add imap idle support 141369 sr=mscott

mailnews/base/util/nsMsgLineBuffer.cpp

@@ -460,3 +460,9 @@ char * nsMsgLineStreamBuffer::ReadNextLine(nsIInputStream * aInputStream, PRUint
   aPauseForMoreData = PR_TRUE;
   return nsnull; // if we somehow got here. we don't have another line in the buffer yet...need to wait for more data...
 }
+
+PRBool nsMsgLineStreamBuffer::NextLineAvailable()
+{
+  return (m_numBytesInBuffer > 0 && PL_strchr(m_dataBuffer+m_startPos, m_lineToken));
+}
+

mailnews/base/util/nsMsgLineBuffer.h

@@ -113,7 +113,8 @@ public:
   //				 PR_FALSE if you do want to see them.
   // aLineToken -- Specify the line token to look for, by default is LF ('\n') which cover as well CRLF. If
   //            lines are terminated with a CR only, you need to set aLineToken to CR ('\r')
-  nsMsgLineStreamBuffer(PRUint32 aBufferSize, PRBool aAllocateNewLines, PRBool aEatCRLFs = PR_TRUE, char aLineToken = '\n'); // specify the size of the buffer you want the class to use....
+  nsMsgLineStreamBuffer(PRUint32 aBufferSize, PRBool aAllocateNewLines, 
+                        PRBool aEatCRLFs = PR_TRUE, char aLineToken = '\n'); // specify the size of the buffer you want the class to use....
   virtual ~nsMsgLineStreamBuffer();
   
   // Caller must free the line returned using PR_Free
@@ -122,6 +123,7 @@ public:
   // aPauseForMoreData -- There is not enough data in the stream to make a line at this time...
   char * ReadNextLine(nsIInputStream * aInputStream, PRUint32 &anumBytesInLine, PRBool &aPauseForMoreData, nsresult *rv = nsnull);
   nsresult GrowBuffer(PRInt32 desiredSize);
+  PRBool NextLineAvailable();
 protected:
   PRBool m_eatCRLFs;
   PRBool m_allocateNewLines;

mailnews/mailnews.js

@@ -374,7 +374,7 @@ pref("mail.server.default.canFileMessages", true);
 // special enhancements for IMAP servers
 pref("mail.server.default.store_read_mail_in_pfc", false);  
 pref("mail.server.default.store_sent_mail_in_pfc", false);  
-
+pref("mail.server.default.use_idle", true); 
 // for spam
 pref("mail.server.default.spamLevel",100);  // 0 off, 100 on.  not doing bool since we might have real levels one day.
 pref("mail.server.default.moveOnSpam",false);