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#ifndef __nsMsgAppCore_h
#define __nsMsgAppCore_h

#include "nscore.h"
#include "nsIMessenger.h"
#include "nsCOMPtr.h"
#include "nsITransactionManager.h"
#include "nsFileSpec.h"
#include "nsIDocShell.h"
#include "nsIStringBundle.h"
#include "nsILocalFile.h"
#include "nsIObserver.h"
#include "nsWeakReference.h"
#include "nsIDOMWindow.h"

class nsMessenger : public nsIMessenger, public nsIObserver, public nsSupportsWeakReference, public nsIFolderListener
{
  
public:
  nsMessenger();
  virtual ~nsMessenger();

  NS_DECL_ISUPPORTS  
  NS_DECL_NSIMESSENGER
  NS_DECL_NSIOBSERVER
  NS_DECL_NSIFOLDERLISTENER
    
  nsresult Alert(const char * stringName);
  nsresult SaveAttachment(nsIFileSpec *fileSpec, const char* unescapedUrl,
                            const char* messageUri, const char* contentType, 
                            void *closure);
  nsresult PromptIfFileExists(nsFileSpec &fileSpec);
  nsresult DetachAttachments(PRUint32 aCount,
                                  const char ** aContentTypeArray,
                                  const char ** aUrlArray,
                                  const char ** aDisplayNameArray,
                                  const char ** aMessageUriArray,
                                  nsCStringArray *saveFileUris);
  nsresult SaveAllAttachments(PRUint32 count,
                                const char **contentTypeArray,
                                const char **urlArray,
                                const char **displayNameArray,
                                const char **messageUriArray,
                                PRBool detaching);

protected:
  nsresult DoDelete(nsIRDFCompositeDataSource* db, nsISupportsArray *srcArray,
                    nsISupportsArray *deletedArray);
  nsresult DoCommand(nsIRDFCompositeDataSource *db, const nsACString& command,
                     nsISupportsArray *srcArray, nsISupportsArray *arguments);
  const nsAdoptingString GetString(const nsAFlatString& aStringName);
  nsresult InitStringBundle();
  nsresult PromptIfDeleteAttachments(PRBool saveFirst, PRUint32 count, const char **displayNameArray);

  void AddMsgUrlToNavigateHistory(const char *aURL);

private:
  nsresult GetLastSaveDirectory(nsILocalFile **aLastSaveAsDir);
  // if aLocalFile is a dir, we use it.  otherwise, we use the parent of aLocalFile.
  nsresult SetLastSaveDirectory(nsILocalFile *aLocalFile);
  
  nsresult SetDisplayProperties();

  nsString mId;
  void *mScriptObject;
  nsCOMPtr<nsITransactionManager> mTxnMgr;

  /* rhp - need this to drive message display */
  nsCOMPtr<nsIDOMWindow>    mWindow;
  nsCOMPtr<nsIMsgWindow>    mMsgWindow;
  nsCOMPtr<nsIDocShell>     mDocShell;

  // String bundles...
  nsCOMPtr<nsIStringBundle>   mStringBundle;

  nsCString mCurrentDisplayCharset;

  nsCOMPtr<nsISupports>  mSearchContext;
  nsCString   mLastDisplayURI; // this used when the user attempts to force a charset reload of a message...we need to get the last displayed
                               // uri so we can re-display it..
  PRBool  mSendingUnsentMsgs;
  nsCString mNavigatingToUri;
  nsCStringArray mLoadedMsgHistory;
  PRInt32 mCurHistoryPos;
};

#define NS_MESSENGER_CID \
{ /* 3f181950-c14d-11d2-b7f2-00805f05ffa5 */      \
  0x3f181950, 0xc14d, 0x11d2,                     \
    {0xb7, 0xf2, 0x0, 0x80, 0x5f, 0x05, 0xff, 0xa5}}


#endif