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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef PPAPI_SHARED_IMPL_TRACKER_BASE_H_
#define PPAPI_SHARED_IMPL_TRACKER_BASE_H_
#include "ppapi/c/pp_instance.h"
#include "ppapi/c/pp_resource.h"
#include "ppapi/proxy/interface_id.h"
namespace ppapi {
class FunctionGroupBase;
class ResourceObjectBase;
// Tracks resource and function APIs, providing a mapping between ID and
// object.
// TODO(brettw) Eventually this should be one object with global tracking and
// called "Tracker", and this would be used in both the plugin side of the
// proxy as well as the implementation in the renderer. Currently, all this
// does is forward to the process-type-specific tracker to get the information.
class TrackerBase {
public:
// Must be called before any other function that uses the TrackerBase.
// This sets the getter that returns the global implmenetation of
// TrackerBase. It will be different for in the renderer and in the plugin
// process.
static void Init(TrackerBase*(*getter)());
// Retrieves the global tracker. This will be NULL if you haven't called
// Init() first (it should be unnecessary to NULL-check this).
static TrackerBase* Get();
// Returns the resource object corresponding to the given ID, or NULL if
// there isn't one.
virtual ResourceObjectBase* GetResourceAPI(PP_Resource res) = 0;
// Returns the function object corresponding to the given ID, or NULL if
// there isn't one.
virtual FunctionGroupBase* GetFunctionAPI(PP_Instance inst,
pp::proxy::InterfaceID id) = 0;
// Returns the instance corresponding to the given resource, or 0 if the
// resource is invalid.
virtual PP_Instance GetInstanceForResource(PP_Resource resource) = 0;
};
} // namespace ppapi
#endif // PPAPI_SHARED_IMPL_TRACKER_BASE_H_
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