Make a controller interface for media galleries dialogs.

chrome/browser/media_galleries/media_galleries_dialog_controller.cc

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright 2014 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/media_galleries/media_galleries_dialog_controller.h"
 
-#include "base/base_paths.h"
-#include "base/path_service.h"
-#include "base/stl_util.h"
-#include "base/strings/utf_string_conversions.h"
-#include "chrome/browser/browser_process.h"
-#include "chrome/browser/extensions/api/file_system/file_system_api.h"
-#include "chrome/browser/media_galleries/media_file_system_registry.h"
-#include "chrome/browser/media_galleries/media_galleries_histograms.h"
-#include "chrome/browser/media_galleries/media_gallery_context_menu.h"
-#include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/ui/chrome_select_file_policy.h"
-#include "components/storage_monitor/storage_info.h"
-#include "components/storage_monitor/storage_monitor.h"
-#include "content/public/browser/web_contents.h"
-#include "extensions/browser/extension_prefs.h"
-#include "extensions/common/extension.h"
-#include "extensions/common/permissions/media_galleries_permission.h"
-#include "extensions/common/permissions/permissions_data.h"
-#include "grit/generated_resources.h"
-#include "ui/base/l10n/l10n_util.h"
-#include "ui/base/models/simple_menu_model.h"
-#include "ui/base/text/bytes_formatting.h"
-
-using extensions::APIPermission;
-using extensions::Extension;
-using storage_monitor::StorageInfo;
-using storage_monitor::StorageMonitor;
-
-namespace {
-
-// Comparator for sorting GalleryPermissionsVector -- sorts
-// allowed galleries low, and then sorts by absolute path.
-bool GalleriesVectorComparator(
-    const MediaGalleriesDialogController::GalleryPermission& a,
-    const MediaGalleriesDialogController::GalleryPermission& b) {
-  if (a.allowed && !b.allowed)
-    return true;
-  if (!a.allowed && b.allowed)
-    return false;
-
-  return a.pref_info.AbsolutePath() < b.pref_info.AbsolutePath();
-}
-
-}  // namespace
-
-MediaGalleriesDialogController::MediaGalleriesDialogController(
-    content::WebContents* web_contents,
-    const Extension& extension,
-    const base::Closure& on_finish)
-      : web_contents_(web_contents),
-        extension_(&extension),
-        on_finish_(on_finish),
-        preferences_(
-            g_browser_process->media_file_system_registry()->GetPreferences(
-                GetProfile())),
-        create_dialog_callback_(base::Bind(&MediaGalleriesDialog::Create)) {
-  // Passing unretained pointer is safe, since the dialog controller
-  // is self-deleting, and so won't be deleted until it can be shown
-  // and then closed.
-  preferences_->EnsureInitialized(
-      base::Bind(&MediaGalleriesDialogController::OnPreferencesInitialized,
-                 base::Unretained(this)));
-
-  // Unretained is safe because |this| owns |context_menu_|.
-  context_menu_.reset(
-      new MediaGalleryContextMenu(
-          base::Bind(&MediaGalleriesDialogController::DidForgetGallery,
-                     base::Unretained(this))));
-}
-
-void MediaGalleriesDialogController::OnPreferencesInitialized() {
-  if (StorageMonitor::GetInstance())
-    StorageMonitor::GetInstance()->AddObserver(this);
-
-  // |preferences_| may be NULL in tests.
-  if (preferences_) {
-    preferences_->AddGalleryChangeObserver(this);
-    InitializePermissions();
-  }
-
-  dialog_.reset(create_dialog_callback_.Run(this));
-}
-
-MediaGalleriesDialogController::MediaGalleriesDialogController(
-    const extensions::Extension& extension,
-    MediaGalleriesPreferences* preferences,
-    const CreateDialogCallback& create_dialog_callback,
-    const base::Closure& on_finish)
-    : web_contents_(NULL),
-      extension_(&extension),
-      on_finish_(on_finish),
-      preferences_(preferences),
-      create_dialog_callback_(create_dialog_callback) {
-  OnPreferencesInitialized();
-}
-
-MediaGalleriesDialogController::~MediaGalleriesDialogController() {
-  if (StorageMonitor::GetInstance())
-    StorageMonitor::GetInstance()->RemoveObserver(this);
-
-  // |preferences_| may be NULL in tests.
-  if (preferences_)
-    preferences_->RemoveGalleryChangeObserver(this);
-
-  if (select_folder_dialog_.get())
-    select_folder_dialog_->ListenerDestroyed();
-}
-
-base::string16 MediaGalleriesDialogController::GetHeader() const {
-  return l10n_util::GetStringFUTF16(IDS_MEDIA_GALLERIES_DIALOG_HEADER,
-                                    base::UTF8ToUTF16(extension_->name()));
-}
-
-base::string16 MediaGalleriesDialogController::GetSubtext() const {
-  extensions::MediaGalleriesPermission::CheckParam copy_to_param(
-      extensions::MediaGalleriesPermission::kCopyToPermission);
-  extensions::MediaGalleriesPermission::CheckParam delete_param(
-      extensions::MediaGalleriesPermission::kDeletePermission);
-  bool has_copy_to_permission =
-      extensions::PermissionsData::CheckAPIPermissionWithParam(
-          extension_, APIPermission::kMediaGalleries, &copy_to_param);
-  bool has_delete_permission =
-      extensions::PermissionsData::CheckAPIPermissionWithParam(
-          extension_, APIPermission::kMediaGalleries, &delete_param);
-
-  int id;
-  if (has_copy_to_permission)
-    id = IDS_MEDIA_GALLERIES_DIALOG_SUBTEXT_READ_WRITE;
-  else if (has_delete_permission)
-    id = IDS_MEDIA_GALLERIES_DIALOG_SUBTEXT_READ_DELETE;
-  else
-    id = IDS_MEDIA_GALLERIES_DIALOG_SUBTEXT_READ_ONLY;
-
-  return l10n_util::GetStringFUTF16(id, base::UTF8ToUTF16(extension_->name()));
-}
-
-base::string16 MediaGalleriesDialogController::GetUnattachedLocationsHeader()
-    const {
-  return l10n_util::GetStringUTF16(IDS_MEDIA_GALLERIES_UNATTACHED_LOCATIONS);
-}
-
-bool MediaGalleriesDialogController::IsAcceptAllowed() const {
-  if (!toggled_galleries_.empty() || !forgotten_galleries_.empty())
-    return true;
-
-  for (GalleryPermissionsMap::const_iterator iter = new_galleries_.begin();
-       iter != new_galleries_.end();
-       ++iter) {
-    if (iter->second.allowed)
-      return true;
-  }
-
-  return false;
-}
-
-// Note: sorts by display criterion: GalleriesVectorComparator.
-MediaGalleriesDialogController::GalleryPermissionsVector
-MediaGalleriesDialogController::FillPermissions(bool attached) const {
-  GalleryPermissionsVector result;
-  for (GalleryPermissionsMap::const_iterator iter = known_galleries_.begin();
-       iter != known_galleries_.end(); ++iter) {
-    if (!ContainsKey(forgotten_galleries_, iter->first) &&
-        attached == iter->second.pref_info.IsGalleryAvailable()) {
-      result.push_back(iter->second);
-    }
-  }
-  for (GalleryPermissionsMap::const_iterator iter = new_galleries_.begin();
-       iter != new_galleries_.end(); ++iter) {
-    if (attached == iter->second.pref_info.IsGalleryAvailable()) {
-      result.push_back(iter->second);
-    }
-  }
-
-  std::sort(result.begin(), result.end(), GalleriesVectorComparator);
-  return result;
-}
-
-MediaGalleriesDialogController::GalleryPermissionsVector
-MediaGalleriesDialogController::AttachedPermissions() const {
-  return FillPermissions(true);
-}
-
-MediaGalleriesDialogController::GalleryPermissionsVector
-MediaGalleriesDialogController::UnattachedPermissions() const {
-  return FillPermissions(false);
-}
-
-void MediaGalleriesDialogController::OnAddFolderClicked() {
-  base::FilePath default_path =
-      extensions::file_system_api::GetLastChooseEntryDirectory(
-          extensions::ExtensionPrefs::Get(GetProfile()), extension_->id());
-  if (default_path.empty())
-    PathService::Get(base::DIR_USER_DESKTOP, &default_path);
-  select_folder_dialog_ =
-      ui::SelectFileDialog::Create(this, new ChromeSelectFilePolicy(NULL));
-  select_folder_dialog_->SelectFile(
-      ui::SelectFileDialog::SELECT_FOLDER,
-      l10n_util::GetStringUTF16(IDS_MEDIA_GALLERIES_DIALOG_ADD_GALLERY_TITLE),
-      default_path,
-      NULL,
-      0,
-      base::FilePath::StringType(),
-      web_contents_->GetTopLevelNativeWindow(),
-      NULL);
-}
-
-void MediaGalleriesDialogController::DidToggleGallery(
-    GalleryDialogId gallery_id, bool enabled) {
-  // Check known galleries.
-  GalleryPermissionsMap::iterator iter = known_galleries_.find(gallery_id);
-  if (iter != known_galleries_.end()) {
-    if (iter->second.allowed == enabled)
-      return;
-
-    iter->second.allowed = enabled;
-    if (ContainsKey(toggled_galleries_, gallery_id))
-      toggled_galleries_.erase(gallery_id);
-    else
-      toggled_galleries_.insert(gallery_id);
-    return;
-  }
-
-  iter = new_galleries_.find(gallery_id);
-  if (iter != new_galleries_.end())
-    iter->second.allowed = enabled;
-
-  // Don't sort -- the dialog is open, and we don't want to adjust any
-  // positions for future updates to the dialog contents until they are
-  // redrawn.
-}
-
-void MediaGalleriesDialogController::DidForgetGallery(
-    GalleryDialogId gallery_id) {
-  media_galleries::UsageCount(media_galleries::DIALOG_FORGET_GALLERY);
-  if (!new_galleries_.erase(gallery_id)) {
-    DCHECK(ContainsKey(known_galleries_, gallery_id));
-    forgotten_galleries_.insert(gallery_id);
-  }
-  dialog_->UpdateGalleries();
-}
-
-void MediaGalleriesDialogController::DialogFinished(bool accepted) {
-  // The dialog has finished, so there is no need to watch for more updates
-  // from |preferences_|.
-  // |preferences_| may be NULL in tests.
-  if (preferences_)
-    preferences_->RemoveGalleryChangeObserver(this);
-
-  if (accepted)
-    SavePermissions();
-
-  on_finish_.Run();
-
-  delete this;
-}
-
-content::WebContents* MediaGalleriesDialogController::web_contents() {
-  return web_contents_;
-}
-
-void MediaGalleriesDialogController::FileSelected(const base::FilePath& path,
-                                                  int /*index*/,
-                                                  void* /*params*/) {
-  extensions::file_system_api::SetLastChooseEntryDirectory(
-      extensions::ExtensionPrefs::Get(GetProfile()),
-      extension_->id(),
-      path);
-
-  // Try to find it in the prefs.
-  MediaGalleryPrefInfo gallery;
-  DCHECK(preferences_);
-  bool gallery_exists = preferences_->LookUpGalleryByPath(path, &gallery);
-  if (gallery_exists && !gallery.IsBlackListedType()) {
-    // The prefs are in sync with |known_galleries_|, so it should exist in
-    // |known_galleries_| as well. User selecting a known gallery effectively
-    // just sets the gallery to permitted.
-    GalleryDialogId gallery_id = GetDialogId(gallery.pref_id);
-    GalleryPermissionsMap::iterator iter = known_galleries_.find(gallery_id);
-    DCHECK(iter != known_galleries_.end());
-    iter->second.allowed = true;
-    forgotten_galleries_.erase(gallery_id);
-    dialog_->UpdateGalleries();
-    return;
-  }
-
-  // Try to find it in |new_galleries_| (user added same folder twice).
-  for (GalleryPermissionsMap::iterator iter = new_galleries_.begin();
-       iter != new_galleries_.end(); ++iter) {
-    if (iter->second.pref_info.path == gallery.path &&
-        iter->second.pref_info.device_id == gallery.device_id) {
-      iter->second.allowed = true;
-      dialog_->UpdateGalleries();
-      return;
-    }
-  }
-
-  // Lastly, if not found, add a new gallery to |new_galleries_|.
-  // Note that it will have prefId = kInvalidMediaGalleryPrefId.
-  GalleryDialogId gallery_id = GetDialogId(gallery.pref_id);
-  new_galleries_[gallery_id] = GalleryPermission(gallery_id, gallery, true);
-  dialog_->UpdateGalleries();
-}
-
-void MediaGalleriesDialogController::OnRemovableStorageAttached(
-    const StorageInfo& info) {
-  UpdateGalleriesOnDeviceEvent(info.device_id());
-}
-
-void MediaGalleriesDialogController::OnRemovableStorageDetached(
-    const StorageInfo& info) {
-  UpdateGalleriesOnDeviceEvent(info.device_id());
-}
-
-void MediaGalleriesDialogController::OnPermissionAdded(
-    MediaGalleriesPreferences* /* prefs */,
-    const std::string& extension_id,
-    MediaGalleryPrefId /* pref_id */) {
-  if (extension_id != extension_->id())
-    return;
-  UpdateGalleriesOnPreferencesEvent();
-}
-
-void MediaGalleriesDialogController::OnPermissionRemoved(
-    MediaGalleriesPreferences* /* prefs */,
-    const std::string& extension_id,
-    MediaGalleryPrefId /* pref_id */) {
-  if (extension_id != extension_->id())
-    return;
-  UpdateGalleriesOnPreferencesEvent();
-}
-
-void MediaGalleriesDialogController::OnGalleryAdded(
-    MediaGalleriesPreferences* /* prefs */,
-    MediaGalleryPrefId /* pref_id */) {
-  UpdateGalleriesOnPreferencesEvent();
-}
-
-void MediaGalleriesDialogController::OnGalleryRemoved(
-    MediaGalleriesPreferences* /* prefs */,
-    MediaGalleryPrefId /* pref_id */) {
-  UpdateGalleriesOnPreferencesEvent();
-}
-
-void MediaGalleriesDialogController::OnGalleryInfoUpdated(
-    MediaGalleriesPreferences* prefs,
-    MediaGalleryPrefId pref_id) {
-  DCHECK(preferences_);
-  const MediaGalleriesPrefInfoMap& pref_galleries =
-      preferences_->known_galleries();
-  MediaGalleriesPrefInfoMap::const_iterator pref_it =
-      pref_galleries.find(pref_id);
-  if (pref_it == pref_galleries.end())
-    return;
-  const MediaGalleryPrefInfo& gallery_info = pref_it->second;
-  UpdateGalleriesOnDeviceEvent(gallery_info.device_id);
-}
-
-void MediaGalleriesDialogController::InitializePermissions() {
-  known_galleries_.clear();
-  DCHECK(preferences_);
-  const MediaGalleriesPrefInfoMap& galleries = preferences_->known_galleries();
-  for (MediaGalleriesPrefInfoMap::const_iterator iter = galleries.begin();
-       iter != galleries.end();
-       ++iter) {
-    const MediaGalleryPrefInfo& gallery = iter->second;
-    if (gallery.IsBlackListedType())
-      continue;
-
-    GalleryDialogId gallery_id = GetDialogId(gallery.pref_id);
-    known_galleries_[gallery_id] =
-        GalleryPermission(gallery_id, gallery, false);
-  }
-
-  MediaGalleryPrefIdSet permitted =
-      preferences_->GalleriesForExtension(*extension_);
-
-  for (MediaGalleryPrefIdSet::iterator iter = permitted.begin();
-       iter != permitted.end(); ++iter) {
-    GalleryDialogId gallery_id = GetDialogId(*iter);
-    if (ContainsKey(toggled_galleries_, gallery_id))
-      continue;
-    DCHECK(ContainsKey(known_galleries_, gallery_id));
-    known_galleries_[gallery_id].allowed = true;
-  }
-}
-
-void MediaGalleriesDialogController::SavePermissions() {
-  DCHECK(preferences_);
-  media_galleries::UsageCount(media_galleries::SAVE_DIALOG);
-  for (GalleryPermissionsMap::const_iterator iter = known_galleries_.begin();
-       iter != known_galleries_.end(); ++iter) {
-    MediaGalleryPrefId pref_id = iter->second.pref_info.pref_id;
-    if (ContainsKey(forgotten_galleries_, iter->first)) {
-      preferences_->ForgetGalleryById(pref_id);
-    } else {
-      bool changed = preferences_->SetGalleryPermissionForExtension(
-          *extension_, pref_id, iter->second.allowed);
-      if (changed) {
-        if (iter->second.allowed) {
-          media_galleries::UsageCount(
-              media_galleries::DIALOG_PERMISSION_ADDED);
-        } else {
-          media_galleries::UsageCount(
-              media_galleries::DIALOG_PERMISSION_REMOVED);
-        }
-      }
-    }
-  }
-
-  for (GalleryPermissionsMap::const_iterator iter = new_galleries_.begin();
-       iter != new_galleries_.end(); ++iter) {
-    media_galleries::UsageCount(media_galleries::DIALOG_GALLERY_ADDED);
-    // If the user added a gallery then unchecked it, forget about it.
-    if (!iter->second.allowed)
-      continue;
-
-    const MediaGalleryPrefInfo& gallery = iter->second.pref_info;
-    MediaGalleryPrefId id = preferences_->AddGallery(
-        gallery.device_id, gallery.path, MediaGalleryPrefInfo::kUserAdded,
-        gallery.volume_label, gallery.vendor_name, gallery.model_name,
-        gallery.total_size_in_bytes, gallery.last_attach_time, 0, 0, 0);
-    preferences_->SetGalleryPermissionForExtension(*extension_, id, true);
-  }
-}
-
-void MediaGalleriesDialogController::UpdateGalleriesOnPreferencesEvent() {
-  // Merge in the permissions from |preferences_|. Afterwards,
-  // |known_galleries_| may contain galleries that no longer belong there,
-  // but the code below will put |known_galleries_| back in a consistent state.
-  InitializePermissions();
-
-  std::set<GalleryDialogId> new_galleries_to_remove;
-  // Look for duplicate entries in |new_galleries_| in case one was added
-  // in another dialog.
-  for (GalleryPermissionsMap::iterator it = known_galleries_.begin();
-       it != known_galleries_.end();
-       ++it) {
-    GalleryPermission& gallery = it->second;
-    for (GalleryPermissionsMap::iterator new_it = new_galleries_.begin();
-         new_it != new_galleries_.end();
-         ++new_it) {
-      if (new_it->second.pref_info.path == gallery.pref_info.path &&
-          new_it->second.pref_info.device_id == gallery.pref_info.device_id) {
-        // Found duplicate entry. Get the existing permission from it and then
-        // remove it.
-        gallery.allowed = new_it->second.allowed;
-        new_galleries_to_remove.insert(new_it->first);
-        break;
-      }
-    }
-  }
-  for (std::set<GalleryDialogId>::const_iterator it =
-           new_galleries_to_remove.begin();
-       it != new_galleries_to_remove.end();
-       ++it) {
-    new_galleries_.erase(*it);
-  }
-
-  dialog_->UpdateGalleries();
-}
-
-void MediaGalleriesDialogController::UpdateGalleriesOnDeviceEvent(
-    const std::string& device_id) {
-  dialog_->UpdateGalleries();
-}
-
-ui::MenuModel* MediaGalleriesDialogController::GetContextMenu(
-    GalleryDialogId gallery_id) {
-  context_menu_->set_pref_id(gallery_id);
-  return context_menu_.get();
-}
-
-GalleryDialogId MediaGalleriesDialogController::GetDialogId(
-    MediaGalleryPrefId pref_id) {
-  return id_map_.GetDialogId(pref_id);
-}
-
-Profile* MediaGalleriesDialogController::GetProfile() {
-  return Profile::FromBrowserContext(web_contents_->GetBrowserContext());
-}
-
-MediaGalleriesDialogController::DialogIdMap::DialogIdMap()
-    : next_dialog_id_(1) {
-}
-
-MediaGalleriesDialogController::DialogIdMap::~DialogIdMap() {
-}
-
-GalleryDialogId
-MediaGalleriesDialogController::DialogIdMap::GetDialogId(
-    MediaGalleryPrefId pref_id) {
-  std::map<GalleryDialogId, MediaGalleryPrefId>::const_iterator it =
-      mapping_.find(pref_id);
-  if (it != mapping_.end())
-    return it->second;
-
-  GalleryDialogId result = next_dialog_id_++;
-  if (pref_id != kInvalidMediaGalleryPrefId)
-    mapping_[pref_id] = result;
-  return result;
-}
-
-// MediaGalleries dialog -------------------------------------------------------
-
-MediaGalleriesDialog::~MediaGalleriesDialog() {}
+MediaGalleriesDialogController::MediaGalleriesDialogController() {}
+MediaGalleriesDialogController::~MediaGalleriesDialogController() {}