If customization includes default wallpaper, download and apply it.

chrome/browser/chromeos/login/wallpaper_manager.cc

Index: chrome/browser/chromeos/login/wallpaper_manager.cc
diff --git a/chrome/browser/chromeos/login/wallpaper_manager.cc b/chrome/browser/chromeos/login/wallpaper_manager.cc
index a036ca9064fdbf43a1a63d07eba4e94046c9fc0f..09a240b6d78914767ce2e50457f10f292e764cb5 100644
--- a/chrome/browser/chromeos/login/wallpaper_manager.cc
+++ b/chrome/browser/chromeos/login/wallpaper_manager.cc
@@ -7,6 +7,8 @@
 #include <numeric>
 #include <vector>
 
+#include "ash/ash_switches.h"
+#include "ash/desktop_background/desktop_background_controller.h"
 #include "ash/shell.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ -112,6 +114,21 @@ bool MoveCustomWallpaperDirectory(const char* sub_dir,
   return false;
 }
 
+void CheckCustomizedWallpaperFilesExist(
+    const base::FilePath& downloaded_file,
+    const chromeos::WallpaperManager::CustomizedWallpaperRescaledFiles*
+        rescaled_files,
+    chromeos::WallpaperManager::CustomizedWallpaperFilesExist* exist) {
+  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::FILE));
+  DCHECK(rescaled_files);
+  DCHECK(exist);
+  exist->dowloaded = base::PathExists(downloaded_file);
+  exist->rescaled_original =
+      base::PathExists(rescaled_files->path_rescaled_original);
+  exist->rescaled_small = base::PathExists(rescaled_files->path_rescaled_small);
+  exist->rescaled_large = base::PathExists(rescaled_files->path_rescaled_large);
+}
+
 }  // namespace
 
 namespace chromeos {
@@ -121,6 +138,9 @@ const char kWallpaperSequenceTokenName[] = "wallpaper-sequence";
 const char kSmallWallpaperSuffix[] = "_small";
 const char kLargeWallpaperSuffix[] = "_large";
 
+// This is used for customized default wallpaper only.
+const char kOriginalWallpaperSuffix[] = "_original";
+
 const char kSmallWallpaperSubDir[] = "small";
 const char kLargeWallpaperSubDir[] = "large";
 const char kOriginalWallpaperSubDir[] = "original";
@@ -266,6 +286,27 @@ void WallpaperManager::PendingWallpaper::OnWallpaperSet() {
 
 // WallpaperManager, public: ---------------------------------------------------
 
+WallpaperManager::CustomizedWallpaperRescaledFiles::
+    CustomizedWallpaperRescaledFiles(
+        const base::FilePath& path_rescaled_original,
+        const base::FilePath& path_rescaled_small,
+        const base::FilePath& path_rescaled_large)
+    : path_rescaled_original(path_rescaled_original),
+      path_rescaled_small(path_rescaled_small),
+      path_rescaled_large(path_rescaled_large) {
+}
+
+WallpaperManager::CustomizedWallpaperFilesExist::CustomizedWallpaperFilesExist()
+    : dowloaded(false),
+      rescaled_original(false),
+      rescaled_small(false),
+      rescaled_large(false) {
+}
+
+bool WallpaperManager::CustomizedWallpaperFilesExist::AllRescaledExist() const {
+  return rescaled_original && rescaled_small && rescaled_large;
+}
+
 // TestApi. For testing purpose
 WallpaperManager::TestApi::TestApi(WallpaperManager* wallpaper_manager)
     : wallpaper_manager_(wallpaper_manager) {
@@ -306,6 +347,8 @@ WallpaperManager::WallpaperManager()
       should_cache_wallpaper_(false),
       weak_factory_(this),
       pending_inactive_(NULL) {
+  SetDefaultWallpaperPathFromCommandLine(
+      base::CommandLine::ForCurrentProcess());
   registrar_.Add(this,
                  chrome::NOTIFICATION_LOGIN_USER_CHANGED,
                  content::NotificationService::AllSources());
@@ -432,6 +475,13 @@ void WallpaperManager::InitializeWallpaper() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   UserManager* user_manager = UserManager::Get();
 
+  // Apply device customization.
+  if (ShouldUseCustomizedDefaultWallpaper()) {
+    SetDefaultWallpaperPath(
+        GetCustomizedWallpaperDefaultRescaledFileName(kSmallWallpaperSuffix),
+        GetCustomizedWallpaperDefaultRescaledFileName(kLargeWallpaperSuffix));
+  }
+
   CommandLine* command_line = GetComandLine();
   if (command_line->HasSwitch(chromeos::switches::kGuestSession)) {
     // Guest wallpaper should be initialized when guest login.
@@ -570,7 +620,7 @@ bool WallpaperManager::ResizeWallpaper(
   return true;
 }
 
-void WallpaperManager::ResizeAndSaveWallpaper(const UserImage& wallpaper,
+bool WallpaperManager::ResizeAndSaveWallpaper(const UserImage& wallpaper,
                                               const base::FilePath& path,
                                               ash::WallpaperLayout layout,
                                               int preferred_width,
@@ -579,15 +629,15 @@ void WallpaperManager::ResizeAndSaveWallpaper(const UserImage& wallpaper,
     // TODO(bshe): Generates cropped custom wallpaper for CENTER layout.
     if (base::PathExists(path))
       base::DeleteFile(path, false);
-    return;
+    return false;
   }
   scoped_refptr<base::RefCountedBytes> data;
   if (ResizeWallpaper(wallpaper, layout, preferred_width, preferred_height,
                       &data)) {
-    SaveWallpaperInternal(path,
-                          reinterpret_cast<const char*>(data->front()),
-                          data->size());
+    return SaveWallpaperInternal(
+        path, reinterpret_cast<const char*>(data->front()), data->size());
   }
+  return false;
 }
 
 bool WallpaperManager::IsPolicyControlled(const std::string& user_id) const {
@@ -742,9 +792,22 @@ void WallpaperManager::DoSetDefaultWallpaper(
   // up the tests.
   if (!ash::Shell::HasInstance())
     return;
-  if (ash::Shell::GetInstance()->desktop_background_controller()->
-          SetDefaultWallpaper(UserManager::Get()->IsLoggedInAsGuest()))
-    loaded_wallpapers_++;
+
+  const bool is_guest = UserManager::Get()->IsLoggedInAsGuest();
+
+  if (is_guest) {
+    loaded_wallpapers_ +=
+        ash::Shell::GetInstance()
+            ->desktop_background_controller()
+            ->SetDefaultWallpaper(guest_default_small_wallpaper_file_,
+                                  guest_default_large_wallpaper_file_);
+  } else {
+    loaded_wallpapers_ +=
+        ash::Shell::GetInstance()
+            ->desktop_background_controller()
+            ->SetDefaultWallpaper(default_small_wallpaper_file_,
+                                  default_large_wallpaper_file_);
+  }
 }
 
 void WallpaperManager::InitInitialUserWallpaper(const std::string& user_id,
@@ -1070,6 +1133,12 @@ void WallpaperManager::EnsureCustomWallpaperDirectories(
     base::CreateDirectory(dir);
 }
 
+void WallpaperManager::set_command_line_for_testing(
+    base::CommandLine* command_line) {
+  command_line_for_testing_ = command_line;
+  SetDefaultWallpaperPathFromCommandLine(command_line);
+}
+
 CommandLine* WallpaperManager::GetComandLine() {
   CommandLine* command_line = command_line_for_testing_ ?
       command_line_for_testing_ : CommandLine::ForCurrentProcess();
@@ -1378,11 +1447,11 @@ void WallpaperManager::RecordUma(User::WallpaperType type, int index) const {
                             User::WALLPAPER_TYPE_COUNT);
 }
 
-void WallpaperManager::SaveWallpaperInternal(const base::FilePath& path,
+bool WallpaperManager::SaveWallpaperInternal(const base::FilePath& path,
                                              const char* data,
                                              int size) const {
   int written_bytes = base::WriteFile(path, data, size);
-  DCHECK(written_bytes == size);
+  return written_bytes == size;
 }
 
 void WallpaperManager::StartLoad(const std::string& user_id,
@@ -1455,4 +1524,218 @@ WallpaperManager::PendingWallpaper* WallpaperManager::GetPendingWallpaper(
   return pending_inactive_;
 }
 
+// static
+base::FilePath WallpaperManager::GetCustomizedWallpaperDefaultRescaledFileName(
+    const char* suffix) {
+  const base::FilePath default_downloaded_file_name =
+      ServicesCustomizationDocument::GetCustomizedWallpaperDownloadedFileName();
+  const base::FilePath default_cache_dir =
+      ServicesCustomizationDocument::GetCustomizedWallpaperCacheDir();
+  if (default_downloaded_file_name.empty() || default_cache_dir.empty())
+    return base::FilePath();
+  return default_cache_dir.Append(
+      default_downloaded_file_name.BaseName().value() + suffix);
+}
+
+void WallpaperManager::SetCustomizedDefaultWallpaper(
+    const GURL& wallpaper_url,
+    const base::FilePath& downloaded_file,
+    const base::FilePath& resized_directory) {
+  // Should fail if this ever happens in tests.
+  DCHECK(wallpaper_url.is_valid() || wallpaper_url.is_empty());
+  if (!wallpaper_url.is_valid()) {
+    if (!wallpaper_url.is_empty()) {
+      LOG(WARNING) << "Invalid Customized Wallpaper URL.";
+    }
+    return;
+  }
+  std::string downloaded_file_name = downloaded_file.BaseName().value();
+  scoped_ptr<CustomizedWallpaperRescaledFiles> rescaled_files(
+      new CustomizedWallpaperRescaledFiles(
+          resized_directory.Append(downloaded_file_name +
+                                   kOriginalWallpaperSuffix),
+          resized_directory.Append(downloaded_file_name +
+                                   kSmallWallpaperSuffix),
+          resized_directory.Append(downloaded_file_name +
+                                   kLargeWallpaperSuffix)));
+  scoped_ptr<CustomizedWallpaperFilesExist> exist(
+      new CustomizedWallpaperFilesExist);
+
+  base::Closure check_file_exists =
+      base::Bind(&CheckCustomizedWallpaperFilesExist,
+                 downloaded_file,
+                 base::Unretained(rescaled_files.get()),
+                 base::Unretained(exist.get()));
+  base::Closure on_checked_closure =
+      base::Bind(&WallpaperManager::SetCustomizedDefaultWallpaperAfterCheck,
+                 weak_factory_.GetWeakPtr(),
+                 wallpaper_url,
+                 downloaded_file,
+                 base::Passed(rescaled_files.Pass()),
+                 base::Passed(exist.Pass()));
+  if (!content::BrowserThread::PostBlockingPoolTaskAndReply(
+          FROM_HERE, check_file_exists, on_checked_closure)) {
+    LOG(WARNING) << "Failed to start check CheckCustomizedWallpaperFilesExist.";
+  }
+}
+
+void WallpaperManager::ResizeCustomizedDefaultWallpaper(
+    scoped_ptr<gfx::ImageSkia> image,
+    const UserImage::RawImage& raw_image,
+    const CustomizedWallpaperRescaledFiles* rescaled_files,
+    bool* success) {
+  DCHECK(BrowserThread::GetBlockingPool()->IsRunningSequenceOnCurrentThread(
+      sequence_token_));
+  UserImage wallpaper(*image.get(), raw_image);
+
+  *success = false;
+
+  // Re-encode orginal file to jpeg format and saves the result in case that
+  // resized wallpaper is not generated (i.e. chrome shutdown before resized
+  // wallpaper is saved).
+  *success |= ResizeAndSaveWallpaper(wallpaper,
+                                     rescaled_files->path_rescaled_original,
+                                     ash::WALLPAPER_LAYOUT_STRETCH,
+                                     wallpaper.image().width(),
+                                     wallpaper.image().height());
+
+  *success |= ResizeAndSaveWallpaper(wallpaper,
+                                     rescaled_files->path_rescaled_small,
+                                     ash::WALLPAPER_LAYOUT_STRETCH,
+                                     ash::kSmallWallpaperMaxWidth,
+                                     ash::kSmallWallpaperMaxHeight);
+
+  *success |= ResizeAndSaveWallpaper(wallpaper,
+                                     rescaled_files->path_rescaled_large,
+                                     ash::WALLPAPER_LAYOUT_STRETCH,
+                                     ash::kLargeWallpaperMaxWidth,
+                                     ash::kLargeWallpaperMaxHeight);
+}
+
+void WallpaperManager::OnCustomizedDefaultWallpaperResized(
+    const GURL& wallpaper_url,
+    scoped_ptr<CustomizedWallpaperRescaledFiles> rescaled_files,
+    scoped_ptr<bool> success) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK(rescaled_files.get());
+  DCHECK(success.get());
+  if (!*success) {
+    LOG(WARNING) << "Failed to save Resized Customized Default Wallpaper";
+    return;
+  }
+  PrefService* prefService = g_browser_process->local_state();
+  prefService->SetString(prefs::kCustomizationDefaultWallpaperURL,
+                         wallpaper_url.spec());
+  SetDefaultWallpaperPath(rescaled_files->path_rescaled_small,
+                          rescaled_files->path_rescaled_large);
+  VLOG(1) << "Customized Default Wallpaper applied.";
+}
+
+void WallpaperManager::OnCustomizedDefaultWallpaperDecoded(
+    const GURL& wallpaper_url,
+    scoped_ptr<CustomizedWallpaperRescaledFiles> rescaled_files,
+    const UserImage& wallpaper) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+
+  // If decoded wallpaper is empty, we have probably failed to decode the file.
+  if (wallpaper.image().isNull()) {
+    LOG(WARNING) << "Failed to decode customized wallpaper.";
+    return;
+  }
+
+  wallpaper.image().EnsureRepsForSupportedScales();
+  scoped_ptr<gfx::ImageSkia> deep_copy(wallpaper.image().DeepCopy());
+
+  scoped_ptr<bool> success(new bool(false));
+
+  // TODO(bshe): This may break if RawImage becomes RefCountedMemory.
+  base::Closure resize_closure =
+      base::Bind(&WallpaperManager::ResizeCustomizedDefaultWallpaper,
+                 base::Unretained(this),
+                 base::Passed(&deep_copy),
+                 wallpaper.raw_image(),
+                 base::Unretained(rescaled_files.get()),
+                 base::Unretained(success.get()));
+  base::Closure on_resized_closure =
+      base::Bind(&WallpaperManager::OnCustomizedDefaultWallpaperResized,
+                 weak_factory_.GetWeakPtr(),
+                 wallpaper_url,
+                 base::Passed(rescaled_files.Pass()),
+                 base::Passed(success.Pass()));
+
+  // Block shutdown on this task. Otherwise, we may lose the custom wallpaper
+  // that the user selected.
+  scoped_refptr<base::SequencedTaskRunner> blocking_task_runner =
+      BrowserThread::GetBlockingPool()
+          ->GetSequencedTaskRunnerWithShutdownBehavior(
+              sequence_token_, base::SequencedWorkerPool::BLOCK_SHUTDOWN);
+
+  if (!blocking_task_runner->PostTaskAndReply(
+          FROM_HERE, resize_closure, on_resized_closure)) {
+    LOG(WARNING) << "Failed to start Customized Wallpaper resize.";
+  }
+}
+
+void WallpaperManager::SetCustomizedDefaultWallpaperAfterCheck(
+    const GURL& wallpaper_url,
+    const base::FilePath& downloaded_file,
+    scoped_ptr<CustomizedWallpaperRescaledFiles> rescaled_files,
+    scoped_ptr<CustomizedWallpaperFilesExist> exist) {
+  PrefService* prefService = g_browser_process->local_state();
+
+  std::string current_url =
+      prefService->GetString(prefs::kCustomizationDefaultWallpaperURL);
+  if ((current_url != wallpaper_url.spec()) || (!exist->AllRescaledExist())) {
+    DCHECK(exist->dowloaded);
+    // Need rescale
+    wallpaper_loader_->Start(
+        downloaded_file.value(),
+        0,  // Do not crop.
+        base::Bind(&WallpaperManager::OnCustomizedDefaultWallpaperDecoded,
+                   weak_factory_.GetWeakPtr(),
+                   wallpaper_url,
+                   base::Passed(rescaled_files.Pass())));
+  } else {
+    SetDefaultWallpaperPath(rescaled_files->path_rescaled_small,
+                            rescaled_files->path_rescaled_large);
+  }
+}
+
+// static
+bool WallpaperManager::ShouldUseCustomizedDefaultWallpaper() {
+  PrefService* prefService = g_browser_process->local_state();
+
+  return !(prefService->FindPreference(prefs::kCustomizationDefaultWallpaperURL)
+               ->IsDefaultValue());
+}
+
+void WallpaperManager::SetDefaultWallpaperPathFromCommandLine(
+    base::CommandLine* command_line) {
+  default_small_wallpaper_file_ = command_line->GetSwitchValuePath(
+      ash::switches::kAshDefaultWallpaperSmall);
+  default_large_wallpaper_file_ = command_line->GetSwitchValuePath(
+      ash::switches::kAshDefaultWallpaperLarge);
+  guest_default_small_wallpaper_file_ =
+      command_line->GetSwitchValuePath(ash::switches::kAshGuestWallpaperSmall);
+  guest_default_large_wallpaper_file_ =
+      command_line->GetSwitchValuePath(ash::switches::kAshGuestWallpaperLarge);
+}
+
+void WallpaperManager::SetDefaultWallpaperPath(
+    const base::FilePath& default_small_wallpaper_file,
+    const base::FilePath& default_large_wallpaper_file) {
+  ash::DesktopBackgroundController* dbc =
+      ash::Shell::GetInstance()->desktop_background_controller();
+  const bool need_reset = dbc->DefaultWallpaperFileIsAlreadyLoadingOrLoaded(
+                              default_small_wallpaper_file_) ||
+                          dbc->DefaultWallpaperFileIsAlreadyLoadingOrLoaded(
+                              default_large_wallpaper_file_);
+  default_small_wallpaper_file_ = default_small_wallpaper_file;
+  default_large_wallpaper_file_ = default_large_wallpaper_file;
+  if (need_reset) {
+    dbc->SetDefaultWallpaper(default_small_wallpaper_file,
+                             default_large_wallpaper_file);
+  }
+}
+
 }  // namespace chromeos