extensions/renderer/event_bindings.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_EVENT_BINDINGS_H_
   6 #define EXTENSIONS_RENDERER_EVENT_BINDINGS_H_
   7
   8 #include "extensions/renderer/object_backed_native_handler.h"
   9 #include "v8/include/v8.h"
  10
  11 namespace base {
  12 class DictionaryValue;
  13 }
  14
  15 namespace extensions {
  16 class ChromeV8Context;
  17 class Dispatcher;
  18 class EventFilter;
  19 class EventFilteringInfo;
  20 class EventMatcher;
  21
  22 // This class deals with the javascript bindings related to Event objects.
  23 class EventBindings : public ObjectBackedNativeHandler {
  24  public:
  25   EventBindings(Dispatcher* dispatcher, ScriptContext* context);
  26   virtual ~EventBindings();
  27
  28  private:
  29   // Attach an event name to an object.
  30   // |event_name| The name of the event to attach.
  31   void AttachEvent(const v8::FunctionCallbackInfo<v8::Value>& args);
  32
  33   // Detach an event name from an object.
  34   // |event_name| The name of the event to stop listening to.
  35   // |is_manual| True if this detach was done by the user via removeListener()
  36   // as opposed to automatically during shutdown, in which case we should inform
  37   // the browser we are no longer interested in that event.
  38   void DetachEvent(const v8::FunctionCallbackInfo<v8::Value>& args);
  39
  40   // MatcherID AttachFilteredEvent(string event_name, object filter)
  41   // |event_name| Name of the event to attach.
  42   // |filter| Which instances of the named event are we interested in.
  43   // returns the id assigned to the listener, which will be returned from calls
  44   // to MatchAgainstEventFilter where this listener matches.
  45   void AttachFilteredEvent(const v8::FunctionCallbackInfo<v8::Value>& args);
  46
  47   // void DetachFilteredEvent(int id, bool manual)
  48   // id     - Id of the event to detach.
  49   // manual - false if this is part of the extension unload process where all
  50   //          listeners are automatically detached.
  51   void DetachFilteredEvent(const v8::FunctionCallbackInfo<v8::Value>& args);
  52
  53   void MatchAgainstEventFilter(const v8::FunctionCallbackInfo<v8::Value>& args);
  54
  55   Dispatcher* dispatcher_;
  56   scoped_ptr<EventMatcher> ParseEventMatcher(
  57       base::DictionaryValue* filter_dict);
  58 };
  59
  60 }  // namespace extensions
  61
  62 #endif  // EXTENSIONS_RENDERER_EVENT_BINDINGS_H_