/*

* Copyright (c) 2006-2009 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 CAknSingleStyleTreeLeaf class.

*

*/

#include <AknUtils.h>

#include <aknlayoutscalable_avkon.cdl.h>

#include "aknsinglestyletreeleaf.h"

#include "akntree.h"

#include "akntreelistinternalconstants.h"

using AknTreeListIconID::KDefault;

using AknTreeListIconID::KNone;

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

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

// Two-phased constructor.

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

//

CAknSingleStyleTreeLeaf* CAknSingleStyleTreeLeaf::NewL( const TDesC& aText,

    TUint32 aFlags )

    {

    CAknSingleStyleTreeLeaf* self = CAknSingleStyleTreeLeaf::NewLC( aText,

        aFlags );

    CleanupStack::Pop( self );

    return self;

    }

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

// Two-phased constructor.

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

//

CAknSingleStyleTreeLeaf* CAknSingleStyleTreeLeaf::NewLC( const TDesC& aText,

    TUint32 aFlags )

    {

    CAknSingleStyleTreeLeaf* self = 

        new ( ELeave ) CAknSingleStyleTreeLeaf( aFlags );

    CleanupStack::PushL( self );

    self->ConstructL( aText );

    return self;

    }

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

// Destructor.

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

//

CAknSingleStyleTreeLeaf::~CAknSingleStyleTreeLeaf()

    {

    delete iText;

    }

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

// Returns the text set for the leaf.

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

//

const TDesC& CAknSingleStyleTreeLeaf::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 CAknSingleStyleTreeLeaf::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 tree leaf icon type.

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

//

TInt CAknSingleStyleTreeLeaf::Icon( TIconType aType ) const

    {

    TInt iconId = KDefault;

    switch ( aType )

        {

        case EIcon:

            iconId = iIcon;

            break;

        case EOptIcon1:

            iconId = iOptIcon1;

            break;

        case EOptIcon2:

            iconId = iOptIcon2;

            break;

        case EHighlightedIcon:

            iconId = iHighlightedIcon;

            break;

        case EHighlightedOptIcon1:

            iconId = iHighlightedOptIcon1;

            break;

        case EHighlightedOptIcon2:

            iconId = iHighlightedOptIcon2;

            break;

        default:

            break;

        }

    return iconId;

    }

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

//  Sets the icon ID for specified tree leaf icon type.

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

//

void CAknSingleStyleTreeLeaf::SetIcon( TIconType aType, TInt aIconId,

    TBool aDrawNow )

    {

    switch( aType )

        {

        case EIcon:

            iIcon = aIconId;

            break;

        case EOptIcon1:

            iOptIcon1 = aIconId;

            break;

        case EOptIcon2:

            iOptIcon2 = aIconId;

            break;

        case EHighlightedIcon:

            iHighlightedIcon = aIconId;

            break;

        case EHighlightedOptIcon1:

            iHighlightedOptIcon1 = aIconId;

            break;

        case EHighlightedOptIcon2:

            iHighlightedOptIcon2 = aIconId;

            break;

        default:

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

            break;

        }

    if ( aDrawNow )

        {

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

        Root()->ItemModified( this );

        }

    }

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

// Icon ID.

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

//

TInt CAknSingleStyleTreeLeaf::IconId( TBool aFocused ) const

    {

    // Default ID for icon.

    TInt iconId = CAknTree::EDefaultFileIndication;

    // Determine ID for the icon based on focusing and set IDs.

    if ( aFocused && iHighlightedIcon != KDefault )

        {

        iconId = iHighlightedIcon;

        }

    else if ( iIcon != KDefault )

        {

        iconId = iIcon;

        }

    return iconId;

    }

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

// Optional icon ID.

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

//

TInt CAknSingleStyleTreeLeaf::OptionalIconId( TInt aIndex,

    TBool aFocused ) const

    {

    __ASSERT_DEBUG( aIndex == 0 || aIndex == 1, User::Invariant() );

    // Default ID for optional icon.

    TInt optIconId = AknTreeListIconID::KNone; 

    // Determine ID for specified optional icon.

    if ( aIndex == 0 )

        {

        if ( aFocused && iHighlightedOptIcon1 != KDefault )

            {

            optIconId = iHighlightedOptIcon1;

            }

        else if ( iOptIcon1 != KDefault )

            {

            optIconId = iOptIcon1;

            }

        }

    else if ( aIndex == 1 )

        {

        if ( aFocused && iHighlightedOptIcon2 != KDefault )

            {

            optIconId = iHighlightedOptIcon2;

            }

        else if ( iOptIcon2 != KDefault )

            {

            optIconId = iOptIcon2;

            }

        }

    return optIconId;

    }

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

// Text variety depending on optional icons.

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

//

TInt CAknSingleStyleTreeLeaf::TextVariety( TInt aOptIconId1,

    TInt aOptIconId2 ) const

    {

    TInt textVariety = 0;

    if ( aOptIconId1 != AknTreeListIconID::KNone )

        {

        textVariety = 1;

        }

    if ( aOptIconId2 != AknTreeListIconID::KNone )

        {

        textVariety = 2;

        }

    return textVariety;

    }

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

// From class CAknTreeItem.

// Returns the type of concrete item class.

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

//

TInt CAknSingleStyleTreeLeaf::Type() const

    {

    return AknTreeList::KSingleStyleTreeLeaf;

    }

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

// From class CAknTreeItem.

// Draws the tree leaf to appointed graphics context.

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

//

void CAknSingleStyleTreeLeaf::Draw( CWindowGc& aGc, const TRect& aItemRect,

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

    {

    CAknTree* root = Root();

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

    // Icon.

    TInt iconVariety = 0; // Arbitrarily selected variety.

    TRect iconRect = RectFromLayout( aItemRect, AknLayoutScalable_Avkon::

        list_single_graphic_hl_pane_g2( iconVariety ) );

    TInt iconId = IconId( aFocused );

    // Dragging/flicking

    if ( iIcon != AknTreeListIconID::KNone )

        {

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

            iconRect.Size() );

        }

    // Optional icon IDs.

    TInt optIconId1 = OptionalIconId( 0, aFocused );

    TInt optIconId2 = OptionalIconId( 1, aFocused );

    // Text variety is set according to required optional icons.

    TInt textVariety = TextVariety( optIconId1, optIconId2 );

    // Text.

    TAknLayoutText layoutText;

    layoutText.LayoutText( aItemRect, AknLayoutScalable_Avkon::

        list_single_graphic_hl_pane_t1( textVariety ).LayoutLine() );

    root->DrawText( aGc, aItemRect, AknLayoutScalable_Avkon::

        list_single_graphic_hl_pane_t1( textVariety ), *iText, NULL, this,

        aFocused, ETrue );

    // Optional item state indication icon.

    TInt optIconVariety1 = 1;

    TRect optIconRect1 = RectFromLayout( aItemRect, AknLayoutScalable_Avkon::

        list_single_graphic_hl_pane_g4( optIconVariety1 ) );

    if ( optIconId1 != KNone )

        {

        root->DrawIcon( optIconId1, optIconRect1.Size(), aGc,

            optIconRect1.iTl, optIconRect1.Size() );

        }

    // Another optional item state indication icon.

    TInt optIconVariety2 = 1;

    TRect optIconRect2 = RectFromLayout( aItemRect, AknLayoutScalable_Avkon::

        list_single_graphic_hl_pane_g5( optIconVariety2 ) );

    if ( optIconId2 != KNone )

        {

        root->DrawIcon( optIconId2, optIconRect2.Size(), aGc,

            optIconRect2.iTl, optIconRect2.Size() );

        }    

    }   

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

// From class CAknTreeItem.

// Handles pointer events.

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

//

void CAknSingleStyleTreeLeaf::HandlePointerEventL(

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

    {

    }

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

// C++ constructor.

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

//

CAknSingleStyleTreeLeaf::CAknSingleStyleTreeLeaf( TUint32 aFlags )

    : CAknTreeLeaf( aFlags ),

    iIcon( KDefault ),

    iOptIcon1( KDefault ),

    iOptIcon2( KDefault ),

    iHighlightedIcon( KDefault ),

    iHighlightedOptIcon1( KDefault ),

    iHighlightedOptIcon2( KDefault )

    {

    }

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

// Second phase constructor.

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

//

void CAknSingleStyleTreeLeaf::ConstructL( const TDesC& aText )

    {

    iText = aText.AllocL();

    }