chrome/browser/ui/webui/gesture_config_ui.cc

   1 // Copyright (c) 2012 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 #include "chrome/browser/ui/webui/gesture_config_ui.h"
   6
   7 #include "base/bind.h"
   8 #include "base/prefs/pref_service.h"
   9 #include "base/values.h"
  10 #include "chrome/browser/browser_process.h"
  11 #include "chrome/browser/profiles/profile.h"
  12 #include "chrome/common/url_constants.h"
  13 #include "content/public/browser/web_ui.h"
  14 #include "content/public/browser/web_ui_data_source.h"
  15 #include "grit/browser_resources.h"
  16 #include "grit/generated_resources.h"
  17
  18 /**
  19  * WebUI for configuring 'gesture.*' preference values used by
  20  * Chrome's gesture recognition system.
  21  */
  22 GestureConfigUI::GestureConfigUI(content::WebUI* web_ui)
  23     : content::WebUIController(web_ui) {
  24   // Set up the chrome://gesture-config source.
  25   content::WebUIDataSource* html_source =
  26       content::WebUIDataSource::Create(chrome::kChromeUIGestureConfigHost);
  27
  28   // Register callback handlers.
  29   web_ui->RegisterMessageCallback(
  30       "updatePreferenceValue",
  31       base::Bind(&GestureConfigUI::UpdatePreferenceValue,
  32                  base::Unretained(this)));
  33   web_ui->RegisterMessageCallback(
  34       "resetPreferenceValue",
  35       base::Bind(&GestureConfigUI::ResetPreferenceValue,
  36                  base::Unretained(this)));
  37   web_ui->RegisterMessageCallback(
  38       "setPreferenceValue",
  39       base::Bind(&GestureConfigUI::SetPreferenceValue,
  40                  base::Unretained(this)));
  41
  42   // Add required resources.
  43   html_source->AddResourcePath("gesture_config.css", IDR_GESTURE_CONFIG_CSS);
  44   html_source->AddResourcePath("gesture_config.js", IDR_GESTURE_CONFIG_JS);
  45   html_source->SetDefaultResource(IDR_GESTURE_CONFIG_HTML);
  46
  47   Profile* profile = Profile::FromWebUI(web_ui);
  48   content::WebUIDataSource::Add(profile, html_source);
  49 }
  50
  51 GestureConfigUI::~GestureConfigUI() {
  52 }
  53
  54 void GestureConfigUI::UpdatePreferenceValue(const base::ListValue* args) {
  55   std::string pref_name;
  56
  57   if (!args->GetString(0, &pref_name)) return;
  58
  59   PrefService* prefs = Profile::FromWebUI(web_ui())->GetPrefs();
  60   const PrefService::Preference* pref =
  61       prefs->FindPreference(pref_name.c_str());
  62
  63   base::StringValue js_pref_name(pref_name);
  64   base::FundamentalValue js_pref_value(prefs->GetDouble(pref_name.c_str()));
  65   base::FundamentalValue js_pref_default(pref->IsDefaultValue());
  66
  67   web_ui()->CallJavascriptFunction(
  68       "gesture_config.updatePreferenceValueResult",
  69       js_pref_name,
  70       js_pref_value,
  71       js_pref_default);
  72 }
  73
  74 void GestureConfigUI::ResetPreferenceValue(const base::ListValue* args) {
  75   std::string pref_name;
  76
  77   if (!args->GetString(0, &pref_name)) return;
  78
  79   PrefService* prefs = Profile::FromWebUI(web_ui())->GetPrefs();
  80
  81   prefs->ClearPref(pref_name.c_str());
  82   UpdatePreferenceValue(args);
  83 }
  84
  85 void GestureConfigUI::SetPreferenceValue(const base::ListValue* args) {
  86   std::string pref_name;
  87   double value;
  88
  89   if (!args->GetString(0, &pref_name) || !args->GetDouble(1, &value)) return;
  90
  91   PrefService* prefs = Profile::FromWebUI(web_ui())->GetPrefs();
  92
  93   const PrefService::Preference* pref =
  94       prefs->FindPreference(pref_name.c_str());
  95   switch (pref->GetType()) {
  96     case base::Value::TYPE_INTEGER:
  97       prefs->SetInteger(pref_name.c_str(), static_cast<int>(value));
  98       break;
  99     case base::Value::TYPE_DOUBLE:
 100       prefs->SetDouble(pref_name.c_str(), value);
 101       break;
 102     default:
 103       NOTREACHED();
 104   }
 105 }
 106