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      1 // Copyright 2013 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 MOJO_SHELL_LOADER_H_
      6 #define MOJO_SHELL_LOADER_H_
      7 
      8 #include "base/files/file_path.h"
      9 #include "base/memory/scoped_ptr.h"
     10 #include "base/single_thread_task_runner.h"
     11 #include "base/threading/thread.h"
     12 #include "mojo/shell/url_request_context_getter.h"
     13 #include "net/url_request/url_fetcher.h"
     14 #include "net/url_request/url_fetcher_delegate.h"
     15 #include "url/gurl.h"
     16 
     17 namespace net {
     18 class NetworkDelegate;
     19 }
     20 
     21 namespace mojo {
     22 namespace shell {
     23 
     24 class Loader {
     25  public:
     26   class Delegate {
     27    public:
     28     virtual void DidCompleteLoad(const GURL& app_url,
     29                                  const base::FilePath& app_path) = 0;
     30 
     31    protected:
     32     virtual ~Delegate();
     33   };
     34 
     35   class Job : public net::URLFetcherDelegate {
     36    public:
     37     // You can cancel a job by deleting it.
     38     virtual ~Job();
     39 
     40    private:
     41     friend class Loader;
     42 
     43     // You can create a job using Loader::Load.
     44     Job(const GURL& app_url, Delegate* delegate);
     45     virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
     46 
     47     scoped_ptr<net::URLFetcher> fetcher_;
     48     Delegate* delegate_;
     49 
     50     DISALLOW_COPY_AND_ASSIGN(Job);
     51   };
     52 
     53   Loader(base::SingleThreadTaskRunner* network_runner,
     54          base::SingleThreadTaskRunner* file_runner,
     55          base::MessageLoopProxy* cache_runner,
     56          scoped_ptr<net::NetworkDelegate> network_delegate,
     57          base::FilePath base_path);
     58   ~Loader();
     59 
     60   scoped_ptr<Job> Load(const GURL& app_url, Delegate* delegate);
     61 
     62  private:
     63   scoped_refptr<base::SingleThreadTaskRunner> file_runner_;
     64   scoped_refptr<URLRequestContextGetter> url_request_context_getter_;
     65 
     66   DISALLOW_COPY_AND_ASSIGN(Loader);
     67 };
     68 
     69 }  // namespace shell
     70 }  // namespace mojo
     71 
     72 #endif  // MOJO_SHELL_LOADER_H_
     73