RetroZilla/mailnews/news/src/nsNNTPNewsgroupList.h

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 * The Original Code is mozilla.org code.
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 * The Initial Developer of the Original Code is
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 * Portions created by the Initial Developer are Copyright (C) 1998
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 * Contributor(s):
 *   Seth Spitzer <sspitzer@netscape.com>
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/*
 * formerly listngst.h
 * This class should ultimately be part of a news group listing
 * state machine - either by inheritance or delegation.
 * Currently, a folder pane owns one and libnet news group listing
 * related messages get passed to this object.
 */
#ifndef nsNNTPNewsgroupListState_h___
#define nsNNTPNewsgroupListState_h___

#include "nsINNTPNewsgroupList.h"
#include "nsIMsgNewsFolder.h"
#include "nsIMsgDatabase.h"
#include "nsMsgKeySet.h"
#include "nsINntpUrl.h"
#include "nsIMsgFilterList.h"
#include "nsIMsgHdr.h"
#include "nsIMsgWindow.h"

/* The below is all stuff that we remember for netlib about which
   articles we've already seen in the current newsgroup. */

typedef struct MSG_NewsKnown {
  nsMsgKeySet* set; /* Set of articles we've already gotten
                       from the newsserver (if it's marked
                       "read", then we've already gotten it).
                       If an article is marked "read", it
                       doesn't mean we're actually displaying
                       it; it may be an article that no longer
                       exists, or it may be one that we've
                       marked read and we're only viewing
                       unread messages. */

  PRInt32 first_possible; /* The oldest article in this group. */
  PRInt32 last_possible; /* The newest article in this group. */

  PRBool shouldGetOldest;
} MSG_NewsKnown;

// This class should ultimately be part of a news group listing
// state machine - either by inheritance or delegation.
// Currently, a folder pane owns one and libnet news group listing
// related messages get passed to this object.
class nsNNTPNewsgroupList : public nsINNTPNewsgroupList, public nsIMsgFilterHitNotify
#ifdef HAVE_CHANGELISTENER
/* ,public ChangeListener */
#endif
{
public:
  nsNNTPNewsgroupList();
  virtual  ~nsNNTPNewsgroupList();
  NS_DECL_ISUPPORTS
  NS_DECL_NSINNTPNEWSGROUPLIST
  NS_DECL_NSIMSGFILTERHITNOTIFY

private:
  NS_METHOD CleanUp();
     
  PRBool  m_finishingXover;

#ifdef HAVE_CHANGELISTENER
  virtual void OnAnnouncerGoingAway (ChangeAnnouncer *instigator);
#endif
  nsresult ParseLine(char *line, PRUint32 *message_number);
  nsresult GetDatabase(const char *uri, nsIMsgDatabase **db);
  void SetProgressBarPercent(PRInt32 percent);
  void SetProgressStatus(const PRUnichar *message);

protected:
  PRBool m_getOldMessages;
  PRBool m_promptedAlready;
  PRBool m_downloadAll;
  PRInt32 m_maxArticles;
  PRInt32 m_lastPercent;
  PRTime m_lastStatusUpdate;

  nsCOMPtr <nsIMsgNewsFolder> m_newsFolder;
  nsCOMPtr <nsIMsgDatabase> m_newsDB;
  nsCOMPtr <nsINntpUrl> m_runningURL;
  
  nsMsgKey m_lastProcessedNumber;
  nsMsgKey m_firstMsgNumber;
  nsMsgKey m_lastMsgNumber;
  PRInt32 m_firstMsgToDownload;
  PRInt32 m_lastMsgToDownload;
  
  struct MSG_NewsKnown m_knownArts;
  nsMsgKeySet *m_set;

private:
  nsCOMPtr <nsIMsgWindow> m_msgWindow;
  nsCOMPtr <nsIMsgFilterList> m_filterList;
  nsCOMPtr <nsIMsgFilterList> m_serverFilterList;
  nsCOMPtr <nsIMsgDBHdr> m_newMsgHdr; /* current message header we're building */
  PRBool m_addHdrToDB;
};
    
#endif /* nsNNTPNewsgroupListState_h___ */