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// 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/flags_ui.h"
#include <string>
#include "base/singleton.h"
#include "base/values.h"
#include "chrome/browser/about_flags.h"
#include "chrome/browser/browser_list.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/prefs/pref_service.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/webui/chrome_url_data_manager.h"
#include "chrome/common/jstemplate_builder.h"
#include "chrome/common/pref_names.h"
#include "chrome/common/url_constants.h"
#include "content/browser/browser_thread.h"
#include "content/browser/tab_contents/tab_contents.h"
#include "grit/browser_resources.h"
#include "grit/chromium_strings.h"
#include "grit/generated_resources.h"
#include "grit/theme_resources.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/resource/resource_bundle.h"
namespace {
///////////////////////////////////////////////////////////////////////////////
//
// FlagsUIHTMLSource
//
///////////////////////////////////////////////////////////////////////////////
class FlagsUIHTMLSource : public ChromeURLDataManager::DataSource {
public:
FlagsUIHTMLSource()
: DataSource(chrome::kChromeUIFlagsHost, MessageLoop::current()) {}
// Called when the network layer has requested a resource underneath
// the path we registered.
virtual void StartDataRequest(const std::string& path,
bool is_off_the_record,
int request_id);
virtual std::string GetMimeType(const std::string&) const {
return "text/html";
}
private:
~FlagsUIHTMLSource() {}
DISALLOW_COPY_AND_ASSIGN(FlagsUIHTMLSource);
};
void FlagsUIHTMLSource::StartDataRequest(const std::string& path,
bool is_off_the_record,
int request_id) {
// Strings used in the JsTemplate file.
DictionaryValue localized_strings;
localized_strings.SetString("flagsLongTitle",
l10n_util::GetStringUTF16(IDS_FLAGS_LONG_TITLE));
localized_strings.SetString("flagsTableTitle",
l10n_util::GetStringUTF16(IDS_FLAGS_TABLE_TITLE));
localized_strings.SetString("flagsNoExperimentsAvailable",
l10n_util::GetStringUTF16(IDS_FLAGS_NO_EXPERIMENTS_AVAILABLE));
localized_strings.SetString("flagsWarningHeader", l10n_util::GetStringUTF16(
IDS_FLAGS_WARNING_HEADER));
localized_strings.SetString("flagsBlurb", l10n_util::GetStringUTF16(
IDS_FLAGS_WARNING_TEXT));
localized_strings.SetString("flagsRestartNotice", l10n_util::GetStringFUTF16(
IDS_FLAGS_RELAUNCH_NOTICE,
l10n_util::GetStringUTF16(IDS_PRODUCT_NAME)));
localized_strings.SetString("flagsRestartButton",
l10n_util::GetStringUTF16(IDS_FLAGS_RELAUNCH_BUTTON));
localized_strings.SetString("disable",
l10n_util::GetStringUTF16(IDS_FLAGS_DISABLE));
localized_strings.SetString("enable",
l10n_util::GetStringUTF16(IDS_FLAGS_ENABLE));
ChromeURLDataManager::DataSource::SetFontAndTextDirection(&localized_strings);
static const base::StringPiece flags_html(
ResourceBundle::GetSharedInstance().GetRawDataResource(IDR_FLAGS_HTML));
std::string full_html(flags_html.data(), flags_html.size());
jstemplate_builder::AppendJsonHtml(&localized_strings, &full_html);
jstemplate_builder::AppendI18nTemplateSourceHtml(&full_html);
jstemplate_builder::AppendI18nTemplateProcessHtml(&full_html);
jstemplate_builder::AppendJsTemplateSourceHtml(&full_html);
scoped_refptr<RefCountedBytes> html_bytes(new RefCountedBytes);
html_bytes->data.resize(full_html.size());
std::copy(full_html.begin(), full_html.end(), html_bytes->data.begin());
SendResponse(request_id, html_bytes);
}
////////////////////////////////////////////////////////////////////////////////
//
// FlagsDOMHandler
//
////////////////////////////////////////////////////////////////////////////////
// The handler for Javascript messages for the about:flags page.
class FlagsDOMHandler : public WebUIMessageHandler {
public:
FlagsDOMHandler() {}
virtual ~FlagsDOMHandler() {}
// WebUIMessageHandler implementation.
virtual void RegisterMessages();
// Callback for the "requestFlagsExperiments" message.
void HandleRequestFlagsExperiments(const ListValue* args);
// Callback for the "enableFlagsExperiment" message.
void HandleEnableFlagsExperimentMessage(const ListValue* args);
// Callback for the "restartBrowser" message. Restores all tabs on restart.
void HandleRestartBrowser(const ListValue* args);
private:
DISALLOW_COPY_AND_ASSIGN(FlagsDOMHandler);
};
void FlagsDOMHandler::RegisterMessages() {
web_ui_->RegisterMessageCallback("requestFlagsExperiments",
NewCallback(this, &FlagsDOMHandler::HandleRequestFlagsExperiments));
web_ui_->RegisterMessageCallback("enableFlagsExperiment",
NewCallback(this, &FlagsDOMHandler::HandleEnableFlagsExperimentMessage));
web_ui_->RegisterMessageCallback("restartBrowser",
NewCallback(this, &FlagsDOMHandler::HandleRestartBrowser));
}
void FlagsDOMHandler::HandleRequestFlagsExperiments(const ListValue* args) {
DictionaryValue results;
results.Set("flagsExperiments",
about_flags::GetFlagsExperimentsData(
g_browser_process->local_state()));
results.SetBoolean("needsRestart",
about_flags::IsRestartNeededToCommitChanges());
web_ui_->CallJavascriptFunction("returnFlagsExperiments", results);
}
void FlagsDOMHandler::HandleEnableFlagsExperimentMessage(
const ListValue* args) {
DCHECK_EQ(2u, args->GetSize());
if (args->GetSize() != 2)
return;
std::string experiment_internal_name;
std::string enable_str;
if (!args->GetString(0, &experiment_internal_name) ||
!args->GetString(1, &enable_str))
return;
about_flags::SetExperimentEnabled(
g_browser_process->local_state(),
experiment_internal_name,
enable_str == "true");
}
void FlagsDOMHandler::HandleRestartBrowser(const ListValue* args) {
#if !defined(OS_CHROMEOS)
// Set the flag to restore state after the restart.
PrefService* pref_service = g_browser_process->local_state();
pref_service->SetBoolean(prefs::kRestartLastSessionOnShutdown, true);
BrowserList::CloseAllBrowsersAndExit();
#else
// For CrOS instead of browser restart (which is not supported) perform a full
// sign out. Session will be only restored is user has that setting set.
// Same session restore behavior happens in case of full restart after update.
BrowserList::GetLastActive()->Exit();
#endif
}
} // namespace
///////////////////////////////////////////////////////////////////////////////
//
// FlagsUI
//
///////////////////////////////////////////////////////////////////////////////
FlagsUI::FlagsUI(TabContents* contents) : WebUI(contents) {
AddMessageHandler((new FlagsDOMHandler())->Attach(this));
FlagsUIHTMLSource* html_source = new FlagsUIHTMLSource();
// Set up the about:flags source.
contents->profile()->GetChromeURLDataManager()->AddDataSource(html_source);
}
// static
RefCountedMemory* FlagsUI::GetFaviconResourceBytes() {
return ResourceBundle::GetSharedInstance().
LoadDataResourceBytes(IDR_FLAGS);
}
// static
void FlagsUI::RegisterPrefs(PrefService* prefs) {
prefs->RegisterListPref(prefs::kEnabledLabsExperiments);
}
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