electron/atom/browser/web_contents_preferences.h

// Copyright (c) 2015 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.

#ifndef ATOM_BROWSER_WEB_CONTENTS_PREFERENCES_H_
#define ATOM_BROWSER_WEB_CONTENTS_PREFERENCES_H_

#include "base/values.h"
#include "content/public/browser/web_contents_user_data.h"

namespace base {
class CommandLine;
}

namespace content {
struct WebPreferences;
}

namespace atom {

// Stores and applies the preferences of WebContents.
class WebContentsPreferences
    : public content::WebContentsUserData<WebContentsPreferences> {
 public:
  // Get the preferences of |web_contents|.
  static WebContentsPreferences* From(content::WebContents* web_contents);

  // Append command paramters according to |web_contents|'s preferences.
  static void AppendExtraCommandLineSwitches(
      content::WebContents* web_contents, base::CommandLine* command_line);

  // Modify the WebPreferences according to |web_contents|'s preferences.
  static void OverrideWebkitPrefs(
      content::WebContents* web_contents, content::WebPreferences* prefs);

  WebContentsPreferences(content::WebContents* web_contents,
                         base::DictionaryValue&& web_preferences);
  ~WebContentsPreferences() override;

  // $.extend(|web_preferences_|, |new_web_preferences|).
  void Merge(const base::DictionaryValue& new_web_preferences);

 private:
  friend class content::WebContentsUserData<WebContentsPreferences>;

  base::DictionaryValue web_preferences_;

  DISALLOW_COPY_AND_ASSIGN(WebContentsPreferences);
};

}  // namespace atom

#endif  // ATOM_BROWSER_WEB_CONTENTS_PREFERENCES_H_