gecko-dev/js/ipc/ObjectWrapperParent.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* vim: set ts=8 sw=4 et tw=80:
*
* 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/. */
#ifndef mozilla_jsipc_ObjectWrapperParent_h__
#define mozilla_jsipc_ObjectWrapperParent_h__
#include "mozilla/jsipc/PObjectWrapperParent.h"
#include "jsapi.h"
#include "jsclass.h"
#include "nsAutoJSValHolder.h"
namespace mozilla {
namespace jsipc {
class ContextWrapperParent;
class OperationChecker {
public:
virtual void CheckOperation(JSContext* cx,
OperationStatus* status) = 0;
};
class ObjectWrapperParent
: public PObjectWrapperParent
, public OperationChecker
{
public:
ObjectWrapperParent()
: mObj(NULL)
{}
JSObject* GetJSObject(JSContext* cx) const;
JSObject* GetJSObjectOrNull() const {
return mObj;
}
jsval GetJSVal(JSContext* cx) const {
return OBJECT_TO_JSVAL(GetJSObject(cx));
}
void CheckOperation(JSContext* cx,
OperationStatus* status);
static const js::Class sCPOW_JSClass;
protected:
void ActorDestroy(ActorDestroyReason why);
ContextWrapperParent* Manager();
private:
mutable JSObject* mObj;
static JSBool
CPOW_AddProperty(JSContext *cx, JSHandleObject obj, JSHandleId id, jsval *vp);
static JSBool
CPOW_DelProperty(JSContext *cx, JSHandleObject obj, JSHandleId id, jsval *vp);
static JSBool
CPOW_GetProperty(JSContext *cx, JSHandleObject obj, JSHandleId id, jsval *vp);
static JSBool
CPOW_SetProperty(JSContext *cx, JSHandleObject obj, JSHandleId id, JSBool strict, jsval *vp);
JSBool NewEnumerateInit(JSContext* cx, jsval* statep, jsid* idp);
JSBool NewEnumerateNext(JSContext* cx, jsval* statep, jsid* idp);
JSBool NewEnumerateDestroy(JSContext* cx, jsval state);
static JSBool
CPOW_NewEnumerate(JSContext *cx, JSHandleObject obj, JSIterateOp enum_op,
jsval *statep, jsid *idp);
static JSBool
CPOW_NewResolve(JSContext *cx, JSHandleObject obj, JSHandleId id, unsigned flags,
JSMutableHandleObject objp);
static JSBool
CPOW_Convert(JSContext *cx, JSHandleObject obj, JSType type, jsval *vp);
static void
CPOW_Finalize(js::FreeOp* fop, JSObject* obj);
static JSBool
CPOW_Call(JSContext* cx, unsigned argc, jsval* vp);
static JSBool
CPOW_Construct(JSContext *cx, unsigned argc, jsval *vp);
static JSBool
CPOW_HasInstance(JSContext *cx, JSHandleObject obj, const jsval *v, JSBool *bp);
static JSBool
CPOW_Equality(JSContext *cx, JSHandleObject obj, const jsval *v, JSBool *bp);
static bool jsval_to_JSVariant(JSContext* cx, jsval from, JSVariant* to);
static bool jsval_from_JSVariant(JSContext* cx, const JSVariant& from,
jsval* to);
static bool
JSObject_to_PObjectWrapperParent(JSObject* from, PObjectWrapperParent** to);
static bool
JSObject_from_PObjectWrapperParent(JSContext* cx,
const PObjectWrapperParent* from,
JSMutableHandleObject to);
static bool
jsval_from_PObjectWrapperParent(JSContext* cx,
const PObjectWrapperParent* from,
jsval* to);
};
template <class StatusOwnerPolicy>
class AutoCheckOperationBase
: public StatusOwnerPolicy
{
JSContext* const mContext;
OperationChecker* const mChecker;
protected:
AutoCheckOperationBase(JSContext* cx,
OperationChecker* checker)
: mContext(cx)
, mChecker(checker)
{}
virtual ~AutoCheckOperationBase() {
mChecker->CheckOperation(mContext, StatusOwnerPolicy::StatusPtr());
}
public:
bool Ok() {
return (StatusOwnerPolicy::StatusPtr()->type() == OperationStatus::TJSBool &&
StatusOwnerPolicy::StatusPtr()->get_JSBool());
}
};
}}
#endif