LAYOUT                    |
+                                                               ALIGN                     |
+                                                               UPDATE_LAYOUT_SIZE        |
+                                                               UPDATE_DIRECTION          |
+                                                               REORDER );
+
+    }
+    else
+    {
+      DALI_LOG_INFO( gLogFilter, Debug::General, "Controller::SetAutoScrollEnabled Disabling autoscroll\n");
+      mImpl->mOperationsPending = static_cast<OperationsMask>( mImpl->mOperationsPending |
+                                                               LAYOUT                    |
+                                                               ALIGN                     |
+                                                               UPDATE_LAYOUT_SIZE        |
+                                                               REORDER );
+    }
+
+    mImpl->mIsAutoScrollEnabled = enable;
+    mImpl->RequestRelayout();
+  }
+  else
+  {
+    DALI_LOG_WARNING( "Attempted AutoScrolling on a non SINGLE_LINE_BOX, request ignored\n" );
+    mImpl->mIsAutoScrollEnabled = false;
+  }
+}
+
+bool Controller::IsAutoScrollEnabled() const
+{
+  DALI_LOG_INFO( gLogFilter, Debug::Verbose, "Controller::IsAutoScrollEnabled[%s]\n", mImpl->mIsAutoScrollEnabled?"true":"false" );
+
+  return mImpl->mIsAutoScrollEnabled;
+}
+
+CharacterDirection Controller::GetAutoScrollDirection() const
+{
+  return mImpl->mAutoScrollDirectionRTL;
+}
+
+float Controller::GetAutoScrollLineAlignment() const
+{
+  float offset = 0.f;
+
+  if( mImpl->mVisualModel &&
+      ( 0u != mImpl->mVisualModel->mLines.Count() ) )
+  {
+    offset = ( *mImpl->mVisualModel->mLines.Begin() ).alignmentOffset;
+  }
+
+  return offset;
+}
+
+void Controller::SetHorizontalScrollEnabled( bool enable )
+{
+  if( ( NULL != mImpl->mEventData ) &&
+      mImpl->mEventData->mDecorator )
+  {
+    mImpl->mEventData->mDecorator->SetHorizontalScrollEnabled( enable );
+  }
+}
+
+bool Controller::IsHorizontalScrollEnabled() const
+{
+  if( ( NULL != mImpl->mEventData ) &&
+      mImpl->mEventData->mDecorator )
+  {
+    return mImpl->mEventData->mDecorator->IsHorizontalScrollEnabled();
+  }
+
+  return false;
+}
+
+void Controller::SetVerticalScrollEnabled( bool enable )
+{
+  if( ( NULL != mImpl->mEventData ) &&
+      mImpl->mEventData->mDecorator )
+  {
+    if( mImpl->mEventData->mDecorator )
+    {
+      mImpl->mEventData->mDecorator->SetVerticalScrollEnabled( enable );
+    }
+  }
+}
+
+bool Controller::IsVerticalScrollEnabled() const
+{
+  if( ( NULL != mImpl->mEventData ) &&
+      mImpl->mEventData->mDecorator )
+  {
+    return mImpl->mEventData->mDecorator->IsVerticalScrollEnabled();
+  }
+
+  return false;
+}
+
+void Controller::SetSmoothHandlePanEnabled( bool enable )
+{
+  if( ( NULL != mImpl->mEventData ) &&
+      mImpl->mEventData->mDecorator )
+  {
+    mImpl->mEventData->mDecorator->SetSmoothHandlePanEnabled( enable );
+  }
+}
+
+bool Controller::IsSmoothHandlePanEnabled() const
+{
+  if( ( NULL != mImpl->mEventData ) &&
+      mImpl->mEventData->mDecorator )
+  {
+    return mImpl->mEventData->mDecorator->IsSmoothHandlePanEnabled();
+  }
+
+  return false;
+}
+
+void Controller::SetMaximumNumberOfCharacters( Length maxCharacters )
+{
+  mImpl->mMaximumNumberOfCharacters = maxCharacters;
+}
+
+int Controller::GetMaximumNumberOfCharacters()
+{
+  return mImpl->mMaximumNumberOfCharacters;
+}
+
+void Controller::SetEnableCursorBlink( bool enable )
+{
+  DALI_ASSERT_DEBUG( NULL != mImpl->mEventData && "TextInput disabled" );
+
+  if( NULL != mImpl->mEventData )
+  {
+    mImpl->mEventData->mCursorBlinkEnabled = enable;
+
+    if( !enable &&
+        mImpl->mEventData->mDecorator )
+    {
+      mImpl->mEventData->mDecorator->StopCursorBlink();
+    }
+  }
+}
+
+bool Controller::GetEnableCursorBlink() const
+{
+  if( NULL != mImpl->mEventData )
+  {
+    return mImpl->mEventData->mCursorBlinkEnabled;
+  }
+
+  return false;
+}
+
+void Controller::SetMultiLineEnabled( bool enable )
+{
+  const LayoutEngine::Layout layout = enable ? LayoutEngine::MULTI_LINE_BOX : LayoutEngine::SINGLE_LINE_BOX;
+
+  if( layout != mImpl->mLayoutEngine.GetLayout() )
+  {
+    // Set the layout type.
+    mImpl->mLayoutEngine.SetLayout( layout );
+
+    // Set the flags to redo the layout operations
+    const OperationsMask layoutOperations =  static_cast<OperationsMask>( LAYOUT             |
+                                                                          UPDATE_LAYOUT_SIZE |
+                                                                          ALIGN              |
+                                                                          REORDER );
+
+    mImpl->mOperationsPending = static_cast<OperationsMask>( mImpl->mOperationsPending | layoutOperations );
+
+    mImpl->RequestRelayout();
+  }
+}
+
+bool Controller::IsMultiLineEnabled() const
+{
+  return LayoutEngine::MULTI_LINE_BOX == mImpl->mLayoutEngine.GetLayout();
+}
+
+void Controller::SetHorizontalAlignment( LayoutEngine::HorizontalAlignment alignment )
+{
+  if( alignment != mImpl->mLayoutEngine.GetHorizontalAlignment() )
+  {
+    // Set the alignment.
+    mImpl->mLayoutEngine.SetHorizontalAlignment( alignment );
+
+    // Set the flag to redo the alignment operation.
+    mImpl->mOperationsPending = static_cast<OperationsMask>( mImpl->mOperationsPending | ALIGN );
+
+    mImpl->RequestRelayout();
+  }
+}
+
+LayoutEngine::HorizontalAlignment Controller::GetHorizontalAlignment() const
+{
+  return mImpl->mLayoutEngine.GetHorizontalAlignment();
+}
+
+void Controller::SetVerticalAlignment( LayoutEngine::VerticalAlignment alignment )
+{
+  if( alignment != mImpl->mLayoutEngine.GetVerticalAlignment() )
+  {
+    // Set the alignment.
+    mImpl->mLayoutEngine.SetVerticalAlignment( alignment );
+
+    mImpl->mOperationsPending = static_cast<OperationsMask>( mImpl->mOperationsPending | ALIGN );
+
+    mImpl->RequestRelayout();
+  }
+}
+
+LayoutEngine::VerticalAlignment Controller::GetVerticalAlignment() const
+{
+  return mImpl->mLayoutEngine.GetVerticalAlignment();
+}
+
+// public : Update
+
 void Controller::SetText( const std::string& text )
 {
   DALI_LOG_INFO( gLogFilter, Debug::Verbose, "Controller::SetText\n" );
@@ -160,6 +404,8 @@ void Controller::SetText( const std::string& text )
 
   if( !text.empty() )
   {
+    mImpl->mVisualModel->SetTextColor( mImpl->mTextColor );
+
     MarkupProcessData markupProcessData( mImpl->mLogicalModel->mColorRuns,
                                          mImpl->mLogicalModel->mFontDescriptionRuns );
 
@@ -227,23 +473,19 @@ void Controller::SetText( const std::string& text )
     mImpl->mEventData->mEventQueue.clear();
   }
 
-  // Notify IMF as text changed
-  NotifyImfManager();
-
-  // Do this last since it provides callbacks into application code
-  mImpl->mControlInterface.TextChanged();
+  // Do this last since it provides callbacks into application code.
+  if( NULL != mImpl->mEditableControlInterface )
+  {
+    mImpl->mEditableControlInterface->TextChanged();
+  }
 }
 
 void Controller::GetText( std::string& text ) const
 {
   if( !mImpl->IsShowingPlaceholderText() )
   {
-    Vector<Character>& utf32Characters = mImpl->mLogicalModel->mText;
-
-    if( 0u != utf32Characters.Count() )
-    {
-      Utf32ToUtf8( &utf32Characters[0], utf32Characters.Count(), text );
-    }
+    // Retrieves the text string.
+    mImpl->GetText( 0u, text );
   }
   else
   {
@@ -251,16 +493,6 @@ void Controller::GetText( std::string& text ) const
   }
 }
 
-unsigned int Controller::GetLogicalCursorPosition() const
-{
-  if( NULL != mImpl->mEventData )
-  {
-    return mImpl->mEventData->mPrimaryCursorPosition;
-  }
-
-  return 0u;
-}
-
 void Controller::SetPlaceholderText( PlaceholderType type, const std::string& text )
 {
   if( NULL != mImpl->mEventData )
@@ -298,16 +530,23 @@ void Controller::GetPlaceholderText( PlaceholderType type, std::string& text ) c
   }
 }
 
-void Controller::SetMaximumNumberOfCharacters( Length maxCharacters )
+void Controller::UpdateAfterFontChange( const std::string& newDefaultFont )
 {
-  mImpl->mMaximumNumberOfCharacters = maxCharacters;
-}
+  DALI_LOG_INFO( gLogFilter, Debug::Verbose, "Controller::UpdateAfterFontChange\n");
 
-int Controller::GetMaximumNumberOfCharacters()
-{
-  return mImpl->mMaximumNumberOfCharacters;
+  if( !mImpl->mFontDefaults->familyDefined ) // If user defined font then should not update when system font changes
+  {
+    DALI_LOG_INFO( gLogFilter, Debug::Concise, "Controller::UpdateAfterFontChange newDefaultFont(%s)\n", newDefaultFont.c_str() );
+    mImpl->mFontDefaults->mFontDescription.family = newDefaultFont;
+
+    ClearFontData();
+
+    mImpl->RequestRelayout();
+  }
 }
 
+// public : Default style & Input style
+
 void Controller::SetDefaultFontFamily( const std::string& defaultFontFamily )
 {
   if( NULL == mImpl->mFontDefaults )
@@ -317,14 +556,11 @@ void Controller::SetDefaultFontFamily( const std::string& defaultFontFamily )
 
   mImpl->mFontDefaults->mFontDescription.family = defaultFontFamily;
   DALI_LOG_INFO( gLogFilter, Debug::General, "Controller::SetDefaultFontFamily %s\n", defaultFontFamily.c_str());
-  mImpl->mFontDefaults->familyDefined = true;
+  mImpl->mFontDefaults->familyDefined = !defaultFontFamily.empty();
 
   // Clear the font-specific data
   ClearFontData();
 
-  mImpl->mOperationsPending = ALL_OPERATIONS;
-  mImpl->mRecalculateNaturalSize = true;
-
   mImpl->RequestRelayout();
 }
 
@@ -338,26 +574,6 @@ const std::string& Controller::GetDefaultFontFamily() const
   return EMPTY_STRING;
 }
 
-void Controller::SetDefaultFontStyle( const std::string& style )
-{
-  if( NULL == mImpl->mFontDefaults )
-  {
-    mImpl->mFontDefaults = new FontDefaults();
-  }
-
-  mImpl->mFontDefaults->mFontStyle = style;
-}
-
-const std::string& Controller::GetDefaultFontStyle() const
-{
-  if( NULL != mImpl->mFontDefaults )
-  {
-    return mImpl->mFontDefaults->mFontStyle;
-  }
-
-  return EMPTY_STRING;
-}
-
 void Controller::SetDefaultFontWeight( FontWeight weight )
 {
   if( NULL == mImpl->mFontDefaults )
@@ -371,12 +587,14 @@ void Controller::SetDefaultFontWeight( FontWeight weight )
   // Clear the font-specific data
   ClearFontData();
 
-  mImpl->mOperationsPending = ALL_OPERATIONS;
-  mImpl->mRecalculateNaturalSize = true;
-
   mImpl->RequestRelayout();
 }
 
+bool Controller::IsDefaultFontWeightDefined() const
+{
+  return mImpl->mFontDefaults->weightDefined;
+}
+
 FontWeight Controller::GetDefaultFontWeight() const
 {
   if( NULL != mImpl->mFontDefaults )
@@ -400,12 +618,14 @@ void Controller::SetDefaultFontWidth( FontWidth width )
   // Clear the font-specific data
   ClearFontData();
 
-  mImpl->mOperationsPending = ALL_OPERATIONS;
-  mImpl->mRecalculateNaturalSize = true;
-
   mImpl->RequestRelayout();
 }
 
+bool Controller::IsDefaultFontWidthDefined() const
+{
+  return mImpl->mFontDefaults->widthDefined;
+}
+
 FontWidth Controller::GetDefaultFontWidth() const
 {
   if( NULL != mImpl->mFontDefaults )
@@ -429,12 +649,14 @@ void Controller::SetDefaultFontSlant( FontSlant slant )
   // Clear the font-specific data
   ClearFontData();
 
-  mImpl->mOperationsPending = ALL_OPERATIONS;
-  mImpl->mRecalculateNaturalSize = true;
-
   mImpl->RequestRelayout();
 }
 
+bool Controller::IsDefaultFontSlantDefined() const
+{
+  return mImpl->mFontDefaults->slantDefined;
+}
+
 FontSlant Controller::GetDefaultFontSlant() const
 {
   if( NULL != mImpl->mFontDefaults )
@@ -455,21 +677,9 @@ void Controller::SetDefaultPointSize( float pointSize )
   mImpl->mFontDefaults->mDefaultPointSize = pointSize;
   mImpl->mFontDefaults->sizeDefined = true;
 
-  unsigned int horizontalDpi( 0u );
-  unsigned int verticalDpi( 0u );
-  mImpl->mFontClient.GetDpi( horizontalDpi, verticalDpi );
-
-  // Adjust the metrics if the fixed-size font should be down-scaled
-  int maxEmojiSize( pointSize/POINTS_PER_INCH * verticalDpi );
-  DALI_LOG_INFO( gLogFilter, Debug::General, "Controller::SetDefaultPointSize %p setting MaxEmojiSize %d\n", this, maxEmojiSize );
-  mImpl->mMetrics->SetMaxEmojiSize( maxEmojiSize );
-
   // Clear the font-specific data
   ClearFontData();
 
-  mImpl->mOperationsPending = ALL_OPERATIONS;
-  mImpl->mRecalculateNaturalSize = true;
-
   mImpl->RequestRelayout();
 }
 
@@ -483,22 +693,6 @@ float Controller::GetDefaultPointSize() const
   return 0.0f;
 }
 
-void Controller::UpdateAfterFontChange( const std::string& newDefaultFont )
-{
-  DALI_LOG_INFO( gLogFilter, Debug::Concise, "Controller::UpdateAfterFontChange");
-
-  if( !mImpl->mFontDefaults->familyDefined ) // If user defined font then should not update when system font changes
-  {
-    DALI_LOG_INFO( gLogFilter, Debug::Concise, "Controller::UpdateAfterFontChange newDefaultFont(%s)\n", newDefaultFont.c_str() );
-    ClearFontData();
-    mImpl->mFontDefaults->mFontDescription.family = newDefaultFont;
-    mImpl->UpdateModel( ALL_OPERATIONS );
-    mImpl->QueueModifyEvent( ModifyEvent::TEXT_REPLACED );
-    mImpl->mRecalculateNaturalSize = true;
-    mImpl->RequestRelayout();
-  }
-}
-
 void Controller::SetTextColor( const Vector4& textColor )
 {
   mImpl->mTextColor = textColor;
@@ -516,71 +710,6 @@ const Vector4& Controller::GetTextColor() const
   return mImpl->mTextColor;
 }
 
-bool Controller::RemoveText( int cursorOffset, int numberOfCharacters )
-{
-  bool removed = false;
-
-  if( NULL == mImpl->mEventData )
-  {
-    return removed;
-  }
-
-  DALI_LOG_INFO( gLogFilter, Debug::General, "Controller::RemoveText %p mText.Count() %d cursor %d cursorOffset %d numberOfCharacters %d\n",
-                 this, mImpl->mLogicalModel->mText.Count(), mImpl->mEventData->mPrimaryCursorPosition, cursorOffset, numberOfCharacters );
-
-  if( !mImpl->IsShowingPlaceholderText() )
-  {
-    // Delete at current cursor position
-    Vector<Character>& currentText = mImpl->mLogicalModel->mText;
-    CharacterIndex& oldCursorIndex = mImpl->mEventData->mPrimaryCursorPosition;
-
-    CharacterIndex cursorIndex = oldCursorIndex;
-
-    // Validate the cursor position & number of characters
-    if( static_cast< CharacterIndex >( std::abs( cursorOffset ) ) <= cursorIndex )
-    {
-      cursorIndex = oldCursorIndex + cursorOffset;
-    }
-
-    if( ( cursorIndex + numberOfCharacters ) > currentText.Count() )
-    {
-      numberOfCharacters = currentText.Count() - cursorIndex;
-    }
-
-    if( ( cursorIndex + numberOfCharacters ) <= mImpl->mTextUpdateInfo.mPreviousNumberOfCharacters )
-    {
-      // Mark the paragraphs to be updated.
-      mImpl->mTextUpdateInfo.mCharacterIndex = std::min( cursorIndex, mImpl->mTextUpdateInfo.mCharacterIndex );
-      mImpl->mTextUpdateInfo.mNumberOfCharactersToRemove += numberOfCharacters;
-
-      // Update the input style and remove the text's style before removing the text.
-
-      // Set first the default input style.
-      mImpl->RetrieveDefaultInputStyle( mImpl->mEventData->mInputStyle );
-
-      // Update the input style.
-      mImpl->mLogicalModel->RetrieveStyle( cursorIndex, mImpl->mEventData->mInputStyle );
-
-      // Remove the text's style before removing the text.
-      mImpl->mLogicalModel->UpdateTextStyleRuns( cursorIndex, -numberOfCharacters );
-
-      // Remove the characters.
-      Vector<Character>::Iterator first = currentText.Begin() + cursorIndex;
-      Vector<Character>::Iterator last  = first + numberOfCharacters;
-
-      currentText.Erase( first, last );
-
-      // Cursor position retreat
-      oldCursorIndex = cursorIndex;
-
-      DALI_LOG_INFO( gLogFilter, Debug::General, "Controller::RemoveText %p removed %d\n", this, numberOfCharacters );
-      removed = true;
-    }
-  }
-
-  return removed;
-}
-
 void Controller::SetPlaceholderTextColor( const Vector4& textColor )
 {
   if( NULL != mImpl->mEventData )
@@ -665,11 +794,63 @@ float Controller::GetUnderlineHeight() const
   return mImpl->mVisualModel->GetUnderlineHeight();
 }
 
+void Controller::SetDefaultEmbossProperties( const std::string& embossProperties )
+{
+  if( NULL == mImpl->mEmbossDefaults )
+  {
+    mImpl->mEmbossDefaults = new EmbossDefaults();
+  }
+
+  mImpl->mEmbossDefaults->properties = embossProperties;
+}
+
+const std::string& Controller::GetDefaultEmbossProperties() const
+{
+  if( NULL != mImpl->mEmbossDefaults )
+  {
+    return mImpl->mEmbossDefaults->properties;
+  }
+
+  return EMPTY_STRING;
+}
+
+void Controller::SetDefaultOutlineProperties( const std::string& outlineProperties )
+{
+  if( NULL == mImpl->mOutlineDefaults )
+  {
+    mImpl->mOutlineDefaults = new OutlineDefaults();
+  }
+
+  mImpl->mOutlineDefaults->properties = outlineProperties;
+}
+
+const std::string& Controller::GetDefaultOutlineProperties() const
+{
+  if( NULL != mImpl->mOutlineDefaults )
+  {
+    return mImpl->mOutlineDefaults->properties;
+  }
+
+  return EMPTY_STRING;
+}
+
+void Controller::SetDefaultLineSpacing( float lineSpacing )
+{
+  //TODO finish implementation
+  mImpl->mLayoutEngine.SetDefaultLineSpacing( lineSpacing );
+}
+
+float Controller::GetDefaultLineSpacing() const
+{
+  return mImpl->mLayoutEngine.GetDefaultLineSpacing();
+}
+
 void Controller::SetInputColor( const Vector4& color )
 {
   if( NULL != mImpl->mEventData )
   {
     mImpl->mEventData->mInputStyle.textColor = color;
+    mImpl->mEventData->mInputStyle.isDefaultColor = false;
 
     if( EventData::SELECTING == mImpl->mEventData->mState )
     {
@@ -691,6 +872,10 @@ void Controller::SetInputColor( const Vector4& color )
       // Request to relayout.
       mImpl->mOperationsPending = static_cast<OperationsMask>( mImpl->mOperationsPending | COLOR );
       mImpl->RequestRelayout();
+
+      mImpl->mTextUpdateInfo.mCharacterIndex = startOfSelectedText;
+      mImpl->mTextUpdateInfo.mNumberOfCharactersToRemove = lengthOfSelectedText;
+      mImpl->mTextUpdateInfo.mNumberOfCharactersToAdd = lengthOfSelectedText;
     }
   }
 }
@@ -712,12 +897,16 @@ void Controller::SetInputFontFamily( const std::string& fontFamily )
   if( NULL != mImpl->mEventData )
   {
     mImpl->mEventData->mInputStyle.familyName = fontFamily;
-    mImpl->mEventData->mInputStyle.familyDefined = true;
+    mImpl->mEventData->mInputStyle.isFamilyDefined = true;
 
     if( EventData::SELECTING == mImpl->mEventData->mState )
     {
+      CharacterIndex startOfSelectedText = 0u;
+      Length lengthOfSelectedText = 0u;
       FontDescriptionRun& fontDescriptionRun = UpdateSelectionFontStyleRun( mImpl->mEventData,
-                                                                            mImpl->mLogicalModel );
+                                                                            mImpl->mLogicalModel,
+                                                                            startOfSelectedText,
+                                                                            lengthOfSelectedText );
 
       fontDescriptionRun.familyLength = fontFamily.size();
       fontDescriptionRun.familyName = new char[fontDescriptionRun.familyLength];
@@ -727,13 +916,25 @@ void Controller::SetInputFontFamily( const std::string& fontFamily )
       // The memory allocated for the font family name is freed when the font description is removed from the logical model.
 
       // Request to relayout.
-      mImpl->mOperationsPending = ALL_OPERATIONS;
+      mImpl->mOperationsPending = static_cast<OperationsMask>( mImpl->mOperationsPending |
+                                                               VALIDATE_FONTS            |
+                                                               SHAPE_TEXT                |
+                                                               GET_GLYPH_METRICS         |
+                                                               LAYOUT                    |
+                                                               UPDATE_LAYOUT_SIZE        |
+                                                               REORDER                   |
+                                                               ALIGN );
       mImpl->mRecalculateNaturalSize = true;
       mImpl->RequestRelayout();
 
+      mImpl->mTextUpdateInfo.mCharacterIndex = startOfSelectedText;
+      mImpl->mTextUpdateInfo.mNumberOfCharactersToRemove = lengthOfSelectedText;
+      mImpl->mTextUpdateInfo.mNumberOfCharactersToAdd = lengthOfSelectedText;
+
       // As the font changes, recalculate the handle positions is needed.
       mImpl->mEventData->mUpdateLeftSelectionPosition = true;
       mImpl->mEventData->mUpdateRightSelectionPosition = true;
+      mImpl->mEventData->mUpdateHighlightBox = true;
       mImpl->mEventData->mScrollAfterUpdatePosition = true;
     }
   }
@@ -750,53 +951,62 @@ const std::string& Controller::GetInputFontFamily() const
   return GetDefaultFontFamily();
 }
 
-void Controller::SetInputFontStyle( const std::string& fontStyle )
-{
-  if( NULL != mImpl->mEventData )
-  {
-    mImpl->mEventData->mInputStyle.fontStyle = fontStyle;
-  }
-}
-
-const std::string& Controller::GetInputFontStyle() const
-{
-  if( NULL != mImpl->mEventData )
-  {
-    return mImpl->mEventData->mInputStyle.fontStyle;
-  }
-
-  // Return the default font's style if there is no EventData.
-  return GetDefaultFontStyle();
-}
-
 void Controller::SetInputFontWeight( FontWeight weight )
 {
   if( NULL != mImpl->mEventData )
   {
     mImpl->mEventData->mInputStyle.weight = weight;
-    mImpl->mEventData->mInputStyle.weightDefined = true;
+    mImpl->mEventData->mInputStyle.isWeightDefined = true;
 
     if( EventData::SELECTING == mImpl->mEventData->mState )
     {
+      CharacterIndex startOfSelectedText = 0u;
+      Length lengthOfSelectedText = 0u;
       FontDescriptionRun& fontDescriptionRun = UpdateSelectionFontStyleRun( mImpl->mEventData,
-                                                                            mImpl->mLogicalModel );
+                                                                            mImpl->mLogicalModel,
+                                                                            startOfSelectedText,
+                                                                            lengthOfSelectedText );
 
       fontDescriptionRun.weight = weight;
       fontDescriptionRun.weightDefined = true;
 
       // Request to relayout.
-      mImpl->mOperationsPending = ALL_OPERATIONS;
+      mImpl->mOperationsPending = static_cast<OperationsMask>( mImpl->mOperationsPending |
+                                                               VALIDATE_FONTS            |
+                                                               SHAPE_TEXT                |
+                                                               GET_GLYPH_METRICS         |
+                                                               LAYOUT                    |
+                                                               UPDATE_LAYOUT_SIZE        |
+                                                               REORDER                   |
+                                                               ALIGN );
       mImpl->mRecalculateNaturalSize = true;
       mImpl->RequestRelayout();
 
+      mImpl->mTextUpdateInfo.mCharacterIndex = startOfSelectedText;
+      mImpl->mTextUpdateInfo.mNumberOfCharactersToRemove = lengthOfSelectedText;
+      mImpl->mTextUpdateInfo.mNumberOfCharactersToAdd = lengthOfSelectedText;
+
       // As the font might change, recalculate the handle positions is needed.
       mImpl->mEventData->mUpdateLeftSelectionPosition = true;
       mImpl->mEventData->mUpdateRightSelectionPosition = true;
+      mImpl->mEventData->mUpdateHighlightBox = true;
       mImpl->mEventData->mScrollAfterUpdatePosition = true;
     }
   }
 }
 
+bool Controller::IsInputFontWeightDefined() const
+{
+  bool defined = false;
+
+  if( NULL != mImpl->mEventData )
+  {
+    defined = mImpl->mEventData->mInputStyle.isWeightDefined;
+  }
+
+  return defined;
+}
+
 FontWeight Controller::GetInputFontWeight() const
 {
   if( NULL != mImpl->mEventData )
@@ -812,29 +1022,57 @@ void Controller::SetInputFontWidth( FontWidth width )
   if( NULL != mImpl->mEventData )
   {
     mImpl->mEventData->mInputStyle.width = width;
-    mImpl->mEventData->mInputStyle.widthDefined = true;
+    mImpl->mEventData->mInputStyle.isWidthDefined = true;
 
     if( EventData::SELECTING == mImpl->mEventData->mState )
     {
+      CharacterIndex startOfSelectedText = 0u;
+      Length lengthOfSelectedText = 0u;
       FontDescriptionRun& fontDescriptionRun = UpdateSelectionFontStyleRun( mImpl->mEventData,
-                                                                            mImpl->mLogicalModel );
+                                                                            mImpl->mLogicalModel,
+                                                                            startOfSelectedText,
+                                                                            lengthOfSelectedText );
 
       fontDescriptionRun.width = width;
       fontDescriptionRun.widthDefined = true;
 
       // Request to relayout.
-      mImpl->mOperationsPending = ALL_OPERATIONS;
+      mImpl->mOperationsPending = static_cast<OperationsMask>( mImpl->mOperationsPending |
+                                                               VALIDATE_FONTS            |
+                                                               SHAPE_TEXT                |
+                                                               GET_GLYPH_METRICS         |
+                                                               LAYOUT                    |
+                                                               UPDATE_LAYOUT_SIZE        |
+                                                               REORDER                   |
+                                                               ALIGN );
       mImpl->mRecalculateNaturalSize = true;
       mImpl->RequestRelayout();
 
+      mImpl->mTextUpdateInfo.mCharacterIndex = startOfSelectedText;
+      mImpl->mTextUpdateInfo.mNumberOfCharactersToRemove = lengthOfSelectedText;
+      mImpl->mTextUpdateInfo.mNumberOfCharactersToAdd = lengthOfSelectedText;
+
       // As the font might change, recalculate the handle positions is needed.
       mImpl->mEventData->mUpdateLeftSelectionPosition = true;
       mImpl->mEventData->mUpdateRightSelectionPosition = true;
+      mImpl->mEventData->mUpdateHighlightBox = true;
       mImpl->mEventData->mScrollAfterUpdatePosition = true;
     }
   }
 }
 
+bool Controller::IsInputFontWidthDefined() const
+{
+  bool defined = false;
+
+  if( NULL != mImpl->mEventData )
+  {
+    defined = mImpl->mEventData->mInputStyle.isWidthDefined;
+  }
+
+  return defined;
+}
+
 FontWidth Controller::GetInputFontWidth() const
 {
   if( NULL != mImpl->mEventData )
@@ -850,29 +1088,57 @@ void Controller::SetInputFontSlant( FontSlant slant )
   if( NULL != mImpl->mEventData )
   {
     mImpl->mEventData->mInputStyle.slant = slant;
-    mImpl->mEventData->mInputStyle.slantDefined = true;
+    mImpl->mEventData->mInputStyle.isSlantDefined = true;
 
     if( EventData::SELECTING == mImpl->mEventData->mState )
     {
+      CharacterIndex startOfSelectedText = 0u;
+      Length lengthOfSelectedText = 0u;
       FontDescriptionRun& fontDescriptionRun = UpdateSelectionFontStyleRun( mImpl->mEventData,
-                                                                            mImpl->mLogicalModel );
+                                                                            mImpl->mLogicalModel,
+                                                                            startOfSelectedText,
+                                                                            lengthOfSelectedText );
 
       fontDescriptionRun.slant = slant;
       fontDescriptionRun.slantDefined = true;
 
       // Request to relayout.
-      mImpl->mOperationsPending = ALL_OPERATIONS;
+      mImpl->mOperationsPending = static_cast<OperationsMask>( mImpl->mOperationsPending |
+                                                               VALIDATE_FONTS            |
+                                                               SHAPE_TEXT                |
+                                                               GET_GLYPH_METRICS         |
+                                                               LAYOUT                    |
+                                                               UPDATE_LAYOUT_SIZE        |
+                                                               REORDER                   |
+                                                               ALIGN );
       mImpl->mRecalculateNaturalSize = true;
       mImpl->RequestRelayout();
 
+      mImpl->mTextUpdateInfo.mCharacterIndex = startOfSelectedText;
+      mImpl->mTextUpdateInfo.mNumberOfCharactersToRemove = lengthOfSelectedText;
+      mImpl->mTextUpdateInfo.mNumberOfCharactersToAdd = lengthOfSelectedText;
+
       // As the font might change, recalculate the handle positions is needed.
       mImpl->mEventData->mUpdateLeftSelectionPosition = true;
       mImpl->mEventData->mUpdateRightSelectionPosition = true;
+      mImpl->mEventData->mUpdateHighlightBox = true;
       mImpl->mEventData->mScrollAfterUpdatePosition = true;
     }
   }
 }
 
+bool Controller::IsInputFontSlantDefined() const
+{
+  bool defined = false;
+
+  if( NULL != mImpl->mEventData )
+  {
+    defined = mImpl->mEventData->mInputStyle.isSlantDefined;
+  }
+
+  return defined;
+}
+
 FontSlant Controller::GetInputFontSlant() const
 {
   if( NULL != mImpl->mEventData )
@@ -888,23 +1154,40 @@ void Controller::SetInputFontPointSize( float size )
   if( NULL != mImpl->mEventData )
   {
     mImpl->mEventData->mInputStyle.size = size;
+    mImpl->mEventData->mInputStyle.isSizeDefined = true;
 
     if( EventData::SELECTING == mImpl->mEventData->mState )
     {
+      CharacterIndex startOfSelectedText = 0u;
+      Length lengthOfSelectedText = 0u;
       FontDescriptionRun& fontDescriptionRun = UpdateSelectionFontStyleRun( mImpl->mEventData,
-                                                                            mImpl->mLogicalModel );
+                                                                            mImpl->mLogicalModel,
+                                                                            startOfSelectedText,
+                                                                            lengthOfSelectedText );
 
       fontDescriptionRun.size = static_cast<PointSize26Dot6>( size * 64.f );
       fontDescriptionRun.sizeDefined = true;
 
       // Request to relayout.
-      mImpl->mOperationsPending = ALL_OPERATIONS;
+      mImpl->mOperationsPending = static_cast<OperationsMask>( mImpl->mOperationsPending |
+                                                               VALIDATE_FONTS            |
+                                                               SHAPE_TEXT                |
+                                                               GET_GLYPH_METRICS         |
+                                                               LAYOUT                    |
+                                                               UPDATE_LAYOUT_SIZE        |
+                                                               REORDER                   |
+                                                               ALIGN );
       mImpl->mRecalculateNaturalSize = true;
       mImpl->RequestRelayout();
 
+      mImpl->mTextUpdateInfo.mCharacterIndex = startOfSelectedText;
+      mImpl->mTextUpdateInfo.mNumberOfCharactersToRemove = lengthOfSelectedText;
+      mImpl->mTextUpdateInfo.mNumberOfCharactersToAdd = lengthOfSelectedText;
+
       // As the font might change, recalculate the handle positions is needed.
       mImpl->mEventData->mUpdateLeftSelectionPosition = true;
       mImpl->mEventData->mUpdateRightSelectionPosition = true;
+      mImpl->mEventData->mUpdateHighlightBox = true;
       mImpl->mEventData->mScrollAfterUpdatePosition = true;
     }
   }
@@ -921,45 +1204,112 @@ float Controller::GetInputFontPointSize() const
   return GetDefaultPointSize();
 }
 
-void Controller::SetEnableCursorBlink( bool enable )
+void Controller::SetInputLineSpacing( float lineSpacing )
 {
-  DALI_ASSERT_DEBUG( NULL != mImpl->mEventData && "TextInput disabled" );
+  if( NULL != mImpl->mEventData )
+  {
+    mImpl->mEventData->mInputStyle.lineSpacing = lineSpacing;
+    mImpl->mEventData->mInputStyle.isLineSpacingDefined = true;
+  }
+}
 
+float Controller::GetInputLineSpacing() const
+{
   if( NULL != mImpl->mEventData )
   {
-    mImpl->mEventData->mCursorBlinkEnabled = enable;
+    return mImpl->mEventData->mInputStyle.lineSpacing;
+  }
 
-    if( !enable &&
-        mImpl->mEventData->mDecorator )
-    {
-      mImpl->mEventData->mDecorator->StopCursorBlink();
-    }
+  return 0.f;
+}
+
+void Controller::SetInputShadowProperties( const std::string& shadowProperties )
+{
+  if( NULL != mImpl->mEventData )
+  {
+    mImpl->mEventData->mInputStyle.shadowProperties = shadowProperties;
   }
 }
 
-bool Controller::GetEnableCursorBlink() const
+const std::string& Controller::GetInputShadowProperties() const
 {
   if( NULL != mImpl->mEventData )
   {
-    return mImpl->mEventData->mCursorBlinkEnabled;
+    return mImpl->mEventData->mInputStyle.shadowProperties;
   }
 
-  return false;
+  return EMPTY_STRING;
 }
 
-const Vector2& Controller::GetScrollPosition() const
+void Controller::SetInputUnderlineProperties( const std::string& underlineProperties )
+{
+  if( NULL != mImpl->mEventData )
+  {
+    mImpl->mEventData->mInputStyle.underlineProperties = underlineProperties;
+  }
+}
+
+const std::string& Controller::GetInputUnderlineProperties() const
+{
+  if( NULL != mImpl->mEventData )
+  {
+    return mImpl->mEventData->mInputStyle.underlineProperties;
+  }
+
+  return EMPTY_STRING;
+}
+
+void Controller::SetInputEmbossProperties( const std::string& embossProperties )
+{
+  if( NULL != mImpl->mEventData )
+  {
+    mImpl->mEventData->mInputStyle.embossProperties = embossProperties;
+  }
+}
+
+const std::string& Controller::GetInputEmbossProperties() const
+{
+  if( NULL != mImpl->mEventData )
+  {
+    return mImpl->mEventData->mInputStyle.embossProperties;
+  }
+
+  return GetDefaultEmbossProperties();
+}
+
+void Controller::SetInputOutlineProperties( const std::string& outlineProperties )
+{
+  if( NULL != mImpl->mEventData )
+  {
+    mImpl->mEventData->mInputStyle.outlineProperties = outlineProperties;
+  }
+}
+
+const std::string& Controller::GetInputOutlineProperties() const
 {
   if( NULL != mImpl->mEventData )
   {
-    return mImpl->mEventData->mScrollPosition;
+    return mImpl->mEventData->mInputStyle.outlineProperties;
   }
 
-  return Vector2::ZERO;
+  return GetDefaultOutlineProperties();
+}
+
+// public : Queries & retrieves.
+
+LayoutEngine& Controller::GetLayoutEngine()
+{
+  return mImpl->mLayoutEngine;
+}
+
+View& Controller::GetView()
+{
+  return mImpl->mView;
 }
 
-const Vector2& Controller::GetAlignmentOffset() const
+const Vector2& Controller::GetScrollPosition() const
 {
-  return mImpl->mAlignmentOffset;
+  return mImpl->mScrollPosition;
 }
 
 Vector3 Controller::GetNaturalSize()
@@ -991,8 +1341,8 @@ Vector3 Controller::GetNaturalSize()
     mImpl->mTextUpdateInfo.mParagraphCharacterIndex = 0u;
     mImpl->mTextUpdateInfo.mRequestedNumberOfCharacters = mImpl->mLogicalModel->mText.Count();
 
-    // Store the actual control's width.
-    const float actualControlWidth = mImpl->mVisualModel->mControlSize.width;
+    // Store the actual control's size to restore later.
+    const Size actualControlSize = mImpl->mVisualModel->mControlSize;
 
     DoRelayout( Size( MAX_FLOAT, MAX_FLOAT ),
                 static_cast<OperationsMask>( onlyOnceOperations |
@@ -1017,8 +1367,8 @@ Vector3 Controller::GetNaturalSize()
     // Clear the update info. This info will be set the next time the text is updated.
     mImpl->mTextUpdateInfo.Clear();
 
-    // Restore the actual control's width.
-    mImpl->mVisualModel->mControlSize.width = actualControlWidth;
+    // Restore the actual control's size.
+    mImpl->mVisualModel->mControlSize = actualControlSize;
 
     DALI_LOG_INFO( gLogFilter, Debug::Verbose, "<--Controller::GetNaturalSize calculated %f,%f,%f\n", naturalSize.x, naturalSize.y, naturalSize.z );
   }
@@ -1099,17 +1449,20 @@ float Controller::GetHeightForWidth( float width )
   return layoutSize.height;
 }
 
-bool Controller::Relayout( const Size& size )
+// public : Relayout.
+
+Controller::UpdateTextType Controller::Relayout( const Size& size )
 {
-  DALI_LOG_INFO( gLogFilter, Debug::Verbose, "-->Controller::Relayout %p size %f,%f\n", this, size.width, size.height );
+  DALI_LOG_INFO( gLogFilter, Debug::Verbose, "-->Controller::Relayout %p size %f,%f, autoScroll[%s]\n", this, size.width, size.height, mImpl->mIsAutoScrollEnabled ?"true":"false"  );
+
+  UpdateTextType updateTextType = NONE_UPDATED;
 
   if( ( size.width < Math::MACHINE_EPSILON_1000 ) || ( size.height < Math::MACHINE_EPSILON_1000 ) )
   {
-    bool glyphsRemoved( false );
     if( 0u != mImpl->mVisualModel->mGlyphPositions.Count() )
     {
       mImpl->mVisualModel->mGlyphPositions.Clear();
-      glyphsRemoved = true;
+      updateTextType = MODEL_UPDATED;
     }
 
     // Clear the update info. This info will be set the next time the text is updated.
@@ -1117,7 +1470,8 @@ bool Controller::Relayout( const Size& size )
 
     // Not worth to relayout if width or height is equal to zero.
     DALI_LOG_INFO( gLogFilter, Debug::Verbose, "<--Controller::Relayout (skipped)\n" );
-    return glyphsRemoved;
+
+    return updateTextType;
   }
 
   // Whether a new size has been set.
@@ -1131,7 +1485,7 @@ bool Controller::Relayout( const Size& size )
     mImpl->mOperationsPending = static_cast<OperationsMask>( mImpl->mOperationsPending |
                                                              LAYOUT                    |
                                                              ALIGN                     |
-                                                             UPDATE_ACTUAL_SIZE        |
+                                                             UPDATE_LAYOUT_SIZE        |
                                                              REORDER );
     // Set the update info to relayout the whole text.
     mImpl->mTextUpdateInfo.mFullRelayoutNeeded = true;
@@ -1139,21 +1493,16 @@ bool Controller::Relayout( const Size& size )
   }
 
   // Whether there are modify events.
-  const bool isModifyEventsEmpty = 0u == mImpl->mModifyEvents.Count();
-
-  // Make sure the model is up-to-date before layouting.
-  ProcessModifyEvents();
-  mImpl->UpdateModel( mImpl->mOperationsPending );
-
-  // Style operations that need to be done if the text is modified.
-  if( !isModifyEventsEmpty )
+  if( 0u != mImpl->mModifyEvents.Count() )
   {
+    // Style operations that need to be done if the text is modified.
     mImpl->mOperationsPending = static_cast<OperationsMask>( mImpl->mOperationsPending |
                                                              COLOR );
   }
 
-  // Apply the style runs if text is modified.
-  bool updated = mImpl->UpdateModelStyle( mImpl->mOperationsPending );
+  // Make sure the model is up-to-date before layouting.
+  ProcessModifyEvents();
+  bool updated = mImpl->UpdateModel( mImpl->mOperationsPending );
 
   // Layout the text.
   Size layoutSize;
@@ -1161,21 +1510,29 @@ bool Controller::Relayout( const Size& size )
                         mImpl->mOperationsPending,
                         layoutSize ) || updated;
 
+  if( updated )
+  {
+    updateTextType = MODEL_UPDATED;
+  }
+
   // Do not re-do any operation until something changes.
   mImpl->mOperationsPending = NO_OPERATION;
 
   // Whether the text control is editable
   const bool isEditable = NULL != mImpl->mEventData;
 
-  // Keep the current offset and alignment as it will be used to update the decorator's positions (if the size changes).
+  // Keep the current offset as it will be used to update the decorator's positions (if the size changes).
   Vector2 offset;
   if( newSize && isEditable )
   {
-    offset = mImpl->mAlignmentOffset + mImpl->mEventData->mScrollPosition;
+    offset = mImpl->mScrollPosition;
   }
 
-  // After doing the text layout, the alignment offset to place the actor in the desired position can be calculated.
-  CalculateTextAlignment( size );
+  if( !isEditable || !IsMultiLineEnabled() )
+  {
+    // After doing the text layout, the vertical offset to place the actor in the desired position can be calculated.
+    CalculateVerticalOffset( size );
+  }
 
   if( isEditable )
   {
@@ -1185,605 +1542,594 @@ bool Controller::Relayout( const Size& size )
       mImpl->ClampHorizontalScroll( layoutSize );
 
       // Update the decorator's positions is needed if there is a new size.
-      mImpl->mEventData->mDecorator->UpdatePositions( mImpl->mAlignmentOffset + mImpl->mEventData->mScrollPosition - offset );
+      mImpl->mEventData->mDecorator->UpdatePositions( mImpl->mScrollPosition - offset );
     }
 
     // Move the cursor, grab handle etc.
-    updated = mImpl->ProcessInputEvents() || updated;
+    if( mImpl->ProcessInputEvents() )
+    {
+      updateTextType = static_cast<UpdateTextType>( updateTextType | DECORATOR_UPDATED );
+    }
   }
 
   // Clear the update info. This info will be set the next time the text is updated.
   mImpl->mTextUpdateInfo.Clear();
-
   DALI_LOG_INFO( gLogFilter, Debug::Verbose, "<--Controller::Relayout\n" );
-  return updated;
+
+  return updateTextType;
 }
 
-void Controller::ProcessModifyEvents()
+void Controller::RequestRelayout()
 {
-  Vector<ModifyEvent>& events = mImpl->mModifyEvents;
+  mImpl->RequestRelayout();
+}
 
-  if( 0u == events.Count() )
-  {
-    // Nothing to do.
-    return;
-  }
+// public : Input style change signals.
 
-  for( Vector<ModifyEvent>::ConstIterator it = events.Begin(),
-         endIt = events.End();
+bool Controller::IsInputStyleChangedSignalsQueueEmpty()
+{
+  return ( NULL == mImpl->mEventData ) || ( 0u == mImpl->mEventData->mInputStyleChangedQueue.Count() );
+}
+
+void Controller::ProcessInputStyleChangedSignals()
+{
+  if( NULL == mImpl->mEventData )
+  {
+    // Nothing to do.
+    return;
+  }
+
+  for( Vector<InputStyle::Mask>::ConstIterator it = mImpl->mEventData->mInputStyleChangedQueue.Begin(),
+         endIt = mImpl->mEventData->mInputStyleChangedQueue.End();
        it != endIt;
        ++it )
   {
-    const ModifyEvent& event = *it;
+    const InputStyle::Mask mask = *it;
 
-    if( ModifyEvent::TEXT_REPLACED == event.type )
+    if( NULL != mImpl->mEditableControlInterface )
     {
-      // A (single) replace event should come first, otherwise we wasted time processing NOOP events
-      DALI_ASSERT_DEBUG( it == events.Begin() && "Unexpected TEXT_REPLACED event" );
-
-      TextReplacedEvent();
+      // Emit the input style changed signal.
+      mImpl->mEditableControlInterface->InputStyleChanged( mask );
     }
-    else if( ModifyEvent::TEXT_INSERTED == event.type )
+  }
+
+  mImpl->mEventData->mInputStyleChangedQueue.Clear();
+}
+
+// public : Text-input Event Queuing.
+
+void Controller::KeyboardFocusGainEvent()
+{
+  DALI_ASSERT_DEBUG( mImpl->mEventData && "Unexpected KeyboardFocusGainEvent" );
+
+  if( NULL != mImpl->mEventData )
+  {
+    if( ( EventData::INACTIVE == mImpl->mEventData->mState ) ||
+        ( EventData::INTERRUPTED == mImpl->mEventData->mState ) )
     {
-      TextInsertedEvent();
+      mImpl->ChangeState( EventData::EDITING );
+      mImpl->mEventData->mUpdateCursorPosition = true; //If editing started without tap event, cursor update must be triggered.
     }
-    else if( ModifyEvent::TEXT_DELETED == event.type )
+    mImpl->NotifyImfMultiLineStatus();
+    if( mImpl->IsShowingPlaceholderText() )
     {
-      // Placeholder-text cannot be deleted
-      if( !mImpl->IsShowingPlaceholderText() )
-      {
-        TextDeletedEvent();
-      }
+      // Show alternative placeholder-text when editing
+      ShowPlaceholderText();
     }
+
+    mImpl->RequestRelayout();
   }
+}
+
+void Controller::KeyboardFocusLostEvent()
+{
+  DALI_ASSERT_DEBUG( mImpl->mEventData && "Unexpected KeyboardFocusLostEvent" );
 
   if( NULL != mImpl->mEventData )
   {
-    // When the text is being modified, delay cursor blinking
-    mImpl->mEventData->mDecorator->DelayCursorBlink();
-  }
+    if( EventData::INTERRUPTED != mImpl->mEventData->mState )
+    {
+      mImpl->ChangeState( EventData::INACTIVE );
 
-  // Discard temporary text
-  events.Clear();
+      if( !mImpl->IsShowingRealText() )
+      {
+        // Revert to regular placeholder-text when not editing
+        ShowPlaceholderText();
+      }
+    }
+  }
+  mImpl->RequestRelayout();
 }
 
-void Controller::ResetText()
+bool Controller::KeyEvent( const Dali::KeyEvent& keyEvent )
 {
-  // Reset buffers.
-  mImpl->mLogicalModel->mText.Clear();
+  DALI_ASSERT_DEBUG( mImpl->mEventData && "Unexpected KeyEvent" );
 
-  // We have cleared everything including the placeholder-text
-  mImpl->PlaceholderCleared();
+  bool textChanged( false );
 
-  mImpl->mTextUpdateInfo.mCharacterIndex = 0u;
-  mImpl->mTextUpdateInfo.mNumberOfCharactersToRemove = mImpl->mTextUpdateInfo.mPreviousNumberOfCharacters;
-  mImpl->mTextUpdateInfo.mNumberOfCharactersToAdd = 0u;
+  if( ( NULL != mImpl->mEventData ) &&
+      ( keyEvent.state == KeyEvent::Down ) )
+  {
+    int keyCode = keyEvent.keyCode;
+    const std::string& keyString = keyEvent.keyPressed;
 
-  // Clear any previous text.
-  mImpl->mTextUpdateInfo.mClearAll = true;
+    // Pre-process to separate modifying events from non-modifying input events.
+    if( Dali::DALI_KEY_ESCAPE == keyCode )
+    {
+      // Escape key is a special case which causes focus loss
+      KeyboardFocusLostEvent();
+    }
+    else if( ( Dali::DALI_KEY_CURSOR_LEFT  == keyCode ) ||
+             ( Dali::DALI_KEY_CURSOR_RIGHT == keyCode ) ||
+             ( Dali::DALI_KEY_CURSOR_UP    == keyCode ) ||
+             ( Dali::DALI_KEY_CURSOR_DOWN  == keyCode ) )
+    {
+      Event event( Event::CURSOR_KEY_EVENT );
+      event.p1.mInt = keyCode;
+      mImpl->mEventData->mEventQueue.push_back( event );
+    }
+    else if( Dali::DALI_KEY_BACKSPACE == keyCode )
+    {
+      textChanged = BackspaceKeyEvent();
+    }
+    else if( IsKey( keyEvent,  Dali::DALI_KEY_POWER ) )
+    {
+      mImpl->ChangeState( EventData::INTERRUPTED ); // State is not INACTIVE as expect to return to edit mode.
+      // Avoids calling the InsertText() method which can delete selected text
+    }
+    else if( IsKey( keyEvent, Dali::DALI_KEY_MENU ) ||
+             IsKey( keyEvent, Dali::DALI_KEY_HOME ) )
+    {
+      mImpl->ChangeState( EventData::INACTIVE );
+      // Menu/Home key behaviour does not allow edit mode to resume like Power key
+      // Avoids calling the InsertText() method which can delete selected text
+    }
+    else if( Dali::DALI_KEY_SHIFT_LEFT == keyCode )
+    {
+      // DALI_KEY_SHIFT_LEFT is the key code for the Left Shift. It's sent (by the imf?) when the predictive text is enabled
+      // and a character is typed after the type of a upper case latin character.
 
-  // The natural size needs to be re-calculated.
-  mImpl->mRecalculateNaturalSize = true;
+      // Do nothing.
+    }
+    else
+    {
+      DALI_LOG_INFO( gLogFilter, Debug::Verbose, "Controller::KeyEvent %p keyString %s\n", this, keyString.c_str() );
 
-  // Apply modifications to the model
-  mImpl->mOperationsPending = ALL_OPERATIONS;
-}
+      // IMF manager is no longer handling key-events
+      mImpl->ClearPreEditFlag();
 
-void Controller::ResetCursorPosition( CharacterIndex cursorIndex )
-{
-  // Reset the cursor position
-  if( NULL != mImpl->mEventData )
-  {
-    mImpl->mEventData->mPrimaryCursorPosition = cursorIndex;
+      InsertText( keyString, COMMIT );
+      textChanged = true;
+    }
 
-    // Update the cursor if it's in editing mode.
-    if( EventData::IsEditingState( mImpl->mEventData->mState )  )
+    if ( ( mImpl->mEventData->mState != EventData::INTERRUPTED ) &&
+         ( mImpl->mEventData->mState != EventData::INACTIVE ) &&
+         ( Dali::DALI_KEY_SHIFT_LEFT != keyCode ) )
     {
-      mImpl->mEventData->mUpdateCursorPosition = true;
+      // Should not change the state if the key is the shift send by the imf manager.
+      // Otherwise, when the state is SELECTING the text controller can't send the right
+      // surrounding info to the imf.
+      mImpl->ChangeState( EventData::EDITING );
     }
+
+    mImpl->RequestRelayout();
   }
-}
 
-void Controller::ResetScrollPosition()
-{
-  if( NULL != mImpl->mEventData )
+  if( textChanged &&
+      ( NULL != mImpl->mEditableControlInterface ) )
   {
-    // Reset the scroll position.
-    mImpl->mEventData->mScrollPosition = Vector2::ZERO;
-    mImpl->mEventData->mScrollAfterUpdatePosition = true;
+    // Do this last since it provides callbacks into application code
+    mImpl->mEditableControlInterface->TextChanged();
   }
-}
-
-void Controller::TextReplacedEvent()
-{
-  // The natural size needs to be re-calculated.
-  mImpl->mRecalculateNaturalSize = true;
 
-  // Apply modifications to the model
-  mImpl->mOperationsPending = ALL_OPERATIONS;
+  return true;
 }
 
-void Controller::TextInsertedEvent()
+void Controller::TapEvent( unsigned int tapCount, float x, float y )
 {
-  DALI_ASSERT_DEBUG( NULL != mImpl->mEventData && "Unexpected TextInsertedEvent" );
+  DALI_ASSERT_DEBUG( mImpl->mEventData && "Unexpected TapEvent" );
 
-  if( NULL == mImpl->mEventData )
+  if( NULL != mImpl->mEventData )
   {
-    return;
-  }
+    DALI_LOG_INFO( gLogFilter, Debug::Concise, "TapEvent state:%d \n", mImpl->mEventData->mState );
+    EventData::State state( mImpl->mEventData->mState );
+    bool relayoutNeeded( false );   // to avoid unnecessary relayouts when tapping an empty text-field
 
-  // The natural size needs to be re-calculated.
-  mImpl->mRecalculateNaturalSize = true;
+    if( mImpl->IsClipboardVisible() )
+    {
+      if( EventData::INACTIVE == state || EventData::EDITING == state)
+      {
+        mImpl->ChangeState( EventData::EDITING_WITH_GRAB_HANDLE );
+      }
+      relayoutNeeded = true;
+    }
+    else if( 1u == tapCount )
+    {
+      if( EventData::EDITING_WITH_POPUP == state || EventData::EDITING_WITH_PASTE_POPUP == state )
+      {
+        mImpl->ChangeState( EventData::EDITING_WITH_GRAB_HANDLE );  // If Popup shown hide it here so can be shown again if required.
+      }
 
-  // Apply modifications to the model; TODO - Optimize this
-  mImpl->mOperationsPending = ALL_OPERATIONS;
+      if( mImpl->IsShowingRealText() && ( EventData::INACTIVE != state ) )
+      {
+        mImpl->ChangeState( EventData::EDITING_WITH_GRAB_HANDLE );
+        relayoutNeeded = true;
+      }
+      else
+      {
+        if( mImpl->IsShowingPlaceholderText() && !mImpl->IsFocusedPlaceholderAvailable() )
+        {
+          // Hide placeholder text
+          ResetText();
+        }
 
-  // Queue a cursor reposition event; this must wait until after DoRelayout()
-  if( EventData::IsEditingState( mImpl->mEventData->mState ) )
-  {
-    mImpl->mEventData->mUpdateCursorPosition = true;
-    mImpl->mEventData->mScrollAfterUpdatePosition = true;
+        if( EventData::INACTIVE == state )
+        {
+          mImpl->ChangeState( EventData::EDITING );
+        }
+        else if( !mImpl->IsClipboardEmpty() )
+        {
+          mImpl->ChangeState( EventData::EDITING_WITH_POPUP );
+        }
+        relayoutNeeded = true;
+      }
+    }
+    else if( 2u == tapCount )
+    {
+      if( mImpl->mEventData->mSelectionEnabled &&
+          mImpl->IsShowingRealText() )
+      {
+        SelectEvent( x, y, false );
+      }
+    }
+    // Handles & cursors must be repositioned after Relayout() i.e. after the Model has been updated
+    if( relayoutNeeded )
+    {
+      Event event( Event::TAP_EVENT );
+      event.p1.mUint = tapCount;
+      event.p2.mFloat = x;
+      event.p3.mFloat = y;
+      mImpl->mEventData->mEventQueue.push_back( event );
+
+      mImpl->RequestRelayout();
+    }
   }
+
+  // Reset keyboard as tap event has occurred.
+  mImpl->ResetImfManager();
 }
 
-void Controller::TextDeletedEvent()
+void Controller::PanEvent( Gesture::State state, const Vector2& displacement )
 {
-  DALI_ASSERT_DEBUG( NULL != mImpl->mEventData && "Unexpected TextDeletedEvent" );
+  DALI_ASSERT_DEBUG( mImpl->mEventData && "Unexpected PanEvent" );
 
-  if( NULL == mImpl->mEventData )
+  if( NULL != mImpl->mEventData )
   {
-    return;
-  }
-
-  // The natural size needs to be re-calculated.
-  mImpl->mRecalculateNaturalSize = true;
-
-  // Apply modifications to the model; TODO - Optimize this
-  mImpl->mOperationsPending = ALL_OPERATIONS;
+    Event event( Event::PAN_EVENT );
+    event.p1.mInt = state;
+    event.p2.mFloat = displacement.x;
+    event.p3.mFloat = displacement.y;
+    mImpl->mEventData->mEventQueue.push_back( event );
 
-  // Queue a cursor reposition event; this must wait until after DoRelayout()
-  mImpl->mEventData->mUpdateCursorPosition = true;
-  if( 0u != mImpl->mLogicalModel->mText.Count() )
-  {
-    mImpl->mEventData->mScrollAfterDelete = true;
+    mImpl->RequestRelayout();
   }
 }
 
-bool Controller::DoRelayout( const Size& size,
-                             OperationsMask operationsRequired,
-                             Size& layoutSize )
+void Controller::LongPressEvent( Gesture::State state, float x, float y  )
 {
-  DALI_LOG_INFO( gLogFilter, Debug::Verbose, "-->Controller::DoRelayout %p size %f,%f\n", this, size.width, size.height );
-  bool viewUpdated( false );
-
-  // Calculate the operations to be done.
-  const OperationsMask operations = static_cast<OperationsMask>( mImpl->mOperationsPending & operationsRequired );
+  DALI_ASSERT_DEBUG( mImpl->mEventData && "Unexpected LongPressEvent" );
 
-  const CharacterIndex startIndex = mImpl->mTextUpdateInfo.mParagraphCharacterIndex;
-  const Length requestedNumberOfCharacters = mImpl->mTextUpdateInfo.mRequestedNumberOfCharacters;
-
-  if( LAYOUT & operations )
+  if( ( state == Gesture::Started ) &&
+      ( NULL != mImpl->mEventData ) )
   {
-    // Some vectors with data needed to layout and reorder may be void
-    // after the first time the text has been laid out.
-    // Fill the vectors again.
-
-    // Calculate the number of glyphs to layout.
-    const Vector<GlyphIndex>& charactersToGlyph = mImpl->mVisualModel->mCharactersToGlyph;
-    const Vector<Length>& glyphsPerCharacter = mImpl->mVisualModel->mGlyphsPerCharacter;
-    const GlyphIndex* const charactersToGlyphBuffer = charactersToGlyph.Begin();
-    const Length* const glyphsPerCharacterBuffer = glyphsPerCharacter.Begin();
-
-    const CharacterIndex lastIndex = startIndex + ( ( requestedNumberOfCharacters > 0u ) ? requestedNumberOfCharacters - 1u : 0u );
-    const GlyphIndex startGlyphIndex = mImpl->mTextUpdateInfo.mStartGlyphIndex;
-    const Length numberOfGlyphs = ( requestedNumberOfCharacters > 0u ) ? *( charactersToGlyphBuffer + lastIndex ) + *( glyphsPerCharacterBuffer + lastIndex ) - startGlyphIndex : 0u;
-    const Length totalNumberOfGlyphs = mImpl->mVisualModel->mGlyphs.Count();
-
-    if( 0u == totalNumberOfGlyphs )
+    if( !mImpl->IsShowingRealText() )
     {
-      if( UPDATE_ACTUAL_SIZE & operations )
-      {
-        mImpl->mVisualModel->SetLayoutSize( Size::ZERO );
-      }
-
-      // Nothing else to do if there is no glyphs.
-      DALI_LOG_INFO( gLogFilter, Debug::Verbose, "<--Controller::DoRelayout no glyphs, view updated true\n" );
-      return true;
+      Event event( Event::LONG_PRESS_EVENT );
+      event.p1.mInt = state;
+      mImpl->mEventData->mEventQueue.push_back( event );
+      mImpl->RequestRelayout();
     }
+    else
+    {
+      // The 1st long-press on inactive text-field is treated as tap
+      if( EventData::INACTIVE == mImpl->mEventData->mState )
+      {
+        mImpl->ChangeState( EventData::EDITING );
 
-    const Vector<LineBreakInfo>& lineBreakInfo = mImpl->mLogicalModel->mLineBreakInfo;
-    const Vector<WordBreakInfo>& wordBreakInfo = mImpl->mLogicalModel->mWordBreakInfo;
-    const Vector<CharacterDirection>& characterDirection = mImpl->mLogicalModel->mCharacterDirections;
-    const Vector<GlyphInfo>& glyphs = mImpl->mVisualModel->mGlyphs;
-    const Vector<CharacterIndex>& glyphsToCharactersMap = mImpl->mVisualModel->mGlyphsToCharacters;
-    const Vector<Length>& charactersPerGlyph = mImpl->mVisualModel->mCharactersPerGlyph;
-    const Character* const textBuffer = mImpl->mLogicalModel->mText.Begin();
-
-    // Set the layout parameters.
-    LayoutParameters layoutParameters( size,
-                                       textBuffer,
-                                       lineBreakInfo.Begin(),
-                                       wordBreakInfo.Begin(),
-                                       ( 0u != characterDirection.Count() ) ? characterDirection.Begin() : NULL,
-                                       glyphs.Begin(),
-                                       glyphsToCharactersMap.Begin(),
-                                       charactersPerGlyph.Begin(),
-                                       charactersToGlyphBuffer,
-                                       glyphsPerCharacterBuffer,
-                                       totalNumberOfGlyphs );
+        Event event( Event::TAP_EVENT );
+        event.p1.mUint = 1;
+        event.p2.mFloat = x;
+        event.p3.mFloat = y;
+        mImpl->mEventData->mEventQueue.push_back( event );
 
-    // Resize the vector of positions to have the same size than the vector of glyphs.
-    Vector<Vector2>& glyphPositions = mImpl->mVisualModel->mGlyphPositions;
-    glyphPositions.Resize( totalNumberOfGlyphs );
+        mImpl->RequestRelayout();
+      }
+      else if( !mImpl->IsClipboardVisible() )
+      {
+        // Reset the imf manger to commit the pre-edit before selecting the text.
+        mImpl->ResetImfManager();
 
-    // Whether the last character is a new paragraph character.
-    mImpl->mTextUpdateInfo.mIsLastCharacterNewParagraph =  TextAbstraction::IsNewParagraph( *( textBuffer + ( mImpl->mLogicalModel->mText.Count() - 1u ) ) );
-    layoutParameters.isLastNewParagraph = mImpl->mTextUpdateInfo.mIsLastCharacterNewParagraph;
+        SelectEvent( x, y, false );
+      }
+    }
+  }
+}
 
-    // The initial glyph and the number of glyphs to layout.
-    layoutParameters.startGlyphIndex = startGlyphIndex;
-    layoutParameters.numberOfGlyphs = numberOfGlyphs;
-    layoutParameters.startLineIndex = mImpl->mTextUpdateInfo.mStartLineIndex;
-    layoutParameters.estimatedNumberOfLines = mImpl->mTextUpdateInfo.mEstimatedNumberOfLines;
+ImfManager::ImfCallbackData Controller::OnImfEvent( ImfManager& imfManager, const ImfManager::ImfEventData& imfEvent )
+{
+  // Whether the text needs to be relaid-out.
+  bool requestRelayout = false;
 
-    // Update the visual model.
-    viewUpdated = mImpl->mLayoutEngine.LayoutText( layoutParameters,
-                                                   glyphPositions,
-                                                   mImpl->mVisualModel->mLines,
-                                                   layoutSize );
+  // Whether to retrieve the text and cursor position to be sent to the IMF manager.
+  bool retrieveText = false;
+  bool retrieveCursor = false;
 
-    if( viewUpdated )
+  switch( imfEvent.eventName )
+  {
+    case ImfManager::COMMIT:
     {
-      // Reorder the lines
-      if( REORDER & operations )
-      {
-        Vector<BidirectionalParagraphInfoRun>& bidirectionalInfo = mImpl->mLogicalModel->mBidirectionalParagraphInfo;
-        Vector<BidirectionalLineInfoRun>& bidirectionalLineInfo = mImpl->mLogicalModel->mBidirectionalLineInfo;
+      InsertText( imfEvent.predictiveString, Text::Controller::COMMIT );
+      requestRelayout = true;
+      retrieveCursor = true;
+      break;
+    }
+    case ImfManager::PREEDIT:
+    {
+      InsertText( imfEvent.predictiveString, Text::Controller::PRE_EDIT );
+      requestRelayout = true;
+      retrieveCursor = true;
+      break;
+    }
+    case ImfManager::DELETESURROUNDING:
+    {
+      const bool textDeleted = RemoveText( imfEvent.cursorOffset,
+                                           imfEvent.numberOfChars,
+                                           DONT_UPDATE_INPUT_STYLE );
 
-        // Check first if there are paragraphs with bidirectional info.
-        if( 0u != bidirectionalInfo.Count() )
+      if( textDeleted )
+      {
+        if( ( 0u != mImpl->mLogicalModel->mText.Count() ) ||
+            !mImpl->IsPlaceholderAvailable() )
         {
-          // Get the lines
-          const Length numberOfLines = mImpl->mVisualModel->mLines.Count();
-
-          // Reorder the lines.
-          bidirectionalLineInfo.Reserve( numberOfLines ); // Reserve because is not known yet how many lines have right to left characters.
-          ReorderLines( bidirectionalInfo,
-                        startIndex,
-                        requestedNumberOfCharacters,
-                        mImpl->mVisualModel->mLines,
-                        bidirectionalLineInfo );
-
-          // Set the bidirectional info per line into the layout parameters.
-          layoutParameters.lineBidirectionalInfoRunsBuffer = bidirectionalLineInfo.Begin();
-          layoutParameters.numberOfBidirectionalInfoRuns = bidirectionalLineInfo.Count();
-
-          // TODO: update the conversion map instead creating it from scratch.
-          //       Note this tables store indices to characters, so update the table means modify all the indices of the text after the last updated character.
-          //       It's better to refactor this. Store this table per line and don't update the indices.
-          //       For the cursor position probably is better to use the function instead creating a table.
-          // Set the bidirectional info into the model.
-          mImpl->mLogicalModel->SetVisualToLogicalMap( layoutParameters.lineBidirectionalInfoRunsBuffer,
-                                                       layoutParameters.numberOfBidirectionalInfoRuns,
-                                                       0u,
-                                                       mImpl->mLogicalModel->mText.Count() );
-
-          // Re-layout the text. Reorder those lines with right to left characters.
-          mImpl->mLayoutEngine.ReLayoutRightToLeftLines( layoutParameters,
-                                                         startIndex,
-                                                         requestedNumberOfCharacters,
-                                                         glyphPositions );
-
+          mImpl->QueueModifyEvent( ModifyEvent::TEXT_DELETED );
         }
-      } // REORDER
+        else
+        {
+          ShowPlaceholderText();
+        }
+        mImpl->mEventData->mUpdateCursorPosition = true;
+        mImpl->mEventData->mScrollAfterDelete = true;
 
-      // Sets the actual size.
-      if( UPDATE_ACTUAL_SIZE & operations )
-      {
-        mImpl->mVisualModel->SetLayoutSize( layoutSize );
+        requestRelayout = true;
       }
-    } // view updated
+      break;
+    }
+    case ImfManager::GETSURROUNDING:
+    {
+      retrieveText = true;
+      retrieveCursor = true;
+      break;
+    }
+    case ImfManager::VOID:
+    {
+      // do nothing
+      break;
+    }
+  } // end switch
 
-    // Store the size used to layout the text.
-    mImpl->mVisualModel->mControlSize = size;
-  }
-  else
+  if( requestRelayout )
   {
-    layoutSize = mImpl->mVisualModel->GetLayoutSize();
+    mImpl->mOperationsPending = ALL_OPERATIONS;
+    mImpl->RequestRelayout();
   }
 
-  if( ALIGN & operations )
+  std::string text;
+  CharacterIndex cursorPosition = 0u;
+  Length numberOfWhiteSpaces = 0u;
+
+  if( retrieveCursor )
   {
-    // The laid-out lines.
-    Vector<LineRun>& lines = mImpl->mVisualModel->mLines;
+    numberOfWhiteSpaces = mImpl->GetNumberOfWhiteSpaces( 0u );
 
-    mImpl->mLayoutEngine.Align( size,
-                                startIndex,
-                                requestedNumberOfCharacters,
-                                lines );
+    cursorPosition = mImpl->GetLogicalCursorPosition();
 
-    viewUpdated = true;
+    if( cursorPosition < numberOfWhiteSpaces )
+    {
+      cursorPosition = 0u;
+    }
+    else
+    {
+      cursorPosition -= numberOfWhiteSpaces;
+    }
   }
 
-  DALI_LOG_INFO( gLogFilter, Debug::Verbose, "<--Controller::DoRelayout, view updated %s\n", ( viewUpdated ? "true" : "false" ) );
-  return viewUpdated;
-}
-
-void Controller::SetMultiLineEnabled( bool enable )
-{
-  const LayoutEngine::Layout layout = enable ? LayoutEngine::MULTI_LINE_BOX : LayoutEngine::SINGLE_LINE_BOX;
-
-  if( layout != mImpl->mLayoutEngine.GetLayout() )
+  if( retrieveText )
   {
-    // Set the layout type.
-    mImpl->mLayoutEngine.SetLayout( layout );
-
-    // Set the flags to redo the layout operations
-    const OperationsMask layoutOperations =  static_cast<OperationsMask>( LAYOUT             |
-                                                                          UPDATE_ACTUAL_SIZE |
-                                                                          ALIGN              |
-                                                                          REORDER );
+    mImpl->GetText( numberOfWhiteSpaces, text );
+  }
 
-    mImpl->mOperationsPending = static_cast<OperationsMask>( mImpl->mOperationsPending | layoutOperations );
+  ImfManager::ImfCallbackData callbackData( ( retrieveText || retrieveCursor ), cursorPosition, text, false );
 
-    mImpl->RequestRelayout();
+  if( requestRelayout &&
+      ( NULL != mImpl->mEditableControlInterface ) )
+  {
+    // Do this last since it provides callbacks into application code
+    mImpl->mEditableControlInterface->TextChanged();
   }
-}
 
-bool Controller::IsMultiLineEnabled() const
-{
-  return LayoutEngine::MULTI_LINE_BOX == mImpl->mLayoutEngine.GetLayout();
+  return callbackData;
 }
 
-void Controller::SetHorizontalAlignment( LayoutEngine::HorizontalAlignment alignment )
+void Controller::PasteClipboardItemEvent()
 {
-  if( alignment != mImpl->mLayoutEngine.GetHorizontalAlignment() )
-  {
-    // Set the alignment.
-    mImpl->mLayoutEngine.SetHorizontalAlignment( alignment );
+  // Retrieve the clipboard contents first
+  ClipboardEventNotifier notifier( ClipboardEventNotifier::Get() );
+  std::string stringToPaste( notifier.GetContent() );
 
-    // Set the flag to redo the alignment operation.
-    mImpl->mOperationsPending = static_cast<OperationsMask>( mImpl->mOperationsPending | ALIGN );
+  // Commit the current pre-edit text; the contents of the clipboard should be appended
+  mImpl->ResetImfManager();
 
-    mImpl->RequestRelayout();
-  }
+  // Temporary disable hiding clipboard
+  mImpl->SetClipboardHideEnable( false );
+
+  // Paste
+  PasteText( stringToPaste );
+
+  mImpl->SetClipboardHideEnable( true );
 }
 
-LayoutEngine::HorizontalAlignment Controller::GetHorizontalAlignment() const
+// protected : Inherit from Text::Decorator::ControllerInterface.
+
+void Controller::GetTargetSize( Vector2& targetSize )
 {
-  return mImpl->mLayoutEngine.GetHorizontalAlignment();
+  targetSize = mImpl->mVisualModel->mControlSize;
 }
 
-void Controller::SetVerticalAlignment( LayoutEngine::VerticalAlignment alignment )
+void Controller::AddDecoration( Actor& actor, bool needsClipping )
 {
-  if( alignment != mImpl->mLayoutEngine.GetVerticalAlignment() )
+  if( NULL != mImpl->mEditableControlInterface )
   {
-    // Set the alignment.
-    mImpl->mLayoutEngine.SetVerticalAlignment( alignment );
-
-    mImpl->mOperationsPending = static_cast<OperationsMask>( mImpl->mOperationsPending | ALIGN );
-
-    mImpl->RequestRelayout();
+    mImpl->mEditableControlInterface->AddDecoration( actor, needsClipping );
   }
 }
 
-LayoutEngine::VerticalAlignment Controller::GetVerticalAlignment() const
-{
-  return mImpl->mLayoutEngine.GetVerticalAlignment();
-}
-
-void Controller::CalculateTextAlignment( const Size& controlSize )
+void Controller::DecorationEvent( HandleType handleType, HandleState state, float x, float y )
 {
-  Size layoutSize = mImpl->mVisualModel->GetLayoutSize();
+  DALI_ASSERT_DEBUG( mImpl->mEventData && "Unexpected DecorationEvent" );
 
-  if( fabsf( layoutSize.height ) < Math::MACHINE_EPSILON_1000 )
+  if( NULL != mImpl->mEventData )
   {
-    // Get the line height of the default font.
-    layoutSize.height = mImpl->GetDefaultFontLineHeight();
-  }
-
-  if( LayoutEngine::SINGLE_LINE_BOX == mImpl->mLayoutEngine.GetLayout() )
-  {
-    // Get the direction of the first character.
-    const CharacterDirection firstParagraphDirection = mImpl->mLogicalModel->GetCharacterDirection( 0u );
-
-    // If the first paragraph is right to left swap ALIGN_BEGIN and ALIGN_END;
-    LayoutEngine::HorizontalAlignment horizontalAlignment = mImpl->mLayoutEngine.GetHorizontalAlignment();
-    if( firstParagraphDirection )
+    switch( handleType )
     {
-      switch( horizontalAlignment )
+      case GRAB_HANDLE:
       {
-        case LayoutEngine::HORIZONTAL_ALIGN_BEGIN:
-        {
-          horizontalAlignment = LayoutEngine::HORIZONTAL_ALIGN_END;
-          break;
-        }
-        case LayoutEngine::HORIZONTAL_ALIGN_CENTER:
-        {
-          // Nothing to do.
-          break;
-        }
-        case LayoutEngine::HORIZONTAL_ALIGN_END:
-        {
-          horizontalAlignment = LayoutEngine::HORIZONTAL_ALIGN_BEGIN;
-          break;
-        }
-      }
-    }
+        Event event( Event::GRAB_HANDLE_EVENT );
+        event.p1.mUint  = state;
+        event.p2.mFloat = x;
+        event.p3.mFloat = y;
 
-    switch( horizontalAlignment )
-    {
-      case LayoutEngine::HORIZONTAL_ALIGN_BEGIN:
+        mImpl->mEventData->mEventQueue.push_back( event );
+        break;
+      }
+      case LEFT_SELECTION_HANDLE:
       {
-        mImpl->mAlignmentOffset.x = 0.f;
+        Event event( Event::LEFT_SELECTION_HANDLE_EVENT );
+        event.p1.mUint  = state;
+        event.p2.mFloat = x;
+        event.p3.mFloat = y;
+
+        mImpl->mEventData->mEventQueue.push_back( event );
         break;
       }
-      case LayoutEngine::HORIZONTAL_ALIGN_CENTER:
+      case RIGHT_SELECTION_HANDLE:
       {
-        mImpl->mAlignmentOffset.x = floorf( 0.5f * ( controlSize.width - layoutSize.width ) ); // try to avoid pixel alignment.
+        Event event( Event::RIGHT_SELECTION_HANDLE_EVENT );
+        event.p1.mUint  = state;
+        event.p2.mFloat = x;
+        event.p3.mFloat = y;
+
+        mImpl->mEventData->mEventQueue.push_back( event );
         break;
       }
-      case LayoutEngine::HORIZONTAL_ALIGN_END:
+      case LEFT_SELECTION_HANDLE_MARKER:
+      case RIGHT_SELECTION_HANDLE_MARKER:
       {
-        mImpl->mAlignmentOffset.x = controlSize.width - layoutSize.width;
+        // Markers do not move the handles.
         break;
       }
+      case HANDLE_TYPE_COUNT:
+      {
+        DALI_ASSERT_DEBUG( !"Controller::HandleEvent. Unexpected handle type" );
+      }
     }
-  }
 
-  const LayoutEngine::VerticalAlignment verticalAlignment = mImpl->mLayoutEngine.GetVerticalAlignment();
-  switch( verticalAlignment )
-  {
-    case LayoutEngine::VERTICAL_ALIGN_TOP:
-    {
-      mImpl->mAlignmentOffset.y = 0.f;
-      break;
-    }
-    case LayoutEngine::VERTICAL_ALIGN_CENTER:
-    {
-      mImpl->mAlignmentOffset.y = floorf( 0.5f * ( controlSize.height - layoutSize.height ) ); // try to avoid pixel alignment.
-      break;
-    }
-    case LayoutEngine::VERTICAL_ALIGN_BOTTOM:
-    {
-      mImpl->mAlignmentOffset.y = controlSize.height - layoutSize.height;
-      break;
-    }
+    mImpl->RequestRelayout();
   }
 }
 
-LayoutEngine& Controller::GetLayoutEngine()
-{
-  return mImpl->mLayoutEngine;
-}
-
-View& Controller::GetView()
-{
-  return mImpl->mView;
-}
+// protected : Inherit from TextSelectionPopup::TextPopupButtonCallbackInterface.
 
-void Controller::KeyboardFocusGainEvent()
+void Controller::TextPopupButtonTouched( Dali::Toolkit::TextSelectionPopup::Buttons button )
 {
-  DALI_ASSERT_DEBUG( mImpl->mEventData && "Unexpected KeyboardFocusGainEvent" );
-
-  if( NULL != mImpl->mEventData )
+  if( NULL == mImpl->mEventData )
   {
-    if( ( EventData::INACTIVE == mImpl->mEventData->mState ) ||
-        ( EventData::INTERRUPTED == mImpl->mEventData->mState ) )
-    {
-      mImpl->ChangeState( EventData::EDITING );
-      mImpl->mEventData->mUpdateCursorPosition = true; //If editing started without tap event, cursor update must be triggered.
-    }
-
-    if( mImpl->IsShowingPlaceholderText() )
-    {
-      // Show alternative placeholder-text when editing
-      ShowPlaceholderText();
-    }
-
-    mImpl->RequestRelayout();
+    return;
   }
-}
-
-void Controller::KeyboardFocusLostEvent()
-{
-  DALI_ASSERT_DEBUG( mImpl->mEventData && "Unexpected KeyboardFocusLostEvent" );
 
-  if( NULL != mImpl->mEventData )
+  switch( button )
   {
-    if( EventData::INTERRUPTED != mImpl->mEventData->mState )
+    case Toolkit::TextSelectionPopup::CUT:
     {
-      mImpl->ChangeState( EventData::INACTIVE );
+      mImpl->SendSelectionToClipboard( true ); // Synchronous call to modify text
+      mImpl->mOperationsPending = ALL_OPERATIONS;
 
-      if( !mImpl->IsShowingRealText() )
+      if( ( 0u != mImpl->mLogicalModel->mText.Count() ) ||
+          !mImpl->IsPlaceholderAvailable() )
+      {
+        mImpl->QueueModifyEvent( ModifyEvent::TEXT_DELETED );
+      }
+      else
       {
-        // Revert to regular placeholder-text when not editing
         ShowPlaceholderText();
       }
-    }
-  }
-  mImpl->RequestRelayout();
-}
-
-bool Controller::KeyEvent( const Dali::KeyEvent& keyEvent )
-{
-  DALI_ASSERT_DEBUG( mImpl->mEventData && "Unexpected KeyEvent" );
 
-  bool textChanged( false );
+      mImpl->mEventData->mUpdateCursorPosition = true;
+      mImpl->mEventData->mScrollAfterDelete = true;
 
-  if( ( NULL != mImpl->mEventData ) &&
-      ( keyEvent.state == KeyEvent::Down ) )
-  {
-    int keyCode = keyEvent.keyCode;
-    const std::string& keyString = keyEvent.keyPressed;
+      mImpl->RequestRelayout();
 
-    // Pre-process to separate modifying events from non-modifying input events.
-    if( Dali::DALI_KEY_ESCAPE == keyCode )
-    {
-      // Escape key is a special case which causes focus loss
-      KeyboardFocusLostEvent();
-    }
-    else if( ( Dali::DALI_KEY_CURSOR_LEFT  == keyCode ) ||
-             ( Dali::DALI_KEY_CURSOR_RIGHT == keyCode ) ||
-             ( Dali::DALI_KEY_CURSOR_UP    == keyCode ) ||
-             ( Dali::DALI_KEY_CURSOR_DOWN  == keyCode ) )
-    {
-      Event event( Event::CURSOR_KEY_EVENT );
-      event.p1.mInt = keyCode;
-      mImpl->mEventData->mEventQueue.push_back( event );
+      if( NULL != mImpl->mEditableControlInterface )
+      {
+        mImpl->mEditableControlInterface->TextChanged();
+      }
+      break;
     }
-    else if( Dali::DALI_KEY_BACKSPACE == keyCode )
+    case Toolkit::TextSelectionPopup::COPY:
     {
-      textChanged = BackspaceKeyEvent();
+      mImpl->SendSelectionToClipboard( false ); // Text not modified
+
+      mImpl->mEventData->mUpdateCursorPosition = true;
+
+      mImpl->RequestRelayout(); // Cursor, Handles, Selection Highlight, Popup
+      break;
     }
-    else if( IsKey( keyEvent,  Dali::DALI_KEY_POWER ) )
+    case Toolkit::TextSelectionPopup::PASTE:
     {
-      mImpl->ChangeState( EventData::INTERRUPTED ); // State is not INACTIVE as expect to return to edit mode.
-      // Avoids calling the InsertText() method which can delete selected text
+      mImpl->RequestGetTextFromClipboard(); // Request clipboard service to retrieve an item
+      break;
     }
-    else if( IsKey( keyEvent, Dali::DALI_KEY_MENU ) ||
-             IsKey( keyEvent, Dali::DALI_KEY_HOME ) )
+    case Toolkit::TextSelectionPopup::SELECT:
     {
-      mImpl->ChangeState( EventData::INACTIVE );
-      // Menu/Home key behaviour does not allow edit mode to resume like Power key
-      // Avoids calling the InsertText() method which can delete selected text
+      const Vector2& currentCursorPosition = mImpl->mEventData->mDecorator->GetPosition( PRIMARY_CURSOR );
+
+      if( mImpl->mEventData->mSelectionEnabled )
+      {
+        // Creates a SELECT event.
+        SelectEvent( currentCursorPosition.x, currentCursorPosition.y, false );
+      }
+      break;
     }
-    else if( Dali::DALI_KEY_SHIFT_LEFT == keyCode )
+    case Toolkit::TextSelectionPopup::SELECT_ALL:
     {
-      // DALI_KEY_SHIFT_LEFT is the key code for the Left Shift. It's sent (by the imf?) when the predictive text is enabled
-      // and a character is typed after the type of a upper case latin character.
-
-      // Do nothing.
+      // Creates a SELECT_ALL event
+      SelectEvent( 0.f, 0.f, true );
+      break;
     }
-    else
+    case Toolkit::TextSelectionPopup::CLIPBOARD:
     {
-      DALI_LOG_INFO( gLogFilter, Debug::Verbose, "Controller::KeyEvent %p keyString %s\n", this, keyString.c_str() );
-
-      // IMF manager is no longer handling key-events
-      mImpl->ClearPreEditFlag();
-
-      InsertText( keyString, COMMIT );
-      textChanged = true;
+      mImpl->ShowClipboard();
+      break;
     }
-
-    if( ( mImpl->mEventData->mState != EventData::INTERRUPTED ) &&
-        ( mImpl->mEventData->mState != EventData::INACTIVE ) )
+    case Toolkit::TextSelectionPopup::NONE:
     {
-      mImpl->ChangeState( EventData::EDITING );
+      // Nothing to do.
+      break;
     }
-
-    mImpl->RequestRelayout();
-  }
-
-  if( textChanged )
-  {
-    // Do this last since it provides callbacks into application code
-    mImpl->mControlInterface.TextChanged();
   }
-
-  return true;
 }
 
+// private : Update.
+
 void Controller::InsertText( const std::string& text, Controller::InsertType type )
 {
   bool removedPrevious( false );
@@ -1803,26 +2149,28 @@ void Controller::InsertText( const std::string& text, Controller::InsertType typ
   // TODO: At the moment the underline runs are only for pre-edit.
   mImpl->mVisualModel->mUnderlineRuns.Clear();
 
-  Vector<Character> utf32Characters;
-  Length characterCount( 0u );
+  // Keep the current number of characters.
+  const Length currentNumberOfCharacters = mImpl->IsShowingRealText() ? mImpl->mLogicalModel->mText.Count() : 0u;
 
-  // Remove the previous IMF pre-edit (predicitive text)
-  if( mImpl->mEventData->mPreEditFlag &&
-      ( 0u != mImpl->mEventData->mPreEditLength ) )
+  // Remove the previous IMF pre-edit.
+  if( mImpl->mEventData->mPreEditFlag && ( 0u != mImpl->mEventData->mPreEditLength ) )
   {
-    const CharacterIndex offset = mImpl->mEventData->mPrimaryCursorPosition - mImpl->mEventData->mPreEditStartPosition;
-
-    removedPrevious = RemoveText( -static_cast<int>( offset ), mImpl->mEventData->mPreEditLength );
+    removedPrevious = RemoveText( -static_cast<int>( mImpl->mEventData->mPrimaryCursorPosition - mImpl->mEventData->mPreEditStartPosition ),
+                                  mImpl->mEventData->mPreEditLength,
+                                  DONT_UPDATE_INPUT_STYLE );
 
     mImpl->mEventData->mPrimaryCursorPosition = mImpl->mEventData->mPreEditStartPosition;
     mImpl->mEventData->mPreEditLength = 0u;
   }
   else
   {
-    // Remove the previous Selection
+    // Remove the previous Selection.
     removedPrevious = RemoveSelectedText();
   }
 
+  Vector<Character> utf32Characters;
+  Length characterCount = 0u;
+
   if( !text.empty() )
   {
     //  Convert text into UTF-32
@@ -1860,7 +2208,7 @@ void Controller::InsertText( const std::string& text, Controller::InsertType typ
     {
       if( !mImpl->mEventData->mPreEditFlag )
       {
-        DALI_LOG_INFO( gLogFilter, Debug::Verbose, "Entered PreEdit state" );
+        DALI_LOG_INFO( gLogFilter, Debug::Verbose, "Entered PreEdit state\n" );
 
         // Record the start of the pre-edit text
         mImpl->mEventData->mPreEditStartPosition = mImpl->mEventData->mPrimaryCursorPosition;
@@ -1891,10 +2239,11 @@ void Controller::InsertText( const std::string& text, Controller::InsertType typ
 
     // Retrieve the text's style for the given index.
     InputStyle style;
+    mImpl->RetrieveDefaultInputStyle( style );
     mImpl->mLogicalModel->RetrieveStyle( styleIndex, style );
 
     // Whether to add a new text color run.
-    const bool addColorRun = style.textColor != mImpl->mEventData->mInputStyle.textColor;
+    const bool addColorRun = ( style.textColor != mImpl->mEventData->mInputStyle.textColor );
 
     // Whether to add a new font run.
     const bool addFontNameRun = style.familyName != mImpl->mEventData->mInputStyle.familyName;
@@ -1986,6 +2335,8 @@ void Controller::InsertText( const std::string& text, Controller::InsertType typ
     DALI_LOG_INFO( gLogFilter, Debug::Verbose, "Inserted %d characters, new size %d new cursor %d\n", maxSizeOfNewText, mImpl->mLogicalModel->mText.Count(), mImpl->mEventData->mPrimaryCursorPosition );
   }
 
+  const Length numberOfCharacters = mImpl->IsShowingRealText() ? mImpl->mLogicalModel->mText.Count() : 0u;
+
   if( ( 0u == mImpl->mLogicalModel->mText.Count() ) &&
       mImpl->IsPlaceholderAvailable() )
   {
@@ -1999,6 +2350,16 @@ void Controller::InsertText( const std::string& text, Controller::InsertType typ
   {
     // Queue an inserted event
     mImpl->QueueModifyEvent( ModifyEvent::TEXT_INSERTED );
+
+    mImpl->mEventData->mUpdateCursorPosition = true;
+    if( numberOfCharacters < currentNumberOfCharacters )
+    {
+      mImpl->mEventData->mScrollAfterDelete = true;
+    }
+    else
+    {
+      mImpl->mEventData->mScrollAfterUpdatePosition = true;
+    }
   }
 
   if( maxLengthReached )
@@ -2007,437 +2368,449 @@ void Controller::InsertText( const std::string& text, Controller::InsertType typ
 
     mImpl->ResetImfManager();
 
-    // Do this last since it provides callbacks into application code
-    mImpl->mControlInterface.MaxLengthReached();
+    if( NULL != mImpl->mEditableControlInterface )
+    {
+      // Do this last since it provides callbacks into application code
+      mImpl->mEditableControlInterface->MaxLengthReached();
+    }
   }
 }
 
-bool Controller::RemoveSelectedText()
+void Controller::PasteText( const std::string& stringToPaste )
 {
-  bool textRemoved( false );
+  InsertText( stringToPaste, Text::Controller::COMMIT );
+  mImpl->ChangeState( EventData::EDITING );
+  mImpl->RequestRelayout();
 
-  if( EventData::SELECTING == mImpl->mEventData->mState )
+  if( NULL != mImpl->mEditableControlInterface )
   {
-    std::string removedString;
-    mImpl->RetrieveSelection( removedString, true );
-
-    if( !removedString.empty() )
-    {
-      textRemoved = true;
-      mImpl->ChangeState( EventData::EDITING );
-    }
+    // Do this last since it provides callbacks into application code
+    mImpl->mEditableControlInterface->TextChanged();
   }
-
-  return textRemoved;
 }
 
-void Controller::TapEvent( unsigned int tapCount, float x, float y )
+bool Controller::RemoveText( int cursorOffset,
+                             int numberOfCharacters,
+                             UpdateInputStyleType type )
 {
-  DALI_ASSERT_DEBUG( mImpl->mEventData && "Unexpected TapEvent" );
+  bool removed = false;
 
-  if( NULL != mImpl->mEventData )
+  if( NULL == mImpl->mEventData )
   {
-    DALI_LOG_INFO( gLogFilter, Debug::Concise, "TapEvent state:%d \n", mImpl->mEventData->mState );
+    return removed;
+  }
 
-    if( 1u == tapCount )
-    {
-      // This is to avoid unnecessary relayouts when tapping an empty text-field
-      bool relayoutNeeded( false );
+  DALI_LOG_INFO( gLogFilter, Debug::General, "Controller::RemoveText %p mText.Count() %d cursor %d cursorOffset %d numberOfCharacters %d\n",
+                 this, mImpl->mLogicalModel->mText.Count(), mImpl->mEventData->mPrimaryCursorPosition, cursorOffset, numberOfCharacters );
 
-      if( ( EventData::EDITING_WITH_PASTE_POPUP == mImpl->mEventData->mState ) ||
-          ( EventData::EDITING_WITH_PASTE_POPUP == mImpl->mEventData->mState ) )
-      {
-        mImpl->ChangeState( EventData::EDITING_WITH_GRAB_HANDLE);  // If Popup shown hide it here so can be shown again if required.
-      }
+  if( !mImpl->IsShowingPlaceholderText() )
+  {
+    // Delete at current cursor position
+    Vector<Character>& currentText = mImpl->mLogicalModel->mText;
+    CharacterIndex& oldCursorIndex = mImpl->mEventData->mPrimaryCursorPosition;
 
-      if( mImpl->IsShowingRealText() && ( EventData::INACTIVE != mImpl->mEventData->mState ) )
-      {
-        // Already in an active state so show a popup
-        if( !mImpl->IsClipboardEmpty() )
-        {
-          // Shows Paste popup but could show full popup with Selection options. ( EDITING_WITH_POPUP )
-          mImpl->ChangeState( EventData::EDITING_WITH_PASTE_POPUP );
-        }
-        else
-        {
-          mImpl->ChangeState( EventData::EDITING_WITH_GRAB_HANDLE );
-        }
-        relayoutNeeded = true;
-      }
-      else
-      {
-        if( mImpl->IsShowingPlaceholderText() && !mImpl->IsFocusedPlaceholderAvailable() )
-        {
-          // Hide placeholder text
-          ResetText();
-        }
-
-        if( EventData::INACTIVE == mImpl->mEventData->mState )
-        {
-          mImpl->ChangeState( EventData::EDITING );
-        }
-        else if( !mImpl->IsClipboardEmpty() )
-        {
-          mImpl->ChangeState( EventData::EDITING_WITH_POPUP );
-        }
-        relayoutNeeded = true;
-      }
+    CharacterIndex cursorIndex = oldCursorIndex;
 
-      // Handles & cursors must be repositioned after Relayout() i.e. after the Model has been updated
-      if( relayoutNeeded )
-      {
-        Event event( Event::TAP_EVENT );
-        event.p1.mUint = tapCount;
-        event.p2.mFloat = x;
-        event.p3.mFloat = y;
-        mImpl->mEventData->mEventQueue.push_back( event );
+    // Validate the cursor position & number of characters
+    if( static_cast< CharacterIndex >( std::abs( cursorOffset ) ) <= cursorIndex )
+    {
+      cursorIndex = oldCursorIndex + cursorOffset;
+    }
 
-        mImpl->RequestRelayout();
-      }
+    if( ( cursorIndex + numberOfCharacters ) > currentText.Count() )
+    {
+      numberOfCharacters = currentText.Count() - cursorIndex;
     }
-    else if( 2u == tapCount )
+
+    if( ( cursorIndex + numberOfCharacters ) <= mImpl->mTextUpdateInfo.mPreviousNumberOfCharacters )
     {
-      if( mImpl->mEventData->mSelectionEnabled &&
-          mImpl->IsShowingRealText() )
+      // Mark the paragraphs to be updated.
+      mImpl->mTextUpdateInfo.mCharacterIndex = std::min( cursorIndex, mImpl->mTextUpdateInfo.mCharacterIndex );
+      mImpl->mTextUpdateInfo.mNumberOfCharactersToRemove += numberOfCharacters;
+
+      // Update the input style and remove the text's style before removing the text.
+
+      if( UPDATE_INPUT_STYLE == type )
       {
-        SelectEvent( x, y, false );
-      }
-    }
-  }
+        // Keep a copy of the current input style.
+        InputStyle currentInputStyle;
+        currentInputStyle.Copy( mImpl->mEventData->mInputStyle );
 
-  // Reset keyboard as tap event has occurred.
-  mImpl->ResetImfManager();
-}
+        // Set first the default input style.
+        mImpl->RetrieveDefaultInputStyle( mImpl->mEventData->mInputStyle );
 
-void Controller::PanEvent( Gesture::State state, const Vector2& displacement )
-        // Show cursor and grabhandle on first tap, this matches the behaviour of tapping when already editing
-{
-  DALI_ASSERT_DEBUG( mImpl->mEventData && "Unexpected PanEvent" );
+        // Update the input style.
+        mImpl->mLogicalModel->RetrieveStyle( cursorIndex, mImpl->mEventData->mInputStyle );
 
-  if( NULL != mImpl->mEventData )
-  {
-    Event event( Event::PAN_EVENT );
-    event.p1.mInt = state;
-    event.p2.mFloat = displacement.x;
-    event.p3.mFloat = displacement.y;
-    mImpl->mEventData->mEventQueue.push_back( event );
+        // Compare if the input style has changed.
+        const bool hasInputStyleChanged = !currentInputStyle.Equal( mImpl->mEventData->mInputStyle );
 
-    mImpl->RequestRelayout();
-  }
-}
+        if( hasInputStyleChanged )
+        {
+          const InputStyle::Mask styleChangedMask = currentInputStyle.GetInputStyleChangeMask( mImpl->mEventData->mInputStyle );
+          // Queue the input style changed signal.
+          mImpl->mEventData->mInputStyleChangedQueue.PushBack( styleChangedMask );
+        }
+      }
 
-void Controller::LongPressEvent( Gesture::State state, float x, float y  )
-{
-  DALI_ASSERT_DEBUG( mImpl->mEventData && "Unexpected LongPressEvent" );
+      // Updates the text style runs by removing characters. Runs with no characters are removed.
+      mImpl->mLogicalModel->UpdateTextStyleRuns( cursorIndex, -numberOfCharacters );
 
-  if( ( state == Gesture::Started ) &&
-      ( NULL != mImpl->mEventData ) )
-  {
-    if( !mImpl->IsShowingRealText() )
-    {
-      Event event( Event::LONG_PRESS_EVENT );
-      event.p1.mInt = state;
-      mImpl->mEventData->mEventQueue.push_back( event );
-      mImpl->RequestRelayout();
-    }
-    else
-    {
-      // The 1st long-press on inactive text-field is treated as tap
-      if( EventData::INACTIVE == mImpl->mEventData->mState )
-      {
-        mImpl->ChangeState( EventData::EDITING );
+      // Remove the characters.
+      Vector<Character>::Iterator first = currentText.Begin() + cursorIndex;
+      Vector<Character>::Iterator last  = first + numberOfCharacters;
 
-        Event event( Event::TAP_EVENT );
-        event.p1.mUint = 1;
-        event.p2.mFloat = x;
-        event.p3.mFloat = y;
-        mImpl->mEventData->mEventQueue.push_back( event );
+      currentText.Erase( first, last );
 
-        mImpl->RequestRelayout();
-      }
-      else
-      {
-        // Reset the imf manger to commit the pre-edit before selecting the text.
-        mImpl->ResetImfManager();
+      // Cursor position retreat
+      oldCursorIndex = cursorIndex;
 
-        SelectEvent( x, y, false );
-      }
+      mImpl->mEventData->mScrollAfterDelete = true;
+
+      DALI_LOG_INFO( gLogFilter, Debug::General, "Controller::RemoveText %p removed %d\n", this, numberOfCharacters );
+      removed = true;
     }
   }
+
+  return removed;
 }
 
-void Controller::SelectEvent( float x, float y, bool selectAll )
+bool Controller::RemoveSelectedText()
 {
-  DALI_LOG_INFO( gLogFilter, Debug::Verbose, "Controller::SelectEvent\n" );
+  bool textRemoved( false );
 
-  if( NULL != mImpl->mEventData )
+  if( EventData::SELECTING == mImpl->mEventData->mState )
   {
-    mImpl->ChangeState( EventData::SELECTING );
+    std::string removedString;
+    mImpl->RetrieveSelection( removedString, true );
 
-    if( selectAll )
-    {
-      Event event( Event::SELECT_ALL );
-      mImpl->mEventData->mEventQueue.push_back( event );
-    }
-    else
+    if( !removedString.empty() )
     {
-      Event event( Event::SELECT );
-      event.p2.mFloat = x;
-      event.p3.mFloat = y;
-      mImpl->mEventData->mEventQueue.push_back( event );
+      textRemoved = true;
+      mImpl->ChangeState( EventData::EDITING );
     }
-
-    mImpl->RequestRelayout();
   }
-}
 
-void Controller::GetTargetSize( Vector2& targetSize )
-{
-  targetSize = mImpl->mVisualModel->mControlSize;
+  return textRemoved;
 }
 
-void Controller::AddDecoration( Actor& actor, bool needsClipping )
-{
-  mImpl->mControlInterface.AddDecoration( actor, needsClipping );
-}
+// private : Relayout.
 
-void Controller::DecorationEvent( HandleType handleType, HandleState state, float x, float y )
+bool Controller::DoRelayout( const Size& size,
+                             OperationsMask operationsRequired,
+                             Size& layoutSize )
 {
-  DALI_ASSERT_DEBUG( mImpl->mEventData && "Unexpected DecorationEvent" );
+  DALI_LOG_INFO( gLogFilter, Debug::Verbose, "-->Controller::DoRelayout %p size %f,%f\n", this, size.width, size.height );
+  bool viewUpdated( false );
 
-  if( NULL != mImpl->mEventData )
+  // Calculate the operations to be done.
+  const OperationsMask operations = static_cast<OperationsMask>( mImpl->mOperationsPending & operationsRequired );
+
+  const CharacterIndex startIndex = mImpl->mTextUpdateInfo.mParagraphCharacterIndex;
+  const Length requestedNumberOfCharacters = mImpl->mTextUpdateInfo.mRequestedNumberOfCharacters;
+
+  // Get the current layout size.
+  layoutSize = mImpl->mVisualModel->GetLayoutSize();
+
+  if( NO_OPERATION != ( LAYOUT & operations ) )
   {
-    switch( handleType )
-    {
-      case GRAB_HANDLE:
-      {
-        Event event( Event::GRAB_HANDLE_EVENT );
-        event.p1.mUint  = state;
-        event.p2.mFloat = x;
-        event.p3.mFloat = y;
+    DALI_LOG_INFO( gLogFilter, Debug::Verbose, "-->Controller::DoRelayout LAYOUT & operations\n");
 
-        mImpl->mEventData->mEventQueue.push_back( event );
-        break;
-      }
-      case LEFT_SELECTION_HANDLE:
-      {
-        Event event( Event::LEFT_SELECTION_HANDLE_EVENT );
-        event.p1.mUint  = state;
-        event.p2.mFloat = x;
-        event.p3.mFloat = y;
+    // Some vectors with data needed to layout and reorder may be void
+    // after the first time the text has been laid out.
+    // Fill the vectors again.
 
-        mImpl->mEventData->mEventQueue.push_back( event );
-        break;
-      }
-      case RIGHT_SELECTION_HANDLE:
-      {
-        Event event( Event::RIGHT_SELECTION_HANDLE_EVENT );
-        event.p1.mUint  = state;
-        event.p2.mFloat = x;
-        event.p3.mFloat = y;
+    // Calculate the number of glyphs to layout.
+    const Vector<GlyphIndex>& charactersToGlyph = mImpl->mVisualModel->mCharactersToGlyph;
+    const Vector<Length>& glyphsPerCharacter = mImpl->mVisualModel->mGlyphsPerCharacter;
+    const GlyphIndex* const charactersToGlyphBuffer = charactersToGlyph.Begin();
+    const Length* const glyphsPerCharacterBuffer = glyphsPerCharacter.Begin();
 
-        mImpl->mEventData->mEventQueue.push_back( event );
-        break;
-      }
-      case LEFT_SELECTION_HANDLE_MARKER:
-      case RIGHT_SELECTION_HANDLE_MARKER:
-      {
-        // Markers do not move the handles.
-        break;
-      }
-      case HANDLE_TYPE_COUNT:
+    const CharacterIndex lastIndex = startIndex + ( ( requestedNumberOfCharacters > 0u ) ? requestedNumberOfCharacters - 1u : 0u );
+    const GlyphIndex startGlyphIndex = mImpl->mTextUpdateInfo.mStartGlyphIndex;
+    const Length numberOfGlyphs = ( requestedNumberOfCharacters > 0u ) ? *( charactersToGlyphBuffer + lastIndex ) + *( glyphsPerCharacterBuffer + lastIndex ) - startGlyphIndex : 0u;
+    const Length totalNumberOfGlyphs = mImpl->mVisualModel->mGlyphs.Count();
+
+    if( 0u == totalNumberOfGlyphs )
+    {
+      if( NO_OPERATION != ( UPDATE_LAYOUT_SIZE & operations ) )
       {
-        DALI_ASSERT_DEBUG( !"Controller::HandleEvent. Unexpected handle type" );
+        mImpl->mVisualModel->SetLayoutSize( Size::ZERO );
       }
+
+      // Nothing else to do if there is no glyphs.
+      DALI_LOG_INFO( gLogFilter, Debug::Verbose, "<--Controller::DoRelayout no glyphs, view updated true\n" );
+      return true;
     }
 
-    mImpl->RequestRelayout();
-  }
-}
+    const Vector<LineBreakInfo>& lineBreakInfo = mImpl->mLogicalModel->mLineBreakInfo;
+    const Vector<WordBreakInfo>& wordBreakInfo = mImpl->mLogicalModel->mWordBreakInfo;
+    const Vector<CharacterDirection>& characterDirection = mImpl->mLogicalModel->mCharacterDirections;
+    const Vector<GlyphInfo>& glyphs = mImpl->mVisualModel->mGlyphs;
+    const Vector<CharacterIndex>& glyphsToCharactersMap = mImpl->mVisualModel->mGlyphsToCharacters;
+    const Vector<Length>& charactersPerGlyph = mImpl->mVisualModel->mCharactersPerGlyph;
+    const Character* const textBuffer = mImpl->mLogicalModel->mText.Begin();
 
-void Controller::PasteText( const std::string& stringToPaste )
-{
-  InsertText( stringToPaste, Text::Controller::COMMIT );
-  mImpl->ChangeState( EventData::EDITING );
-  mImpl->RequestRelayout();
+    // Set the layout parameters.
+    LayoutParameters layoutParameters( size,
+                                       textBuffer,
+                                       lineBreakInfo.Begin(),
+                                       wordBreakInfo.Begin(),
+                                       ( 0u != characterDirection.Count() ) ? characterDirection.Begin() : NULL,
+                                       glyphs.Begin(),
+                                       glyphsToCharactersMap.Begin(),
+                                       charactersPerGlyph.Begin(),
+                                       charactersToGlyphBuffer,
+                                       glyphsPerCharacterBuffer,
+                                       totalNumberOfGlyphs );
 
-  // Do this last since it provides callbacks into application code
-  mImpl->mControlInterface.TextChanged();
-}
+    // Resize the vector of positions to have the same size than the vector of glyphs.
+    Vector<Vector2>& glyphPositions = mImpl->mVisualModel->mGlyphPositions;
+    glyphPositions.Resize( totalNumberOfGlyphs );
 
-void Controller::PasteClipboardItemEvent()
-{
-  // Retrieve the clipboard contents first
-  ClipboardEventNotifier notifier( ClipboardEventNotifier::Get() );
-  std::string stringToPaste( notifier.GetContent() );
+    // Whether the last character is a new paragraph character.
+    mImpl->mTextUpdateInfo.mIsLastCharacterNewParagraph =  TextAbstraction::IsNewParagraph( *( textBuffer + ( mImpl->mLogicalModel->mText.Count() - 1u ) ) );
+    layoutParameters.isLastNewParagraph = mImpl->mTextUpdateInfo.mIsLastCharacterNewParagraph;
 
-  // Commit the current pre-edit text; the contents of the clipboard should be appended
-  mImpl->ResetImfManager();
+    // The initial glyph and the number of glyphs to layout.
+    layoutParameters.startGlyphIndex = startGlyphIndex;
+    layoutParameters.numberOfGlyphs = numberOfGlyphs;
+    layoutParameters.startLineIndex = mImpl->mTextUpdateInfo.mStartLineIndex;
+    layoutParameters.estimatedNumberOfLines = mImpl->mTextUpdateInfo.mEstimatedNumberOfLines;
 
-  // Paste
-  PasteText( stringToPaste );
-}
+    // Update the visual model.
+    Size newLayoutSize;
+    viewUpdated = mImpl->mLayoutEngine.LayoutText( layoutParameters,
+                                                   glyphPositions,
+                                                   mImpl->mVisualModel->mLines,
+                                                   newLayoutSize );
 
-void Controller::TextPopupButtonTouched( Dali::Toolkit::TextSelectionPopup::Buttons button )
-{
-  if( NULL == mImpl->mEventData )
-  {
-    return;
-  }
+    viewUpdated = viewUpdated || ( newLayoutSize != layoutSize );
 
-  switch( button )
-  {
-    case Toolkit::TextSelectionPopup::CUT:
+    if( viewUpdated )
     {
-      mImpl->SendSelectionToClipboard( true ); // Synchronous call to modify text
-      mImpl->mOperationsPending = ALL_OPERATIONS;
+      layoutSize = newLayoutSize;
 
-      // This is to reset the virtual keyboard to Upper-case
-      if( 0u == mImpl->mLogicalModel->mText.Count() )
+      if ( NO_OPERATION != ( UPDATE_DIRECTION & operations ) )
       {
-        NotifyImfManager();
+        mImpl->mAutoScrollDirectionRTL = false;
       }
 
-      if( ( 0u != mImpl->mLogicalModel->mText.Count() ) ||
-          !mImpl->IsPlaceholderAvailable() )
-      {
-        mImpl->QueueModifyEvent( ModifyEvent::TEXT_DELETED );
-      }
-      else
+      // Reorder the lines
+      if( NO_OPERATION != ( REORDER & operations ) )
       {
-        ShowPlaceholderText();
-        mImpl->mEventData->mUpdateCursorPosition = true;
-      }
-      mImpl->RequestRelayout();
-      mImpl->mControlInterface.TextChanged();
-      break;
-    }
-    case Toolkit::TextSelectionPopup::COPY:
-    {
-      mImpl->SendSelectionToClipboard( false ); // Text not modified
-      mImpl->RequestRelayout(); // Handles, Selection Highlight, Popup
-      break;
-    }
-    case Toolkit::TextSelectionPopup::PASTE:
-    {
-      std::string stringToPaste("");
-      mImpl->GetTextFromClipboard( 0, stringToPaste ); // Paste latest item from system clipboard
-      PasteText( stringToPaste );
-      break;
-    }
-    case Toolkit::TextSelectionPopup::SELECT:
-    {
-      const Vector2& currentCursorPosition = mImpl->mEventData->mDecorator->GetPosition( PRIMARY_CURSOR );
+        Vector<BidirectionalParagraphInfoRun>& bidirectionalInfo = mImpl->mLogicalModel->mBidirectionalParagraphInfo;
+        Vector<BidirectionalLineInfoRun>& bidirectionalLineInfo = mImpl->mLogicalModel->mBidirectionalLineInfo;
+
+        // Check first if there are paragraphs with bidirectional info.
+        if( 0u != bidirectionalInfo.Count() )
+        {
+          // Get the lines
+          const Length numberOfLines = mImpl->mVisualModel->mLines.Count();
+
+          // Reorder the lines.
+          bidirectionalLineInfo.Reserve( numberOfLines ); // Reserve because is not known yet how many lines have right to left characters.
+          ReorderLines( bidirectionalInfo,
+                        startIndex,
+                        requestedNumberOfCharacters,
+                        mImpl->mVisualModel->mLines,
+                        bidirectionalLineInfo );
+
+          // Set the bidirectional info per line into the layout parameters.
+          layoutParameters.lineBidirectionalInfoRunsBuffer = bidirectionalLineInfo.Begin();
+          layoutParameters.numberOfBidirectionalInfoRuns = bidirectionalLineInfo.Count();
+
+          // Re-layout the text. Reorder those lines with right to left characters.
+          mImpl->mLayoutEngine.ReLayoutRightToLeftLines( layoutParameters,
+                                                         startIndex,
+                                                         requestedNumberOfCharacters,
+                                                         glyphPositions );
 
-      if( mImpl->mEventData->mSelectionEnabled )
+          if ( ( NO_OPERATION != ( UPDATE_DIRECTION & operations ) ) && ( numberOfLines > 0 ) )
+          {
+            const LineRun* const firstline = mImpl->mVisualModel->mLines.Begin();
+            if ( firstline )
+            {
+              mImpl->mAutoScrollDirectionRTL = firstline->direction;
+            }
+          }
+        }
+      } // REORDER
+
+      // Sets the layout size.
+      if( NO_OPERATION != ( UPDATE_LAYOUT_SIZE & operations ) )
       {
-        // Creates a SELECT event.
-        SelectEvent( currentCursorPosition.x, currentCursorPosition.y, false );
+        mImpl->mVisualModel->SetLayoutSize( layoutSize );
       }
-      break;
-    }
-    case Toolkit::TextSelectionPopup::SELECT_ALL:
+    } // view updated
+
+    // Store the size used to layout the text.
+    mImpl->mVisualModel->mControlSize = size;
+  }
+
+  if( NO_OPERATION != ( ALIGN & operations ) )
+  {
+    // The laid-out lines.
+    Vector<LineRun>& lines = mImpl->mVisualModel->mLines;
+
+    mImpl->mLayoutEngine.Align( size,
+                                startIndex,
+                                requestedNumberOfCharacters,
+                                lines );
+
+    viewUpdated = true;
+  }
+#if defined(DEBUG_ENABLED)
+  std::string currentText;
+  GetText( currentText );
+  DALI_LOG_INFO( gLogFilter, Debug::Concise, "Controller::DoRelayout [%p] mImpl->mAutoScrollDirectionRTL[%s] [%s]\n", this, (mImpl->mAutoScrollDirectionRTL)?"true":"false",  currentText.c_str() );
+#endif
+  DALI_LOG_INFO( gLogFilter, Debug::Verbose, "<--Controller::DoRelayout, view updated %s\n", ( viewUpdated ? "true" : "false" ) );
+  return viewUpdated;
+}
+
+void Controller::CalculateVerticalOffset( const Size& controlSize )
+{
+  Size layoutSize = mImpl->mVisualModel->GetLayoutSize();
+
+  if( fabsf( layoutSize.height ) < Math::MACHINE_EPSILON_1000 )
+  {
+    // Get the line height of the default font.
+    layoutSize.height = mImpl->GetDefaultFontLineHeight();
+  }
+
+  switch( mImpl->mLayoutEngine.GetVerticalAlignment() )
+  {
+    case LayoutEngine::VERTICAL_ALIGN_TOP:
     {
-      // Creates a SELECT_ALL event
-      SelectEvent( 0.f, 0.f, true );
+      mImpl->mScrollPosition.y = 0.f;
       break;
     }
-    case Toolkit::TextSelectionPopup::CLIPBOARD:
+    case LayoutEngine::VERTICAL_ALIGN_CENTER:
     {
-      mImpl->ShowClipboard();
+      mImpl->mScrollPosition.y = floorf( 0.5f * ( controlSize.height - layoutSize.height ) ); // try to avoid pixel alignment.
       break;
     }
-    case Toolkit::TextSelectionPopup::NONE:
+    case LayoutEngine::VERTICAL_ALIGN_BOTTOM:
     {
-      // Nothing to do.
+      mImpl->mScrollPosition.y = controlSize.height - layoutSize.height;
       break;
     }
   }
 }
 
-ImfManager::ImfCallbackData Controller::OnImfEvent( ImfManager& imfManager, const ImfManager::ImfEventData& imfEvent )
+// private : Events.
+
+void Controller::ProcessModifyEvents()
 {
-  bool update = false;
-  bool requestRelayout = false;
+  Vector<ModifyEvent>& events = mImpl->mModifyEvents;
 
-  std::string text;
-  unsigned int cursorPosition = 0u;
+  if( 0u == events.Count() )
+  {
+    // Nothing to do.
+    return;
+  }
 
-  switch( imfEvent.eventName )
+  for( Vector<ModifyEvent>::ConstIterator it = events.Begin(),
+         endIt = events.End();
+       it != endIt;
+       ++it )
   {
-    case ImfManager::COMMIT:
+    const ModifyEvent& event = *it;
+
+    if( ModifyEvent::TEXT_REPLACED == event.type )
     {
-      InsertText( imfEvent.predictiveString, Text::Controller::COMMIT );
-      update = true;
-      requestRelayout = true;
-      break;
+      // A (single) replace event should come first, otherwise we wasted time processing NOOP events
+      DALI_ASSERT_DEBUG( it == events.Begin() && "Unexpected TEXT_REPLACED event" );
+
+      TextReplacedEvent();
     }
-    case ImfManager::PREEDIT:
+    else if( ModifyEvent::TEXT_INSERTED == event.type )
     {
-      InsertText( imfEvent.predictiveString, Text::Controller::PRE_EDIT );
-      update = true;
-      requestRelayout = true;
-      break;
+      TextInsertedEvent();
     }
-    case ImfManager::DELETESURROUNDING:
+    else if( ModifyEvent::TEXT_DELETED == event.type )
     {
-      update = RemoveText( imfEvent.cursorOffset, imfEvent.numberOfChars );
-
-      if( update )
+      // Placeholder-text cannot be deleted
+      if( !mImpl->IsShowingPlaceholderText() )
       {
-        if( ( 0u != mImpl->mLogicalModel->mText.Count() ) ||
-            !mImpl->IsPlaceholderAvailable() )
-        {
-          mImpl->QueueModifyEvent( ModifyEvent::TEXT_DELETED );
-        }
-        else
-        {
-          ShowPlaceholderText();
-          mImpl->mEventData->mUpdateCursorPosition = true;
-        }
+        TextDeletedEvent();
       }
-      requestRelayout = true;
-      break;
-    }
-    case ImfManager::GETSURROUNDING:
-    {
-      GetText( text );
-      cursorPosition = GetLogicalCursorPosition();
-
-      imfManager.SetSurroundingText( text );
-      imfManager.SetCursorPosition( cursorPosition );
-      break;
-    }
-    case ImfManager::VOID:
-    {
-      // do nothing
-      break;
     }
-  } // end switch
+  }
 
-  if( ImfManager::GETSURROUNDING != imfEvent.eventName )
+  if( NULL != mImpl->mEventData )
   {
-    GetText( text );
-    cursorPosition = GetLogicalCursorPosition();
+    // When the text is being modified, delay cursor blinking
+    mImpl->mEventData->mDecorator->DelayCursorBlink();
   }
 
-  if( requestRelayout )
+  // Discard temporary text
+  events.Clear();
+}
+
+void Controller::TextReplacedEvent()
+{
+  // The natural size needs to be re-calculated.
+  mImpl->mRecalculateNaturalSize = true;
+
+  // Apply modifications to the model
+  mImpl->mOperationsPending = ALL_OPERATIONS;
+}
+
+void Controller::TextInsertedEvent()
+{
+  DALI_ASSERT_DEBUG( NULL != mImpl->mEventData && "Unexpected TextInsertedEvent" );
+
+  if( NULL == mImpl->mEventData )
   {
-    mImpl->mOperationsPending = ALL_OPERATIONS;
-    mImpl->RequestRelayout();
+    return;
+  }
 
-    // Do this last since it provides callbacks into application code
-    mImpl->mControlInterface.TextChanged();
+  // The natural size needs to be re-calculated.
+  mImpl->mRecalculateNaturalSize = true;
+
+  // Apply modifications to the model; TODO - Optimize this
+  mImpl->mOperationsPending = ALL_OPERATIONS;
+}
+
+void Controller::TextDeletedEvent()
+{
+  DALI_ASSERT_DEBUG( NULL != mImpl->mEventData && "Unexpected TextDeletedEvent" );
+
+  if( NULL == mImpl->mEventData )
+  {
+    return;
   }
 
-  ImfManager::ImfCallbackData callbackData( update, cursorPosition, text, false );
+  // The natural size needs to be re-calculated.
+  mImpl->mRecalculateNaturalSize = true;
 
-  return callbackData;
+  // Apply modifications to the model; TODO - Optimize this
+  mImpl->mOperationsPending = ALL_OPERATIONS;
 }
 
-Controller::~Controller()
+void Controller::SelectEvent( float x, float y, bool selectAll )
 {
-  delete mImpl;
+  DALI_LOG_INFO( gLogFilter, Debug::Verbose, "Controller::SelectEvent\n" );
+
+  if( NULL != mImpl->mEventData )
+  {
+    if( selectAll )
+    {
+      Event event( Event::SELECT_ALL );
+      mImpl->mEventData->mEventQueue.push_back( event );
+    }
+    else
+    {
+      Event event( Event::SELECT );
+      event.p2.mFloat = x;
+      event.p3.mFloat = y;
+      mImpl->mEventData->mEventQueue.push_back( event );
+    }
+
+    mImpl->RequestRelayout();
+  }
 }
 
 bool Controller::BackspaceKeyEvent()
@@ -2461,16 +2834,13 @@ bool Controller::BackspaceKeyEvent()
   else if( mImpl->mEventData->mPrimaryCursorPosition > 0 )
   {
     // Remove the character before the current cursor position
-    removed = RemoveText( -1, 1 );
+    removed = RemoveText( -1,
+                          1,
+                          UPDATE_INPUT_STYLE );
   }
 
   if( removed )
   {
-    DALI_LOG_INFO( gLogFilter, Debug::Verbose, "Controller::KeyEvent %p DALI_KEY_BACKSPACE RemovedText\n", this );
-    // Notifiy the IMF manager after text changed
-    // Automatic  Upper-case and restarting prediction on an existing word require this.
-    NotifyImfManager();
-
     if( ( 0u != mImpl->mLogicalModel->mText.Count() ) ||
         !mImpl->IsPlaceholderAvailable() )
     {
@@ -2479,28 +2849,36 @@ bool Controller::BackspaceKeyEvent()
     else
     {
       ShowPlaceholderText();
-      mImpl->mEventData->mUpdateCursorPosition = true;
     }
+    mImpl->mEventData->mUpdateCursorPosition = true;
+    mImpl->mEventData->mScrollAfterDelete = true;
   }
 
   return removed;
 }
 
-void Controller::NotifyImfManager()
+// private : Helpers.
+
+void Controller::ResetText()
 {
-  if( NULL != mImpl->mEventData )
-  {
-    if( mImpl->mEventData->mImfManager )
-    {
-      // Notifying IMF of a cursor change triggers a surrounding text request so updating it now.
-      std::string text;
-      GetText( text );
-      mImpl->mEventData->mImfManager.SetSurroundingText( text );
+  // Reset buffers.
+  mImpl->mLogicalModel->mText.Clear();
 
-      mImpl->mEventData->mImfManager.SetCursorPosition( GetLogicalCursorPosition() );
-      mImpl->mEventData->mImfManager.NotifyCursorPosition();
-    }
-  }
+  // We have cleared everything including the placeholder-text
+  mImpl->PlaceholderCleared();
+
+  mImpl->mTextUpdateInfo.mCharacterIndex = 0u;
+  mImpl->mTextUpdateInfo.mNumberOfCharactersToRemove = mImpl->mTextUpdateInfo.mPreviousNumberOfCharacters;
+  mImpl->mTextUpdateInfo.mNumberOfCharactersToAdd = 0u;
+
+  // Clear any previous text.
+  mImpl->mTextUpdateInfo.mClearAll = true;
+
+  // The natural size needs to be re-calculated.
+  mImpl->mRecalculateNaturalSize = true;
+
+  // Apply modifications to the model
+  mImpl->mOperationsPending = ALL_OPERATIONS;
 }
 
 void Controller::ShowPlaceholderText()
@@ -2579,15 +2957,24 @@ void Controller::ClearFontData()
   {
     mImpl->mFontDefaults->mFontId = 0u; // Remove old font ID
   }
-  mImpl->mLogicalModel->mFontRuns.Clear();
-  mImpl->mVisualModel->mGlyphs.Clear();
-  mImpl->mVisualModel->mGlyphsToCharacters.Clear();
-  mImpl->mVisualModel->mCharactersToGlyph.Clear();
-  mImpl->mVisualModel->mCharactersPerGlyph.Clear();
-  mImpl->mVisualModel->mGlyphsPerCharacter.Clear();
-  mImpl->mVisualModel->mGlyphPositions.Clear();
-  mImpl->mVisualModel->mLines.Clear();
-  mImpl->mVisualModel->ClearCaches();
+
+  // Set flags to update the model.
+  mImpl->mTextUpdateInfo.mCharacterIndex = 0u;
+  mImpl->mTextUpdateInfo.mNumberOfCharactersToRemove = mImpl->mTextUpdateInfo.mPreviousNumberOfCharacters;
+  mImpl->mTextUpdateInfo.mNumberOfCharactersToAdd = mImpl->mLogicalModel->mText.Count();
+
+  mImpl->mTextUpdateInfo.mClearAll = true;
+  mImpl->mTextUpdateInfo.mFullRelayoutNeeded = true;
+  mImpl->mRecalculateNaturalSize = true;
+
+  mImpl->mOperationsPending = static_cast<OperationsMask>( mImpl->mOperationsPending |
+                                                           VALIDATE_FONTS            |
+                                                           SHAPE_TEXT                |
+                                                           GET_GLYPH_METRICS         |
+                                                           LAYOUT                    |
+                                                           UPDATE_LAYOUT_SIZE        |
+                                                           REORDER                   |
+                                                           ALIGN );
 }
 
 void Controller::ClearStyleData()
@@ -2596,10 +2983,58 @@ void Controller::ClearStyleData()
   mImpl->mLogicalModel->ClearFontDescriptionRuns();
 }
 
-Controller::Controller( ControlInterface& controlInterface )
+void Controller::ResetCursorPosition( CharacterIndex cursorIndex )
+{
+  // Reset the cursor position
+  if( NULL != mImpl->mEventData )
+  {
+    mImpl->mEventData->mPrimaryCursorPosition = cursorIndex;
+
+    // Update the cursor if it's in editing mode.
+    if( EventData::IsEditingState( mImpl->mEventData->mState )  )
+    {
+      mImpl->mEventData->mUpdateCursorPosition = true;
+    }
+  }
+}
+
+void Controller::ResetScrollPosition()
+{
+  if( NULL != mImpl->mEventData )
+  {
+    // Reset the scroll position.
+    mImpl->mScrollPosition = Vector2::ZERO;
+    mImpl->mEventData->mScrollAfterUpdatePosition = true;
+  }
+}
+
+// private : Private contructors & copy operator.
+
+Controller::Controller()
 : mImpl( NULL )
 {
-  mImpl = new Controller::Impl( controlInterface );
+  mImpl = new Controller::Impl( NULL, NULL );
+}
+
+Controller::Controller( ControlInterface* controlInterface )
+{
+  mImpl = new Controller::Impl( controlInterface, NULL );
+}
+
+Controller::Controller( ControlInterface* controlInterface,
+                        EditableControlInterface* editableControlInterface )
+{
+  mImpl = new Controller::Impl( controlInterface,
+                                editableControlInterface );
+}
+
+// The copy constructor and operator are left unimplemented.
+
+// protected : Destructor.
+
+Controller::~Controller()
+{
+  delete mImpl;
 }
 
 } // namespace Text