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
3 // found in the LICENSE file.
5 #ifndef CHROME_RENDERER_EXTENSIONS_USER_SCRIPT_SLAVE_H_
6 #define CHROME_RENDERER_EXTENSIONS_USER_SCRIPT_SLAVE_H_
13 #include "base/memory/scoped_ptr.h"
14 #include "base/memory/shared_memory.h"
15 #include "base/stl_util.h"
16 #include "base/strings/string_piece.h"
17 #include "extensions/common/user_script.h"
18 #include "third_party/WebKit/public/web/WebScriptSource.h"
26 using blink::WebScriptSource;
28 namespace extensions {
32 // Manages installed UserScripts for a render process.
33 class UserScriptSlave {
35 // Utility to get the URL we will match against for a frame. If the frame has
36 // committed, this is the commited URL. Otherwise it is the provisional URL.
37 static GURL GetDataSourceURLForFrame(const blink::WebFrame* frame);
39 explicit UserScriptSlave(const ExtensionSet* extensions);
42 // Returns the unique set of extension IDs this UserScriptSlave knows about.
43 void GetActiveExtensions(std::set<std::string>* extension_ids);
45 // Update the parsed scripts from shared memory.
46 bool UpdateScripts(base::SharedMemoryHandle shared_memory);
48 // Inject the appropriate scripts into a frame based on its URL.
49 // TODO(aa): Extract a UserScriptFrame interface out of this to improve
51 void InjectScripts(blink::WebFrame* frame, UserScript::RunLocation location);
53 // Gets the isolated world ID to use for the given |extension| in the given
54 // |frame|. If no isolated world has been created for that extension,
55 // one will be created and initialized.
56 int GetIsolatedWorldIdForExtension(const Extension* extension,
57 blink::WebFrame* frame);
59 // Gets the id of the extension running in a given isolated world. If no such
60 // isolated world exists, or no extension is running in it, returns empty
62 std::string GetExtensionIdForIsolatedWorld(int isolated_world_id);
64 void RemoveIsolatedWorld(const std::string& extension_id);
67 // Shared memory containing raw script data.
68 scoped_ptr<base::SharedMemory> shared_memory_;
70 // Parsed script data.
71 std::vector<UserScript*> scripts_;
72 STLElementDeleter<std::vector<UserScript*> > script_deleter_;
74 // Greasemonkey API source that is injected with the scripts.
75 base::StringPiece api_js_;
77 // Extension metadata.
78 const ExtensionSet* extensions_;
80 typedef std::map<std::string, int> IsolatedWorldMap;
81 IsolatedWorldMap isolated_world_ids_;
83 DISALLOW_COPY_AND_ASSIGN(UserScriptSlave);
86 } // namespace extensions
88 #endif // CHROME_RENDERER_EXTENSIONS_USER_SCRIPT_SLAVE_H_