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