1// Copyright 2013 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#include "chrome/browser/ui/webui/app_list/start_page_ui.h" 6 7#include "base/files/file_path.h" 8#include "base/files/file_util.h" 9#include "base/memory/ref_counted_memory.h" 10#include "base/memory/scoped_ptr.h" 11#include "base/sys_info.h" 12#include "chrome/browser/extensions/extension_service.h" 13#include "chrome/browser/profiles/profile.h" 14#include "chrome/browser/ui/webui/app_list/start_page_handler.h" 15#include "chrome/common/extensions/extension_constants.h" 16#include "chrome/common/url_constants.h" 17#include "content/public/browser/browser_thread.h" 18#include "content/public/browser/web_ui.h" 19#include "content/public/browser/web_ui_data_source.h" 20#include "extensions/browser/extension_system.h" 21#include "extensions/common/extension.h" 22#include "grit/browser_resources.h" 23 24namespace app_list { 25namespace { 26#if defined(OS_CHROMEOS) 27const char* kHotwordFilePrefixes[] = { 28 "hotword_", 29 "_platform_specific/", 30}; 31 32void LoadModelData(const base::FilePath& base_dir, 33 const std::string& path, 34 const content::WebUIDataSource::GotDataCallback& callback) { 35 DCHECK_CURRENTLY_ON(content::BrowserThread::FILE); 36 // Will be owned by |callback|. 37 scoped_refptr<base::RefCountedString> data(new base::RefCountedString()); 38 base::ReadFileToString(base_dir.AppendASCII(path), &(data->data())); 39 callback.Run(data.get()); 40} 41 42bool HandleHotwordFilesResourceFilter( 43 Profile* profile, 44 const std::string& path, 45 const content::WebUIDataSource::GotDataCallback& callback) { 46 ExtensionService* service = 47 extensions::ExtensionSystem::Get(profile)->extension_service(); 48 const extensions::Extension* extension = 49 service->GetExtensionById(extension_misc::kHotwordExtensionId, false); 50 if (!extension) 51 return false; 52 53 for (size_t i = 0; i < arraysize(kHotwordFilePrefixes); ++i) { 54 if (path.find(kHotwordFilePrefixes[i]) == 0) { 55 content::BrowserThread::PostTask( 56 content::BrowserThread::FILE, 57 FROM_HERE, 58 base::Bind(&LoadModelData, extension->path(), path, callback)); 59 return true; 60 } 61 } 62 63 return false; 64} 65#endif // OS_CHROMEOS 66} // namespace 67 68StartPageUI::StartPageUI(content::WebUI* web_ui) 69 : content::WebUIController(web_ui) { 70 web_ui->AddMessageHandler(new StartPageHandler); 71 InitDataSource(); 72} 73 74StartPageUI::~StartPageUI() {} 75 76void StartPageUI::InitDataSource() { 77 scoped_ptr<content::WebUIDataSource> source( 78 content::WebUIDataSource::Create(chrome::kChromeUIAppListStartPageHost)); 79 80 source->SetUseJsonJSFormatV2(); 81 source->SetJsonPath("strings.js"); 82 83 source->AddResourcePath("start_page.css", IDR_APP_LIST_START_PAGE_CSS); 84 source->AddResourcePath("start_page.js", IDR_APP_LIST_START_PAGE_JS); 85 source->AddResourcePath("hotword_nacl.nmf", IDR_APP_LIST_HOTWORD_NACL_NMF); 86 source->SetDefaultResource(IDR_APP_LIST_START_PAGE_HTML); 87 88#if defined(OS_CHROMEOS) 89 source->OverrideContentSecurityPolicyObjectSrc("object-src 'self' data:;"); 90 if (base::SysInfo::IsRunningOnChromeOS()) 91 source->SetRequestFilter(base::Bind(&HandleHotwordFilesResourceFilter, 92 Profile::FromWebUI(web_ui()))); 93#endif 94 95 content::WebUIDataSource::Add(Profile::FromWebUI(web_ui()), source.release()); 96} 97 98} // namespace app_list 99