diff -r e6a39382bb9c -r c8fb4cf7b3ae fep/aknfep/src/AknFepVietnameseToneManager.cpp
--- a/fep/aknfep/src/AknFepVietnameseToneManager.cpp	Tue Apr 27 16:59:43 2010 +0300
+++ b/fep/aknfep/src/AknFepVietnameseToneManager.cpp	Tue May 11 16:31:42 2010 +0300
@@ -85,3 +85,61 @@
     // First vowel row lists those tone marks themselves
     return VietToneMatrix[iVowelIndex+1][iToneIndex];
     }
+
+void CAknFepVietnameseToneManager::StartKeyLooping(TInt aKey)
+    {
+    iLoopingKey = aKey;
+    iIsKeyLooping = ETrue;
+    iIsLoopingCombined = EFalse;
+    }
+
+void CAknFepVietnameseToneManager::StopKeyLooping()
+    {
+    iLoopingKey = 0;
+    iIsKeyLooping = EFalse;
+    iIsLoopingCombined = EFalse;
+    }
+
+TInt CAknFepVietnameseToneManager::ToneMarkIndex() const
+    {
+    const TText prevChr = iFepMan->PreviousChar();
+
+    // All tone mark is after number in product key mapping.
+    // Notice: The order in product key mapping should be the same with in tone mark array. 
+    for (TUint i = 0; i < KNumberOfToneMarks; ++i)
+        {
+        TBuf<1> num;
+        num.Num( i + 2 );
+        if (prevChr == num [0])
+            {
+            return i;
+            }
+        }
+    
+    return KErrNotFound;
+    }
+
+TBool CAknFepVietnameseToneManager::GetLoopingToneMarkVowel( TText& aText ) const
+    {
+    const TText prev2prevChr = iFepMan->PreviousToPreviousChar( ETrue );
+
+    // Judge if the previous to previous Character is a vowel or not
+    TInt vowelIndex = KErrNotFound;
+    for (TUint i = 0; i < sizeof(VietVowelList) / sizeof(TText); ++i)
+        {
+        if ( prev2prevChr == VietVowelList[i] )
+            {
+            vowelIndex = i;
+            break;
+            }
+        }
+    
+    if (vowelIndex >= 0)
+        {
+        aText =  VietToneMatrix[vowelIndex+1][ ToneMarkIndex() ];
+        return ETrue;
+        }
+    
+    return EFalse;
+    }
+