All Types

Name Summary  
mozilla.components.feature.customtabs.AbstractCustomTabsService Service providing Custom Tabs related functionality.  
mozilla.components.feature.pwa.AbstractWebAppShellActivity Activity for “standalone” and “fullscreen” web applications.  
mozilla.components.concept.sync.AccessTokenInfo The result of authentication with FxA via an OAuth flow.  
mozilla.appservices.fxaclient.AccessTokenInfo (extensions in package mozilla.components.service.fxa)    
mozilla.components.concept.sync.AccountObserver Observer interface which lets its users monitor account state changes and major events.  
mozilla.components.service.fxa.manager.AccountState States of the FxaAccountManager.  
mozilla.components.browser.session.action.Action Generic interface for actions to be dispatched on a BrowserStore. A user or system action that causes Fact instances to be emitted. (extensions in package mozilla.components.feature.pwa.ext) (extensions in package    
mozilla.components.browser.icons.decoder.AndroidIconDecoder IconDecoder that will use Android’s BitmapFactory in order to decode the byte data. LogSink implementation that writes to Android’s log.  
mozilla.components.ui.progress.AnimatedProgressBar An animated progress bar following the Photon Design System.  
android.content.res.AssetManager (extensions in package SearchEngineProvider implementation to load the included search engines from assets.  
mozilla.components.lib.jexl.ast.AstNode A node of the abstract syntax tree.  
mozilla.components.browser.toolbar.AsyncAutocompleteDelegate An autocomplete delegate which is aware of its parent scope (to check for cancellations). Responsible for processing autocompletion results and discarding stale results when urlView moved on.  
mozilla.components.browser.toolbar.AsyncFilterListener Wraps filter execution in a coroutine context, cancelling prior executions on every invocation. coroutineContext must be of type that doesn’t propagate cancellation of its children upwards.  
mozilla.components.service.sync.logins.AsyncLoginsStorage An interface equivalent to the LoginsStorage interface, but where operations are asynchronous.  
mozilla.components.service.sync.logins.AsyncLoginsStorageAdapter A helper class to wrap a synchronous LoginsStorage implementation and make it asynchronous.  
android.util.AtomicFile (extensions in package mozilla.components.browser.session.ext)    
mozilla.components.concept.sync.AuthException An exception which may happen while obtaining auth information using OAuthAccount.  
mozilla.components.concept.sync.AuthExceptionType An auth-related exception type, for use with AuthException.  
mozilla.components.concept.sync.AuthInfo A Firefox Sync friendly auth object which can be obtained from OAuthAccount. A TextureView that can be adjusted to a specified aspect ratio.    
mozilla.components.concept.toolbar.AutocompleteDelegate Describes an object to which a AutocompleteResult may be applied. Usually, this will delegate to a specific text view.  
mozilla.components.concept.toolbar.AutocompleteResult Describes an autocompletion result.  
mozilla.components.ui.autocomplete.AutocompleteView Aids in testing functionality which relies on some aspects of InlineAutocompleteEditText.  
mozilla.components.concept.awesomebar.AwesomeBar Interface to be implemented by awesome bar implementations.  
mozilla.components.feature.awesomebar.AwesomeBarFeature Connects an AwesomeBar with a Toolbar and allows adding multiple AwesomeBar.SuggestionProvider implementations. Generic interface for fragments, features and other components that want to handle ‘back’ button presses.  
mozilla.components.feature.sync.BackgroundSyncManager A SyncManager implementation which uses WorkManager APIs to schedule sync tasks. Provides common autocomplete functionality powered by domain lists. (extensions in package Class for making alterations to any bookmark node Class for holding metadata about any bookmark node The types of bookmark nodes An interface which defines read/write operations for bookmarks data.  
mozilla.components.feature.awesomebar.provider.BookmarksStorageSuggestionProvider A AwesomeBar.SuggestionProvider implementation that provides suggestions based on the bookmarks stored in the BookmarksStorage.  
kotlin.Boolean (extensions in package mozilla.components.lib.jexl.ext)    
mozilla.components.service.glean.private.BooleanMetricType This implements the developer facing API for recording boolean metrics.  
mozilla.components.browser.session.action.BrowserAction Action implementation related to BrowserState.  
mozilla.components.browser.awesomebar.BrowserAwesomeBar A customizable AwesomeBar implementation.  
mozilla.components.browser.icons.BrowserIcons Entry point for loading icons for websites. A popup menu composed of BrowserMenuItem objects. Helper class for building browser menus. A simple browser menu checkbox. A browser menu compound button. A basic sub-class would only have to provide a layout resource to satisfy BrowserMenuItem.getLayoutResource which contains a View that inherits from CompoundButton. A browser menu item to display a horizontal divider. A menu item for displaying text with an image icon. Interface to be implemented by menu items to be shown in the browser menu. A toolbar of buttons to show inside the browser menu. A simple browser menu switch.  
mozilla.components.browser.session.state.BrowserState Value type that represents the complete state of the browser/engine. The BrowserStore holds the BrowserState (state tree).  
mozilla.components.browser.tabstray.BrowserTabsTray A customizable tabs tray for browsers.  
mozilla.components.browser.toolbar.BrowserToolbar A customizable toolbar for browsers.  
mozilla.components.browser.toolbar.behavior.BrowserToolbarBottomBehavior A CoordinatorLayout.Behavior implementation to be used when placing BrowserToolbar at the bottom of the screen. Helpful tools for dealing with other browsers on this device.  
mozilla.components.concept.push.Bus Interface for a basic bus that is implemented by MessageBus so that classes can observe particular event types.  
kotlin.ByteArray (extensions in package    
mozilla.appservices.fxaclient.Device.Capability (extensions in package mozilla.components.service.fxa)    
kotlin.Char (extensions in package    
mozilla.components.concept.engine.prompt.Choice Value type that represents a select option, optgroup or menuitem html element.  
mozilla.components.concept.fetch.Client A generic Client for fetching resources via HTTP/s.  
org.mozilla.telemetry.measurement.ClientIdMeasurement A unique, randomly generated UUID for this client.  
mozilla.components.feature.awesomebar.provider.ClipboardSuggestionProvider An AwesomeBar.SuggestionProvider implementation that returns a suggestions for an URL in the clipboard (if there’s any). A FactProcessor implementation that keeps all Fact objects in a list.    
mozilla.components.service.glean.private.CommonMetricData This defines the common set of data shared across all the different metric types.  
mozilla.components.service.experiments.Configuration The Configuration class describes how to configure Experiments.  
mozilla.components.service.glean.config.Configuration The Configuration class describes how to configure the Glean. A slight abstraction over PlacesApi.  
mozilla.components.concept.sync.ConstellationState Describes current device and other devices in the constellation. A generic wrapper for values that can get consumed. A generic wrapper for a stream of values that can be consumed. Values will be consumed first in, first out.  
android.content.Context (extensions in package    
mozilla.components.feature.contextmenu.ContextMenuCandidate A candidate for an item to be displayed in the context menu.  
mozilla.components.feature.contextmenu.ContextMenuFeature Feature for displaying a context menu after long-pressing web content.  
mozilla.components.feature.contextmenu.ContextMenuFragment DialogFragment implementation to display the actual context menu dialog.  
mozilla.components.feature.session.CoordinateScrollingFeature Feature implementation for connecting an EngineView with any View that you want to coordinate scrolling behavior with.  
mozilla.components.service.glean.private.CounterMetricType This implements the developer facing API for recording counter metrics.  
mozilla.components.lib.crash.Crash Crash types that are handled by this library.  
mozilla.components.lib.crash.handler.CrashHandlerService Service receiving native code crashes (from GeckoView).  
mozilla.components.lib.crash.CrashReporter A generic crash reporter that can report crashes to multiple services.  
mozilla.components.lib.crash.prompt.CrashReporterActivity Activity showing the crash reporter prompt asking the user for confirmation before submitting a crash report.  
mozilla.components.lib.crash.service.CrashReporterService Interface to be implemented by external services that accept crash reports.  
org.mozilla.telemetry.measurement.CreatedDateMeasurementNew The field ‘created’ from CreatedDateMeasurement will be deprecated for the createdDate field  
org.mozilla.telemetry.measurement.CreatedTimestampMeasurementNew The field ‘created’ from CreatedTimestampMeasurement will be deprecated for the createdTimestamp field Contains functionality to manage custom domains for auto-completion. Provides autocomplete functionality for domains based on a list managed by CustomDomains. Holds configuration data for a Custom Tab. Use createFromIntent to create instances.    
mozilla.components.feature.customtabs.CustomTabsToolbarFeature Initializes and resets the Toolbar for a Custom Tab based on the CustomTabConfig.  
mozilla.components.browser.icons.loader.DataUriIconLoader An IconLoader implementation that will base64 decode the image bytes from a data:image uri.  
mozilla.components.service.glean.private.DatetimeMetricType This implements the developer facing API for recording datetime metrics.  
mozilla.components.browser.icons.generator.DefaultIconGenerator IconGenerator implementation that will generate an icon with a background color, rounded corners and a letter representing the URL.  
mozilla.components.concept.engine.DefaultSettings Settings implementation used to set defaults for Engine and EngineSession.  
mozilla.components.feature.contextmenu.DefaultSnackbarDelegate Default implementation for ContextMenuCandidate.SnackbarDelegate. Will display a standard default Snackbar.  
mozilla.components.browser.awesomebar.layout.DefaultSuggestionLayout Default implementation of SuggestionLayout to be used by BrowserAwesomeBar.  
mozilla.components.concept.sync.Device Describes a device in the DeviceConstellation.  
mozilla.appservices.fxaclient.Device (extensions in package mozilla.components.service.fxa)    
mozilla.components.concept.sync.DeviceCapability Capabilities that a Device may have.  
mozilla.components.concept.sync.DeviceConstellation Describes available interactions with the current device and other devices associated with an OAuthAccount.  
mozilla.components.concept.sync.DeviceConstellationObserver Allows monitoring constellation state.  
mozilla.components.concept.sync.DeviceEvent Incoming device events, targeted at the current device.  
mozilla.components.concept.sync.DeviceEventOutgoing Outgoing device events, targeted at other devices.  
mozilla.components.concept.sync.DeviceEventsObserver Allows monitoring events targeted at the current device.  
mozilla.components.concept.sync.DevicePushSubscription Describes an Autopush-compatible push channel subscription.  
mozilla.components.service.fxa.manager.DeviceTuple Helper data class that wraps common device initialization parameters.  
mozilla.components.concept.sync.DeviceType Describes a type of the physical device in the constellation.  
mozilla.components.browser.icons.loader.DiskIconLoader IconLoader implementation that loads icons from a disk cache.  
mozilla.components.browser.icons.preparer.DiskIconPreparer IconPreprarer implementation implementation that will add known resource URLs (from a disk cache) to the request if the request doesn’t contain a list of resources yet.  
mozilla.components.browser.icons.processor.DiskIconProcessor IconProcessor implementation that saves icons in the disk cache. Class intended for internal use which encapsulates meta data about a domain. Provides autocomplete functionality for domains, based on a provided list of assets (see Domains) and/or a custom domain list managed by CustomDomains. Describes an autocompletion result against a list of domains. Contains functionality to access domain lists shipped as part of this module’s assets.  
mozilla.components.ui.doorhanger.Doorhanger A Doorhanger is a floating heads-up popup that can be anchored to a view. They are presented to notify the user of something that is important.  
mozilla.components.ui.doorhanger.DoorhangerPrompt Builder for creating a prompt Doorhanger providing a way to present decisions to users.  
kotlin.Double (extensions in package mozilla.components.lib.jexl.ext)    
mozilla.components.browser.session.Download Value type that represents a Download.  
mozilla.components.feature.downloads.DownloadDialogFragment This is a general representation of a dialog meant to be used in collaboration with DownloadsFeature to show a dialog before a download is triggered. If SimpleDownloadDialogFragment is not flexible enough for your use case you should inherit for this class. Be mindful to call onStartDownload when you want to start the download.  
mozilla.components.feature.downloads.DownloadManager Handles the interactions with the AndroidDownloadManager.  
mozilla.components.browser.session.state.DownloadState Value type that represents a Download.    
mozilla.components.feature.downloads.DownloadsFeature Feature implementation to provide download functionality for the selected session. The feature will subscribe to the selected session and listen for downloads. (extensions in package    
mozilla.components.concept.engine.Engine Entry point for interacting with the engine implementation.  
mozilla.components.concept.engine.EngineSession Class representing a single engine session.  
mozilla.components.concept.engine.EngineSessionState The state of an EngineSession. An instance can be obtained from EngineSession.saveState. Creating a new EngineSession and calling EngineSession.restoreState with the same state instance should restore the previous session.  
mozilla.components.concept.engine.EngineView View component that renders web content.  
mozilla.components.feature.session.behavior.EngineViewBottomBehavior A CoordinatorLayout.Behavior implementation to be used with EngineView when placing a toolbar at the bottom of the screen.  
mozilla.components.feature.session.EngineViewPresenter Presenter implementation for EngineView.  
mozilla.components.concept.push.Error Various error types.  
mozilla.components.browser.errorpages.ErrorType Enum containing all supported error types that we can display an error page for.  
mozilla.components.service.glean.private.EventMetricType This implements the developer facing API for recording events.  
mozilla.components.lib.crash.handler.ExceptionHandler Thread.UncaughtExceptionHandler implementation that forwards crashes to the CrashReporter instance.  
mozilla.components.service.fretboard.Experiment Represents an A/B test experiment, independent of the underlying storage mechanism  
mozilla.components.service.fretboard.ExperimentDescriptor Class used to identify an experiment  
mozilla.components.service.fretboard.ExperimentDownloadException Exception while downloading experiments from the server  
mozilla.components.service.fretboard.ExperimentPayload Class which represents an experiment associated data  
mozilla.components.service.fretboard.ExperimentSource Represents a location where experiments are stored (Kinto, a JSON file on a server, etc)  
mozilla.components.service.fretboard.ExperimentStorage Represents a location where experiments are stored locally on the device  
mozilla.components.service.experiments.ExperimentsInternalAPI Entry point of the library.  
mozilla.components.service.fretboard.ExperimentsSnapshot Represents an experiment sync result A fact describing a generic event that has occurred in a component. A FactProcessor receives Fact instances to process them further. Global API for collecting Fact objects and forwarding them to FactProcessor instances.  
mozilla.components.service.fxa.manager.FailedToLoadAccountException Propagated via AccountObserver.onError if we fail to load a locally stored account during initialization. No action is necessary from consumers. Account state has been re-initialized.  
mozilla.components.tooling.fetch.tests.FetchTestCases Generic test cases for concept-fetch implementations. (extensions in package TelemetryStorage implementation that stores pings as files on disk.  
mozilla.components.feature.findinpage.view.FindInPageBar A customizable “Find in page” bar implementing FindInPageView.  
mozilla.components.feature.findinpage.FindInPageFeature Feature implementation that will keep a FindInPageView in sync with a bound Session.  
mozilla.components.feature.findinpage.view.FindInPageView An interface for views that can display “find in page” results and related UI controls.  
mozilla.components.service.fxa.FirefoxAccount FirefoxAccount represents the authentication state of a client.  
mozilla.components.feature.accounts.FirefoxAccountsAuthFeature Ties together an account manager with a session manager/tabs implementation, facilitating an authentication flow.  
org.mozilla.telemetry.measurement.FirstRunProfileDateMeasurement This measurement will save the timestamp of the first time it was instantiated and report this as profile creation date. Class which uses a flat JSON file as an experiment storage mechanism  
kotlin.Float (extensions in package mozilla.components.lib.jexl.ext)    
mozilla.components.service.fretboard.Fretboard Entry point of the library  
mozilla.components.feature.session.FullScreenFeature Feature implementation for handling fullscreen mode (exiting and back button presses).  
mozilla.components.service.fxa.manager.FxaAccountManager An account manager which encapsulates various internal details of an account lifecycle and provides an observer interface along with a public API for interacting with an account. The internal state machine abstracts over state space as exposed by the fxaclient library, not the internal states experienced by lower-level representation of a Firefox Account; those are opaque to us.  
mozilla.components.service.fxa.FxaDeviceConstellation Provides an implementation of DeviceConstellation backed by a FirefoxAccount.  
mozilla.components.service.fxa.FxaException High-level exception class for the exceptions thrown in the Rust library.  
mozilla.components.service.fxa.FxaNetworkException Thrown on a network error.  
mozilla.components.service.fxa.FxaPanicException Thrown when the Rust library hits an assertion or panic (this is always a bug).  
mozilla.components.service.fxa.FxaUnauthorizedException Thrown when the operation requires additional authorization.  
mozilla.components.service.fxa.FxaUnspecifiedException Thrown when the Rust library hits an unexpected error that isn’t a panic. This may indicate library misuse, network errors, etc.  
mozilla.components.browser.engine.gecko.GeckoEngine Gecko-based implementation of Engine interface.  
mozilla.components.browser.engine.gecko.GeckoEngineSession Gecko-based EngineSession implementation.  
mozilla.components.browser.engine.gecko.GeckoEngineView Gecko-based EngineView implementation.  
mozilla.components.browser.engine.gecko.permission.GeckoPermissionRequest Gecko-based implementation of PermissionRequest.  
mozilla.components.browser.engine.gecko.webextension.GeckoPort Gecko-based implementation of Port, wrapping the native port provided by GeckoView.  
mozilla.components.browser.engine.gecko.fetch.GeckoViewFetchClient GeckoView (GeckoWebExecutor) based implementation of Client.  
mozilla.components.browser.engine.gecko.webextension.GeckoWebExtension Gecko-based implementation of WebExtension, wrapping the native web extension object provided by GeckoView.  
mozilla.components.feature.sync.GeneralSyncManager A base SyncManager implementation which manages a dispatcher, handles authentication and requests synchronization in the following manner: On authentication AND on store set changes (add or remove)…  
mozilla.components.service.glean.debug.GleanDebugActivity Debugging activity exported by Glean to allow easier debugging. For example, invoking debug mode in the Glean sample application can be done via adb using the following command:  
mozilla.components.feature.sync.GlobalSyncableStoreProvider A singleton registry of SyncableStore objects. WorkManagerSyncDispatcher will use this to access configured SyncableStore instances.  
mozilla.components.lib.jexl.grammar.Grammar Grammar of the JEXL language.  
mozilla.components.concept.fetch.Header Represents a Header containing of a name and value.  
mozilla.components.concept.fetch.Headers A collection of HTTP Headers (immutable) of a Request or Response.  
mozilla.components.service.glean.private.HistogramType Enumeration of the different kinds of histograms supported by metrics based on histograms. Describes an autocompletion result against history storage.  
mozilla.components.feature.session.HistoryDelegate Implementation of the HistoryTrackingDelegate which delegates work to an instance of HistoryStorage. An interface which defines read/write methods for history data.  
mozilla.components.feature.awesomebar.provider.HistoryStorageSuggestionProvider A AwesomeBar.SuggestionProvider implementation that provides suggestions based on the browsing history stored in the HistoryStorage.  
mozilla.components.concept.engine.history.HistoryTrackingDelegate An interface used for providing history information to an engine (e.g. for link highlighting), and receiving history updates from the engine (visits to URLs, title changes).  
mozilla.components.concept.engine.HitResult Represents all the different supported types of data that can be found from long clicking an element.  
mozilla.components.browser.icons.loader.HttpIconLoader IconLoader implementation that will try to download the icon for resources that point to an http(s) URL.  
mozilla.components.lib.fetch.httpurlconnection.HttpURLConnectionClient HttpURLConnection implementation of Client.  
mozilla.components.browser.icons.decoder.ICOIconDecoder IconDecoder implementation for decoding ICO files.  
mozilla.components.browser.icons.Icon An Icon returned by BrowserIcons after processing an IconRequest  
mozilla.components.browser.icons.decoder.IconDecoder An icon decoder that can decode a ByteArray into a Bitmap.  
mozilla.components.browser.icons.generator.IconGenerator A IconGenerator implementation can generate a Bitmap for an IconRequest. It’s a fallback if no icon could be loaded for a specific URL.  
mozilla.components.browser.icons.loader.IconLoader A loader that can load an icon from an IconRequest.Resource.  
mozilla.components.browser.icons.preparer.IconPreprarer An IconPreparer implementation receives an IconRequest before it is getting loaded. The preparer has the option to rewrite the IconRequest and return a new instance.  
mozilla.components.browser.icons.processor.IconProcessor An IconProcessor implementation receives the Icon with the IconRequest and IconRequest.Resource after the icon was loaded. The IconProcessor has the option to rewrite a loaded Icon and return a new instance.  
mozilla.components.browser.icons.IconRequest A request to load an Icon.  
mozilla.components.service.sync.logins.IdCollisionException This is thrown if add() is given a record whose id is not blank, and collides with a record already known to the storage instance. An in-memory implementation of  
mozilla.components.ui.autocomplete.InlineAutocompleteEditText A UI edit text component which supports inline autocompletion.  
kotlin.Int (extensions in package mozilla.components.lib.jexl.ext)    
android.content.Intent (extensions in package    
mozilla.components.feature.intent.IntentProcessor Processor for intents which should trigger session-related actions.  
mozilla.components.concept.fetch.interceptor.Interceptor An Interceptor for a Client implementation.  
mozilla.components.service.sync.logins.InvalidKeyException This error is emitted in two cases:  
mozilla.components.service.sync.logins.InvalidRecordException This is thrown on attempts to insert or update a record so that it is no longer valid, where “invalid” is defined as such:  
org.json.JSONArray (extensions in package    
mozilla.components.service.fretboard.JSONExperimentParser Default JSON parsing implementation  
org.json.JSONObject (extensions in package    
org.mozilla.telemetry.serialize.JSONPingSerializer TelemetryPingSerializer that uses the org.json library provided by the Android system. The Parser is a function that takes a JSON Response and maps it to a Suggestion list.  
mozilla.components.lib.jexl.value.JexlArray JEXL Array type.  
mozilla.components.lib.jexl.value.JexlBoolean JEXL Boolean type.  
mozilla.components.lib.jexl.evaluator.JexlContext Variables defined in the JexlContext are available to expressions.  
mozilla.components.lib.jexl.value.JexlDouble JEXL Double type.  
mozilla.components.lib.jexl.JexlException Generic exception thrown when evaluating an expression failed.  
mozilla.components.lib.jexl.value.JexlInteger JEXL Integer type.  
mozilla.components.lib.jexl.value.JexlObject JEXL Object type.  
mozilla.components.lib.jexl.value.JexlString JEXL String type.  
mozilla.components.lib.jexl.value.JexlUndefined JEXL undefined type.  
mozilla.components.lib.jexl.value.JexlValue A JEXL value type.  
mozilla.components.service.fretboard.scheduler.jobscheduler.JobSchedulerSyncScheduler Class used to schedule sync of experiment configuration from the server  
org.mozilla.telemetry.schedule.jobscheduler.JobSchedulerTelemetryScheduler TelemetryScheduler implementation that uses Android’s JobScheduler API to schedule ping uploads.    
mozilla.components.lib.dataprotect.KeyStoreWrapper Wraps the critical functions around a Java KeyStore to better facilitate testing and instrumenting.  
mozilla.components.lib.dataprotect.Keystore Manages data protection using a system-isolated cryptographic key.  
mozilla.components.lib.dataprotect.KeystoreException Exception type thrown by {@link Keystore} when an error is encountered that is not otherwise covered by an existing sub-class to GeneralSecurityException.  
mozilla.components.service.fretboard.source.kinto.KintoExperimentSource Class responsible for fetching and parsing experiments from a Kinto server  
mozilla.components.service.glean.private.LabeledMetricType This implements the developer facing API for labeled metrics.  
mozilla.components.browser.session.LegacySessionManager This class provides access to a centralized registry of all active sessions.  
androidx.lifecycle.Lifecycle (extensions in package An interface for all entry points to feature components to implement in order to make them lifecycle aware.  
mozilla.components.concept.engine.LifecycleObserver LifecycleObserver which dispatches lifecycle events to an EngineView.  
mozilla.components.service.glean.private.Lifetime Enumeration of different metric lifetimes.  
mozilla.components.tooling.lint.LintIssueRegistry Registry which provides a list of our custom lint checks to be performed on an Android project.  
mozilla.components.tooling.lint.LintLogChecks Custom lint checks related to logging.  
kotlin.collections.List (extensions in package mozilla.components.lib.jexl.ext)    
androidx.lifecycle.LiveData (extensions in package    
org.mozilla.telemetry.measurement.LocaleMeasurement LocalizationProvider implementation that only provides the language and country from the system’s default languageTag.  
mozilla.components.browser.engine.gecko.integration.LocaleSettingUpdater Class to set the locales setting for geckoview, updating from the locale of the device. API for logging messages and exceptions. A FactProcessor implementation that prints collected Fact instances to the log. A wrapper for the Log object providing a more convenient API for logging.  
mozilla.components.service.sync.logins.LoginsStorageException The base class of all errors emitted by logins storage.  
kotlin.collections.Map (extensions in package    
kotlin.collections.Map (extensions in package A collection of non-domain specific Matchers. Value type that represents a media element that is present on the currently displayed page in a session.  
mozilla.components.browser.icons.loader.MemoryIconLoader An IconLoader implementation that loads icons from an in-memory cache.  
mozilla.components.browser.icons.preparer.MemoryIconPreparer An IconPreprarer implementation that will add known resource URLs (from an in-memory cache) to the request if the request doesn’t contain a list of resources yet.  
mozilla.components.browser.icons.processor.MemoryIconProcessor An IconProcessor implementation that saves icons in the in-memory cache.  
mozilla.components.concept.engine.webextension.MessageHandler A handler for all messaging related events, usable for both content and background scripts.  
mozilla.components.service.sync.logins.MismatchedLockException This is thrown if lock()/unlock() pairs don’t match up.  
android.view.MotionEvent (extensions in package    
mozilla.components.lib.crash.service.MozillaSocorroService A CrashReporterService implementation uploading crash reports to  
mozilla.components.concept.fetch.MutableHeaders A collection of HTTP Headers (mutable) of a Request or Response.  
mozilla.components.browser.engine.gecko.NestedGeckoView geckoView that supports nested scrolls (for using in a CoordinatorLayout).  
mozilla.components.browser.engine.system.NestedWebView WebView that supports nested scrolls (for using in a CoordinatorLayout).  
mozilla.components.service.glean.private.NoExtraKeys An enum with no values for convenient use as the default set of extra keys that an EventMetricType can accept.  
mozilla.components.service.sync.logins.NoSuchRecordException This is thrown if update() is performed with a record whose ID does not exist.  
mozilla.components.concept.sync.OAuthAccount Facilitates testing consumers of FirefoxAccount.  
mozilla.components.concept.sync.OAuthScopedKey Scoped key data. Interface for observables. This interface is implemented by ObserverRegistry so that classes that want to be observable can implement the interface by delegation: A helper for classes that want to get observed. This class keeps track of registered observers and can automatically unregister observers if a LifecycleOwner is provided.  
mozilla.components.lib.fetch.okhttp.OkHttpClient Client implementation using OkHttp.  
org.mozilla.telemetry.measurement.OperatingSystemVersionMeasurement A representation of an Android Padding.    
mozilla.components.concept.engine.permission.Permission Represents all the different supported permission types.  
mozilla.components.concept.engine.permission.PermissionRequest Represents a permission request, used when engines need access to protected resources. Every request must be handled by either calling grant or reject.  
mozilla.components.feature.session.PictureInPictureFeature A simple implementation of Picture-in-picture mode if on a supported platform.  
mozilla.components.service.glean.private.PingType This implements the developer facing API for custom pings.  
mozilla.components.service.glean.scheduler.PingUploadWorker This class is the worker class used by WorkManager to handle uploading the ping to the server. Implementation of the BookmarksStorage which is backed by a Rust Places lib via PlacesApi. Implementation of the HistoryStorage which is backed by a Rust Places lib via PlacesApi. A base class for concrete implementations of PlacesStorages  
mozilla.components.service.pocket.PocketEndpoint Makes requests to the Pocket API and returns the requested data. A recommended video as returned from the Pocket Global Video Recommendation endpoint v2.  
org.mozilla.telemetry.measurement.PocketIdMeasurement A unique, randomly generated UUID for this pocket client for fire-tv instance. This is distinct from the telemetry clientId. The clientId should not be able to be tied to the pocketId in any way. The metadata for a spoken article’s audio file.  
mozilla.components.service.pocket.PocketListenEndpoint Makes requests to the Pocket Listen API and returns the requested data. A response from the Pocket API: the subclasses determine the type of the result and contain usable data.  
mozilla.components.concept.engine.webextension.Port Represents a port for exchanging messages:  
mozilla.components.concept.engine.mediaquery.PreferredColorScheme A simple data class used to suggest to page content that the user prefers a particular color scheme.  
mozilla.appservices.fxaclient.Profile (extensions in package mozilla.components.service.fxa)    
mozilla.components.feature.prompts.PromptFeature Feature for displaying native dialogs for html elements like: input type date, file, time, color, option, menu, authentication, confirmation and alerts.  
mozilla.components.concept.engine.prompt.PromptRequest Value type that represents a request for showing a native dialog for prompt web content.  
mozilla.components.lib.publicsuffixlist.PublicSuffixList API for reading and accessing the public suffix list.  
mozilla.components.concept.push.PushMessage A push message holds the information needed to pass the message on to the appropriate receiver.  
mozilla.components.concept.push.PushProcessor A push notification processor that handles registration and new messages from the PushService provided. Starting Push in the Application’s onCreate is recommended.  
mozilla.components.concept.push.PushService Implemented by push services like Firebase Cloud Messaging and Amazon Device Messaging SDKs to allow the PushProcessor to manage their lifecycle.  
mozilla.appservices.fxaclient.Device.PushSubscription (extensions in package mozilla.components.service.fxa)    
mozilla.components.concept.push.PushType The different kinds of push messages.  
mozilla.components.feature.qr.QrFeature Feature implementation that provides QR scanning functionality via the QrFragment.  
mozilla.components.feature.qr.QrFragment A Fragment that displays a QR scanner.  
mozilla.components.feature.readerview.view.ReaderViewControlsBar A customizable ReaderView control bar implementing ReaderViewControlsView.  
mozilla.components.feature.readerview.view.ReaderViewControlsView An interface for views that can display ReaderView appearance controls (e.g. font size, font type).  
mozilla.components.feature.readerview.ReaderViewFeature Feature implementation that provides a reader view for the selected session. This feature is implemented as a web extension and needs to be installed prior to use (see ReaderViewFeature.install).  
mozilla.components.concept.fetch.Request The Request data class represents a resource request to be send by a Client.  
mozilla.components.service.sync.logins.RequestFailedException This error is emitted if a request to a sync server failed.  
mozilla.components.concept.engine.request.RequestInterceptor Interface for classes that want to intercept load requests to allow custom behavior.  
android.content.res.Resources (extensions in package    
mozilla.components.concept.fetch.Response The Response data class represents a reponse to a Request send by a Client.    
mozilla.components.browser.engine.system.matcher.ReversibleString A String wrapper utility that allows for efficient string reversal. We regularly need to reverse strings. The standard way of doing this in Java would be to copy the string to reverse (e.g. using StringBuffer.reverse()). This seems wasteful when we only read our Strings character by character, in which case can just transpose positions as needed. See SafeIntent for more background: applications can put garbage values into Bundles. This is primarily experienced when there’s garbage in the Intent’s Bundle. However that Bundle can contain further bundles, and we need to handle those defensively too. External applications can pass values into Intents that can cause us to crash: in defense, we wrap Intent and catch the exceptions they may force us to throw. See bug 1090385 for more.  
mozilla.appservices.fxaclient.ScopedKey (extensions in package mozilla.components.service.fxa) A data class representing a search engine. Interface for classes that want to filter the list of search engines a SearchEngineProvider implementation loads. Data class providing an ordered list of search engines and a default search engine from a specific source. This class provides access to a centralized registry of search engines. A very simple parser for search plugins. Interface for classes that load search engines from a specific source. Class providing language, country and optionally region (actual location) of the user/device to customize the search experience. Encapsulates a set of properties which define a result of querying history storage. Provides an interface to get search suggestions from a given SearchEngine. Async function responsible for taking a URL and returning the results  
mozilla.components.feature.awesomebar.provider.SearchSuggestionProvider A AwesomeBar.SuggestionProvider implementation that provides a suggestion containing search engine suggestions (as chips) from the passed in SearchEngine.  
mozilla.components.feature.toolbar.SearchUseCase A function representing the search use case, accepting the search terms as string. Contains use cases related to the search feature.  
org.mozilla.telemetry.measurement.SearchesMeasurement A TelemetryMeasurement implementation to count the number of times a user has searched with a specific engine from a specific location.  
mozilla.components.browser.session.state.SecurityInfoState A value type holding security information for a Session.  
mozilla.components.browser.session.SelectionAwareSessionObserver This class is a combination of Session.Observer and SessionManager.Observer. It provides functionality to observe changes to a specified or selected session, and can automatically take care of switching over the observer in case a different session gets selected (see observeFixed and observeSelected).  
mozilla.components.lib.crash.service.SentryService A CrashReporterService implementation that uploads crash reports to a Sentry server.  
mozilla.components.service.sync.logins.ServerPassword Raw password data that is stored by the storage implementation.  
mozilla.components.browser.engine.servo.ServoEngine Servo-based implementation of the Engine interface.  
mozilla.components.browser.engine.servo.ServoEngineSession Servo-based EngineSession implementation.  
mozilla.components.browser.engine.servo.ServoEngineSessionState No-op implementation of EngineSessionState.  
mozilla.components.browser.engine.servo.ServoEngineView Servo-based implementation of EngineView.  
mozilla.components.browser.session.Session Value type that represents the state of a browser session. Changes can be observed.  
mozilla.components.browser.session.action.SessionAction BrowserAction implementations related to updating the a single SessionState inside BrowserState.  
mozilla.components.feature.session.bundling.SessionBundle A bundle of sessions and their state.  
mozilla.components.feature.session.bundling.SessionBundleStorage A Session storage implementation that saves snapshots as a SessionBundle.  
mozilla.components.feature.session.SessionFeature Feature implementation for connecting the engine module with the session module.  
mozilla.components.browser.session.action.SessionListAction BrowserAction implementations related to updating the list of SessionState inside BrowserState.  
mozilla.components.browser.session.SessionManager This class provides access to a centralized registry of all active sessions.  
mozilla.components.browser.session.state.SessionState Value type that represents the state of a browser session (“tab”). Session storage for persisting the state of a SessionManager to disk (browser and engine session states).  
mozilla.components.feature.awesomebar.provider.SessionSuggestionProvider A AwesomeBar.SuggestionProvider implementation that provides suggestions based on the sessions in the SessionManager (Open tabs).  
mozilla.components.feature.session.SessionUseCases Contains use cases related to the session feature.  
mozilla.components.concept.engine.Settings Holds settings of an engine or session. Concrete engine implementations define how these settings are applied i.e. whether a setting is applied on an engine or session instance.  
mozilla.components.feature.session.SettingsUseCases Contains use cases related to user settings.  
mozilla.components.service.fxa.SharedPrefAccountStorage Provides autocomplete functionality for domains based on provided list of assets (see Domains). A simple browser menu item displaying text.  
mozilla.components.feature.downloads.SimpleDownloadDialogFragment A confirmation dialog to be called before a download is triggered. Meant to be used in collaboration with DownloadsFeature  
mozilla.components.feature.sitepermissions.SitePermissions A site permissions and its state.  
mozilla.components.feature.sitepermissions.SitePermissionsFeature This feature will subscribe to the currently selected Session and display a suitable dialogs based on Session.Observer.onAppPermissionRequested or Session.Observer.onContentPermissionRequested events. Once the dialog is closed the PermissionRequest will be consumed.  
mozilla.components.feature.sitepermissions.SitePermissionsRules Indicate how site permissions must behave by permission category.  
mozilla.components.feature.sitepermissions.SitePermissionsStorage A storage implementation to save SitePermissions. Helper to transform SessionManager.Snapshot instances to JSON and back.  
mozilla.components.browser.session.state.SourceState Represents the source/origin of a session to describe how and why it was created.  
mozilla.components.concept.sync.StatePersistenceCallback Describes a delegate object that is used by OAuthAccount to persist its internal state as it changes.  
org.mozilla.telemetry.measurement.StaticMeasurement An interface which provides generic operations for storing browser data like history and bookmarks.  
mozilla.components.feature.sync.StorageSync A feature implementation which orchestrates data synchronization of a set of SyncableStore-s.    
kotlin.String (extensions in package mozilla.components.browser.engine.system.matcher)    
kotlin.String (extensions in package mozilla.components.lib.jexl.ext)    
kotlin.String (extensions in package    
mozilla.components.service.glean.private.StringListMetricType This implements the developer facing API for recording string list metrics.  
mozilla.components.service.glean.private.StringMetricType This implements the developer facing API for recording string metrics.  
mozilla.components.browser.awesomebar.layout.SuggestionLayout A SuggestionLayout implementation defines how the suggestions of the BrowserAwesomeBar are getting layout. By default BrowserAwesomeBar uses DefaultSuggestionLayout. However a consumer can provide its own implementation in order to create a customized look & feel.  
mozilla.components.browser.awesomebar.transform.SuggestionTransformer A SuggestionTransformer takes an input list of AwesomeBar.Suggestion and returns a new list of transformed [AwesomeBar.Suggestion objects.
mozilla.components.browser.awesomebar.layout.SuggestionViewHolder A view holder implementation for displaying an AwesomeBar.Suggestion.    
mozilla.components.service.sync.logins.SyncAuthInvalidException This indicates that the authentication information (e.g. the SyncUnlockInfo) provided to AsyncLoginsStorage.sync is invalid. This often indicates that it’s stale and should be refreshed with FxA (however, care should be taken not to get into a loop refreshing this information).  
mozilla.components.feature.sync.SyncDispatcher Internal interface to enable testing SyncManager implementations independently from SyncDispatcher.  
mozilla.components.service.fretboard.scheduler.jobscheduler.SyncJob JobScheduler job used to updating the list of experiments  
mozilla.components.concept.sync.SyncManager Describes a “sync” entry point for an application.  
mozilla.components.concept.sync.SyncResult A set of results of running a sync operation for multiple instances of SyncableStore.  
mozilla.components.concept.sync.SyncStatus Results of running a sync via SyncableStore.sync.  
mozilla.components.concept.sync.SyncStatusObserver An interface for consumers that wish to observer “sync lifecycle” events.  
mozilla.components.service.sync.logins.SyncUnlockInfo This type contains the set of information required to successfully connect to the server and sync.  
mozilla.components.service.sync.logins.SyncableLoginsStore Wraps AsyncLoginsStorage instance along with a lazy encryption key.  
mozilla.components.concept.sync.SyncableStore Describes a “sync” entry point for a storage layer.  
mozilla.components.browser.engine.system.SystemEngine WebView-based implementation of the Engine interface.  
mozilla.components.browser.engine.system.SystemEngineSession WebView-based EngineSession implementation.  
mozilla.components.browser.engine.system.SystemEngineView WebView-based implementation of EngineView.  
mozilla.components.browser.engine.system.permission.SystemPermissionRequest WebView-based implementation of PermissionRequest.  
mozilla.components.browser.engine.system.window.SystemWindowRequest WebView-based implementation of WindowRequest. A tab of a TabCollection. A collection of tabs. A storage implementation that saves snapshots of tabs / sessions in named collections.  
mozilla.components.feature.tabs.toolbar.TabCounterToolbarButton A Toolbar.Action implementation that shows a TabCounter.  
mozilla.appservices.fxaclient.TabHistoryEntry (extensions in package mozilla.components.service.fxa)    
mozilla.appservices.fxaclient.AccountEvent.TabReceived (extensions in package mozilla.components.service.fxa)    
mozilla.components.browser.tabstray.TabTouchCallback An ItemTouchHelper.Callback for support gestures on tabs in the tray.  
mozilla.components.browser.tabstray.TabViewHolder A RecyclerView ViewHolder implementation for “tab” items.  
mozilla.components.browser.tabstray.TabsAdapter RecyclerView adapter implementation to display a list/grid of tabs.  
mozilla.components.feature.tabs.tabstray.TabsFeature Feature implementation for connecting a tabs tray implementation with the session module.  
mozilla.components.feature.tabs.toolbar.TabsToolbarFeature Feature implementation for connecting a tabs tray implementation with a toolbar implementation.  
mozilla.components.concept.tabstray.TabsTray Generic interface for components that provide “tabs tray” functionality.  
mozilla.components.feature.tabs.tabstray.TabsTrayInteractor Interactor for a tabs tray component. Subscribes to the tabs tray and invokes use cases to update the session manager.  
mozilla.components.feature.tabs.tabstray.TabsTrayPresenter Presenter implementation for a tabs tray implementation in order to update the tabs tray whenever the state of the session manager changes.  
mozilla.components.feature.tabs.TabsUseCases Contains use cases related to the tabs feature.  
org.mozilla.telemetry.config.TelemetryConfiguration The TelemetryConfiguration class collects the information describing the telemetry setup of an app. There are some parts that every app needs to configure: Where should measurements store data? What servers are we actually uploading pings to? This class should provide good defaults so that in the best case it is not needed to modify the configuration. This mobile-specific ping is intended to provide the most critical data in a concise format, allowing for frequent uploads. Since this ping is used to measure retention, it should be sent each time the app is opened.  
org.mozilla.telemetry.event.TelemetryEvent TelemetryEvent specifies a common events data format, which allows for broader, shared usage of data processing tools. A telemetry ping builder for pings of type “focus-event”.  
org.mozilla.telemetry.TelemetryHolder Holder of a static reference to the Telemetry instance. This is required for background services that somehow need to get access to the configuration and storage. This is not particular nice. Hopefully we can replace this with something better.  
org.mozilla.telemetry.measurement.TelemetryMeasurement A telemetry ping builder for events of type “mobile-event”. See the schema for more details: A telemetry ping builder for events of type “mobile-metrics”. See the schema for more details:    
org.mozilla.telemetry.serialize.TelemetryPingSerializer A telemetry ping builder for events of type “fire-tv-events”. See the schema for more details:  
android.os.StrictMode.ThreadPolicy (extensions in package    
mozilla.components.feature.session.ThumbnailsFeature Feature implementation for automatically taking thumbnails of sites. The feature will take a screenshot when the page finishes loading, and will add it to the Session.thumbnail property.  
mozilla.components.service.glean.private.TimeUnit Enumeration of different resolutions supported by the Timespan and TimingDistribution metric types.  
mozilla.components.service.glean.private.TimespanMetricType This implements the developer facing API for recording timespans.  
mozilla.components.service.glean.storages.TimingDistributionData This class represents the structure of a timing distribution according to the pipeline schema. It is meant to help serialize and deserialize data to the correct format for transport and storage, as well as including a helper function to calculate the bucket sizes.  
mozilla.components.service.glean.private.TimingDistributionMetricType This implements the developer facing API for recording timing distribution metrics.  
mozilla.components.lib.jexl.lexer.Token A token emitted by the Lexer.  
mozilla.components.concept.toolbar.Toolbar Interface to be implemented by components that provide browser toolbar functionality.  
mozilla.components.feature.toolbar.ToolbarAutocompleteFeature Feature implementation for connecting a toolbar with a list of autocomplete providers.  
mozilla.components.feature.toolbar.ToolbarFeature Feature implementation for connecting a toolbar implementation with the session module.  
mozilla.components.feature.toolbar.ToolbarInteractor Connects a toolbar instance to the browser engine via use cases  
mozilla.components.feature.toolbar.ToolbarPresenter Presenter implementation for a toolbar implementation in order to update the toolbar whenever the state of the selected session changes.  
mozilla.components.browser.engine.system.matcher.Trie Simple implementation of a Trie, used for indexing URLs.  
mozilla.appservices.fxaclient.Device.Type (extensions in package mozilla.components.service.fxa)    
mozilla.components.concept.engine.UnsupportedSettingException Exception thrown by default if a setting is not supported by an engine or session. (extensions in package    
mozilla.components.browser.engine.system.matcher.UrlMatcher Provides functionality to process categorized URL black/white lists and match URLs against these lists.  
mozilla.components.service.glean.private.UuidMetricType This implements the developer facing API for recording uuids.  
mozilla.components.service.fretboard.ValuesProvider Class used to provide custom filter values  
android.view.View (extensions in package Wrapper for LifecycleAwareFeature instances that keep a strong references to a View. This wrapper is helpful when the lifetime of the View may be shorter than the Lifecycle and you need to keep a reference to the LifecycleAwareFeature that may outlive the View.  
android.view.ViewGroup (extensions in package    
androidx.test.espresso.ViewInteraction (extensions in package Information about a history visit. Visit type constants as defined by Desktop Firefox.  
mozilla.components.feature.pwa.WebAppLauncherActivity This activity is launched by Web App shortcuts on the home screen.  
mozilla.components.browser.session.manifest.WebAppManifest The web app manifest provides information about an application (such as its name, author, icon, and description).  
mozilla.components.browser.session.manifest.WebAppManifestParser Parser for constructing a WebAppManifest from JSON.  
mozilla.components.concept.engine.webextension.WebExtension Represents a browser extension based on the WebExtension API: Regular expressions used in this class are taken from Android’s We brought them in to standardize URL matching across Android versions, instead of relying on Android version-dependent built-ins that can vary across Android versions. The original code can be found here:  
mozilla.components.feature.session.WindowFeature Feature implementation for handling window requests.  
mozilla.components.concept.engine.window.WindowRequest Represents a request to open or close a browser window.  
mozilla.components.service.fretboard.scheduler.workmanager.WorkManagerSyncScheduler Class used to schedule sync of experiment configuration from the server using WorkManager  
mozilla.components.feature.sync.WorkersLiveDataObserver A singleton wrapper around the the LiveData “forever” observer - i.e. an observer not bound to a lifecycle owner. This observer is always active. We will have different dispatcher instances throughout the lifetime of the app, but always a single LiveData instance.