| // Copyright 2013 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/chromeos/slow_ui.h" |
| |
| #include <memory> |
| #include <string> |
| |
| #include "base/bind.h" |
| #include "base/macros.h" |
| #include "base/values.h" |
| #include "chrome/browser/profiles/profile.h" |
| #include "chrome/common/pref_names.h" |
| #include "chrome/common/url_constants.h" |
| #include "chrome/grit/browser_resources.h" |
| #include "chrome/grit/generated_resources.h" |
| #include "components/prefs/pref_change_registrar.h" |
| #include "components/prefs/pref_service.h" |
| #include "content/public/browser/web_contents.h" |
| #include "content/public/browser/web_ui.h" |
| #include "content/public/browser/web_ui_data_source.h" |
| #include "content/public/browser/web_ui_message_handler.h" |
| #include "ui/base/webui/jstemplate_builder.h" |
| #include "ui/base/webui/web_ui_util.h" |
| |
| using content::WebUIMessageHandler; |
| |
| namespace { |
| |
| // JS API callbacks names. |
| const char kJsApiDisableTracing[] = "disableTracing"; |
| const char kJsApiEnableTracing[] = "enableTracing"; |
| const char kJsApiLoadComplete[] = "loadComplete"; |
| |
| // Page JS API function names. |
| const char kJsApiTracingPrefChanged[] = "options.Slow.tracingPrefChanged"; |
| |
| } // namespace |
| |
| namespace chromeos { |
| |
| content::WebUIDataSource* CreateSlowUIHTMLSource() { |
| content::WebUIDataSource* source = |
| content::WebUIDataSource::Create(chrome::kChromeUISlowHost); |
| |
| source->AddLocalizedString("slowDisable", IDS_SLOW_DISABLE); |
| source->AddLocalizedString("slowEnable", IDS_SLOW_ENABLE); |
| source->AddLocalizedString("slowDescription", IDS_SLOW_DESCRIPTION); |
| source->AddLocalizedString("slowWarning", IDS_SLOW_WARNING); |
| |
| source->SetJsonPath("strings.js"); |
| source->AddResourcePath("slow.js", IDR_SLOW_JS); |
| source->SetDefaultResource(IDR_SLOW_HTML); |
| return source; |
| } |
| |
| // The handler for Javascript messages related to the "slow" view. |
| class SlowHandler : public WebUIMessageHandler { |
| public: |
| explicit SlowHandler(Profile* profile); |
| ~SlowHandler() override; |
| |
| // WebUIMessageHandler implementation. |
| void RegisterMessages() override; |
| |
| private: |
| void UpdatePage(); |
| |
| // Handlers for JS WebUI messages. |
| void HandleDisable(const base::ListValue* args); |
| void HandleEnable(const base::ListValue* args); |
| void LoadComplete(const base::ListValue* args); |
| |
| Profile* profile_; |
| std::unique_ptr<PrefChangeRegistrar> user_pref_registrar_; |
| |
| DISALLOW_COPY_AND_ASSIGN(SlowHandler); |
| }; |
| |
| // SlowHandler ------------------------------------------------------------ |
| |
| SlowHandler::SlowHandler(Profile* profile) : profile_(profile) { |
| } |
| |
| SlowHandler::~SlowHandler() { |
| } |
| |
| void SlowHandler::RegisterMessages() { |
| web_ui()->RegisterMessageCallback( |
| kJsApiDisableTracing, |
| base::BindRepeating(&SlowHandler::HandleDisable, base::Unretained(this))); |
| web_ui()->RegisterMessageCallback( |
| kJsApiEnableTracing, |
| base::BindRepeating(&SlowHandler::HandleEnable, base::Unretained(this))); |
| web_ui()->RegisterMessageCallback( |
| kJsApiLoadComplete, |
| base::BindRepeating(&SlowHandler::LoadComplete, base::Unretained(this))); |
| |
| user_pref_registrar_.reset(new PrefChangeRegistrar); |
| user_pref_registrar_->Init(profile_->GetPrefs()); |
| user_pref_registrar_->Add(prefs::kPerformanceTracingEnabled, |
| base::Bind(&SlowHandler::UpdatePage, |
| base::Unretained(this))); |
| } |
| |
| void SlowHandler::HandleDisable(const base::ListValue* args) { |
| PrefService* pref_service = profile_->GetPrefs(); |
| pref_service->SetBoolean(prefs::kPerformanceTracingEnabled, false); |
| } |
| |
| void SlowHandler::HandleEnable(const base::ListValue* args) { |
| PrefService* pref_service = profile_->GetPrefs(); |
| pref_service->SetBoolean(prefs::kPerformanceTracingEnabled, true); |
| } |
| |
| void SlowHandler::LoadComplete(const base::ListValue* args) { |
| UpdatePage(); |
| } |
| |
| void SlowHandler::UpdatePage() { |
| PrefService* pref_service = profile_->GetPrefs(); |
| bool enabled = pref_service->GetBoolean(prefs::kPerformanceTracingEnabled); |
| base::Value pref_value(enabled); |
| web_ui()->CallJavascriptFunctionUnsafe(kJsApiTracingPrefChanged, pref_value); |
| } |
| |
| // SlowUI ----------------------------------------------------------------- |
| |
| SlowUI::SlowUI(content::WebUI* web_ui) : WebUIController(web_ui) { |
| Profile* profile = Profile::FromWebUI(web_ui); |
| |
| web_ui->AddMessageHandler(std::make_unique<SlowHandler>(profile)); |
| |
| // Set up the chrome://slow/ source. |
| content::WebUIDataSource::Add(profile, CreateSlowUIHTMLSource()); |
| } |
| |
| } // namespace chromeos |
| |