void CGridView::reloadData()
{
#if USING_LUA
CCAssert(
(m_nDataSourceAdapterScriptHandler != 0) ||
(m_pDataSourceAdapterListener && m_pDataSourceAdapterHandler), "reloadData");
#else
CCAssert(m_pDataSourceAdapterListener && m_pDataSourceAdapterHandler , "reloadData");
#endif
CCAssert((int)m_tCellsSize.width != 0 && (int)m_tCellsSize.height != 0, "reloadData");
CCAssert(m_eDirection == eScrollViewDirectionVertical, "reloadData");
CCAssert(m_uColumns != 0, "reloadData");
list<CGridViewCell*>::iterator iter = m_lCellsUsed.begin();
while(iter != m_lCellsUsed.end())
{
CGridViewCell* pCell = (*iter);
m_lCellsFreed.push_back(pCell);
iter = m_lCellsUsed.erase(iter);
m_pContainer->removeChild(pCell, true);
pCell->reset();
}
m_sIndices.clear();
m_vPositions.clear();
this->updatePositions();
this->setContentOffsetToTop();
this->onScrolling();
relocateContainer();
}
void CGridView::onScrolling()
{
unsigned uBeginRow = 0, uEndRow = 0;
uBeginRow = cellBeginRowFromOffset( getContentOffset() );
uEndRow = cellEndRowFromOffset( getContentOffset() );
#if 0
CCLOG("row begin %u end %u", uBeginRow, uEndRow);
#endif
while( !m_lCellsUsed.empty() )
{
CGridViewCell* pCell = m_lCellsUsed.front();
unsigned int uRow = pCell->getRow();
unsigned int uIdx = pCell->getIdx();
if( uRow < uBeginRow )
{
m_sIndices.erase(uIdx);
m_lCellsUsed.pop_front();
m_lCellsFreed.push_back(pCell);
pCell->reset();
m_pContainer->removeChild(pCell, true);
}
else
{
break;
}
}
while( !m_lCellsUsed.empty() )
{
CGridViewCell* pCell = m_lCellsUsed.back();
unsigned int uRow = pCell->getRow();
unsigned int uIdx = pCell->getIdx();
if( uRow > uEndRow && uRow < m_uRows )
{
m_sIndices.erase(uIdx);
m_lCellsUsed.pop_back();
m_lCellsFreed.push_back(pCell);
pCell->reset();
m_pContainer->removeChild(pCell, true);
}
else
{
break;
}
}
for( unsigned int row = uBeginRow; row <= uEndRow && row < m_uRows; ++row )
{
unsigned int nCellBeginIndex = cellFirstIndexFromRow(row);
unsigned int nCellEndIndx = nCellBeginIndex + m_uColumns;
unsigned int idx = nCellBeginIndex;
for(; idx < nCellEndIndx && idx < m_uCellsCount; ++idx)
{
if( m_sIndices.find(idx) != m_sIndices.end() )
{
continue;
}
updateCellAtIndex(idx, row);
}
}
}