text: // Copyright 2014 The Chromium Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  
  #ifndef CONTENT_BROWSER_DEVTOOLS_WORKER_DEVTOOLS_AGENT_HOST_H_
  #define CONTENT_BROWSER_DEVTOOLS_WORKER_DEVTOOLS_AGENT_HOST_H_
  
  #include "base/macros.h"
  #include "content/browser/devtools/devtools_agent_host_impl.h"
  #include "content/common/content_export.h"
  #include "ipc/ipc_listener.h"
  
  namespace content {
  
  class BrowserContext;
  
  class CONTENT_EXPORT WorkerDevToolsAgentHost : public DevToolsAgentHostImpl,
                                                 public IPC::Listener {
   public:
    typedef std::pair<int, int> WorkerId;
  
    // DevToolsAgentHost override.
    BrowserContext* GetBrowserContext() override;
  
    // DevToolsAgentHostImpl overrides.
    void AttachSession(DevToolsSession* session) override;
    void DetachSession(int session_id) override;
    bool DispatchProtocolMessage(
        DevToolsSession* session,
        const std::string& message) override;
  
    // IPC::Listener implementation.
    bool OnMessageReceived(const IPC::Message& msg) override;
  
    void PauseForDebugOnStart();
    bool IsPausedForDebugOnStart();
    bool IsReadyForInspection();
  
    void WorkerReadyForInspection();
    void WorkerRestarted(WorkerId worker_id);
    void WorkerDestroyed();
    bool IsTerminated();
  
   protected:
    explicit WorkerDevToolsAgentHost(WorkerId worker_id);
    ~WorkerDevToolsAgentHost() override;
  
    enum WorkerState {
      WORKER_UNINSPECTED,
      WORKER_INSPECTED,
      WORKER_TERMINATED,
      WORKER_PAUSED_FOR_DEBUG_ON_START,
      WORKER_READY_FOR_DEBUG_ON_START,
      WORKER_PAUSED_FOR_REATTACH,
    };
  
    virtual void OnAttachedStateChanged(bool attached);
    const WorkerId& worker_id() const { return worker_id_; }
  
   private:
    friend class SharedWorkerDevToolsManagerTest;
  
    void AttachToWorker();
    void DetachFromWorker();
    void WorkerCreated();
    void OnDispatchOnInspectorFrontend(const DevToolsMessageChunk& message);
  
    WorkerState state_;
    WorkerId worker_id_;
    DISALLOW_COPY_AND_ASSIGN(WorkerDevToolsAgentHost);
  };
  
  }  // namespace content
  
  #endif  // CONTENT_BROWSER_DEVTOOLS_WORKER_DEVTOOLS_AGENT_HOST_H_
  