electron/atom/browser/api/event_emitter.h

// Copyright (c) 2014 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.

#ifndef ATOM_BROWSER_API_EVENT_EMITTER_H_
#define ATOM_BROWSER_API_EVENT_EMITTER_H_

#include <vector>

#include "native_mate/wrappable.h"

namespace base {
class ListValue;
}

namespace content {
class WebContents;
}

namespace IPC {
class Message;
}

namespace mate {

// Provide helperers to emit event in JavaScript.
class EventEmitter : public Wrappable {
 public:
  typedef std::vector<v8::Handle<v8::Value>> Arguments;

 protected:
  EventEmitter();

  // this.emit(name, new Event());
  bool Emit(const base::StringPiece& name);

  // this.emit(name, new Event(), args...);
  bool Emit(const base::StringPiece& name, const base::ListValue& args);

  // this.emit(name, new Event(sender, message), args...);
  bool Emit(const base::StringPiece& name, const base::ListValue& args,
            content::WebContents* sender, IPC::Message* message);

  // Lower level implementations.
  bool Emit(v8::Isolate* isolate,
            const base::StringPiece& name,
            Arguments args,
            content::WebContents* sender = nullptr,
            IPC::Message* message = nullptr);

 private:
  DISALLOW_COPY_AND_ASSIGN(EventEmitter);
};

}  // namespace mate

#endif  // ATOM_BROWSER_API_EVENT_EMITTER_H_