--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/uifw/eikctl/src/aknuniteditor.cpp	Tue Feb 02 01:00:49 2010 +0200
@@ -0,0 +1,301 @@
+/*
+* Copyright (c) 2006-2007 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  Unit MFNE
+*
+*/
+
+
+#include <barsread.h>
+#include <eikmfne.pan>
+#include <e32math.h>
+#include <eikon.hrh>
+#include <eikctl.rsg>
+#include <StringLoader.h>
+#include <AknUtils.h>
+
+#include <AknTasHook.h>
+#include "aknmfnefloat.h"
+#include "aknmfneseparator.h"
+#include "aknuniteditor.h"
+
+const TInt KAknNumberOfFields( 3 );
+const TInt KAknMaxAllowedFractionalDigits( 8 );
+const TInt KAknResourceTable[] =
+        {
+        0,
+        R_AVKON_UNIT_EDITOR_METER,
+        R_AVKON_UNIT_EDITOR_KILOMETER,
+        R_AVKON_UNIT_EDITOR_FOOT,
+        R_AVKON_UNIT_EDITOR_MILE,
+        R_AVKON_UNIT_EDITOR_METR_SPEED,
+        R_AVKON_UNIT_EDITOR_IMPER_SPEED
+        };
+
+// ---------------------------------------------------------------------------
+// A utility function to copy from source to destination with a length
+// check. If source is larger than destination, the function returns the
+// length of the source. This value can then be passed to client (where
+// source length is not necessarily known) for allocating a buffer.
+// ---------------------------------------------------------------------------
+static TInt CopyDescOrNull( TDes& aDestination, const TDesC& aSource )
+    {
+    TInt sourceLength( aSource.Length() );
+    
+    if ( aDestination.MaxLength() >= sourceLength )
+        {
+        aDestination.Copy( aSource );
+        sourceLength = 0;
+        }
+    
+    return sourceLength;
+    }
+
+// ======== MEMBER FUNCTIONS ========
+
+CAknUnitEditor::CAknUnitEditor() : iUnitLimit( sizeof( KAknResourceTable ) / sizeof( TInt ) )
+    {
+    }
+    
+
+EXPORT_C CAknUnitEditor* CAknUnitEditor::NewL()
+    {
+    CAknUnitEditor* self = CAknUnitEditor::NewLC();
+    CleanupStack::Pop( self );
+    return self;
+    }
+
+
+EXPORT_C CAknUnitEditor* CAknUnitEditor::NewLC()
+    {
+    CAknUnitEditor* self = new( ELeave ) CAknUnitEditor;
+    CleanupStack::PushL( self );
+    AKNTASHOOK_ADDL( self, "CAknUnitEditor" );
+    return self;
+    }
+    
+    
+EXPORT_C CAknUnitEditor::~CAknUnitEditor()
+    {
+    AKNTASHOOK_REMOVE();
+    }
+
+
+EXPORT_C void CAknUnitEditor::ConstructL(
+        TReal aMinimumValue, TReal aMaximumValue,
+        TReal aInitialValue, 
+        TInt aMaxFractionalDigits, TInt aUnit, TUint aFlags )
+    {
+    // No other construction so this function could be called again
+    if ( !SupportsUnit( aUnit ) )
+        {
+        User::Leave( KErrNotSupported );
+        }
+    
+    CreateFieldArrayL( KAknNumberOfFields );
+
+    iFloatField = CAknMfneFloat::NewL( aMaxFractionalDigits );
+    
+    iFloatField->SetLimits( aMinimumValue, aMaximumValue );
+    
+    _LIT( KSpace, " " );
+    iSeparatorField = CAknMfneSeparator::NewL( KSpace );
+    
+    iUnitField = CAknMfneSeparator::NewL( KNullDesC );
+    
+    // This is for the lifetime of the editor.    
+    if ( AknLayoutUtils::LayoutMirrored() )
+        {
+        AddField( iUnitField );      // ownership transferred
+        AddField( iSeparatorField ); // ownership transferred
+        AddField( iFloatField );     // ownership transferred
+        }
+    else
+        {   
+        AddField( iFloatField );     // ownership transferred
+        AddField( iSeparatorField ); // ownership transferred
+        AddField( iUnitField );      // ownership transferred
+        }
+        
+    SetValue( aInitialValue );
+    SetUnitL( aUnit );
+
+    SetFlags( aFlags );
+    }
+
+
+EXPORT_C void CAknUnitEditor::ConstructFromResourceL( TResourceReader& aResourceReader )
+    {
+    TReal minimumValue       = aResourceReader.ReadReal64();
+    TReal maximumValue       = aResourceReader.ReadReal64();
+    TReal initialValue       = aResourceReader.ReadReal64();
+    TInt maxFractionalDigits = aResourceReader.ReadInt8();
+    TInt unit                = aResourceReader.ReadInt32();
+    TUint flags              = aResourceReader.ReadInt32();
+        
+    ConstructL( minimumValue, maximumValue, initialValue, maxFractionalDigits, unit, flags );
+    }
+
+
+EXPORT_C TBool CAknUnitEditor::SetValue( TReal aValue )
+    {
+    TBool ret = iFloatField->SetValue( aValue );
+    iUnitField->MakeVisible( UnitFieldVisibility() );
+    DrawDeferred();
+    if ( !IsFocused() )
+        {
+        TRAP_IGNORE( ReportEventL( MCoeControlObserver::EEventStateChanged ) );
+        }
+    return ret;
+    }
+    
+    
+EXPORT_C TReal CAknUnitEditor::Value() const
+    {
+    return iFloatField->Value();
+    }
+    
+EXPORT_C TBool CAknUnitEditor::SupportsUnit( TInt aUnit ) const
+    {
+    return ( aUnit >= 0 && aUnit < iUnitLimit );
+    }
+
+EXPORT_C void CAknUnitEditor::SetUnitL( const TDesC& aUnit )
+    {
+    iUnitField->SetTextL( aUnit );
+    iUnitType = EAknUnitEditorCustomUnit;
+    DrawDeferred();
+    }
+    
+
+EXPORT_C void CAknUnitEditor::SetUnitL( TInt aUnit )
+    {
+    TInt resourceId( EAknUnitEditorCustomUnit );
+        
+    if ( !SupportsUnit( aUnit ) )
+        {
+        User::Leave( KErrNotSupported );
+        }
+        
+    resourceId = KAknResourceTable[aUnit];
+    
+    if ( resourceId )
+        {
+        HBufC* unitString = StringLoader::LoadL( resourceId );
+        CleanupStack::PushL( unitString );
+        iUnitField->SetTextL( *unitString );
+        CleanupStack::PopAndDestroy( unitString ); 
+        }
+    else
+        {
+        iUnitField->SetTextL( KNullDesC );
+        }
+
+    // Either a leave has occurred or this is a safe match
+    iUnitType = aUnit;
+    
+    DrawDeferred();
+    }
+    
+
+EXPORT_C TInt CAknUnitEditor::GetUnit( TDes& aDes ) const
+    {
+    return CopyDescOrNull( aDes, iUnitField->Text() );
+    }
+    
+    
+EXPORT_C TInt CAknUnitEditor::Unit() const
+    {
+    return iUnitType;
+    }
+
+
+EXPORT_C void CAknUnitEditor::SetMaxFractionalDigits(
+    TInt aMaxFractionalDigits )
+    {
+    TBool validValue = ( aMaxFractionalDigits >= 0 &&
+         aMaxFractionalDigits <= KAknMaxAllowedFractionalDigits );
+    
+    if ( validValue )
+        {
+        iFloatField->SetMaxFractionalDigits( aMaxFractionalDigits );
+        DrawDeferred();
+        }
+    }
+    
+
+EXPORT_C TInt CAknUnitEditor::MaxFractionalDigits() const
+    {
+    return iFloatField->MaxFractionalDigits();
+    }
+    
+
+EXPORT_C void CAknUnitEditor::SetMinimumAndMaximum( TReal aMinimumValue, TReal aMaximumValue )
+    {
+    iFloatField->SetLimits( aMinimumValue, aMaximumValue );
+    DrawDeferred();
+    }
+    
+
+EXPORT_C void CAknUnitEditor::GetMinimumAndMaximum( TReal& aMinimumValue, TReal& aMaximumValue ) const
+    {
+    iFloatField->GetLimits( aMinimumValue, aMaximumValue );
+    }
+   
+
+EXPORT_C void CAknUnitEditor::SetFlags( TUint aFlags )
+    {
+    iFlags = aFlags;
+    
+    if ( iFlags & EAknUnitEditorAllowUninitialized )
+        {
+        iFloatField->SetFlags( CAknMfneFloat::EAllowNaN );
+        }
+
+    DrawDeferred();
+    }
+
+
+EXPORT_C TUint CAknUnitEditor::Flags() const
+    {
+    return iFlags;
+    }
+    
+
+EXPORT_C void CAknUnitEditor::PrepareForFocusLossL()
+    {
+    CEikMfne::PrepareForFocusLossL();
+    }
+
+
+void CAknUnitEditor::FocusChanged( TDrawNow aDrawNow )
+    {
+    // Due to a quirk in dialog page captioned control creation
+    // this function could get called even if the editor is
+    // not fully constructed.
+    if ( iUnitField )
+        {
+        iUnitField->MakeVisible( UnitFieldVisibility() );    
+        }
+        
+    CEikMfne::FocusChanged( aDrawNow );
+    }
+
+
+TBool CAknUnitEditor::UnitFieldVisibility() const
+    {
+    return ( !Math::IsNaN( Value() ) || IsFocused() );
+    }
+
+
+// End of file