void CLibraryTileView::Update()
{
CSingleLock oLock( &Library.m_pSection );
if ( ! oLock.Lock( 250 ) )
{
Invalidate();
return;
}
CLibraryTreeItem* pFolders = GetFolderSelection();
CAlbumFolder* pFolder = NULL;
if ( pFolders == NULL || pFolders->m_pVirtual == NULL )
{
pFolder = Library.GetAlbumRoot();
}
else
{
if ( pFolders->m_pSelNext != NULL || pFolders->m_pVirtual->GetFileCount() > 0 )
{
if ( ! empty() )
{
clear();
Invalidate();
}
return;
}
pFolder = pFolders->m_pVirtual;
}
DWORD nCookie = GetFolderCookie();
bool bChanged = false;
for ( iterator pTile = begin(); pTile != end(); )
{
CAlbumFolder* pAlbum = (*pTile)->GetAlbum();
if ( pAlbum && pAlbum->GetParent() == pFolder )
{
bChanged = (*pTile)->Update() || bChanged;
pAlbum->m_nListCookie = nCookie;
++pTile;
}
else
{
if ( (*pTile)->m_bSelected ) Select( pTile, TRI_FALSE );
if ( pTile == m_pFocus ) m_pFocus = end();
if ( pTile == m_pFirst ) m_pFirst = end();
pTile = m_oList.erase( pTile );
bChanged = true;
}
}
if ( bChanged )
{
CRect rcClient;
GetClientRect( &rcClient );
int nMax = (int)( ( size() + m_nColumns - 1 ) / m_nColumns ) * m_szBlock.cy;
m_nScroll = max( 0, min( m_nScroll, nMax - rcClient.Height() + 1 ) );
}
for ( POSITION pos = pFolder ? pFolder->GetFolderIterator() : NULL; pos; )
{
CAlbumFolder* pChild = pFolder->GetNextFolder( pos );
if ( pChild->m_nListCookie != nCookie )
{
m_oList.push_back( new CLibraryTileItem( pChild ) );
pChild->m_nListCookie = nCookie;
bChanged = true;
}
}
if ( bChanged )
{
// ToDo: Review if still necessary for modern libs, and no boost::ptr_list
// Crude workaround broken std::list::sort (vc++7.1):
// sort() may invalidate at the end iterator
// As of Boost 1.33.0, ptr_list does not provide
// iterator versions of sort, which might solve this problem just as well.
BOOL bFocusAtEnd = m_pFocus == m_oList.end();
BOOL bFirstAtEnd = m_pFirst == m_oList.end();
m_oList.sort( SortList() );
if ( bFocusAtEnd ) m_pFocus = m_oList.end();
if ( bFirstAtEnd ) m_pFirst = m_oList.end();
UpdateScroll();
}
}
