more changes to nsIMsgFolder for functions we need to have once the real

nsIMsgFolder arrives

mailnews/base/public/nsIMsgFolder.h

@@ -36,6 +36,27 @@ class nsIMsgFolder : public nsISupports {
 
   /*  <IDL>  */
   NS_IMETHOD FindParentOf(const nsIMsgFolder *childFolder, nsIMsgFolder **_retval) = 0;
+
+  /*  <IDL>  */
+  NS_IMETHOD AddSubfolder(const nsIMsgFolder *newSubfolder) = 0;
+
+  /*  <IDL>  */
+  NS_IMETHOD AddSubfolderIfUnique(const nsIMsgFolder *newSubfolder) = 0;
+
+  /*  <IDL>  */
+  NS_IMETHOD RemoveSubfolder(const nsIMsgFolder *folder) = 0;
+
+  /*  <IDL>  */
+  NS_IMETHOD ReplaceSubfolder(const nsIMsgFolder *oldFolder, const nsIMsgFolder *newFolder) = 0;
+
+  /*  <IDL>  */
+  NS_IMETHOD SetFlag(PRInt32 flag) = 0;
+
+  /*  <IDL>  */
+  NS_IMETHOD ClearFlag(PRInt32 flag) = 0;
+
+  /*  <IDL>  */
+  NS_IMETHOD GetFlag(PRInt32 flag, PRBool *_retval) = 0;
 };
 
 #endif /* __gen_nsIMsgFolder_h__ */

mailnews/base/public/nsIMsgFolder.idl

@@ -31,7 +31,16 @@ interface nsIMsgFolder : nsISupports {
   attribute long depth;
   nsISupportsArray GetSubFolders();
   nsIMsgFolder FindParentOf(in nsIMsgFolder childFolder);
-
+  
+  void AddSubfolder(in nsIMsgFolder newSubfolder);
+  void AddSubfolderIfUnique(in nsIMsgFolder newSubfolder);
+  void RemoveSubfolder(in nsIMsgFolder folder);
+  void ReplaceSubfolder(in nsIMsgFolder oldFolder,
+                        in nsIMsgFolder newFolder);
+  
+  void SetFlag(in long flag);
+  void ClearFlag(in long flag);
+  boolean GetFlag(in long flag);
 };