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Side by Side Diff: chrome/renderer/extensions/user_script_scheduler.h

Issue 63273002: Rename WebKit namespace to blink (part 4) (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Created 7 years, 1 month ago
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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 CHROME_RENDERER_EXTENSIONS_USER_SCRIPT_SCHEDULER_H_ 5 #ifndef CHROME_RENDERER_EXTENSIONS_USER_SCRIPT_SCHEDULER_H_
6 #define CHROME_RENDERER_EXTENSIONS_USER_SCRIPT_SCHEDULER_H_ 6 #define CHROME_RENDERER_EXTENSIONS_USER_SCRIPT_SCHEDULER_H_
7 7
8 #include <map> 8 #include <map>
9 #include <queue> 9 #include <queue>
10 10
11 #include "base/memory/linked_ptr.h" 11 #include "base/memory/linked_ptr.h"
12 #include "base/memory/weak_ptr.h" 12 #include "base/memory/weak_ptr.h"
13 #include "extensions/common/user_script.h" 13 #include "extensions/common/user_script.h"
14 14
15 class RenderView; 15 class RenderView;
16 struct ExtensionMsg_ExecuteCode_Params; 16 struct ExtensionMsg_ExecuteCode_Params;
17 17
18 namespace WebKit { 18 namespace blink {
19 class WebFrame; 19 class WebFrame;
20 } 20 }
21 21
22 namespace extensions { 22 namespace extensions {
23 class Dispatcher; 23 class Dispatcher;
24 24
25 // Implements support for injecting scripts at different times in the document 25 // Implements support for injecting scripts at different times in the document
26 // loading process. The different possible time are described in 26 // loading process. The different possible time are described in
27 // UserScript::RunLocation. 27 // UserScript::RunLocation.
28 // 28 //
29 // Currently, determining idleness is simple: it is whichever of the following 29 // Currently, determining idleness is simple: it is whichever of the following
30 // happens first: 30 // happens first:
31 // 31 //
32 // a) When the initial DOM for a page is complete + kUserScriptIdleTimeout, 32 // a) When the initial DOM for a page is complete + kUserScriptIdleTimeout,
33 // b) or when the page has completely loaded including all subresources. 33 // b) or when the page has completely loaded including all subresources.
34 // 34 //
35 // The intent of this mechanism is to prevent user scripts from slowing down 35 // The intent of this mechanism is to prevent user scripts from slowing down
36 // fast pages (run after load), while still allowing them to run relatively 36 // fast pages (run after load), while still allowing them to run relatively
37 // timely for pages with lots of slow subresources. 37 // timely for pages with lots of slow subresources.
38 // 38 //
39 // NOTE: this class does not inherit from RenderViewObserver on purpose. The 39 // NOTE: this class does not inherit from RenderViewObserver on purpose. The
40 // reason is that this object is per frame, and a frame can move across 40 // reason is that this object is per frame, and a frame can move across
41 // RenderViews thanks to adoptNode. So we have each RenderView's 41 // RenderViews thanks to adoptNode. So we have each RenderView's
42 // ExtensionHelper proxy these calls to the renderer process' Dispatcher, 42 // ExtensionHelper proxy these calls to the renderer process' Dispatcher,
43 // which contains the mapping from WebFrame to us. 43 // which contains the mapping from WebFrame to us.
44 class UserScriptScheduler { 44 class UserScriptScheduler {
45 public: 45 public:
46 UserScriptScheduler(WebKit::WebFrame* frame, Dispatcher* dispatcher); 46 UserScriptScheduler(blink::WebFrame* frame, Dispatcher* dispatcher);
47 ~UserScriptScheduler(); 47 ~UserScriptScheduler();
48 48
49 void ExecuteCode(const ExtensionMsg_ExecuteCode_Params& params); 49 void ExecuteCode(const ExtensionMsg_ExecuteCode_Params& params);
50 void DidCreateDocumentElement(); 50 void DidCreateDocumentElement();
51 void DidFinishDocumentLoad(); 51 void DidFinishDocumentLoad();
52 void DidFinishLoad(); 52 void DidFinishLoad();
53 void DidStartProvisionalLoad(); 53 void DidStartProvisionalLoad();
54 54
55 private: 55 private:
56 typedef 56 typedef
57 std::queue<linked_ptr<ExtensionMsg_ExecuteCode_Params> > 57 std::queue<linked_ptr<ExtensionMsg_ExecuteCode_Params> >
58 ExecutionQueue; 58 ExecutionQueue;
59 59
60 // Run user scripts, except if they've already run for this frame, or the 60 // Run user scripts, except if they've already run for this frame, or the
61 // frame has been destroyed. 61 // frame has been destroyed.
62 void MaybeRun(); 62 void MaybeRun();
63 63
64 // Backend for the IPC Message ExecuteCode in addition to being used 64 // Backend for the IPC Message ExecuteCode in addition to being used
65 // internally. 65 // internally.
66 void ExecuteCodeImpl(const ExtensionMsg_ExecuteCode_Params& params); 66 void ExecuteCodeImpl(const ExtensionMsg_ExecuteCode_Params& params);
67 67
68 // Get all child frames of parent_frame, returned by frames_vector. 68 // Get all child frames of parent_frame, returned by frames_vector.
69 bool GetAllChildFrames(WebKit::WebFrame* parent_frame, 69 bool GetAllChildFrames(blink::WebFrame* parent_frame,
70 std::vector<WebKit::WebFrame*>* frames_vector) const; 70 std::vector<blink::WebFrame*>* frames_vector) const;
71 71
72 // Call to signify thet the idle timeout has expired. 72 // Call to signify thet the idle timeout has expired.
73 void IdleTimeout(); 73 void IdleTimeout();
74 74
75 base::WeakPtrFactory<UserScriptScheduler> weak_factory_; 75 base::WeakPtrFactory<UserScriptScheduler> weak_factory_;
76 76
77 // The Frame we will run scripts in. 77 // The Frame we will run scripts in.
78 WebKit::WebFrame* frame_; 78 blink::WebFrame* frame_;
79 79
80 // The current location in the document loading process. 80 // The current location in the document loading process.
81 // Will be UserScript::UNDEFINED if it is before any scripts should be run. 81 // Will be UserScript::UNDEFINED if it is before any scripts should be run.
82 UserScript::RunLocation current_location_; 82 UserScript::RunLocation current_location_;
83 83
84 // Whether we have already run the idle scripts. 84 // Whether we have already run the idle scripts.
85 bool has_run_idle_; 85 bool has_run_idle_;
86 86
87 // This is only used if we're for the main frame. 87 // This is only used if we're for the main frame.
88 std::map<UserScript::RunLocation, ExecutionQueue> pending_execution_map_; 88 std::map<UserScript::RunLocation, ExecutionQueue> pending_execution_map_;
89 89
90 Dispatcher* dispatcher_; 90 Dispatcher* dispatcher_;
91 }; 91 };
92 92
93 } // namespace extensions 93 } // namespace extensions
94 94
95 #endif // CHROME_RENDERER_EXTENSIONS_USER_SCRIPT_SCHEDULER_H_ 95 #endif // CHROME_RENDERER_EXTENSIONS_USER_SCRIPT_SCHEDULER_H_
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