src/chrome/browser/ui/webui/options/handler_options_handler.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/options/handler_options_handler.h"
   6
   7 #include <vector>
   8
   9 #include "base/bind.h"
  10 #include "base/bind_helpers.h"
  11 #include "base/prefs/pref_service.h"
  12 #include "base/strings/utf_string_conversions.h"
  13 #include "base/values.h"
  14 #include "chrome/browser/chrome_notification_types.h"
  15 #include "chrome/browser/custom_handlers/protocol_handler_registry_factory.h"
  16 #include "chrome/browser/google/google_util.h"
  17 #include "chrome/browser/profiles/profile.h"
  18 #include "content/public/browser/web_ui.h"
  19 #include "grit/generated_resources.h"
  20 #include "ui/base/l10n/l10n_util.h"
  21
  22 namespace options {
  23
  24 namespace {
  25
  26 const char kHandlersLearnMoreUrl[] =
  27     "https://support.google.com/chromebook/answer/1382847";
  28
  29 }  // namespace
  30
  31 HandlerOptionsHandler::HandlerOptionsHandler() {
  32 }
  33
  34 HandlerOptionsHandler::~HandlerOptionsHandler() {
  35 }
  36
  37 void HandlerOptionsHandler::GetLocalizedValues(
  38     base::DictionaryValue* localized_strings) {
  39   DCHECK(localized_strings);
  40
  41   static OptionsStringResource resources[] = {
  42       { "handlers_tab_label", IDS_HANDLERS_TAB_LABEL },
  43       { "handlers_allow", IDS_HANDLERS_ALLOW_RADIO },
  44       { "handlers_block", IDS_HANDLERS_DONOTALLOW_RADIO },
  45       { "handlers_type_column_header", IDS_HANDLERS_TYPE_COLUMN_HEADER },
  46       { "handlers_site_column_header", IDS_HANDLERS_SITE_COLUMN_HEADER },
  47       { "handlers_remove_link", IDS_HANDLERS_REMOVE_HANDLER_LINK },
  48       { "handlers_none_handler", IDS_HANDLERS_NONE_HANDLER },
  49       { "handlers_active_heading", IDS_HANDLERS_ACTIVE_HEADING },
  50       { "handlers_ignored_heading", IDS_HANDLERS_IGNORED_HEADING },
  51   };
  52   RegisterTitle(localized_strings, "handlersPage",
  53                 IDS_HANDLER_OPTIONS_WINDOW_TITLE);
  54   RegisterStrings(localized_strings, resources, arraysize(resources));
  55
  56   localized_strings->SetString(
  57       "handlers_learn_more_url",
  58       google_util::StringAppendGoogleLocaleParam(kHandlersLearnMoreUrl));
  59 }
  60
  61 void HandlerOptionsHandler::InitializeHandler() {
  62   notification_registrar_.Add(
  63       this, chrome::NOTIFICATION_PROTOCOL_HANDLER_REGISTRY_CHANGED,
  64       content::Source<Profile>(Profile::FromWebUI(web_ui())));
  65 }
  66
  67 void HandlerOptionsHandler::InitializePage() {
  68   UpdateHandlerList();
  69 }
  70
  71 void HandlerOptionsHandler::RegisterMessages() {
  72   web_ui()->RegisterMessageCallback("clearDefault",
  73       base::Bind(&HandlerOptionsHandler::ClearDefault,
  74                  base::Unretained(this)));
  75   web_ui()->RegisterMessageCallback("removeHandler",
  76       base::Bind(&HandlerOptionsHandler::RemoveHandler,
  77                  base::Unretained(this)));
  78   web_ui()->RegisterMessageCallback("setHandlersEnabled",
  79       base::Bind(&HandlerOptionsHandler::SetHandlersEnabled,
  80                  base::Unretained(this)));
  81   web_ui()->RegisterMessageCallback("setDefault",
  82       base::Bind(&HandlerOptionsHandler::SetDefault,
  83                  base::Unretained(this)));
  84   web_ui()->RegisterMessageCallback("removeIgnoredHandler",
  85       base::Bind(&HandlerOptionsHandler::RemoveIgnoredHandler,
  86                  base::Unretained(this)));
  87 }
  88
  89 ProtocolHandlerRegistry* HandlerOptionsHandler::GetProtocolHandlerRegistry() {
  90   return ProtocolHandlerRegistryFactory::GetForProfile(
  91       Profile::FromWebUI(web_ui()));
  92 }
  93
  94 static void GetHandlersAsListValue(
  95     const ProtocolHandlerRegistry::ProtocolHandlerList& handlers,
  96     base::ListValue* handler_list) {
  97   ProtocolHandlerRegistry::ProtocolHandlerList::const_iterator handler;
  98   for (handler = handlers.begin(); handler != handlers.end(); ++handler) {
  99     base::ListValue* handlerValue = new base::ListValue();
 100     handlerValue->Append(new base::StringValue(handler->protocol()));
 101     handlerValue->Append(new base::StringValue(handler->url().spec()));
 102     handlerValue->Append(new base::StringValue(handler->title()));
 103     handler_list->Append(handlerValue);
 104   }
 105 }
 106
 107 void HandlerOptionsHandler::GetHandlersForProtocol(
 108     const std::string& protocol,
 109     base::DictionaryValue* handlers_value) {
 110   ProtocolHandlerRegistry* registry = GetProtocolHandlerRegistry();
 111   handlers_value->SetString("protocol", protocol);
 112   handlers_value->SetInteger("default_handler",
 113       registry->GetHandlerIndex(protocol));
 114
 115   base::ListValue* handlers_list = new base::ListValue();
 116   GetHandlersAsListValue(registry->GetHandlersFor(protocol), handlers_list);
 117   handlers_value->Set("handlers", handlers_list);
 118 }
 119
 120 void HandlerOptionsHandler::GetIgnoredHandlers(base::ListValue* handlers) {
 121   ProtocolHandlerRegistry* registry = GetProtocolHandlerRegistry();
 122   ProtocolHandlerRegistry::ProtocolHandlerList ignored_handlers =
 123       registry->GetIgnoredHandlers();
 124   return GetHandlersAsListValue(ignored_handlers, handlers);
 125 }
 126
 127 void HandlerOptionsHandler::UpdateHandlerList() {
 128   ProtocolHandlerRegistry* registry = GetProtocolHandlerRegistry();
 129   std::vector<std::string> protocols;
 130   registry->GetRegisteredProtocols(&protocols);
 131
 132   base::ListValue handlers;
 133   for (std::vector<std::string>::iterator protocol = protocols.begin();
 134        protocol != protocols.end(); protocol++) {
 135     base::DictionaryValue* handler_value = new base::DictionaryValue();
 136     GetHandlersForProtocol(*protocol, handler_value);
 137     handlers.Append(handler_value);
 138   }
 139
 140   scoped_ptr<base::ListValue> ignored_handlers(new base::ListValue());
 141   GetIgnoredHandlers(ignored_handlers.get());
 142   web_ui()->CallJavascriptFunction("HandlerOptions.setHandlers", handlers);
 143   web_ui()->CallJavascriptFunction("HandlerOptions.setIgnoredHandlers",
 144                                    *ignored_handlers);
 145 }
 146
 147 void HandlerOptionsHandler::RemoveHandler(const base::ListValue* args) {
 148   const base::ListValue* list;
 149   if (!args->GetList(0, &list)) {
 150     NOTREACHED();
 151     return;
 152   }
 153
 154   ProtocolHandler handler(ParseHandlerFromArgs(list));
 155   GetProtocolHandlerRegistry()->RemoveHandler(handler);
 156
 157   // No need to call UpdateHandlerList() - we should receive a notification
 158   // that the ProtocolHandlerRegistry has changed and we will update the view
 159   // then.
 160 }
 161
 162 void HandlerOptionsHandler::RemoveIgnoredHandler(const base::ListValue* args) {
 163   const base::ListValue* list;
 164   if (!args->GetList(0, &list)) {
 165     NOTREACHED();
 166     return;
 167   }
 168
 169   ProtocolHandler handler(ParseHandlerFromArgs(list));
 170   GetProtocolHandlerRegistry()->RemoveIgnoredHandler(handler);
 171 }
 172
 173 void HandlerOptionsHandler::SetHandlersEnabled(const base::ListValue* args) {
 174   bool enabled = true;
 175   CHECK(args->GetBoolean(0, &enabled));
 176   if (enabled)
 177     GetProtocolHandlerRegistry()->Enable();
 178   else
 179     GetProtocolHandlerRegistry()->Disable();
 180 }
 181
 182 void HandlerOptionsHandler::ClearDefault(const base::ListValue* args) {
 183   const base::Value* value;
 184   CHECK(args->Get(0, &value));
 185   std::string protocol_to_clear;
 186   CHECK(value->GetAsString(&protocol_to_clear));
 187   GetProtocolHandlerRegistry()->ClearDefault(protocol_to_clear);
 188 }
 189
 190 void HandlerOptionsHandler::SetDefault(const base::ListValue* args) {
 191   const base::ListValue* list;
 192   CHECK(args->GetList(0, &list));
 193   const ProtocolHandler& handler(ParseHandlerFromArgs(list));
 194   CHECK(!handler.IsEmpty());
 195   GetProtocolHandlerRegistry()->OnAcceptRegisterProtocolHandler(handler);
 196 }
 197
 198 ProtocolHandler HandlerOptionsHandler::ParseHandlerFromArgs(
 199     const base::ListValue* args) const {
 200   base::string16 protocol;
 201   base::string16 url;
 202   base::string16 title;
 203   bool ok = args->GetString(0, &protocol) && args->GetString(1, &url) &&
 204     args->GetString(2, &title);
 205   if (!ok)
 206     return ProtocolHandler::EmptyProtocolHandler();
 207   return ProtocolHandler::CreateProtocolHandler(base::UTF16ToUTF8(protocol),
 208                                                 GURL(base::UTF16ToUTF8(url)),
 209                                                 title);
 210 }
 211
 212 void HandlerOptionsHandler::Observe(
 213     int type,
 214     const content::NotificationSource& source,
 215     const content::NotificationDetails& details) {
 216   if (type == chrome::NOTIFICATION_PROTOCOL_HANDLER_REGISTRY_CHANGED)
 217     UpdateHandlerList();
 218   else
 219     NOTREACHED();
 220 }
 221
 222 }  // namespace options