examples/ForumNokia/ContactsModel/src/ContactsModelDocument.cpp

/*
 * Copyright (c) 2008-2010 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
 *    
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *    
 *  * Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *  * Neither the name of Nokia Corporation nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *    
 *    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 *    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 *    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 *    DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 *    FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 *    DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 *    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 *    CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 *    OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 *    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *    
 *    Description:  
 */

// INCLUDE FILES
#include "ContactsModelDocument.h"
#include "ContactsModelAppUi.h"

#include <cntfilt.h>
#include <cntitem.h>

const TInt KBufferSize = 256;

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

// constructor
CContactsModelDocument::CContactsModelDocument(CEikApplication& aApp)
: CAknDocument(aApp)
    {
    }

// destructor
CContactsModelDocument::~CContactsModelDocument()
    {
        delete iContacts;
        delete iTextDef;
    }

// EPOC default constructor can leave.
void CContactsModelDocument::ConstructL()
    {
        iContacts = NULL;
        UpdateContactsL();
        //create custom text definition to display contact item
        iTextDef = CContactTextDef::NewL();
        //add given name field and family name field
        iTextDef->AppendL(TContactTextDefItem(KUidContactFieldGivenName, _L(" ")));
        iTextDef->AppendL(TContactTextDefItem(KUidContactFieldFamilyName));
    }

// Two-phased constructor.
CContactsModelDocument* CContactsModelDocument::NewL(
        CEikApplication& aApp)     // CContactsModelApp reference
    {
    CContactsModelDocument* self = new (ELeave) CContactsModelDocument( aApp );
    CleanupStack::PushL( self );
    self->ConstructL();
    CleanupStack::Pop();

    return self;
    }

// Get the contact information
HBufC * CContactsModelDocument::GetItemL(TInt anIndex)
        {
        // Open the default contact database
        CContactDatabase* contactsDb = CContactDatabase::OpenL();
        CleanupStack::PushL(contactsDb);

        TBuf<KBufferSize> buf;
        //read contact item with the default text definition
        if((*iContacts).Count() >= anIndex)
                contactsDb->ReadContactTextDefL((*iContacts)[anIndex], buf, iTextDef);

        CleanupStack::PopAndDestroy(); // contactsDb
        return buf.AllocL();
        }

// return contacts items number
TInt CContactsModelDocument::ItemCount()
        {
        return iContacts->Count();
        }

void CContactsModelDocument::UpdateContactsL()
        {
        //open database
        // Open the default contact database
        CContactDatabase* contactsDb = CContactDatabase::OpenL();
        CleanupStack::PushL(contactsDb);

        CCntFilter *filter = CCntFilter::NewLC();

        //get all contact items (no groups, templates...)
        filter->SetContactFilterTypeALL(EFalse);
        filter->SetContactFilterTypeCard(ETrue);

        contactsDb->FilterDatabaseL(*filter);

        if(iContacts)
        {
                delete iContacts;
                iContacts = NULL;
        }
        iContacts = CContactIdArray::NewL(filter->iIds);

        CleanupStack::PopAndDestroy(2); //filter, contactsDb
        }

TInt CContactsModelDocument::ImportL(RReadStream& aReadStream)
        {
        // Open the default contact database
        CContactDatabase* contactsDb = CContactDatabase::OpenL();
        CleanupStack::PushL(contactsDb);

        TBool result = EFalse;
        TUid p1;
        p1.iUid = KVersitEntityUidVCard;
        CArrayPtr<CContactItem>* imported = contactsDb->ImportContactsL(p1,
                                                                aReadStream,
                                                                result,
                                                                CContactDatabase::ETTFormat);
        imported->ResetAndDestroy();
        delete imported;

        CleanupStack::PopAndDestroy(); // contactsDb

        return result?KErrNone:KErrGeneral;
        }

void CContactsModelDocument::ExportL(RWriteStream& aWriteStream, TInt aExportItem)
        {
        // Open the default contact database
        CContactDatabase* contactsDb = CContactDatabase::OpenL();
        CleanupStack::PushL(contactsDb);

        CContactIdArray* exportContacts = CContactIdArray::NewL();
        CleanupStack::PushL(exportContacts);

        if((*iContacts).Count() >= aExportItem)
                exportContacts->AddL( (*iContacts)[aExportItem] );

        TUid p1;
        p1.iUid = KVersitEntityUidVCard;
        contactsDb->ExportSelectedContactsL(p1,
                                                                *exportContacts,
                                                                aWriteStream,
                                                                CContactDatabase::EExcludeUid);

        CleanupStack::PopAndDestroy(2); // exportContacts, contactsDb
        }

// ----------------------------------------------------
// CContactsModelDocument::CreateAppUiL()
// constructs CContactsModelAppUi
// ----------------------------------------------------
//
CEikAppUi* CContactsModelDocument::CreateAppUiL()
    {
    return new (ELeave) CContactsModelAppUi;
    }

// End of File

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