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chxavfolderpopuplist.cpp：源码内容
							/************************************************************************
 * chxCHXCHXAvFolderPopupList.cpp
 * ------------------------
 *
 * Synopsis:
 *
 * (c) 1995-2003 RealNetworks, Inc. Patents pending. All rights reserved.
 *
 ************************************************************************/
#include "avkon.mbg"
// Include from this project...
#include "chxavmisc.h"
#include "chxavcallback.h"
#include "chxavcleanstring.h"
#include "chxavfolderdisplayinfo.h"
#include "chxavfolderpopuplist.h"
#include "realplayer.hrh"
#include "realplayer.mbg"
#include "chxavcleanupstack.h"
#include "hxsym_debug.h"
namespace
{
   
    //
    // standard folder icon info
    //
    enum
    {
        k_idxFolderIcon = 0
    };
    const CHXAvMisc::ImageInfo folderIconInfo[] = 
    {
        { EMbmAvkonQgn_prop_folder_small, EMbmAvkonQgn_prop_folder_small_mask }
    };
    //
    // root icon info
    //
    enum
    {
        k_idxPhoneIcon = 0,
        k_idxMmcIcon,
        k_idxMmcLockedIcon,
        k_idxMmcAbsentIcon
    };
    static const CHXAvMisc::ImageInfo rootIconInfo[] =
    { 
        {EMbmRealplayerQgn_prop_phone_small,        EMbmRealplayerQgn_prop_phone_small_mask }, 
        {EMbmRealplayerQgn_prop_mmc_small,          EMbmRealplayerQgn_prop_mmc_small_mask   }, 
        {EMbmRealplayerQgn_prop_mmc_locked_small,   EMbmRealplayerQgn_prop_mmc_locked_small_mask   }, 
        {EMbmRealplayerQgn_prop_mmc_non_small,      EMbmRealplayerQgn_prop_mmc_non_small_mask   }, 
    };
} // local
CHXAvFolderPopupList::CHXAvFolderPopupList(TInt& idxSelected, 
                                     TInt& idExitCmd)
: m_idxSelected(idxSelected)
, m_idExitCmd(idExitCmd)
, m_wpBasePath(0)
{
}
CHXAvFolderPopupList::~CHXAvFolderPopupList()
{
}
////////////////////////////////////////////////
// construct helper
void CHXAvFolderPopupList::DoBeginConstructL(TInt resIdPrompt, 
                                          TInt resIdCba, 
                                          TInt resIdSelectButtonText,
                                          const TDesC* pCurrentPath)
{
    // create actual listbox
    m_spListBox = new (ELeave) CAknSingleGraphicPopupMenuStyleListBox;
    CAknPopupList::ConstructL(m_spListBox.Ptr(), resIdCba,
	AknPopupLayouts::EMenuGraphicWindow);
    m_wpBasePath = pCurrentPath;
    
    m_spListBox->ConstructL(this, CEikListBox::ELeftDownInViewRect);
    m_spListBox->CreateScrollBarFrameL(ETrue);
    m_spListBox->ScrollBarFrame()->SetScrollBarVisibilityL(
	CEikScrollBarFrame::EOff, CEikScrollBarFrame::EAuto);
    if( resIdSelectButtonText != -1 )
    {
        // set left button text
        CEikButtonGroupContainer* pCba = ButtonGroupContainer();
        pCba->SetCommandL(0, EAknSoftkeySelect, CHXAvCleanString(resIdSelectButtonText)());
    }
    m_spSelectButton = new (ELeave) CHXAvCallback();
    m_spSelectButton->ConstructL(
        MakeCommand(this, &CHXAvFolderPopupList::ForwardCommandL, TInt(EAknSoftkeySelect)));
    SetTitleL(CHXAvCleanString(resIdPrompt)());
    m_spListBox->SetListBoxObserver(this);
}
////////////////////////////////////////////////
// construct regular folder list
//
void CHXAvFolderPopupList::ConstructL(TInt resIdPrompt, TInt resIdSelectButtonText,
                                   const CDesCArrayFlat* pFolders, const TDesC* pCurrentPath,
                                   TInt idxCurrentItem)
{
    // child folder list gets 'back'
    DoBeginConstructL(resIdPrompt, R_AVP_CBA_MOVE_BACK, resIdSelectButtonText, pCurrentPath);
    SetFolderListItemsL(pFolders);
    m_spListBox->ClearSelection();
    m_spListBox->SetCurrentItemIndex(idxCurrentItem);
    m_spListBox->HandleItemAdditionL();
}
////////////////////////////////////////////////
// construct top-level root media store selection list
void CHXAvFolderPopupList::ConstructL(TInt resIdPrompt, TInt resIdSelectButtonText,
                                   const CHXAvVector<CHXAvMediaFolderInfoPtr>& mediaFolderInfo,
                                   const TDesC* pCurrentPath,
                                   TInt idxCurrentItem)
{
    // top level list gets 'cancel'
    DoBeginConstructL(resIdPrompt, R_AVP_CBA_MOVE_CANCEL, resIdSelectButtonText, pCurrentPath);
    SetRootFolderListItemsL(mediaFolderInfo);
    m_spListBox->ClearSelection();
    m_spListBox->SetCurrentItemIndex(idxCurrentItem);
    m_spListBox->HandleItemAdditionL();
}
//////////////////////////////
//
void
CHXAvFolderPopupList::AttemptExitL(TBool aAccept)
{
    DPRINTF(SYMP_INFO, ("CHXAvFolderPopupList::AttemptExitL() accept = %ldn", aAccept));
    if( aAccept && m_idExitCmd != EOpenFolder)
    {
        DPRINTF(SYMP_INFO, ("CHXAvFolderPopupList::AttemptExitL() command: 'select folder'n"));
        // must have pressed the softkey
        m_idExitCmd = EMoveToFolder;
    }
        
        // 'open' the selected folder
    m_idxSelected = m_spListBox->CurrentItemIndex();
    CAknPopupList::AttemptExitL(aAccept);
}
//////////////////////////////
// create and set icon array for list items
//
void
CHXAvFolderPopupList::CreateAndSetRootIconsL()
{
    // create icon array for list items
    CAknIconArray* pIcons = CHXAvMisc::AllocIconsL(rootIconInfo, ARRAY_COUNT(rootIconInfo));
    AUTO_PUSH_POP(pIcons);
    // transfer icon array ownership to list box
    m_spListBox->ItemDrawer()->FormattedCellData()->SetIconArrayL(pIcons);
}
//////////////////////////////
//
void CHXAvFolderPopupList::CreateAndSetFolderIconsL()
{
    CAknIconArray* pIcons =  CHXAvMisc::AllocIconsL(
        folderIconInfo, ARRAY_COUNT(folderIconInfo),  CHXAvMisc::KAVPAvkonImagePath);
    AUTO_PUSH_POP(pIcons);
    // transfer icon array ownership to list box
    m_spListBox->ItemDrawer()->FormattedCellData()->SetIconArrayL(pIcons);
    
}
//////////////////////////////
// set list box contents to list of folders
//
void CHXAvFolderPopupList::SetFolderListItemsL(const CDesCArrayFlat* pFolders)
{
    HX_ASSERT(m_spListBox);
    HX_ASSERT(pFolders->Count() > 0);
    m_wpFolders = pFolders;
    // create folder display info traits
    CHXAvFolderDisplayInfo displayInfo;
    // create folder icons
    CreateAndSetFolderIconsL();
    
    // create list item entries based on folder list
    CDesCArrayFlat* pItems = new (ELeave) CDesCArrayFlat(20 /*granularity*/);
    AUTO_PUSH_POP(pItems);
    TInt count = pFolders->Count();
    for( TInt idx = 0; idx < count; ++idx )
    {
	const TDesC& name = (*pFolders)[idx];
	if( name.Length() > 0)
	{
            
            TFileName* pPath = CHXAvFile::AllocFileNameL(*m_wpBasePath, name, CHXAvFile::ntFolder);
            AUTO_PUSH_POP_DEL(pPath);
            displayInfo.SetFolderPathL(*pPath);
         
            HBufC* pText = CHXAvMisc::AllocGrListItemL(displayInfo.GetDisplayText(), k_idxFolderIcon);
            AUTO_PUSH_POP_DEL(pText);
            pItems->AppendL(*pText); // copied
	}
    }
    // transfer list ownership to listbox
    CTextListBoxModel* pModel = m_spListBox->Model();
    pModel->SetItemTextArray(pItems);
    pModel->SetOwnershipType(ELbmOwnsItemArray);
}
//////////////////////////////
// set list box contents to list of root media store folders
//
void
CHXAvFolderPopupList::SetRootFolderListItemsL(const CHXAvVector<CHXAvMediaFolderInfoPtr>& mediaFolderInfo)
{
    HX_ASSERT(m_spListBox);
    HX_ASSERT(mediaFolderInfo.Nelements() > 0);
    CreateAndSetRootIconsL();
    CDesCArrayFlat* pItems = new (ELeave) CDesCArrayFlat( CHXAvMisc::k_defaultArrayGranularity );
    AUTO_PUSH_POP(pItems);
    // XXXLCM if you have media folders on the same drive, they will end up with the same name
    for(TInt idx = 0; idx < mediaFolderInfo.Nelements(); ++idx)
    {
        CHXAvMediaFolderInfoPtr spInfo = mediaFolderInfo[idx];
        spInfo->UpdateDriveInfo();
        const CHXAvFile::DriveInfo& info = spInfo->GetDriveInfo();
        // get display text
        HBufC* pbuffDesc = spInfo->AllocListDescriptionL();
        AUTO_PUSH_POP_DEL(pbuffDesc);
        // get icon
        TInt idxIcon (k_idxPhoneIcon);
        if( spInfo->IsMmcFolder() )
        {
            switch(info.state)
            {
            case CHXAvFile::dsAccessible:
                idxIcon = k_idxMmcIcon;
                break;
            case CHXAvFile::dsLocked:
                idxIcon = k_idxMmcLockedIcon;
                break;
            default:
                idxIcon = k_idxMmcAbsentIcon;
                break;
            }
        }
        HBufC* pLine = CHXAvMisc::AllocGrListItemL(*pbuffDesc, idxIcon);
        AUTO_PUSH_POP_DEL(pLine);
        pItems->AppendL(*pLine);
    }
   
    // transfer list ownership to listbox
    CTextListBoxModel* pModel = m_spListBox->Model();
    pModel->SetItemTextArray(pItems);
    pModel->SetOwnershipType(ELbmOwnsItemArray);
}
////////////////////////////////////////////
//
bool CHXAvFolderPopupList::FolderHasChildren(TInt idxFolder)
{
    bool bHasChildren = true;
    // XXXLCM for root media store selection list we assume there are children
    
    if( m_wpBasePath && m_wpFolders)
    {
        // need to check
        
        //CTextListBoxModel* pModel = m_spListBox->Model();
        //TPtrC text = CHXAvMisc::TextChunk(pModel->ItemText(idxFolder), 1);
        TPtrC text = (*m_wpFolders)[idxFolder];
        // alloc qualified folder path
        TFileName* pPath = CHXAvFile::AllocFileNameL(*m_wpBasePath, text, CHXAvFile::ntFolder);
        AUTO_PUSH_POP_DEL(pPath);
  
        const bool bIncludeFolders = true;
        TInt childCount = 0;
        CHXAvFile::GetFolderChildCount(*pPath, childCount, 
                                                bIncludeFolders, CHXAvFile::FilterIncludeNoFiles);
        bHasChildren = (childCount > 0);
    }
    return bHasChildren;
}
////////////////////////////////////////////
//
void CHXAvFolderPopupList::ForwardCommandL(TInt idCommand)
{
    DPRINTF(SYMP_INFO, ("CHXAvFolderPopupList::ForwardCommandL() cmd = %ldn", idCommand));
    // get this popup list to exit; this object is deleted during this call
    ProcessCommandL(idCommand);
}
////////////////////////////////////////////
// MEikListBoxObserver
void CHXAvFolderPopupList::HandleListBoxEventL(CEikListBox* aListBox,TListBoxEvent aEventType)
{
    DPRINTF(SYMP_INFO, ("CHXAvFolderPopupList::HandleListBoxEventL() type = %ldn", aEventType));
    if( aEventType == MEikListBoxObserver::EEventEnterKeyPressed ||
	aEventType == MEikListBoxObserver::EEventItemClicked )
    {
        if( FolderHasChildren(m_spListBox->CurrentItemIndex()) )
        {
	    DPRINTF(SYMP_INFO, ("CHXAvFolderPopupList::HandleListBoxEventL() command: 'open folder'n"));
        
            // 'open' the selected folder
            m_idExitCmd = EOpenFolder;
            if(m_spSelectButton)
            {
                //HX_ASSERT(m_spSelectButton.GetRefCount() >= 2); // us and class client
                m_spSelectButton->Set(10); 
            }
            //ProcessCommandL(EAknSoftkeySelect); // this is unsafe; self-destruct may occur
        }  
        
    }
    else
    {
        CAknPopupList::HandleListBoxEventL(aListBox, aEventType);
    }
}

						