src/chrome/browser/web_applications/update_shortcut_worker_win.cc

   1 // Copyright 2014 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/web_applications/update_shortcut_worker_win.h"
   6
   7 #include <algorithm>
   8
   9 #include "base/bind.h"
  10 #include "base/bind_helpers.h"
  11 #include "base/file_util.h"
  12 #include "base/path_service.h"
  13 #include "base/strings/utf_string_conversions.h"
  14 #include "base/win/shortcut.h"
  15 #include "base/win/windows_version.h"
  16 #include "chrome/browser/chrome_notification_types.h"
  17 #include "chrome/browser/extensions/tab_helper.h"
  18 #include "chrome/browser/favicon/favicon_tab_helper.h"
  19 #include "chrome/browser/profiles/profile.h"
  20 #include "chrome/browser/web_applications/web_app.h"
  21 #include "chrome/browser/web_applications/web_app_win.h"
  22 #include "components/favicon_base/select_favicon_frames.h"
  23 #include "content/public/browser/browser_thread.h"
  24 #include "content/public/browser/notification_details.h"
  25 #include "content/public/browser/notification_source.h"
  26 #include "content/public/browser/web_contents.h"
  27 #include "ui/gfx/icon_util.h"
  28 #include "url/gurl.h"
  29
  30 using content::BrowserThread;
  31 using content::NavigationController;
  32 using content::WebContents;
  33
  34 namespace web_app {
  35
  36 UpdateShortcutWorker::UpdateShortcutWorker(WebContents* web_contents)
  37     : web_contents_(web_contents),
  38       profile_path_(Profile::FromBrowserContext(
  39           web_contents->GetBrowserContext())->GetPath()) {
  40   extensions::TabHelper* extensions_tab_helper =
  41       extensions::TabHelper::FromWebContents(web_contents);
  42   web_app::GetShortcutInfoForTab(web_contents_, &shortcut_info_);
  43   web_app::GetIconsInfo(extensions_tab_helper->web_app_info(),
  44                         &unprocessed_icons_);
  45   file_name_ = web_app::internals::GetSanitizedFileName(shortcut_info_.title);
  46
  47   registrar_.Add(
  48       this,
  49       chrome::NOTIFICATION_TAB_CLOSING,
  50       content::Source<NavigationController>(&web_contents->GetController()));
  51 }
  52
  53 void UpdateShortcutWorker::Run() {
  54   // Starting by downloading app icon.
  55   DownloadIcon();
  56 }
  57
  58 void UpdateShortcutWorker::Observe(
  59     int type,
  60     const content::NotificationSource& source,
  61     const content::NotificationDetails& details) {
  62   if (type == chrome::NOTIFICATION_TAB_CLOSING &&
  63       content::Source<NavigationController>(source).ptr() ==
  64         &web_contents_->GetController()) {
  65     // Underlying tab is closing.
  66     web_contents_ = NULL;
  67   }
  68 }
  69
  70 void UpdateShortcutWorker::DownloadIcon() {
  71   // FetchIcon must run on UI thread because it relies on WebContents
  72   // to download the icon.
  73   DCHECK_CURRENTLY_ON(BrowserThread::UI);
  74
  75   if (web_contents_ == NULL) {
  76     DeleteMe();  // We are done if underlying WebContents is gone.
  77     return;
  78   }
  79
  80   if (unprocessed_icons_.empty()) {
  81     // No app icon. Just use the favicon from WebContents.
  82     UpdateShortcuts();
  83     return;
  84   }
  85
  86   int preferred_size = std::max(unprocessed_icons_.back().width,
  87                                 unprocessed_icons_.back().height);
  88   web_contents_->DownloadImage(
  89       unprocessed_icons_.back().url,
  90       true,  // favicon
  91       0,  // no maximum size
  92       base::Bind(&UpdateShortcutWorker::DidDownloadFavicon,
  93                  base::Unretained(this),
  94                  preferred_size));
  95   unprocessed_icons_.pop_back();
  96 }
  97
  98 void UpdateShortcutWorker::DidDownloadFavicon(
  99     int requested_size,
 100     int id,
 101     int http_status_code,
 102     const GURL& image_url,
 103     const std::vector<SkBitmap>& bitmaps,
 104     const std::vector<gfx::Size>& original_sizes) {
 105   std::vector<ui::ScaleFactor> scale_factors;
 106   scale_factors.push_back(ui::SCALE_FACTOR_100P);
 107
 108   std::vector<size_t> closest_indices;
 109   SelectFaviconFrameIndices(original_sizes,
 110                             scale_factors,
 111                             requested_size,
 112                             &closest_indices,
 113                             NULL);
 114
 115   SkBitmap bitmap;
 116   if (!bitmaps.empty()) {
 117      size_t closest_index = closest_indices[0];
 118      bitmap = bitmaps[closest_index];
 119   }
 120
 121   if (!bitmap.isNull()) {
 122     // Update icon with download image and update shortcut.
 123     shortcut_info_.favicon.Add(gfx::Image::CreateFrom1xBitmap(bitmap));
 124     extensions::TabHelper* extensions_tab_helper =
 125         extensions::TabHelper::FromWebContents(web_contents_);
 126     extensions_tab_helper->SetAppIcon(bitmap);
 127     UpdateShortcuts();
 128   } else {
 129     // Try the next icon otherwise.
 130     DownloadIcon();
 131   }
 132 }
 133
 134 void UpdateShortcutWorker::CheckExistingShortcuts() {
 135   DCHECK_CURRENTLY_ON(BrowserThread::FILE);
 136
 137   // Locations to check to shortcut_paths.
 138   struct {
 139     int location_id;
 140     const wchar_t* sub_dir;
 141   } locations[] = {
 142     {
 143       base::DIR_USER_DESKTOP,
 144       NULL
 145     }, {
 146       base::DIR_START_MENU,
 147       NULL
 148     }, {
 149       // For Win7, create_in_quick_launch_bar means pinning to taskbar.
 150       base::DIR_APP_DATA,
 151       (base::win::GetVersion() >= base::win::VERSION_WIN7) ?
 152           L"Microsoft\\Internet Explorer\\Quick Launch\\User Pinned\\TaskBar" :
 153           L"Microsoft\\Internet Explorer\\Quick Launch"
 154     }
 155   };
 156
 157   for (int i = 0; i < arraysize(locations); ++i) {
 158     base::FilePath path;
 159     if (!PathService::Get(locations[i].location_id, &path)) {
 160       NOTREACHED();
 161       continue;
 162     }
 163
 164     if (locations[i].sub_dir != NULL)
 165       path = path.Append(locations[i].sub_dir);
 166
 167     base::FilePath shortcut_file = path.Append(file_name_).
 168         ReplaceExtension(FILE_PATH_LITERAL(".lnk"));
 169     if (base::PathExists(shortcut_file)) {
 170       shortcut_files_.push_back(shortcut_file);
 171     }
 172   }
 173 }
 174
 175 void UpdateShortcutWorker::UpdateShortcuts() {
 176   BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
 177       base::Bind(&UpdateShortcutWorker::UpdateShortcutsOnFileThread,
 178                  base::Unretained(this)));
 179 }
 180
 181 void UpdateShortcutWorker::UpdateShortcutsOnFileThread() {
 182   DCHECK_CURRENTLY_ON(BrowserThread::FILE);
 183
 184   base::FilePath web_app_path = web_app::GetWebAppDataDirectory(
 185       profile_path_, shortcut_info_.extension_id, shortcut_info_.url);
 186
 187   // Ensure web_app_path exists. web_app_path could be missing for a legacy
 188   // shortcut created by Gears.
 189   if (!base::PathExists(web_app_path) &&
 190       !base::CreateDirectory(web_app_path)) {
 191     NOTREACHED();
 192     return;
 193   }
 194
 195   base::FilePath icon_file =
 196       web_app::internals::GetIconFilePath(web_app_path, shortcut_info_.title);
 197   web_app::internals::CheckAndSaveIcon(icon_file, shortcut_info_.favicon);
 198
 199   // Update existing shortcuts' description, icon and app id.
 200   CheckExistingShortcuts();
 201   if (!shortcut_files_.empty()) {
 202     // Generates app id from web app url and profile path.
 203     base::string16 app_id = ShellIntegration::GetAppModelIdForProfile(
 204         base::UTF8ToWide(
 205             web_app::GenerateApplicationNameFromURL(shortcut_info_.url)),
 206         profile_path_);
 207
 208     // Sanitize description
 209     if (shortcut_info_.description.length() >= MAX_PATH)
 210       shortcut_info_.description.resize(MAX_PATH - 1);
 211
 212     for (size_t i = 0; i < shortcut_files_.size(); ++i) {
 213       base::win::ShortcutProperties shortcut_properties;
 214       shortcut_properties.set_target(shortcut_files_[i]);
 215       shortcut_properties.set_description(shortcut_info_.description);
 216       shortcut_properties.set_icon(icon_file, 0);
 217       shortcut_properties.set_app_id(app_id);
 218       base::win::CreateOrUpdateShortcutLink(
 219           shortcut_files_[i], shortcut_properties,
 220           base::win::SHORTCUT_UPDATE_EXISTING);
 221     }
 222   }
 223
 224   OnShortcutsUpdated(true);
 225 }
 226
 227 void UpdateShortcutWorker::OnShortcutsUpdated(bool) {
 228   DeleteMe();  // We are done.
 229 }
 230
 231 void UpdateShortcutWorker::DeleteMe() {
 232   if (BrowserThread::CurrentlyOn(BrowserThread::UI)) {
 233     DeleteMeOnUIThread();
 234   } else {
 235     BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
 236       base::Bind(&UpdateShortcutWorker::DeleteMeOnUIThread,
 237                  base::Unretained(this)));
 238   }
 239 }
 240
 241 void UpdateShortcutWorker::DeleteMeOnUIThread() {
 242   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 243   delete this;
 244 }
 245
 246 }  // namespace web_app