Handler settings page.

chrome/browser/ui/webui/options/handler_options_handler.cc

+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/ui/webui/options/handler_options_handler.h"
+
+#include "base/utf_string_conversions.h"
+#include "base/values.h"
+#include "chrome/browser/prefs/pref_service.h"
+#include "chrome/browser/profiles/profile.h"
+#include "grit/generated_resources.h"
+#include "ui/base/l10n/l10n_util.h"
+
+
+HandlerOptionsHandler::HandlerOptionsHandler() {
+}
+
+HandlerOptionsHandler::~HandlerOptionsHandler() {
+}
+
+void HandlerOptionsHandler::GetLocalizedValues(
+    DictionaryValue* localized_strings) {
+  DCHECK(localized_strings);
+
+  static OptionsStringResource resources[] = {
+    { "handlers_tab_label", IDS_HANDLERS_TAB_LABEL },
+    { "handlers_allow", IDS_HANDLERS_ALLOW_RADIO },
+    { "handlers_block", IDS_HANDLERS_DONOTALLOW_RADIO },
+    { "handlers_type_column_header", IDS_HANDLERS_TYPE_COLUMN_HEADER },
+    { "handlers_site_column_header", IDS_HANDLERS_SITE_COLUMN_HEADER },
+    { "handlers_remove_link", IDS_HANDLERS_REMOVE_HANDLER_LINK },
+  };
+  RegisterTitle(localized_strings, "handlersPage",
+                IDS_HANDLER_OPTIONS_WINDOW_TITLE);
+  RegisterStrings(localized_strings, resources, arraysize(resources));
+}
+
+void HandlerOptionsHandler::Initialize() {
+  UpdateHandlerList();
+  notification_registrar_.Add(
+      this, NotificationType::PROTOCOL_HANDLER_REGISTRY_CHANGED,
+      NotificationService::AllSources());
+}
+
+void HandlerOptionsHandler::RegisterMessages() {
+  DCHECK(web_ui_);
+  web_ui_->RegisterMessageCallback("removeHandler",
+      NewCallback(this, &HandlerOptionsHandler::RemoveHandler));
+  web_ui_->RegisterMessageCallback("setHandlersEnabled",
+      NewCallback(this, &HandlerOptionsHandler::SetHandlersEnabled));
+  web_ui_->RegisterMessageCallback("setDefault",
+      NewCallback(this, &HandlerOptionsHandler::SetDefault));
+}
+
+ProtocolHandlerRegistry* HandlerOptionsHandler::GetProtocolHandlerRegistry() {
+  DCHECK(web_ui_);
+  return web_ui_->GetProfile()->GetProtocolHandlerRegistry();
+}
+
+DictionaryValue* HandlerOptionsHandler::GetHandlersForProtocol(
+    const std::string& protocol) {
+  ProtocolHandlerRegistry* registry = GetProtocolHandlerRegistry();
+  DictionaryValue* handlers_value = new DictionaryValue();
+  handlers_value->SetString("protocol", protocol);
+  handlers_value->SetInteger("default_handler",
+      registry->GetHandlerIndex(protocol));
+
+  ListValue* handler_list = new ListValue();
+  const ProtocolHandlerRegistry::ProtocolHandlerList* handlers =
+      registry->GetHandlersFor(protocol);
+  ProtocolHandlerRegistry::ProtocolHandlerList::const_iterator handler;
+  for (handler = handlers->begin(); handler != handlers->end(); ++handler) {
+    ListValue* handlerValue = new ListValue();
+    handlerValue->Append(Value::CreateStringValue(handler->url().spec()));
+    handlerValue->Append(Value::CreateStringValue(handler->title()));
+    handler_list->Append(handlerValue);
+  }
+  handlers_value->Set("handlers", handler_list);
+  return handlers_value;
+}
+
+void HandlerOptionsHandler::UpdateHandlerList() {
+  ProtocolHandlerRegistry* registry = GetProtocolHandlerRegistry();
+  std::vector<std::string> protocols;
+  registry->GetHandledProtocols(&protocols);
+
+  ListValue handlers;
+  for (std::vector<std::string>::iterator protocol = protocols.begin();
+       protocol != protocols.end(); protocol++) {
+    handlers.Append(GetHandlersForProtocol(*protocol));
+  }
+
+  web_ui_->CallJavascriptFunction("HandlerOptions.setHandlers", handlers);
+}
+
+void HandlerOptionsHandler::RemoveHandler(const ListValue* args) {
+  ListValue* list;
+  if (!args->GetList(0, &list)) {
+    NOTREACHED();
+    return;
+  }
+
+  ProtocolHandler handler(ParseHandlerFromArgs(list));
+  GetProtocolHandlerRegistry()->RemoveHandler(handler);
+
+  // No need to call UpdateHandlerList() - we should receive a notification
+  // that the ProtocolHandlerRegistry has changed and we will update the view
+  // then.
+}
+
+void HandlerOptionsHandler::SetHandlersEnabled(const ListValue* args) {
+  bool enabled = true;
+  CHECK(args->GetBoolean(0, &enabled));
+  if (enabled)
+    GetProtocolHandlerRegistry()->Enable();
+  else
+    GetProtocolHandlerRegistry()->Disable();
+}
+
+void HandlerOptionsHandler::SetDefault(const ListValue* args) {
+  Value* value;
+  CHECK(args->Get(0, &value));
+  ListValue* list;
+  CHECK(args->GetList(0, &list));
+  const ProtocolHandler& handler(ParseHandlerFromArgs(list));
+  CHECK(!handler.IsEmpty());
+  GetProtocolHandlerRegistry()->SetDefault(handler);
+}
+
+ProtocolHandler HandlerOptionsHandler::ParseHandlerFromArgs(
+    const ListValue* args) const {
+  string16 protocol;
+  string16 url;
+  string16 title;
+  bool ok = true;
+  ok = ok && args->GetString(0, &protocol);
+  ok = ok && args->GetString(1, &url);
+  ok = ok && args->GetString(2, &title);
+  if (!ok)
+    return ProtocolHandler::EmptyProtocolHandler();
+  return ProtocolHandler::CreateProtocolHandler(UTF16ToUTF8(protocol),
+                                                GURL(UTF16ToUTF8(url)),
+                                                title);
+}
+
+void HandlerOptionsHandler::Observe(NotificationType type,
+                                    const NotificationSource& source,
+                                    const NotificationDetails& details) {
+  if (type == NotificationType::PROTOCOL_HANDLER_REGISTRY_CHANGED)
+    UpdateHandlerList();
+  else
+    NOTREACHED();
+}