start_page_ui.cc revision f2477e01787aa58f445919b809d89e252beef54f 
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/file_util.h"
8#include "base/files/file_path.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/profiles/profile.h"
13#include "chrome/browser/ui/webui/app_list/start_page_handler.h"
14#include "chrome/common/url_constants.h"
15#include "content/public/browser/browser_thread.h"
16#include "content/public/browser/web_ui.h"
17#include "content/public/browser/web_ui_data_source.h"
18#include "grit/browser_resources.h"
19
20namespace app_list {
21namespace {
22#if defined(OS_CHROMEOS)
23const char* kHotwordFilenames[] = {
24  "dnn",
25  "ep_acoustic_model",
26  "hclg_shotword",
27  "hotword_arm.nexe",
28  "hotword_classifier",
29  "hotword_normalizer",
30  "hotword_word_symbols",
31  "hotword_x86_32.nexe",
32  "hotword_x86_64.nexe",
33  "okgoogle_hotword.config",
34  "phonelist",
35  "phone_state_map",
36};
37
38const char kHotwordFilesDir[] = "/opt/google/hotword";
39
40void LoadModelData(const std::string& path,
41                   const content::WebUIDataSource::GotDataCallback& callback) {
42  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::FILE));
43  // Will be owned by |callback|.
44  scoped_refptr<base::RefCountedString> data(new base::RefCountedString());
45  base::FilePath base_dir(kHotwordFilesDir);
46  base::ReadFileToString(base_dir.AppendASCII(path), &(data->data()));
47  callback.Run(data.get());
48}
49
50bool HandleHotwordFilesResourceFilter(
51    const std::string& path,
52    const content::WebUIDataSource::GotDataCallback& callback) {
53  for (size_t i = 0; i < arraysize(kHotwordFilenames); ++i) {
54    if (path == kHotwordFilenames[i]) {
55      content::BrowserThread::PostTask(
56          content::BrowserThread::FILE,
57          FROM_HERE,
58          base::Bind(&LoadModelData, 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->SetDefaultResource(IDR_APP_LIST_START_PAGE_HTML);
86
87#if defined(OS_CHROMEOS)
88  source->OverrideContentSecurityPolicyObjectSrc("object-src 'self' data:;");
89  if (base::SysInfo::IsRunningOnChromeOS())
90    source->SetRequestFilter(base::Bind(&HandleHotwordFilesResourceFilter));
91#endif
92
93  content::WebUIDataSource::Add(Profile::FromWebUI(web_ui()), source.release());
94}
95
96}  // namespace app_list
97