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Codebase Overview

A high-level look at the project's architecture and a guide to where to find things.

Overview of Comm Central

The following directories are included in the comm-central repository:
build Miscellaneous files used by the build process.
calendar The calendar component of Thunderbird (formerly known as the Lightning extension).
​chat Files for the chat component of Thunderbird. There is also related code in mail/components/im.
The subdirectories are:
  • components Various chat features, includes the interfaces that each protocol must implement.
  • content User interface files which become chrome://chat/content/….
  • locales The user-visible strings, in US English. Files from this directory become chrome://chat/locale/….
  • modules JavaScript modules that are specific to chat.
  • protocols Various protocol implementations. Each of subdirectory implements a protocol to the interfaces found under components.
  • themes Common and platform-specific styling specific to chat. Files from this directory become chrome://chat/skin/….
mail Thunderbird specific source code. It's no coincidence that this folder is laid out a lot like the browser and toolkit directories on mozilla-central. Many of the subdirectories follow the same pattern:
  • content User interface files which become chrome://messenger/content/….
  • modules Javascript modules which become resource:///modules/….
  • test Mochitest and/or XPCShell tests.
The subdirectories are:
  • actors Modules which handle communication between processes. See the Firefox documentation for information about actors.
  • app Configuration and packaging instructions. Contains all-thunderbird.js, the default preferences.
  • base The main mail window and several miscellaneous dialogs. Also, things which are common to many parts of the program.
  • branding Icons and imagery.
  • components Various Thunderbird features, including:
    • accountcreation The account setup wizard.
    • addrbook The address book user front end. (Not the address book back end, which is in mailnews/addrbook).
    • cloudfile The cloud attachment feature (a.k.a. FileLink).
    • compose Email composition window.
    • extensions WebExtensions schema and implementation.
    • im The chat front end.
    • preferences The preferences tab.
  • config Build instructions, including the automation mozconfig files.
  • extensions
  • installer Packaging and installation instructions.
  • locales The user-visible strings, in US English. Files from this directory become chrome://messenger/locale/….
  • modules Shared JS modules. Files from this directory become resource:///modules/….
  • test The MozMill user interface tests and the code to run that test suite.
  • themes Common and platform-specific styling of Thunderbird user interface. Files from this directory become chrome://messenger/skin/….
mailnews Source code specific to the Mail and Newsgroups part of Thunderbird and SeaMonkey.
mozharness Files needed for Thunderbird's test infrastructure.
other-licenses Code that is not under the Mozilla license. See http://www.mozilla.org/MPL/ for more info.
suite SeaMonkey-specific source code. Not used in Thunderbird.
taskcluster Files needed for Thunderbird's build infrastructure.
testing Files needed for Thunderbird's test infrastructure.
third_party Libraries developed elsewhere that are included in Thunderbird
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Last modified 1yr ago