/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 * The contents of this file are subject to the Netscape Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/NPL/
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * The Original Code is Mozilla Communicator client code, released
 * March 31, 1998.
 *
 * The Initial Developer of the Original Code is Netscape
 * Communications Corporation. Portions created by Netscape are
 * Copyright (C) 1998-1999 Netscape Communications Corporation. All
 * Rights Reserved.
 *
 * Contributors: timeless
 *               slucy@objectivesw.co.uk
 *               Håkan Waara <hwaara@chello.se>
 *               Jan Varga <varga@utcru.sk>
 *               Seth Spitzer <sspitzer@netscape.com>
 *               David Bienvenu <bienvenu@netscape.com>
 */

var gMessengerBundle;
var gPromptService;
var gOfflinePromptsBundle;
var nsPrefBranch = null;
var gOfflineManager;
var gWindowManagerInterface;
var gPrefs = Components.classes["@mozilla.org/preferences-service;1"].getService(Components.interfaces.nsIPrefBranch);
var gPrintSettings = null;
var gWindowReuse  = 0;

var gTimelineService = null;
var gTimelineEnabled = ("@mozilla.org;timeline-service;1" in Components.classes);
if (gTimelineEnabled) {
  try {
    gTimelineEnabled = gPrefs.getBoolPref("mailnews.timeline_is_enabled");
    if (gTimelineEnabled) {
      gTimelineService = 
        Components.classes["@mozilla.org;timeline-service;1"].getService(Components.interfaces.nsITimelineService);
    }
  }
  catch (ex)
  {
    gTimelineEnabled = false;
  }
}

var disallow_classes_no_html = 1; /* the user preference,
     if HTML is not allowed. I assume, that the user could have set this to a
     value > 1 in his prefs.js or user.js, but that the value will not
     change during runtime other than through the MsgBody*() functions below.*/

// Disable the new account menu item if the account preference is locked.
// Two other affected areas are the account central and the account manager
// dialog.
function menu_new_init()
{
  if (!gMessengerBundle)
    gMessengerBundle = document.getElementById("bundle_messenger");

  if (!nsPrefBranch) {
    var prefService = Components.classes["@mozilla.org/preferences-service;1"];
    prefService = prefService.getService();
    prefService = prefService.QueryInterface(Components.interfaces.nsIPrefService);
    nsPrefBranch = prefService.getBranch(null);
  }
  var newAccountItem = document.getElementById('newAccountMenuItem');
  if (nsPrefBranch.prefIsLocked("mail.disable_new_account_addition"))
    newAccountItem.setAttribute("disabled","true");

  // Change "New Folder..." menu according to the context
  var folderArray = GetSelectedMsgFolders();
  if (folderArray.length == 0)
    return;
  var msgFolder = folderArray[0];
  var isServer = msgFolder.isServer;
  var serverType = msgFolder.server.type;
  var canCreateNew = msgFolder.canCreateSubfolders;
  var isInbox = IsSpecialFolder(msgFolder, MSG_FOLDER_FLAG_INBOX);
  var isIMAPFolder = serverType == "imap";
  var ioService = Components.classes["@mozilla.org/network/io-service;1"]
                         .getService(Components.interfaces.nsIIOService);
  var showNew = ((serverType != 'nntp') && canCreateNew) || isInbox;
  ShowMenuItem("menu_newFolder", showNew);
  EnableMenuItem("menu_newFolder", !isIMAPFolder || !ioService.offline);
  if (showNew)
  {
    if (isServer || isInbox)
      SetMenuItemLabel("menu_NewFolder",
        gMessengerBundle.getString("newFolder"));
    else
      SetMenuItemLabel("menu_NewFolder",
        gMessengerBundle.getString("newSubfolder"));
  }
}

function goUpdateMailMenuItems(commandset)
{
//  dump("Updating commands for " + commandset.id + "\n");

  for (var i = 0; i < commandset.childNodes.length; i++)
  {
    var commandID = commandset.childNodes[i].getAttribute("id");
    if (commandID)
    {
      goUpdateCommand(commandID);
    }
  }
}

function file_init()
{
    if (!gMessengerBundle)
        gMessengerBundle = document.getElementById("bundle_messenger");
    file_attachments();
/* file_attachments() can return false to indicate a load failure,
   but if you return false to oncreate then
   the popup menu will not display which is not a good thing.
 */

  document.commandDispatcher.updateCommands('create-menu-file');
}

function file_attachments()
{
  var numAttachments = GetNumberOfAttachmentsForDisplayedMessage();
  var amParent=document.getElementById('fileAttachmentMenu');
  if (!amParent)
    return false;

  // hide the attachment menu item if the message does not have any messages..
  if (numAttachments > 0)
  {
    amParent.removeAttribute('hidden');
  }
  else
    amParent.setAttribute('hidden',true);
  return true;
}

function InitEditMessagesMenu()
{
  document.commandDispatcher.updateCommands('create-menu-edit');
}

function InitGoMessagesMenu()
{
  document.commandDispatcher.updateCommands('create-menu-go');
}

function view_init()
{
  if (!gMessengerBundle)
      gMessengerBundle = document.getElementById("bundle_messenger");
  var message_menuitem=document.getElementById('menu_showMessage');

  if (message_menuitem)
  {
      var message_menuitem_hidden = message_menuitem.getAttribute("hidden");
      if(message_menuitem_hidden != "true"){
          message_menuitem.setAttribute('checked',!IsThreadAndMessagePaneSplitterCollapsed());
      }
  }
  var threadColumn = document.getElementById('ThreadColumnHeader');
  var thread_menuitem=document.getElementById('menu_showThreads');
  if (threadColumn && thread_menuitem){
      thread_menuitem.setAttribute('checked',threadColumn.getAttribute('currentView')=='threaded');
  }

  // Initialize the View Attachment Inline menu
  var viewAttachmentInline = pref.getBoolPref("mail.inline_attachments");
  document.getElementById("viewAttachmentsInlineMenuitem").setAttribute("checked", viewAttachmentInline ? "true" : "false");

  document.commandDispatcher.updateCommands('create-menu-view');
}

function setSortByMenuItemCheckState(id, value)
{
    var menuitem = document.getElementById(id);
    if (menuitem) {
      menuitem.setAttribute("checked", value);
    }
}

function InitViewSortByMenu()
{
    var sortType = gDBView.sortType;

    setSortByMenuItemCheckState("sortByDateMenuitem", (sortType == nsMsgViewSortType.byDate));
    setSortByMenuItemCheckState("sortByFlagMenuitem", (sortType == nsMsgViewSortType.byFlagged));
    setSortByMenuItemCheckState("sortByOrderReceivedMenuitem", (sortType == nsMsgViewSortType.byId));
    setSortByMenuItemCheckState("sortByPriorityMenuitem", (sortType == nsMsgViewSortType.byPriority));
    setSortByMenuItemCheckState("sortBySizeMenuitem", (sortType == nsMsgViewSortType.bySize));
    setSortByMenuItemCheckState("sortByStatusMenuitem", (sortType == nsMsgViewSortType.byStatus));
    setSortByMenuItemCheckState("sortBySubjectMenuitem", (sortType == nsMsgViewSortType.bySubject));
    setSortByMenuItemCheckState("sortByThreadMenuitem", (sortType == nsMsgViewSortType.byThread));
    setSortByMenuItemCheckState("sortByUnreadMenuitem", (sortType == nsMsgViewSortType.byUnread));
    setSortByMenuItemCheckState("sortByLabelMenuitem", (sortType == nsMsgViewSortType.byLabel));
    setSortByMenuItemCheckState("sortByJunkStatusMenuitem", (sortType == nsMsgViewSortType.byJunkStatus));
 
    // the Sender / Recipient menu is dynamic
    setSortByMenuItemCheckState("sortBySenderOrRecipientMenuitem", (sortType == nsMsgViewSortType.byAuthor) || (sortType == nsMsgViewSortType.byRecipient));
    var senderOrRecipientMenuitem = document.getElementById("sortBySenderOrRecipientMenuitem");
    if (senderOrRecipientMenuitem) {
    	var currentFolder = gDBView.msgFolder;
	if (IsSpecialFolder(currentFolder, MSG_FOLDER_FLAG_SENTMAIL | MSG_FOLDER_FLAG_DRAFTS | MSG_FOLDER_FLAG_QUEUE)) {
	  senderOrRecipientMenuitem.setAttribute('label',gMessengerBundle.getString('recipientColumnHeader'));
	  senderOrRecipientMenuitem.setAttribute('accesskey',gMessengerBundle.getString('recipientAccessKey'));
        }
        else {
	  senderOrRecipientMenuitem.setAttribute('label',gMessengerBundle.getString('senderColumnHeader'));
	  senderOrRecipientMenuitem.setAttribute('accesskey',gMessengerBundle.getString('senderAccessKey'));
	}
    }
    var sortOrder = gDBView.sortOrder;

    setSortByMenuItemCheckState("sortAscending", (sortOrder == nsMsgViewSortOrder.ascending));
    setSortByMenuItemCheckState("sortDescending", (sortOrder == nsMsgViewSortOrder.descending));

    var threadMenuItem = document.getElementById("sortByThreadMenuitem");
    threadMenuItem.setAttribute("disabled", !gDBView.supportsThreading);
}

function InitViewMessagesMenu()
{
  var allMenuItem = document.getElementById("viewAllMessagesMenuItem");
  var viewFlags = gDBView.viewFlags;
  var viewType = gDBView.viewType;

  if(allMenuItem)
      allMenuItem.setAttribute("checked",  (viewFlags & nsMsgViewFlagsType.kUnreadOnly) == 0 && (viewType == nsMsgViewType.eShowAllThreads));

  var unreadMenuItem = document.getElementById("viewUnreadMessagesMenuItem");
  if(unreadMenuItem)
      unreadMenuItem.setAttribute("checked", (viewFlags & nsMsgViewFlagsType.kUnreadOnly) != 0);

  var theadedMenuItem = document.getElementById("menu_showThreads");
  if (theadedMenuItem)
    theadedMenuItem.setAttribute("checked", (viewFlags & nsMsgViewFlagsType.kThreadedDisplay) != 0);
  document.commandDispatcher.updateCommands('create-menu-view');

  var theadsWithUnreadMenuItem = document.getElementById("viewThreadsWithUnreadMenuItem");
  if(theadsWithUnreadMenuItem)
      theadsWithUnreadMenuItem.setAttribute("checked", viewType == nsMsgViewType.eShowThreadsWithUnread);

  var watchedTheadsWithUnreadMenuItem = document.getElementById("viewWatchedThreadsWithUnreadMenuItem");
  if(watchedTheadsWithUnreadMenuItem)
      watchedTheadsWithUnreadMenuItem.setAttribute("checked", viewType == nsMsgViewType.eShowWatchedThreadsWithUnread);
  var ignoredTheadsMenuItem = document.getElementById("viewIgnoredThreadsMenuItem");
  if(ignoredTheadsMenuItem)
      ignoredTheadsMenuItem.setAttribute("checked", (viewFlags & nsMsgViewFlagsType.kShowIgnored) != 0);
}

function InitMessageMenu()
{
  var aMessage = GetFirstSelectedMessage();
  var isNews = false;
  if(aMessage) {
      isNews = IsNewsMessage(aMessage);
  }

  //We show reply to Newsgroups only for news messages.
  var replyNewsgroupMenuItem = document.getElementById("replyNewsgroupMainMenu");
  if(replyNewsgroupMenuItem)
  {
      replyNewsgroupMenuItem.setAttribute("hidden", isNews ? "" : "true");
  }

  //For mail messages we say reply. For news we say ReplyToSender.
  var replyMenuItem = document.getElementById("replyMainMenu");
  if(replyMenuItem)
  {
      replyMenuItem.setAttribute("hidden", !isNews ? "" : "true");
  }

  var replySenderMenuItem = document.getElementById("replySenderMainMenu");
  if(replySenderMenuItem)
  {
      replySenderMenuItem.setAttribute("hidden", isNews ? "" : "true");
  }

  // we only kill and watch threads for news
  var threadMenuSeparator = document.getElementById("threadItemsSeparator");
  if (threadMenuSeparator) {
      threadMenuSeparator.setAttribute("hidden", isNews ? "" : "true");
  }
  var killThreadMenuItem = document.getElementById("killThread");
  if (killThreadMenuItem) {
      killThreadMenuItem.setAttribute("hidden", isNews ? "" : "true");
  }
  var watchThreadMenuItem = document.getElementById("watchThread");
  if (watchThreadMenuItem) {
      watchThreadMenuItem.setAttribute("hidden", isNews ? "" : "true");
  }

  // disable the move and copy menus if there are no messages selected.
  // disable the move menu if we can't delete msgs from the folder
  var moveMenu = document.getElementById("moveMenu");
  if(moveMenu)
  {
      var msgFolder = GetLoadedMsgFolder();
      var enableMenuItem = aMessage && msgFolder && msgFolder.canDeleteMessages;
      moveMenu.setAttribute("disabled", !enableMenuItem);
  }

  var copyMenu = document.getElementById("copyMenu");
  if(copyMenu)
      copyMenu.setAttribute("disabled", !aMessage);

  document.commandDispatcher.updateCommands('create-menu-message');
}

function InitViewHeadersMenu()
{
  var id = null;
  var headerchoice = 1;
  try 
  {
    headerchoice = pref.getIntPref("mail.show_headers");
  }
  catch (ex) 
  {
    dump("failed to get the header pref\n");
  }

  switch (headerchoice) 
  {
	case 2:	
		id = "viewallheaders";
		break;
	case 1:	
	default:
		id = "viewnormalheaders";
		break;
  }

  var menuitem = document.getElementById(id);
  if (menuitem)
    menuitem.setAttribute("checked", "true"); 
}

function IsNewsMessage(messageUri)
{
  return (/^news-message:/.test(messageUri));
}

function IsImapMessage(messageUri)
{
  return (/^imap-message:/.test(messageUri));
}

function SetMenuItemLabel(menuItemId, customLabel)
{
    var menuItem = document.getElementById(menuItemId);

    if(menuItem)
        menuItem.setAttribute('label', customLabel);
}

function InitMessageLabel(menuType)
{
    /* this code gets the label strings and changes the menu labels */
    var prefs = Components.classes["@mozilla.org/preferences;1"].getService(Components.interfaces.nsIPref);
    var prefBranch = prefs.getDefaultBranch(null);
    var color;

    try
    {
        var msgFolder = GetLoadedMsgFolder();
        var msgDatabase = msgFolder.getMsgDatabase(msgWindow);
        var numSelected = GetNumSelectedMessages();
        var indices = GetSelectedIndices(gDBView);
        var isChecked = true;
        var checkedLabel;
        var msgKey;

        if (numSelected > 0) {
            msgKey = gDBView.getKeyAt(indices[0]);
            checkedLabel = msgDatabase.GetMsgHdrForKey(msgKey).label;
            if (numSelected > 1) {
                for (var i = 1; i < indices.length; i++)
                {
                    msgKey = gDBView.getKeyAt(indices[i]);
                    if (msgDatabase.GetMsgHdrForKey(msgKey).label == checkedLabel) {
                        continue;
                    }
                    isChecked = false;
                    break;
                }
            }
        }
        else {
            isChecked = false;
        }
    }
    catch(ex)
    {
        isChecked = false;
    }

    for (var label = 0; label <= 5; label++)
    {
        try
        {
            var prefString = prefs.getComplexValue("mailnews.labels.description." + label,
                                                   Components.interfaces.nsIPrefLocalizedString);
            var formattedPrefString = gMessengerBundle.getFormattedString("labelMenuItemFormat" + label,
                                                                          [prefString], 1); 
            var menuItemId = menuType + "-labelMenuItem" + label;
            var menuItem = document.getElementById(menuItemId);

            SetMenuItemLabel(menuItemId, formattedPrefString);
            if (isChecked && label == checkedLabel)
              menuItem.setAttribute("checked", "true");
            else
              menuItem.setAttribute("checked", "false");

            // commented out for now until UE decides on how to show the Labels menu items.
            // This code will color either the text or background for the Labels menu items.
            /*****
            if (label != 0)
            {
                color = prefBranch.getCharPref("mailnews.labels.color." + label);
                // this colors the text of the menuitem only.
                //menuItem.setAttribute("style", ("color: " + color));

                // this colors the background of the menuitem and
                // when selected, text becomes white.
                //menuItem.setAttribute("style", ("color: #FFFFFF"));
                //menuItem.setAttribute("style", ("background-color: " + color));
            }
            ****/
        }
        catch(ex)
        {
        }
    }
    document.commandDispatcher.updateCommands('create-menu-label');
}

function InitMessageMark()
{
  var areMessagesRead = SelectedMessagesAreRead();
  var readItem = document.getElementById("cmd_markAsRead");
  if(readItem)
     readItem.setAttribute("checked", areMessagesRead);

  var areMessagesFlagged = SelectedMessagesAreFlagged();
  var flaggedItem = document.getElementById("cmd_markAsFlagged");
  if(flaggedItem)
     flaggedItem.setAttribute("checked", areMessagesFlagged);

  document.commandDispatcher.updateCommands('create-menu-mark');
}

function UpdateJunkToolbarButton()
{
  try 
  {
    var junkButton = document.getElementById("button-junk");
    if (SelectedMessagesAreJunk())
    {
      junkButton.label = junkButton.getAttribute('notjunk_label');
      junkButton.setAttribute('tooltiptext', junkButton.getAttribute('notjunk_tooltiptext'));
    }
    else
    {
      junkButton.label = junkButton.getAttribute('junk_label');
      junkButton.setAttribute('tooltiptext', junkButton.getAttribute('junk_tooltiptext'));
    }
  } 
  catch(e) {}
}

function UpdateDeleteCommand()
{
  var value = "value";
  var uri = GetFirstSelectedMessage();
  if (IsNewsMessage(uri))
    value += "News";
  else if (SelectedMessagesAreDeleted())
    value += "IMAPDeleted";
  if (GetNumSelectedMessages() < 2)
    value += "Message";
  else
    value += "Messages";
  goSetMenuValue("cmd_delete", value);
  goSetAccessKey("cmd_delete", value + "AccessKey");
}

function SelectedMessagesAreDeleted()
{
    try {
        const MSG_FLAG_IMAP_DELETED = 0x200000;
        return gDBView.hdrForFirstSelectedMessage.flags & MSG_FLAG_IMAP_DELETED;
    }
    catch (ex) {
        return 0;
    }
}

function SelectedMessagesAreJunk()
{
    var isJunk;
    try {
        var junkScore = gDBView.hdrForFirstSelectedMessage.getStringProperty("junkscore");
        isJunk =  ((junkScore != "") && (junkScore != "0"));
    }
    catch (ex) {
        isJunk = false;
    }
    return isJunk;
}

function SelectedMessagesAreRead()
{
    var isRead;
    try {
        isRead = gDBView.hdrForFirstSelectedMessage.isRead;
    }
    catch (ex) {
        isRead = false;
    }
    return isRead;
}

function SelectedMessagesAreFlagged()
{
    var isFlagged;
    try {
        isFlagged = gDBView.hdrForFirstSelectedMessage.isFlagged;
    }
    catch (ex) {
        isFlagged = false;
    }
    return isFlagged;
}

function getMsgToolbarMenu_init()
{
    document.commandDispatcher.updateCommands('create-menu-getMsgToolbar');
}

function GetFirstSelectedMsgFolder()
{
    var result = null;
    var selectedFolders = GetSelectedMsgFolders();
    if (selectedFolders.length > 0) {
        result = selectedFolders[0];
    }

    return result;
}

function GetWindowMediator()
{
    if (gWindowManagerInterface)
        return gWindowManagerInterface;

    var windowManager = Components.classes['@mozilla.org/appshell/window-mediator;1'].getService();
    return (gWindowManagerInterface = windowManager.QueryInterface(Components.interfaces.nsIWindowMediator));
}

function GetInboxFolder(server)
{
    try {
        var rootMsgFolder = server.rootMsgFolder;

        //now find Inbox
        var outNumFolders = new Object();
        var inboxFolder = rootMsgFolder.getFoldersWithFlag(0x1000, 1, outNumFolders);

        return inboxFolder.QueryInterface(Components.interfaces.nsIMsgFolder);
    }
    catch (ex) {
        dump(ex + "\n");
    }
    return null;
}

function GetMessagesForInboxOnServer(server)
{
  var inboxFolder = GetInboxFolder(server);
  if (!inboxFolder) return;

  var folders = new Array(1);
  folders[0] = inboxFolder;

  var compositeDataSource = GetCompositeDataSource("GetNewMessages");
  GetNewMessages(folders, compositeDataSource);
}

function MsgGetMessage()
{
  // if offline, prompt for getting messages
  if(CheckOnline()) {
    GetFolderMessages();
  }
  else {
    var option = PromptGetMessagesOffline();
    if(option == 0) {
      if (!gOfflineManager) 
        GetOfflineMgrService();
      gOfflineManager.goOnline(false /* sendUnsentMessages */, 
                               false /* playbackOfflineImapOperations */, 
                               msgWindow);
      GetFolderMessages();
    }
  }
}

function MsgGetMessagesForAllServers(defaultServer)
{
    // now log into any server
    try
    {
        var allServers = accountManager.allServers;

        for (var i=0;i<allServers.Count();i++)
        {
            var currentServer = allServers.GetElementAt(i).QueryInterface(Components.interfaces.nsIMsgIncomingServer);
            var protocolinfo = Components.classes["@mozilla.org/messenger/protocol/info;1?type=" + currentServer.type].getService(Components.interfaces.nsIMsgProtocolInfo);
            if (protocolinfo.canLoginAtStartUp && currentServer.loginAtStartUp)
            {
                if (defaultServer && defaultServer.equals(currentServer))
                {
                    //dump(currentServer.serverURI + "...skipping, already opened\n");
                }
                else
                {
                    // Check to see if there are new messages on the server
                    currentServer.PerformBiff();
                }
            }
        }
    }
    catch(ex)
    {
        dump(ex + "\n");
    }
}

/**
  * Get messages for all those accounts which have the capability
  * of getting messages and have session password available i.e.,
  * curretnly logged in accounts.
  * if offline, prompt for getting messages.
  */
function MsgGetMessagesForAllAuthenticatedAccounts()
{
  if(CheckOnline()) {
    GetMessagesForAllAuthenticatedAccounts();
  }
  else {
    var option = PromptGetMessagesOffline();
    if(option == 0) {
      if (!gOfflineManager) 
        GetOfflineMgrService();
      gOfflineManager.goOnline(false /* sendUnsentMessages */, 
                               false /* playbackOfflineImapOperations */, 
                               msgWindow);
      GetMessagesForAllAuthenticatedAccounts();
    }
  }
}

/**
  * Get messages for the account selected from Menu dropdowns.
  * if offline, prompt for getting messages.
  */
function MsgGetMessagesForAccount(aEvent)
{
  if (!aEvent)
    return;

  if(CheckOnline()) {
    GetMessagesForAccount(aEvent);
  }
  else {
    var option = PromptGetMessagesOffline();
    if(option == 0) {
      if (!gOfflineManager) 
        GetOfflineMgrService();
      gOfflineManager.goOnline(false /* sendUnsentMessages */, 
                               false /* playbackOfflineImapOperations */, 
                               msgWindow);
      GetMessagesForAccount(aEvent);
    }
  }
}

// if offline, prompt for getNextNMessages
function MsgGetNextNMessages()
{
  var folder;
  
  if(CheckOnline()) {
    folder = GetFirstSelectedMsgFolder();
    if(folder) 
      GetNextNMessages(folder);
  }
  else {
    var option = PromptGetMessagesOffline();
    if(option == 0) {
      if (!gOfflineManager) 
        GetOfflineMgrService();
      gOfflineManager.goOnline(false /* sendUnsentMessages */, 
                               false /* playbackOfflineImapOperations */, 
                               msgWindow);
      folder = GetFirstSelectedMsgFolder();
      if(folder) {
        GetNextNMessages(folder);
      }
    }
  }   
}

function MsgDeleteMessage(reallyDelete, fromToolbar)
{
    // if from the toolbar, return right away if this is a news message
    // only allow cancel from the menu:  "Edit | Cancel / Delete Message"
    if (fromToolbar)
    {
        var srcFolder = GetLoadedMsgFolder();
        var folderResource = srcFolder.QueryInterface(Components.interfaces.nsIRDFResource);
        var uri = folderResource.Value;
        if (isNewsURI(uri)) {
            // if news, don't delete
            return;
        }
    }

    SetNextMessageAfterDelete();
    if (reallyDelete) {
        gDBView.doCommand(nsMsgViewCommandType.deleteNoTrash);
    }
    else {
        gDBView.doCommand(nsMsgViewCommandType.deleteMsg);
    }
}

function MsgCopyMessage(destFolder)
{
  try {
    // get the msg folder we're copying messages into
    var destUri = destFolder.getAttribute('id');
    var destResource = RDF.GetResource(destUri);
    var destMsgFolder = destResource.QueryInterface(Components.interfaces.nsIMsgFolder);
    gDBView.doCommandWithFolder(nsMsgViewCommandType.copyMessages, destMsgFolder);
  }
  catch (ex) {
    dump("MsgCopyMessage failed: " + ex + "\n");
  }
}

function MsgMoveMessage(destFolder)
{
  try {
    // get the msg folder we're moving messages into
    var destUri = destFolder.getAttribute('id');
    var destResource = RDF.GetResource(destUri);
    var destMsgFolder = destResource.QueryInterface(Components.interfaces.nsIMsgFolder);
    // we don't move news messages, we copy them
    if (isNewsURI(gDBView.msgFolder.URI)) {
      gDBView.doCommandWithFolder(nsMsgViewCommandType.copyMessages, destMsgFolder);
    }
    else {
      SetNextMessageAfterDelete();
      gDBView.doCommandWithFolder(nsMsgViewCommandType.moveMessages, destMsgFolder);
    }
  }
  catch (ex) {
    dump("MsgMoveMessage failed: " + ex + "\n");
  }
}

function MsgNewMessage(event)
{
  var loadedFolder = GetFirstSelectedMsgFolder();
  var messageArray = GetSelectedMessages();

  if (event && event.shiftKey)
    ComposeMessage(msgComposeType.New, msgComposeFormat.OppositeOfDefault, loadedFolder, messageArray);
  else
    ComposeMessage(msgComposeType.New, msgComposeFormat.Default, loadedFolder, messageArray);
}

function MsgReplyMessage(event)
{
  var loadedFolder = GetLoadedMsgFolder();
  var server = loadedFolder.server;

  if(server && server.type == "nntp")
    MsgReplyGroup(event);
  else
    MsgReplySender(event);
}

function MsgReplySender(event)
{
  var loadedFolder = GetLoadedMsgFolder();
  var messageArray = GetSelectedMessages();

  if (event && event.shiftKey)
    ComposeMessage(msgComposeType.ReplyToSender, msgComposeFormat.OppositeOfDefault, loadedFolder, messageArray);
  else
    ComposeMessage(msgComposeType.ReplyToSender, msgComposeFormat.Default, loadedFolder, messageArray);
}

function MsgReplyGroup(event)
{
  var loadedFolder = GetLoadedMsgFolder();
  var messageArray = GetSelectedMessages();

  if (event && event.shiftKey)
    ComposeMessage(msgComposeType.ReplyToGroup, msgComposeFormat.OppositeOfDefault, loadedFolder, messageArray);
  else
    ComposeMessage(msgComposeType.ReplyToGroup, msgComposeFormat.Default, loadedFolder, messageArray);
}

function MsgReplyToAllMessage(event)
{
  var loadedFolder = GetLoadedMsgFolder();
  var messageArray = GetSelectedMessages();

  if (event && event.shiftKey)
    ComposeMessage(msgComposeType.ReplyAll, msgComposeFormat.OppositeOfDefault, loadedFolder, messageArray);
  else
    ComposeMessage(msgComposeType.ReplyAll, msgComposeFormat.Default, loadedFolder, messageArray);
}

function MsgForwardMessage(event)
{
  var forwardType = 0;
  try {
    forwardType = gPrefs.getIntPref("mail.forward_message_mode");
  }
  catch (ex) {
    dump("failed to retrieve pref mail.forward_message_mode");
  }

  // mail.forward_message_mode could be 1, if the user migrated from 4.x
  // 1 (forward as quoted) is obsolete, so we treat is as forward inline
  // since that is more like forward as quoted then forward as attachment
  if (forwardType == 0)
      MsgForwardAsAttachment(event);
  else
      MsgForwardAsInline(event);
}

function MsgForwardAsAttachment(event)
{
  var loadedFolder = GetLoadedMsgFolder();
  var messageArray = GetSelectedMessages();

  //dump("\nMsgForwardAsAttachment from XUL\n");
  if (event && event.shiftKey)
    ComposeMessage(msgComposeType.ForwardAsAttachment,
                   msgComposeFormat.OppositeOfDefault, loadedFolder, messageArray);
  else
    ComposeMessage(msgComposeType.ForwardAsAttachment, msgComposeFormat.Default, loadedFolder, messageArray);
}

function MsgForwardAsInline(event)
{
  var loadedFolder = GetLoadedMsgFolder();
  var messageArray = GetSelectedMessages();

  //dump("\nMsgForwardAsInline from XUL\n");
  if (event && event.shiftKey)
    ComposeMessage(msgComposeType.ForwardInline,
                   msgComposeFormat.OppositeOfDefault, loadedFolder, messageArray);
  else
    ComposeMessage(msgComposeType.ForwardInline, msgComposeFormat.Default, loadedFolder, messageArray);
}


function MsgEditMessageAsNew()
{
    var loadedFolder = GetLoadedMsgFolder();
    var messageArray = GetSelectedMessages();
    ComposeMessage(msgComposeType.Template, msgComposeFormat.Default, loadedFolder, messageArray);
}

function MsgCreateFilter()
{
  var emailAddressNode;

  if (gCollapsedHeaderViewMode)
    emailAddressNode = document.getElementById("collapsedfromValue");
  else
    emailAddressNode = document.getElementById("expandedfromBox").emailAddressNode;
  
  if (emailAddressNode)
  {
     var emailAddress = emailAddressNode.getTextAttribute("emailAddress");
     if (emailAddress){
         top.MsgFilters(emailAddress);
     }
  }
}

function MsgHome(url)
{
  window.open(url, "_blank", "chrome,dependent=yes,all");
}

function MsgNewFolder(callBackFunctionName)
{
    var preselectedFolder = GetFirstSelectedMsgFolder();
    var dualUseFolders = true;
    var server = null;
    var destinationFolder = null;

    if (preselectedFolder)
    {
        try {
            server = preselectedFolder.server;
            if (server)
            {
                destinationFolder = getDestinationFolder(preselectedFolder, server);

                var imapServer =
                    server.QueryInterface(Components.interfaces.nsIImapIncomingServer);
                if (imapServer)
                    dualUseFolders = imapServer.dualUseFolders;
            }
        } catch (e) {
            dump ("Exception: dualUseFolders = true\n");
        }
    }
    CreateNewSubfolder("chrome://messenger/content/newFolderDialog.xul", destinationFolder, dualUseFolders, callBackFunctionName);
}

function getDestinationFolder(preselectedFolder, server)
{
    var destinationFolder = null;

    var isCreateSubfolders = preselectedFolder.canCreateSubfolders;
    if (!isCreateSubfolders)
    {
        destinationFolder = server.rootMsgFolder;

        var verifyCreateSubfolders = null;
        if (destinationFolder)
            verifyCreateSubfolders = destinationFolder.canCreateSubfolders;

        // in case the server cannot have subfolders,
        // get default account and set its incoming server as parent folder
        if (!verifyCreateSubfolders)
        {
            try {
                var defaultFolder = GetDefaultAccountRootFolder();
                var checkCreateSubfolders = null;
                if (defaultFolder)
                    checkCreateSubfolders = defaultFolder.canCreateSubfolders;

                if (checkCreateSubfolders)
                    destinationFolder = defaultFolder;

            } catch (e) {
                dump ("Exception: defaultAccount Not Available\n");
            }
        }
    }
    else
        destinationFolder = preselectedFolder;

    return destinationFolder;
}

function MsgSubscribe()
{
    var preselectedFolder = GetFirstSelectedMsgFolder();
    Subscribe(preselectedFolder);
}

function ConfirmUnsubscribe(folder)
{
    if (!gMessengerBundle)
        gMessengerBundle = document.getElementById("bundle_messenger");

    var titleMsg = gMessengerBundle.getString("confirmUnsubscribeTitle");
    var dialogMsg = gMessengerBundle.getFormattedString("confirmUnsubscribeText",
                                        [folder.name], 1);

    var promptService = Components.classes["@mozilla.org/embedcomp/prompt-service;1"].getService(Components.interfaces.nsIPromptService);
    return promptService.confirm(window, titleMsg, dialogMsg);
}

function MsgUnsubscribe()
{
    var folder = GetFirstSelectedMsgFolder();
    if (ConfirmUnsubscribe(folder)) {
        UnSubscribe(folder);
    }
}

function MsgSaveAsFile()
{
    if (GetNumSelectedMessages() == 1) {
        SaveAsFile(GetFirstSelectedMessage());
    }
}


function MsgSaveAsTemplate()
{
    var folder = GetLoadedMsgFolder();
    if (GetNumSelectedMessages() == 1) {
        SaveAsTemplate(GetFirstSelectedMessage(), folder);
    }
}

function MsgOpenNewWindowForMsgHdr(hdr)
{
  MsgOpenNewWindowForFolder(hdr.folder.URI, hdr.messageKey);
}

function MsgOpenNewWindowForFolder(uri, key)
{
  var uriToOpen = uri;
  var keyToSelect = key;

  if (!uriToOpen)
    // use GetSelectedFolderURI() to find out which message to open instead of
    // GetLoadedMsgFolder().QueryIntervace(Components.interfaces.nsIRDFResource).value.
    // This is required because on a right-click, the currentIndex value will be
    // different from the actual row that is highlighted.  GetSelectedFolderURI()
    // will return the message that is highlighted.
    uriToOpen = GetSelectedFolderURI();

  if (uriToOpen) {
   // get the messenger window open service and ask it to open a new window for us
   var mailWindowService = Components.classes["@mozilla.org/messenger/windowservice;1"].getService(Components.interfaces.nsIMessengerWindowService);
   if (mailWindowService)
     mailWindowService.openMessengerWindowWithUri("mail:3pane", uriToOpen, keyToSelect);
  }
}

// passing in the view, so this will work for search and the thread pane
function MsgOpenSelectedMessages()
{
  var dbView = GetDBView();

  var indices = GetSelectedIndices(dbView);
  var numMessages = indices.length;

  gWindowReuse = gPrefs.getBoolPref("mailnews.reuse_message_window");
  // This is a radio type button pref, currently with only 2 buttons.
  // We need to keep the pref type as 'bool' for backwards compatibility
  // with 4.x migrated prefs.  For future radio button(s), please use another
  // pref (either 'bool' or 'int' type) to describe it.
  //
  // gWindowReuse values: false, true
  //    false: open new standalone message window for each message
  //    true : reuse existing standalone message window for each message
  if ((gWindowReuse) && (numMessages == 1)) {
      if (!MsgOpenExistingWindowForMessage(dbView.getURIForViewIndex(indices[0]))) {
          MsgOpenNewWindowForMessage(dbView.getURIForViewIndex(indices[0]),dbView.getFolderForViewIndex(indices[0]).URI);
      }
  } else {
      for (var i = 0; i < numMessages; i++) {
          MsgOpenNewWindowForMessage(dbView.getURIForViewIndex(indices[i]),dbView.getFolderForViewIndex(indices[i]).URI);
      }
  }
}

function MsgOpenExistingWindowForMessage(aMessageUri)
{
    var messageUri;
    var msgHdr = null;
    var windowID = GetWindowByWindowType("mail:messageWindow");

    if (!windowID)
      return false;

    if (!aMessageUri) {
        var currentIndex = gDBView.QueryInterface(Components.interfaces.nsIOutlinerView).outlinerView.selection;
        messageUri = gDBView.getURIForViewIndex(currentIndex);
    }
    else
        messageUri = aMessageUri;

    // be sure to pass in the current view....
    if (!messageUri)
        return false;

    try {
        msgHdr = messenger.messageServiceFromURI(messageUri).messageURIToMsgHdr(messageUri);
        if (!msgHdr)
            return false;

        // even if the folder uri's match, we can't use the existing view
        // (msgHdr.folder.URI == windowID.gCurrentFolderUri)
        // the reason is quick search and mail views.
        // see bug #187673
        //
        // for the sake of simplicity,
        // let's always call CreateView(gDBView)
        // which will clone gDBView
        if ("CreateView" in windowID) {
          // Reset the window's message uri and folder uri vars, and
          // update the command handlers to what's going to be used.
          // This has to be done before the call to CreateView().
          windowID.gCurrentMessageUri = messageUri;
          windowID.gCurrentFolderUri = msgHdr.folder.URI;
          windowID.UpdateMailToolbar('MsgOpenExistingWindowForMessage');
          windowID.CreateView(gDBView);
          windowID.gDBView.loadMessageByMsgKey(msgHdr.messageKey);
        }
        else
          return false;
    }
    catch (ex) {
        dump("reusing existing standalone message window failed: " + ex + "\n");
        return false;
    }

    // bring existing window to front
    windowID.focus();
    return true;
}

function MsgOpenNewWindowForMessage(messageUri, folderUri)
{
    if (!messageUri)
        // use GetFirstSelectedMessage() to find out which message to open
        // instead of gDBView.getURIForViewIndex(currentIndex).  This is
        // required because on a right-click, the currentIndex value will be
        // different from the actual row that is highlighted.
        // GetFirstSelectedMessage() will return the message that is
        // highlighted.
        messageUri = GetFirstSelectedMessage();

    if (!folderUri)
        // use GetSelectedFolderURI() to find out which message to open
        // instead of gDBView.getURIForViewIndex(currentIndex).  This is
        // required because on a right-click, the currentIndex value will be
        // different from the actual row that is highlighted.
        // GetSelectedFolderURI() will return the message that is
        // highlighted.
        folderUri = GetSelectedFolderURI();

    // be sure to pass in the current view....
    if (messageUri && folderUri) {
        window.openDialog( "chrome://messenger/content/messageWindow.xul", "_blank", "all,chrome,dialog=no,status,toolbar", messageUri, folderUri, gDBView );
    }
}

function CloseMailWindow()
{
    //dump("\nClose from XUL\nDo something...\n");
    window.close();
}

function MsgJunk()
{
  JunkSelectedMessages(!SelectedMessagesAreJunk());
}

function MsgMarkMsgAsRead(markRead)
{
    if (!markRead) {
        markRead = !SelectedMessagesAreRead();
    }
    MarkSelectedMessagesRead(markRead);
}

function MsgMarkAsFlagged(markFlagged)
{
    if (!markFlagged) {
        markFlagged = !SelectedMessagesAreFlagged();
    }
    MarkSelectedMessagesFlagged(markFlagged);
}

function MsgMarkAllRead()
{
    var compositeDataSource = GetCompositeDataSource("MarkAllMessagesRead");
    var folder = GetMsgFolderFromUri(GetSelectedFolderURI(), true);

    if(folder)
        MarkAllMessagesRead(compositeDataSource, folder);
}

function MsgDownloadFlagged()
{
  gDBView.doCommand(nsMsgViewCommandType.downloadFlaggedForOffline);
}

function MsgDownloadSelected()
{
  gDBView.doCommand(nsMsgViewCommandType.downloadSelectedForOffline);
}

function MsgMarkThreadAsRead()
{
  gDBView.doCommand(nsMsgViewCommandType.markThreadRead);
}

function MsgViewPageSource()
{
    var messages = GetSelectedMessages();
    ViewPageSource(messages);
}

function MsgFind()
{
  var contentWindow = window.top._content;

  // from utilityOverlay.js
  findInPage(getMessageBrowser(), contentWindow, contentWindow)
}

function MsgFindAgain(reverse)
{
  var contentWindow = window.top._content;
  findAgainInPage(getMessageBrowser(), contentWindow, contentWindow, reverse)
}

function MsgCanFindAgain()
{
  return canFindAgainInPage();
}

function MsgFilters(emailAddress)
{
    var preselectedFolder = GetFirstSelectedMsgFolder();
    var args;
    if (emailAddress)
    {
      /* we have to do prefill filter so we are going to 
         launch the filterEditor dialog
         and prefill that with the emailAddress */
         
      var curFilterList = preselectedFolder.getFilterList(msgWindow);
      args = {filterList: curFilterList};
      args.filterName = emailAddress;
      window.openDialog("chrome://messenger/content/FilterEditor.xul", "", 
                        "chrome, modal, resizable,centerscreen,dialog=yes", args);

      /* if the user hits ok in the filterEditor dialog we set 
         args.refresh=true there
         we check this here in args to show filterList dialog */
      if ("refresh" in args && args.refresh)
      {
         args = { refresh: true, folder: preselectedFolder };
         MsgFilterList(args);
      }
    }
    else  // just launch filterList dialog
    {
      args = { refresh: false, folder: preselectedFolder };
      MsgFilterList(args);
    }
}

function MsgApplyFilters()
{
  var filterService = Components.classes["@mozilla.org/messenger/services/filters;1"].getService(Components.interfaces.nsIMsgFilterService);

  var preselectedFolder = GetFirstSelectedMsgFolder();
  var selectedFolders = Components.classes["@mozilla.org/supports-array;1"].createInstance(Components.interfaces.nsISupportsArray);
  selectedFolders.AppendElement(preselectedFolder);
         
  var curFilterList = preselectedFolder.getFilterList(msgWindow);
  // create a new filter list and copy over the enabled filters to it.
  // We do this instead of having the filter after the fact code ignore
  // disabled filters because the Filter Dialog filter after the fact
  // code would have to clone filters to allow disabled filters to run,
  // and we don't support cloning filters currently.
  var tempFilterList = filterService.getTempFilterList(preselectedFolder);
  var numFilters = curFilterList.filterCount;
  // make sure the temp filter list uses the same log stream
  tempFilterList.logStream = curFilterList.logStream;
  tempFilterList.loggingEnabled = curFilterList.loggingEnabled;
  var newFilterIndex = 0;
  for (var i = 0; i < numFilters; i++)
  {
    var curFilter = curFilterList.getFilterAt(i);
    if (curFilter.enabled)
    {
      tempFilterList.insertFilterAt(newFilterIndex, curFilter);
      newFilterIndex++;
    }
  }
  filterService.applyFiltersToFolders(tempFilterList, selectedFolders, msgWindow);
}

function MsgViewAllHeaders()
{
    gPrefs.setIntPref("mail.show_headers",2);
    MsgReload();
    return true;
}

function MsgViewNormalHeaders()
{
    gPrefs.setIntPref("mail.show_headers",1);
    MsgReload();
    return true;
}

function MsgViewBriefHeaders()
{
    gPrefs.setIntPref("mail.show_headers",0);
    MsgReload();
    return true;
}


function ToggleInlineAttachment(target)
{
    var viewAttachmentInline = !pref.getBoolPref("mail.inline_attachments");
    pref.setBoolPref("mail.inline_attachments", viewAttachmentInline)
    target.setAttribute("checked", viewAttachmentInline ? "true" : "false");
    
    MsgReload();
}

function MsgReload()
{
    ReloadMessage();
}

function MsgStop()
{
    StopUrls();
}

function MsgSendUnsentMsgs()
{
  // if offline, prompt for sendUnsentMessages
  if(CheckOnline()) {
    SendUnsentMessages();    
  }
  else {
    var option = PromptSendMessagesOffline();
    if(option == 0) {
      if (!gOfflineManager) 
        GetOfflineMgrService();
      gOfflineManager.goOnline(false /* sendUnsentMessages */, 
                               false /* playbackOfflineImapOperations */, 
                               msgWindow);
      SendUnsentMessages();
    }
  }
}

function GetPrintSettings()
{
  var prevPS = gPrintSettings;

  try {
    if (gPrintSettings == null) {
      var useGlobalPrintSettings = true;
      var pref = Components.classes["@mozilla.org/preferences-service;1"]
                           .getService(Components.interfaces.nsIPrefBranch);
      if (pref) {
        useGlobalPrintSettings = pref.getBoolPref("print.use_global_printsettings", false);
      }

      // I would rather be using nsIWebBrowserPrint API
      // but I really don't have a document at this point
      var printSettingsService = Components.classes["@mozilla.org/gfx/printsettings-service;1"]
                                           .getService(Components.interfaces.nsIPrintSettingsService);
      if (useGlobalPrintSettings) {
        gPrintSettings = printSettingsService.globalPrintSettings;
      } else {
        gPrintSettings = printSettingsService.CreatePrintSettings();
      }
    }
  } catch (e) {
    dump("GetPrintSettings "+e);
  }

  return gPrintSettings;
}

function PrintEnginePrintInternal(messageList, numMessages, doPrintPreview, msgType)
{
    if (numMessages == 0) {
        dump("PrintEnginePrint(): No messages selected.\n");
        return false;
    }

    if (gPrintSettings == null) {
      gPrintSettings = GetPrintSettings();
    }
    printEngineWindow = window.openDialog("chrome://messenger/content/msgPrintEngine.xul",
                                          "",
                                          "chrome,dialog=no,all,centerscreen",
                                          numMessages, messageList, statusFeedback, gPrintSettings, doPrintPreview, msgType, window);
    return true;

}

function PrintEnginePrint()
{
    var messageList = GetSelectedMessages();
    return PrintEnginePrintInternal(messageList, messageList.length, false, Components.interfaces.nsIMsgPrintEngine.MNAB_PRINT_MSG);
}

function PrintEnginePrintPreview()
{
    var messageList = GetSelectedMessages();
    return PrintEnginePrintInternal(messageList, 1, true, Components.interfaces.nsIMsgPrintEngine.MNAB_PRINTPREVIEW_MSG);
}

function IsMailFolderSelected()
{
    var selectedFolders = GetSelectedMsgFolders();
    var numFolders = selectedFolders.length;
    if(numFolders !=1)
        return false;

    var folder = selectedFolders[0];
    if (!folder)
        return false;

    var server = folder.server;
    var serverType = server.type;

    if((serverType == "nntp"))
        return false;
    else return true;
}

function IsGetNewMessagesEnabled()
{
  // users don't like it when the "Get Msgs" button is disabled
  // so let's never do that. 
  // we'll just handle it as best we can in GetFolderMessages()
  // when they click "Get Msgs" and
  // Local Folders or a news server is selected
  // see bugs #89404 and #111102
  return true;
}

function IsGetNextNMessagesEnabled()
{
    var selectedFolders = GetSelectedMsgFolders();
    var numFolders = selectedFolders.length;
    if(numFolders !=1)
        return false;

    var folder = selectedFolders[0];
    if (!folder)
        return false;

    var server = folder.server;
    var serverType = server.type;

    var menuItem = document.getElementById("menu_getnextnmsg");
    if((serverType == "nntp")) {
        var newsServer = server.QueryInterface(Components.interfaces.nsINntpIncomingServer);
        var menuLabel = gMessengerBundle.getFormattedString("getNextNMessages",
                                                            [ newsServer.maxArticles ]);
        menuItem.setAttribute("label",menuLabel);
        menuItem.removeAttribute("hidden");
        return true;
    }
    else {
        menuItem.setAttribute("hidden","true");
        return false;
    }
}

function IsEmptyTrashEnabled()
{
  var folderURI = GetSelectedFolderURI();
  var server = GetServer(folderURI);
  return (server.canEmptyTrashOnExit?IsMailFolderSelected():false);
}

function IsCompactFolderEnabled()
{
  var folderURI = GetSelectedFolderURI();
  var server = GetServer(folderURI);
  if (!(server.canCompactFoldersOnServer))
    return false;

  var folderTree = GetFolderTree();
  var startIndex = {};
  var endIndex = {};
  folderTree.treeBoxObject.selection.getRangeAt(0, startIndex, endIndex);
  if (startIndex.value < 0)
        return false;

  var folderResource = GetFolderResource(folderTree, startIndex.value);
  if (! folderResource)
        return false;

  return GetFolderAttribute(folderTree, folderResource, "CanCompact") == "true" && isCommandEnabled("cmd_compactFolder");
}

var gDeleteButton = null;
var gMarkButton = null;

function SetUpToolbarButtons(uri)
{
    //dump("SetUpToolbarButtons("+uri+")\n");

    // eventually, we might want to set up the toolbar differently for imap,
    // pop, and news.  for now, just tweak it based on if it is news or not.
    var forNews = isNewsURI(uri);

    if(!gMarkButton) gMarkButton = document.getElementById("button-mark");
    if(!gDeleteButton) gDeleteButton = document.getElementById("button-delete");

    var buttonToHide = null;
    var buttonToShow = null;

    if (forNews) {
        buttonToHide = gDeleteButton;
        buttonToShow = gMarkButton;
    }
    else {
        buttonToHide = gMarkButton;
        buttonToShow = gDeleteButton;
    }

    if (buttonToHide) {
        buttonToHide.setAttribute('hidden',true);
    }
    if (buttonToShow) {
        buttonToShow.removeAttribute('hidden');
    }
}

var gMessageBrowser;

function getMessageBrowser()
{
  if (!gMessageBrowser)
    gMessageBrowser = document.getElementById("messagepane");

  return gMessageBrowser;
}

function getMarkupDocumentViewer()
{
  return getMessageBrowser().markupDocumentViewer;
}

function MsgSynchronizeOffline()
{
    //dump("in MsgSynchronize() \n"); 
    window.openDialog("chrome://messenger/content/msgSynchronize.xul",
          "", "centerscreen,chrome,modal,titlebar,resizable=yes",{msgWindow:msgWindow}); 		     
}


function MsgMarkByDate() {}
function MsgOpenAttachment() {}
function MsgUpdateMsgCount() {}
function MsgImport() {}
function MsgSynchronize() {}
function MsgGetSelectedMsg() {}
function MsgGetFlaggedMsg() {}
function MsgSelectThread() {}
function MsgShowFolders(){}
function MsgShowLocationbar() {}
function MsgViewAttachInline() {}
function MsgWrapLongLines() {}
function MsgIncreaseFont() {}
function MsgDecreaseFont() {}
function MsgShowImages() {}
function MsgRefresh() {}
function MsgViewPageInfo() {}
function MsgFirstUnreadMessage() {}
function MsgFirstFlaggedMessage() {}
function MsgGoBack() {}
function MsgGoForward() {}
function MsgAddSenderToAddressBook() {}
function MsgAddAllToAddressBook() {}

function SpaceHit(event)
{
  var contentWindow = window.top._content;
  var oldScrollY = contentWindow.scrollY;

  var numPages;
  var command;

  if (event && event.shiftKey) {
    numPages = -1;
    command = "cmd_previousUnreadMsg";
  }
  else {
    numPages = 1;
    command = "cmd_nextUnreadMsg";
  }

  contentWindow.scrollByPages(numPages);

  // if at the end (or start) of the message, go to the next one
  if (oldScrollY == contentWindow.scrollY) {
    goDoCommand(command);
  }
}

function IsAccountOfflineEnabled()
{
  var selectedFolders = GetSelectedMsgFolders();

  if (selectedFolders && (selectedFolders.length == 1))
      return selectedFolders[0].supportsOffline;
     
  return false;
}

// init nsIPromptService and strings
function InitPrompts()
{
  if(!gPromptService) {
    gPromptService = Components.classes["@mozilla.org/embedcomp/prompt-service;1"].getService();
    gPromptService = gPromptService.QueryInterface(Components.interfaces.nsIPromptService);
  }
  if (!gOfflinePromptsBundle) 
    gOfflinePromptsBundle = document.getElementById("bundle_offlinePrompts");
}

// prompt for getting messages when offline
function PromptGetMessagesOffline()
{
  var buttonPressed = false;
  InitPrompts();
  if (gPromptService) {
    var checkValue = {value:false};
    buttonPressed = gPromptService.confirmEx(window, 
                            gOfflinePromptsBundle.getString('getMessagesOfflineWindowTitle'), 
                            gOfflinePromptsBundle.getString('getMessagesOfflineLabel'),
                            (gPromptService.BUTTON_TITLE_IS_STRING * gPromptService.BUTTON_POS_0) +
                            (gPromptService.BUTTON_TITLE_CANCEL * gPromptService.BUTTON_POS_1),
                            gOfflinePromptsBundle.getString('getMessagesOfflineGoButtonLabel'),
                            null, null, null, checkValue);
  }
  return buttonPressed;
}

// prompt for sending messages when offline
function PromptSendMessagesOffline()
{
  var buttonPressed = false;
  InitPrompts();
  if (gPromptService) {
    var checkValue= {value:false};
    buttonPressed = gPromptService.confirmEx(window, 
                            gOfflinePromptsBundle.getString('sendMessagesOfflineWindowTitle'), 
                            gOfflinePromptsBundle.getString('sendMessagesOfflineLabel'),
                            (gPromptService.BUTTON_TITLE_IS_STRING * gPromptService.BUTTON_POS_0) +
                            (gPromptService.BUTTON_TITLE_CANCEL * gPromptService.BUTTON_POS_1),
                            gOfflinePromptsBundle.getString('sendMessagesOfflineGoButtonLabel'),
                            null, null, null, checkValue, buttonPressed);
  }
  return buttonPressed;
}

function GetDefaultAccountRootFolder()
{
  try {
    var account = accountManager.defaultAccount;
    var defaultServer = account.incomingServer;
    var defaultFolder = defaultServer.rootMsgFolder;
    return defaultFolder;
  }
  catch (ex) {
  }
  return null;
}

function GetFolderMessages()
{
  var selectedFolders = GetSelectedMsgFolders();
  var defaultAccountRootFolder = GetDefaultAccountRootFolder();
  
  // if no default account, get msg isn't going do anything anyways
  // so bail out
  if (!defaultAccountRootFolder)
    return;

  // if nothing selected, use the default
  var folder = selectedFolders.length ? selectedFolders[0] : defaultAccountRootFolder;

  var serverType = folder.server.type;

  if (folder.isServer && (serverType == "nntp")) {
    // if we're doing "get msgs" on a news server
    // update unread counts on this server
    folder.server.performExpand(msgWindow);
    return;
  }
  else if (serverType == "none") {
    // if "Local Folders" is selected
    // and the user does "Get Msgs"
    // get new mail for the default account
    //
    // XXX TODO
    // should shift click get mail for all (authenticated) accounts?
    // see bug #125885
    folder = defaultAccountRootFolder;
  }

  var folders = new Array(1);
  folders[0] = folder;

  var compositeDataSource = GetCompositeDataSource("GetNewMessages");
  GetNewMessages(folders, compositeDataSource);
}

function SendUnsentMessages()
{
  var msgSendlater = Components.classes["@mozilla.org/messengercompose/sendlater;1"]
               .getService(Components.interfaces.nsIMsgSendLater);
  var identitiesCount, allIdentities, currentIdentity, numMessages, msgFolder;

  if (accountManager) { 
    allIdentities = accountManager.allIdentities;
    identitiesCount = allIdentities.Count();
    for (var i = 0; i < identitiesCount; i++) {
      currentIdentity = allIdentities.QueryElementAt(i, Components.interfaces.nsIMsgIdentity);
      msgFolder = msgSendlater.getUnsentMessagesFolder(currentIdentity);
      if(msgFolder) {
        numMessages = msgFolder.getTotalMessages(false /* include subfolders */);
        if(numMessages > 0) {
          messenger.sendUnsentMessages(currentIdentity, msgWindow);
          // right now, all identities point to the same unsent messages
          // folder, so to avoid sending multiple copies of the
          // unsent messages, we only call messenger.SendUnsentMessages() once
          // see bug #89150 for details
          break;
        }
      }
    } 
  }
}

function GetMessagesForAllAuthenticatedAccounts()
{
   try {
    var allServers = accountManager.allServers;
    for (var i=0;i<allServers.Count();i++) {
      var currentServer = allServers.GetElementAt(i).QueryInterface(Components.interfaces.nsIMsgIncomingServer);
      var protocolinfo = Components.classes["@mozilla.org/messenger/protocol/info;1?type=" +
                           currentServer.type].getService(Components.interfaces.nsIMsgProtocolInfo);
      if (protocolinfo.canGetMessages && currentServer.isAuthenticated) {
        // Get new messages now
        GetMessagesForInboxOnServer(currentServer);
      }
    }
  }
  catch(ex) {
    dump(ex + "\n");
  }
}

function GetMessagesForAccount(aEvent)
{
  var uri = aEvent.target.id;
  var server = GetServer(uri);
  GetMessagesForInboxOnServer(server);
  aEvent.preventBubble();
}


function CommandUpdate_UndoRedo()
{
    ShowMenuItem("menu_undo", true);
    EnableMenuItem("menu_undo", SetupUndoRedoCommand("cmd_undo"));
    ShowMenuItem("menu_redo", true);
    EnableMenuItem("menu_redo", SetupUndoRedoCommand("cmd_redo"));
}

function SetupUndoRedoCommand(command)
{
    var loadedFolder = GetLoadedMsgFolder();

    // if we have selected a server, and are viewing account central
    // there is no loaded folder
    if (!loadedFolder)
      return false;

    var server = loadedFolder.server;
    if (!(server.canUndoDeleteOnServer))
      return false;

    var canUndoOrRedo = false;
    var txnType = 0;

    if (command == "cmd_undo")
    {
        canUndoOrRedo = messenger.CanUndo();
        txnType = messenger.GetUndoTransactionType();
    }
    else
    {
        canUndoOrRedo = messenger.CanRedo();
        txnType = messenger.GetRedoTransactionType();
    }

    if (canUndoOrRedo)
    {
        switch (txnType)
        {
        default:
        case 0:
            goSetMenuValue(command, 'valueDefault');
            break;
        case 1:
            goSetMenuValue(command, 'valueDeleteMsg');
            break;
        case 2:
            goSetMenuValue(command, 'valueMoveMsg');
            break;
        case 3:
            goSetMenuValue(command, 'valueCopyMsg');
            break;
        }
    }
    else
    {
        goSetMenuValue(command, 'valueDefault');
    }
    return canUndoOrRedo;
}

function HandleJunkStatusChanged(folder)
{
  if (IsCurrentLoadedFolder(folder)) {
    var messageURI = GetLoadedMessage();
    // if multiple message are selected
    // and we change the junk status
    // we don't want to show the junk bar
    // (since the message pane is blank)
    if (messageURI && (GetNumSelectedMessages() == 1))
      SetUpJunkBar(messenger.messageServiceFromURI(messageURI).messageURIToMsgHdr(messageURI));
    else
      SetUpJunkBar(null);
  }
}

function SetUpJunkBar(aMsgHdr)
{
  // XXX todo
  // should this happen on the start, or at the end?
  // if at the end, we might keep the "this message is junk" up for a while, until a big message is loaded
  // or do we need to wait until here, to make sure the message is fully analyzed
  // what about almost hiding it on the start, and then showing here?

  var isJunk = false;
  
  if (aMsgHdr) {
    var junkScore = aMsgHdr.getStringProperty("junkscore"); 
    isJunk = ((junkScore != "") && (junkScore != "0"));
  }
  
  var junkBar = document.getElementById("junkBar");
  if (isJunk)
    junkBar.removeAttribute("collapsed");
  else
    junkBar.setAttribute("collapsed","true");
 
  goUpdateCommand('button_junk');
}

function OnMsgLoaded(folder, aMessageURI)
{
    var msgHdr = messenger.messageServiceFromURI(aMessageURI).messageURIToMsgHdr(aMessageURI);
    SetUpJunkBar(msgHdr);

    var currentMsgFolder = folder.QueryInterface(Components.interfaces.nsIMsgFolder);
    if (!IsImapMessage(aMessageURI))
      return;

    var imapServer = currentMsgFolder.server.QueryInterface(Components.interfaces.nsIImapIncomingServer);
    var storeReadMailInPFC = imapServer.storeReadMailInPFC;
    if (storeReadMailInPFC)
    {
      var messageID;

      var copyToOfflineFolder = true;

      // look in read mail PFC for msg with same msg id - if we find one,
      // don't put this message in the read mail pfc.
      var outputPFC = imapServer.GetReadMailPFC(true);

      if (msgHdr)
      {
        messageID = msgHdr.messageId;
        if (messageID.length > 0)
        {
          var readMailDB = outputPFC.getMsgDatabase(msgWindow);
          if (readMailDB)
          {
            var hdrInDestDB = readMailDB.getMsgHdrForMessageID(messageID);
            if (hdrInDestDB)
              copyToOfflineFolder = false;
          }
        }
      }
      if (copyToOfflineFolder)
      {
        var messages = Components.classes["@mozilla.org/supports-array;1"].createInstance(Components.interfaces.nsISupportsArray);
        messages.AppendElement(msgHdr);

        res = outputPFC.copyMessages(currentMsgFolder, messages, false /*isMove*/, msgWindow /* nsIMsgWindow */, null /* listener */, false /* isFolder */, false /*allowUndo*/ );
      }
     }
}

function MsgSearchMessages()
{
  var preselectedFolder = null;
  if ("GetFirstSelectedMsgFolder" in window)
    preselectedFolder = GetFirstSelectedMsgFolder();

  var args = { folder: preselectedFolder };
  OpenOrFocusWindow(args, "mailnews:search", "chrome://messenger/content/SearchDialog.xul");
}

function MsgJunkMail()
{
  var preselectedFolder = null;
  if ("GetFirstSelectedMsgFolder" in window)
    preselectedFolder = GetFirstSelectedMsgFolder();

  var args = { folder: preselectedFolder };
  OpenOrFocusWindow(args, "mailnews:junk", "chrome://messenger/content/junkMail.xul");
}

function MsgJunkMailInfo()
{
  var desiredWindow = GetWindowByWindowType("mailnews:junkmailinfo");

  if (desiredWindow)
    desiredWindow.focus();
  else
    window.openDialog("chrome://messenger/content/junkMailInfo.xul", "mailnews:junkmailinfo", "centerscreen,resizeable=no,titlebar,chrome", null);
}

function MsgSearchAddresses()
{
  var args = { directory: null };
  OpenOrFocusWindow(args, "mailnews:absearch", "chrome://messenger/content/ABSearchDialog.xul");
}
 
function MsgFilterList(args)
{
  OpenOrFocusWindow(args, "mailnews:filterlist", "chrome://messenger/content/FilterListDialog.xul");
}

function GetWindowByWindowType(windowType)
{
  var windowManager = Components.classes['@mozilla.org/appshell/window-mediator;1'].getService(Components.interfaces.nsIWindowMediator);
  return windowManager.getMostRecentWindow(windowType);
}

function OpenOrFocusWindow(args, windowType, chromeURL)
{
  var desiredWindow = GetWindowByWindowType(windowType);

  if (desiredWindow) {
    desiredWindow.focus();
    if ("refresh" in args && args.refresh)
      desiredWindow.refresh();
  }
  else
    window.openDialog(chromeURL, "", "chrome,resizable,status,centerscreen,dialog=no", args);
}

function loadThrobberUrl(urlPref)
{
    var url;
    try {
        url = gPrefs.getComplexValue(urlPref, Components.interfaces.nsIPrefLocalizedString).data;
        messenger.loadURL(window, url);  
    } catch (ex) {}
}