extensions/renderer/user_script_slave.h

   1 // Copyright 2014 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.
   4
   5 #ifndef EXTENSIONS_RENDERER_USER_SCRIPT_SLAVE_H_
   6 #define EXTENSIONS_RENDERER_USER_SCRIPT_SLAVE_H_
   7
   8 #include <map>
   9 #include <set>
  10 #include <string>
  11 #include <vector>
  12
  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"
  19
  20 class GURL;
  21
  22 namespace blink {
  23 class WebFrame;
  24 }
  25
  26 using blink::WebScriptSource;
  27
  28 namespace extensions {
  29 class Extension;
  30 class ExtensionSet;
  31
  32 // Manages installed UserScripts for a render process.
  33 class UserScriptSlave {
  34  public:
  35   explicit UserScriptSlave(const ExtensionSet* extensions);
  36   ~UserScriptSlave();
  37
  38   // Returns the unique set of extension IDs this UserScriptSlave knows about.
  39   void GetActiveExtensions(std::set<std::string>* extension_ids);
  40
  41   // Update the parsed scripts from shared memory.
  42   bool UpdateScripts(base::SharedMemoryHandle shared_memory);
  43
  44   // Inject the appropriate scripts into a frame based on its URL.
  45   // TODO(aa): Extract a UserScriptFrame interface out of this to improve
  46   // testability.
  47   void InjectScripts(blink::WebFrame* frame, UserScript::RunLocation location);
  48
  49   // Gets the isolated world ID to use for the given |extension| in the given
  50   // |frame|. If no isolated world has been created for that extension,
  51   // one will be created and initialized.
  52   int GetIsolatedWorldIdForExtension(const Extension* extension,
  53                                      blink::WebFrame* frame);
  54
  55   // Gets the id of the extension running in a given isolated world. If no such
  56   // isolated world exists, or no extension is running in it, returns empty
  57   // string.
  58   std::string GetExtensionIdForIsolatedWorld(int isolated_world_id);
  59
  60   void RemoveIsolatedWorld(const std::string& extension_id);
  61
  62  private:
  63   // Shared memory containing raw script data.
  64   scoped_ptr<base::SharedMemory> shared_memory_;
  65
  66   // Parsed script data.
  67   std::vector<UserScript*> scripts_;
  68   STLElementDeleter<std::vector<UserScript*> > script_deleter_;
  69
  70   // Greasemonkey API source that is injected with the scripts.
  71   base::StringPiece api_js_;
  72
  73   // Extension metadata.
  74   const ExtensionSet* extensions_;
  75
  76   typedef std::map<std::string, int> IsolatedWorldMap;
  77   IsolatedWorldMap isolated_world_ids_;
  78
  79   DISALLOW_COPY_AND_ASSIGN(UserScriptSlave);
  80 };
  81
  82 }  // namespace extensions
  83
  84 #endif  // EXTENSIONS_RENDERER_USER_SCRIPT_SLAVE_H_