mojo/fetcher/about_fetcher.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 MOJO_FETCHER_ABOUT_FETCHER_H_
   6 #define MOJO_FETCHER_ABOUT_FETCHER_H_
   7
   8 #include "mojo/shell/fetcher.h"
   9
  10 #include "base/macros.h"
  11 #include "mojo/services/network/public/interfaces/url_loader.mojom.h"
  12 #include "url/gurl.h"
  13
  14 namespace mojo {
  15 namespace fetcher {
  16
  17 // Implements Fetcher for about: URLs.
  18 class AboutFetcher : public shell::Fetcher {
  19  public:
  20   static const char kAboutScheme[];
  21   static const char kAboutBlankURL[];
  22
  23   static void Start(const GURL& url, const FetchCallback& loader_callback);
  24
  25  private:
  26   AboutFetcher(const GURL& url, const FetchCallback& loader_callback);
  27   ~AboutFetcher() override;
  28
  29   void BuildResponse();
  30
  31   // Must be called exactly once to run the loader callback (asynchrously). On
  32   // success, the ownership of this object is passed to the loader callback;
  33   // otherwise, the callback is run with a nullptr and this object is destroyed.
  34   void PostToRunCallback(bool success);
  35
  36   // shell::Fetcher implementation.
  37   const GURL& GetURL() const override;
  38   GURL GetRedirectURL() const override;
  39   GURL GetRedirectReferer() const override;
  40   URLResponsePtr AsURLResponse(base::TaskRunner* task_runner,
  41                                uint32_t skip) override;
  42   void AsPath(
  43       base::TaskRunner* task_runner,
  44       base::Callback<void(const base::FilePath&, bool)> callback) override;
  45   std::string MimeType() override;
  46   bool HasMojoMagic() override;
  47   bool PeekFirstLine(std::string* line) override;
  48
  49   const GURL url_;
  50   URLResponsePtr response_;
  51
  52   DISALLOW_COPY_AND_ASSIGN(AboutFetcher);
  53 };
  54
  55 }  // namespace fetcher
  56 }  // namespace mojo
  57
  58 #endif  // MOJO_FETCHER_ABOUT_FETCHER_H_