/*

* Copyright (c) 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:

*

*/

#include "MemSpyContainer.h"

// System includes

#include <eikrted.h>  // for example label control

#include <txtrich.h>

#include <apgtask.h>

// Engine includes

#include <memspy/engine/memspyengine.h>

#include <memspy/engine/memspyengineobjectprocess.h>

#include <memspy/engine/memspyengineobjectthread.h>

#include <memspy/engine/memspyengineobjectcontainer.h>

#include <memspy/engine/memspyengineobjectthreadinfoobjects.h>

#include <memspy/engine/memspyengineobjectthreadinfocontainer.h>

// User includes

#include "MemSpyViewMainMenu.h"

#include "MemSpyContainerObserver.h"

CMemSpyContainer::CMemSpyContainer( CMemSpyEngine& aEngine, MMemSpyContainerObserver& aObserver  )

:   iEngine( aEngine ), iObserver( aObserver )

    {

    }

CMemSpyContainer::~CMemSpyContainer()

    {

    delete iPreviousView;

    delete iActiveView;

    }

void CMemSpyContainer::ConstructL(const TRect& aRect)

    {

    CreateWindowL();

    SetRect(aRect);

    PrepareTopLevelViewL();

    ActivateL();

    }

void CMemSpyContainer::NavigateToParentViewL()

    {

    CMemSpyViewBase* parentView = iActiveView->PrepareParentViewL();

    //

    if  ( parentView == NULL )

        {

        // Parent can be null, in which case, revert to top-level view

        PrepareTopLevelViewL();

        }

    else

        {

        SetNewActiveViewL( parentView );

        }

    }

void CMemSpyContainer::NavigateToChildViewL()

    {

    CMemSpyViewBase* childView = iActiveView->PrepareChildViewL();

    //

    if  ( childView != NULL )

        {

        SetNewActiveViewL( childView );

        }

    }

void CMemSpyContainer::HandleCommandL( TInt aCommand )

    {

    switch( aCommand )

        {

	case EMemSpyCmdViewRefresh:

        OnCmdViewRefreshL();

        break;

    default:

        if  ( iActiveView )

            {

            iActiveView->HandleCommandL( aCommand );

            }

        break;

        }

    }

void CMemSpyContainer::OnCmdViewRefreshL()

    {

    if  ( iActiveView )

        {

        TRAPD(err, iActiveView->RefreshL());

        if  ( err != KErrNone )

            {

            // Error during view refreshing (perhaps the thread doesn't exist anymore).

            // Try to replace the active view with its parent...

            NavigateToParentViewL();

            }

        }

    }

void CMemSpyContainer::SizeChanged()

    {

    if  ( iActiveView )

        {

        iActiveView->SetRect( Rect() );

        }

    }

TInt CMemSpyContainer::CountComponentControls() const

    {

    return 1;

    }

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

    {

    return iActiveView;

    }

void CMemSpyContainer::Draw(const TRect& aRect) const

    {

    CWindowGc& gc = SystemGc();

    //

    gc.SetPenStyle(CGraphicsContext::ENullPen);

    gc.SetBrushColor(KRgbGray);

    gc.SetBrushStyle(CGraphicsContext::ESolidBrush);

    gc.DrawRect(aRect);

    }

TKeyResponse CMemSpyContainer::OfferKeyEventL( const TKeyEvent& aKeyEvent, TEventCode aType )

    {

    TKeyResponse response = EKeyWasNotConsumed;

    //

    if  ( iActiveView )

        {

        response = iActiveView->OfferKeyEventL( aKeyEvent, aType );

        }

    //

    return response;

    }

void CMemSpyContainer::HandleMemSpyViewEventL( TViewEventType aEvent, TMemSpyViewType /*aViewType*/, CMemSpyViewBase& aReportingView, TAny* /*aContext*/ )

    {

    if  ( aEvent == EEventItemActioned )

        {

        // Get the view to generate a child

        CMemSpyViewBase* child = aReportingView.PrepareChildViewL();

        if  ( child == NULL )

            {

            // View doesn't have a child - treat it as item activation and

            // report event to observer.

            }

        else

            {

            // Child view becomes the active one

            SetNewActiveViewL( child );

            }

        }

    }

CMemSpyViewBase* CMemSpyContainer::PrepareTopLevelViewL()

    {

    CMemSpyViewMainMenu* view = new(ELeave) CMemSpyViewMainMenu( iEngine, *this );

    CleanupStack::PushL( view );

    view->ConstructL( Rect(), *this );

    SetNewActiveViewL( view );

    CleanupStack::Pop( view );

    return view;

    }

void CMemSpyContainer::SetNewActiveViewL( CMemSpyViewBase* aNewView )

    {

    delete iPreviousView;

    //

    iPreviousView = iActiveView;

    if  ( iPreviousView )

        {

        iPreviousView->MakeVisible( EFalse );

        iPreviousView->SetFocus( EFalse );

        }

    //

    iActiveView = aNewView;

    iActiveView->RefreshL();

    iActiveView->SetFocus( ETrue );

    //

    ReportEventL( MCoeControlObserver::EEventStateChanged );

    }