1 : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
2 : * vim: sw=2 ts=2 et :
3 : * ***** BEGIN LICENSE BLOCK *****
4 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
5 : *
6 : * The contents of this file are subject to the Mozilla Public License Version
7 : * 1.1 (the "License"); you may not use this file except in compliance with
8 : * the License. You may obtain a copy of the License at
9 : * http://www.mozilla.org/MPL/
10 : *
11 : * Software distributed under the License is distributed on an "AS IS" basis,
12 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13 : * for the specific language governing rights and limitations under the
14 : * License.
15 : *
16 : * The Original Code is Mozilla Plugins.
17 : *
18 : * The Initial Developer of the Original Code is
19 : * Mozilla Foundation.
20 : * Portions created by the Initial Developer are Copyright (C) 2010
21 : * the Initial Developer. All Rights Reserved.
22 : *
23 : * Contributor(s):
24 : * Ben Turner <bent.mozilla@gmail.com>
25 : *
26 : * Alternatively, the contents of this file may be used under the terms of
27 : * either the GNU General Public License Version 2 or later (the "GPL"), or
28 : * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
29 : * in which case the provisions of the GPL or the LGPL are applicable instead
30 : * of those above. If you wish to allow use of your version of this file only
31 : * under the terms of either the GPL or the LGPL, and not to allow others to
32 : * use your version of this file under the terms of the MPL, indicate your
33 : * decision by deleting the provisions above and replace them with the notice
34 : * and other provisions required by the GPL or the LGPL. If you do not delete
35 : * the provisions above, a recipient may use your version of this file under
36 : * the terms of any one of the MPL, the GPL or the LGPL.
37 : *
38 : * ***** END LICENSE BLOCK ***** */
39 :
40 : #ifndef dom_plugins_PluginIdentifierParent_h
41 : #define dom_plugins_PluginIdentifierParent_h
42 :
43 : #include "mozilla/plugins/PPluginIdentifierParent.h"
44 :
45 : #include "npapi.h"
46 : #include "npruntime.h"
47 :
48 : namespace mozilla {
49 : namespace plugins {
50 :
51 : class PluginInstanceParent;
52 :
53 : class PluginIdentifierParent : public PPluginIdentifierParent
54 : {
55 : friend class PluginModuleParent;
56 :
57 : public:
58 0 : NPIdentifier ToNPIdentifier()
59 : {
60 0 : return mIdentifier;
61 : }
62 :
63 0 : bool IsTemporary() {
64 0 : return !!mTemporaryRefs;
65 : }
66 :
67 : /**
68 : * Holds a perhaps-temporary identifier for the current stack frame.
69 : */
70 : class NS_STACK_CLASS StackIdentifier
71 : {
72 : public:
73 : StackIdentifier(PluginInstanceParent* inst, NPIdentifier aIdentifier);
74 : StackIdentifier(NPObject* aObject, NPIdentifier aIdentifier);
75 : ~StackIdentifier();
76 :
77 0 : operator PluginIdentifierParent*() {
78 0 : return mIdentifier;
79 : }
80 :
81 : private:
82 : DISALLOW_COPY_AND_ASSIGN(StackIdentifier);
83 :
84 : PluginIdentifierParent* mIdentifier;
85 : };
86 :
87 : protected:
88 0 : PluginIdentifierParent(NPIdentifier aIdentifier, bool aTemporary)
89 : : mIdentifier(aIdentifier)
90 0 : , mTemporaryRefs(aTemporary ? 1 : 0)
91 : {
92 0 : MOZ_COUNT_CTOR(PluginIdentifierParent);
93 0 : }
94 :
95 : virtual ~PluginIdentifierParent()
96 : {
97 : MOZ_COUNT_DTOR(PluginIdentifierParent);
98 : }
99 :
100 : virtual bool RecvRetain();
101 :
102 0 : void AddTemporaryRef() {
103 0 : mTemporaryRefs++;
104 0 : }
105 :
106 : /**
107 : * @returns true if the last temporary reference was removed.
108 : */
109 : bool RemoveTemporaryRef() {
110 : --mTemporaryRefs;
111 : return !mTemporaryRefs;
112 : }
113 :
114 : private:
115 : NPIdentifier mIdentifier;
116 : unsigned int mTemporaryRefs;
117 : };
118 :
119 : } // namespace plugins
120 : } // namespace mozilla
121 :
122 : #endif // dom_plugins_PluginIdentifierParent_h
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