pjs/mail/base/content/mail-offline.js

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JavaScript

# -*- Mode: C++; tab-width: 2; 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) 1998-2001
# the Initial Developer. All Rights Reserved.
#
# Contributor(s):
# Scott MacGregor <mscott@mozilla.org>
#
# 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 MailOfflineMgr = {
offlineManager: null,
offlineBundle: null,
init: function()
{
var os = Components.classes["@mozilla.org/observer-service;1"]
.getService(Components.interfaces.nsIObserverService);
os.addObserver(this, "network:offline-status-changed", false);
this.offlineManager = Components.classes["@mozilla.org/messenger/offline-manager;1"]
.getService(Components.interfaces.nsIMsgOfflineManager);
this.offlineBundle = document.getElementById("bundle_offlinePrompts");
// initialize our offline state UI
this.updateOfflineUI(!this.isOnline());
},
uninit: function()
{
var os = Components.classes["@mozilla.org/observer-service;1"]
.getService(Components.interfaces.nsIObserverService);
os.removeObserver(this, "network:offline-status-changed");
},
/**
* @return true if we are online
*/
isOnline: function()
{
var ioService = Components.classes["@mozilla.org/network/io-service;1"]
.getService(Components.interfaces.nsIIOService);
return (!ioService.offline);
},
/**
* Toggles the online / offline state, initiated by the user. Depending on user settings
* we may prompt the user to send unsent messages when going online or to download messages for
* offline use when going offline.
*/
toggleOfflineStatus: function()
{
var ioService = Components.classes["@mozilla.org/network/io-service;1"]
.getService(Components.interfaces.nsIIOService2);
// the offline manager(goOnline and synchronizeForOffline) actually does the dirty work of
// changing the offline state with the networking service.
if (!this.isOnline())
{
var prefSendUnsentMessages = gPrefBranch.getIntPref("offline.send.unsent_messages");
// 0 == Ask, 1 == Always Send, 2 == Never Send
var sendUnsentMessages = (prefSendUnsentMessages == 0 && this.haveUnsentMessages()
&& this.confirmSendUnsentMessages()) || prefSendUnsentMessages == 1;
this.offlineManager.goOnline(sendUnsentMessages, true /* playbackOfflineImapOperations */, msgWindow);
// resume managing offline status now that we are going back online.
ioService.manageOfflineStatus = gPrefBranch.getBoolPref("offline.autoDetect");
}
else // going offline
{
// Stop automatic management of the offline status since the user as decided to go offline.
ioService.manageOfflineStatus = false;
var prefDownloadMessages = gPrefBranch.getIntPref("offline.download.download_messages");
// 0 == Ask, 1 == Always Download, 2 == Never Download
var downloadForOfflineUse = (prefDownloadMessages == 0 && this.confirmDownloadMessagesForOfflineUse())
|| prefDownloadMessages == 1;
this.offlineManager.synchronizeForOffline(downloadForOfflineUse, downloadForOfflineUse, false, true, msgWindow);
}
},
observe: function (aSubject, aTopic, aState)
{
if (aTopic == "network:offline-status-changed")
this.mailOfflineStateChanged(aState == "offline");
},
/**
* @return true if there are unsent messages
*/
haveUnsentMessages: function()
{
try
{
var am = Components.classes["@mozilla.org/messenger/account-manager;1"]
.getService(Components.interfaces.nsIMsgAccountManager);
var msgSendlater = Components.classes["@mozilla.org/messengercompose/sendlater;1"]
.getService(Components.interfaces.nsIMsgSendLater);
var identitiesCount, allIdentities, currentIdentity, numMessages, msgFolder;
if (am)
{
allIdentities = am.allIdentities;
identitiesCount = allIdentities.Count();
for (var i = 0; i < identitiesCount; i++)
{
currentIdentity = allIdentities.QueryElementAt(i, Components.interfaces.nsIMsgIdentity);
msgFolder = msgSendlater.getUnsentMessagesFolder(currentIdentity);
if(msgFolder)
{
// if true, descends into all subfolders
numMessages = msgFolder.getTotalMessages(false);
if(numMessages > 0)
return true;
}
}
}
}
catch(ex) {
}
return false;
},
/**
* open the offline panel in the account manager for the currently loaded
* account.
*/
openOfflineAccountSettings: function()
{
window.parent.MsgAccountManager('am-offline.xul');
},
/**
* Prompt the user about going online to send unsent messages, and then send them
* if appropriate. Puts the app back into online mode.
*
* @param aMsgWindow the msg window to be used when going online
*/
goOnlineToSendMessages: function(aMsgWindow)
{
const nsIPS = Components.interfaces.nsIPromptService;
var promptService = Components.classes["@mozilla.org/embedcomp/prompt-service;1"].getService(nsIPS);
var goOnlineToSendMsgs = promptService.confirm(window,
this.offlineBundle.getString('sendMessagesOfflineWindowTitle1'),
this.offlineBundle.getString('sendMessagesOfflineLabel1'));
if (goOnlineToSendMsgs)
this.offlineManager.goOnline(true /* send unsent messages*/, false, aMsgWindow);
},
/**
* Prompts the user to confirm sending of unsent messages. This is different from
* goOnlineToSendMessages which involves going online to send unsent messages.
*
* @return true if the user wants to send unsent messages
*/
confirmSendUnsentMessages: function()
{
const nsIPS = Components.interfaces.nsIPromptService;
var promptService = Components.classes["@mozilla.org/embedcomp/prompt-service;1"].getService(nsIPS);
var alwaysAsk = {value: true};
var sendUnsentMessages = promptService.confirmEx(window,
this.offlineBundle.getString('sendMessagesWindowTitle1'),
this.offlineBundle.getString('sendMessagesLabel1'),
nsIPS.STD_YES_NO_BUTTONS,
null, null, null,
this.offlineBundle.getString('sendMessagesCheckboxLabel1'),
alwaysAsk) == 0 ? true : false;
// if the user changed the ask me setting then update the global pref based on their yes / no answer
if (!alwaysAsk.value)
gPrefBranch.setIntPref("offline.send.unsent_messages", sendUnsentMessages ? 1 : 2);
return sendUnsentMessages;
},
/**
* Should we send unsent messages? Based on the value of
* offline.send.unsent_messages, this method may prompt the user.
* @return true if we should send unsent messages
*/
shouldSendUnsentMessages: function()
{
var sendUnsentWhenGoingOnlinePref = gPrefBranch.getIntPref("offline.send.unsent_messages");
if(sendUnsentWhenGoingOnlinePref == 2) // never send
return false;
// if we we have unsent messages, then honor the offline.send.unsent_messages pref.
else if (this.haveUnsentMessages())
{
if ((sendUnsentWhenGoingOnlinePref == 0 && this.confirmSendUnsentMessages())
|| sendUnsentWhenGoingOnlinePref == 1)
return true;
}
return false;
},
/**
* Prompts the user to download messages for offline use before going offline.
* May update the value of offline.download.download_messages
*
* @return true if the user wants to download messages for offline use.
*/
confirmDownloadMessagesForOfflineUse: function()
{
const nsIPS = Components.interfaces.nsIPromptService;
var promptService = Components.classes["@mozilla.org/embedcomp/prompt-service;1"].getService(nsIPS);
var alwaysAsk = {value: true};
var downloadMessages = promptService.confirmEx(window,
this.offlineBundle.getString('downloadMessagesWindowTitle1'),
this.offlineBundle.getString('downloadMessagesLabel1'),
nsIPS.STD_YES_NO_BUTTONS,
null, null, null,
this.offlineBundle.getString('downloadMessagesCheckboxLabel1'),
alwaysAsk) == 0 ? true : false;
// if the user changed the ask me setting then update the global pref based on their yes / no answer
if (!alwaysAsk.value)
gPrefBranch.setIntPref("offline.download.download_messages", downloadMessages ? 1 : 2);
return downloadMessages;
},
/**
* Get New Mail When Offline
* Prompts the user about going online in order to download new messages.
* Based on the response, will move us back to online mode.
*
* @return true if the user confirms going online.
*/
getNewMail: function()
{
const nsIPS = Components.interfaces.nsIPromptService;
var promptService = Components.classes["@mozilla.org/embedcomp/prompt-service;1"].getService(nsIPS);
var goOnline = promptService.confirm(window,
this.offlineBundle.getString('getMessagesOfflineWindowTitle1'),
this.offlineBundle.getString('getMessagesOfflineLabel1'));
if (goOnline)
this.offlineManager.goOnline(this.shouldSendUnsentMessages(),
false /* playbackOfflineImapOperations */, msgWindow);
return goOnline;
},
/**
* Private helper method to update the state of the Offline menu item
* and the offline status bar indicator
*/
updateOfflineUI: function(aIsOffline)
{
document.getElementById('goOfflineMenuItem').setAttribute("checked", aIsOffline);
var statusBarPanel = document.getElementById('offline-status');
if (aIsOffline)
{
statusBarPanel.setAttribute("offline", "true");
statusBarPanel.setAttribute("tooltiptext", this.offlineBundle.getString("offlineTooltip"));
}
else
{
statusBarPanel.removeAttribute("offline");
statusBarPanel.setAttribute("tooltiptext", this.offlineBundle.getString("onlineTooltip"));
}
},
/**
* private helper method called whenever we detect a change to the offline state
*/
mailOfflineStateChanged: function (aGoingOffline)
{
gFolderJustSwitched = true;
this.updateOfflineUI(aGoingOffline);
}
};