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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CONTENT_RENDERER_PEPPER_HOST_GLOBALS_H_
      6 #define CONTENT_RENDERER_PEPPER_HOST_GLOBALS_H_
      7 
      8 #include "base/compiler_specific.h"
      9 #include "content/renderer/pepper/host_var_tracker.h"
     10 #include "ppapi/shared_impl/callback_tracker.h"
     11 #include "ppapi/shared_impl/ppapi_globals.h"
     12 #include "ppapi/shared_impl/resource_tracker.h"
     13 #include "ppapi/shared_impl/var_tracker.h"
     14 
     15 namespace content {
     16 
     17 class PepperPluginInstanceImpl;
     18 class PluginModule;
     19 
     20 class HostGlobals : public ppapi::PpapiGlobals {
     21  public:
     22   HostGlobals();
     23   virtual ~HostGlobals();
     24 
     25   // Getter for the global singleton. Generally, you should use
     26   // PpapiGlobals::Get() when possible. Use this only when you need some
     27   // host-specific functionality.
     28   inline static HostGlobals* Get() {
     29     DCHECK(PpapiGlobals::Get()->IsHostGlobals());
     30     return static_cast<HostGlobals*>(PpapiGlobals::Get());
     31   }
     32 
     33   // PpapiGlobals implementation.
     34   virtual ppapi::ResourceTracker* GetResourceTracker() OVERRIDE;
     35   virtual ppapi::VarTracker* GetVarTracker() OVERRIDE;
     36   virtual ppapi::CallbackTracker* GetCallbackTrackerForInstance(
     37       PP_Instance instance) OVERRIDE;
     38   virtual ppapi::thunk::PPB_Instance_API* GetInstanceAPI(
     39       PP_Instance instance) OVERRIDE;
     40   virtual ppapi::thunk::ResourceCreationAPI* GetResourceCreationAPI(
     41       PP_Instance instance) OVERRIDE;
     42   virtual PP_Module GetModuleForInstance(PP_Instance instance) OVERRIDE;
     43   virtual std::string GetCmdLine() OVERRIDE;
     44   virtual void PreCacheFontForFlash(const void* logfontw) OVERRIDE;
     45   virtual void LogWithSource(PP_Instance instance,
     46                              PP_LogLevel level,
     47                              const std::string& source,
     48                              const std::string& value) OVERRIDE;
     49   virtual void BroadcastLogWithSource(PP_Module module,
     50                                       PP_LogLevel level,
     51                                       const std::string& source,
     52                                       const std::string& value) OVERRIDE;
     53   virtual ppapi::MessageLoopShared* GetCurrentMessageLoop() OVERRIDE;
     54   virtual base::TaskRunner* GetFileTaskRunner() OVERRIDE;
     55 
     56   HostVarTracker* host_var_tracker() {
     57     return &host_var_tracker_;
     58   }
     59 
     60   // PP_Modules ----------------------------------------------------------------
     61 
     62   // Adds a new plugin module to the list of tracked module, and returns a new
     63   // module handle to identify it.
     64   PP_Module AddModule(PluginModule* module);
     65 
     66   // Called when a plugin modulde was deleted and should no longer be tracked.
     67   // The given handle should be one generated by AddModule.
     68   void ModuleDeleted(PP_Module module);
     69 
     70   // Returns a pointer to the plugin modulde object associated with the given
     71   // modulde handle. The return value will be NULL if the handle is invalid.
     72   PluginModule* GetModule(PP_Module module);
     73 
     74   // PP_Instances --------------------------------------------------------------
     75 
     76   // Adds a new plugin instance to the list of tracked instances, and returns a
     77   // new instance handle to identify it.
     78   PP_Instance AddInstance(PepperPluginInstanceImpl* instance);
     79 
     80   // Called when a plugin instance was deleted and should no longer be tracked.
     81   // The given handle should be one generated by AddInstance.
     82   void InstanceDeleted(PP_Instance instance);
     83 
     84   void InstanceCrashed(PP_Instance instance);
     85 
     86   // Returns a pointer to the plugin instance object associated with the given
     87   // instance handle. The return value will be NULL if the handle is invalid or
     88   // if the instance has crashed.
     89   PepperPluginInstanceImpl* GetInstance(PP_Instance instance);
     90 
     91  private:
     92   // PpapiGlobals overrides.
     93   virtual bool IsHostGlobals() const OVERRIDE;
     94 
     95   static HostGlobals* host_globals_;
     96 
     97   ppapi::ResourceTracker resource_tracker_;
     98   HostVarTracker host_var_tracker_;
     99 
    100   // Tracks all live instances and their associated object.
    101   typedef std::map<PP_Instance, PepperPluginInstanceImpl*> InstanceMap;
    102   InstanceMap instance_map_;
    103 
    104   // Tracks all live modules. The pointers are non-owning, the PluginModule
    105   // destructor will notify us when the module is deleted.
    106   typedef std::map<PP_Module, PluginModule*> ModuleMap;
    107   ModuleMap module_map_;
    108 
    109   DISALLOW_COPY_AND_ASSIGN(HostGlobals);
    110 };
    111 
    112 }  // namespace content
    113 
    114 #endif   // CONTENT_RENDERER_PEPPER_HOST_GLOBALS_H_
    115