gecko-dev/js/ipc/ContextWrapperChild.h

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2.1 KiB
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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_ContextWrapperChild_h__
#define mozilla_jsipc_ContextWrapperChild_h__
#include "mozilla/jsipc/PContextWrapperChild.h"
#include "mozilla/jsipc/ObjectWrapperChild.h"
#include "jsapi.h"
#include "nsClassHashtable.h"
#include "nsHashKeys.h"
namespace mozilla {
namespace jsipc {
class ContextWrapperChild
: public PContextWrapperChild
{
public:
ContextWrapperChild(JSContext* cx)
: mContext(cx)
{
mResidentObjectTable.Init();
}
JSContext* GetContext() { return mContext; }
PObjectWrapperChild* GetOrCreateWrapper(JSObject* obj,
bool makeGlobal = false)
{
if (!obj) // Don't wrap nothin'!
return NULL;
PObjectWrapperChild* wrapper;
while (!mResidentObjectTable.Get(obj, &wrapper)) {
wrapper = SendPObjectWrapperConstructor(AllocPObjectWrapper(obj),
makeGlobal);
if (wrapper)
mResidentObjectTable.Put(obj, wrapper);
else
return NULL;
}
return wrapper;
}
protected:
PObjectWrapperChild* AllocPObjectWrapper(JSObject* obj) {
return new ObjectWrapperChild(mContext, obj);
}
PObjectWrapperChild* AllocPObjectWrapper(const bool&) {
return AllocPObjectWrapper(JS_GetGlobalObject(mContext));
}
bool DeallocPObjectWrapper(PObjectWrapperChild* actor) {
ObjectWrapperChild* owc = static_cast<ObjectWrapperChild*>(actor);
mResidentObjectTable.Remove(owc->GetJSObject());
return true;
}
private:
JSContext* const mContext;
nsClassHashtable<nsPtrHashKey<JSObject>,
PObjectWrapperChild> mResidentObjectTable;
};
}}
#endif