Name Description Size
BrowsingContext.webidl Allowed CSS display modes. This needs to be kept in sync with similar values in ServoStyleConsts.h 7753
ChannelWrapper.webidl Load types that correspond to the external types in nsIContentPolicy.idl. Please also update that IDL when updating this list. 17174
ChromeUtils.webidl An optimized QueryInterface method, generated by generateQI. For JS callers, this behaves like a normal QueryInterface function. When called with a supported interface, it returns its `this` object. When called with an unsupported interface, it throws NS_ERROR_NO_INTERFACE. C++ callers use a fast path, and never call the JSAPI or WebIDL methods of this object. 26635
ClonedErrorHolder.webidl A stub object to hold an Error, Exception, or DOMException object to be transferred via structured clone. The object will automatically be decoded directly into the type of the error object that it wraps. This is a temporary workaround for lack of native Error and Exception cloning support, and can be removed once bug 1556604 and bug 1561357 are fixed. 693
DOMCollectedFrames.webidl A single frame collected by the |CompositionRecorder|. 893
DebuggerNotification.webidl 1636
DebuggerNotificationObserver.webidl 1090
DebuggerUtils.webidl 566
DocumentL10n.webidl DocumentL10n is a public interface for handling DOM localization. In it's current form it exposes the DOMLocalization API which allows for localization-specific DOM operations on a defined localization context, and retrival of formatted localization messages out of that context. The context is created when `<link rel="localization"/>` elements are added to the document, and is removed in case all links of that type are removed from it. 2055
DominatorTree.webidl In a directed graph with a root node `R`, a node `A` is said to "dominate" a node `B` iff every path from `R` to `B` contains `A`. A node `A` is said to be the "immediate dominator" of a node `B` iff it dominates `B`, is not `B` itself, and does not dominate any other nodes which also dominate `B` in turn. If we take every node from a graph `G` and create a new graph `T` with edges to each node from its immediate dominator, then `T` is a tree (each node has only one immediate dominator, or none if it is the root). This tree is called a "dominator tree". This interface represents a dominator tree constructed from a HeapSnapshot's heap graph. The domination relationship and dominator trees are useful tools for analyzing heap graphs because they tell you: - Exactly what could be reclaimed by the GC if some node `A` became unreachable: those nodes which are dominated by `A`, - The "retained size" of a node in the heap graph, in contrast to its "shallow size". The "shallow size" is the space taken by a node itself, not counting anything it references. The "retained size" of a node is its shallow size plus the size of all the things that would be collected if the original node wasn't (directly or indirectly) referencing them. In other words, the retained size is the shallow size of a node plus the shallow sizes of every other node it dominates. For example, the root node in a binary tree might have a small shallow size that does not take up much space itself, but it dominates the rest of the binary tree and its retained size is therefore significant (assuming no external references into the tree). 3117
Flex.webidl These objects support visualization of flex containers by the dev tools. 2952
Fluent.webidl FluentMessage is a structure storing an unresolved L10nMessage, as returned by the Fluent Bundle. It stores a FluentPattern of the value and attributes, which can be then passed to bundle.formatPattern. 1573
FrameLoader.webidl Get the docshell from the frame loader. 8190
Glean.webidl Get a metric by name. Returns an object of the corresponding metric type, with only the allowed functions available. 768
HeapSnapshot.webidl A HeapSnapshot represents a snapshot of the heap graph 3810
IOUtils.webidl IOUtils is a simple, efficient interface for performing file I/O from a privileged chrome-only context. All asynchronous I/O tasks are run on a background thread. Pending I/O tasks will block shutdown at the |profileBeforeChange| phase. During this shutdown phase, no additional I/O tasks will be accepted -- method calls to this interface will reject once shutdown has entered this phase. IOUtils methods may reject for any number of reasons. Reasonable attempts have been made to map each common operating system error to a |DOMException|. Most often, a caller only needs to check if a given file wasn't found by catching the rejected error and checking if | === 'NotFoundError'|. In other cases, it is likely sufficient to allow the error to be caught and reported elsewhere. 10526
InspectorUtils.webidl A collection of utility methods for use by devtools. See InspectorUtils.h for documentation on these methods. 8013
IteratorResult.webidl A dictionary which represents the result of a call to a next() method on a JS iterator object. 545
JSActor.webidl WebIDL callback interface version of the nsIObserver interface for use when calling the observe method on JSActors. NOTE: This isn't marked as ChromeOnly, as it has no interface object, and thus cannot be conditionally exposed. 1922
JSProcessActor.webidl An actor architecture designed to allow compositional parent/content communications. The lifetime of a JSProcessActor{Child, Parent} is the `ContentParent` (for the parent-side) / `ContentChild` (for the child-side). 2548
JSWindowActor.webidl An actor architecture designed to allow compositional parent/content communications. The lifetime of a JSWindowActor{Child, Parent} is the `WindowGlobalParent` (for the parent-side) / `WindowGlobalChild` (for the child-side). See for more details on how to use this architecture. 4927
L10nOverlays.webidl 930
MatchGlob.webidl Represents a simple glob pattern matcher. Any occurrence of "*" in the glob pattern matches any literal string of characters in the string being compared. Additionally, if created with `allowQuestion = true`, any occurrence of "?" in the glob matches any single literal character. 855
MatchPattern.webidl A URL match pattern as used by the WebExtension and Chrome extension APIs. A match pattern is a string with one of the following formats: - "<all_urls>" The literal string "<all_urls>" matches any URL with a supported protocol. - <proto>://<host>/<path> A URL pattern with the following placeholders: - <proto> The protocol to match, or "*" to match either "http" or "https". - <host> The hostname to match. May be either a complete, literal hostname to match a specific host, the wildcard character "*", to match any host, or a subdomain pattern, with "*." followed by a domain name, to match that domain name or any subdomain thereof. - <path> A glob pattern for paths to match. A "*" may appear anywhere within the path, and will match any string of characters. If no "*" appears, the URL path must exactly match the pattern path. 4456
MediaController.webidl This enum lists all supported behaviors on the media controller. 2216
MessageManager.webidl 18944
MozDocumentObserver.webidl 690
MozSharedMap.webidl Sets the given key to the given structured-clonable value. The value is synchronously structured cloned, and the serialized value is saved in the map. Unless flush() is called, the new value will be broadcast to content processes after a short delay. 1501
MozStorageAsyncStatementParams.webidl 602
MozStorageStatementParams.webidl 597
MozStorageStatementRow.webidl 394
PlacesEvent.webidl data: PlacesVisit. Fired whenever a page is visited. 4494
PlacesObservers.webidl 1157
PrecompiledScript.webidl Represents a pre-compiled JS script, which can be repeatedly executed in different globals without being re-parsed. 1068
PrioEncoder.webidl 561
PromiseDebugging.webidl This is a utility namespace for promise-debugging functionality 3673
SessionStoreUtils.webidl A callback passed to SessionStoreUtils.forEachNonDynamicChildFrame(). 6368
StructuredCloneHolder.webidl A holder for structured-clonable data which can itself be cloned with little overhead, and deserialized into an arbitrary global. 1182
TelemetryStopwatch.webidl Starts a timer associated with a telemetry histogram. The timer can be directly associated with a histogram, or with a pair of a histogram and an object. @param histogram - a string which must be a valid histogram name. @param obj - Optional parameter. If specified, the timer is associated with this object, meaning that multiple timers for the same histogram may be run concurrently, as long as they are associated with different objects. @param [options.inSeconds=false] - record elapsed time for this histogram in seconds instead of milliseconds. Defaults to false. @returns True if the timer was successfully started, false otherwise. If a timer already exists, it can't be started again, and the existing one will be cleared in order to avoid measurements errors. 9868
UserInteraction.webidl Starts a timer associated with a UserInteraction ID. The timer can be directly associated with a UserInteraction ID, or with a pair of a UserInteraction ID and an object. @param id - the interaction being recorded, as declared in UserInteractions.yaml. This is also the annotation key that will be set in the BHR hang report if a hang occurs before the UserInteraction is finished. @param value - a value to be set on the key in the event that a hang occurs when the timer is running. This value is limited to 50 characters to avoid abuse, and if the value exceeds that limit then no timer is started, an error is printed, and this function returns false. @param obj - Optional parameter. If specified, the timer is associated with this object, meaning that multiple timers for the same annotation key may be run concurrently, as long as they are associated with different objects. @returns True if the timer was successfully started, false otherwise. If a timer already exists, it will be overwritten, and the new timer will include a "(clobbered)" suffix in any BHR annotations that get created. 4449
WebExtensionContentScript.webidl Returns true if the script's match and exclude patterns match the given URI, without reference to attributes such as `allFrames`. 5441
WebExtensionPolicy.webidl Defines the platform-level policies for a WebExtension, including its permissions and the characteristics of its moz-extension: URLs. 8924
WindowGlobalActors.webidl Get or create the JSWindowActor with the given name. See WindowActorOptions from JSWindowActor.webidl for details on how to customize actor creation. 6237
XULFrameElement.webidl The optional open window information provided by the window creation code and used to initialize a new browser. 954
XULMenuElement.webidl 527
XULTextElement.webidl 488
XULTreeElement.webidl Obtain the columns. 4806 2626