/// <summary>
/// Adjusts the unread count for the specified resource stored in the specified
/// count map by the specified delta value.
/// </summary>
private void AdjustUnreadCount(IResource res, int delta, UnreadState state)
{
if (!state.IsPersistent && !state.IsCounterValid(res))
{
return;
}
int count;
if (state.IsCounterValid(res) || (state.IsPersistent && !_unreadCountProviders.Contains(res.Type)))
{
count = state.GetUnreadCount(res) + delta;
}
else
{
// this will initiate a new count calculation which will already take into account
// the new unread state of the resource
count = state.GetUnreadCount(res);
}
if (count >= 0)
{
state.UpdateUnreadCounter(res, count);
if (state.IsPersistent && !_unreadCountProviders.Contains(res.Type))
{
MarkUnreadCounterChanged(res);
}
}
}
/**
* Returns the persistent unread counter for the specified resource
* (the counter which is not view-specific and which is saved in the
* resource store).
*/
public int GetPersistentUnreadCount(IResource res)
{
if (_defaultUnreadState.IsCounterValid(res))
{
return(_defaultUnreadState.GetUnreadCount(res));
}
int count = res.GetIntProp(_propUnreadCount);
_defaultUnreadState.UpdateUnreadCounter(res, count);
return(count);
}
/**
* Returns the unread count for the specified state.
*/
internal int GetCountForState(UnreadState state, IResource res)
{
if (state.IsCounterValid(res) || (state != _curUnreadState && !state.IsPersistent))
{
return(state.GetCountFromBuffer(res));
}
int count;
IUnreadCountProvider provider = (IUnreadCountProvider)_unreadCountProviders [res.Type];
if (provider == null)
{
count = state.IsPersistent ? res.GetIntProp(_propUnreadCount) :
GetUnreadCountFromLinks(res, state);
}
else
{
count = GetProviderUnreadCount(res, state, provider);
}
state.UpdateUnreadCounter(res, count);
return(count);
}