chrome/browser/ui/webui/chromeos/slow_trace_ui.h

   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 CHROME_BROWSER_UI_WEBUI_CHROMEOS_SLOW_TRACE_UI_H_
   6 #define CHROME_BROWSER_UI_WEBUI_CHROMEOS_SLOW_TRACE_UI_H_
   7
   8 #include <string>
   9
  10 #include "base/compiler_specific.h"
  11 #include "content/public/browser/url_data_source.h"
  12 #include "content/public/browser/web_ui_controller.h"
  13 #include "ui/base/layout.h"
  14
  15 namespace base {
  16 class RefCountedMemory;
  17 class RefCountedString;
  18 }
  19
  20 namespace chromeos {
  21
  22 // This class provides the source for chrome://slow_trace/.  It needs to be a
  23 // separate handler that chrome://slow, because URLDataSource and
  24 // WebUIDataSource are not descended from each other, and WebUIDataSource
  25 // doesn't allow the MimeType to be dynamically specified.
  26 class SlowTraceSource : public content::URLDataSource {
  27  public:
  28   SlowTraceSource();
  29
  30   // content::URLDataSource implementation.
  31   std::string GetSource() const override;
  32   void StartDataRequest(
  33       const std::string& path,
  34       int render_process_id,
  35       int render_frame_id,
  36       const content::URLDataSource::GotDataCallback& callback) override;
  37   std::string GetMimeType(const std::string& path) const override;
  38
  39  private:
  40   ~SlowTraceSource() override;
  41
  42   void OnGetTraceData(const content::URLDataSource::GotDataCallback& callback,
  43                       scoped_refptr<base::RefCountedString> trace_data);
  44
  45   DISALLOW_COPY_AND_ASSIGN(SlowTraceSource);
  46 };
  47
  48 class SlowTraceController : public content::WebUIController {
  49  public:
  50   explicit SlowTraceController(content::WebUI* web_ui);
  51
  52  private:
  53   DISALLOW_COPY_AND_ASSIGN(SlowTraceController);
  54 };
  55
  56 } // namespace chromeos
  57
  58 #endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_SLOW_TRACE_UI_H_