filelistcontainer.cpp

一个简单的资源管理器

/*
 * Copyright (c) 2009 Nokia Corporation.
 */

// INCLUDE FILES
#include "FileListContainer.h"
#include "FileListEngine.h"
#include "Filelist.hrh"
#include <FileList.rsg>
#include <EIKAPP.H>
#include <eikbtgpc.h>
// ================= MEMBER FUNCTIONS =======================

// ---------------------------------------------------------
// CFileListContainer::ConstructL(const TRect& aRect)
// Symbian two phased constructor
// ---------------------------------------------------------
//
void CFileListContainer::ConstructL(const TRect& aRect)
    {
    CreateWindowL();

    iListBox = new (ELeave) CAknDoubleNumberStyleListBox;

    iListBox->SetContainerWindowL( *this );
    iListBox->ConstructL( this, EAknListBoxMarkableList);

    // Create the scroll indicator
    iListBox->CreateScrollBarFrameL(ETrue);
    iListBox->ScrollBarFrame()
        ->SetScrollBarVisibilityL( CEikScrollBarFrame::EOff, CEikScrollBarFrame::EAuto);

    iListBox->Model()->SetOwnershipType( ELbmOwnsItemArray );
    iListBox->ActivateL();

    // Create the FileListEngine
    iAppEngine = new (ELeave) CFileListEngine;
    iAppEngine->ConstructL();

    SetFileListL(EFileListPictures, EFileListDate);

    SetRect(aRect);
    ActivateL();
    }

// Destructor
CFileListContainer::~CFileListContainer()
    {
    delete iAppEngine;
    delete iListBox;
    }


// ---------------------------------------------------------
// CFileListContainer::SetFileList(TInt aDirectory, TInt aSizeDate)
// This will set up filelist.
// Directory and Size can be changed. See Filelist.hrh for possible values
// This function is located in the container and not in the engine, because it
// activates the listbox.
// ---------------------------------------------------------
//
void CFileListContainer::SetFileListL(TInt aDirectory, TInt aSizeDate)
    {

    // Set the listbox to use the file list model
    CDesCArray* items = static_cast<CDesCArray*>(iListBox->Model()->ItemTextArray());

    // If there are items, they will be removed here
    if (iAppEngine->RemoveItems(items))
        {
        // This makes changes to the actual listbox
        iListBox->HandleItemRemovalL();
        }

    // Let's show directory
    iAppEngine->SetDirectory(aDirectory);
    // Let's decide whether to show file size or modification date
    iAppEngine->SetSizeDate(aSizeDate);
    // Do preparations for the FileList
    if(iAppEngine->StartFileList() == KErrNone)
        {
        // Create FileList Items in the ListBox
        iAppEngine->GetFileListItemsL(items);
        }
    // Close FileList session
    iAppEngine->EndFileList();

    // Refresh the listbox due to model change
    iListBox->HandleItemAdditionL();
    iListBox->SetCurrentItemIndex(0);

    // Set correct middle softkey
    CEikButtonGroupContainer * cbaGroup = iEikonEnv->AppUiFactory()->Cba();
    if( iAppEngine->IsDirListEmpty() )
      {
      // Don't use middle softkey at all
      cbaGroup->SetCommandSetL( R_AVKON_SOFTKEYS_OPTIONS_EXIT );
      }
    else if( aDirectory==EFileListPictures )
      {
      cbaGroup->SetCommandSetL( R_FILELIST_SOFTKEYS_OPTIONS_EXIT__OPEN );
      }
    else if( aDirectory==EFileListSounds ||
       aDirectory==EFileListVideos )
      {
      cbaGroup->SetCommandSetL( R_FILELIST_SOFTKEYS_OPTIONS_EXIT__PLAY );
      }

    iListBox->DrawNow();
    }

// ---------------------------------------------------------
// CFileListContainer::SizeChanged()
// Called by framework when the view size is changed
// ---------------------------------------------------------
//
void CFileListContainer::SizeChanged()
    {
    // control resizing
    TRect rect = Rect();
    iListBox->SetExtent(TPoint(0,0),rect.Size());
    }


// ---------------------------------------------------------
// CFileListContainer::OffeKeyEventL()
// Called by framework when the view size is changed
// ---------------------------------------------------------
//
TKeyResponse CFileListContainer::OfferKeyEventL(
    const TKeyEvent& aKeyEvent,TEventCode aType)
    {
    TKeyResponse ret;

    // See if we have a selection
    TInt code = aKeyEvent.iCode;
    switch(code)
        {
    // is navigator button pressed
      case EKeyOK:
            iAppEngine->LaunchCurrentL(iListBox->CurrentItemIndex());
            ret = EKeyWasConsumed;
            break;

        default:
            // Let Listbox take care of its key handling
            ret = iListBox->OfferKeyEventL(aKeyEvent, aType);
            break;
        }
    return ret;
    }

// ---------------------------------------------------------
// CFileListContainer::LaunchCurrentL()
// ---------------------------------------------------------
//
void CFileListContainer::LaunchCurrentL()
    {
    iAppEngine->LaunchCurrentL(iListBox->CurrentItemIndex());
    }

// ---------------------------------------------------------
// CFileListContainer::CountComponentControls() const
// ---------------------------------------------------------
//
TInt CFileListContainer::CountComponentControls() const
    {
    // return number of controls inside this container
    return 1;
    }

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

// ---------------------------------------------------------
// CFileListContainer::Draw(const TRect& aRect) const
// ---------------------------------------------------------
//
void CFileListContainer::Draw(const TRect& aRect) const
    {
    CWindowGc& gc = SystemGc();
    // drawing code
    gc.SetPenStyle(CGraphicsContext::ENullPen);
    gc.SetBrushColor(KRgbGray);
    gc.SetBrushStyle(CGraphicsContext::ESolidBrush);
    gc.DrawRect(aRect);
    }

// ---------------------------------------------------------
// CFileListContainer::HandleControlEventL(
//     CCoeControl* aControl,TCoeEvent aEventType)
// ---------------------------------------------------------
//
void CFileListContainer::HandleControlEventL(
    CCoeControl* /*aControl*/,TCoeEvent /*aEventType*/)
    {
    }

// End of File