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#ifndef _nsMsgLocalSearch_H
#define _nsMsgLocalSearch_H

// inherit interface here
#include "nsIMsgSearchAdapter.h"

// inherit base implementation
#include "nsMsgSearchAdapter.h"
#include "nsISimpleEnumerator.h"

class nsIMsgDBHdr;
class nsMsgMailboxParser;
class nsIMsgSearchScopeTerm;
class nsIMsgFolder;
class nsMsgSearchBoolExpression;

class nsMsgSearchOfflineMail : public nsMsgSearchAdapter, public nsIUrlListener
{
public:
	nsMsgSearchOfflineMail (nsIMsgSearchScopeTerm*, nsISupportsArray *);
	virtual ~nsMsgSearchOfflineMail ();

  NS_DECL_ISUPPORTS_INHERITED

  NS_DECL_NSIURLLISTENER

  NS_IMETHOD ValidateTerms ();
  NS_IMETHOD Search (PRBool *aDone);
  NS_IMETHOD Abort ();
  NS_IMETHOD AddResultElement (nsIMsgDBHdr *);

	static nsresult  MatchTermsForFilter(nsIMsgDBHdr * msgToMatch,
                                         nsISupportsArray *termList,
                                         const char *defaultCharset,
                                         nsIMsgSearchScopeTerm *scope, 
                                         nsIMsgDatabase * db, 
                                         const char * headers,
                                         PRUint32 headerSize,
                                         nsMsgSearchBoolExpression ** aExpressionTree,
										 PRBool *pResult);

  static nsresult MatchTermsForSearch(nsIMsgDBHdr * msgTomatch,
                                      nsISupportsArray * termList,
                                      const char *defaultCharset,
                                      nsIMsgSearchScopeTerm *scope,
                                      nsIMsgDatabase *db,
                                      nsMsgSearchBoolExpression ** aExpressionTree,
 PRBool *pResult);

	virtual nsresult OpenSummaryFile ();

     static nsresult ProcessSearchTerm(nsIMsgDBHdr *msgToMatch,
                               nsIMsgSearchTerm * aTerm,
                               const char *defaultCharset,
                               nsIMsgSearchScopeTerm * scope,
                               nsIMsgDatabase * db, 
                               const char * headers,
                               PRUint32 headerSize,
                               PRBool Filtering,
							   PRBool *pResult); 
protected:
	static nsresult MatchTerms(nsIMsgDBHdr *msgToMatch,
                                nsISupportsArray *termList,
                                const char *defaultCharset,
                                nsIMsgSearchScopeTerm *scope, 
                                nsIMsgDatabase * db, 
                                const char * headers,
                                PRUint32 headerSize,
                                PRBool ForFilters,
                                nsMsgSearchBoolExpression ** aExpressionTree,
								PRBool *pResult);

    static nsresult ConstructExpressionTree(nsISupportsArray * termList,
                                      PRUint32 termCount,
                                      PRUint32 &aStartPosInList,
                                      nsMsgSearchBoolExpression ** aExpressionTree);
    
	nsCOMPtr <nsIMsgDatabase> m_db;
	nsCOMPtr<nsISimpleEnumerator> m_listContext;
	void CleanUpScope();
};


class nsMsgSearchOfflineNews : public nsMsgSearchOfflineMail
{
public:
	nsMsgSearchOfflineNews (nsIMsgSearchScopeTerm*, nsISupportsArray *);
	virtual ~nsMsgSearchOfflineNews ();
	NS_IMETHOD ValidateTerms ();

	virtual nsresult OpenSummaryFile ();
};



#endif