mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
642 lines
25 KiB
Plaintext
642 lines
25 KiB
Plaintext
/* -*- Mode: IDL; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* The core XPConnect public interfaces. */
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#include "nsISupports.idl"
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#include "nsIClassInfo.idl"
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#include "xpccomponents.idl"
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#include "xpcjsid.idl"
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#include "xpcexception.idl"
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#include "nsIInterfaceInfo.idl"
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#include "nsIInterfaceInfoManager.idl"
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#include "nsIExceptionService.idl"
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#include "nsIVariant.idl"
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#include "nsIObjectOutputStream.idl"
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#include "nsIObjectInputStream.idl"
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%{ C++
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#include "jspubtd.h"
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#include "xptinfo.h"
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#include "nsAXPCNativeCallContext.h"
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class nsWrapperCache;
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%}
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/***************************************************************************/
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// NB: jsval and jsid are declared in nsIVariant.idl
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[ptr] native JSContextPtr(JSContext);
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[ptr] native JSClassPtr(JSClass);
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[ptr] native JSFreeOpPtr(JSFreeOp);
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[ptr] native JSObjectPtr(JSObject);
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[ptr] native JSValPtr(jsval);
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[ptr] native JSValConstPtr(const jsval);
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native JSPropertyOp(JSPropertyOp);
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native JSEqualityOp(JSEqualityOp);
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[ptr] native JSScriptPtr(JSScript);
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[ptr] native voidPtrPtr(void*);
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[ptr] native nsScriptObjectTracerPtr(nsScriptObjectTracer);
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[ref] native nsCCTraversalCallbackRef(nsCycleCollectionTraversalCallback);
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[ptr] native nsAXPCNativeCallContextPtr(nsAXPCNativeCallContext);
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[ptr] native nsWrapperCachePtr(nsWrapperCache);
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[ref] native JSCompartmentOptions(JS::CompartmentOptions);
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[ref] native JSCallArgsRef(const JS::CallArgs);
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native JSHandleId(JS::HandleId);
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/***************************************************************************/
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// forward declarations...
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interface nsIXPCScriptable;
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interface nsIXPConnect;
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interface nsIXPConnectWrappedNative;
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interface nsIInterfaceInfo;
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interface nsIXPCSecurityManager;
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interface nsIPrincipal;
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%{C++
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class nsCycleCollectionTraversalCallback;
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class nsScriptObjectTracer;
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%}
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/***************************************************************************/
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[uuid(909e8641-7c54-4dff-9b94-ba631f057b33)]
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interface nsIXPConnectJSObjectHolder : nsISupports
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{
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[notxpcom, nostdcall] JSObjectPtr GetJSObject();
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};
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[uuid(2d08015d-7556-4f12-9e89-4c756d129310)]
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interface nsIXPConnectWrappedNative : nsIXPConnectJSObjectHolder
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{
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/* attribute 'JSObject' inherited from nsIXPConnectJSObjectHolder */
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readonly attribute nsISupports Native;
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readonly attribute JSObjectPtr JSObjectPrototype;
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/**
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* These are here as an aid to nsIXPCScriptable implementors
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*/
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nsIInterfaceInfo FindInterfaceWithMember(in JSHandleId nameID);
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nsIInterfaceInfo FindInterfaceWithName(in JSHandleId nameID);
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[notxpcom] bool HasNativeMember(in JSHandleId name);
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void debugDump(in short depth);
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/*
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* This finishes initializing a wrapped global, doing the parts that we
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* couldn't do while the global and window were being simultaneously
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* bootstrapped. This should be called exactly once, and only for wrapped
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* globals.
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*/
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void finishInitForWrappedGlobal();
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/*
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* This returns a pointer into the instance and care should be taken
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* to make sure the pointer is not kept past the life time of the
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* object it points into.
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*/
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voidPtrPtr GetSecurityInfoAddress();
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/*
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* NOTE: Add new IDL methods _before_ the C++ block below if you
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* add them. Otherwise the vtable won't be what xpidl thinks it
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* is, since GetObjectPrincipal() is virtual.
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*/
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%{C++
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/**
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* Faster access to the native object from C++. Will never return null.
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*/
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nsISupports* Native() const { return mIdentity; }
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protected:
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nsISupports *mIdentity;
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public:
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%}
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};
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%{C++
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#include "nsCOMPtr.h"
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inline
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const nsQueryInterface
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do_QueryWrappedNative(nsIXPConnectWrappedNative *aWrappedNative)
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{
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return nsQueryInterface(aWrappedNative->Native());
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}
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inline
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const nsQueryInterfaceWithError
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do_QueryWrappedNative(nsIXPConnectWrappedNative *aWrappedNative,
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nsresult *aError)
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{
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return nsQueryInterfaceWithError(aWrappedNative->Native(), aError);
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}
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%}
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[uuid(BED52030-BCA6-11d2-BA79-00805F8A5DD7)]
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interface nsIXPConnectWrappedJS : nsIXPConnectJSObjectHolder
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{
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/* attribute 'JSObject' inherited from nsIXPConnectJSObjectHolder */
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readonly attribute nsIInterfaceInfo InterfaceInfo;
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readonly attribute nsIIDPtr InterfaceIID;
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void debugDump(in short depth);
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void aggregatedQueryInterface(in nsIIDRef uuid,
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[iid_is(uuid),retval] out nsQIResult result);
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};
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/***************************************************************************/
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/**
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* This is a sort of a placeholder interface. It is not intended to be
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* implemented. It exists to give the nsIXPCSecurityManager an iid on
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* which to gate a specific activity in XPConnect.
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*
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* That activity is...
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*
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* When JavaScript code uses a component that is itself implemented in
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* JavaScript then XPConnect will build a wrapper rather than directly
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* expose the JSObject of the component. This allows components implemented
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* in JavaScript to 'look' just like any other xpcom component (from the
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* perspective of the JavaScript caller). This insulates the component from
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* the caller and hides any properties or methods that are not part of the
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* interface as declared in xpidl. Usually this is a good thing.
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*
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* However, in some cases it is useful to allow the JS caller access to the
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* JS component's underlying implementation. In order to facilitate this
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* XPConnect supports the 'wrappedJSObject' property. The caller code can do:
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*
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* // 'foo' is some xpcom component (that might be implemented in JS).
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* try {
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* var bar = foo.wrappedJSObject;
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* if(bar) {
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* // bar is the underlying JSObject. Do stuff with it here.
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* }
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* } catch(e) {
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* // security exception?
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* }
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*
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* Recall that 'foo' above is an XPConnect wrapper, not the underlying JS
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* object. The property get "foo.wrappedJSObject" will only succeed if three
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* conditions are met:
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*
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* 1) 'foo' really is an XPConnect wrapper around a JSObject.
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* 2) The underlying JSObject actually implements a "wrappedJSObject"
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* property that returns a JSObject. This is called by XPConnect. This
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* restriction allows wrapped objects to only allow access to the underlying
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* JSObject if they choose to do so. Ususally this just means that 'foo'
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* would have a property tht looks like:
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* this.wrappedJSObject = this.
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* 3) The implemementation of nsIXPCSecurityManager (if installed) allows
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* a property get on the interface below. Although the JSObject need not
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* implement 'nsIXPCWrappedJSObjectGetter', XPConnect will ask the
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* security manager if it is OK for the caller to access the only method
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* in nsIXPCWrappedJSObjectGetter before allowing the activity. This fits
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* in with the security manager paradigm and makes control over accessing
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* the property on this interface the control factor for getting the
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* underlying wrapped JSObject of a JS component from JS code.
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*
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* Notes:
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*
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* a) If 'foo' above were the underlying JSObject and not a wrapper at all,
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* then this all just works and XPConnect is not part of the picture at all.
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* b) One might ask why 'foo' should not just implement an interface through
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* which callers might get at the underlying object. There are three reasons:
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* i) XPConnect would still have to do magic since JSObject is not a
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* scriptable type.
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* ii) JS Components might use aggregation (like C++ objects) and have
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* different JSObjects for different interfaces 'within' an aggregate
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* object. But, using an additional interface only allows returning one
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* underlying JSObject. However, this allows for the possibility that
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* each of the aggregte JSObjects could return something different.
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* Note that one might do: this.wrappedJSObject = someOtherObject;
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* iii) Avoiding the explicit interface makes it easier for both the caller
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* and the component.
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*
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* Anyway, some future implementation of nsIXPCSecurityManager might want
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* do special processing on 'nsIXPCSecurityManager::CanGetProperty' when
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* the interface id is that of nsIXPCWrappedJSObjectGetter.
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*/
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[scriptable, uuid(254bb2e0-6439-11d4-8fe0-0010a4e73d9a)]
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interface nsIXPCWrappedJSObjectGetter : nsISupports
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{
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readonly attribute nsISupports neverCalled;
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};
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/***************************************************************************/
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/*
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* This interface is implemented by outside code and registered with xpconnect
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* via nsIXPConnect::setFunctionThisTranslator.
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*
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* The reason this exists is to support calls to JavaScript event callbacks
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* needed by the DOM via xpconnect from C++ code.
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*
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* We've added support for wrapping JS function objects as xpcom interfaces
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* by declaring the given interface as a [function] interface. However, to
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* support the requirements of JS event callbacks we need to call the JS
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* function with the 'this' set as the JSObject for which the event is being
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* fired; e.g. a form node.
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*
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* We've decided that for all cases we care about the appropriate 'this' object
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* can be derived from the first param in the call to the callback. In the
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* event handler case the first param is an event object.
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*
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* Though we can't change all the JS code so that it would setup its own 'this',
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* we can add plugin 'helper' support to xpconnect. And that is what we have
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* here.
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*
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* The idea is that at startup time some code that cares about this issue
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* (e.g. the DOM helper code) can register a nsIXPCFunctionThisTranslator
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* object with xpconnect to handle calls to [function] interfaces of a given
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* iid. When xpconnect goes to invoke a method on a wrapped JSObject for
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* an interface marked as [function], xpconnect will check if the first param
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* of the method is an xpcom object pointer and if so it will check to see if a
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* nsIXPCFunctionThisTranslator has been registered for the given iid of the
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* interface being called. If so it will call the translator and get an
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* interface pointer to use as the 'this' for the call. If the translator
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* returns a non-null interface pointer (which it should then have addref'd
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* since it is being returned as an out param), xpconnect will attempt to build
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* a wrapper around the pointer and get a JSObject from that wrapper to use
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* as the 'this' for the call.
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*
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* If a null interface pointer is returned then xpconnect will use the default
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* 'this' - the same JSObject as the function object it is calling.
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*/
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[uuid(f5f84b70-92eb-41f1-a1dd-2eaac0ed564c)]
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interface nsIXPCFunctionThisTranslator : nsISupports
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{
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nsISupports TranslateThis(in nsISupports aInitialThis);
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};
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/***************************************************************************/
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%{ C++
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// For use with the service manager
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// {CB6593E0-F9B2-11d2-BDD6-000064657374}
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#define NS_XPCONNECT_CID \
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{ 0xcb6593e0, 0xf9b2, 0x11d2, \
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{ 0xbd, 0xd6, 0x0, 0x0, 0x64, 0x65, 0x73, 0x74 } }
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%}
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[uuid(0ebc00f0-f3ad-11e2-b778-0800200c9a66)]
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interface nsIXPConnect : nsISupports
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{
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%{ C++
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NS_DEFINE_STATIC_CID_ACCESSOR(NS_XPCONNECT_CID)
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%}
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/**
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* Initializes classes on a global object that has already been created.
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*/
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void
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initClasses(in JSContextPtr aJSContext,
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in JSObjectPtr aGlobalJSObj);
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/**
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* Creates a new global object using the given aCOMObj as the global
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* object. The object will be set up according to the flags (defined
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* below). If you do not pass INIT_JS_STANDARD_CLASSES, then aCOMObj
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* must implement nsIXPCScriptable so it can resolve the standard
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* classes when asked by the JS engine.
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*
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* @param aJSContext the context to use while creating the global object.
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* @param aCOMObj the native object that represents the global object.
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* @param aPrincipal the principal of the code that will run in this
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* compartment. Can be null if not on the main thread.
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* @param aFlags one of the flags below specifying what options this
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* global object wants.
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* @param aOptions JSAPI-specific options for the new compartment.
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*/
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nsIXPConnectJSObjectHolder
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initClassesWithNewWrappedGlobal(
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in JSContextPtr aJSContext,
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in nsISupports aCOMObj,
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in nsIPrincipal aPrincipal,
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in uint32_t aFlags,
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in JSCompartmentOptions aOptions);
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const uint32_t INIT_JS_STANDARD_CLASSES = 1 << 0;
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// Free bit here!
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const uint32_t OMIT_COMPONENTS_OBJECT = 1 << 2;
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/**
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* wrapNative will create a new JSObject or return an existing one.
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*
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* The JSObject is returned inside a refcounted nsIXPConnectJSObjectHolder.
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* As long as this holder is held the JSObject will be protected from
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* collection by JavaScript's garbage collector. It is a good idea to
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* transfer the JSObject to some equally protected place before releasing
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* the holder (i.e. use JS_SetProperty to make this object a property of
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* some other JSObject).
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*
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* This method now correctly deals with cases where the passed in xpcom
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* object already has an associated JSObject for the cases:
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* 1) The xpcom object has already been wrapped for use in the same scope
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* as an nsIXPConnectWrappedNative.
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* 2) The xpcom object is in fact a nsIXPConnectWrappedJS and thus already
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* has an underlying JSObject.
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*
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* It *might* be possible to QueryInterface the nsIXPConnectJSObjectHolder
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* returned by the method into a nsIXPConnectWrappedNative or a
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* nsIXPConnectWrappedJS.
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*
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* This method will never wrap the JSObject involved in an
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* XPCNativeWrapper before returning.
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*
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* Returns:
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* success:
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* NS_OK
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* failure:
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* NS_ERROR_XPC_BAD_CONVERT_NATIVE
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* NS_ERROR_XPC_CANT_GET_JSOBJECT_OF_DOM_OBJECT
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* NS_ERROR_FAILURE
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*/
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nsIXPConnectJSObjectHolder
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wrapNative(in JSContextPtr aJSContext,
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in JSObjectPtr aScope,
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in nsISupports aCOMObj,
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in nsIIDRef aIID);
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/**
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* Same as wrapNative, but also returns the JSObject in aVal. C++ callers
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* can pass in null for the aHolder argument, but in that case they must
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* ensure that aVal is rooted.
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* aIID may be null, it means the same as passing in
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* &NS_GET_IID(nsISupports) but when passing in null certain shortcuts
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* can be taken because we know without comparing IIDs that the caller is
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* asking for an nsISupports wrapper.
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* If aAllowWrapper, then the returned value will be wrapped in the proper
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* type of security wrapper on top of the XPCWrappedNative (if needed).
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* This method doesn't push aJSContext on the context stack, so the caller
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* is required to push it if the top of the context stack is not equal to
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* aJSContext.
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*/
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void
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wrapNativeToJSVal(in JSContextPtr aJSContext,
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in JSObjectPtr aScope,
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in nsISupports aCOMObj,
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in nsWrapperCachePtr aCache,
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in nsIIDPtr aIID,
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in boolean aAllowWrapper,
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out jsval aVal,
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out nsIXPConnectJSObjectHolder aHolder);
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/**
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* wrapJS will yield a new or previously existing xpcom interface pointer
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* to represent the JSObject passed in.
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*
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* This method now correctly deals with cases where the passed in JSObject
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* already has an associated xpcom interface for the cases:
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* 1) The JSObject has already been wrapped as a nsIXPConnectWrappedJS.
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* 2) The JSObject is in fact a nsIXPConnectWrappedNative and thus already
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* has an underlying xpcom object.
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* 3) The JSObject is of a jsclass which supports getting the nsISupports
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* from the JSObject directly. This is used for idlc style objects
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* (e.g. DOM objects).
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*
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* It *might* be possible to QueryInterface the resulting interface pointer
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* to nsIXPConnectWrappedJS.
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*
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* Returns:
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* success:
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* NS_OK
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* failure:
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* NS_ERROR_XPC_BAD_CONVERT_JS
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* NS_ERROR_FAILURE
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*/
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void
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wrapJS(in JSContextPtr aJSContext,
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in JSObjectPtr aJSObj,
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in nsIIDRef aIID,
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[iid_is(aIID),retval] out nsQIResult result);
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/**
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* Wraps the given jsval in a nsIVariant and returns the new variant.
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*/
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nsIVariant
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jSValToVariant(in JSContextPtr cx, in JSValPtr aJSVal);
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/**
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* This only succeeds if the JSObject is a nsIXPConnectWrappedNative.
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* A new wrapper is *never* constructed.
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*/
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nsIXPConnectWrappedNative
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getWrappedNativeOfJSObject(in JSContextPtr aJSContext,
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in JSObjectPtr aJSObj);
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[noscript, notxpcom] nsISupports
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getNativeOfWrapper(in JSContextPtr aJSContext,
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in JSObjectPtr aJSObj);
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/**
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* The security manager to use when the current JSContext has no security
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* manager.
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*/
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void setDefaultSecurityManager(in nsIXPCSecurityManager aManager);
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nsIStackFrame
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createStackFrameLocation(in uint32_t aLanguage,
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in string aFilename,
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in string aFunctionName,
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in int32_t aLineNumber,
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in nsIStackFrame aCaller);
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[noscript,notxpcom,nostdcall] JSContextPtr getCurrentJSContext();
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[noscript,notxpcom,nostdcall] JSContextPtr getSafeJSContext();
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readonly attribute nsIStackFrame CurrentJSStack;
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readonly attribute nsAXPCNativeCallContextPtr CurrentNativeCallContext;
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void debugDump(in short depth);
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void debugDumpObject(in nsISupports aCOMObj, in short depth);
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void debugDumpJSStack(in boolean showArgs,
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in boolean showLocals,
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in boolean showThisProps);
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void debugDumpEvalInJSStackFrame(in uint32_t aFrameNumber,
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in string aSourceText);
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/**
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* wrapJSAggregatedToNative is just like wrapJS except it is used in cases
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* where the JSObject is also aggregated to some native xpcom Object.
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* At present XBL is the only system that might want to do this.
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*
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* XXX write more!
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|
*
|
|
* Returns:
|
|
* success:
|
|
* NS_OK
|
|
* failure:
|
|
* NS_ERROR_XPC_BAD_CONVERT_JS
|
|
* NS_ERROR_FAILURE
|
|
*/
|
|
void
|
|
wrapJSAggregatedToNative(in nsISupports aOuter,
|
|
in JSContextPtr aJSContext,
|
|
in JSObjectPtr aJSObj,
|
|
in nsIIDRef aIID,
|
|
[iid_is(aIID),retval] out nsQIResult result);
|
|
|
|
// Methods added since mozilla 0.6....
|
|
|
|
/**
|
|
* This only succeeds if the native object is already wrapped by xpconnect.
|
|
* A new wrapper is *never* constructed.
|
|
*/
|
|
nsIXPConnectWrappedNative
|
|
getWrappedNativeOfNativeObject(in JSContextPtr aJSContext,
|
|
in JSObjectPtr aScope,
|
|
in nsISupports aCOMObj,
|
|
in nsIIDRef aIID);
|
|
|
|
void
|
|
setFunctionThisTranslator(in nsIIDRef aIID,
|
|
in nsIXPCFunctionThisTranslator aTranslator);
|
|
|
|
void
|
|
reparentWrappedNativeIfFound(in JSContextPtr aJSContext,
|
|
in JSObjectPtr aScope,
|
|
in JSObjectPtr aNewParent,
|
|
in nsISupports aCOMObj);
|
|
void
|
|
rescueOrphansInScope(in JSContextPtr aJSContext, in JSObjectPtr aScope);
|
|
|
|
void clearAllWrappedNativeSecurityPolicies();
|
|
|
|
nsIXPConnectJSObjectHolder
|
|
getWrappedNativePrototype(in JSContextPtr aJSContext,
|
|
in JSObjectPtr aScope,
|
|
in nsIClassInfo aClassInfo);
|
|
|
|
jsval variantToJS(in JSContextPtr ctx, in JSObjectPtr scope, in nsIVariant value);
|
|
nsIVariant JSToVariant(in JSContextPtr ctx, in jsval value);
|
|
|
|
/**
|
|
* Create a sandbox for evaluating code in isolation using
|
|
* evalInSandboxObject().
|
|
*
|
|
* @param cx A context to use when creating the sandbox object.
|
|
* @param principal The principal (or NULL to use the null principal)
|
|
* to use when evaluating code in this sandbox.
|
|
*/
|
|
[noscript] nsIXPConnectJSObjectHolder createSandbox(in JSContextPtr cx,
|
|
in nsIPrincipal principal);
|
|
|
|
/**
|
|
* Evaluate script in a sandbox, completely isolated from all
|
|
* other running scripts.
|
|
*
|
|
* @param source The source of the script to evaluate.
|
|
* @param filename The filename of the script. May be null.
|
|
* @param cx The context to use when setting up the evaluation of
|
|
* the script. The actual evaluation will happen on a new
|
|
* temporary context.
|
|
* @param sandbox The sandbox object to evaluate the script in.
|
|
* @param returnStringOnly The only results to come out of the
|
|
* computation (including exceptions) will
|
|
* be coerced into strings created in the
|
|
* sandbox.
|
|
* @return The result of the evaluation as a jsval. If the caller
|
|
* intends to use the return value from this call the caller
|
|
* is responsible for rooting the jsval before making a call
|
|
* to this method.
|
|
*/
|
|
[noscript] jsval evalInSandboxObject(in AString source, in string filename,
|
|
in JSContextPtr cx,
|
|
in JSObjectPtr sandbox,
|
|
in boolean returnStringOnly);
|
|
|
|
/**
|
|
* Note aJSContext as a child to the cycle collector.
|
|
* @param aJSContext The JSContext to note.
|
|
* @param aCb The cycle collection traversal callback.
|
|
*/
|
|
[noscript,notxpcom] void noteJSContext(in JSContextPtr aJSContext,
|
|
in nsCCTraversalCallbackRef aCb);
|
|
|
|
/**
|
|
* Whether or not XPConnect should report all JS exceptions when returning
|
|
* from JS into C++. False by default, although any value set in the
|
|
* MOZ_REPORT_ALL_JS_EXCEPTIONS environment variable will override the value
|
|
* passed here.
|
|
*/
|
|
void setReportAllJSExceptions(in boolean reportAllJSExceptions);
|
|
|
|
/**
|
|
* Trigger a JS garbage collection.
|
|
* Use a js::gcreason::Reason from jsfriendapi.h for the kind.
|
|
*/
|
|
void GarbageCollect(in uint32_t reason);
|
|
|
|
/**
|
|
* Signals a good place to do an incremental GC slice, because the
|
|
* browser is drawing a frame.
|
|
*/
|
|
void NotifyDidPaint();
|
|
|
|
%{C++
|
|
/**
|
|
* Get the object principal for this wrapper. Note that this may well end
|
|
* up being null; in that case one should seek principals elsewhere. Null
|
|
* here does NOT indicate system principal or no principals at all, just
|
|
* that this wrapper doesn't have an intrinsic one.
|
|
*/
|
|
virtual nsIPrincipal* GetPrincipal(JSObject* obj,
|
|
bool allowShortCircuit) const = 0;
|
|
virtual char* DebugPrintJSStack(bool showArgs,
|
|
bool showLocals,
|
|
bool showThisProps) = 0;
|
|
%}
|
|
|
|
/**
|
|
* Creates a JS object holder around aObject that will hold the object
|
|
* alive for as long as the holder stays alive.
|
|
*/
|
|
nsIXPConnectJSObjectHolder holdObject(in JSContextPtr aJSContext,
|
|
in JSObjectPtr aObject);
|
|
|
|
/**
|
|
* When we place the browser in JS debug mode, there can't be any
|
|
* JS on the stack. This is because we currently activate debugMode
|
|
* on all scripts in the JSRuntime when the debugger is activated.
|
|
* This method will turn debug mode on or off when the context
|
|
* stack reaches zero length.
|
|
*/
|
|
[noscript] void setDebugModeWhenPossible(in boolean mode,
|
|
in boolean allowSyncDisable);
|
|
|
|
[noscript] void writeScript(in nsIObjectOutputStream aStream,
|
|
in JSContextPtr aJSContext,
|
|
in JSScriptPtr aJSScript);
|
|
|
|
[noscript] JSScriptPtr readScript(in nsIObjectInputStream aStream,
|
|
in JSContextPtr aJSContext);
|
|
|
|
[noscript] void writeFunction(in nsIObjectOutputStream aStream,
|
|
in JSContextPtr aJSContext,
|
|
in JSObjectPtr aJSObject);
|
|
|
|
[noscript] JSObjectPtr readFunction(in nsIObjectInputStream aStream,
|
|
in JSContextPtr aJSContext);
|
|
|
|
/**
|
|
* This function should be called in JavaScript error reporters
|
|
* to signal that they are ignoring the error. In this case,
|
|
* XPConnect can print a warning to the console.
|
|
*/
|
|
[noscript] void markErrorUnreported(in JSContextPtr aJSContext);
|
|
};
|