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+/* -*- Mode: IDL; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsISupports.idl"
+
+%{C++
+#include "jspubtd.h"
+%}
+
+interface xpcIJSWeakReference;
+interface nsIClassInfo;
+interface nsICommandParams;
+interface nsIComponentManager;
+interface nsICycleCollectorListener;
+interface nsIDocumentEncoder;
+interface nsIEditorSpellCheck;
+interface nsIFile;
+interface nsILoadContext;
+interface nsIPersistentProperties;
+interface nsIURI;
+interface nsIPrincipal;
+interface nsIStackFrame;
+webidl Element;
+
+/**
+* interface of Components.interfaces
+* (interesting stuff only reflected into JavaScript)
+*/
+[scriptable, builtinclass, uuid(b8c31bba-79db-4a1d-930d-4cdd68713f9e)]
+interface nsIXPCComponents_Interfaces : nsISupports
+{
+};
+
+/**
+* interface of Components.classes
+* (interesting stuff only reflected into JavaScript)
+*/
+[scriptable, builtinclass, uuid(978ff520-d26c-11d2-9842-006008962422)]
+interface nsIXPCComponents_Classes : nsISupports
+{
+};
+
+/**
+* interface of Components.results
+* (interesting stuff only reflected into JavaScript)
+*/
+[scriptable, builtinclass, uuid(2fc229a0-5860-11d3-9899-006008962422)]
+interface nsIXPCComponents_Results : nsISupports
+{
+};
+
+/**
+* interface of Components.ID
+* (interesting stuff only reflected into JavaScript)
+*/
+[scriptable, builtinclass, uuid(7994a6e0-e028-11d3-8f5d-0010a4e73d9a)]
+interface nsIXPCComponents_ID : nsISupports
+{
+};
+
+/**
+* interface of Components.Exception
+* (interesting stuff only reflected into JavaScript)
+*/
+[scriptable, builtinclass, uuid(5bf039c0-e028-11d3-8f5d-0010a4e73d9a)]
+interface nsIXPCComponents_Exception : nsISupports
+{
+};
+
+/**
+* interface of Components.Constructor
+* (interesting stuff only reflected into JavaScript)
+*/
+[scriptable, builtinclass, uuid(88655640-e028-11d3-8f5d-0010a4e73d9a)]
+interface nsIXPCComponents_Constructor : nsISupports
+{
+};
+
+/**
+* interface of object returned by Components.utils.Sandbox.
+*/
+[scriptable, builtinclass, uuid(4f8ae0dc-d266-4a32-875b-6a9de71a8ce9)]
+interface nsIXPCComponents_utils_Sandbox : nsISupports
+{
+};
+
+/**
+ * interface for callback to be passed to Cu.schedulePreciseGC
+ */
+[scriptable, function, uuid(71000535-b0fd-44d1-8ce0-909760e3953c)]
+interface nsIScheduledGCCallback : nsISupports
+{
+ void callback();
+};
+
+/**
+* interface of Components.utils
+*/
+[scriptable, builtinclass, uuid(86003fe3-ee9a-4620-91dc-eef8b1e58815)]
+interface nsIXPCComponents_Utils : nsISupports
+{
+ /*
+ * Prints the provided message to stderr.
+ */
+ void printStderr(in AUTF8String message);
+
+ /*
+ * reportError is designed to be called from JavaScript only.
+ *
+ * It will report a JS Error object to the JS console, and return. It
+ * is meant for use in exception handler blocks which want to "eat"
+ * an exception, but still want to report it to the console.
+ *
+ * It must be called with one param, usually an object which was caught by
+ * an exception handler. If it is not a JS error object, the parameter
+ * is converted to a string and reported as a new error.
+ *
+ * If called with two parameters, and the first parameter is not an
+ * object, the second parameter is used as the stack for the error report.
+ */
+ [implicit_jscontext]
+ void reportError(in jsval error, [optional] in jsval stack);
+
+
+ /**
+ * Cu.Sandbox is used to create a sandbox object
+ *
+ * let sandbox = Cu.Sandbox(principal[, options]);
+ *
+ * Using new Cu.Sandbox(...) to create a sandbox has the same effect as
+ * calling Cu.Sandbox(...) without new.
+ *
+ * In JS, Cu.Sandbox uses the following parameters:
+ *
+ * @param {Principal} principal
+ * The security principal defined for a sandbox determines what code
+ * running in that sandbox will be allowed to do. The principal may be one
+ * of four types: the system principal, a content principal, an expanded
+ * principal or a null principal. Depending on the principal type,
+ * this argument can be a nsIPrincipal, a Window, a String, an Array
+ * or null. See below.
+ * A content principal can be provided by passing a nsIPrincipal, a
+ * DOM Window, or a string URI (not recommended).
+ * An expanded (or extended) principal is an array of principals,
+ * where each item can be either a nsIPrincipal, a DOM window or a
+ * string URI.
+ * A null principal can either be specified by passing `null` or
+ * created explicitly with `Cc["@mozilla.org/nullprincipal;1"].createInstance(Ci.nsIPrincipal);`
+ * @param {Object} options
+ * Optional parameters, valid properties are:
+ * - allowWaivers: {Boolean} Allows the caller to waive Xrays, in case
+ * Xrays were used. Defaults to true.
+ * - discardSource: {Boolean} For certain globals, we know enough about
+ * the code that will run in them that we can discard script source
+ * entirely. A discarded source will be re-read when stringifying
+ * functions.
+ * Defaults to false.
+ * - forceSecureContext: {Boolean} Determines whether content windows and
+ * workers are marked as "Secure Context"s. If principal is the system
+ * principal, the value is forced to true. Otherwise defaults to false.
+ * - freshCompartment: {Boolean} Whether the sandbox should be created
+ * using a new compartment. Defaults to false.
+ * - freshZone: {Boolean} if true creates a new GC region separate from
+ * both the calling context's and the sandbox prototype's region.
+ * Defaults to false.
+ * - invisibleToDebugger: {Boolean} Whether this sandbox and its scripts
+ * can be accessed by the JavaScript Debugger.
+ * Defaults to false.
+ * - isWebExtensionContentScript: {Boolean} Whether this sandbox
+ * corresponds to a WebExtension content script, and should receive
+ * various bits of special compatibility behavior.
+ * Defaults to false.
+ * - metadata: {Object} Object to use as the metadata for the sandbox. See
+ * setSandboxMetadata.
+ * - originAttributes: {Object} Dictionary of origin attributes to use if
+ * the principal was provided as a string.
+ * - sameZoneAs: {Object} Javascript Object in whose garbage collection
+ * region the sandbox should be created. This helps to improve memory
+ * usage by allowing sandboxes to be discarded when that zone goes away.
+ * It also improves performance and memory usage by allowing strings
+ * to be passed between the compartments without copying or using
+ * wrappers.
+ * Content scripts should pass the window they're running in as this
+ * parameter, in order to ensure that the script is cleaned up at the
+ * same time as the content itself.
+ * - sandboxName: {String} Identifies the sandbox in about:memory. This
+ * property is optional, but very useful for tracking memory usage. A
+ * recommended value for this property is an absolute path to the script
+ * responsible for creating the sandbox. If you don't specify a sandbox
+ * name it will default to the caller's filename.
+ * - sandboxPrototype: {Object} Prototype object for the sandbox. The
+ * sandbox will inherit the contents of this object if it's provided.
+ * Passing a content window object, setting wantXrays:true (default) and
+ * using an extended principal provides a clean, isolated execution
+ * environment in which javascript code that needs Web APIs (such as
+ * accessing the window's DOM) can be executed without interference from
+ * untrusted content code.
+ * - userContextId: {Number} The id of the user context this sandbox is
+ * inside. Defaults to 0.
+ * - wantComponents: {Boolean} Indicates whether the Components object is
+ * available or not in the sandbox. If the sandbox interacts with
+ * untrusted content this should be set to false when possible to
+ * further reduce possible attack surface.
+ * Defaults to true.
+ * - wantExportHelpers: {Boolean} if true, then createObjectIn(),
+ * evalInWindow(), and exportFunction() are available in the sandbox.
+ * Defaults to false.
+ * - wantGlobalProperties: {Array<String>} Each string is the name of an
+ * object that you want to make available as a global to code running in
+ * the sandbox. Possible values: Blob, ChromeUtils, CSS, CSSRule,
+ * Directory, DOMParser, Element, Event, File, FileReader, FormData,
+ * InspectorUtils, MessageChannel, Node, NodeFilter, PromiseDebugging,
+ * TextDecoder, TextEncoder, URL, URLSearchParams, XMLHttpRequest,
+ * XMLSerializer, atob, btoa, caches, crypto, fetch, indexedDB,
+ * rtcIdentityProvider
+ * - wantXrays: {Boolean} Whether the sandbox wants Xray vision with
+ * respect to same-origin objects outside the sandbox.
+ * Note that wantXrays is essentially deprecated. The preferred method
+ * of handling this now is to give the sandbox an expanded principal
+ * which inherits from the principal of the content compartment the
+ * sandbox will interact with. That lets the sandbox see the content
+ * compartment through X-ray wrappers, and gives any object passed from
+ * the sandbox to the content compartment opaque security wrappers unless
+ * export helpers are explicitly used.
+ * "Xray vision" is exactly the same Xray behavior that script always
+ * gets, by default, when working with DOM objects across origin
+ * boundaries. This is primarily visible for chrome code accessing
+ * content. However, it also occurs during cross-origin access between
+ * two content pages, since each page sees a "vanilla" view of the
+ * other. The protection is bidirectional: the caller sees the bonafide
+ * DOM objects without being confused by sneakily-redefined properties,
+ * and the target receives appropriate privacy from having its expandos
+ * inspected by untrusted callers. In situations where only
+ * unidirectional protection is needed, callers have the option to waive
+ * the X-ray behavior using wrappedJSObject or XPCNativeWrapper.unwrap().
+ * In general, when accessing same-origin content, script gets a
+ * Transparent wrapper rather than an Xray wrapper. However, sandboxes
+ * are often used when chrome wants to run script as another origin,
+ * possibly to interact with the page. In this case, same-origin Xrays
+ * are desirable, and wantXrays should be set to true.
+ * Defaults to true.
+ */
+ readonly attribute nsIXPCComponents_utils_Sandbox Sandbox;
+
+ [implicit_jscontext]
+ jsval createServicesCache();
+
+ /*
+ * evalInSandbox is designed to be called from JavaScript only.
+ *
+ * evalInSandbox evaluates the provided source string in the given sandbox.
+ * It returns the result of the evaluation to the caller.
+ *
+ * var s = new C.u.Sandbox("http://www.mozilla.org");
+ * var res = C.u.evalInSandbox("var five = 5; 2 + five", s);
+ * var outerFive = s.five;
+ * s.seven = res;
+ * var thirtyFive = C.u.evalInSandbox("five * seven", s);
+ */
+ [implicit_jscontext,optional_argc]
+ jsval evalInSandbox(in AString source, in jsval sandbox,
+ [optional] in jsval version,
+ [optional] in AUTF8String filename,
+ [optional] in long lineNo,
+ [optional] in bool enforceFilenameRestrictions);
+
+ /*
+ * Get the sandbox for running JS-implemented UA widgets (video controls etc.),
+ * hosted inside UA-created Shadow DOM.
+ */
+ [implicit_jscontext]
+ jsval getUAWidgetScope(in nsIPrincipal principal);
+
+ /*
+ * getSandboxMetadata is designed to be called from JavaScript only.
+ *
+ * getSandboxMetadata retrieves the metadata associated with
+ * a sandbox object. It will return undefined if there
+ * is no metadata attached to the sandbox.
+ *
+ * var s = C.u.Sandbox(..., { metadata: "metadata" });
+ * var metadata = C.u.getSandboxMetadata(s);
+ */
+ [implicit_jscontext]
+ jsval getSandboxMetadata(in jsval sandbox);
+
+ /*
+ * setSandboxMetadata is designed to be called from JavaScript only.
+ *
+ * setSandboxMetadata sets the metadata associated with
+ * a sandbox object.
+ *
+ * Note that the metadata object will be copied before being used.
+ * The copy will be performed using the structured clone algorithm.
+ * Note that this algorithm does not support reflectors and
+ * it will throw if it encounters them.
+ */
+ [implicit_jscontext]
+ void setSandboxMetadata(in jsval sandbox, in jsval metadata);
+
+ /*
+ * import is designed to be called from JavaScript only.
+ *
+ * Synchronously loads and evaluates the js file located at
+ * 'registryLocation' with a new, fully privileged global object.
+ *
+ * If 'targetObj' is specified and equal to null, returns the
+ * module's global object. Otherwise (if 'targetObj' is not
+ * specified, or 'targetObj' is != null) looks for a property
+ * 'EXPORTED_SYMBOLS' on the new global object. 'EXPORTED_SYMBOLS'
+ * is expected to be an array of strings identifying properties on
+ * the global object. These properties will be installed as
+ * properties on 'targetObj', or, if 'targetObj' is not specified,
+ * on the caller's global object. If 'EXPORTED_SYMBOLS' is not
+ * found, an error is thrown.
+ *
+ * @param resourceURI A resource:// URI string to load the module from.
+ * @param targetObj the object to install the exported properties on.
+ * If this parameter is a primitive value, this method throws
+ * an exception.
+ * @returns the module code's global object.
+ *
+ * The implementation maintains a hash of registryLocation->global obj.
+ * Subsequent invocations of importModule with 'registryLocation'
+ * pointing to the same file will not cause the module to be re-evaluated,
+ * but the symbols in EXPORTED_SYMBOLS will be exported into the
+ * specified target object and the global object returned as above.
+ */
+ [implicit_jscontext,optional_argc]
+ jsval import(in AUTF8String aResourceURI, [optional] in jsval targetObj);
+
+ /**
+ * Returns true if the JSM is loaded into the system global previously via
+ * the import method above, or corresponding ESM is loaded. Returns false
+ * otherwise.
+ *
+ * @param resourceURI A resource:// URI string representing the location of
+ * the js file to be checked if it is already loaded or not.
+ * @returns boolean, true if the js file has been loaded via import. false
+ * otherwise
+ */
+ boolean isModuleLoaded(in AUTF8String aResourceURI);
+
+
+ /**
+ * Returns true if the JSM is loaded into the system global previously via
+ * the import method above. Returns false otherwise.
+ */
+ boolean isJSModuleLoaded(in AUTF8String aResourceURI);
+
+ /**
+ * Returns true if the ESM is loaded into the system global previously via
+ * the ChromeUtils.importESModule method etc. Returns false otherwise.
+ */
+ boolean isESModuleLoaded(in AUTF8String aResourceURI);
+
+ /*
+ * Unloads the JS module at 'registryLocation'. Existing references to the
+ * module will continue to work but any subsequent import of the module will
+ * reload it and give new reference. If the JS module hasn't yet been
+ * imported then this method will do nothing.
+ *
+ * @param resourceURI A resource:// URI string to unload the module from.
+ */
+ void unload(in AUTF8String registryLocation);
+
+ /*
+ * Imports global properties (like DOM constructors) into the scope, defining
+ * them on the caller's global. aPropertyList should be an array of property
+ * names.
+ *
+ * See xpc::GlobalProperties::Parse for the current list of supported
+ * properties.
+ */
+ [implicit_jscontext]
+ void importGlobalProperties(in jsval aPropertyList);
+
+ /*
+ * To be called from JS only.
+ *
+ * Return a weak reference for the given JS object.
+ */
+ [implicit_jscontext]
+ xpcIJSWeakReference getWeakReference(in jsval obj);
+
+ /*
+ * To be called from JS only.
+ *
+ * Force an immediate garbage collection cycle.
+ */
+ [implicit_jscontext]
+ void forceGC();
+
+ /*
+ * To be called from JS only.
+ *
+ * Force an immediate cycle collection cycle.
+ */
+ void forceCC([optional] in nsICycleCollectorListener aListener);
+
+ /*
+ * To be called from JS only. C++ callers should use the
+ * nsCycleCollector_createLogger() function instead.
+ *
+ * Create an instance of the built-in cycle collector logger object.
+ */
+ nsICycleCollectorListener createCCLogger();
+
+ /*
+ * To be called from JS only.
+ *
+ * If any incremental CC is in progress, finish it. For testing.
+ */
+ void finishCC();
+
+ /*
+ * To be called from JS only.
+ *
+ * Do some cycle collector work, with the given work budget.
+ * The cost of calling Traverse() on a single object is set as 1.
+ * For testing.
+ */
+ void ccSlice(in long long budget);
+
+ /*
+ * To be called from JS only.
+ *
+ * Return the longest cycle collector slice time since the last
+ * time clearMaxCCTime() was called.
+ */
+ long getMaxCCSliceTimeSinceClear();
+
+ /*
+ * To be called from JS only.
+ *
+ * Reset the internal max slice time value used for
+ * getMaxCCSliceTimeSinceClear().
+ */
+ void clearMaxCCTime();
+
+ /*
+ * To be called from JS only.
+ *
+ * Force an immediate shrinking garbage collection cycle.
+ */
+ [implicit_jscontext]
+ void forceShrinkingGC();
+
+ /*
+ * Schedule a garbage collection cycle for a point in the future when no JS
+ * is running. Call the provided function once this has occurred.
+ */
+ void schedulePreciseGC(in nsIScheduledGCCallback callback);
+
+ /*
+ * Schedule a shrinking garbage collection cycle for a point in the future
+ * when no JS is running. Call the provided function once this has occured.
+ */
+ void schedulePreciseShrinkingGC(in nsIScheduledGCCallback callback);
+
+ /*
+ * In a debug build, unlink any ghost windows. This is only for debugging
+ * leaks, and can cause bad things to happen if called.
+ */
+ void unlinkGhostWindows();
+
+ /*
+ * In an NS_FREE_PERMANENT_DATA build, intentionally leak a C++ object. This
+ * is needed to test leak checking.
+ */
+ void intentionallyLeak();
+
+ [implicit_jscontext]
+ jsval getJSTestingFunctions();
+
+ /**
+ * Returns an object containing `filename` and `lineNumber` properties
+ * describing the source location of the given function.
+ */
+ [implicit_jscontext]
+ jsval getFunctionSourceLocation(in jsval func);
+
+ /*
+ * To be called from JS only.
+ *
+ * Call 'function', using the provided stack as the async stack responsible
+ * for the call, and propagate its return value or the exception it throws.
+ * The function is called with no arguments, and 'this' is 'undefined'.
+ *
+ * The code in the function will see the given stack frame as the
+ * asyncCaller of its own stack frame, instead of the current caller.
+ */
+ [implicit_jscontext]
+ jsval callFunctionWithAsyncStack(in jsval function, in nsIStackFrame stack,
+ in AString asyncCause);
+
+ /*
+ * To be called from JS only.
+ *
+ * Returns the global object with which the given object is associated.
+ *
+ * @param obj The JavaScript object whose global is to be gotten.
+ * @return the corresponding global.
+ */
+ [implicit_jscontext]
+ jsval getGlobalForObject(in jsval obj);
+
+ /*
+ * To be called from JS only.
+ *
+ * Returns the true if the object is a (scripted) proxy.
+ * NOTE: Security wrappers are unwrapped first before the check.
+ */
+ [implicit_jscontext]
+ boolean isProxy(in jsval vobject);
+
+ /*
+ * To be called from JS only.
+ *
+ * Instead of simply wrapping a function into another compartment,
+ * this helper function creates a native function in the target
+ * compartment and forwards the call to the original function.
+ * That call will be different than a regular JS function call in
+ * that, the |this| is left unbound, and all the non-native JS
+ * object arguments will be cloned using the structured clone
+ * algorithm.
+ * The return value is the new forwarder function, wrapped into
+ * the caller's compartment.
+ * The 3rd argument is an optional options object:
+ * - defineAs: the name of the property that will
+ * be set on the target scope, with
+ * the forwarder function as the value.
+ */
+ [implicit_jscontext]
+ jsval exportFunction(in jsval vfunction, in jsval vscope, [optional] in jsval voptions);
+
+ /*
+ * To be called from JS only.
+ *
+ * Returns an object created in |vobj|'s compartment.
+ * If defineAs property on the options object is a non-null ID,
+ * the new object will be added to vobj as a property. Also, the
+ * returned new object is always automatically waived (see waiveXrays).
+ */
+ [implicit_jscontext]
+ jsval createObjectIn(in jsval vobj, [optional] in jsval voptions);
+
+ /*
+ * To be called from JS only.
+ *
+ * Ensures that all functions come from vobj's scope (and aren't cross
+ * compartment wrappers).
+ */
+ [implicit_jscontext]
+ void makeObjectPropsNormal(in jsval vobj);
+
+ /**
+ * Determines whether this object is backed by a DeadObjectProxy.
+ *
+ * Dead-wrapper objects hold no other objects alive (they have no outgoing
+ * reference edges) and will throw if you touch them (e.g. by
+ * reading/writing a property).
+ */
+ bool isDeadWrapper(in jsval obj);
+
+ /**
+ * Determines whether this value is a remote object proxy, such as
+ * RemoteWindowProxy or RemoteLocationProxy, for an out-of-process frame.
+ *
+ * Remote object proxies do not grant chrome callers the same exemptions
+ * to the same-origin-policy that in-process wrappers typically do, so
+ * this can be used to determine whether access to cross-origin proxies is
+ * safe:
+ *
+ * if (!Cu.isRemoteProxy(frame.contentWindow)) {
+ * frame.contentWindow.doCrossOriginThing();
+ * }
+ */
+ bool isRemoteProxy(in jsval val);
+
+ /*
+ * To be called from JS only. This is for Gecko internal use only, and may
+ * disappear at any moment.
+ *
+ * Forces a recomputation of all wrappers in and out of the compartment
+ * containing |vobj|. If |vobj| is not an object, all wrappers system-wide
+ * are recomputed.
+ */
+ [implicit_jscontext]
+ void recomputeWrappers([optional] in jsval vobj);
+
+ /*
+ * To be called from JS only. This is for Gecko internal use only, and may
+ * disappear at any moment.
+ *
+ * Enables Xray vision for same-compartment access for the compartment
+ * indicated by |vscope|. All outgoing wrappers are recomputed.
+ *
+ * This must not be called on chrome (system-principal) scopes.
+ */
+ [implicit_jscontext]
+ void setWantXrays(in jsval vscope);
+
+ /*
+ * Dispatches a runnable to the current/main thread. If |scope| is passed,
+ * the runnable will be dispatch in the compartment of |scope|, which
+ * affects which error reporter gets called.
+ */
+ [implicit_jscontext]
+ void dispatch(in jsval runnable, [optional] in jsval scope);
+
+ /*
+ * Bug 1621603 - Remove strict_mode.
+ *
+ * Do not use this API! Instead use "use strict"; at the top of your JS
+ * file.
+ */
+ [implicit_jscontext]
+ attribute boolean strict_mode;
+
+ // Returns true if we're running in automation and certain security
+ // restrictions can be eased.
+ readonly attribute boolean isInAutomation;
+
+ // Called by automated tests to exit immediately after we are done getting
+ // test results.
+ void exitIfInAutomation();
+
+ void crashIfNotInAutomation();
+
+ [implicit_jscontext]
+ void setGCZeal(in long zeal);
+
+ [implicit_jscontext]
+ void nukeSandbox(in jsval obj);
+
+ /*
+ * API to dynamically block script for a given global. This takes effect
+ * immediately, unlike other APIs that only affect newly-created globals.
+ *
+ * The machinery here maintains a counter, and allows script only if each
+ * call to blockScriptForGlobal() has been matched with a call to
+ * unblockScriptForGlobal(). The caller _must_ make sure never to call
+ * unblock() more times than it calls block(), since that could potentially
+ * interfere with another consumer's script blocking.
+ */
+
+ [implicit_jscontext]
+ void blockScriptForGlobal(in jsval global);
+
+ [implicit_jscontext]
+ void unblockScriptForGlobal(in jsval global);
+
+ /**
+ * Check whether the given object is an opaque wrapper (PermissiveXrayOpaque).
+ */
+ bool isOpaqueWrapper(in jsval obj);
+
+ /**
+ * Check whether the given object is an XrayWrapper.
+ */
+ bool isXrayWrapper(in jsval obj);
+
+ /**
+ * Waive Xray on a given value. Identity op for primitives.
+ */
+ [implicit_jscontext]
+ jsval waiveXrays(in jsval aVal);
+
+ /**
+ * Strip off Xray waivers on a given value. Identity op for primitives.
+ */
+ [implicit_jscontext]
+ jsval unwaiveXrays(in jsval aVal);
+
+ /**
+ * Gets the name of the JSClass of the object.
+ *
+ * if |aUnwrap| is true, all wrappers are unwrapped first. Unless you're
+ * specifically trying to detect whether the object is a proxy, this is
+ * probably what you want.
+ */
+ [implicit_jscontext]
+ string getClassName(in jsval aObj, in bool aUnwrap);
+
+ /**
+ * Get a DOM classinfo for the given classname. Only some class
+ * names are supported.
+ */
+ nsIClassInfo getDOMClassInfo(in AString aClassName);
+
+ /**
+ * Gets the incument global for the execution of this function. For internal
+ * and testing use only.
+ *
+ * If |callback| is passed, it is invoked with the incumbent global as its
+ * sole argument. This allows the incumbent global to be measured in callback
+ * environments with no scripted frames on the stack.
+ */
+ [implicit_jscontext]
+ jsval getIncumbentGlobal([optional] in jsval callback);
+
+ /**
+ * Returns a name for the given function or object which is useful for
+ * debugging. It will be very similar to the name displayed in call
+ * stacks.
+
+ * Objects which contain a single enumerable property which is a function
+ * will generate a name based on that function. Any other non-function
+ * objects will return "nonfunction".
+ */
+ [implicit_jscontext]
+ ACString getDebugName(in jsval obj);
+
+ /**
+ * Retrieve the last time, in microseconds since epoch, that a given
+ * watchdog-related event occured.
+ *
+ * Valid categories:
+ * "ContextStateChange" - Context switching between active and inactive states
+ * "WatchdogWakeup" - Watchdog waking up from sleeping
+ * "WatchdogHibernateStart" - Watchdog begins hibernating
+ * "WatchdogHibernateStop" - Watchdog stops hibernating
+ */
+ PRTime getWatchdogTimestamp(in AString aCategory);
+
+ [implicit_jscontext]
+ jsval getJSEngineTelemetryValue();
+
+ /*
+ * Clone an object into a scope.
+ * The 3rd argument is an optional options object:
+ * - cloneFunctions: boolean. If true, functions in the value are
+ * wrapped in a function forwarder that appears to be a native function in
+ * the content scope. Defaults to false.
+ * - wrapReflectors: boolean. If true, DOM objects are passed through the
+ * clone directly with cross-compartment wrappers. Otherwise, the clone
+ * fails when such an object is encountered. Defaults to false.
+ */
+ [implicit_jscontext]
+ jsval cloneInto(in jsval value, in jsval scope, [optional] in jsval options);
+
+ /*
+ * When C++-Implemented code does security checks, it can generally query
+ * the subject principal (i.e. the principal of the most-recently-executed
+ * script) in order to determine the responsible party. However, when an API
+ * is implemented in JS, this doesn't work - the most-recently-executed
+ * script is always the System-Principaled API implementation. So we need
+ * another mechanism.
+ *
+ * Hence the notion of the "WebIDL Caller". If the current Entry Script on
+ * the Script Settings Stack represents the invocation of JS-implemented
+ * WebIDL, this API returns the principal of the caller at the time
+ * of invocation. Otherwise (i.e. outside of JS-implemented WebIDL), this
+ * function throws. If it throws, you probably shouldn't be using it.
+ */
+ nsIPrincipal getWebIDLCallerPrincipal();
+
+ /*
+ * Gets the principal of a script object, after unwrapping any cross-
+ * compartment wrappers.
+ */
+ [implicit_jscontext]
+ nsIPrincipal getObjectPrincipal(in jsval obj);
+
+ /*
+ * Gets the URI or identifier string associated with an object's
+ * realm (the same one used by the memory reporter machinery).
+ *
+ * Unwraps cross-compartment wrappers first.
+ *
+ * The string formats and values may change at any time. Do not depend on
+ * this from addon code.
+ */
+ [implicit_jscontext]
+ ACString getRealmLocation(in jsval obj);
+
+ /*
+ * Return a fractional number of milliseconds from process
+ * startup, measured with a monotonic clock.
+ */
+ double now();
+
+ /*
+ * Reads the given file and returns its contents. If called during early
+ * startup, the file will be pre-read on a background thread during profile
+ * startup so its contents will be available the next time they're read.
+ *
+ * The file must be a text file encoded in UTF-8. Otherwise the result is
+ * undefined.
+ */
+ AUTF8String readUTF8File(in nsIFile file);
+
+ /*
+ * Reads the given local file URL and returns its contents. This has the
+ * same semantics of readUTF8File.
+ * Only supports file URLs or URLs that point into one of the omnijars.
+ */
+ AUTF8String readUTF8URI(in nsIURI url);
+
+ /* Create a spellchecker object. */
+ nsIEditorSpellCheck createSpellChecker();
+
+ /* Create a commandline object.
+ *
+ * @return a new `nsICommandLine` instance.
+ *
+ * @param args
+ * The arguments of the command line, not including the app/program itself.
+ * @param workingDir
+ * An optional working directory for the command line.
+ * @param state
+ * The command line's state, one of `nsICommandLine.STATE_INITIAL_LAUNCH`,
+ * `nsICommandLine.STATE_REMOTE_AUTO`, or
+ * `nsICommandLine.STATE_REMOTE_EXPLICIT`.
+ */
+ nsISupports createCommandLine(in Array<ACString> args,
+ in nsIFile workingDir,
+ in unsigned long state);
+
+ /* Create a command params object. */
+ nsICommandParams createCommandParams();
+
+ /* Create a loadcontext object. */
+ nsILoadContext createLoadContext();
+
+ /* Create a private loadcontext object. */
+ nsILoadContext createPrivateLoadContext();
+
+ /* Create a persistent property object. */
+ nsIPersistentProperties createPersistentProperties();
+
+ /* Create a document encoder object. */
+ nsIDocumentEncoder createDocumentEncoder(in string contentType);
+
+ /* Create an HTML copy encoder object. */
+ nsIDocumentEncoder createHTMLCopyEncoder();
+
+ // These attributes are for startup testing purposes. They are not expected
+ // to be used for production code.
+
+ // Array of the URI of JSM and ESM loaded, converting ESM URI into JSM URI.
+ readonly attribute Array<ACString> loadedModules;
+
+ // Array of the URI of JSM loaded.
+ readonly attribute Array<ACString> loadedJSModules;
+
+ // Array of the URI of ESM loaded.
+ readonly attribute Array<ACString> loadedESModules;
+
+
+ // This function will only return useful values if the
+ // "browser.startup.record" preference was true at the time the JS file
+ // was loaded.
+ ACString getModuleImportStack(in AUTF8String aLocation);
+};
+
+/**
+* Interface for the 'Components' object.
+*/
+
+[scriptable, builtinclass, uuid(aa28aaf6-70ce-4b03-9514-afe43c7dfda8)]
+interface nsIXPCComponents : nsISupports
+{
+ readonly attribute nsIXPCComponents_Interfaces interfaces;
+ readonly attribute nsIXPCComponents_Results results;
+
+ boolean isSuccessCode(in nsresult result);
+
+ readonly attribute nsIXPCComponents_Classes classes;
+ // Will return null if there is no JS stack right now.
+ readonly attribute nsIStackFrame stack;
+ readonly attribute nsIComponentManager manager;
+ readonly attribute nsIXPCComponents_Utils utils;
+
+ readonly attribute nsIXPCComponents_ID ID;
+ readonly attribute nsIXPCComponents_Exception Exception;
+ readonly attribute nsIXPCComponents_Constructor Constructor;
+
+ [implicit_jscontext]
+ // A javascript component can set |returnCode| to specify an nsresult to
+ // be returned without throwing an exception.
+ attribute jsval returnCode;
+};