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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef WEBKIT_PLUGINS_PPAPI_NPOBJECT_VAR_H_ | 5 #ifndef CONTENT_RENDERER_PEPPER_NPOBJECT_VAR_H_ |
| 6 #define WEBKIT_PLUGINS_PPAPI_NPOBJECT_VAR_H_ | 6 #define CONTENT_RENDERER_PEPPER_NPOBJECT_VAR_H_ |
| 7 | 7 |
| 8 #include <string> | 8 #include <string> |
| 9 | 9 |
| 10 #include "base/compiler_specific.h" | 10 #include "base/compiler_specific.h" |
| 11 #include "ppapi/c/pp_instance.h" | 11 #include "ppapi/c/pp_instance.h" |
| 12 #include "ppapi/shared_impl/var.h" | 12 #include "ppapi/shared_impl/var.h" |
| 13 #include "webkit/plugins/webkit_plugins_export.h" | 13 #include "content/common/content_export.h" |
| 14 | 14 |
| 15 typedef struct NPObject NPObject; | 15 typedef struct NPObject NPObject; |
| 16 typedef struct _NPVariant NPVariant; | 16 typedef struct _NPVariant NPVariant; |
| 17 typedef void* NPIdentifier; | 17 typedef void* NPIdentifier; |
| 18 | 18 |
| 19 namespace ppapi { | 19 namespace ppapi { |
| 20 | 20 |
| 21 // NPObjectVar ----------------------------------------------------------------- | 21 // NPObjectVar ----------------------------------------------------------------- |
| 22 | 22 |
| 23 // Represents a JavaScript object Var. By itself, this represents random | 23 // Represents a JavaScript object Var. By itself, this represents random |
| 24 // NPObjects that a given plugin (identified by the resource's module) wants to | 24 // NPObjects that a given plugin (identified by the resource's module) wants to |
| 25 // reference. If two different modules reference the same NPObject (like the | 25 // reference. If two different modules reference the same NPObject (like the |
| 26 // "window" object), then there will be different NPObjectVar's (and hence | 26 // "window" object), then there will be different NPObjectVar's (and hence |
| 27 // PP_Var IDs) for each module. This allows us to track all references owned by | 27 // PP_Var IDs) for each module. This allows us to track all references owned by |
| 28 // a given module and free them when the plugin exits independently of other | 28 // a given module and free them when the plugin exits independently of other |
| 29 // plugins that may be running at the same time. | 29 // plugins that may be running at the same time. |
| 30 class NPObjectVar : public Var { | 30 class NPObjectVar : public Var { |
| 31 public: | 31 public: |
| 32 // You should always use FromNPObject to create an NPObjectVar. This function | 32 // You should always use FromNPObject to create an NPObjectVar. This function |
| 33 // guarantees that we maintain the 1:1 mapping between NPObject and | 33 // guarantees that we maintain the 1:1 mapping between NPObject and |
| 34 // NPObjectVar. | 34 // NPObjectVar. |
| 35 NPObjectVar(PP_Instance instance, NPObject* np_object); | 35 NPObjectVar(PP_Instance instance, NPObject* np_object); |
| 36 | 36 |
| 37 virtual ~NPObjectVar(); | |
| 38 | |
| 39 // Var overrides. | 37 // Var overrides. |
| 40 virtual NPObjectVar* AsNPObjectVar() OVERRIDE; | 38 virtual NPObjectVar* AsNPObjectVar() OVERRIDE; |
| 41 virtual PP_VarType GetType() const OVERRIDE; | 39 virtual PP_VarType GetType() const OVERRIDE; |
| 42 | 40 |
| 43 // Returns the underlying NPObject corresponding to this NPObjectVar. | 41 // Returns the underlying NPObject corresponding to this NPObjectVar. |
| 44 // Guaranteed non-NULL. | 42 // Guaranteed non-NULL. |
| 45 NPObject* np_object() const { return np_object_; } | 43 NPObject* np_object() const { return np_object_; } |
| 46 | 44 |
| 47 // Notification that the instance was deleted, the internal reference will be | 45 // Notification that the instance was deleted, the internal reference will be |
| 48 // zeroed out. | 46 // zeroed out. |
| 49 void InstanceDeleted(); | 47 void InstanceDeleted(); |
| 50 | 48 |
| 51 // Possibly 0 if the object has outlived its instance. | 49 // Possibly 0 if the object has outlived its instance. |
| 52 PP_Instance pp_instance() const { return pp_instance_; } | 50 PP_Instance pp_instance() const { return pp_instance_; } |
| 53 | 51 |
| 54 // Helper function that converts a PP_Var to an object. This will return NULL | 52 // Helper function that converts a PP_Var to an object. This will return NULL |
| 55 // if the PP_Var is not of object type or the object is invalid. | 53 // if the PP_Var is not of object type or the object is invalid. |
| 56 WEBKIT_PLUGINS_EXPORT static scoped_refptr<NPObjectVar> FromPPVar(PP_Var var); | 54 CONTENT_EXPORT static scoped_refptr<NPObjectVar> FromPPVar(PP_Var var); |
| 57 | 55 |
| 58 private: | 56 private: |
| 57 virtual ~NPObjectVar(); |
| 58 |
| 59 // Possibly 0 if the object has outlived its instance. | 59 // Possibly 0 if the object has outlived its instance. |
| 60 PP_Instance pp_instance_; | 60 PP_Instance pp_instance_; |
| 61 | 61 |
| 62 // Guaranteed non-NULL, this is the underlying object used by WebKit. We | 62 // Guaranteed non-NULL, this is the underlying object used by WebKit. We |
| 63 // hold a reference to this object. | 63 // hold a reference to this object. |
| 64 NPObject* np_object_; | 64 NPObject* np_object_; |
| 65 | 65 |
| 66 DISALLOW_COPY_AND_ASSIGN(NPObjectVar); | 66 DISALLOW_COPY_AND_ASSIGN(NPObjectVar); |
| 67 }; | 67 }; |
| 68 | 68 |
| 69 } // namespace | 69 } // namespace |
| 70 | 70 |
| 71 #endif // WEBKIT_PLUGINS_PPAPI_NPOBJECT_VAR_H_ | 71 #endif // CONTENT_RENDERER_PEPPER_NPOBJECT_VAR_H_ |
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