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gecko-dev/js/xpconnect/idl/xpccomponents.idl

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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 nsIAddonInterposition;
interface nsIClassInfo;
interface nsIComponentManager;
interface nsICycleCollectorListener;
interface nsIJSCID;
interface nsIJSIID;
interface nsIPrincipal;
interface nsIStackFrame;
/**
* interface of Components.interfacesByID
* (interesting stuff only reflected into JavaScript)
*/
[scriptable, uuid(f235ef76-9919-478b-aa0f-282d994ddf76)]
interface nsIXPCComponents_InterfacesByID : nsISupports
{
};
/**
* interface of Components.interfaces
* (interesting stuff only reflected into JavaScript)
*/
[scriptable, uuid(b8c31bba-79db-4a1d-930d-4cdd68713f9e)]
interface nsIXPCComponents_Interfaces : nsISupports
{
};
/**
* interface of Components.classes
* (interesting stuff only reflected into JavaScript)
*/
[scriptable, uuid(978ff520-d26c-11d2-9842-006008962422)]
interface nsIXPCComponents_Classes : nsISupports
{
};
/**
* interface of Components.classesByID
* (interesting stuff only reflected into JavaScript)
*/
[scriptable, uuid(336a9590-4d19-11d3-9893-006008962422)]
interface nsIXPCComponents_ClassesByID : nsISupports
{
};
/**
* interface of Components.results
* (interesting stuff only reflected into JavaScript)
*/
[scriptable, uuid(2fc229a0-5860-11d3-9899-006008962422)]
interface nsIXPCComponents_Results : nsISupports
{
};
/**
* interface of Components.ID
* (interesting stuff only reflected into JavaScript)
*/
[scriptable, uuid(7994a6e0-e028-11d3-8f5d-0010a4e73d9a)]
interface nsIXPCComponents_ID : nsISupports
{
};
/**
* interface of Components.Exception
* (interesting stuff only reflected into JavaScript)
*/
[scriptable, uuid(5bf039c0-e028-11d3-8f5d-0010a4e73d9a)]
interface nsIXPCComponents_Exception : nsISupports
{
};
/**
* interface of Components.Constructor
* (interesting stuff only reflected into JavaScript)
*/
[scriptable, uuid(88655640-e028-11d3-8f5d-0010a4e73d9a)]
interface nsIXPCComponents_Constructor : nsISupports
{
};
/**
* interface of object returned by Components.Constructor
* (additional interesting stuff only reflected into JavaScript)
*/
[scriptable, uuid(c814ca20-e0dc-11d3-8f5f-0010a4e73d9a)]
interface nsIXPCConstructor : nsISupports
{
readonly attribute nsIJSCID classID;
readonly attribute nsIJSIID interfaceID;
readonly attribute string initializer;
};
/**
* interface of object returned by Components.utils.Sandbox.
*/
[scriptable, 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 ScheduledGCCallback : nsISupports
{
void callback();
};
/**
* interface of Components.utils
*/
[scriptable, uuid(1a9bcb85-67a9-4a22-89a2-40eaf7fc31ec)]
interface nsIXPCComponents_Utils : nsISupports
{
/* 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.
*/
[implicit_jscontext] void reportError(in jsval error);
readonly attribute nsIXPCComponents_utils_Sandbox Sandbox;
/*
* 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);
/*
* getSandboxAddonId is designed to be called from JavaScript only.
*
* getSandboxAddonId retrieves the add-on ID associated with
* a sandbox object. It will return undefined if there
* is no add-on ID attached to the sandbox.
*
* var s = C.u.Sandbox(..., { addonId: "123" });
* var id = C.u.getSandboxAddonId(s);
*/
[implicit_jscontext]
jsval getSandboxAddonId(in jsval sandbox);
/*
* 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.
*
* (This comment is duplicated from xpcIJSModuleLoader.)
*/
[implicit_jscontext,optional_argc]
jsval import(in AUTF8String aResourceURI, [optional] in jsval targetObj);
/**
* Returns true if the js file located at 'registryLocation' location has
* been loaded previously via the import method above. 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);
/*
* 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.
*/
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.
*
* 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.
*/
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 ScheduledGCCallback 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 ScheduledGCCallback 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();
/**
* Return the keys in a weak map. This operation is
* non-deterministic because it is affected by the scheduling of the
* garbage collector and the cycle collector.
*
* This should only be used to write tests of the interaction of
* the GC and CC with weak maps.
*
* @param aMap weak map or other JavaScript value
* @returns If aMap is a weak map object, return the keys of the weak
map as an array. Otherwise, return undefined.
*/
[implicit_jscontext]
jsval nondeterministicGetWeakMapKeys(in jsval aMap);
[implicit_jscontext]
jsval getJSTestingFunctions();
/*
* 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 object is a cross-process wrapper.
*/
bool isCrossProcessWrapper(in jsval obj);
/**
* CPOWs can have user data attached to them. This data originates
* in the local process via the
* nsIRemoteTagService.getRemoteObjectTag method. It's sent along
* with the CPOW to the remote process, where it can be fetched
* with this function, getCrossProcessWrapperTag.
*/
ACString getCrossProcessWrapperTag(in jsval obj);
/*
* 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.
*/
[implicit_jscontext]
void setWantXrays(in jsval vscope);
/*
* For gecko internal automation use only. Calling this in production code
* would result in security vulnerabilities, so it will crash if used outside
* of automation.
*/
[implicit_jscontext]
void forcePermissiveCOWs();
/*
* Disables the XPConnect security checks that deny access to callables and
* accessor descriptors on COWs. Do not use this unless you are bholley.
*
* For the benefit of his magesty TCPSocket while he takes his sweet time
* converting to WebIDL. See bug 885982.
*/
[implicit_jscontext]
void skipCOWCallableChecks();
/*
* Forces the usage of a privileged |Components| object for a potentially-
* unprivileged scope. This will crash if used outside of automation.
*/
[implicit_jscontext]
void forcePrivilegedComponentsForScope(in jsval vscope);
/*
* This seemingly-paradoxical API allows privileged code to explicitly give
* unprivileged code a reference to its own Components object (whereas it's
* normally hidden away on a scope chain visible only to XBL methods). See
* also SpecialPowers.getComponents.
*/
[implicit_jscontext]
jsval getComponentsForScope(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);
/*
* To be called from JS only.
*
* These are the set of JSContext options that privileged script
* is allowed to control for the purposes of testing. These
* options should be kept in sync with what's controllable in the
* jsshell and by setting prefs in nsJSEnvironment.
*
* NB: Assume that getting any of these attributes is relatively
* cheap, but setting any of them is relatively expensive.
*/
[implicit_jscontext]
attribute boolean strict;
[implicit_jscontext]
attribute boolean werror;
[implicit_jscontext]
attribute boolean strict_mode;
[implicit_jscontext]
attribute boolean ion;
[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 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);
/**
* Forces the generation of an XPCWrappedJS for a given object. For internal
* and testing use only. This is only useful to set up wrapper map conditions
* for a testcase. The return value is not an XPCWrappedJS itself, but an
* opaque nsISupports holder that keeps the underlying XPCWrappedJS alive.
*
* if |scope| is passed, the XPCWrappedJS is generated in the scope of that object.
*/
[implicit_jscontext]
nsISupports generateXPCWrappedJS(in jsval obj, [optional] in jsval scope);
/**
* Retrieve the last time, in microseconds since epoch, that a given
* watchdog-related event occured.
*
* Valid categories:
* "RuntimeStateChange" - Runtime 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
* compartment (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 getCompartmentLocation(in jsval obj);
[implicit_jscontext]
void setAddonInterposition(in ACString addonId, in nsIAddonInterposition interposition);
/*
* Return a fractional number of milliseconds from process
* startup, measured with a monotonic clock.
*/
double now();
};
/**
* Interface for the 'Components' object.
*
* The first interface contains things that are available to non-chrome XBL code
* that runs in a scope with an nsExpandedPrincipal. The second interface
* includes members that are only exposed to chrome.
*/
[scriptable, uuid(eeeada2f-86c0-4609-b2bf-4bf2351b1ce6)]
interface nsIXPCComponentsBase : nsISupports
{
readonly attribute nsIXPCComponents_Interfaces interfaces;
readonly attribute nsIXPCComponents_InterfacesByID interfacesByID;
readonly attribute nsIXPCComponents_Results results;
boolean isSuccessCode(in nsresult result);
};
[scriptable, uuid(aa28aaf6-70ce-4b03-9514-afe43c7dfda8)]
interface nsIXPCComponents : nsIXPCComponentsBase
{
readonly attribute nsIXPCComponents_Classes classes;
readonly attribute nsIXPCComponents_ClassesByID classesByID;
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]
readonly attribute jsval lastResult;
[implicit_jscontext]
// A javascript component can set |returnCode| to specify an nsresult to
// be returned without throwing an exception.
attribute jsval returnCode;
/* @deprecated Use Components.utils.reportError instead. */
[deprecated, implicit_jscontext] void reportError(in jsval error);
};
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