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
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
// 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_USER_SCRIPT_SET_H_
#define EXTENSIONS_RENDERER_USER_SCRIPT_SET_H_
#include <map>
#include <memory>
#include <set>
#include <string>
#include <vector>
#include "base/macros.h"
#include "base/memory/read_only_shared_memory_region.h"
#include "base/observer_list.h"
#include "extensions/common/mojom/host_id.mojom-forward.h"
#include "extensions/common/mojom/run_location.mojom-shared.h"
#include "extensions/common/user_script.h"
#include "third_party/blink/public/platform/web_string.h"
class GURL;
namespace content {
class RenderFrame;
}
namespace extensions {
class ScriptInjection;
// The UserScriptSet is a collection of UserScripts which knows how to update
// itself from SharedMemory and create ScriptInjections for UserScripts to
// inject on a page.
class UserScriptSet {
public:
class Observer {
public:
// Called when the set of user scripts is updated, which invalidates all
// previous script objects from this UserScriptSet.
virtual void OnUserScriptsUpdated() = 0;
// Called when this UserScriptSet is destroyed.
virtual void OnUserScriptSetDestroyed() = 0;
};
explicit UserScriptSet(mojom::HostID host_id);
~UserScriptSet();
// Adds or removes observers.
void AddObserver(Observer* observer);
void RemoveObserver(Observer* observer);
// Append any ScriptInjections that should run on the given |render_frame| and
// |tab_id|, at the given |run_location|, to |injections|.
// |extensions| is passed in to verify the corresponding extension is still
// valid.
void GetInjections(std::vector<std::unique_ptr<ScriptInjection>>* injections,
content::RenderFrame* render_frame,
int tab_id,
mojom::RunLocation run_location,
bool log_activity);
std::unique_ptr<ScriptInjection> GetDeclarativeScriptInjection(
const std::string& script_id,
content::RenderFrame* render_frame,
int tab_id,
mojom::RunLocation run_location,
const GURL& document_url,
bool log_activity);
// Updates scripts given the shared memory region containing user scripts.
// Returns true if the scripts were successfully updated.
bool UpdateUserScripts(base::ReadOnlySharedMemoryRegion shared_memory);
bool HasScripts() const { return !scripts_.empty(); }
// Clears all user scripts managed by this set and notifies observers.
void ClearUserScripts();
// Returns the contents of a script file.
// Note that copying is cheap as this uses WebString.
blink::WebString GetJsSource(const UserScript::File& file,
bool emulate_greasemonkey);
blink::WebString GetCssSource(const UserScript::File& file);
private:
// Returns a new ScriptInjection for the given |script| to execute in the
// |render_frame|, or NULL if the script should not execute.
std::unique_ptr<ScriptInjection> GetInjectionForScript(
const UserScript* script,
content::RenderFrame* render_frame,
int tab_id,
mojom::RunLocation run_location,
const GURL& document_url,
bool is_declarative,
bool log_activity);
// Shared memory mapping containing raw script data.
base::ReadOnlySharedMemoryMapping shared_memory_mapping_;
// The UserScripts this injector manages.
UserScriptList scripts_;
// Map of user script file url -> source.
std::map<GURL, blink::WebString> script_sources_;
// The HostID which |scripts_| is associated with.
mojom::HostID host_id_;
// The associated observers.
base::ObserverList<Observer>::Unchecked observers_;
DISALLOW_COPY_AND_ASSIGN(UserScriptSet);
};
} // namespace extensions
#endif // EXTENSIONS_RENDERER_USER_SCRIPT_SET_H_
|
