Passing data between two views

[vcribe]

Hello All ,
I am new to this development , plz help me .

My Application:
Display a image and text in scrollable View2 when an item is selected in a Listbox in View1.

Status: Till now i could place a list box , then select a item. and also i could display a image in View2. But , now my problem is i could not make the View2 scrollable and also am not able to display text with the image .

Plz find my programm pasted here and kindly help me.

Following are the Views :

1> CListView
CListConatiner
2> CDataView
CDataContainer

#ifndef __LISTVIEW_H__
#define __LISTVIEW_H__

#include <aknview.h>
#include <ListContainer.h>

class CListContainer ;
class CListView : public CAknView
{
public :
static CListView* NewL( );
static CListView* NewLC( );
~CListView();
TInt GetCurrentItem();
public :
TUid Id() const;
void HandleCommandL(TInt aCommand);
void DoActivateL(const TVwsViewId& aPrevViewId,
TUid aCustomMessageId,
const TDesC8& aCustomMessage);
void DoDeactivate();
private:
CListView();
void ConstructL();
public:
CListContainer * iContainer ;
TUid iIdentifier;
TInt iCurrentItem;
};

#endif // __LISTVIEW_H__


/* Copyright (c) 2004, Nokia Mobile Phones. All rights reserved */

#include <aknviewappui.h>
#include <avkon.hrh>
#include <aknconsts.h>

#include <Views.rsg>
#include "ListView.h"
#include "ListContainer.h"
#include "Views.hrh"

CListView* CListView::NewL( )
{
CListView* self = CListView::NewLC( );
CleanupStack::Pop( self );
return self;
}

CListView* CListView::NewLC()
{
CListView* self = new (ELeave) CListView();
CleanupStack::PushL( self );
self->ConstructL();
return self;
}

CListView::CListView()
{
}
CListView::~CListView()
{
}
void CListView::ConstructL()
{
BaseConstructL( R_MULTIVIEWS_VIEW1 );
}


TUid CListView::Id( ) const
{
return TUid::Uid( EMultiViewsView1Id );
}

void CListView::DoActivateL( const TVwsViewId& /*aPrevViewId*/,
TUid /*aCustomMessageId*/,
const TDesC8& /*aCustomMessage*/)
{
ASSERT(!( iContainer ));
iContainer = CListContainer::NewL( ClientRect( ) );
}


TInt CListView::GetCurrentItem()
{
iCurrentItem = iContainer->iCurrentItem;
return iCurrentItem ;
}

void CListView::DoDeactivate()
{
if (iContainer)
{
AppUi()->RemoveFromStack( iContainer );
delete iContainer ;
iContainer = NULL ;
}
}

void CListView::HandleCommandL(TInt aCommand)
{

if ( aCommand == EMultiViewsSwitchToView2)
{
AppUi()->ActivateLocalViewL( TUid::Uid( EMultiViewsView2Id ) );
}
else
{
AppUi()->HandleCommandL(aCommand);
}
}


#ifndef LISTCONTAINER_H
#define LISTCONTAINER_H

// INCLUDES
#include <coecntrl.h>
#include <eiktxlbx.h>
#include <eiktxlbm.h>
#include <eiklabel.h>
#include <barsread.h>

// FORWARD DECLARATIONS
class CEikLabel ; // for example labels
class CEikTextListBox ;
class CTextListBoxModel ;

class CListContainer : public CCoeControl, MCoeControlObserver , public MEikListBoxObserver
{
public: // Constructors and destructor
void StoreItemNo( TInt iCurrent);
TKeyResponse OfferKeyEventL( const TKeyEvent& aKeyEvent , TEventCode aType );
void ConstructL(const TRect& aRect);
void ConstructControls();
void GetOurMenu();
void initListBox();
void Setno();
~CListContainer();

public:
static CListContainer* NewL(const TRect& aRect);
static CListContainer* NewLC(const TRect& aRect);

public:
void SizeChanged();
TInt CountComponentControls() const;
CCoeControl* ComponentControl(TInt aIndex) const;
void Draw(const TRect& aRect) const;
virtual void HandleListBoxEventL( CEikListBox * aListBox , TListBoxEvent aEventType );
void HandleControlEventL(CCoeControl* aControl,TCoeEvent aEventType);
public:
CEikTextListBox * iListBox;
CDesCArray * itemDrive;
CTextListBoxModel * modelDrive;
TInt iCurrentItem;
};
#endif

#include "ListContainer.h"
#include <EikEnv.h>
#include <Views.rsg>
#include <Views.hrh>
#include <eiklabel.h> // for example label control
#include <aknlists.h>
#include <aknviewappui.h>
#include <aknappui.h>
#include <ViewsAppUi.h>
#include "DataContainer.h"
TKeyResponse CListContainer::OfferKeyEventL( const TKeyEvent& aKeyEvent , TEventCode aType )
{
if ( iListBox )
{
iListBox->UpdateScrollBarsL();
return iListBox->OfferKeyEventL(aKeyEvent, aType);
}
return EKeyWasNotConsumed ;
}

void CListContainer::ConstructControls()
{
TRect rect ;
rect = Rect();
rect.Shrink( 20 ,20 );
TSize size ;
size.iHeight = rect.Height();
size.iWidth = rect.Width();

iListBox = new(ELeave) CEikTextListBox ;
iListBox->SetContainerWindowL( *this );

TResourceReader reader;
CEikonEnv::Static()->CreateResourceReaderLC(reader,R_LISTBOX );
iListBox->SetListBoxObserver(this);
iListBox->ConstructFromResourceL(reader);
iListBox->CreateScrollBarFrameL( ETrue );
iListBox->ScrollBarFrame()->SetScrollBarVisibilityL( CEikScrollBarFrame::EOn , CEikScrollBarFrame::EAuto );
iListBox->SetExtent( TPoint( 10 , 10 ) , size );
CleanupStack::PopAndDestroy( ); // Resource reader
initListBox();
}

void CListContainer::ConstructL(const TRect& aRect)
{
CreateWindowL();
ConstructControls();
SetRect(aRect);
ActivateL();
}


CListContainer::~CListContainer()
{
delete iListBox ;
}

void CListContainer::StoreItemNo( TInt iCurrent)
{
iCurrentItem = iCurrent ;
}

void CListContainer::SizeChanged()
{

TRect rect ;
rect = Rect();
rect.Shrink( 0 ,20 );
TSize size ;
size.iHeight = rect.Height();
size.iWidth = rect.Width();
iListBox->SetExtent( TPoint( 0 ,0 ) , size );
// iListBox->UpdateScrollBarsL();
}

TInt CListContainer::CountComponentControls() const
{
return 1; // return nbr of controls inside this container
}


CCoeControl* CListContainer::ComponentControl(TInt aIndex) const
{
switch ( aIndex )
{
case 0 :
return iListBox;
default:
return NULL;
}
}

CListContainer* CListContainer::NewL(const TRect& aRect)
{
CListContainer * self = CListContainer::NewLC(aRect);
CleanupStack::Pop( self );
return self ;
}

CListContainer* CListContainer::NewLC(const TRect& aRect)
{
CListContainer * self = new (ELeave) CListContainer;
CleanupStack::PushL( self );
self->ConstructL( aRect );
return self;
}

void CListContainer::GetOurMenu()
{
TPtrC ourmenu[] = {
_L("WHOPPER@Sandwiches") ,
_L("Fire-Grilled Burgers") ,
_L("Chicken and Fish") ,
_L("Salads") ,
_L("Breakfast") ,
_L("Treats") ,
_L("Sides and Beverages") ,
_L("Kids Menu")
};

iListBox->Reset();
itemDrive->Reset();

for( int i = 0 ; i < 8 ; i++ )
{
TBuf<32> aBuff;
aBuff.Append( ourmenu[ i ] );
itemDrive->InsertL( i , aBuff );
iListBox->HandleItemAdditionL();
}
iListBox->DrawNow( );
}
void CListContainer::Draw(const TRect& aRect) const
{
CWindowGc& gc = SystemGc();
gc.SetPenStyle( CGraphicsContext::ENullPen );
gc.SetBrushColor( KRgbWhite ) ;
gc.SetBrushStyle( CGraphicsContext::ESolidBrush );
gc.DrawRect( aRect );
}

// ---------------------------------------------------------
// CListContainer::HandleControlEventL(
// CCoeControl* aControl,TCoeEvent aEventType)
// ---------------------------------------------------------
//
void CListContainer::HandleControlEventL(
CCoeControl* /*aControl*/,TCoeEvent /*aEventType*/)
{
}
void CListContainer::initListBox()
{
itemDrive = new ( ELeave ) CDesCArrayFlat( 10 );
modelDrive = iListBox->Model();
modelDrive->SetItemTextArray( itemDrive );
GetOurMenu();
}

void CListContainer::Setno()
{
this->iCurrentItem = iListBox->CurrentItemIndex();

//TPtrC str = itemDrive->MdcaPoint( iCurrentItem );
//StoreItemNo( iCurrentItem );
// ((CDataView *)((CViewsAppUi *)(( CAknViewAppUi * )iEikonEnv->EikAppUi())))->iContainer->SetInt( iCurrentItem );
}
void CListContainer::HandleListBoxEventL( CEikListBox * aListBox , TListBoxEvent aEventType )
{

if((aListBox == iListBox) && ( aEventType == EEventItemClicked ) )
{
(( CViewsAppUi * )iEikonEnv->EikAppUi())->iCurrentItem = iListBox->CurrentItemIndex( );
(( CAknViewAppUi * )iEikonEnv->EikAppUi())->ActivateLocalViewL( TUid::Uid( EMultiViewsView2Id ) );
//Setno();
}
}

Second View is posted in next post .

[vcribe]

/* Copyright (c) 2004, Nokia Mobile Phones. All rights reserved */

#include "DataContainer.h"
#include <EikEnv.h>
#include <palbimageviewerbasic.h>
#include "ListView.h"
#include <ViewsAppUi.h>
#include <Views.rsg>

#define KLeftImagePositionInTheText 28
#define KRightImagePositionInTheText 42
#define KEndofCenterFormat 60
#define KLeftNokia 12
#define KRightNokia 17
// 567 twips == 1cm
#define KKImageWidth 290
#define KImageHeight 120

CDataContainer* CDataContainer::NewL(const TRect& aRect)
{
CDataContainer* self = CDataContainer::NewLC(aRect);
CleanupStack::Pop(self);
return self;
}

CDataContainer* CDataContainer::NewLC(const TRect& aRect)
{
CDataContainer* self = new (ELeave) CDataContainer;
CleanupStack::PushL(self);
self->ConstructL(aRect);
return self;
}

CDataContainer::~CDataContainer()
{
delete iImage ;
delete iRtEd ;
}

void CDataContainer::WhopperSandwiches( const TRect& aRect )
{
iImage = CPAlbImageViewerBasic::NewL(this,TRect(TPoint( 15 , 15 ) , TSize(aRect.Width()-30,aRect.Height()-30)));
iImage->SetImageNameAndDisplaymodeL( _L("c:\\Images\\water.png") , CEikonEnv::Static()->DefaultDisplayMode());
iImage->LoadImageL();
iRtEd = new(ELeave) CEikRichTextEditor;
Prepare( );
iRtEd->ConstructL(this,0,0,0);
iRtEd->SetFocus(ETrue);
SetRect( aRect );
}

void CDataContainer::FireGrilledBurgers( const TRect & aRect )
{
iImage = CPAlbImageViewerBasic::NewL( this , TRect(TPoint( 15 , 15 ), TSize(aRect.Width()-30 , aRect.Height()-30)) );
iImage->SetImageNameAndDisplaymodeL( _L("c:\\Images\\coffee.png") , CEikonEnv::Static()->DefaultDisplayMode() );
iImage->LoadImageL();
iRtEd = new(ELeave) CEikRichTextEditor;
Prepare( );
iRtEd->ConstructL(this,0,0,0);
iRtEd->SetFocus(ETrue);
SetRect( aRect );
}

void CDataContainer::SetImageAndText( const TRect& aRect )
{
// TInt no = GetCurrentItem() ;
TInt no = (( CViewsAppUi * )iEikonEnv->EikAppUi())->iCurrentItem;

switch( no )
{
case 0:
WhopperSandwiches( aRect );
break ;
case 1:
FireGrilledBurgers( aRect );
break ;
case 2:

break;
default:
WhopperSandwiches( aRect );
}
}

void CDataContainer::ConstructL( const TRect& aRect )
{
CreateWindowL();
SetRect(aRect);
SetImageAndText( aRect );
ActivateL( );
}

void CDataContainer::DemoL()
{
TBuf<256> Demobuf;
CEikonEnv::Static()->ReadResource( Demobuf, R_TYPE_II_DIALOG_TBUF_DEMO_TEXT);
iRtEd->SetTextL(&Demobuf);
iRtEd->RichText()->InsertL( KLeftImagePositionInTheText , CEditableText::EParagraphDelimiter);
iRtEd->SetSelectionL( KLeftImagePositionInTheText , KEndofCenterFormat );
CParaFormat paraFormat;
TParaFormatMask paraFormatMask;
paraFormatMask.SetAttrib(EAttAlignment); // set the mask
paraFormat.iHorizontalAlignment = CParaFormat::ECenterAlign;
iRtEd->ApplyParaFormatL( &paraFormat , paraFormatMask );

// Do some color change
iRtEd->SetSelectionL( KLeftImagePositionInTheText , KRightImagePositionInTheText );
TCharFormat charFormat ;
TCharFormatMask charFormatMask ;
charFormat.iFontPresentation.iTextColor=KRgbBlue;
charFormatMask.SetAttrib(EAttColor );
iRtEd->ApplyCharFormatL(charFormat, charFormatMask);
iRtEd->SetSelectionL(KLeftNokia, KRightNokia);
iRtEd->ApplyCharFormatL(charFormat, charFormatMask);

// Insert a dot at the end
iRtEd->RichText()->InsertL(iRtEd->Text()->DocumentLength()/* at the end*/,
_L("."));
}
TInt CDataContainer::GetCurrentItem()
{
return (( CListView *)(( CViewsAppUi * )(( CAknViewAppUi * )iEikonEnv->EikAppUi())))->iContainer->iCurrentItem ;
}
void CDataContainer::Prepare()
{
iRtEd->SetAknEditorCase(EAknEditorLowerCase);
iRtEd->SetAknEditorFlags
(
EAknEditorFlagFixedCase|
EAknEditorFlagEnableScrollBars
);

}
CDataContainer::CDataContainer()
{
}

TInt CDataContainer::CountComponentControls() const
{
return 2;
}

void CDataContainer::Draw(const TRect& aRect) const
{
CWindowGc& gc = SystemGc( );
gc.SetPenStyle( CGraphicsContext::ENullPen );
gc.SetBrushColor( KRgbWhite );
gc.SetBrushStyle( CGraphicsContext::ESolidBrush );
gc.DrawRect( aRect );
}

CCoeControl* CDataContainer::ComponentControl( TInt aIndex ) const
{
switch( aIndex )
{
case 0 :
return iImage ;
case 1 :
return iRtEd ;
default :
return NULL;
}
}

#ifndef VIEWSAPPUI_H
#define VIEWSAPPUI_H

// INCLUDES
#include <eikapp.h>
#include <eikdoc.h>
#include <e32std.h>
#include <coeccntx.h>
#include <aknappui.h>
#include "DataView.h"
#include "ListView.h"
#include <aknviewappui.h>
// FORWARD DECLARATIONS
class CListContainer;


// CLASS DECLARATION

/**
* Application UI class.
* Provides support for the following features:
* - EIKON control architecture
*
*/
class CViewsAppUi : public CAknViewAppUi
{
public:
void ConstructL();
~CViewsAppUi();
void GetCurrentItem();
private:
void DynInitMenuPaneL(TInt aResourceId,CEikMenuPane* aMenuPane);
private:
void HandleCommandL(TInt aCommand);
virtual TKeyResponse HandleKeyEventL(
const TKeyEvent& aKeyEvent,TEventCode aType);

public: //Data
TInt iCurrentItem ;
CDataView * idataview;
CListView * ilistview;
};

#endif

// End of File

Help me .
Thanks and Regards

[sopta007]

Hi, too long a code for me to go through all of it, but one thing striked me:

void CListContainer::ConstructControls()
{
TRect rect ;
rect = Rect();
...
}

void CListContainer::ConstructL(const TRect& aRect)
{
CreateWindowL();
ConstructControls();
SetRect(aRect);
ActivateL();
}

Please, try to call SetRect(aRect) before constructing the listbox, as Rect() now doesn't return the right rectangle....

\

[vcribe]

Thanks for replying but the actual problem i have is in passing data between views.
Can u give me ur mail id , so that i can send u zip containing the application.
Need help .
Plz do the needful.
Regards .