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

/* -*- Mode: C; 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"
#include "nsIClassInfo.idl"

%{C++
#ifdef XP_WIN
#undef GetClassName
#endif

#include "js/TypeDecls.h"

struct JSFreeOp;
%}

interface nsIXPConnectWrappedNative;

[ptr] native JSContextPtr(JSContext);
[ptr] native JSObjectPtr(JSObject);
[ptr] native JSValPtr(JS::Value);
[ptr] native JSFreeOpPtr(JSFreeOp);
[ref] native JSCallArgsRef(const JS::CallArgs);
[ref] native JSAutoIdVector(JS::AutoIdVector);

/**
 * Note: This is not really an XPCOM interface.  For example, callers must
 * guarantee that they set the *_retval of the various methods that return a
 * boolean to PR_TRUE before making the call.  Implementations may skip writing
 * to *_retval unless they want to return PR_FALSE.
 */
[uuid(19b70b26-7c3f-437f-a04a-2a8f9e28b617)]
interface nsIXPCScriptable : nsISupports
{
    /* bitflags used for 'flags' (only 32 bits available!) */

    const uint32_t WANT_PRECREATE                   = 1 <<  0;
    // unused bit here
    // unused bit here
    const uint32_t WANT_ADDPROPERTY                 = 1 <<  3;
    // unused bit here
    const uint32_t WANT_GETPROPERTY                 = 1 <<  5;
    const uint32_t WANT_SETPROPERTY                 = 1 <<  6;
    const uint32_t WANT_ENUMERATE                   = 1 <<  7;
    const uint32_t WANT_NEWENUMERATE                = 1 <<  8;
    const uint32_t WANT_RESOLVE                     = 1 <<  9;
    // unused bit here
    const uint32_t WANT_FINALIZE                    = 1 << 11;
    // unused bit here!
    const uint32_t WANT_CALL                        = 1 << 13;
    const uint32_t WANT_CONSTRUCT                   = 1 << 14;
    const uint32_t WANT_HASINSTANCE                 = 1 << 15;
    // Unused bit here!
    const uint32_t USE_JSSTUB_FOR_ADDPROPERTY       = 1 << 17;
    const uint32_t USE_JSSTUB_FOR_DELPROPERTY       = 1 << 18;
    const uint32_t USE_JSSTUB_FOR_SETPROPERTY       = 1 << 19;
    // Unused bit here!
    const uint32_t DONT_ENUM_QUERY_INTERFACE        = 1 << 21;
    const uint32_t DONT_ASK_INSTANCE_FOR_SCRIPTABLE = 1 << 22;
    const uint32_t CLASSINFO_INTERFACES_ONLY        = 1 << 23;
    const uint32_t ALLOW_PROP_MODS_DURING_RESOLVE   = 1 << 24;
    const uint32_t ALLOW_PROP_MODS_TO_PROTOTYPE     = 1 << 25;
    const uint32_t IS_GLOBAL_OBJECT                 = 1 << 26;
    const uint32_t DONT_REFLECT_INTERFACE_NAMES     = 1 << 27;

    // The high order bit is RESERVED for consumers of these flags. 
    // No implementor of this interface should ever return flags 
    // with this bit set.
    const uint32_t RESERVED                         = 1 << 31;

    readonly attribute string   className;
    [notxpcom,nostdcall] uint32_t getScriptableFlags();

    void   preCreate(in nsISupports nativeObj, in JSContextPtr cx,
                     in JSObjectPtr globalObj, out JSObjectPtr parentObj);

    boolean addProperty(in nsIXPConnectWrappedNative wrapper,
                       in JSContextPtr cx, in JSObjectPtr obj, in jsid id,
                       in jsval val);

    // The returnCode should be set to NS_SUCCESS_I_DID_SOMETHING if
    // this method does something.
    boolean getProperty(in nsIXPConnectWrappedNative wrapper,
                       in JSContextPtr cx, in JSObjectPtr obj, in jsid id,
                       in JSValPtr vp);

    // The returnCode should be set to NS_SUCCESS_I_DID_SOMETHING if
    // this method does something.
    boolean setProperty(in nsIXPConnectWrappedNative wrapper,
                       in JSContextPtr cx, in JSObjectPtr obj, in jsid id,
                       in JSValPtr vp);

    boolean enumerate(in nsIXPConnectWrappedNative wrapper,
                     in JSContextPtr cx, in JSObjectPtr obj);

    boolean newEnumerate(in nsIXPConnectWrappedNative wrapper,
                        in JSContextPtr cx, in JSObjectPtr obj,
                        in JSAutoIdVector properties);

    boolean resolve(in nsIXPConnectWrappedNative wrapper,
                    in JSContextPtr cx, in JSObjectPtr obj, in jsid id,
                    out boolean resolvedp);

    void   finalize(in nsIXPConnectWrappedNative wrapper,
                    in JSFreeOpPtr fop, in JSObjectPtr obj);

    boolean call(in nsIXPConnectWrappedNative wrapper,
                in JSContextPtr cx, in JSObjectPtr obj,
                in JSCallArgsRef args);

    boolean construct(in nsIXPConnectWrappedNative wrapper,
                     in JSContextPtr cx, in JSObjectPtr obj,
                     in JSCallArgsRef args);

    boolean hasInstance(in nsIXPConnectWrappedNative wrapper,
                       in JSContextPtr cx, in JSObjectPtr obj,
                       in jsval val, out boolean bp);

    void postCreatePrototype(in JSContextPtr cx, in JSObjectPtr proto);
};

%{ C++

#include "nsAutoPtr.h"

#define NS_XPCCLASSINFO_IID \
{ 0x43b67f01, 0xd4ce, 0x4b82, \
 { 0xb3, 0xf8, 0xeb, 0xf2, 0x13, 0x60, 0xfb, 0x7e } }

class NS_NO_VTABLE nsXPCClassInfo : public nsIClassInfo,
                                    public nsIXPCScriptable
{
public:
  NS_DECLARE_STATIC_IID_ACCESSOR(NS_XPCCLASSINFO_IID)

  NS_IMETHOD_(MozExternalRefCountType) AddRef() override = 0;
  NS_IMETHOD_(MozExternalRefCountType) Release() override = 0;

  virtual void PreserveWrapper(nsISupports *aNative) = 0;
};

NS_DEFINE_STATIC_IID_ACCESSOR(nsXPCClassInfo, NS_XPCCLASSINFO_IID)

inline
nsresult
CallQueryInterface(nsISupports* aSourcePtr,
                   RefPtrGetterAddRefs<nsXPCClassInfo> aDestPtr)
{
  return CallQueryInterface(aSourcePtr,
                            static_cast<nsXPCClassInfo**>(aDestPtr));
}

%}