void CGUIBaseContainer::UpdateListProvider(bool forceRefresh /* = false */)
{
if (m_listProvider)
{
if (m_listProvider->Update(forceRefresh))
{
// save the current item
int currentItem = GetSelectedItem();
CGUIListItem *current = (currentItem >= 0 && currentItem < (int)m_items.size()) ? m_items[currentItem].get() : NULL;
const std::string prevSelectedPath((current && current->IsFileItem()) ? static_cast<CFileItem *>(current)->GetPath() : "");
Reset();
m_listProvider->Fetch(m_items);
SetPageControlRange();
// update the newly selected item
bool found = false;
// first, try to re-identify selected item by comparing item pointers, though it is not guaranteed that item instances got not recreated on update.
for (int i = 0; i < (int)m_items.size(); i++)
{
if (m_items[i].get() == current)
{
found = true;
if (i != currentItem)
{
SelectItem(i);
break;
}
}
}
if (!found && !prevSelectedPath.empty())
{
// as fallback, try to re-identify selected item by comparing item paths.
for (int i = 0; i < static_cast<int>(m_items.size()); i++)
{
const CGUIListItemPtr c(m_items[i]);
if (c->IsFileItem())
{
const std::string &selectedPath = static_cast<CFileItem *>(c.get())->GetPath();
if (selectedPath == prevSelectedPath)
{
found = true;
if (i != currentItem)
{
SelectItem(i);
break;
}
}
}
}
}
if (!found && currentItem >= (int)m_items.size())
SelectItem(m_items.size()-1);
SetInvalid();
}
// always update the scroll by letter, as the list provider may have altered labels
// while not actually changing the list items.
UpdateScrollByLetter();
}
}
void CGUIBaseContainer::UpdateListProvider(bool forceRefresh /* = false */)
{
if (m_listProvider)
{
if (m_listProvider->Update(forceRefresh))
{
// save the current item
int currentItem = GetSelectedItem();
CGUIListItem *current = (currentItem >= 0 && currentItem < (int)m_items.size()) ? m_items[currentItem].get() : NULL;
Reset();
m_listProvider->Fetch(m_items);
SetPageControlRange();
// update the newly selected item
bool found = false;
for (int i = 0; i < (int)m_items.size(); i++)
{
if (m_items[i].get() == current)
{
found = true;
if (i != currentItem)
{
SelectItem(i);
break;
}
}
}
if (!found && currentItem >= (int)m_items.size())
SelectItem(m_items.size()-1);
SetInvalid();
}
// always update the scroll by letter, as the list provider may have altered labels
// while not actually changing the list items.
UpdateScrollByLetter();
}
}
void CGUIBaseContainer::UpdateLayout(bool updateAllItems)
{
if (updateAllItems)
{ // free memory of items
for (iItems it = m_items.begin(); it != m_items.end(); ++it)
(*it)->FreeMemory();
}
// and recalculate the layout
CalculateLayout();
SetPageControlRange();
MarkDirtyRegion();
}
bool CGUIBaseContainer::OnMessage(CGUIMessage& message)
{
if (message.GetControlId() == GetID() )
{
if (!m_listProvider)
{
if (message.GetMessage() == GUI_MSG_LABEL_BIND && message.GetPointer())
{ // bind our items
Reset();
CFileItemList *items = static_cast<CFileItemList*>(message.GetPointer());
for (int i = 0; i < items->Size(); i++)
m_items.push_back(items->Get(i));
UpdateLayout(true); // true to refresh all items
UpdateScrollByLetter();
SelectItem(message.GetParam1());
return true;
}
else if (message.GetMessage() == GUI_MSG_LABEL_RESET)
{
Reset();
SetPageControlRange();
return true;
}
}
if (message.GetMessage() == GUI_MSG_ITEM_SELECT)
{
SelectItem(message.GetParam1());
return true;
}
else if (message.GetMessage() == GUI_MSG_SETFOCUS)
{
if (message.GetParam1()) // subfocus item is specified, so set the offset appropriately
{
int offset = GetOffset();
if (message.GetParam2() && message.GetParam2() == 1)
offset = 0;
int item = std::min(offset + (int)message.GetParam1() - 1, (int)m_items.size() - 1);
SelectItem(item);
}
}
else if (message.GetMessage() == GUI_MSG_ITEM_SELECTED)
{
message.SetParam1(GetSelectedItem());
return true;
}
else if (message.GetMessage() == GUI_MSG_PAGE_CHANGE)
{
if (message.GetSenderId() == m_pageControl && IsVisible())
{ // update our page if we're visible - not much point otherwise
if ((int)message.GetParam1() != GetOffset())
m_pageChangeTimer.StartZero();
ScrollToOffset(message.GetParam1());
return true;
}
}
else if (message.GetMessage() == GUI_MSG_REFRESH_LIST)
{ // update our list contents
for (unsigned int i = 0; i < m_items.size(); ++i)
m_items[i]->SetInvalid();
}
else if (message.GetMessage() == GUI_MSG_MOVE_OFFSET)
{
int count = (int)message.GetParam1();
while (count < 0)
{
MoveUp(true);
count++;
}
while (count > 0)
{
MoveDown(true);
count--;
}
return true;
}
}
return CGUIControl::OnMessage(message);
}
