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// 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/components_ui.h"
#include <algorithm>
#include <string>
#include <vector>
#include "base/values.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/component_updater/component_updater_service.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_window.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/common/url_constants.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 "grit/browser_resources.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"
#if defined(OS_CHROMEOS)
#include "chrome/browser/ui/webui/chromeos/ui_account_tweaks.h"
#endif
using content::WebUIMessageHandler;
namespace {
content::WebUIDataSource* CreateComponentsUIHTMLSource() {
content::WebUIDataSource* source =
content::WebUIDataSource::Create(chrome::kChromeUIComponentsHost);
source->SetUseJsonJSFormatV2();
source->AddLocalizedString("componentsTitle", IDS_COMPONENTS_TITLE);
source->AddLocalizedString("componentsNoneInstalled",
IDS_COMPONENTS_NONE_INSTALLED);
source->AddLocalizedString("componentVersion", IDS_COMPONENTS_VERSION);
source->AddLocalizedString("checkUpdate", IDS_COMPONENTS_CHECK_FOR_UPDATE);
source->AddLocalizedString("noComponents", IDS_COMPONENTS_NO_COMPONENTS);
source->SetJsonPath("strings.js");
source->AddResourcePath("components.js", IDR_COMPONENTS_JS);
source->SetDefaultResource(IDR_COMPONENTS_HTML);
#if defined(OS_CHROMEOS)
chromeos::AddAccountUITweaksLocalizedValues(source);
#endif
return source;
}
////////////////////////////////////////////////////////////////////////////////
//
// ComponentsDOMHandler
//
////////////////////////////////////////////////////////////////////////////////
// The handler for Javascript messages for the chrome://components/ page.
class ComponentsDOMHandler : public WebUIMessageHandler {
public:
ComponentsDOMHandler();
virtual ~ComponentsDOMHandler() {}
// WebUIMessageHandler implementation.
virtual void RegisterMessages() OVERRIDE;
// Callback for the "requestComponentsData" message.
void HandleRequestComponentsData(const base::ListValue* args);
// Callback for the "checkUpdate" message.
void HandleCheckUpdate(const base::ListValue* args);
private:
void LoadComponents();
content::NotificationRegistrar registrar_;
DISALLOW_COPY_AND_ASSIGN(ComponentsDOMHandler);
};
ComponentsDOMHandler::ComponentsDOMHandler() {
}
void ComponentsDOMHandler::RegisterMessages() {
web_ui()->RegisterMessageCallback("requestComponentsData",
base::Bind(&ComponentsDOMHandler::HandleRequestComponentsData,
base::Unretained(this)));
web_ui()->RegisterMessageCallback("checkUpdate",
base::Bind(&ComponentsDOMHandler::HandleCheckUpdate,
base::Unretained(this)));
}
void ComponentsDOMHandler::HandleRequestComponentsData(
const base::ListValue* args) {
LoadComponents();
}
// This function is called when user presses button from html UI.
// TODO(shrikant): We need to make this button available based on current
// state e.g. If component state is currently updating then we need to disable
// button. (https://code.google.com/p/chromium/issues/detail?id=272540)
void ComponentsDOMHandler::HandleCheckUpdate(const base::ListValue* args) {
if (args->GetSize() != 1) {
NOTREACHED();
return;
}
std::string component_id;
if (!args->GetString(0, &component_id)) {
NOTREACHED();
return;
}
ComponentsUI::OnDemandUpdate(component_id);
}
void ComponentsDOMHandler::LoadComponents() {
component_updater::ComponentUpdateService* cus =
g_browser_process->component_updater();
std::vector<component_updater::CrxComponentInfo> components;
cus->GetComponents(&components);
// Construct DictionaryValues to return to UI.
base::ListValue* component_list = new base::ListValue();
for (size_t j = 0; j < components.size(); ++j) {
const component_updater::CrxComponentInfo& component = components[j];
base::DictionaryValue* component_entry = new base::DictionaryValue();
component_entry->SetString("id", component.id);
component_entry->SetString("name", component.name);
component_entry->SetString("version", component.version);
component_list->Append(component_entry);
}
base::DictionaryValue results;
results.Set("components", component_list);
web_ui()->CallJavascriptFunction("returnComponentsData", results);
}
} // namespace
///////////////////////////////////////////////////////////////////////////////
//
// ComponentsUI
//
///////////////////////////////////////////////////////////////////////////////
ComponentsUI::ComponentsUI(content::WebUI* web_ui) : WebUIController(web_ui) {
web_ui->AddMessageHandler(new ComponentsDOMHandler());
// Set up the chrome://components/ source.
Profile* profile = Profile::FromWebUI(web_ui);
content::WebUIDataSource::Add(profile, CreateComponentsUIHTMLSource());
}
// static
void ComponentsUI::OnDemandUpdate(const std::string& component_id) {
component_updater::ComponentUpdateService* cus =
g_browser_process->component_updater();
cus->OnDemandUpdate(component_id);
}
// static
base::RefCountedMemory* ComponentsUI::GetFaviconResourceBytes(
ui::ScaleFactor scale_factor) {
return ResourceBundle::GetSharedInstance().
LoadDataResourceBytesForScale(IDR_PLUGINS_FAVICON, scale_factor);
}
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