Bugzilla is big. Really really big. MDN is big too. This page helps to put two big things together. It:
- Lists Bugzilla "products" that are documented on MDN
- Describes the components within each product (component descriptions were copied / summarized from Bugzilla)
- Maps products and components to MDN project names (ie, "Open Web")
- Indicates the priority for MDN documentation for products and components
- Tries to help new contributors address documentation issues (flagged using the
dev-doc-wantedkeyword in Bugzilla) in MDN - When possible, components are linked to the appropriate area of MDN, to help you find the right place to add your documentation
Bugzilla changes over time as new products and components are added. MDN priorities change as well. If you see something wrong or missing, please add it!
Add-on SDK
The software development kit for building Firefox add-ons.
Note: At this time, the add-on SDK is not documented on MDN. This will change sometime in late 2012 or early 2013. For now, add-on SDK documentation is maintained in the add-on SDK github repository.
| Component | Description | MDN Priority |
|---|---|---|
| Documentation | Issues with the SDK's built-in documentation | |
| General | Other bugs |
Firefox OS
Mozilla's mobile operating system built on web standards.
| Component | Description | MDN Priority |
|---|---|---|
| Builds | Device or desktop build packaging or automation | Medium |
| Gaia (and sub-components) | Firefox OS user interface and apps | High |
| General | Bugs that are not more specifically Gecko or Gaia bugs. | Medium |
| Hardware | Submit bugs to request hardware | Do not document |
Core
Shared components used by Firefox and other Mozilla software, including handling of Web content (HTML, CSS, scripts, images, networking, etc.).
Note: Although listed and managed as a product, this is technically a component.
| Component | Description | MDN Priority |
|---|---|---|
| Build Config | Core build config issues | Low |
| Canvas: 2D | HTML5 <canvas> element, its XUL sibling, and related rendering contexts |
High |
| Canvas: WebGL | WebGL canvas context | High |
| Disability Access APIs | Support for accessibility APIs on the various platforms | Medium |
| Document Navigation | "docshell"; the glue that initiates and monitors document loading and associates documents to their view for rendering | Medium |
| DOM (and sub-components) | The web Document Object Model implementation of Gecko. | High |
| Drag and Drop | Drag and drop functionality anywhere in the applications | Medium |
| Editor | Midas, Mozilla's embeddable editor. | Low |
| Embedding (and sub-components) | APIs, GRE Core, Mac, MFC Embed, Packaging | Low |
| Event Handling | Keyboard typing, mouse actions, focus changes, and other event handling | High |
| File Handling | Helper applications, and guessing Content Types when they aren't specified/known | Low |
| Find Backend | Low | |
| Gecko Profiler | Backend to the built-in profiler | Low |
| General | Bugs in Core which do not fit into other more specific Core components | Varies |
| Geolocation | Geolocation API and framework | High |
| GFX: Color Management | qcms and other issues relating to Mozilla's color management implementation | Low |
| Graphics |
Mapping of cross platform rendering interfaces to Cairo APIs
|
Low |
| Graphics: Layers | Graphics subsystem that implements hardware-accelerated (and software) composition of layers of content | Medium |
| Graphics: Text |
Text and font support in Gecko, including text shaping and font selection
|
High |
| Hardware Abstraction Layer (HAL) | Hardware Abstraction Layer (HAL) code regardless of the backend | Low |
| History: Global | All URLs that a user has visited; history window and link coloring | Medium |
| HTML: Form Submission | HTML form submission | Medium |
| HTML: Parser | consumes content from the web, parses, validates and builds a content model (document) | Low |
| Identity | Persona / BrowserID Gecko and Firefox integration | High |
| Image Blocking | (un)blocking images from servers | Low |
| ImageLib | decodes GIF, JPEG and PNG images, and provides the decoded data to the Compositor for display | Medium |
| Installer: XPInstall Enging | bugs in the underlying cross-platform installation technology | Low |
| Internationalization | issues in supporting multiple locales | High |
| IPC | inter-process communication mechanism used to isolate plugins and content in separate processes | Low |
| Java to XPCOM Bridge | interoperability between XPCOM components and Java objects | Do not document |
| JavaScript engine | The SpiderMonkey JavaScript interpreter engine for the core JavaScript language, independent of the browser's object model | Low |
| jemalloc | malloc implementation | Low |
| js-ctypes | js-ctypes is a FFI (Foreign Function Interface) component for JS/XPCOM; this lets JavaScript code run code written in C | High |
| Keyboard: Navigation | Keyboard shortcuts, access keys/accelerators, and navigation by using the keyboard | Low |
| Layout (and sub-categories) | placement of HTML / CSS components | Low |
| Localization | internationalization | Medium |
| mach | "mach" command-line tool | Low |
| MathML | Mathematical Markup Language | Low |
| MFBT | Headers, macros, data structures, methods, and other functionality which should be available to SpiderMonkey and to all Gecko code, implemented in the mfbt/ source directory | Medium |
| mozglue | Issues in the Android glue, the custom dynamic linker or other parts of the mozglue library | Low |
| Nanojit | JIT compiler infrastructure | Low |
| Networking (and sub-categories) | Modular networking library (aka "Netlib" or "Necko") | Medium |
| Plug-ins | Core Mozilla code that supports registering and using plug-ins | High |
| Preferences: Backend | libPref, the backend library that reads, parses, and writes preferences to the user's hard disk | Low |
| Print Preview | Print Preview rendering problems | Low |
| Printing: Output | printing | Low |
| Printing: Setup | OS printing system, including cross-platform components such as the page setup dialog | Low |
| Profile: BackEnd | creation, deletion and changing of user profiles during the installation process | Low |
| Profile: Migration | conversion of profiles from previous versions | Low |
| Profile: Roaming | Profile Roaming support | Low |
| Quicklaunch | QuickLaunch installer option and preference | Low |
| RDF | Resource Description Framework: Core RDF components, including the in-memory datasource, composite datasource, RDF/XML parser, and RDF resource manager | Low |
| Rewriting and Analysis | static analysis and rewriting tools | Low |
| Security (and sub-components) | CAPS, S/MIME, etc | High |
| Selection | The user action of selecting all or part of a document and highlighting the selected content | Medium |
| Serializers | Conversion to HTML or plaintext, either during saving or during copy/paste | Low |
| Spelling checker | Spelling checker | Low |
| SQL | SQL support | Medium |
| String | Hierarchy of classes related to managing character sequences | Low |
| Style System (CSS) | Handling of CSS stylesheets and the computation of style from CSS stylesheets and HTML attributes | High |
| SVG | The implementation of Scalable Vector Graphics (SVG) | Medium |
| Tracking | Bugs used to track a group of bugs | Do not document |
| Video / Audio | HTML 5 media elements (<video> and <audio>) and the codec implementations for them (Vorbis, Theora, etc) |
High |
| Web Services | Using SOAP and WSDL to call Web Services from scripts | Low |
| WebDAV | Web Distributed Authoring and Versioning protocol support | Low |
| WebRTC (and sub-components) | Bugs related to the implementation of the WebRTC (Real Time Communication) standard | High |
| Widget (and sub-components) | Cross platform widget interfaces and cross platform base implementations | Medium |
| X-remote | X-Remote Client and Server | Low |
| XBL | Extensible Binding Language, used to bind new behavior and new content to XUL and HTML elements | Low |
| XForms | XForms issues including parsing, data model, form controls, and submission | Low |
| XML | Bugs in our XML handling | Low |
| XP Toolkit/Widgets: Menus | Bugs in the cross-platform menu infrastructure | Low |
| XP Toolkit/Widgets: XUL | Bugs in the XUL language | Low |
| XPCOM | Component technology | Medium |
| XPConnect | Facilitates calling between JavaScript and XPCOM components | Medium |
| XSLT | Bugs on Mozilla's XSLT support | Low |
| XTF | eXtensible Tag Framework | Low |
| XUL | XML schema for cross-platform application programming | Medium |
Firefox
Mozilla's web browser.
| Component | Description | MDN Priority |
|---|---|---|
| Bookmarks & History | Bookmarks and history | Medium |
| Build Config | Build and configuration setup | Low |
| Developer Tools (and sub-components) | Developer tools within the Firefox web browser | High |
| Disability Access | Accessibility compliance | Medium |
| Downloads Panel | Issues with the Downloads Panel | Low |
| Extension Compatibility | Version level or extension problems or Gecko problems that cause extensions not to work. | High |
| File Handling | issues dealing with helper applications and guessing Content Types when they aren't specified/known | Low |
| General | bugs in Firefox which do not fit into other more specific Firefox components | Varies |
| Help Documentation | Documentation for end users | Do not document (on MDN) |
| Installer | Application install wizard | Low |
| Keyboard Navigation |
Keyboard shortcut navigation in Firefox's user interface
|
|
| Location Bar | "Smart Location Bar" UI element | |
| Menus | Firefox menus | |
| Microsummaries | Obsolete and deprecated | Low |
| Migration | Profile Migration from other browsers | |
| Page Info | Page Info window | |
| Panorama | Panorama (formerly known as TabCandy) | |
| PDF Viewer | built-in PDF viewing capabilities | |
| Phishing Protection | Phishing protection UI and service | Medium |
| Preferences | Tools->Options UI as well as the preference defaults | High |
| Private Browsing | Private Browsing implementation | Medium |
| RSS Discovery and Preview | Discovery of RSS feeds and inline preview | Low |
| Search | Internet search from the Toolbar Search field | |
| Security | App-level security bugs | High |
| Session Restore | Session restore functionality, including the undo close tab feature | Low |
| Shell Integration | Integration with the host desktop environment | |
| SocialAPI | UI and platform work to integrate the social experience into Firefox | High |
| Tabbed Browser | Browser tab features or problems with the widget itself | |
| Theme | Enhancements or changes to the default theme that ships with Firefox | |
| Toolbars | Toolbars, toolbar customization | |
| Untriaged | Newly filed uncategorized bugs | Varies |
| Web Apps | Web Apps integration in Firefox | |
| Webapp Runtime | Webapp runtime (stub executable launcher, XUL shell) | |
| WinQual Reports | WinQual crash/hang data |
Firefox for Android
The mobile version of Firefox (also known by its code name, "Fennec").
| Component | Description | MDN Priority |
|---|---|---|
| Add-on Manager | extensions, search plugins, and other add-ons | |
| Awesomescreen | main user interface | |
| Data Providers | databases and content providers that handle storage and import/export of profile data | |
| Download Manager | user interface for downloading | |
| Evangelism | bugs that require support from Evangelism team | |
| General | bugs that do not fit into other categories | |
| Graphics, Panning and Zooming | Android-specific code for fast painting, scrolling, and scaling of pages on the screen | |
| Keyboards and IME | Android text input | |
| Plugins | content that uses the Adobe Flash Player plug-in for Android | |
| Reader Mode | interface for the user's Reading List | |
| Text Selection | touch gestures and draggable handles for selecting and copying text | |
| Theme and Visual Design | images, colors, and general look and feel | |
| Web Apps | installing, running, and managing open web applications |
Web Apps
Web Apps are applications that run on any device, and can be distributed through any store or directly by the developer.
| Component | Description | MDN Priority |
|---|---|---|
| AppsInTheCloud | syncing apps between Android / Mac / Windows devices | |
| Dashboard | view and launch currently installed apps | |
| Extension | access and install apps | |
| General | issues that don't fit in another category | |
| HTML | html / javascript implementation of the web apps platform | |
| Infrastructure | infrastructure required to support WebApps project | |
| Soup | Android application to access, and install applications from the marketplace |