RetroZilla/mailnews/base/util/nsMsgTxn.cpp

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#include "nsMsgTxn.h"
#include "nsIMsgHdr.h"

NS_IMPL_ISUPPORTS_INHERITED1(nsMsgTxn, nsHashPropertyBag, nsITransaction)

nsMsgTxn::nsMsgTxn() 
{
  m_txnType = 0;
}

nsMsgTxn::~nsMsgTxn()
{
}

NS_IMETHODIMP nsMsgTxn::DoTransaction(void)
{
  return NS_OK;
}

NS_IMETHODIMP nsMsgTxn::GetIsTransient(PRBool *aIsTransient)
{
  if (nsnull!=aIsTransient)
    *aIsTransient = PR_FALSE;
  else
	  return NS_ERROR_NULL_POINTER;
  return NS_OK;
}

NS_IMETHODIMP nsMsgTxn::Merge(nsITransaction *aTransaction, PRBool *aDidMerge)
{
  return NS_ERROR_NOT_IMPLEMENTED;
}


nsresult nsMsgTxn::GetMsgWindow(nsIMsgWindow **msgWindow)
{
    if (!msgWindow || !m_msgWindow)
        return NS_ERROR_NULL_POINTER;
    *msgWindow = m_msgWindow;
    NS_ADDREF (*msgWindow);
    return NS_OK;
}

nsresult nsMsgTxn::SetMsgWindow(nsIMsgWindow *msgWindow)
{
    m_msgWindow = msgWindow;
    return NS_OK;
}


nsresult
nsMsgTxn::SetTransactionType(PRUint32 txnType)
{
  return SetPropertyAsUint32(NS_LITERAL_STRING("type"), txnType);
}

/*none of the callers pass null aFolder, 
  we always initialize aResult (before we pass in) for the case where the key is not in the db*/
nsresult 
nsMsgTxn::CheckForToggleDelete(nsIMsgFolder *aFolder, const nsMsgKey &aMsgKey, PRBool *aResult)
{
  NS_ENSURE_ARG(aResult);
  nsCOMPtr<nsIMsgDBHdr> message;
  nsCOMPtr<nsIMsgDatabase> db;
  nsresult rv = aFolder->GetMsgDatabase(nsnull,getter_AddRefs(db));
  if (db)
  {
    PRBool containsKey;
    rv = db->ContainsKey(aMsgKey, &containsKey);
    if (NS_FAILED(rv) || !containsKey)   // the message has been deleted from db, so we cannot do toggle here
      return NS_OK;
    rv = db->GetMsgHdrForKey(aMsgKey, getter_AddRefs(message));
    PRUint32 flags;
    if (NS_SUCCEEDED(rv) && message)
    {
      message->GetFlags(&flags);
      *aResult = (flags & MSG_FLAG_IMAP_DELETED) != 0;
    }
  }
  return rv;
}