// Copyright (c) 2010 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/dom_ui/shown_sections_handler.h" #include "base/callback.h" #include "base/string_util.h" #include "base/values.h" #include "chrome/browser/metrics/user_metrics.h" #include "chrome/browser/pref_service.h" #include "chrome/browser/profile.h" #include "chrome/common/pref_names.h" namespace { // Will cause an UMA notification if the mode of the new tab page // was changed to hide/show the most visited thumbnails. void NotifySectionDisabled(int new_mode, int old_mode, Profile *profile) { // If the oldmode HAD either thumbs or lists visible. bool old_had_it = (old_mode & THUMB) || (old_mode & LIST); bool new_has_it = (new_mode & THUMB) || (new_mode & LIST); if (old_had_it && !new_has_it) { UserMetrics::RecordAction( UserMetricsAction("ShowSections_RecentSitesDisabled"), profile); } if (new_has_it && !old_had_it) { UserMetrics::RecordAction( UserMetricsAction("ShowSections_RecentSitesEnabled"), profile); } } } // namespace void ShownSectionsHandler::RegisterMessages() { dom_ui_->RegisterMessageCallback("getShownSections", NewCallback(this, &ShownSectionsHandler::HandleGetShownSections)); dom_ui_->RegisterMessageCallback("setShownSections", NewCallback(this, &ShownSectionsHandler::HandleSetShownSections)); } void ShownSectionsHandler::HandleGetShownSections(const Value* value) { const int mode = dom_ui_->GetProfile()->GetPrefs()-> GetInteger(prefs::kNTPShownSections); FundamentalValue mode_value(mode); dom_ui_->CallJavascriptFunction(L"onShownSections", mode_value); } void ShownSectionsHandler::HandleSetShownSections(const Value* value) { if (!value->IsType(Value::TYPE_LIST)) { NOTREACHED(); return; } const ListValue* list = static_cast(value); std::string mode_string; if (list->GetSize() < 1) { NOTREACHED() << "setShownSections called with too few arguments"; return; } bool r = list->GetString(0, &mode_string); DCHECK(r) << "Missing value in setShownSections from the NTP Most Visited."; int mode = StringToInt(mode_string); int old_mode = dom_ui_->GetProfile()->GetPrefs()->GetInteger( prefs::kNTPShownSections); if (old_mode != mode) { NotifySectionDisabled(mode, old_mode, dom_ui_->GetProfile()); dom_ui_->GetProfile()->GetPrefs()->SetInteger( prefs::kNTPShownSections, mode); } } // static void ShownSectionsHandler::RegisterUserPrefs(PrefService* prefs) { prefs->RegisterIntegerPref(prefs::kNTPShownSections, THUMB | RECENT | TIPS | SYNC); } // static void ShownSectionsHandler::MigrateUserPrefs(PrefService* prefs, int old_pref_version, int new_pref_version) { bool changed = false; int shown_sections = prefs->GetInteger(prefs::kNTPShownSections); if (old_pref_version < 1) { // TIPS was used in early builds of the NNTP but since it was removed before // Chrome 3.0 we want to ensure that it is shown by default. shown_sections |= TIPS | SYNC; changed = true; } if (old_pref_version < 2) { // LIST is no longer used. Change to THUMB. if (shown_sections | LIST) { shown_sections &= ~LIST; shown_sections |= THUMB; changed = true; } } if (changed) prefs->SetInteger(prefs::kNTPShownSections, shown_sections); }