gecko/js/jetpack/JetpackActorCommon.h

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/* -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 8 -*- */
/* ***** 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 Firefox.
*
* The Initial Developer of the Original Code is
* the Mozilla Foundation <http://www.mozilla.org>.
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Ben Newman <mozilla@benjamn.com> (original author)
*
* Alternatively, the contents of this file may be used under the terms of
* either 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_jetpack_JetpackActorCommon_h
#define mozilla_jetpack_JetpackActorCommon_h
#include "nsClassHashtable.h"
#include "nsHashKeys.h"
#include "nsTArray.h"
#include "nsString.h"
#include "nsAutoJSValHolder.h"
struct JSContext;
namespace mozilla {
namespace jetpack {
class KeyValue;
class PrimVariant;
class CompVariant;
class Variant;
class JetpackActorCommon
{
public:
bool
RecvMessage(JSContext* cx,
const nsString& messageName,
const nsTArray<Variant>& data,
nsTArray<Variant>* results);
nsresult
RegisterReceiver(JSContext* cx,
const nsString& messageName,
jsval receiver);
void
UnregisterReceiver(const nsString& messageName,
jsval receiver);
void
UnregisterReceivers(const nsString& messageName) {
mReceivers.Remove(messageName);
}
void ClearReceivers() {
mReceivers.Clear();
}
class OpaqueSeenType;
static bool jsval_to_Variant(JSContext* cx, jsval from, Variant* to,
OpaqueSeenType* seen = NULL);
static bool jsval_from_Variant(JSContext* cx, const Variant& from, jsval* to,
OpaqueSeenType* seen = NULL);
protected:
JetpackActorCommon() {
mReceivers.Init();
NS_ASSERTION(mReceivers.IsInitialized(),
"Failed to initialize message receiver hash set");
}
private:
static bool jsval_to_PrimVariant(JSContext* cx, JSType type, jsval from,
PrimVariant* to);
static bool jsval_to_CompVariant(JSContext* cx, JSType type, jsval from,
CompVariant* to, OpaqueSeenType* seen);
static bool jsval_from_PrimVariant(JSContext* cx, const PrimVariant& from,
jsval* to);
static bool jsval_from_CompVariant(JSContext* cx, const CompVariant& from,
jsval* to, OpaqueSeenType* seen);
// Don't want to be memcpy'ing nsAutoJSValHolders around, so we need a
// linked list of receivers.
class RecList
{
JSContext* mCx;
class RecNode
{
nsAutoJSValHolder mHolder;
public:
RecNode* down;
RecNode(JSContext* cx, jsval v) : down(NULL) {
mHolder.Hold(cx);
mHolder = v;
}
jsval value() { return mHolder; }
}* mHead;
public:
RecList(JSContext* cx) : mCx(cx), mHead(NULL) {}
~RecList();
void add(jsval v);
void remove(jsval v);
void copyTo(nsTArray<jsval>& dst) const;
};
nsClassHashtable<nsStringHashKey, RecList> mReceivers;
};
} // namespace jetpack
} // namespace mozilla
#endif