extensions/renderer/dispatcher_delegate.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_DISPATCHER_DELEGATE_H_
   6 #define EXTENSIONS_RENDERER_DISPATCHER_DELEGATE_H_
   7
   8 #include <set>
   9 #include <string>
  10
  11 namespace blink {
  12 class WebFrame;
  13 }
  14
  15 namespace extensions {
  16 class Dispatcher;
  17 class Extension;
  18 class ModuleSystem;
  19 class ResourceBundleSourceMap;
  20 class ScriptContext;
  21 class URLPatternSet;
  22
  23 // Base class and default implementation for an extensions::Dispacher delegate.
  24 // DispatcherDelegate can be used to override and extend the behavior of the
  25 // extensions system's renderer side.
  26 class DispatcherDelegate {
  27  public:
  28   virtual ~DispatcherDelegate() {}
  29
  30   // Initializes origin permissions for a newly created extension context.
  31   virtual void InitOriginPermissions(const Extension* extension,
  32                                      bool is_extension_active) {}
  33
  34   // Includes additional native handlers in a ScriptContext's ModuleSystem.
  35   virtual void RegisterNativeHandlers(Dispatcher* dispatcher,
  36                                       ModuleSystem* module_system,
  37                                       ScriptContext* context) {}
  38
  39   // Includes additional source resources into the resource map.
  40   virtual void PopulateSourceMap(ResourceBundleSourceMap* source_map) {}
  41
  42   // Requires additional modules within an extension context's module system.
  43   virtual void RequireAdditionalModules(ScriptContext* context,
  44                                         bool is_within_platform_app) {}
  45
  46   // Allows the delegate to respond to an updated set of active extensions in
  47   // the Dispatcher.
  48   virtual void OnActiveExtensionsUpdated(
  49       const std::set<std::string>& extension_ids) {}
  50
  51   // Sets the current Chrome channel.
  52   // TODO(rockot): This doesn't belong in a generic extensions system interface.
  53   // See http://crbug.com/368431.
  54   virtual void SetChannel(int channel) {}
  55 };
  56
  57 }  // namespace extensions
  58
  59 #endif  // EXTENSIONS_RENDERER_DISPATCHER_DELEGATE_H_