gecko-dev/js/ipc/ContextWrapperChild.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:
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* The Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Ben Newman <b{enjam,newma}n@mozilla.com> (original author)
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#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