pjs/mail/base/content/mailCommands.js

# -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
# ***** BEGIN LICENSE BLOCK *****
# Version: MPL 1.1/GPL 2.0/LGPL 2.1
#
# The contents of this file are subject to the Mozilla 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/MPL/
#
# 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 the Initial Developer are Copyright (C) 1998-1999
# the Initial Developer. All Rights Reserved.
#
# Contributor(s):
#
# Alternatively, the contents of this file may be used under the terms of
# either the GNU General Public License Version 2 or later (the "GPL"), or
# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
# in which case the provisions of the GPL or the LGPL are applicable instead
# of those above. If you wish to allow use of your version of this file only
# under the terms of either the GPL or the LGPL, and not to allow others to
# use your version of this file under the terms of the MPL, indicate your
# decision by deleting the provisions above and replace them with the notice
# and other provisions required by the GPL or the LGPL. If you do not delete
# the provisions above, a recipient may use your version of this file under
# the terms of any one of the MPL, the GPL or the LGPL.
#
# ***** END LICENSE BLOCK *****

var gPromptService = Components.classes["@mozilla.org/embedcomp/prompt-service;1"]
                      .getService(Components.interfaces.nsIPromptService);

function DoRDFCommand(dataSource, command, srcArray, argumentArray)
{
  var commandResource = RDF.GetResource(command);
  if (commandResource) {
    try {
      if (!argumentArray)
        argumentArray = Components.classes["@mozilla.org/supports-array;1"]
                        .createInstance(Components.interfaces.nsISupportsArray);

      if (argumentArray)
        argumentArray.AppendElement(msgWindow);
      dataSource.DoCommand(srcArray, commandResource, argumentArray);
    }
    catch(e) {
      if (command == "http://home.netscape.com/NC-rdf#NewFolder") {
        throw(e); // so that the dialog does not automatically close.
      }
      dump("Exception : In mail commands" + e + "\n");
    }
  }
}

function GetNewMessages(selectedFolders, server, compositeDataSource)
{
  var numFolders = selectedFolders.length;
  if (numFolders > 0)
  {
    var msgFolder = selectedFolders[0];

    // Whenever we do get new messages, clear the old new messages.
    if (msgFolder)
    {
      var nsIMsgFolder = Components.interfaces.nsIMsgFolder;
      msgFolder.biffState = nsIMsgFolder.nsMsgBiffState_NoMail;
      msgFolder.clearNewMessages();
    }

    if (compositeDataSource)
    {
      var folderResource = msgFolder.QueryInterface(Components.interfaces.nsIRDFResource);
      var folderArray = Components.classes["@mozilla.org/supports-array;1"].createInstance(Components.interfaces.nsISupportsArray);
      folderArray.AppendElement(folderResource);
      var serverArray = Components.classes["@mozilla.org/supports-array;1"].createInstance(Components.interfaces.nsISupportsArray);
      serverArray.AppendElement(server);
      DoRDFCommand(compositeDataSource, "http://home.netscape.com/NC-rdf#GetNewMessages", folderArray, serverArray);
    }
  }
  else {
    dump("Nothing was selected\n");
  }
}

function getBestIdentity(identities, optionalHint)
{
  var identity = null;

  var identitiesCount = identities.Count();

  try
  {
    // if we have more than one identity and a hint to help us pick one
    if (identitiesCount > 1 && optionalHint) {
      // normalize case on the optional hint to improve our chances of finding a match
      optionalHint = optionalHint.toLowerCase();

      var id;
      // iterate over all of the identities
      var tempID;

      for (id = 0; id < identitiesCount; ++id) {
        tempID = identities.GetElementAt(id).QueryInterface(Components.interfaces.nsIMsgIdentity);
        if (optionalHint.indexOf(tempID.email.toLowerCase()) >= 0) {
          identity = tempID;
          break;
        }
      }

      // if we could not find an exact email address match within the hint fields then maybe the message
      // was to a mailing list. In this scenario, we won't have a match based on email address.
      // Before we just give up, try and search for just a shared domain between the hint and
      // the email addresses for our identities. Hey, it is better than nothing and in the case
      // of multiple matches here, we'll end up picking the first one anyway which is what we would have done
      // if we didn't do this second search. This helps the case for corporate users where mailing lists will have the same domain
      // as one of your multiple identities.

      if (!identity) {
        for (id = 0; id < identitiesCount; ++id) {
          tempID = identities.GetElementAt(id).QueryInterface(Components.interfaces.nsIMsgIdentity);
          // extract out the partial domain
          var start = tempID.email.lastIndexOf("@"); // be sure to include the @ sign in our search to reduce the risk of false positives
          if (optionalHint.search(tempID.email.slice(start).toLowerCase()) >= 0) {
            identity = tempID;
            break;
          }
        }
      }
    }
  }
  catch (ex) {dump (ex + "\n");}

  // Still no matches ?
  // Give up and pick the first one (if it exists), like we used to.
  if (!identity && identitiesCount > 0)
    identity = identities.GetElementAt(0).QueryInterface(Components.interfaces.nsIMsgIdentity);

  return identity;
}

function getIdentityForServer(server, optionalHint)
{
    var identity = null;

    if (server) {
        // Get the identities associated with this server.
        var identities = accountManager.GetIdentitiesForServer(server);
        // dump("identities = " + identities + "\n");
        // Try and find the best one.
        identity = getBestIdentity(identities, optionalHint);
    }

    return identity;
}

function getIdentityForHeader(hdr, type)
{
  // If we treat reply from sent specially, do we check for that folder flag here ?
  var hintForIdentity = (type == msgComposeType.Template) ? hdr.author : hdr.recipients + hdr.ccList;
  var identity = null;
  var server;

  var folder = hdr.folder;
  if (folder)
  {
    server = folder.server;
    identity = folder.customIdentity;
  }

  var accountKey = hdr.accountKey;
  if (accountKey.length > 0)
  {
    var account = accountManager.getAccount(accountKey);
    if (account)
      server = account.incomingServer;
  }

  if (server && !identity) 
    identity = getIdentityForServer(server, hintForIdentity);

  if (!identity)
  {
    var allIdentities = accountManager.allIdentities;
    identity = getBestIdentity(allIdentities, hintForIdentity);
  }
  return identity;
}

function GetNextNMessages(folder)
{
  if (folder) {
    var newsFolder = folder.QueryInterface(Components.interfaces.nsIMsgNewsFolder);
    if (newsFolder) {
      newsFolder.getNextNMessages(msgWindow);
    }
  }
}

// type is a nsIMsgCompType and format is a nsIMsgCompFormat
function ComposeMessage(type, format, folder, messageArray)
{
  var msgComposeType = Components.interfaces.nsIMsgCompType;
  var identity = null;
  var newsgroup = null;
  var server;

  // dump("ComposeMessage folder=" + folder + "\n");
  try
  {
    if (folder)
    {
      // Get the incoming server associated with this uri.
      server = folder.server;

      // If they hit new or reply and they are reading a newsgroup,
      // turn this into a new post or a reply to group.
      if (!folder.isServer && server.type == "nntp" && type == msgComposeType.New)
      {
        type = msgComposeType.NewsPost;
        newsgroup = folder.folderURL;
      }

      identity = folder.customIdentity;
      if (!identity)
        identity = getIdentityForServer(server);
      // dump("identity = " + identity + "\n");
    }
  }
  catch (ex)
  {
    dump("failed to get an identity to pre-select: " + ex + "\n");
  }

  // dump("\nComposeMessage from XUL: " + identity + "\n");
  var uri = null;

  if (!msgComposeService)
  {
    dump("### msgComposeService is invalid\n");
    return;
  }

  if (type == msgComposeType.New)
  {
    // New message.

    // dump("OpenComposeWindow with " + identity + "\n");

    // If the addressbook sidebar panel is open and has focus, get
    // the selected addresses from it.
    if (document.commandDispatcher.focusedWindow.document.documentElement.hasAttribute("selectedaddresses"))
      NewMessageToSelectedAddresses(type, format, identity);
    else
      msgComposeService.OpenComposeWindow(null, null, type, format, identity, msgWindow);
    return;
  }
  else if (type == msgComposeType.NewsPost)
  {
    // dump("OpenComposeWindow with " + identity + " and " + newsgroup + "\n");
    msgComposeService.OpenComposeWindow(null, newsgroup, type, format, identity, msgWindow);
    return;
  }

  messenger.setWindow(window, msgWindow);

  var object = null;

  if (messageArray && messageArray.length > 0)
  {
    uri = "";
    for (var i = 0; i < messageArray.length; ++i)
    {
      var messageUri = messageArray[i];

      var hdr = messenger.msgHdrFromURI(messageUri);
      identity = getIdentityForHeader(hdr, type);
      var messageID = hdr.messageId;
      var messageIDScheme = messageID ? messageID.split(":")[0] : "";
      if (messageIDScheme && (messageIDScheme == 'http' || messageIDScheme == 'https') &&  "openComposeWindowForRSSArticle" in this)
        openComposeWindowForRSSArticle(messageID, hdr, type);
      else if (type == msgComposeType.Reply ||
               type == msgComposeType.ReplyAll ||
               type == msgComposeType.ReplyToList ||
               type == msgComposeType.ForwardInline ||
               type == msgComposeType.ReplyToGroup ||
               type == msgComposeType.ReplyToSender ||
               type == msgComposeType.ReplyToSenderAndGroup ||
               type == msgComposeType.Template ||
               type == msgComposeType.Draft)
      {
        msgComposeService.OpenComposeWindow(null, messageUri, type, format, identity, msgWindow);
        // Limit the number of new compose windows to 8. Why 8 ? I like that number :-)
        if (i == 7)
          break;
      }
      else
      {
        if (i)
          uri += ","
        uri += messageUri;
      }
    }
    if (type == msgComposeType.ForwardAsAttachment && uri)
      msgComposeService.OpenComposeWindow(null, uri, type, format, identity, msgWindow);
  }
  else
    dump("### nodeList is invalid\n");
}

function NewMessageToSelectedAddresses(type, format, identity) {
  var abSidebarPanel = document.commandDispatcher.focusedWindow;
  var abResultsTree = abSidebarPanel.document.getElementById("abResultsTree");
  var abResultsBoxObject = abResultsTree.treeBoxObject;
  var abView = abResultsBoxObject.view;
  abView = abView.QueryInterface(Components.interfaces.nsIAbView);
  var addresses = abView.selectedAddresses;
  var params = Components.classes["@mozilla.org/messengercompose/composeparams;1"].createInstance(Components.interfaces.nsIMsgComposeParams);
  if (params) {
    params.type = type;
    params.format = format;
    params.identity = identity;
    var composeFields = Components.classes["@mozilla.org/messengercompose/composefields;1"].createInstance(Components.interfaces.nsIMsgCompFields);
    if (composeFields) {
      var addressList = "";
      for (var i = 0; i < addresses.Count(); i++) {
        addressList = addressList + (i > 0 ? ",":"") + addresses.QueryElementAt(i,Components.interfaces.nsISupportsString).data;
      }
      composeFields.to = addressList;
      params.composeFields = composeFields;
      msgComposeService.OpenComposeWindowWithParams(null, params);
    }
  }
}

function CreateNewSubfolder(chromeWindowURL, preselectedMsgFolder,
                            dualUseFolders, callBackFunctionName)
{
  var preselectedURI;

  if (preselectedMsgFolder)
  {
    var preselectedFolderResource = preselectedMsgFolder.QueryInterface(Components.interfaces.nsIRDFResource);
    if (preselectedFolderResource)
      preselectedURI = preselectedFolderResource.Value;
    dump("preselectedURI = " + preselectedURI + "\n");
  }

  window.openDialog(chromeWindowURL,
                    "",
                    "chrome,titlebar,modal",
                    {preselectedURI:preselectedURI,
                      dualUseFolders:dualUseFolders,
                      okCallback:callBackFunctionName});
}

function NewFolder(name,uri)
{
  // dump("uri,name = " + uri + "," + name + "\n");
  if (uri && (uri != "") && name && (name != "")) {
    var selectedFolderResource = RDF.GetResource(uri);
    // dump("selectedFolder = " + uri + "\n");
    var compositeDataSource = GetCompositeDataSource("NewFolder");
    var folderArray = Components.classes["@mozilla.org/supports-array;1"].createInstance(Components.interfaces.nsISupportsArray);
    var nameArray = Components.classes["@mozilla.org/supports-array;1"].createInstance(Components.interfaces.nsISupportsArray);

    folderArray.AppendElement(selectedFolderResource);

    var nameLiteral = RDF.GetLiteral(name);
    nameArray.AppendElement(nameLiteral);
    DoRDFCommand(compositeDataSource, "http://home.netscape.com/NC-rdf#NewFolder", folderArray, nameArray);
  }
  else {
    dump("no name or nothing selected\n");
  }
}

function UnSubscribe(folder)
{
  // Unsubscribe the current folder from the newsserver, this assumes any confirmation has already
  // been made by the user  SPL

  var server = folder.server;
  var subscribableServer = server.QueryInterface(Components.interfaces.nsISubscribableServer);
  subscribableServer.unsubscribe(folder.name);
  subscribableServer.commitSubscribeChanges();
}

function Subscribe(preselectedMsgFolder)
{
  var preselectedURI;

  if (preselectedMsgFolder)
  {
    var preselectedFolderResource = preselectedMsgFolder.QueryInterface(Components.interfaces.nsIRDFResource);
    if (preselectedFolderResource)
      preselectedURI = preselectedFolderResource.Value;
    dump("preselectedURI = " + preselectedURI + "\n");
  }

  window.openDialog("chrome://messenger/content/subscribe.xul",
                    "subscribe", "chrome,modal,titlebar,resizable=yes",
                    {preselectedURI:preselectedURI,
                      okCallback:SubscribeOKCallback});
}

function SubscribeOKCallback(changeTable)
{
  for (var serverURI in changeTable) {
    var folder = GetMsgFolderFromUri(serverURI, true);
    var server = folder.server;
    var subscribableServer =
          server.QueryInterface(Components.interfaces.nsISubscribableServer);

    for (var name in changeTable[serverURI]) {
      if (changeTable[serverURI][name] == true) {
        try {
          subscribableServer.subscribe(name);
        }
        catch (ex) {
          dump("failed to subscribe to " + name + ": " + ex + "\n");
        }
      }
      else if (changeTable[serverURI][name] == false) {
        try {
          subscribableServer.unsubscribe(name);
        }
        catch (ex) {
          dump("failed to unsubscribe to " + name + ": " + ex + "\n");
        }
      }
      else {
        // no change
      }
    }

    try {
      subscribableServer.commitSubscribeChanges();
    }
    catch (ex) {
      dump("failed to commit the changes: " + ex + "\n");
    }
  }
}

function SaveAsFile(uri)
{
  if (uri) {
    var filename = null;
    try {
      var subject = messenger.messageServiceFromURI(uri)
                             .messageURIToMsgHdr(uri).mime2DecodedSubject;
      filename = GenerateValidFilename(subject, ".eml");
    }
    catch (ex) {}
    messenger.saveAs(uri, true, null, filename);
  }
}

function SaveAsTemplate(uri, folder)
{
  if (uri) 
  {
    var hdr = messenger.msgHdrFromURI(uri);
    var identity = getIdentityForHeader(hdr, msgComposeType.Template);
    messenger.saveAs(uri, false, identity, null);
  }
}

function MarkSelectedMessagesRead(markRead)
{
  ClearPendingReadTimer();
  gDBView.doCommand(markRead ? nsMsgViewCommandType.markMessagesRead : nsMsgViewCommandType.markMessagesUnread);
}

function MarkSelectedMessagesFlagged(markFlagged)
{
  gDBView.doCommand(markFlagged ? nsMsgViewCommandType.flagMessages : nsMsgViewCommandType.unflagMessages);
}

function MarkAllMessagesRead(compositeDataSource, folder)
{
  var folderResource = folder.QueryInterface(Components.interfaces.nsIRDFResource);
  var folderArray = Components.classes["@mozilla.org/supports-array;1"].createInstance(Components.interfaces.nsISupportsArray);
  folderArray.AppendElement(folderResource);

  DoRDFCommand(compositeDataSource, "http://home.netscape.com/NC-rdf#MarkAllMessagesRead", folderArray, null);
}

function DownloadFlaggedMessages(compositeDataSource, folder)
{
    dump("fix DownloadFlaggedMessages()\n");
}

function DownloadSelectedMessages(compositeDataSource, messages, markFlagged)
{
    dump("fix DownloadSelectedMessages()\n");
}

function ViewPageSource(messages)
{
  var numMessages = messages.length;

  if (numMessages == 0)
  {
    dump("MsgViewPageSource(): No messages selected.\n");
    return false;
  }

  try {
    // First, get the mail session
    const mailSessionContractID = "@mozilla.org/messenger/services/session;1";
    const nsIMsgMailSession = Components.interfaces.nsIMsgMailSession;
    var mailSession = Components.classes[mailSessionContractID].getService(nsIMsgMailSession);
    var mailCharacterSet = "charset=" + msgWindow.mailCharacterSet;

    for (var i = 0; i < numMessages; i++)
    {
      // Now, we need to get a URL from a URI
      var url = mailSession.ConvertMsgURIToMsgURL(messages[i], msgWindow);
      window.openDialog("chrome://global/content/viewSource.xul",
                        "_blank", "all,dialog=no", url,
                        mailCharacterSet);
    }
    return true;
  } catch (e) {
    // Couldn't get mail session
    return false;
  }
}

function doHelpButton()
{
    openHelp("mail-offline-items");
}

// XXX The following junkmail code might be going away or changing

const NS_BAYESIANFILTER_CONTRACTID = "@mozilla.org/messenger/filter-plugin;1?name=bayesianfilter";
const nsIJunkMailPlugin = Components.interfaces.nsIJunkMailPlugin;
const nsIMsgDBHdr = Components.interfaces.nsIMsgDBHdr;

var gJunkmailComponent;

/**
 * Determines the actions that should be carried out on the messages
 * that are being marked as junk
 *
 * @param aFolder
 *        the folder with messages being marked as junk
 *
 * @return an object with two properties: 'markRead' (boolean) indicating
 *         whether the messages should be marked as read, and 'junkTargetFolder'
 *         (nsIMsgFolder) specifying where the messages should be moved, or
 *         null if they should not be moved.
 */
function determineActionsForJunkMsgs(aFolder)
{
  var actions = { markRead: false, junkTargetFolder: null };
  var spamSettings = aFolder.server.spamSettings;

  // note we will do moves/marking as read even if the spam
  // feature is disabled, since the user has asked to use it
  // despite the disabling

  actions.markRead = spamSettings.markAsReadOnSpam;
  actions.junkTargetFolder = null;

  // move only when the corresponding setting is activated
  // and the currently viewed folder is not the junk folder.
  if (spamSettings.moveOnSpam && !(aFolder.flags & MSG_FOLDER_FLAG_JUNK))
  {
    var spamFolderURI = spamSettings.spamFolderURI;
    if (!spamFolderURI)
    {
      // XXX TODO
      // we should use nsIPromptService to inform the user of the problem,
      // e.g. when the junk folder was accidentally deleted.
      dump('determineActionsForJunkMsgs: no spam folder found, not moving.');
    }
    else
      actions.junkTargetFolder = GetMsgFolderFromUri(spamFolderURI);
  }

  return actions;
}

function performActionsOnJunkMsgs(aFolder, aMsgHdrs)
{
  if (!aMsgHdrs.Count())
    return;

  var actionParams = determineActionsForJunkMsgs(aFolder);
  if (actionParams.markRead)
    aFolder.markMessagesRead(aMsgHdrs, true);

  if (actionParams.junkTargetFolder)
  {
    var copyService = Components.classes["@mozilla.org/messenger/messagecopyservice;1"].
                        getService(Components.interfaces.nsIMsgCopyService);
    copyService.CopyMessages(aFolder, aMsgHdrs, actionParams.junkTargetFolder, true /* isMove */, null,
                             msgWindow, true /* allow undo */);
  }
}

function getJunkmailComponent()
{
  if (!gJunkmailComponent)
    gJunkmailComponent = Components.classes[NS_BAYESIANFILTER_CONTRACTID].getService(nsIJunkMailPlugin);
}


/**
 * Helper object for filterFolderForJunk() storing the list of pending messages
 * to process and the indices of messages classified as junk.
 */
 
function messageClassifier(aFolder)
{
  this.mFolder = aFolder;
  this.mJunkMsgHdrs = Components.classes["@mozilla.org/supports-array;1"].
                        createInstance(Components.interfaces.nsISupportsArray);
  this.mMessages = new Array();
  this.mPendingMessageCount = 0;
}

messageClassifier.prototype =
{
  /**
   * Starts the message classification process for a message. If the message
   * sender's address is in the address book specified by aWhiteListDirectory,
   * the message is skipped.
   *
   * @param aMsgHdr
   *        The header of the message to classify.
   * @param aWhiteListDirectory
   *        The addressbook (nsIAbMDBDirectory) to use as a whitelist, or null
   *        if no whitelisting should be done.
   */
  analyzeMessage: function(aMsgHdr, aWhiteListDirectory)
  {
    // if a whitelist addressbook was specified, check if the email address is in it
    if (aWhiteListDirectory)
    {
      var headerParser = Components.classes["@mozilla.org/messenger/headerparser;1"].
                         getService(Components.interfaces.nsIMsgHeaderParser);
      var authorEmailAddress = headerParser.extractHeaderAddressMailboxes(null, aMsgHdr.author);
      if (aWhiteListDirectory.cardForEmailAddress(authorEmailAddress))
        // skip over this message, like we do on incoming mail
        // the difference is it could be marked as junk from previous analysis
        // or from being manually marked by the user.
        return;
    }

    var messageURI = aMsgHdr.folder.generateMessageURI(aMsgHdr.messageKey) + "?fetchCompleteMessage=true";
    this.mMessages[messageURI] = aMsgHdr;
    this.mPendingMessageCount++;

    gJunkmailComponent.classifyMessage(messageURI, msgWindow, this);
  },

  onMessageClassified: function(aClassifiedMsgURI, aClassification)
  {
    // XXX TODO
    // update status bar, or a progress dialog
    // running junk mail controls manually, on a large folder
    // can take a while, and the user doesn't know when we are done.

    // XXX TODO
    // make the cut off 50, like in nsMsgSearchTerm.cpp

    var score = aClassification == nsIJunkMailPlugin.JUNK ? "100" : "0";

    // set these props via the db (instead of the message header
    // directly) so that the nsMsgDBView knows to update the UI
    //
    var msgHdr = this.mMessages[aClassifiedMsgURI];
    var db = msgHdr.folder.getMsgDatabase(msgWindow);
    db.setStringProperty(msgHdr.messageKey, "junkscore", score);
    db.setStringProperty(msgHdr.messageKey, "junkscoreorigin", "plugin");

    if (aClassification == nsIJunkMailPlugin.JUNK)
      this.mJunkMsgHdrs.AppendElement(msgHdr);

    this.mPendingMessageCount--;
    if (this.mPendingMessageCount == 0)
      performActionsOnJunkMsgs(this.mFolder, this.mJunkMsgHdrs);
  }
}

function filterFolderForJunk()
{
  MsgJunkMailInfo(true);
  var view = GetDBView();

  getJunkmailComponent();

  // need to expand all threads, so we analyze everything
  view.doCommand(nsMsgViewCommandType.expandAll);

  var treeView = view.QueryInterface(Components.interfaces.nsITreeView);
  var count = treeView.rowCount;
  if (!count)
    return;

  // retrieve server and its spam settings via the header of an arbitrary message
  var tmpMsgURI = view.getURIForViewIndex(0);
  var tmpMsgHdr = messenger.messageServiceFromURI(tmpMsgURI).messageURIToMsgHdr(tmpMsgURI);
  var spamSettings = tmpMsgHdr.folder.server.spamSettings;

  // if enabled in the spam settings, retrieve whitelist addressbook
  var whiteListDirectory = null;
  if (spamSettings.useWhiteList && spamSettings.whiteListAbURI)
    whiteListDirectory = RDF.GetResource(spamSettings.whiteListAbURI).QueryInterface(Components.interfaces.nsIAbMDBDirectory);

  // create a classifier instance to classify messages in the folder.
  var msgClassifier = new messageClassifier(tmpMsgHdr.folder);

  for (var i = 0; i < count; i++) {
    try
    {
      var msgURI = view.getURIForViewIndex(i);
    }
    catch (ex)
    {
      // blow off errors here - dummy headers will fail
      var msgURI = null;
    }
    if (msgURI)
    {
      var msgHdr = messenger.messageServiceFromURI(msgURI).messageURIToMsgHdr(msgURI);
      msgClassifier.analyzeMessage(msgHdr, whiteListDirectory);
    }
  }
}

function JunkSelectedMessages(setAsJunk)
{
  MsgJunkMailInfo(true);

  // When the user explicitly marks a message as junk, we can mark it as read,
  // too. This is independent of the "markAsReadOnSpam" pref, which applies
  // only to automatically-classified messages.
  // Note that this behaviour should match the one in the back end for marking
  // as junk via clicking the 'junk' column.

  if (setAsJunk && pref.getBoolPref("mailnews.ui.junk.manualMarkAsJunkMarksRead"))
    MarkSelectedMessagesRead(true);

  gDBView.doCommand(setAsJunk ? nsMsgViewCommandType.junk
                              : nsMsgViewCommandType.unjunk);
}

function confirmToProceed(commandName)
{
  const kDontAskAgainPref = "mail."+commandName+".dontAskAgain";
  // default to ask user if the pref is not set
  var dontAskAgain = false;
  try {
    var pref = Components.classes["@mozilla.org/preferences-service;1"]
                        .getService(Components.interfaces.nsIPrefBranch);
    dontAskAgain = pref.getBoolPref(kDontAskAgainPref);
  } catch (ex) {}

  if (!dontAskAgain)
  {
    var checkbox = {value:false};
    var choice = gPromptService.confirmEx(
                   window,
                   gMessengerBundle.getString(commandName+"Title"),
                   gMessengerBundle.getString(commandName+"Message"),
                   gPromptService.STD_YES_NO_BUTTONS,
                   null, null, null,
                   gMessengerBundle.getString(commandName+"DontAsk"),
                   checkbox);
    try {
      if (checkbox.value)
        pref.setBoolPref(kDontAskAgainPref, true);
    } catch (ex) {}

    if (choice != 0)
      return false;
  }
  return true;
}

function deleteAllInFolder(commandName)
{
  var folder = GetMsgFolderFromUri(GetSelectedFolderURI(), true);
  if (!folder)
    return;

  if (!confirmToProceed(commandName))
    return;

  var children = Components.classes["@mozilla.org/supports-array;1"]
                  .createInstance(Components.interfaces.nsISupportsArray);

  // Delete sub-folders.
  var iter = folder.GetSubFolders();
  while (true) {
    try {
      children.AppendElement(iter.currentItem());
      iter.next();
    } catch (ex) {
      break;
    }
  }
  for (var i = 0; i < children.Count(); ++i) {
    folder.propagateDelete(children.GetElementAt(i), true, msgWindow); 
  }
  children.Clear();                                       
  
  // Delete messages.
  iter = folder.getMessages(msgWindow);
  while (iter.hasMoreElements()) {
    children.AppendElement(iter.getNext());
  }
  folder.deleteMessages(children, msgWindow, true, false, null, false); 
  children.Clear();                                       
}

function deleteJunkInFolder()
{
  MsgJunkMailInfo(true);
  var view = GetDBView();

  // need to expand all threads, so we find everything
  view.doCommand(nsMsgViewCommandType.expandAll);

  var treeView = view.QueryInterface(Components.interfaces.nsITreeView);
  var count = treeView.rowCount;
  if (!count)
    return;

  var treeSelection = treeView.selection;

  var clearedSelection = false;

  // select the junk messages
  var messageUri;
  for (var i = 0; i < count; ++i)
  {
    try {
      messageUri = view.getURIForViewIndex(i);
    }
    catch (ex) {continue;} // blow off errors for dummy rows
    var msgHdr = messenger.messageServiceFromURI(messageUri).messageURIToMsgHdr(messageUri);
    var junkScore = msgHdr.getStringProperty("junkscore");
    var isJunk = ((junkScore != "") && (junkScore != "0"));
    // if the message is junk, select it.
    if (isJunk)
    {
      // only do this once
      if (!clearedSelection)
      {
        // clear the current selection
        // since we will be deleting all selected messages
        treeSelection.clearSelection();
        clearedSelection = true;
        treeSelection.selectEventsSuppressed = true;
      }
      treeSelection.rangedSelect(i, i, true /* augment */);
    }
  }

  // if we didn't clear the selection
  // there was no junk, so bail.
  if (!clearedSelection)
    return;

  treeSelection.selectEventsSuppressed = false;
  // delete the selected messages
  //
  // XXX todo
  // Should we try to set next message after delete
  // to the message selected before we did all this, if it was not junk?
  SetNextMessageAfterDelete();
  view.doCommand(nsMsgViewCommandType.deleteMsg);
  treeSelection.clearSelection();
}