/* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsISupports.idl"
#include "nsrootidl.idl"
#include "nsIMsgWindow.idl"
#include "nsIMsgIdentity.idl"

interface nsIMsgDBHdr;
interface mozIDOMWindowProxy;
interface nsITransactionManager;
interface nsIMsgMessageService;
interface nsIFile;
interface nsIUrlListener;

[scriptable, uuid(01b967c8-b289-4e32-ad46-6eb7c89d4106)]
interface nsIMessenger : nsISupports {

    const long eUnknown = 0;
    const long eDeleteMsg = 1;
    const long eMoveMsg = 2;
    const long eCopyMsg = 3;
    const long eMarkAllMsg = 4;

    readonly attribute nsITransactionManager transactionManager;

    void setWindow(in mozIDOMWindowProxy ptr, in nsIMsgWindow msgWindow);

    boolean canUndo();
    boolean canRedo();
    unsigned long getUndoTransactionType();
    unsigned long getRedoTransactionType();
    void undo(in nsIMsgWindow msgWindow);
    void redo(in nsIMsgWindow msgWindow);

    /**
     * Saves a given message to a file or template.
     *
     * @param aURI         The URI of the message to save
     * @param aAsFile      If true, save as file, otherwise save as a template
     * @param aIdentity    When saving as a template, this is used to determine
     *                     the location to save the template to.
     * @param aMsgFilename When saving as a file, the filename to save the
     *                     message as, or the default filename for the file
     *                     picker.
     * @param aBypassFilePicker
     *                     If not specified or false, this function will show
     *                     a file picker when saving as a file. If true, no
     *                     file picker will be shown.
     */
    void saveAs(in AUTF8String aURI, in boolean aAsFile,
                in nsIMsgIdentity aIdentity, in AString aMsgFilename,
                [optional] in boolean aBypassFilePicker);

    /**
     * Save the given messages as files in a folder - the user will be prompted
     * for which folder to use.
     * @param count message count
     * @param filenameArray the filenames to use
     * @param messageUriArray uris of the messages to save
     */
    void saveMessages(in Array<AString> filenameArray,
                      in Array<AUTF8String> messageUriArray);

    nsIMsgDBHdr msgHdrFromURI(in AUTF8String aUri);

    AString formatFileSize(in unsigned long long aPos, [optional] in boolean aUseKB);
};