// Copyright (c) 2012 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_PROXY_PLUGIN_GLOBALS_H_
#define PPAPI_PROXY_PLUGIN_GLOBALS_H_

#include "base/compiler_specific.h"
#include "base/synchronization/lock.h"
#include "ppapi/proxy/plugin_resource_tracker.h"
#include "ppapi/proxy/plugin_var_tracker.h"
#include "ppapi/proxy/ppapi_proxy_export.h"
#include "ppapi/shared_impl/callback_tracker.h"
#include "ppapi/shared_impl/ppapi_globals.h"

namespace ppapi {
namespace proxy {

class PluginProxyDelegate;

class PPAPI_PROXY_EXPORT PluginGlobals : public PpapiGlobals {
 public:
  PluginGlobals();
  PluginGlobals(PpapiGlobals::ForTest);
  virtual ~PluginGlobals();

  // Getter for the global singleton. Generally, you should use
  // PpapiGlobals::Get() when possible. Use this only when you need some
  // plugin-specific functionality.
  inline static PluginGlobals* Get() {
    DCHECK(PpapiGlobals::Get()->IsPluginGlobals());
    return static_cast<PluginGlobals*>(PpapiGlobals::Get());
  }

  // PpapiGlobals implementation.
  virtual ResourceTracker* GetResourceTracker() OVERRIDE;
  virtual VarTracker* GetVarTracker() OVERRIDE;
  virtual CallbackTracker* GetCallbackTrackerForInstance(
      PP_Instance instance) OVERRIDE;
  virtual FunctionGroupBase* GetFunctionAPI(PP_Instance inst,
                                            ApiID id) OVERRIDE;
  virtual PP_Module GetModuleForInstance(PP_Instance instance) OVERRIDE;
  virtual base::Lock* GetProxyLock() OVERRIDE;

  // Getters for the plugin-specific versions.
  PluginResourceTracker* plugin_resource_tracker() {
    return &plugin_resource_tracker_;
  }
  PluginVarTracker* plugin_var_tracker() {
    return &plugin_var_tracker_;
  }

  // The embedder should call set_proxy_delegate during startup.
  PluginProxyDelegate* plugin_proxy_delegate() {
    return plugin_proxy_delegate_;
  }
  void set_plugin_proxy_delegate(PluginProxyDelegate* d) {
    plugin_proxy_delegate_ = d;
  }

 private:
  // PpapiGlobals overrides.
  virtual bool IsPluginGlobals() const OVERRIDE;

  static PluginGlobals* plugin_globals_;

  PluginProxyDelegate* plugin_proxy_delegate_;
  PluginResourceTracker plugin_resource_tracker_;
  PluginVarTracker plugin_var_tracker_;
  scoped_refptr<CallbackTracker> callback_tracker_;
  base::Lock proxy_lock_;

  DISALLOW_COPY_AND_ASSIGN(PluginGlobals);
};

}  // namespace proxy
}  // namespace ppapi

#endif   // PPAPI_PROXY_PLUGIN_GLOBALS_H_