net/proxy/proxy_resolver_error_observer_mojo.h

   1 // Copyright 2015 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 NET_PROXY_PROXY_RESOLVER_ERROR_OBSERVER_MOJO_H_
   6 #define NET_PROXY_PROXY_RESOLVER_ERROR_OBSERVER_MOJO_H_
   7
   8 #include "base/memory/ref_counted.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "base/memory/weak_ptr.h"
  11 #include "base/single_thread_task_runner.h"
  12 #include "net/interfaces/proxy_resolver_service.mojom.h"
  13 #include "net/proxy/proxy_resolver_error_observer.h"
  14
  15 namespace net {
  16
  17 // An implementation of ProxyResolverErrorObserver that forwards errors to an
  18 // interfaces::ProxyResolverErrorObserver mojo interface.
  19 class ProxyResolverErrorObserverMojo : public ProxyResolverErrorObserver {
  20  public:
  21   static scoped_ptr<ProxyResolverErrorObserver> Create(
  22       interfaces::ProxyResolverErrorObserverPtr error_observer);
  23
  24   void OnPACScriptError(int line_number, const base::string16& error) override;
  25
  26  private:
  27   explicit ProxyResolverErrorObserverMojo(
  28       interfaces::ProxyResolverErrorObserverPtr error_observer);
  29   ~ProxyResolverErrorObserverMojo() override;
  30
  31   // |error_observer_| may only be accessed when running on |task_runner_|.
  32   interfaces::ProxyResolverErrorObserverPtr error_observer_;
  33   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
  34
  35   // Creating a new WeakPtr is only valid on the original thread, but copying an
  36   // existing WeakPtr is valid on any thread so keep |weak_this_| ready to copy.
  37   base::WeakPtr<ProxyResolverErrorObserverMojo> weak_this_;
  38   base::WeakPtrFactory<ProxyResolverErrorObserverMojo> weak_factory_;
  39 };
  40
  41 }  // namespace net
  42
  43 #endif  // NET_PROXY_PROXY_RESOLVER_ERROR_OBSERVER_MOJO_H_