/*

* Copyright (c) 2007-2009 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:  Implementation for CAknSingleColumnStyleSubtitleRow class.

*

*/

#include <AknUtils.h>

#include <aknlayoutscalable_avkon.cdl.h>

#include "akntree.h"

#include "aknsinglecolumnstylesubtitlerow.h"

#include "akntreelistinternalconstants.h"

using AknTreeListIconID::KDefault;

using AknTreeListIconID::KNone;

// ======== MEMBER FUNCTIONS ========

// ---------------------------------------------------------------------------

// Two-phased constructor.

// ---------------------------------------------------------------------------

//

CAknSingleColumnStyleSubtitleRow* CAknSingleColumnStyleSubtitleRow::NewLC(

    const TDesC& aText, TUint32 aFlags )

    {

    CAknSingleColumnStyleSubtitleRow* self = 

        new ( ELeave ) CAknSingleColumnStyleSubtitleRow( aFlags );

    CleanupStack::PushL( self );

    self->ConstructL( aText );

    return self;

    }

// ---------------------------------------------------------------------------

// Destructor.

// ---------------------------------------------------------------------------

//

CAknSingleColumnStyleSubtitleRow::~CAknSingleColumnStyleSubtitleRow()

    {

    delete iText;

    }

// ---------------------------------------------------------------------------

// Returns the text set for the subtitle row.

// ---------------------------------------------------------------------------

//

const TDesC& CAknSingleColumnStyleSubtitleRow::Text() const

    {

    return iText ? *iText : KNullDesC();

    }

// ---------------------------------------------------------------------------

// Allocates new heap based descriptor for the text, and if the allocation

// succeeds, deletes the old descriptor and replaces it with the new.

// ---------------------------------------------------------------------------

//

void CAknSingleColumnStyleSubtitleRow::SetTextL( const TDesC& aText,

    TBool aDrawNow  )

    {

    HBufC* tmp = aText.AllocL();

    delete iText;

    iText = tmp;

    if ( aDrawNow )

        {

        __ASSERT_DEBUG( Root(), User::Invariant() );

        Root()->ItemModified( this );

        }

    }

// ---------------------------------------------------------------------------

// Returns the icon ID set for the specified subtitle row icon type.

// ---------------------------------------------------------------------------

//

TInt CAknSingleColumnStyleSubtitleRow::Icon( TIconType aType ) const

    {

    TInt iconId = KDefault;

    switch ( aType )

        {

        case EExpandedIcon:

            iconId = iExpandedIcon;

            break;

        case ECollapsedIcon:

            iconId = iCollapsedIcon;

            break;

        case EOptIcon:

            iconId = iOptIcon;

            break;

        case EHighlightedExpandedIcon:

            iconId = iHighlightedExpandedIcon;

            break;

        case EHighlightedCollapsedIcon:

            iconId = iHighlightedCollapsedIcon;

            break;

        case EHighlightedOptIcon:

            iconId = iHighlightedOptIcon;

            break;

        default:

            break;

        }

    return iconId;

    }

// ---------------------------------------------------------------------------

//  Sets the icon ID for specified subtitle row icon type.

// ---------------------------------------------------------------------------

//

void CAknSingleColumnStyleSubtitleRow::SetIcon( TIconType aType,

    TInt aIconId, TBool aDrawNow )

    {

    switch( aType )

        {

        case EExpandedIcon:

            iExpandedIcon = aIconId;

            break;

        case ECollapsedIcon:

            iCollapsedIcon = aIconId;

            break;

        case EOptIcon:

            iOptIcon = aIconId;

            break;

        case EHighlightedExpandedIcon:

            iHighlightedExpandedIcon = aIconId;

            break;

        case EHighlightedCollapsedIcon:

            iHighlightedCollapsedIcon = aIconId;

            break;

        case EHighlightedOptIcon:

            iHighlightedOptIcon = aIconId;

            break;

        default:

            __ASSERT_DEBUG( EFalse, User::Invariant() );

            break;

        }

    if ( aDrawNow )

        {

        __ASSERT_DEBUG( Root(), User::Invariant() );

        Root()->ItemModified( this );

        }

    }

// ---------------------------------------------------------------------------

// Icon ID.

// ---------------------------------------------------------------------------

//

TInt CAknSingleColumnStyleSubtitleRow::IconId( TBool aFocused ) const

    {

    TInt iconId = KNone;

    if ( IsExpanded() )

        {

        iconId = CAknTree::EOpenFolderIndication;

        if ( aFocused && iHighlightedExpandedIcon != KDefault )

            {

            iconId = iHighlightedExpandedIcon;

            }

        else if ( iExpandedIcon != KDefault )

            {

            iconId = iExpandedIcon;

            }

        }

    else

        {

        iconId = CAknTree::EClosedFolderIndication;

        if ( aFocused && iHighlightedCollapsedIcon != KDefault )

            {

            iconId = iHighlightedCollapsedIcon;

            }

        else if ( iCollapsedIcon != KDefault )

            {

            iconId = iCollapsedIcon;

            }

        }

    return iconId;

    }

// ---------------------------------------------------------------------------

// Optional icon ID.

// ---------------------------------------------------------------------------

//

TInt CAknSingleColumnStyleSubtitleRow::OptionalIconId( TBool aFocused ) const

    {

    // Default ID for optional icon.

    TInt iconId = KNone;

    // Determines ID for the optional icon based on focusing, item marking,

    // and set optional icon IDs.

    if ( IsMarked() )

        {

        iconId = aFocused ? AknTreeListIconID::KHighlightedMarkedIndication :

            AknTreeListIconID::KMarkedIndication;

        }

    else if ( aFocused && iHighlightedOptIcon != KDefault )

        {

        iconId = iHighlightedOptIcon;

        }

    else if ( iOptIcon != KDefault )

        {

        iconId = iOptIcon;

        }

    return iconId;

    }

// ---------------------------------------------------------------------------

// From class CAknTreeItem.

// Returns the type of concrete item class.

// ---------------------------------------------------------------------------

//

TInt CAknSingleColumnStyleSubtitleRow::Type() const

    {

    return AknTreeList::KSingleColumnStyleSubtitleRow;

    }

// ---------------------------------------------------------------------------

// From class CAknTreeItem.

// Draws the subtitle row to the appointed graphics context.

// ---------------------------------------------------------------------------

//

void CAknSingleColumnStyleSubtitleRow::Draw( CWindowGc& aGc,

    const TRect& aItemRect, const TRect& /*aRect*/, TBool aFocused ) const

    {

    CAknTree* root = Root();

    __ASSERT_DEBUG( root, User::Invariant() );

    // Icon.

    TInt iconVariety =  IsMarked() ? 3 : 2;

    TRect iconRect = RectFromLayout( aItemRect, AknLayoutScalable_Avkon::

        list_single_2heading_msg_pane_g1( iconVariety ) );

    TInt iconId = IconId( aFocused );

    if ( iconId != AknTreeListIconID::KNone )

        {

        root->DrawIcon( iconId, iconRect.Size(), aGc, iconRect.iTl,

            iconRect.Size() );

        }    

    // Non-empty folder indication icon.

    if ( !IsEmpty() )

        {

        TInt indicatorId = IsExpanded() ?

            CAknTree::ECollapseFunctionIndication :

            CAknTree::EExpandFunctionIndication;

        root->DrawIcon( indicatorId, iconRect.Size(), aGc, iconRect.iTl,

            iconRect.Size() );        

        }

    // Optional icon ID.

    TInt optIconId = OptionalIconId( aFocused );

    // Text.

    TAknLayoutText layoutText;

    TInt textVariety = ( optIconId == KNone ) ? 2 : 3;

    layoutText.LayoutText( aItemRect, AknLayoutScalable_Avkon::

        list_single_2heading_msg_pane_t1( textVariety ).LayoutLine() );

    // Optional indication icon.

    TInt optIconVariety = 1; // Sorting group. Marked.

    TRect optIconRect = RectFromLayout( aItemRect, AknLayoutScalable_Avkon::

        list_single_2heading_msg_pane_g2( optIconVariety ) );

    if ( optIconId != KNone )

        {

        root->DrawIcon( optIconId, optIconRect.Size(), aGc,

            optIconRect.iTl, optIconRect.Size() );

        }    

    }

// ---------------------------------------------------------------------------

// From class CAknTreeItem.

// Handles pointer events.

// ---------------------------------------------------------------------------

//

void CAknSingleColumnStyleSubtitleRow::HandlePointerEventL(

    const TPointerEvent& /*aPointerEvent*/, const TRect& /*aItemRect*/ )

    {

    }

// ---------------------------------------------------------------------------

// C++ constructor.

// ---------------------------------------------------------------------------

//

CAknSingleColumnStyleSubtitleRow::CAknSingleColumnStyleSubtitleRow(

    TUint32 aFlags )

    : CAknTreeNode( aFlags ),

    iExpandedIcon( KDefault ),

    iCollapsedIcon( KDefault ),

    iOptIcon( KDefault ),

    iHighlightedExpandedIcon( KDefault ),

    iHighlightedCollapsedIcon( KDefault ),

    iHighlightedOptIcon( KDefault )

    {

    }

// ---------------------------------------------------------------------------

// Second phase constructor.

// ---------------------------------------------------------------------------

//

void CAknSingleColumnStyleSubtitleRow::ConstructL( const TDesC& aText )

    {

    iText = aText.AllocL();

    }