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| 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/media_galleries/media_scan_manager.h" | |
| 6 | |
| 7 #include <stddef.h> | |
| 8 | |
| 9 #include "base/files/file_enumerator.h" | |
| 10 #include "base/files/file_util.h" | |
| 11 #include "base/logging.h" | |
| 12 #include "base/metrics/histogram.h" | |
| 13 #include "base/time/time.h" | |
| 14 #include "chrome/browser/extensions/extension_service.h" | |
| 15 #include "chrome/browser/media_galleries/media_galleries_preferences.h" | |
| 16 #include "chrome/browser/media_galleries/media_galleries_preferences_factory.h" | |
| 17 #include "chrome/browser/media_galleries/media_scan_manager_observer.h" | |
| 18 #include "chrome/browser/profiles/profile.h" | |
| 19 #include "chrome/common/extensions/api/media_galleries.h" | |
| 20 #include "content/public/browser/browser_thread.h" | |
| 21 #include "extensions/browser/extension_registry.h" | |
| 22 #include "extensions/browser/extension_system.h" | |
| 23 #include "extensions/common/extension.h" | |
| 24 | |
| 25 using extensions::ExtensionRegistry; | |
| 26 | |
| 27 namespace media_galleries = extensions::api::media_galleries; | |
| 28 | |
| 29 namespace { | |
| 30 | |
| 31 typedef std::set<std::string /*extension id*/> ScanningExtensionIdSet; | |
| 32 | |
| 33 // When multiple scan results have the same parent, sometimes it makes sense | |
| 34 // to combine them into a single scan result at the parent. This constant | |
| 35 // governs when that happens; kContainerDirectoryMinimumPercent percent of the | |
| 36 // directories in the parent directory must be scan results. | |
| 37 const int kContainerDirectoryMinimumPercent = 80; | |
| 38 | |
| 39 // How long after a completed media scan can we provide the cached results. | |
| 40 const int kScanResultsExpiryTimeInHours = 24; | |
| 41 | |
| 42 struct LocationInfo { | |
| 43 LocationInfo() | |
| 44 : pref_id(kInvalidMediaGalleryPrefId), | |
| 45 type(MediaGalleryPrefInfo::kInvalidType) {} | |
| 46 LocationInfo(MediaGalleryPrefId pref_id, MediaGalleryPrefInfo::Type type, | |
| 47 base::FilePath path) | |
| 48 : pref_id(pref_id), type(type), path(path) {} | |
| 49 // Highest priority comparison by path, next by type (scan result last), | |
| 50 // then by pref id (invalid last). | |
| 51 bool operator<(const LocationInfo& rhs) const { | |
| 52 if (path.value() == rhs.path.value()) { | |
| 53 if (type == rhs.type) { | |
| 54 return pref_id > rhs.pref_id; | |
| 55 } | |
| 56 return rhs.type == MediaGalleryPrefInfo::kScanResult; | |
| 57 } | |
| 58 return path.value() < rhs.path.value(); | |
| 59 } | |
| 60 | |
| 61 MediaGalleryPrefId pref_id; | |
| 62 MediaGalleryPrefInfo::Type type; | |
| 63 base::FilePath path; | |
| 64 MediaGalleryScanResult file_counts; | |
| 65 }; | |
| 66 | |
| 67 // Finds new scan results that are shadowed (the same location, or a child) by | |
| 68 // existing locations and moves them from |found_folders| to |child_folders|. | |
| 69 // Also moves new scan results that are shadowed by other new scan results | |
| 70 // to |child_folders|. | |
| 71 void PartitionChildScanResults( | |
| 72 MediaGalleriesPreferences* preferences, | |
| 73 MediaFolderFinder::MediaFolderFinderResults* found_folders, | |
| 74 MediaFolderFinder::MediaFolderFinderResults* child_folders) { | |
| 75 // Construct a list with everything in it. | |
| 76 std::vector<LocationInfo> all_locations; | |
| 77 for (MediaFolderFinder::MediaFolderFinderResults::const_iterator it = | |
| 78 found_folders->begin(); it != found_folders->end(); ++it) { | |
| 79 all_locations.push_back(LocationInfo(kInvalidMediaGalleryPrefId, | |
| 80 MediaGalleryPrefInfo::kScanResult, | |
| 81 it->first)); | |
| 82 all_locations.back().file_counts = it->second; | |
| 83 } | |
| 84 const MediaGalleriesPrefInfoMap& known_galleries = | |
| 85 preferences->known_galleries(); | |
| 86 for (MediaGalleriesPrefInfoMap::const_iterator it = known_galleries.begin(); | |
| 87 it != known_galleries.end(); | |
| 88 ++it) { | |
| 89 all_locations.push_back(LocationInfo(it->second.pref_id, it->second.type, | |
| 90 it->second.AbsolutePath())); | |
| 91 } | |
| 92 // Sorting on path should put all paths that are prefixes of other paths | |
| 93 // next to each other, with the shortest one first. | |
| 94 std::sort(all_locations.begin(), all_locations.end()); | |
| 95 | |
| 96 size_t previous_parent_index = 0; | |
| 97 for (size_t i = 1; i < all_locations.size(); i++) { | |
| 98 const LocationInfo& current = all_locations[i]; | |
| 99 const LocationInfo& previous_parent = all_locations[previous_parent_index]; | |
| 100 bool is_child = previous_parent.path.IsParent(current.path); | |
| 101 if (current.type == MediaGalleryPrefInfo::kScanResult && | |
| 102 current.pref_id == kInvalidMediaGalleryPrefId && | |
| 103 (is_child || previous_parent.path == current.path)) { | |
| 104 // Move new scan results that are shadowed. | |
| 105 (*child_folders)[current.path] = current.file_counts; | |
| 106 found_folders->erase(current.path); | |
| 107 } else if (!is_child) { | |
| 108 previous_parent_index = i; | |
| 109 } | |
| 110 } | |
| 111 } | |
| 112 | |
| 113 MediaGalleryScanResult SumFilesUnderPath( | |
| 114 const base::FilePath& path, | |
| 115 const MediaFolderFinder::MediaFolderFinderResults& candidates) { | |
| 116 MediaGalleryScanResult results; | |
| 117 for (MediaFolderFinder::MediaFolderFinderResults::const_iterator it = | |
| 118 candidates.begin(); it != candidates.end(); ++it) { | |
| 119 if (it->first == path || path.IsParent(it->first)) { | |
| 120 results.audio_count += it->second.audio_count; | |
| 121 results.image_count += it->second.image_count; | |
| 122 results.video_count += it->second.video_count; | |
| 123 } | |
| 124 } | |
| 125 return results; | |
| 126 } | |
| 127 | |
| 128 void AddScanResultsForProfile( | |
| 129 MediaGalleriesPreferences* preferences, | |
| 130 const MediaFolderFinder::MediaFolderFinderResults& found_folders) { | |
| 131 // First, remove any existing scan results where no app has been granted | |
| 132 // permission - either it is gone, or is already in the new scan results. | |
| 133 // This burns some pref ids, but not at an appreciable rate. | |
| 134 MediaGalleryPrefIdSet to_remove; | |
| 135 const MediaGalleriesPrefInfoMap& known_galleries = | |
| 136 preferences->known_galleries(); | |
| 137 for (MediaGalleriesPrefInfoMap::const_iterator it = known_galleries.begin(); | |
| 138 it != known_galleries.end(); | |
| 139 ++it) { | |
| 140 if (it->second.type == MediaGalleryPrefInfo::kScanResult && | |
| 141 !preferences->NonAutoGalleryHasPermission(it->first)) { | |
| 142 to_remove.insert(it->first); | |
| 143 } | |
| 144 } | |
| 145 for (MediaGalleryPrefIdSet::const_iterator it = to_remove.begin(); | |
| 146 it != to_remove.end(); | |
| 147 ++it) { | |
| 148 preferences->EraseGalleryById(*it); | |
| 149 } | |
| 150 | |
| 151 MediaFolderFinder::MediaFolderFinderResults child_folders; | |
| 152 MediaFolderFinder::MediaFolderFinderResults | |
| 153 unique_found_folders(found_folders); | |
| 154 PartitionChildScanResults(preferences, &unique_found_folders, &child_folders); | |
| 155 | |
| 156 // Updating prefs while iterating them will invalidate the pointer, so | |
| 157 // calculate the changes first and then apply them. | |
| 158 std::map<MediaGalleryPrefId, MediaGalleryScanResult> to_update; | |
| 159 for (MediaGalleriesPrefInfoMap::const_iterator it = known_galleries.begin(); | |
| 160 it != known_galleries.end(); | |
| 161 ++it) { | |
| 162 const MediaGalleryPrefInfo& gallery = it->second; | |
| 163 if (!gallery.IsBlackListedType()) { | |
| 164 MediaGalleryScanResult file_counts = | |
| 165 SumFilesUnderPath(gallery.AbsolutePath(), child_folders); | |
| 166 if (gallery.audio_count != file_counts.audio_count || | |
| 167 gallery.image_count != file_counts.image_count || | |
| 168 gallery.video_count != file_counts.video_count) { | |
| 169 to_update[it->first] = file_counts; | |
| 170 } | |
| 171 } | |
| 172 } | |
| 173 | |
| 174 for (std::map<MediaGalleryPrefId, | |
| 175 MediaGalleryScanResult>::const_iterator it = to_update.begin(); | |
| 176 it != to_update.end(); | |
| 177 ++it) { | |
| 178 const MediaGalleryPrefInfo& gallery = | |
| 179 preferences->known_galleries().find(it->first)->second; | |
| 180 preferences->AddGallery(gallery.device_id, gallery.path, gallery.type, | |
| 181 gallery.volume_label, gallery.vendor_name, | |
| 182 gallery.model_name, gallery.total_size_in_bytes, | |
| 183 gallery.last_attach_time, | |
| 184 it->second.audio_count, | |
| 185 it->second.image_count, | |
| 186 it->second.video_count); | |
| 187 } | |
| 188 | |
| 189 // Add new scan results. | |
| 190 for (MediaFolderFinder::MediaFolderFinderResults::const_iterator it = | |
| 191 unique_found_folders.begin(); | |
| 192 it != unique_found_folders.end(); | |
| 193 ++it) { | |
| 194 MediaGalleryScanResult file_counts = | |
| 195 SumFilesUnderPath(it->first, child_folders); | |
| 196 // The top level scan result is not in |child_folders|. Add it in as well. | |
| 197 file_counts.audio_count += it->second.audio_count; | |
| 198 file_counts.image_count += it->second.image_count; | |
| 199 file_counts.video_count += it->second.video_count; | |
| 200 | |
| 201 MediaGalleryPrefInfo gallery; | |
| 202 bool existing = preferences->LookUpGalleryByPath(it->first, &gallery); | |
| 203 DCHECK(!existing); | |
| 204 preferences->AddGallery(gallery.device_id, gallery.path, | |
| 205 MediaGalleryPrefInfo::kScanResult, | |
| 206 gallery.volume_label, gallery.vendor_name, | |
| 207 gallery.model_name, gallery.total_size_in_bytes, | |
| 208 gallery.last_attach_time, file_counts.audio_count, | |
| 209 file_counts.image_count, file_counts.video_count); | |
| 210 } | |
| 211 UMA_HISTOGRAM_COUNTS_10000("MediaGalleries.ScanGalleriesPopulated", | |
| 212 unique_found_folders.size() + to_update.size()); | |
| 213 } | |
| 214 | |
| 215 int CountScanResultsForExtension(MediaGalleriesPreferences* preferences, | |
| 216 const extensions::Extension* extension, | |
| 217 MediaGalleryScanResult* file_counts) { | |
| 218 int gallery_count = 0; | |
| 219 | |
| 220 MediaGalleryPrefIdSet permitted_galleries = | |
| 221 preferences->GalleriesForExtension(*extension); | |
| 222 const MediaGalleriesPrefInfoMap& known_galleries = | |
| 223 preferences->known_galleries(); | |
| 224 for (MediaGalleriesPrefInfoMap::const_iterator it = known_galleries.begin(); | |
| 225 it != known_galleries.end(); | |
| 226 ++it) { | |
| 227 if (it->second.type == MediaGalleryPrefInfo::kScanResult && | |
| 228 !ContainsKey(permitted_galleries, it->first)) { | |
| 229 gallery_count++; | |
| 230 file_counts->audio_count += it->second.audio_count; | |
| 231 file_counts->image_count += it->second.image_count; | |
| 232 file_counts->video_count += it->second.video_count; | |
| 233 } | |
| 234 } | |
| 235 return gallery_count; | |
| 236 } | |
| 237 | |
| 238 int CountDirectoryEntries(const base::FilePath& path) { | |
| 239 base::FileEnumerator dir_counter( | |
| 240 path, false /*recursive*/, base::FileEnumerator::DIRECTORIES); | |
| 241 int count = 0; | |
| 242 base::FileEnumerator::FileInfo info; | |
| 243 for (base::FilePath name = dir_counter.Next(); !name.empty(); | |
| 244 name = dir_counter.Next()) { | |
| 245 if (!base::IsLink(name)) | |
| 246 ++count; | |
| 247 } | |
| 248 return count; | |
| 249 } | |
| 250 | |
| 251 struct ContainerCount { | |
| 252 int seen_count, entries_count; | |
| 253 bool is_qualified; | |
| 254 | |
| 255 ContainerCount() : seen_count(0), entries_count(-1), is_qualified(false) {} | |
| 256 }; | |
| 257 | |
| 258 typedef std::map<base::FilePath, ContainerCount> ContainerCandidates; | |
| 259 | |
| 260 } // namespace | |
| 261 | |
| 262 MediaScanManager::MediaScanManager() | |
| 263 : scoped_extension_registry_observer_(this), | |
| 264 weak_factory_(this) { | |
| 265 DCHECK_CURRENTLY_ON(content::BrowserThread::UI); | |
| 266 } | |
| 267 | |
| 268 MediaScanManager::~MediaScanManager() { | |
| 269 DCHECK_CURRENTLY_ON(content::BrowserThread::UI); | |
| 270 } | |
| 271 | |
| 272 void MediaScanManager::AddObserver(Profile* profile, | |
| 273 MediaScanManagerObserver* observer) { | |
| 274 DCHECK_CURRENTLY_ON(content::BrowserThread::UI); | |
| 275 DCHECK(!ContainsKey(observers_, profile)); | |
| 276 observers_[profile].observer = observer; | |
| 277 } | |
| 278 | |
| 279 void MediaScanManager::RemoveObserver(Profile* profile) { | |
| 280 DCHECK_CURRENTLY_ON(content::BrowserThread::UI); | |
| 281 bool scan_in_progress = ScanInProgress(); | |
| 282 observers_.erase(profile); | |
| 283 DCHECK_EQ(scan_in_progress, ScanInProgress()); | |
| 284 } | |
| 285 | |
| 286 void MediaScanManager::CancelScansForProfile(Profile* profile) { | |
| 287 DCHECK_CURRENTLY_ON(content::BrowserThread::UI); | |
| 288 observers_[profile].scanning_extensions.clear(); | |
| 289 | |
| 290 if (!ScanInProgress()) | |
| 291 folder_finder_.reset(); | |
| 292 } | |
| 293 | |
| 294 void MediaScanManager::StartScan(Profile* profile, | |
| 295 const extensions::Extension* extension, | |
| 296 bool user_gesture) { | |
| 297 DCHECK(extension); | |
| 298 DCHECK_CURRENTLY_ON(content::BrowserThread::UI); | |
| 299 | |
| 300 ScanObserverMap::iterator scans_for_profile = observers_.find(profile); | |
| 301 // We expect that an MediaScanManagerObserver has already been registered. | |
| 302 DCHECK(scans_for_profile != observers_.end()); | |
| 303 bool scan_in_progress = ScanInProgress(); | |
| 304 // Ignore requests for extensions that are already scanning. | |
| 305 ScanningExtensionIdSet* scanning_extensions; | |
| 306 scanning_extensions = &scans_for_profile->second.scanning_extensions; | |
| 307 if (scan_in_progress && ContainsKey(*scanning_extensions, extension->id())) | |
| 308 return; | |
| 309 | |
| 310 // Provide cached result if there is not already a scan in progress, | |
| 311 // there is no user gesture, and the previous results are unexpired. | |
| 312 MediaGalleriesPreferences* preferences = | |
| 313 MediaGalleriesPreferencesFactory::GetForProfile(profile); | |
| 314 base::TimeDelta time_since_last_scan = | |
| 315 base::Time::Now() - preferences->GetLastScanCompletionTime(); | |
| 316 if (!scan_in_progress && !user_gesture && time_since_last_scan < | |
| 317 base::TimeDelta::FromHours(kScanResultsExpiryTimeInHours)) { | |
| 318 MediaGalleryScanResult file_counts; | |
| 319 int gallery_count = | |
| 320 CountScanResultsForExtension(preferences, extension, &file_counts); | |
| 321 scans_for_profile->second.observer->OnScanStarted(extension->id()); | |
| 322 scans_for_profile->second.observer->OnScanFinished(extension->id(), | |
| 323 gallery_count, | |
| 324 file_counts); | |
| 325 return; | |
| 326 } | |
| 327 | |
| 328 // On first scan for the |profile|, register to listen for extension unload. | |
| 329 if (scanning_extensions->empty()) | |
| 330 scoped_extension_registry_observer_.Add(ExtensionRegistry::Get(profile)); | |
| 331 | |
| 332 scanning_extensions->insert(extension->id()); | |
| 333 scans_for_profile->second.observer->OnScanStarted(extension->id()); | |
| 334 | |
| 335 if (folder_finder_) | |
| 336 return; | |
| 337 | |
| 338 MediaFolderFinder::MediaFolderFinderResultsCallback callback = | |
| 339 base::Bind(&MediaScanManager::OnScanCompleted, | |
| 340 weak_factory_.GetWeakPtr()); | |
| 341 if (testing_folder_finder_factory_.is_null()) { | |
| 342 folder_finder_.reset(new MediaFolderFinder(callback)); | |
| 343 } else { | |
| 344 folder_finder_.reset(testing_folder_finder_factory_.Run(callback)); | |
| 345 } | |
| 346 scan_start_time_ = base::Time::Now(); | |
| 347 folder_finder_->StartScan(); | |
| 348 } | |
| 349 | |
| 350 void MediaScanManager::CancelScan(Profile* profile, | |
| 351 const extensions::Extension* extension) { | |
| 352 DCHECK_CURRENTLY_ON(content::BrowserThread::UI); | |
| 353 | |
| 354 // Erases the logical scan if found, early exit otherwise. | |
| 355 ScanObserverMap::iterator scans_for_profile = observers_.find(profile); | |
| 356 if (scans_for_profile == observers_.end() || | |
| 357 !scans_for_profile->second.scanning_extensions.erase(extension->id())) { | |
| 358 return; | |
| 359 } | |
| 360 | |
| 361 scans_for_profile->second.observer->OnScanCancelled(extension->id()); | |
| 362 | |
| 363 // No more scanning extensions for |profile|, so stop listening for unloads. | |
| 364 if (scans_for_profile->second.scanning_extensions.empty()) | |
| 365 scoped_extension_registry_observer_.Remove(ExtensionRegistry::Get(profile)); | |
| 366 | |
| 367 if (!ScanInProgress()) { | |
| 368 folder_finder_.reset(); | |
| 369 DCHECK(!scan_start_time_.is_null()); | |
| 370 UMA_HISTOGRAM_LONG_TIMES("MediaGalleries.ScanCancelTime", | |
| 371 base::Time::Now() - scan_start_time_); | |
| 372 scan_start_time_ = base::Time(); | |
| 373 } | |
| 374 } | |
| 375 | |
| 376 void MediaScanManager::SetMediaFolderFinderFactory( | |
| 377 const MediaFolderFinderFactory& factory) { | |
| 378 testing_folder_finder_factory_ = factory; | |
| 379 } | |
| 380 | |
| 381 // A single directory may contain many folders with media in them, without | |
| 382 // containing any media itself. In fact, the primary purpose of that directory | |
| 383 // may be to contain media directories. This function tries to find those | |
| 384 // container directories. | |
| 385 MediaFolderFinder::MediaFolderFinderResults | |
| 386 MediaScanManager::FindContainerScanResults( | |
| 387 const MediaFolderFinder::MediaFolderFinderResults& found_folders, | |
| 388 const std::vector<base::FilePath>& sensitive_locations) { | |
| 389 DCHECK_CURRENTLY_ON(content::BrowserThread::FILE); | |
| 390 std::vector<base::FilePath> abs_sensitive_locations; | |
| 391 for (size_t i = 0; i < sensitive_locations.size(); ++i) { | |
| 392 base::FilePath path = base::MakeAbsoluteFilePath(sensitive_locations[i]); | |
| 393 if (!path.empty()) | |
| 394 abs_sensitive_locations.push_back(path); | |
| 395 } | |
| 396 // Recursively find parent directories with majority of media directories, | |
| 397 // or container directories. | |
| 398 // |candidates| keeps track of directories which might have enough | |
| 399 // such directories to have us return them. | |
| 400 typedef std::map<base::FilePath, ContainerCount> ContainerCandidates; | |
| 401 ContainerCandidates candidates; | |
| 402 for (MediaFolderFinder::MediaFolderFinderResults::const_iterator it = | |
| 403 found_folders.begin(); | |
| 404 it != found_folders.end(); | |
| 405 ++it) { | |
| 406 base::FilePath child_directory = it->first; | |
| 407 base::FilePath parent_directory = child_directory.DirName(); | |
| 408 | |
| 409 // Parent of root is root. | |
| 410 while (!parent_directory.empty() && child_directory != parent_directory) { | |
| 411 // Skip sensitive folders and their ancestors. | |
| 412 base::FilePath abs_parent_directory = | |
| 413 base::MakeAbsoluteFilePath(parent_directory); | |
| 414 if (abs_parent_directory.empty()) | |
| 415 break; | |
| 416 bool is_sensitive = false; | |
| 417 for (size_t i = 0; i < abs_sensitive_locations.size(); ++i) { | |
| 418 if (abs_parent_directory == abs_sensitive_locations[i] || | |
| 419 abs_parent_directory.IsParent(abs_sensitive_locations[i])) { | |
| 420 is_sensitive = true; | |
| 421 break; | |
| 422 } | |
| 423 } | |
| 424 if (is_sensitive) | |
| 425 break; | |
| 426 | |
| 427 // Don't bother with ones we already have. | |
| 428 if (found_folders.find(parent_directory) != found_folders.end()) | |
| 429 continue; | |
| 430 | |
| 431 ContainerCandidates::iterator parent_it = | |
| 432 candidates.find(parent_directory); | |
| 433 if (parent_it == candidates.end()) { | |
| 434 ContainerCount count; | |
| 435 count.seen_count = 1; | |
| 436 count.entries_count = CountDirectoryEntries(parent_directory); | |
| 437 parent_it = | |
| 438 candidates.insert(std::make_pair(parent_directory, count)).first; | |
| 439 } else { | |
| 440 ++candidates[parent_directory].seen_count; | |
| 441 } | |
| 442 // If previously sufficient, or not sufficient, bail. | |
| 443 if (parent_it->second.is_qualified || | |
| 444 parent_it->second.seen_count * 100 / parent_it->second.entries_count < | |
| 445 kContainerDirectoryMinimumPercent) { | |
| 446 break; | |
| 447 } | |
| 448 // Otherwise, mark qualified and check parent. | |
| 449 parent_it->second.is_qualified = true; | |
| 450 child_directory = parent_directory; | |
| 451 parent_directory = child_directory.DirName(); | |
| 452 } | |
| 453 } | |
| 454 MediaFolderFinder::MediaFolderFinderResults result; | |
| 455 // Copy and return worthy results. | |
| 456 for (ContainerCandidates::const_iterator it = candidates.begin(); | |
| 457 it != candidates.end(); | |
| 458 ++it) { | |
| 459 if (it->second.is_qualified && it->second.seen_count >= 2) | |
| 460 result[it->first] = MediaGalleryScanResult(); | |
| 461 } | |
| 462 return result; | |
| 463 } | |
| 464 | |
| 465 MediaScanManager::ScanObservers::ScanObservers() : observer(NULL) {} | |
| 466 MediaScanManager::ScanObservers::ScanObservers(const ScanObservers& other) = | |
| 467 default; | |
| 468 MediaScanManager::ScanObservers::~ScanObservers() {} | |
| 469 | |
| 470 void MediaScanManager::OnExtensionUnloaded( | |
| 471 content::BrowserContext* browser_context, | |
| 472 const extensions::Extension* extension, | |
| 473 extensions::UnloadedExtensionInfo::Reason reason) { | |
| 474 DCHECK_CURRENTLY_ON(content::BrowserThread::UI); | |
| 475 CancelScan(Profile::FromBrowserContext(browser_context), extension); | |
| 476 } | |
| 477 | |
| 478 bool MediaScanManager::ScanInProgress() const { | |
| 479 for (ScanObserverMap::const_iterator it = observers_.begin(); | |
| 480 it != observers_.end(); | |
| 481 ++it) { | |
| 482 if (!it->second.scanning_extensions.empty()) | |
| 483 return true; | |
| 484 } | |
| 485 return false; | |
| 486 } | |
| 487 | |
| 488 void MediaScanManager::OnScanCompleted( | |
| 489 bool success, | |
| 490 const MediaFolderFinder::MediaFolderFinderResults& found_folders) { | |
| 491 DCHECK_CURRENTLY_ON(content::BrowserThread::UI); | |
| 492 if (!folder_finder_ || !success) { | |
| 493 folder_finder_.reset(); | |
| 494 return; | |
| 495 } | |
| 496 | |
| 497 UMA_HISTOGRAM_COUNTS_10000("MediaGalleries.ScanDirectoriesFound", | |
| 498 found_folders.size()); | |
| 499 DCHECK(!scan_start_time_.is_null()); | |
| 500 UMA_HISTOGRAM_LONG_TIMES("MediaGalleries.ScanFinishedTime", | |
| 501 base::Time::Now() - scan_start_time_); | |
| 502 scan_start_time_ = base::Time(); | |
| 503 | |
| 504 content::BrowserThread::PostTaskAndReplyWithResult( | |
| 505 content::BrowserThread::FILE, FROM_HERE, | |
| 506 base::Bind(FindContainerScanResults, | |
| 507 found_folders, | |
| 508 folder_finder_->graylisted_folders()), | |
| 509 base::Bind(&MediaScanManager::OnFoundContainerDirectories, | |
| 510 weak_factory_.GetWeakPtr(), | |
| 511 found_folders)); | |
| 512 } | |
| 513 | |
| 514 void MediaScanManager::OnFoundContainerDirectories( | |
| 515 const MediaFolderFinder::MediaFolderFinderResults& found_folders, | |
| 516 const MediaFolderFinder::MediaFolderFinderResults& container_folders) { | |
| 517 MediaFolderFinder::MediaFolderFinderResults folders; | |
| 518 folders.insert(found_folders.begin(), found_folders.end()); | |
| 519 folders.insert(container_folders.begin(), container_folders.end()); | |
| 520 | |
| 521 for (ScanObserverMap::iterator scans_for_profile = observers_.begin(); | |
| 522 scans_for_profile != observers_.end(); | |
| 523 ++scans_for_profile) { | |
| 524 if (scans_for_profile->second.scanning_extensions.empty()) | |
| 525 continue; | |
| 526 Profile* profile = scans_for_profile->first; | |
| 527 MediaGalleriesPreferences* preferences = | |
| 528 MediaGalleriesPreferencesFactory::GetForProfile(profile); | |
| 529 ExtensionService* extension_service = | |
| 530 extensions::ExtensionSystem::Get(profile)->extension_service(); | |
| 531 if (!extension_service) | |
| 532 continue; | |
| 533 | |
| 534 AddScanResultsForProfile(preferences, folders); | |
| 535 | |
| 536 ScanningExtensionIdSet* scanning_extensions = | |
| 537 &scans_for_profile->second.scanning_extensions; | |
| 538 for (ScanningExtensionIdSet::const_iterator extension_id_it = | |
| 539 scanning_extensions->begin(); | |
| 540 extension_id_it != scanning_extensions->end(); | |
| 541 ++extension_id_it) { | |
| 542 const extensions::Extension* extension = | |
| 543 extension_service->GetExtensionById(*extension_id_it, false); | |
| 544 if (extension) { | |
| 545 MediaGalleryScanResult file_counts; | |
| 546 int gallery_count = CountScanResultsForExtension(preferences, extension, | |
| 547 &file_counts); | |
| 548 scans_for_profile->second.observer->OnScanFinished(*extension_id_it, | |
| 549 gallery_count, | |
| 550 file_counts); | |
| 551 } | |
| 552 } | |
| 553 scanning_extensions->clear(); | |
| 554 preferences->SetLastScanCompletionTime(base::Time::Now()); | |
| 555 } | |
| 556 scoped_extension_registry_observer_.RemoveAll(); | |
| 557 folder_finder_.reset(); | |
| 558 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1695563002:
Media Galleries Partial Deprecation: Remove scan functionality. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master