chrome/browser/ui/webui/chromeos/salsa_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_SALSA_UI_H_
   6 #define CHROME_BROWSER_UI_WEBUI_CHROMEOS_SALSA_UI_H_
   7
   8 #include <map>
   9
  10 #include "base/values.h"
  11 #include "chrome/browser/profiles/profile.h"
  12 #include "content/public/browser/web_ui_controller.h"
  13
  14 namespace base {
  15 class ListValue;
  16 class Value;
  17 }  // namespace base
  18
  19 // The WebUI for 'chrome://salsa' -- a user front end for the touch UI
  20 // blind user studies.  I does this by setting gesture preference values
  21 // without the user knowing which ones and having them try out various
  22 // settings to see which results in a better experience for them.
  23 class SalsaUI : public content::WebUIController {
  24  public:
  25   // Constructs a new GestureConfig for the specified |web_ui|.
  26   explicit SalsaUI(content::WebUI* web_ui);
  27   ~SalsaUI() override;
  28
  29  private:
  30   // Set a preference setting's value.
  31   // Two parameters are provided in a JS list: prefName and value, the
  32   // key of the preference value to be set, and the value it's to be set to.
  33   void SetPreferenceValue(const base::ListValue* args);
  34
  35   // Record the current value for a preference key and store the key/value pair
  36   // in the member variable orig_values_.
  37   void BackupPreferenceValue(const base::ListValue* args);
  38
  39   // Check and see if a key is on the whitelist.  Returns the index into
  40   // the whitelist on success and -1 on failure.
  41   int WhitelistIndex(const char* key) const;
  42
  43   std::map<int, const base::Value*> orig_values_;
  44
  45   DISALLOW_COPY_AND_ASSIGN(SalsaUI);
  46 };
  47
  48 #endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_SALSA_UI_H_
  49