blob: a6be82dc4b2658f4cc8173982cd23190c527ec87 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
// Copyright 2014 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 EXTENSIONS_RENDERER_SCRIPT_CONTEXT_SET_H_
#define EXTENSIONS_RENDERER_SCRIPT_CONTEXT_SET_H_
#include <set>
#include <string>
#include "base/basictypes.h"
#include "base/bind.h"
#include "v8/include/v8.h"
class GURL;
namespace base {
class ListValue;
}
namespace content {
class RenderView;
}
namespace v8 {
class Context;
}
namespace extensions {
class ScriptContext;
// A container of ExtensionBindingsContext. Since calling JavaScript within a
// context can cause any number of contexts to be created or destroyed, this
// has additional smarts to help with the set changing underneath callers.
class ScriptContextSet {
public:
ScriptContextSet();
~ScriptContextSet();
int size() const;
// Takes ownership of |context|.
void Add(ScriptContext* context);
// If the specified context is contained in this set, remove it, then delete
// it asynchronously. After this call returns the context object will still
// be valid, but its frame() pointer will be cleared.
void Remove(ScriptContext* context);
// Returns a copy to protect against changes.
typedef std::set<ScriptContext*> ContextSet;
ContextSet GetAll() const;
// Gets the ScriptContext corresponding to v8::Context::GetCurrent(), or
// NULL if no such context exists.
ScriptContext* GetCurrent() const;
// Gets the ScriptContext corresponding to v8::Context::GetCalling(), or
// NULL if no such context exists.
ScriptContext* GetCalling() const;
// Gets the ScriptContext corresponding to the specified
// v8::Context or NULL if no such context exists.
ScriptContext* GetByV8Context(v8::Handle<v8::Context> context) const;
// Synchronously runs |callback| with each ScriptContext that belongs to
// |extension_id| in |render_view|.
//
// |extension_id| may be "" to match all extensions.
// |render_view| may be NULL to match all render views.
void ForEach(const std::string& extension_id,
content::RenderView* render_view,
const base::Callback<void(ScriptContext*)>& callback) const;
// Cleans up contexts belonging to an unloaded extension.
//
// Returns the set of ScriptContexts that were removed as a result. These
// are safe to interact with until the end of the current event loop, since
// they're deleted asynchronously.
ContextSet OnExtensionUnloaded(const std::string& extension_id);
private:
ContextSet contexts_;
DISALLOW_COPY_AND_ASSIGN(ScriptContextSet);
};
} // namespace extensions
#endif // EXTENSIONS_RENDERER_SCRIPT_CONTEXT_SET_H_
|
