fix new flag handling, r=putterman

mailnews/db/msgdb/public/nsMsgDatabase.h

@@ -279,7 +279,7 @@ protected:
 	virtual nsresult SetKeyFlag(nsMsgKey key, PRBool set, PRUint32 flag,
 							  nsIDBChangeListener *instigator = NULL);
 	virtual PRBool	SetHdrFlag(nsIMsgDBHdr *, PRBool bSet, MsgFlags flag);
-	virtual PRUint32 GetStatusFlags(nsIMsgDBHdr *msgHdr);
+	virtual PRUint32 GetStatusFlags(nsIMsgDBHdr *msgHdr, PRUint32 origFlags);
 	// helper function which doesn't involve thread object
     NS_IMETHOD MarkHdrReadInDB(nsIMsgDBHdr *msgHdr, PRBool bRead,
                                nsIDBChangeListener *instigator);

mailnews/db/msgdb/public/nsMsgHdr.h

@@ -101,6 +101,7 @@ public:
     nsMsgHdr(nsMsgDatabase *db, nsIMdbRow *dbRow);
     virtual				~nsMsgHdr();
 
+	virtual nsresult	GetRawFlags(PRUint32 *result);
     void				Init();
 	virtual nsresult	InitCachedValues();
 	virtual nsresult	InitFlags();

mailnews/db/msgdb/src/nsMsgDatabase.cpp

@@ -1099,10 +1099,9 @@ nsresult nsMsgDatabase::IsRead(nsMsgKey key, PRBool *pRead)
     return rv;
 }
 
-PRUint32	nsMsgDatabase::GetStatusFlags(nsIMsgDBHdr *msgHdr)
+PRUint32	nsMsgDatabase::GetStatusFlags(nsIMsgDBHdr *msgHdr, PRUint32 origFlags)
 {
-	PRUint32	statusFlags;
+	PRUint32	statusFlags = origFlags;
-    (void)msgHdr->GetFlags(&statusFlags);
 	PRBool	isRead;
 
     nsMsgKey key;
@@ -1114,13 +1113,15 @@ PRUint32	nsMsgDatabase::GetStatusFlags(nsIMsgDBHdr *msgHdr)
 	return statusFlags;
 }
 
-NS_IMETHODIMP nsMsgDatabase::IsHeaderRead(nsIMsgDBHdr *hdr, PRBool *pRead)
+NS_IMETHODIMP nsMsgDatabase::IsHeaderRead(nsIMsgDBHdr *msgHdr, PRBool *pRead)
 {
-	if (!hdr)
+	if (!msgHdr)
 		return NS_MSG_MESSAGE_NOT_FOUND;
 
+    nsMsgHdr* hdr = NS_STATIC_CAST(nsMsgHdr*, msgHdr);          // closed system, cast ok
+	// can't call GetFlags, because it will be recursive.
     PRUint32 flags;
-    (void)hdr->GetFlags(&flags);
+	hdr->GetRawFlags(&flags);
 	*pRead = (flags & MSG_FLAG_READ) != 0;
 	return NS_OK;
 }
@@ -1353,7 +1354,9 @@ nsresult	nsMsgDatabase::SetKeyFlag(nsMsgKey key, PRBool set, PRUint32 flag,
 PRBool nsMsgDatabase::SetHdrFlag(nsIMsgDBHdr *msgHdr, PRBool bSet, MsgFlags flag)
 {
 //	PR_ASSERT(! (flag & kDirty));	// this won't do the right thing so don't.
-	PRUint32 currentStatusFlags = GetStatusFlags(msgHdr);
+	PRUint32 statusFlags;
+    (void)msgHdr->GetFlags(&statusFlags);
+	PRUint32 currentStatusFlags = GetStatusFlags(msgHdr, statusFlags);
 	PRBool flagAlreadySet = (currentStatusFlags & flag) != 0;
 
 	if ((flagAlreadySet && !bSet) || (!flagAlreadySet && bSet))

mailnews/db/msgdb/src/nsMsgHdr.cpp

@@ -166,10 +166,21 @@ NS_IMETHODIMP nsMsgHdr::SetMessageKey(nsMsgKey value)
 	return NS_OK;
 }
 
+nsresult nsMsgHdr::GetRawFlags(PRUint32 *result)
+{
+	if (!(m_initedValues & FLAGS_INITED))
+		InitFlags();
+	*result = m_flags;
+    return NS_OK;
+}
+
 NS_IMETHODIMP nsMsgHdr::GetFlags(PRUint32 *result)
 {
 	if (!(m_initedValues & FLAGS_INITED))
 		InitFlags();
+	if (m_mdb)
+		*result = m_mdb->GetStatusFlags(this, m_flags);
+	else
 		*result = m_flags;
     return NS_OK;
 }