/*

* Copyright (c) 2005-2008 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:  Container for GSParentPlugin.

*

*/

// INCLUDE FILES

#include    <gsparentcontainer.h>

#include    <gsparentplugin.h>

#include    <gsplugininterface.h>

#include    "GsLogger.h"

#include    <GSParentPluginRsc.rsg>

#include    <gsfwviewuids.h>

#include    "GSBaseDocument.h"

#include    <mgswatchdog.h>

#include    <AknIconArray.h>  //for loading icons

#include    <aknlists.h>

#include    <AknsUtils.h>     //for loading icons

#include    <akntitle.h>

#include    <akntitle.h>

#include    <aknViewAppUi.h>

#include    <barsread.h> // For TResourceReader

#include    <bldvariant.hrh>

#include    <calslbs.h>

#include    <eikclbd.h>

//CONSTANTS

const TInt KGSPluginArrayInitSize = 10;

const TInt KGSCaptionBufSize = 256;

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

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

// CGSParentContainer::ConstructL(const TRect& aRect)

// Symbian OS two phased constructor

//

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

//

void CGSParentContainer::ConstructL(

    const TRect& aRect,

    CAknViewAppUi* aAppUi,

    CArrayPtrFlat<CGSPluginInterface>* aPluginArray,

    TInt aTitleRscId,

    CGSParentPlugin* aParentPlugin,

    TGSListboxTypes aListBoxType )

    {

    iAppUi = aAppUi;

    iPluginArray = aPluginArray;

    iListBoxType = aListBoxType;

    iParentPlugin = aParentPlugin;

    CGSBaseDocument* doc = static_cast< CGSBaseDocument* >( iAppUi->Document() );

    iGSWatchDog = doc->WatchDog();

    // Initialize the array containing pointers to plugins that are actually

    // displayed in lbx.

    iVisiblePlugins = new (ELeave) CArrayPtrFlat<CGSPluginInterface>( KGSPluginArrayInitSize );

    __GSLOGSTRING( "[CGSParentContainer] ConstructL" );

    // Set view title from resource:

    CEikStatusPane* sp = iAppUi->StatusPane();

    CAknTitlePane* title = static_cast<CAknTitlePane*>

        ( sp->ControlL( TUid::Uid( EEikStatusPaneUidTitle ) ) );

    TResourceReader rReader;

    iCoeEnv->CreateResourceReaderLC( rReader, aTitleRscId );

    title->SetFromResourceL( rReader );

    CleanupStack::PopAndDestroy(); // rReader

    CreateWindowL(); //makes this control a window-owning control

    CreateListBoxL( iListBoxType );

    SetRect( aRect );

    ActivateL();

    }

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

// CGSParentContainer::~CGSParentContainer()

// Destructor

//

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

//

CGSParentContainer::~CGSParentContainer()

    {

    __GSLOGSTRING( "[CGSParentContainer] ~CGSParentContainer()|->" );

    if  ( iVisiblePlugins )

        {

        iVisiblePlugins->Reset();

        }

    delete iVisiblePlugins;

    if ( iListBox )

        {

        delete iListBox;

        }

    __GSLOGSTRING( "[CGSParentContainer] ~CGSParentContainer()-|" );

  }

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

// CGSParentContainer::UpdateListboxL

//

// Updates listbox from iPluginArray. Uses switch statement to handle different

// listbox types from TGSListboxTypes because the list item format

// and icon numbers depend on the listbox type.

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

//

void CGSParentContainer::UpdateListBoxL()

    {

    __GSLOGSTRING( "[CGSParentContainer::UpdateListBoxL]" );

    iItemTextArray->Reset();

    // Empty the array because it will be updated.

    iVisiblePlugins->Reset();

    // Array for icons in the listbox. Array owns the icons.

    CAknIconArray* icons = NULL;

    // Create icon array if required by the listbox type:

    switch( iListBoxType )

        {

        case EGSListBoxTypeSingleLarge:

        case EGSListBoxTypeDouble2Large:

        case EGSListBoxTypeDoubleLarge:

            icons = new (ELeave) CAknIconArray( KGSPluginArrayInitSize );

            CleanupStack::PushL( icons );

            break;

        default:

            break;

        }

    // Counter for created icons. This is used to maintain corrext indexing for

    // each plugin's icons in case a plugin has multiple icons and icon indexes

    // can not be mapped directly to plugin index.

    TInt iconCounter = 0;

    // 1) Add each plugin's data to listbox if the plugin is visible.

    for( TInt i = 0; i < iPluginArray->Count(); i++ )

        {

        CGSPluginInterface* plugin = iPluginArray->operator[]( i );

        // Adding plugin data to lbx has a lot of CGSPluginInterface API calls.

        // -> A good place to use quarantine to catch panicking plugins in

        // any of these calls.

        iGSWatchDog->QuarantineL( plugin->Id() );

        if( plugin->Visible() )

            {

            AddPluginDataToLbxL( plugin,

                                 iItemTextArray,

                                 icons,

                                 iconCounter );

            }

        iGSWatchDog->RemoveFromQuarantineL( plugin->Id() );

        }

    // 2) Replace old icon array if needed.

    switch( iListBoxType )

        {

        case EGSListBoxTypeSingleLarge:

            {

            // Temporary variable needed to use casted lbx.

            CAknSingleLargeStyleListBox* lbx =

                STATIC_CAST( CAknSingleLargeStyleListBox*, iListBox );

            // Destroy the old icons because SetIconArray() does not destroy them.

            CArrayPtr<CGulIcon>* oldIcons

                = lbx->ItemDrawer()->ColumnData()->IconArray();

            if( oldIcons )

                {

                __GSLOGSTRING( "[CGSParentContainer] Destroying old icons." );

                oldIcons->ResetAndDestroy();

                delete oldIcons;

                }

            // Transfer ownership of icon array to the lbx.

            // SetIconArray() does not delete the old icon array

            lbx->ItemDrawer()->ColumnData()->SetIconArray( icons );

            CleanupStack::Pop( icons );

            }

            break;

        case EGSListBoxTypeDouble2Large:

        case EGSListBoxTypeDoubleLarge:

            {

            // Temporary variable needed to use casted lbx.

            CEikFormattedCellListBox* lbx =

                STATIC_CAST( CEikFormattedCellListBox*, iListBox );

            // Destroy the old icons because SetIconArray() does not destroy them.

            CArrayPtr<CGulIcon>* oldIcons

                = lbx->ItemDrawer()->ColumnData()->IconArray();

            if( oldIcons )

                {

                __GSLOGSTRING( "[CGSParentContainer] Destroying old icons." );

                oldIcons->ResetAndDestroy();

                delete oldIcons;

                }

            // Transfer ownership of icon array to the lbx.

            // SetIconArray() does not delete the old icon array

            lbx->ItemDrawer()->ColumnData()->SetIconArray( icons );

            CleanupStack::Pop( icons );

            }

            break;

        case EGSListBoxTypeSettings:

            break;

        default:

            break;

        }

#ifdef _GS_PARENTPLUGIN_LBX_FORMAT_TRACES

#pragma message("_GS_PARENTPLUGIN_LBX_FORMAT_TRACES activated")

        __GSLOGSTRING( "[CGSParentContainer::UpdateListBoxL] iItemTextArray:" );

        for( TInt i = 0; i < iItemTextArray->Count(); i++ )

            {

            __GSLOGSTRING1( "%S", &iItemTextArray->operator[]( i ) );

            }

#endif // _GS_PARENTPLUGIN_LBX_FORMAT_TRACES

    // 3) Draw listbox again

    iListBox->HandleItemAdditionL();

    __GSLOGSTRING( "[CGSParentContainer] UpdateListBoxL()-|" );

    }

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

// CGSParentContainer::AddPluginDataToLbxL()

//

//

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

//

void CGSParentContainer::AddPluginDataToLbxL( CGSPluginInterface* aPlugin,

                                              CDesCArray* aItemTextArray,

                                              CAknIconArray* aIconArray,

                                              TInt& aIconCounter )

    {

    // Used to disable icon

    const TInt KIconNotSupported = -1;

    // Index of icon used in AB-column

    TInt iconIndexAB = KIconNotSupported;

    // Index of icon used in D-column

    TInt iconIndexD = KIconNotSupported;

#pragma message("TODO: The HBufC buffer sizes could be optimized if possible:")

    // First line of lbx item text (plugin caption)

    HBufC* firstLabelBuf = HBufC::NewLC( KGSCaptionBufSize );

    TPtr firstLabel = firstLabelBuf->Des();

    // Second line of lbx item text (optional)

    HBufC* secondLabelBuf = HBufC::NewLC( KGSCaptionBufSize );

    TPtr secondLabel = secondLabelBuf->Des();

    // The complete formatted lbx item string which is added to lbx

    HBufC* lbxItemStringBuf = HBufC::NewLC( KGSCaptionBufSize * 2 );

    TPtr lbxItemString = lbxItemStringBuf->Des();

    // Separates lbx item elements

    _LIT( KTab, "\t" );

    // Normal icon in AB-Column

    CGulIcon* iconAB = NULL;

    // Small icon used in D-column (optional)

    CGulIcon* iconD = NULL;

    // Add the plugin to visible plugins array:

    iVisiblePlugins->AppendL( aPlugin );

    // 1) Read item descriptor from plugin:

    TRAPD( captionErr,

           aPlugin->GetCaptionL( firstLabel );

         )

    // If plugin caption fails, set caption to error string.

    if( captionErr != KErrNone )

        {

        _LIT( KGSParentPluginCaptionErrorTxt, "Error" );

        firstLabel.Append( KGSParentPluginCaptionErrorTxt );

        }

       else

        {

        __GSLOGSTRING2( "[CGSParentContainer] 0x%X::GetCaptionL Error: %d",

        aPlugin->Id().iUid, captionErr );

        }

    // 2) Add icons if listbox uses them:

    //    - AB-column icon

    //    - D-column icon

    switch( iListBoxType )

        {

        case EGSListBoxTypeSingleLarge:

        case EGSListBoxTypeDouble2Large:

        case EGSListBoxTypeDoubleLarge:

            {

            // This might fail because plugin implementors might do funny stuff.

            // GS Must still behave well...

            TRAPD( iconErr,

                   iconAB = aPlugin->CreateIconL( KGSIconTypeLbxItem );

                 )

            if( iconErr != KErrNone )

                {

                // Use default icon because plugin implementor's CreateIconL

                // failed. If this fails, everything is lost anyway so might as

                // well leave (abort GS).

                iconAB = aPlugin->CGSPluginInterface::CreateIconL( KGSIconTypeLbxItem );

                __GSLOGSTRING2( "[CGSParentContainer] CreateIconL for 0x%X failed:%d",

                                aPlugin->Id().iUid,

                                iconErr );

                }

            if( iconAB ) // Append only if not NULL (not supported)

                {

                CleanupStack::PushL( iconAB );

                aIconArray->AppendL( iconAB );

                CleanupStack::Pop( iconAB );

                iconIndexAB = aIconCounter;

                aIconCounter++;

                }

            TRAPD( iconDColErr,

                   iconD = aPlugin->CreateIconL( KGSIconTypeDColumn );

                 )

            if( iconDColErr != KErrNone )

                {

                iconD = aPlugin->CGSPluginInterface::CreateIconL( KGSIconTypeDColumn );

                __GSLOGSTRING2( "[CGSParentContainer] CreateIconL for 0x%X failed:%d",

                                aPlugin->Id().iUid,

                                iconErr );

                }

            if( iconD ) // Append only if not NULL (not supported)

                {

                CleanupStack::PushL( iconD );

                aIconArray->AppendL( iconD );

                CleanupStack::Pop( iconD );

                iconIndexD = aIconCounter;

                aIconCounter++;

                }

            break;

            }

        case EGSListBoxTypeSettings:

            break;

        default:

            break;

        }

    /**

    * 3) Create formatted item string. Lbx item's format string depends

    *    on lbx type.

    */

    switch( iListBoxType )

        {

        /**

        * list_single_large_pane:

        * list item string format: "1\tTextLabel\t0\t0"

        * where 0 is an index to icon array

        */

        case EGSListBoxTypeSingleLarge:

            {

            if( iconIndexAB != KIconNotSupported ) lbxItemString.AppendNum( iconIndexAB ); // AB-Column icon

            lbxItemString.Append( KTab );

            lbxItemString.Append( firstLabel );

            break;

            }

        /**

        * list_setting_pane and list_big_single_setting_pane:

        * list item string format: "\tFirstLabel\t\tValueText"

        * list item string format: "\tFirstLabel\t0\t"

        * list item string format: "\tFirstLabel\t\tValueText\t*"

        * list item string format: "\tFirstLabel\t\t\t\tSecondLabel"

        * where 0 is an index to icon array

        */

        case EGSListBoxTypeSettings:

            {

            aPlugin->GetValue( EGSPluginKeySettingsItemValueString, secondLabel );

            lbxItemString.Append( KTab );

            lbxItemString.Append( firstLabel );

            lbxItemString.Append( KTab );

            lbxItemString.Append( KTab );

            lbxItemString.Append( secondLabel );

            break;

            }

        /**

        * list_double2_large_graphic_pane:

        * list item string format: "1\tFirstLabel\tSecondLabel\t0"

        * where 0 is an index of small (13x13) icon in icon array

        *   and 1 is an index of a thumbnail image

        */

        case EGSListBoxTypeDouble2Large:

        case EGSListBoxTypeDoubleLarge:

            {

            aPlugin->GetValue( EGSPluginKeySettingsItemValueString, secondLabel );

            if( iconIndexAB != KIconNotSupported ) lbxItemString.AppendNum( iconIndexAB ); // AB-Column icon

            lbxItemString.Append( KTab );

            lbxItemString.Append( firstLabel ); // FirstLabel

            lbxItemString.Append( KTab );

            lbxItemString.Append( secondLabel ); // SecondLabel

            lbxItemString.Append( KTab );

            if( iconIndexD != KIconNotSupported ) lbxItemString.AppendNum( iconIndexD ); // D-Column Icon

            break;

            }

        }

    aItemTextArray->AppendL( lbxItemString );

    CleanupStack::PopAndDestroy( lbxItemStringBuf );

    CleanupStack::PopAndDestroy( secondLabelBuf );

    CleanupStack::PopAndDestroy( firstLabelBuf );

    }

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

// CGSParentContainer::ListBox()

//

//

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

//

CEikListBox* CGSParentContainer::ListBox()

    {

    return iListBox;

    }

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

// CGSParentContainer::SizeChanged

// called by framework when the view size is changed

//

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

//

void CGSParentContainer::SizeChanged()

    {

    if ( iListBox )

        {

        iListBox->SetRect( Rect() );

        }

    }

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

// CGSParentContainer::CountComponentControls

//

//

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

//

TInt CGSParentContainer::CountComponentControls() const

    {

    return 1;

    }

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

// CGSParentContainer::ComponentControl

//

//

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

//

CCoeControl* CGSParentContainer::ComponentControl(TInt /*aIndex*/) const

    {

    return iListBox;

    }

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

// CGSParentContainer::TKeyResponse OfferKeyEventL

// Called when a key is pressed.

//

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

//

TKeyResponse  CGSParentContainer::OfferKeyEventL( const TKeyEvent& aKeyEvent,

                                                  TEventCode aType )

    {

    switch ( aKeyEvent.iCode )

        {

        case EKeyUpArrow:

        case EKeyDownArrow:

            {

            TKeyResponse listboxResp =

                iListBox->OfferKeyEventL( aKeyEvent, aType );

            if ( iParentPlugin )

                {

                iParentPlugin->CheckMiddleSoftkeyLabelL();

                }

            return listboxResp;

            }

        case EKeyLeftArrow:

        case EKeyRightArrow:

            // Listbox takes all events even if it doesn't use them

            return EKeyWasNotConsumed;

        default:

            break;

        }

    // now it's iListBox's job to process the key event

    return iListBox->OfferKeyEventL( aKeyEvent, aType );

    }

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

// CGSParentContainer::HandleListBoxEventL

//

//

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

void CGSParentContainer::HandleListBoxEventL( CEikListBox* aListBox,

                                              TListBoxEvent aEventType )

    {

    __GSLOGSTRING1(

        "[CGSParentContainer] HandleListBoxEventL aEventType:%d",

        aEventType);

    switch (aEventType)

        {

        case EEventEnterKeyPressed:

        case EEventItemDoubleClicked:

            {

            __GSLOGSTRING1(

                "[CGSParentContainer] Activating view plugin in index[%d]",