chrome/browser/ui/webui/theme_source.h

// Copyright (c) 2012 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 CHROME_BROWSER_UI_WEBUI_THEME_SOURCE_H_
#define CHROME_BROWSER_UI_WEBUI_THEME_SOURCE_H_

#include <string>

#include "base/compiler_specific.h"
#include "base/memory/ref_counted.h"
#include "content/public/browser/url_data_source.h"
#include "ui/base/layout.h"

class Profile;

namespace base {
class RefCountedMemory;
}

class ThemeSource : public content::URLDataSource {
 public:
  explicit ThemeSource(Profile* profile);
  virtual ~ThemeSource();

  // content::URLDataSource implementation.
  virtual std::string GetSource() const OVERRIDE;
  virtual void StartDataRequest(
      const std::string& path,
      int render_process_id,
      int render_view_id,
      const content::URLDataSource::GotDataCallback& callback) OVERRIDE;
  virtual std::string GetMimeType(const std::string& path) const OVERRIDE;
  virtual base::MessageLoop* MessageLoopForRequestPath(
      const std::string& path) const OVERRIDE;
  virtual bool ShouldReplaceExistingSource() const OVERRIDE;
  virtual bool ShouldServiceRequest(
      const net::URLRequest* request) const OVERRIDE;

 private:
  // Fetch and send the theme bitmap.
  void SendThemeBitmap(
      const content::URLDataSource::GotDataCallback& callback,
      int resource_id,
      ui::ScaleFactor scale_factor);

  // The original profile (never an OTR profile).
  Profile* profile_;

  // We grab the CSS early so we don't have to go back to the UI thread later.
  scoped_refptr<base::RefCountedMemory> css_bytes_;

  DISALLOW_COPY_AND_ASSIGN(ThemeSource);
};

#endif  // CHROME_BROWSER_UI_WEBUI_THEME_SOURCE_H_